/* MT Academy UI Foundation
   One component system. No versioned selectors. No inline overrides. */

/* 1. App isolation and base */
html,body{margin:0;padding:0}
html:has(body.mta-standalone-page),body.mta-standalone-page{width:100%;min-width:100%;min-height:100%;background:var(--mta-bg);color:var(--mta-text);overflow-x:hidden}
body.mta-standalone-page,#mta-app-root,#mta-app-root *{box-sizing:border-box}
body.mta-standalone-page{font-family:var(--mta-font);font-size:15px;line-height:1.5}
#mta-app-root{min-height:100dvh;background:var(--mta-bg);color:var(--mta-text);font-family:var(--mta-font)}
#mta-app-root a{color:inherit}
#mta-app-root h1,#mta-app-root h2,#mta-app-root h3,#mta-app-root h4,#mta-app-root p{margin-top:0}
#mta-app-root h1{margin-bottom:8px;font-size:clamp(30px,3vw,42px);font-weight:500;line-height:1.08;letter-spacing:-.035em}
#mta-app-root h2{margin-bottom:8px;font-size:28px;font-weight:500;line-height:1.15;letter-spacing:-.025em}
#mta-app-root h3{margin-bottom:8px;font-size:17px;font-weight:700;line-height:1.3}
#mta-app-root p{margin-bottom:8px;color:var(--mta-text)}
#mta-app-root small,.mta-muted{color:var(--mta-muted)}
#mta-app-root code,#mta-app-root pre,#mta-app-root .mta-code-input{font-family:var(--mta-mono)}
#mta-app-root [hidden]{display:none}

.mta-fullbleed{min-height:100dvh;width:100%;background:var(--mta-bg);color:var(--mta-text)}
.mta-dashboard-shell,.mta-homework-shell{position:relative;padding:32px clamp(22px,4vw,56px) 56px}
.mta-dashboard-shell>*:not(.mta-ui-modal),.mta-homework-shell>*:not(.mta-ui-modal){max-width:var(--mta-content);margin-left:auto;margin-right:auto}
.mta-center{display:grid;place-items:center;padding:32px}
.mta-kicker{color:var(--mta-green);font-size:14px;font-weight:800;letter-spacing:.12em;line-height:1.2;margin-bottom:12px}

/* 2. Theme switch */
.mta-theme-toggle{position:relative;width:36px;height:36px;flex:0 0 36px;border:1px solid var(--mta-border);border-radius:999px;background:var(--mta-surface);color:var(--mta-text);cursor:pointer;overflow:hidden;padding:0;transition:background .15s ease,border-color .15s ease,color .15s ease,transform .15s ease}
.mta-theme-orbit{position:absolute;inset:0;display:grid;place-items:center;transition:transform .28s ease}
.mta-theme-sun,.mta-theme-moon{position:absolute;display:grid;place-items:center;font-size:16px;transition:opacity .2s ease,transform .28s ease}
.mta-theme-moon{opacity:0;transform:rotate(-60deg) scale(.5)}
.mta-theme-toggle.is-light .mta-theme-sun{opacity:0;transform:rotate(60deg) scale(.5)}
.mta-theme-toggle.is-light .mta-theme-moon{opacity:1;transform:rotate(0) scale(1)}
.mta-language-toggle{display:inline-flex;align-items:center;height:36px;padding:0 5px;border:1px solid var(--mta-border);border-radius:999px;background:var(--mta-surface);color:var(--mta-muted);font-size:10px;font-weight:800;line-height:1}.mta-language-toggle span{opacity:.45}.mta-language-toggle button{height:28px;min-width:31px;padding:0 7px;border:0;border-radius:999px;background:transparent;color:var(--mta-muted);font:inherit;cursor:pointer;transition:background .15s ease,color .15s ease,transform .15s ease}.mta-language-toggle button:hover{color:var(--mta-green);transform:translateY(-1px)}.mta-language-toggle button.active{background:var(--mta-green-soft);color:var(--mta-green)}.mta-language-toggle button.is-loading{cursor:wait}.mta-translation-notice{position:fixed;right:18px;bottom:18px;z-index:120000;max-width:min(420px,calc(100vw - 36px));padding:11px 14px;border:1px solid var(--mta-border-strong);border-radius:9px;background:var(--mta-surface);color:var(--mta-text);box-shadow:0 14px 38px rgba(0,0,0,.3);font-size:12px}.mta-translation-notice.error{border-color:color-mix(in srgb,var(--mta-red) 55%,var(--mta-border));color:var(--mta-red)}

/* 3. Unified controls */
.mta-btn,#mta-app-root .mta-course-tabs a,#mta-app-root .mta-homework-submission-details>summary,#mta-app-root .mta-login-card input[type=submit]{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:var(--mta-control);min-height:var(--mta-control);padding:0 15px;margin:0;border:1px solid transparent;border-radius:var(--mta-radius-sm);font-family:var(--mta-font);font-size:12px;font-weight:700;line-height:1;text-align:center;text-decoration:none;white-space:nowrap;cursor:pointer;appearance:none;transition:background .15s ease,border-color .15s ease,color .15s ease,transform .15s ease}
.mta-btn:hover,#mta-app-root .mta-course-tabs a:hover,#mta-app-root .mta-login-card input[type=submit]:hover{transform:translateY(-1px)}
.mta-btn-primary,#mta-app-root .mta-login-card input[type=submit]{background:var(--mta-green-strong);border-color:var(--mta-green-strong);color:var(--mta-on-green)}
.mta-btn-primary:hover,#mta-app-root .mta-login-card input[type=submit]:hover{background:color-mix(in srgb,var(--mta-green-strong) 86%,#000);border-color:color-mix(in srgb,var(--mta-green-strong) 86%,#000);box-shadow:0 7px 18px color-mix(in srgb,var(--mta-green) 18%,transparent)}
.mta-btn-ghost{background:transparent;border-color:var(--mta-green-strong);color:var(--mta-green)}
.mta-btn-ghost:hover{background:var(--mta-green-soft);border-color:var(--mta-green);color:var(--mta-green)}
.mta-btn-subtle{background:var(--mta-green-soft);border-color:var(--mta-border-strong);color:var(--mta-green)}
.mta-btn-subtle:hover{background:color-mix(in srgb,var(--mta-green-soft) 78%,var(--mta-green));border-color:var(--mta-green);color:var(--mta-green)}
.mta-btn-danger{background:transparent;border-color:color-mix(in srgb,var(--mta-red) 65%,transparent);color:var(--mta-red)}
.mta-btn-danger:hover{background:color-mix(in srgb,var(--mta-red) 10%,var(--mta-surface));border-color:var(--mta-red);color:var(--mta-red)}
.mta-btn-danger-subtle{background:color-mix(in srgb,var(--mta-red) 7%,var(--mta-surface));border-color:color-mix(in srgb,var(--mta-red) 45%,var(--mta-border));color:var(--mta-red)}
.mta-btn-danger-subtle:hover{background:color-mix(in srgb,var(--mta-red) 15%,var(--mta-surface));border-color:color-mix(in srgb,var(--mta-red) 72%,var(--mta-border));color:var(--mta-red)}
.mta-btn-text{height:auto;min-height:0;padding:0;border:0;background:transparent;color:var(--mta-green);font-weight:600}
.mta-btn-text:hover{color:var(--mta-green-strong);text-decoration:underline;text-underline-offset:3px}
.mta-btn-sm{height:var(--mta-control-sm);min-height:var(--mta-control-sm);font-size:11px;padding:0 12px}
.mta-button-label{display:inline-flex;align-items:center;justify-content:center;line-height:1}
.mta-logout{min-width:88px}
.mta-homework-admin-action{width:82px;height:32px;min-height:32px;padding:0 11px;font-size:11px}
.mta-homework-admin-action svg{display:block;width:13px;height:13px;fill:currentColor}
.mta-homework-delete-form{display:inline-flex;width:82px;height:32px;margin:0;padding:0}
.mta-homework-delete-form .mta-homework-admin-action{width:100%}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--mta-green);outline-offset:2px}

/* 4. Status / badge / chip system */
.mta-badge,.mta-homework-status,.mta-homework-detail-status,.mta-submission-status{display:inline-flex;align-items:center;justify-content:center;width:max-content;height:24px;min-height:24px;padding:0 9px;border:1px solid var(--mta-border-strong);border-radius:999px;background:transparent;color:var(--mta-muted);font-size:9px;font-weight:800;line-height:1;letter-spacing:.035em;white-space:nowrap}
.mta-badge.green,.mta-homework-status.green,.mta-homework-detail-status.green,.mta-submission-status.green{color:var(--mta-green);border-color:color-mix(in srgb,var(--mta-green) 35%,var(--mta-border));background:color-mix(in srgb,var(--mta-green) 5%,transparent)}
.mta-badge.amber,.mta-homework-status.amber,.mta-homework-detail-status.amber,.mta-submission-status.amber{color:var(--mta-amber);border-color:color-mix(in srgb,var(--mta-amber) 40%,var(--mta-border));background:color-mix(in srgb,var(--mta-amber) 5%,transparent)}
.mta-homework-status.muted{color:var(--mta-muted);border-color:var(--mta-border)}
.mta-status-text{display:inline-flex;align-items:center;gap:6px;color:var(--mta-muted);font-size:11px;font-weight:600;line-height:1}
.mta-status-text.is-published{color:var(--mta-green)}
.mta-status-text.is-draft{color:var(--mta-amber)}
.mta-status-dot{display:block;width:7px;height:7px;flex:0 0 7px;border-radius:50%;background:currentColor}
.mta-chip-row{display:flex;align-items:center;flex-wrap:wrap;gap:7px}
.mta-chip{display:inline-flex;align-items:center;height:28px;padding:0 10px;border:1px solid var(--mta-border);border-radius:999px;color:var(--mta-green);font-size:11px}.mta-chip.muted{color:var(--mta-muted)}

/* 5. Headers / navigation */
.mta-dashboard-header,.mta-course-topbar{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:24px;margin-bottom:30px}
.mta-dashboard-shell>.mta-dashboard-header{position:static;padding-right:230px}
.mta-dashboard-shell>.mta-dashboard-header>.mta-header-actions,.mta-dashboard-shell>.mta-dashboard-header>.mta-actions{position:absolute;top:32px;right:clamp(22px,4vw,56px)}
.mta-student-dashboard>.mta-dashboard-header,.mta-homework-student>.mta-dashboard-header{max-width:var(--mta-reading)}
.mta-dashboard-heading p,.mta-dashboard-heading small{display:block;margin:0;color:var(--mta-muted)}
.mta-dashboard-heading p{font-size:15px;margin-bottom:7px}.mta-dashboard-heading small{font-size:12px}
.mta-header-actions,.mta-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:nowrap;margin:0}
.mta-course-topbar{padding:0 0 22px;border-bottom:1px solid var(--mta-border)}
.mta-course-topbar h1{font-size:28px}.mta-course-topbar>div>span{color:var(--mta-muted);font-size:12px}
.mta-back-link{display:inline-block;margin-top:18px;color:var(--mta-muted);font-size:12px;text-decoration:none}.mta-back-link:hover{color:var(--mta-green)}

/* 6. Login */
.mta-login-shell{display:grid;place-items:center;padding:28px;background:#000;color:#fff}
.mta-login-card{width:min(420px,calc(100vw - 36px));padding:30px;border:1px solid #22402a;border-radius:14px;background:#070c08;box-shadow:var(--mta-shadow)}
.mta-login-card h1{font-size:32px}.mta-login-card>p{color:#9dad9f}
.mta-login-card form{display:grid;gap:14px;margin-top:22px}
.mta-login-card label{display:grid;gap:7px;font-size:12px;font-weight:700}
.mta-login-card input[type=text],.mta-login-card input[type=password]{width:100%;height:44px;border:1px solid #2a4231;border-radius:8px;background:#050906;color:#fff;padding:0 12px;font:500 14px var(--mta-font)}
.mta-login-card .login-remember{display:none}.mta-login-card .login-submit{margin:2px 0 0}.mta-login-card input[type=submit]{width:100%;height:44px}
.mta-login-error{margin:14px 0;padding:10px 12px;border:1px solid #7a3337;border-radius:8px;background:#180b0d;color:#ff9a9f;font-size:12px}
.mta-login-error.mta-login-success{border-color:#2a5835;background:#0c1c10;color:#94e7a5}
.mta-login-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.mta-login-languages{display:flex;gap:4px}.mta-login-languages a{display:grid;place-items:center;min-width:36px;min-height:32px;border:1px solid transparent;border-radius:7px;color:#9dad9f;font-size:11px;font-weight:700;text-decoration:none}.mta-login-languages a[aria-current=true]{border-color:#22402a;background:#132619;color:#55ef72}
.mta-login-field{display:grid;gap:7px}.mta-password-wrap{position:relative}.mta-login-card .mta-password-wrap input{padding-right:52px}
.mta-password-toggle{position:absolute;right:3px;top:3px;display:grid;place-items:center;width:40px;height:38px;padding:0;border:0;border-radius:6px;background:transparent;color:#9dad9f;cursor:pointer}.mta-password-toggle:hover{background:#132619;color:#55ef72}.mta-password-toggle svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.mta-eye-slash{display:none}.mta-password-toggle[aria-pressed=true] .mta-eye-slash{display:block}
.mta-login-card .mta-login-submit{width:100%;height:44px;margin-top:2px}.mta-login-card .mta-login-submit:disabled{cursor:wait;opacity:.55;transform:none;box-shadow:none}
.mta-login-status{font-size:12px;color:#9dad9f}.mta-login-status:empty{display:none}.mta-login-card>.mta-back-link{display:block;width:max-content;max-width:100%}
.mta-login-countdown[hidden],.mta-password-toggle[hidden]{display:none}

/* 7. Panels, cards, forms, tables */
.mta-panel,.mta-dashboard-card,.mta-course-card,.mta-tool-card,.mta-class-card,.mta-course-row,.mta-homework-admin-card,.mta-lesson-block,.mta-lesson-explanation,.mta-mini-test,.mta-homework-detail-card{border:1px solid var(--mta-border);border-radius:var(--mta-radius);background:var(--mta-surface)}
.mta-panel{padding:22px;min-width:0}.mta-panel>h2{font-size:24px}.mta-wide{min-width:0}
.mta-cols{display:grid;grid-template-columns:minmax(300px,370px) minmax(0,1fr);gap:18px;align-items:start}
.mta-academic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start}.mta-academic-wide{grid-column:1/-1}
.mta-form,.mta-inline{display:grid;gap:14px}.mta-inline{margin-top:14px;padding-top:14px;border-top:1px solid var(--mta-border)}.mta-form+.mta-confirm-form{display:block;margin-top:18px;padding-top:16px;border-top:1px solid var(--mta-border)}
.mta-form label,.mta-inline label,.mta-task-form label{display:grid;gap:7px;color:var(--mta-text);font-size:12px;font-weight:700}
.mta-form label small,.mta-inline label small{font-weight:400;color:var(--mta-muted)}
.mta-form input:not([type=checkbox]):not([type=radio]),.mta-form select,.mta-form textarea,.mta-inline input:not([type=checkbox]):not([type=radio]),.mta-inline select,.mta-inline textarea,.mta-task-form textarea,.mta-reopen-form input{width:100%;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2);color:var(--mta-text);font:500 13px/1.4 var(--mta-font);padding:10px 12px;outline:0}
.mta-form input:not([type=checkbox]):not([type=radio]),.mta-form select,.mta-inline input:not([type=checkbox]):not([type=radio]),.mta-inline select,.mta-reopen-form input{height:42px;padding-top:0;padding-bottom:0}
.mta-form textarea,.mta-inline textarea,.mta-task-form textarea{resize:vertical;min-height:90px}
.mta-code-input{font-family:var(--mta-mono);font-size:12px}
.mta-form-row,.mta-form-actions{display:flex;align-items:center;flex-wrap:wrap;gap:9px}
.mta-form label.mta-check,.mta-inline label.mta-check{display:flex;flex-direction:row;align-items:center;gap:9px;min-height:26px;font-weight:600;line-height:1}.mta-check input{width:16px;height:16px;flex:0 0 16px;margin:0;accent-color:var(--mta-green-strong)}.mta-check>span{display:flex;align-items:center;min-height:16px;line-height:16px}
.mta-fieldset{display:grid;gap:3px;margin:0;padding:10px 12px;border:1px solid var(--mta-border);border-radius:8px}.mta-fieldset legend{padding:0 7px;font-size:12px;font-weight:700}
.mta-panel-title{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.mta-panel-title h2{margin-bottom:2px}
.mta-separator{height:1px;border:0;background:var(--mta-border);margin:24px 0}
.mta-empty{padding:18px;border:1px dashed var(--mta-border);border-radius:8px;color:var(--mta-muted);background:var(--mta-surface)}
.mta-notice,.mta-lock-notice{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:12px auto;padding:11px 13px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface);font-size:12px}
.mta-notice.success{border-color:color-mix(in srgb,var(--mta-green) 40%,var(--mta-border));color:var(--mta-green)}.mta-notice.error,.mta-lock-notice{border-color:color-mix(in srgb,var(--mta-red) 45%,var(--mta-border));color:var(--mta-red)}
.mta-lock-notice button{display:grid;place-items:center;width:28px;height:28px;border:0;background:transparent;color:inherit;font-size:20px;cursor:pointer}
.mta-table-wrap{width:100%;overflow:auto}.mta-table{width:100%;border-collapse:collapse;min-width:720px}.mta-table th,.mta-table td{padding:12px;border-bottom:1px solid var(--mta-border);text-align:left;vertical-align:middle;font-size:12px}.mta-table th{color:var(--mta-muted);font-size:10px;text-transform:uppercase;letter-spacing:.05em}.mta-table code{color:var(--mta-green)}
details>summary{cursor:pointer;color:var(--mta-green);font-weight:700;font-size:12px;list-style:none}details>summary::-webkit-details-marker{display:none}

/* 8. Dashboard card systems */
#mta-app-root .mta-dashboard-grid{display:grid;grid-template-columns:repeat(4,220px);grid-auto-flow:row;justify-content:center;gap:12px;max-width:916px}
#mta-app-root .mta-dashboard-card,#mta-app-root .mta-course-card,#mta-app-root .mta-tool-card{display:grid;grid-template-rows:auto auto;align-content:center;justify-items:start;gap:6px;width:220px;height:84px;min-height:84px;padding:14px 16px;text-decoration:none}
#mta-app-root .mta-dashboard-card>strong,#mta-app-root .mta-dashboard-card>span,#mta-app-root .mta-course-card>strong,#mta-app-root .mta-course-card>span,#mta-app-root .mta-tool-card>strong,#mta-app-root .mta-tool-card>span{margin:0}
#mta-app-root .mta-dashboard-card strong,#mta-app-root .mta-course-card strong,#mta-app-root .mta-tool-card strong{font-size:13px;line-height:1.25}
#mta-app-root .mta-dashboard-card span,#mta-app-root .mta-course-card span,#mta-app-root .mta-tool-card span{color:var(--mta-green);font-size:10px;line-height:1.25}
.mta-card-link,.mta-course-card,.mta-tool-card{transition:transform .15s ease,border-color .15s ease}.mta-card-link:hover,.mta-course-card:hover,.mta-tool-card:hover{transform:translateY(-2px);border-color:var(--mta-border-strong)}
#mta-app-root .mta-student-dashboard>.mta-dashboard-header,#mta-app-root .mta-student-body{max-width:684px;margin-left:auto;margin-right:auto}.mta-student-summary{display:flex;gap:8px;margin-bottom:22px}
.mta-section-title{margin:26px 0 12px}.mta-section-title h2{margin-bottom:4px}.mta-section-title p{margin:0;color:var(--mta-muted);font-size:13px}
#mta-app-root .mta-course-card-grid,#mta-app-root .mta-tool-grid,#mta-app-root .mta-student-course-grid,#mta-app-root .mta-student-tools-grid{display:flex;align-items:stretch;justify-content:flex-start;flex-wrap:wrap;gap:12px;width:100%}
#mta-app-root .mta-course-card-grid>.mta-course-card,#mta-app-root .mta-tool-grid>.mta-tool-card,#mta-app-root .mta-student-course-grid>.mta-dashboard-card,#mta-app-root .mta-student-tools-grid>.mta-dashboard-card{flex:0 0 220px;width:220px}
.mta-course-card-static,.mta-tool-card-static{cursor:default}.mta-course-card-static:hover,.mta-tool-card-static:hover{transform:none}

/* 9. Academic management */
.mta-current-year{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2);margin-bottom:12px}.mta-current-year span{color:var(--mta-muted);font-size:11px}.mta-current-year strong{font-size:16px}
.mta-year-list{display:grid;gap:7px}.mta-year-row{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:40px;padding:0 10px;border-bottom:1px solid var(--mta-border)}
.mta-create-more{margin-top:16px;padding-top:14px;border-top:1px solid var(--mta-border)}.mta-create-more .mta-form{margin-top:14px}
.mta-class-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.mta-class-card{padding:16px}.mta-class-card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.mta-class-card-top strong{display:block;font-size:18px}.mta-class-card-top>div>span{color:var(--mta-muted);font-size:11px}.mta-class-card p{margin-bottom:7px;color:var(--mta-muted);font-size:12px}.mta-class-card-actions{display:flex;align-items:center;justify-content:space-between;gap:12px}.mta-class-card-actions .mta-chip-row{min-width:0}.mta-class-card-actions .mta-manage-class{flex:0 0 auto}.mta-class-card .mta-badge>span,.mta-course-row .mta-badge>span{display:inline-flex;align-items:center;justify-content:center;line-height:1}
.mta-course-list{display:grid;gap:12px}.mta-course-row{padding:17px}.mta-course-main{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center}.mta-course-main h3{font-size:17px;margin:3px 0}.mta-course-main p{color:var(--mta-muted);font-size:12px;margin:0}.mta-course-code{color:var(--mta-green);font-size:10px;font-weight:800;letter-spacing:.06em}.mta-course-row-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px}.mta-course-row-footer .mta-chip-row{min-width:0}.mta-course-row-footer .mta-manage-course{flex:0 0 auto}

/* 10. Tabs */
.mta-course-tabs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:0 0 16px}.mta-course-tabs a{height:40px;min-height:40px;background:var(--mta-surface);border-color:var(--mta-border);color:var(--mta-text);font-weight:500}.mta-course-tabs a.active{border-color:var(--mta-green-strong);color:var(--mta-green);background:var(--mta-green-soft)}

/* 11. Teacher lessons */
.mta-lessons-teacher-grid{display:grid;grid-template-columns:minmax(320px,390px) minmax(0,1fr);gap:18px;align-items:start}.mta-teacher-lesson-list{display:grid;gap:9px}.mta-teacher-lesson-row{padding:14px;border:1px solid var(--mta-border);border-radius:9px;background:var(--mta-surface-2)}.mta-teacher-lesson-summary{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px}.mta-teacher-lesson-summary strong{display:block;font-size:14px}.mta-teacher-lesson-summary small{display:block;color:var(--mta-muted);font-size:10px;margin-top:4px}.mta-teacher-lesson-row details{margin-top:10px}.mta-override-box{margin-top:14px;padding:14px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface)}.mta-override-box p{color:var(--mta-muted);font-size:11px}
.mta-mini-test-editor{display:grid;gap:12px}.mta-quiz-editor-question{display:grid;gap:10px;padding:12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}

/* 12. Student course / lesson */
.mta-course-shell{padding:28px clamp(18px,3vw,36px) 48px}.mta-course-shell>.mta-course-topbar,.mta-course-shell>.mta-lock-notice,.mta-course-shell>.mta-course-layout{max-width:1480px;margin-left:auto;margin-right:auto}
.mta-course-layout{position:relative;display:block;min-height:0;padding-left:var(--mta-sidebar);border:1px solid var(--mta-border);border-radius:var(--mta-radius-lg);overflow:hidden;background:var(--mta-surface)}
.mta-lesson-sidebar{position:absolute;inset:0 auto 0 0;width:var(--mta-sidebar);overflow:auto;border-right:1px solid var(--mta-border);background:var(--mta-surface-2)}.mta-sidebar-title{position:sticky;top:0;z-index:2;padding:11px 12px;background:var(--mta-surface-2);color:var(--mta-green);font-size:10px;font-weight:800;letter-spacing:.08em}
.mta-sidebar-lesson{display:flex;align-items:center;gap:8px;width:100%;height:42px;min-height:42px;padding:0 10px;border:0;border-left:2px solid transparent;border-bottom:1px solid color-mix(in srgb,var(--mta-border) 70%,transparent);background:transparent;color:var(--mta-text);font-family:var(--mta-font);text-align:left;text-decoration:none;cursor:pointer;overflow:hidden}.mta-sidebar-lesson:hover{background:var(--mta-surface-3)}.mta-sidebar-lesson.active{border-left-color:var(--mta-green);background:var(--mta-green-soft)}.mta-sidebar-lesson.locked{color:var(--mta-muted);cursor:pointer}.mta-sidebar-lesson strong{min-width:0;font-size:10px;font-weight:700;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mta-sidebar-lesson em{color:var(--mta-muted);font-size:9px;font-style:normal;font-weight:500}.mta-lesson-number{display:grid;place-items:center;width:22px;height:22px;flex:0 0 22px;border:1px solid var(--mta-border);border-radius:6px;color:var(--mta-green);font-size:9px}
.mta-lesson-main{min-width:0;padding:28px clamp(22px,3vw,48px);background:var(--mta-bg)}.mta-lesson-article{max-width:980px;margin:0 auto}.mta-lesson-head{margin-bottom:20px}.mta-lesson-head h2{font-size:34px}.mta-lesson-badges{display:flex;gap:7px;margin-bottom:12px}.mta-lesson-description{color:var(--mta-muted);font-size:14px}
.mta-lesson-explanation{padding:18px 20px;margin-bottom:14px}.mta-lesson-explanation p:last-child{margin-bottom:0}.mta-lesson-block{padding:17px 18px;margin-bottom:14px}.mta-lesson-block h3{margin-bottom:10px}.mta-lesson-block ul{margin:0;padding-left:20px}.mta-lesson-block li+li{margin-top:5px}.mta-lesson-block pre,.mta-answer-modal-section pre{max-width:100%;margin:0;padding:14px;border:1px solid var(--mta-border);border-radius:8px;background:#020503;color:#74f48d;overflow:auto;font-size:12px;line-height:1.55}.mta-example-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.mta-lesson-block.mistake{border-color:color-mix(in srgb,var(--mta-amber) 45%,var(--mta-border));background:color-mix(in srgb,var(--mta-amber) 5%,var(--mta-surface))}
.mta-practice-stack{display:grid;gap:14px}.mta-practice-label{display:block;margin-bottom:8px;color:var(--mta-green);font-size:10px;font-weight:800;letter-spacing:.08em}.mta-mini-test{padding:0;border:0;background:transparent}.mta-quiz-question-block{padding:14px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-quiz-question-block+.mta-quiz-question-block{margin-top:10px}.mta-question-number{color:var(--mta-muted);font-size:9px;font-weight:800;letter-spacing:.07em}.mta-quiz-question{margin:6px 0 10px;font-weight:700}.mta-quiz-options{display:grid;gap:7px}.mta-quiz-options label{display:flex;align-items:center;gap:10px;min-height:42px;padding:0 12px;border:1px solid var(--mta-border);border-radius:7px;background:var(--mta-surface);cursor:pointer}.mta-quiz-options input{accent-color:var(--mta-green-strong)}.mta-quiz-options .is-correct-option{border-color:var(--mta-green);background:var(--mta-green-soft)}.mta-quiz-options .is-wrong-option{border-color:var(--mta-red)}.mta-quiz-footer{display:flex;align-items:center;flex-wrap:wrap;gap:9px;margin-top:12px}.mta-quiz-result{font-size:11px}.mta-quiz-result.success{color:var(--mta-green)}.mta-quiz-result.error{color:var(--mta-red)}.mta-quiz-result.warning{color:var(--mta-amber)}
.mta-try-strip{display:flex;align-items:center;gap:14px;min-height:58px;padding:10px 12px;margin:14px 0;border:1px solid var(--mta-border-strong);border-radius:9px;background:var(--mta-green-soft)}.mta-try-title{flex:0 0 auto;color:var(--mta-green);font-size:12px;font-weight:800;white-space:nowrap}.mta-try-copy{flex:1 1 auto;min-width:0;color:var(--mta-text);font-size:11px}.mta-try-button{flex:0 0 auto;width:auto;max-width:170px;height:34px;min-height:34px;padding:0 13px;font-size:9px}
.mta-mini-task-block textarea{width:100%;margin:8px 0 12px}.mta-complete-button{min-width:160px}.mta-locked-card{max-width:520px;margin:40px auto;padding:26px;border:1px solid var(--mta-border);border-radius:12px;background:var(--mta-surface);text-align:center}.mta-lock-icon{font-size:26px;margin-bottom:8px}

/* 13. Homework teacher */
.mta-homework-teacher-grid{display:grid;grid-template-columns:minmax(320px,380px) minmax(0,1fr);gap:18px;align-items:start}.mta-homework-editor-panel{position:sticky;top:18px}.mta-homework-time-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.mta-homework-rules{display:grid;gap:8px}
.mta-homework-teacher-list{display:grid;gap:10px}.mta-homework-admin-card{padding:15px 16px}.mta-homework-admin-main{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:18px;min-height:78px}.mta-homework-admin-copy{display:flex;flex-direction:column;gap:6px;min-width:0}.mta-homework-admin-title{display:flex;align-items:center;flex-wrap:wrap;gap:9px}.mta-homework-admin-title>strong{font-size:14px}.mta-homework-admin-copy>small{color:var(--mta-muted);font-size:10px}.mta-homework-admin-actions{display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:8px;flex:0 0 82px}
.mta-homework-submission-details{margin-top:8px}.mta-homework-submission-details>summary{height:28px;min-height:28px;padding:0 9px;background:transparent;border-color:var(--mta-border);color:var(--mta-muted);font-size:9px}.mta-homework-submissions{margin-top:10px;padding:10px;border:1px solid var(--mta-border);border-radius:9px;background:var(--mta-surface-2)}
.mta-submission-list{display:grid;gap:8px}.mta-submission-row{display:grid;grid-template-columns:minmax(120px,1fr) auto minmax(120px,.9fr) auto;grid-template-areas:"person status time view" "reopen reopen reopen reopen";align-items:center;gap:10px 12px;min-width:0;padding:11px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface)}.mta-submission-person{grid-area:person}.mta-submission-status{grid-area:status;justify-self:start}.mta-submission-time{grid-area:time}.mta-view-submission-button{grid-area:view;justify-self:start;height:32px;min-height:32px;padding:0 10px;font-size:10px}.mta-submission-person,.mta-submission-time{display:flex;flex-direction:column;gap:3px;min-width:0}.mta-submission-person strong,.mta-submission-time strong{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mta-submission-person small,.mta-submission-time small{color:var(--mta-muted);font-size:9px}.mta-reopen-form{grid-area:reopen;justify-self:end;display:grid;grid-template-columns:minmax(170px,230px) 82px;align-items:center;gap:8px;width:min(320px,100%);min-width:0}.mta-reopen-form input{height:32px;min-width:0;padding:0 8px;font-size:10px}.mta-reopen-form .mta-btn{height:32px;min-height:32px;padding:0 9px;font-size:10px}

/* 14. Homework student */
.mta-homework-student .mta-homework-course-section{max-width:var(--mta-reading);margin:0 auto 24px}.mta-homework-list{display:grid;gap:8px}.mta-homework-item{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;column-gap:12px;width:100%;min-height:64px;padding:8px 12px;border:1px solid var(--mta-border);border-radius:9px;background:var(--mta-surface);overflow:visible}.mta-homework-item.is-locked{opacity:.74}.mta-homework-status{grid-column:1;flex:0 0 auto}.mta-homework-item-copy{grid-column:2;display:grid;align-content:center;gap:3px;min-width:0;min-height:42px}.mta-homework-item-copy strong{display:block;margin:0;font-size:13px;line-height:1.25;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mta-homework-item-copy small{display:block;margin:0;color:var(--mta-muted);font-size:10px;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mta-homework-open{grid-column:3;justify-self:end;flex:0 0 auto;width:72px;height:30px;min-height:30px;padding:0 8px;font-size:9px}
.mta-homework-detail-card{max-width:var(--mta-reading);margin:0 auto;padding:20px}.mta-homework-detail-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:14px}.mta-homework-title-line{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.mta-homework-title-line h2{margin:0;font-size:22px;font-weight:600}.mta-homework-week{display:inline-block;margin-top:8px;color:var(--mta-muted);font-size:10px;font-weight:700;letter-spacing:.05em}.mta-homework-meta{display:flex;flex-wrap:wrap;gap:10px 18px;margin-bottom:14px;padding:10px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2);font-size:11px;color:var(--mta-muted)}.mta-homework-instructions{margin-bottom:14px}.mta-homework-copy{font-size:13px}.mta-homework-code-cta{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:14px;padding:15px 16px;border:1px solid var(--mta-border);border-radius:9px;background:var(--mta-surface)}.mta-homework-code-cta>div{display:flex;flex-direction:column;gap:4px}.mta-homework-code-cta span{color:var(--mta-muted);font-size:11px}.mta-submitted-code{margin-top:12px}.mta-submitted-code pre{max-height:440px;overflow:auto}

/* 15. Coding Lab */
.mta-lab-shell{height:100dvh;min-height:620px;display:flex;flex-direction:column;background:var(--mta-bg);color:var(--mta-text);overflow:hidden}.mta-lab-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;padding:8px 14px;border-bottom:1px solid var(--mta-border);background:var(--mta-surface)}.mta-lab-brand{display:flex;flex-direction:column;gap:2px;min-width:0}.mta-lab-brand span{color:var(--mta-green);font-size:9px;font-weight:800;letter-spacing:.09em}.mta-lab-brand strong{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mta-lab-controls{display:flex;align-items:center;gap:8px;flex-wrap:nowrap}.mta-live-toggle{display:flex;align-items:center;gap:7px;font-size:11px;white-space:nowrap}.mta-live-toggle input{accent-color:var(--mta-green-strong)}.mta-web-lab{display:grid;grid-template-columns:1fr 1fr;flex:1;min-height:0}.mta-editor-pane,.mta-preview-pane{display:flex;flex-direction:column;min-width:0;min-height:0}.mta-editor-pane{border-right:1px solid var(--mta-border)}.mta-pane-title{display:flex;align-items:center;justify-content:space-between;min-height:32px;padding:0 12px;border-bottom:1px solid var(--mta-border);background:var(--mta-surface-2);color:var(--mta-muted);font-size:9px;font-weight:800;letter-spacing:.06em}.mta-editor-hint{font-weight:500;letter-spacing:0}.mta-monaco-editor,.mta-code-fallback{width:100%;height:100%;min-height:0;border:0}#mta-code-preview{width:100%;flex:1;min-height:0;border:0}.mta-code-fallback{resize:none;padding:14px;background:var(--mta-surface-2);color:var(--mta-text);font:13px/1.55 var(--mta-mono);outline:0}.mta-preview-pane iframe{background:#fff}.mta-lab-empty{width:min(560px,calc(100vw - 40px));margin:auto;padding:26px;border:1px solid var(--mta-border);border-radius:12px;background:var(--mta-surface)}.mta-lab-empty p{color:var(--mta-muted)}

/* 16. Modal */
html.mta-modal-open,html.mta-modal-open body{overflow:hidden}.mta-modal-page-lock{position:fixed;width:100%;overflow:hidden}.mta-ui-modal,.mta-ui-modal *{box-sizing:border-box}.mta-ui-modal{position:fixed;inset:0;z-index:100000;display:grid;place-items:center;padding:20px}.mta-ui-modal[hidden]{display:none}.mta-ui-modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.72);backdrop-filter:blur(3px)}.mta-ui-modal-dialog{position:relative;z-index:1;display:flex;flex-direction:column;width:min(820px,calc(100vw - 28px));max-height:82vh;border:1px solid var(--mta-border);border-radius:14px;background:var(--mta-surface);color:var(--mta-text);box-shadow:0 24px 80px rgba(0,0,0,.5);overflow:hidden}.mta-ui-modal-header,.mta-ui-modal-footer{display:flex;align-items:center;gap:10px;padding:14px 16px;border-color:var(--mta-border)}.mta-ui-modal-header{justify-content:space-between;border-bottom:1px solid var(--mta-border)}.mta-ui-modal-footer{justify-content:flex-end;border-top:1px solid var(--mta-border)}.mta-ui-modal-footer .mta-btn{min-width:86px}.mta-ui-modal-header h3{margin:0;font-size:18px}.mta-ui-modal-x{display:grid;place-items:center;width:32px;height:32px;padding:0;border:1px solid var(--mta-border);border-radius:7px;background:transparent;color:var(--mta-muted);font-size:20px;cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease,transform .15s ease}.mta-theme-toggle:hover,.mta-ui-modal-x:hover{transform:translateY(-1px);background:var(--mta-green-soft);border-color:var(--mta-border-strong);color:var(--mta-green)}.mta-ui-modal-body{min-height:0;overflow:auto;padding:16px}.mta-answer-modal-meta{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:14px}.mta-answer-modal-meta span{display:inline-flex;align-items:center;height:24px;padding:0 8px;border:1px solid var(--mta-border);border-radius:999px;color:var(--mta-muted);font-size:10px}.mta-answer-modal-section{margin-bottom:14px}.mta-answer-modal-section h4{color:var(--mta-green);font-size:11px;text-transform:uppercase;letter-spacing:.05em}.mta-answer-modal-text{padding:12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2);line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}.mta-confirm-copy{margin:0;color:var(--mta-text)}
/* Student manage modal */
.mta-student-manage-modal .mta-ui-modal-dialog{width:min(640px,calc(100vw - 28px));max-height:calc(100dvh - 32px)}
.mta-student-manage-modal .mta-ui-modal-body{padding:14px 16px;overflow:hidden}
.mta-student-manage-modal .mta-ui-modal-footer{display:none}
.mta-student-manage-form{display:grid;align-content:start;gap:8px;margin:0;padding:0}
.mta-student-manage-form label{min-width:0}
.mta-student-manage-top{display:grid;grid-template-columns:150px minmax(0,1fr);gap:14px;align-items:start;margin:0}
.mta-student-manage-identity{display:grid;gap:7px;align-self:start}
.mta-student-manage-identity label{display:grid;gap:5px;color:var(--mta-text);font-size:11px;font-weight:700}
.mta-student-manage-identity input{height:38px}
.mta-student-manage-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 14px;align-items:center}
.mta-student-manage-fields>label{display:grid;gap:5px;color:var(--mta-text);font-size:11px;font-weight:700}
.mta-student-manage-fields>label:not(.mta-check) :is(input,select){height:38px}
.mta-student-manage-fields>.mta-check{display:flex;align-items:center;height:38px;gap:9px;margin:0}
.mta-student-olympiad-control{display:flex;align-items:center;justify-content:space-between;gap:8px;height:38px;min-width:0}.mta-student-olympiad-control .mta-check{display:flex;align-items:center;gap:9px;margin:0;white-space:nowrap}.mta-olympiad-level-select{width:104px;min-width:104px;height:34px;padding:0 9px}
.mta-student-photo-card{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;align-self:start;gap:7px;padding:0;text-align:center}
.mta-student-photo-frame{display:grid;place-items:center;width:104px;height:104px;overflow:hidden;border:1px solid var(--mta-border-strong);border-radius:18px;background:var(--mta-surface-3)}
.mta-student-photo-image{width:100%;height:100%;object-fit:cover}.mta-student-photo-image[hidden],.mta-student-photo-fallback[hidden],.mta-student-photo-remove[hidden]{display:none}.mta-student-photo-fallback{display:grid;place-items:center;width:100%;height:100%;color:var(--mta-green);font-size:30px;font-weight:800;letter-spacing:.04em}
.mta-student-photo-actions{display:flex;flex-wrap:nowrap;justify-content:center;gap:5px}.mta-student-photo-actions .mta-btn{height:28px;min-height:28px;padding:0 7px;font-size:7.5px}.mta-student-photo-remove{border-color:color-mix(in srgb,var(--mta-red) 55%,var(--mta-border));color:var(--mta-red)}
.mta-student-photo-note{max-width:135px;margin:0;color:var(--mta-muted);font-size:8px;line-height:1.3}.mta-student-photo-note.is-error{color:var(--mta-red)}
.mta-student-manage-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:4px;padding-top:10px;border-top:1px solid var(--mta-border)}
.mta-student-manage-actions-right{display:flex;align-items:center;justify-content:flex-end;gap:8px}
.mta-student-manage-actions .mta-btn{height:34px;min-height:34px}
.mta-class-manage-modal .mta-ui-modal-dialog{width:min(520px,calc(100vw - 28px));max-height:calc(100dvh - 32px)}
.mta-class-manage-modal .mta-ui-modal-body{padding:16px;overflow:hidden}
.mta-class-manage-modal .mta-ui-modal-footer{display:none}
.mta-class-manage-content{display:grid;gap:16px}
.mta-class-manage-form{margin:0}
.mta-class-manage-fields{display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:12px}
.mta-class-manage-status{grid-column:1/-1}
.mta-class-manage-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--mta-border)}
.mta-class-manage-footer-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px}
.mta-class-delete-form{margin:0}
.mta-class-manage-footer .mta-btn{height:36px;min-height:36px}
.mta-course-manage-modal .mta-ui-modal-dialog{width:min(680px,calc(100vw - 28px));max-height:calc(100dvh - 32px)}
.mta-course-manage-modal .mta-ui-modal-body{padding:16px;overflow:auto}
.mta-course-manage-modal .mta-ui-modal-footer{display:none}
.mta-course-manage-content{display:grid;gap:16px}
.mta-course-manage-form{margin:0}
.mta-course-manage-fields{display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:12px}
.mta-course-manage-description,.mta-course-manage-classes{grid-column:1/-1}
.mta-course-manage-classes{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 14px}
.mta-course-manage-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--mta-border)}
.mta-course-manage-footer-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px}
.mta-course-delete-form{margin:0}
.mta-course-manage-footer .mta-btn{height:36px;min-height:36px}


/* Progress */
.mta-report-export-panel{display:grid;grid-template-columns:210px minmax(0,1fr);align-items:end;gap:18px;margin-bottom:16px;padding:16px}.mta-report-export-copy h3{margin-bottom:4px}.mta-report-export-copy .mta-kicker{margin-bottom:7px;font-size:10px}.mta-report-export-copy p{margin:0;font-size:10px}.mta-report-export-form{display:grid;grid-template-columns:minmax(140px,1.2fr) minmax(140px,1.2fr) minmax(120px,.9fr) minmax(130px,.9fr) minmax(130px,.9fr) auto;align-items:end;gap:10px;margin:0}.mta-report-export-form label{gap:5px;font-size:10px}.mta-report-export-form select,.mta-report-export-form input{height:38px}.mta-report-download{height:38px;min-height:38px;padding:0 16px}
.mta-progress-page>.mta-dashboard-header{max-width:var(--mta-content)}
.mta-progress-overview{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:18px}
.mta-progress-summary-card{display:grid;align-content:center;gap:4px;min-height:86px;padding:14px 16px;border:1px solid var(--mta-border);border-radius:var(--mta-radius);background:var(--mta-surface)}
.mta-progress-summary-card strong{font-size:18px;line-height:1.2}.mta-progress-summary-card span{color:var(--mta-muted);font-size:10px}
.mta-progress-course-tabs,.mta-progress-class-tabs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.mta-progress-course-tabs .mta-btn.active,.mta-progress-class-tabs .mta-btn.active{background:var(--mta-green-soft);border-color:var(--mta-green);color:var(--mta-green)}
.mta-olymp-level{display:inline-flex;align-items:center;justify-content:center;min-width:62px;height:26px;padding:0 9px;border:1px solid var(--mta-border-strong);border-radius:999px;font-size:10px;font-weight:800;line-height:1}.mta-olymp-level[data-level="5"]{background:#00a844;color:#fff;border-color:#00a844}.mta-olymp-level[data-level="4"]{background:#c6efce;color:#145523;border-color:#79c68b}.mta-olymp-level[data-level="3"]{background:#fff2cc;color:#6e5810;border-color:#dfc96f}.mta-olymp-level[data-level="2"]{background:#f4cccc;color:#812929;border-color:#dc8f8f}.mta-olymp-level[data-level="1"]{background:#d65b5b;color:#fff;border-color:#d65b5b}.mta-theme-dark .mta-olymp-level[data-level="4"]{background:#173c20;color:#a8efb8;border-color:#2e7540}.mta-theme-dark .mta-olymp-level[data-level="3"]{background:#3a3316;color:#ffe991;border-color:#776627}.mta-theme-dark .mta-olymp-level[data-level="2"]{background:#3c1d1d;color:#ffc0c0;border-color:#793838}
.mta-progress-course-detail{padding:18px;border:1px solid var(--mta-border);border-radius:var(--mta-radius-lg);background:var(--mta-surface)}
.mta-progress-course-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:12px}.mta-progress-course-head h2{margin-bottom:0}
.mta-progress-meter{height:7px;overflow:hidden;border-radius:999px;background:var(--mta-surface-3)}.mta-progress-meter>span{display:block;width:var(--mta-progress,0%);height:100%;border-radius:inherit;background:var(--mta-green-strong);transition:width .2s ease}
.mta-progress-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:14px 0}.mta-progress-stat{display:grid;align-content:center;gap:3px;min-height:68px;padding:11px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-progress-stat strong{font-size:13px}.mta-progress-stat span{color:var(--mta-muted);font-size:9px}
.mta-progress-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.mta-progress-columns .mta-panel{padding:16px}.mta-progress-columns .mta-panel h3{margin-bottom:12px}
.mta-progress-list{display:grid;gap:6px}.mta-progress-row{display:grid;grid-template-columns:30px minmax(0,1fr) auto;align-items:center;gap:9px;min-height:42px;padding:6px 8px;border-bottom:1px solid var(--mta-border)}.mta-progress-row:last-child{border-bottom:0}.mta-progress-row strong{min-width:0;font-size:11px}.mta-progress-index{display:grid;place-items:center;width:28px;height:28px;border:1px solid var(--mta-border);border-radius:7px;color:var(--mta-green);font-size:9px;font-weight:800}
.mta-progress-class-panel{margin-bottom:16px}.mta-progress-table{min-width:820px}.mta-progress-cell{display:grid;grid-template-columns:38px minmax(90px,1fr);align-items:center;gap:8px}.mta-progress-cell>span{font-size:11px;font-weight:700}.mta-progress-cell .mta-progress-meter{height:5px}
.mta-progress-student-detail{margin-top:16px}.mta-progress-student-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}.mta-progress-student-head h2{margin-bottom:3px}.mta-progress-avatar{display:grid;place-items:center;width:64px;height:64px;flex:0 0 64px;overflow:hidden;border:1px solid var(--mta-border-strong);border-radius:14px;background:var(--mta-surface-3);color:var(--mta-green);font-size:20px;font-weight:800}.mta-progress-avatar img{width:100%;height:100%;object-fit:cover}
.mta-progress-teacher-course-tabs{margin:0 0 12px}.mta-progress-teacher-stats{margin:0 0 10px}.mta-progress-teacher-meter{margin-bottom:12px}.mta-progress-teacher-columns .mta-panel{min-width:0}.mta-progress-row-copy{display:grid;min-width:0;gap:2px}.mta-progress-row-copy strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mta-progress-row-copy small{overflow:hidden;color:var(--mta-muted);font-size:8px;line-height:1.35;text-overflow:ellipsis;white-space:nowrap}.mta-progress-detail-row{min-height:50px}


/* 17. Exams */
.mta-prewrap{white-space:pre-wrap}
.mta-exam-time-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.mta-exam-list,.mta-exam-question-list,.mta-exam-taking-list,.mta-exam-result-list,.mta-exam-grade-list{display:grid;gap:10px}
.mta-exam-card,.mta-exam-question-card,.mta-exam-taking-question,.mta-exam-result-item,.mta-exam-grade-item{border:1px solid var(--mta-border);border-radius:var(--mta-radius);background:var(--mta-surface-2)}
.mta-exam-card{display:grid;gap:12px;padding:15px}
.mta-exam-card-head,.mta-exam-card-footer,.mta-exam-detail-head,.mta-exam-taking-head,.mta-exam-grade-question{display:flex;align-items:center;justify-content:space-between;gap:12px}
.mta-exam-card-head>div,.mta-exam-taking-head>div,.mta-exam-grade-question>div{display:grid;min-width:0;gap:3px}.mta-exam-card-head strong{font-size:14px}.mta-exam-card-head span,.mta-exam-card-footer small{color:var(--mta-muted);font-size:10px}
.mta-exam-meta,.mta-exam-detail-meta{display:flex;align-items:center;flex-wrap:wrap;gap:6px 14px;color:var(--mta-muted);font-size:10px}.mta-exam-meta span{position:relative}.mta-exam-meta span+span:before{content:"·";position:absolute;left:-9px;color:var(--mta-faint)}
.mta-exam-manage-grid{display:grid;grid-template-columns:minmax(300px,370px) minmax(0,1fr);gap:18px;align-items:start;margin-bottom:18px}
.mta-exam-overview{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:16px}
.mta-exam-question-panel,.mta-exam-attempt-panel,.mta-exam-grade-panel{margin-top:18px}
.mta-exam-question-card{padding:12px}.mta-exam-question-top{display:grid;grid-template-columns:30px minmax(0,1fr) auto auto;align-items:center;gap:10px}.mta-exam-question-top>div{display:grid;gap:3px}.mta-exam-question-top small{color:var(--mta-muted);font-size:9px}
.mta-exam-question-top .mta-confirm-form{margin:0;padding:0;border:0}
.mta-exam-code-fields,.mta-exam-mcq-fields{display:grid;gap:14px}.mta-exam-code-fields[hidden],.mta-exam-mcq-fields[hidden]{display:none}
.mta-exam-attempt-table{min-width:860px}
.mta-exam-grade-list{gap:12px}.mta-exam-grade-item{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,.8fr) 120px;gap:12px;align-items:start;padding:14px}.mta-exam-grade-question{justify-content:flex-start}.mta-exam-grade-question small{display:block;color:var(--mta-muted);font-size:9px}.mta-exam-answer-box{min-width:0;padding:10px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface)}.mta-exam-answer-box strong{display:block;margin-bottom:6px;font-size:10px;color:var(--mta-muted);text-transform:uppercase}.mta-exam-answer-box pre{max-height:240px;overflow:auto;margin:0}.mta-exam-answer-box p{margin:0}
.mta-exam-student-detail{max-width:var(--mta-reading);margin-left:auto;margin-right:auto}.mta-exam-detail-head{align-items:flex-start;margin-bottom:14px}.mta-exam-detail-head>div:first-child{display:grid;gap:8px}.mta-exam-detail-head h2{margin:0}.mta-exam-instructions{margin:0 0 16px;padding:12px 14px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-exam-instructions>:last-child{margin-bottom:0}
.mta-exam-start-card{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-exam-start-card p{margin:0;color:var(--mta-muted)}
.mta-exam-running-bar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 14px;padding:10px 12px;border:1px solid var(--mta-border-strong);border-radius:8px;background:var(--mta-surface);box-shadow:var(--mta-shadow)}.mta-exam-running-bar strong{color:var(--mta-green);font-size:11px;letter-spacing:.08em}.mta-exam-timer{font-size:18px;font-weight:800;font-variant-numeric:tabular-nums}.mta-exam-timer.is-warning{color:var(--mta-amber)}
.mta-exam-attempt-form{display:grid;gap:14px}.mta-exam-taking-question{padding:16px}.mta-exam-taking-head{justify-content:flex-start;margin-bottom:12px}.mta-exam-taking-head small{display:block;color:var(--mta-muted);font-size:9px;margin-top:3px}.mta-exam-taking-question label{display:grid;gap:7px;font-size:12px;font-weight:700}.mta-exam-taking-question textarea{width:100%;min-height:120px;padding:11px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface);color:var(--mta-text);font:500 13px/1.5 var(--mta-font);resize:vertical}.mta-exam-taking-question textarea.mta-code-input{font-family:var(--mta-mono)}
.mta-exam-options{display:grid;gap:8px}.mta-exam-options label{display:flex;align-items:center;gap:10px;min-height:42px;padding:9px 11px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface);cursor:pointer}.mta-exam-options input{width:16px;height:16px;flex:0 0 16px;accent-color:var(--mta-green-strong)}.mta-exam-submit-row{display:flex;justify-content:flex-end;padding-top:4px}
.mta-exam-result-head{display:flex;align-items:stretch;gap:10px;margin-bottom:14px}.mta-exam-result-head>div{display:grid;gap:3px;min-width:180px;padding:12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-exam-result-head strong{font-size:20px}.mta-exam-result-head span{color:var(--mta-muted);font-size:9px}.mta-exam-result-item{padding:14px}.mta-exam-result-item pre{overflow:auto}.mta-exam-teacher-note{margin-top:14px;padding:12px 14px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-exam-teacher-note p{margin:5px 0 0}
.mta-exam-save-status{display:inline-flex;align-items:center;min-height:22px;padding:3px 7px;border:1px solid var(--mta-border);border-radius:999px;color:var(--mta-muted);font-size:8px;font-weight:800;letter-spacing:.04em;white-space:nowrap}.mta-exam-save-status.is-saved{border-color:color-mix(in srgb,var(--mta-green) 40%,var(--mta-border));color:var(--mta-green)}.mta-exam-save-status.is-saving{border-color:color-mix(in srgb,var(--mta-amber) 40%,var(--mta-border));color:var(--mta-amber)}.mta-exam-save-status.is-offline{border-color:color-mix(in srgb,var(--mta-amber) 55%,var(--mta-border));color:var(--mta-amber)}.mta-exam-save-status.is-error{border-color:color-mix(in srgb,var(--mta-red) 55%,var(--mta-border));color:var(--mta-red)}.mta-exam-recovery-notice[hidden],.mta-exam-session-gate[hidden]{display:none}.mta-exam-recovery-notice{margin:-4px 0 14px;padding:10px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2);font-size:10px;font-weight:600}.mta-exam-recovery-notice.is-info{border-color:color-mix(in srgb,var(--mta-green) 35%,var(--mta-border));color:var(--mta-green)}.mta-exam-recovery-notice.is-warning{border-color:color-mix(in srgb,var(--mta-amber) 50%,var(--mta-border));color:var(--mta-amber)}.mta-exam-recovery-notice.is-danger{border-color:color-mix(in srgb,var(--mta-red) 50%,var(--mta-border));color:var(--mta-red)}.mta-exam-session-gate{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px;padding:14px;border:1px solid color-mix(in srgb,var(--mta-red) 45%,var(--mta-border));border-radius:8px;background:color-mix(in srgb,var(--mta-red) 5%,var(--mta-surface-2))}.mta-exam-session-gate>div{display:grid;gap:4px}.mta-exam-session-gate span{font-size:10px;color:var(--mta-muted)}.mta-exam-attempt-form.is-recovery-locked{opacity:.48;pointer-events:none;user-select:none}.mta-exam-attempt-form.is-time-locked .mta-exam-taking-list{opacity:.48;pointer-events:none;user-select:none}
.mta-exam-security-settings{display:grid;gap:12px;padding:13px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-exam-security-settings-head>div{display:grid;gap:3px}.mta-exam-security-settings-head strong{font-size:12px}.mta-exam-security-settings-head span,.mta-security-help{font-size:9px;color:var(--mta-muted)}.mta-security-check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.mta-security-number-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.mta-exam-running-meta{display:flex;align-items:center;gap:10px}.mta-exam-security-notice[hidden]{display:none}.mta-exam-security-notice{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:-4px 0 14px;padding:10px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2);font-size:11px;font-weight:600}.mta-exam-security-notice.is-info{border-color:color-mix(in srgb,var(--mta-green) 35%,var(--mta-border));color:var(--mta-green)}.mta-exam-security-notice.is-warning{border-color:color-mix(in srgb,var(--mta-amber) 55%,var(--mta-border));color:var(--mta-amber)}.mta-exam-security-notice.is-danger{border-color:color-mix(in srgb,var(--mta-red) 55%,var(--mta-border));color:var(--mta-red)}.mta-exam-fullscreen-gate{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px;padding:14px;border:1px solid color-mix(in srgb,var(--mta-amber) 50%,var(--mta-border));border-radius:8px;background:color-mix(in srgb,var(--mta-amber) 5%,var(--mta-surface-2))}.mta-exam-fullscreen-gate[hidden]{display:none}.mta-exam-fullscreen-gate>div{display:grid;gap:4px}.mta-exam-fullscreen-gate span{font-size:10px;color:var(--mta-muted)}.mta-exam-attempt-form.is-security-locked{opacity:.42;pointer-events:none;user-select:none}.mta-exam-security-review{display:grid;gap:12px;margin:14px 0 18px;padding:14px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-exam-security-review h3{margin:0;font-size:16px}.mta-security-summary-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.mta-security-summary-grid>div{display:grid;gap:3px;padding:10px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface)}.mta-security-summary-grid strong{font-size:17px}.mta-security-summary-grid span{font-size:9px;color:var(--mta-muted)}.mta-security-event-list{display:grid;border:1px solid var(--mta-border);border-radius:8px;overflow:hidden}.mta-security-event-row{display:grid;grid-template-columns:10px minmax(0,1fr) auto auto;align-items:center;gap:10px;padding:9px 10px;background:var(--mta-surface)}.mta-security-event-row+.mta-security-event-row{border-top:1px solid var(--mta-border)}.mta-security-event-row>div{display:grid;gap:2px}.mta-security-event-row small{font-size:9px;color:var(--mta-muted)}.mta-security-event-row.is-ignored{opacity:.48}.mta-security-event-dot{width:8px;height:8px;border-radius:50%;background:var(--mta-faint)}.mta-security-event-dot.info{background:var(--mta-green)}.mta-security-event-dot.warning{background:var(--mta-amber)}.mta-security-event-dot.violation{background:var(--mta-red)}.mta-notice.warning{border-color:color-mix(in srgb,var(--mta-amber) 50%,var(--mta-border));color:var(--mta-amber)}

/* 18. Security notice */
.mta-study-restriction-notice{position:fixed;top:16px;left:50%;z-index:99999;display:flex;align-items:center;gap:12px;transform:translateX(-50%);max-width:min(620px,calc(100vw - 28px));padding:10px 12px;border:1px solid color-mix(in srgb,var(--mta-red) 55%,var(--mta-border));border-radius:8px;background:var(--mta-surface);color:var(--mta-red);box-shadow:var(--mta-shadow);font:600 11px var(--mta-font)}.mta-study-restriction-notice button{border:0;background:transparent;color:inherit;font-size:17px;cursor:pointer}
.mta-build-debug{position:fixed;right:10px;bottom:10px;z-index:999999;padding:6px 9px;border:1px solid var(--mta-green);border-radius:6px;background:var(--mta-surface);color:var(--mta-green);font:700 10px var(--mta-font)}

/* 19. Responsive */
@media(max-width:1050px){
 .mta-progress-overview,.mta-progress-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
 .mta-class-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 #mta-app-root .mta-dashboard-grid{grid-template-columns:repeat(3,220px);max-width:684px}
 .mta-cols,.mta-lessons-teacher-grid,.mta-homework-teacher-grid{grid-template-columns:1fr}
 .mta-homework-editor-panel{position:static}
 .mta-submission-row{grid-template-columns:minmax(120px,1fr) auto minmax(110px,.8fr) auto}
}
@media(max-width:760px){
 .mta-progress-columns{grid-template-columns:1fr}.mta-progress-course-head{align-items:flex-start;flex-direction:column}
 .mta-dashboard-shell,.mta-homework-shell{padding:22px 16px 40px}
 .mta-dashboard-header,.mta-course-topbar{grid-template-columns:1fr;gap:14px}.mta-dashboard-shell>.mta-dashboard-header{padding-right:0}.mta-dashboard-shell>.mta-dashboard-header>.mta-header-actions,.mta-dashboard-shell>.mta-dashboard-header>.mta-actions{position:static;justify-content:flex-end;flex-wrap:wrap}.mta-header-actions,.mta-actions{justify-content:flex-end;flex-wrap:wrap}
 #mta-app-root .mta-dashboard-grid{grid-template-columns:repeat(2,220px);max-width:452px}.mta-class-grid{grid-template-columns:1fr}
 .mta-course-layout{display:block;padding-left:0}.mta-lesson-sidebar{position:relative;inset:auto;width:auto;max-height:320px;border-right:0;border-bottom:1px solid var(--mta-border)}.mta-lesson-main{padding:20px 16px}.mta-example-grid{grid-template-columns:1fr}
 .mta-homework-item{gap:9px;padding:0 10px}.mta-homework-open{width:68px}
 .mta-try-strip{gap:10px}.mta-try-button{width:auto}
 .mta-homework-detail-head{flex-direction:column}.mta-homework-code-cta{grid-template-columns:1fr}.mta-homework-time-grid{grid-template-columns:1fr}
 .mta-web-lab{grid-template-columns:1fr;grid-template-rows:1fr 1fr}.mta-editor-pane{border-right:0;border-bottom:1px solid var(--mta-border)}.mta-lab-toolbar{align-items:flex-start;flex-direction:column}.mta-lab-controls{width:100%;flex-wrap:wrap}
 .mta-academic-grid{grid-template-columns:1fr}.mta-academic-wide{grid-column:auto}
}
@media(max-height:700px) and (min-width:521px){
 .mta-student-manage-modal .mta-ui-modal-body{overflow:auto}
 .mta-student-manage-actions{position:sticky;bottom:0;z-index:2;background:var(--mta-surface);padding-bottom:2px}
}
@media(max-width:520px){
 .mta-progress-overview,.mta-progress-stats{grid-template-columns:1fr}.mta-progress-summary-card{min-height:72px}.mta-progress-row{grid-template-columns:30px minmax(0,1fr)}.mta-progress-row .mta-badge{grid-column:2}.mta-progress-course-tabs .mta-btn,.mta-progress-class-tabs .mta-btn{flex:1 1 calc(50% - 4px)}
 .mta-class-manage-modal{padding:8px}.mta-class-manage-modal .mta-ui-modal-dialog{width:100%;max-height:calc(100dvh - 16px)}.mta-class-manage-modal .mta-ui-modal-body{padding:12px;overflow:auto}.mta-class-manage-fields{grid-template-columns:1fr}.mta-class-manage-status{grid-column:auto}.mta-class-manage-footer{align-items:stretch;flex-direction:column}.mta-class-delete-form,.mta-class-delete-form .mta-btn{width:100%}.mta-class-manage-footer-actions{width:100%}.mta-class-manage-footer-actions .mta-btn{flex:1 1 0}.mta-course-manage-modal{padding:8px}.mta-course-manage-modal .mta-ui-modal-dialog{width:100%;max-height:calc(100dvh - 16px)}.mta-course-manage-modal .mta-ui-modal-body{padding:12px;overflow:auto}.mta-course-manage-fields,.mta-course-manage-classes{grid-template-columns:1fr}.mta-course-manage-description,.mta-course-manage-classes{grid-column:auto}.mta-course-manage-footer{align-items:stretch;flex-direction:column}.mta-course-delete-form,.mta-course-delete-form .mta-btn{width:100%}.mta-course-manage-footer-actions{width:100%}.mta-course-manage-footer-actions .mta-btn{flex:1 1 0}.mta-course-row-footer{align-items:flex-start;flex-direction:column}.mta-course-row-footer .mta-manage-course{align-self:flex-end}
 .mta-student-manage-modal{padding:8px}.mta-student-manage-modal .mta-ui-modal-dialog{width:100%;max-height:calc(100dvh - 16px)}.mta-student-manage-modal .mta-ui-modal-body{padding:12px;overflow:auto}.mta-student-manage-top{grid-template-columns:1fr;gap:10px}.mta-student-photo-card{display:grid;grid-template-columns:76px minmax(0,1fr);grid-template-areas:"photo actions" "photo note";align-items:center;padding:0;text-align:left}.mta-student-photo-frame{grid-area:photo;width:76px;height:76px;border-radius:14px}.mta-student-photo-actions{grid-area:actions;justify-content:flex-start;flex-wrap:nowrap}.mta-student-photo-note{grid-area:note;max-width:none}.mta-student-manage-identity,.mta-student-manage-fields{grid-template-columns:1fr;gap:8px}.mta-student-manage-fields>.mta-check{height:34px}.mta-student-manage-actions{position:sticky;bottom:0;z-index:2;align-items:stretch;flex-direction:column-reverse;background:var(--mta-surface);padding-bottom:4px}.mta-student-delete-form,.mta-student-delete-form .mta-btn{width:100%}.mta-student-manage-actions-right{width:100%}.mta-student-manage-actions-right .mta-btn{flex:1 1 0}
 #mta-app-root .mta-dashboard-grid{grid-template-columns:minmax(0,1fr);max-width:none}
 #mta-app-root .mta-course-card-grid,#mta-app-root .mta-tool-grid,#mta-app-root .mta-student-course-grid,#mta-app-root .mta-student-tools-grid{display:grid;grid-template-columns:minmax(0,1fr)}
 #mta-app-root .mta-course-card-grid>.mta-course-card,#mta-app-root .mta-tool-grid>.mta-tool-card,#mta-app-root .mta-student-course-grid>.mta-dashboard-card,#mta-app-root .mta-student-tools-grid>.mta-dashboard-card{width:100%;flex-basis:auto}
 .mta-homework-item{height:auto;min-height:70px;padding:9px 10px}.mta-homework-item-copy strong,.mta-homework-item-copy small{white-space:normal;overflow:visible;text-overflow:clip}
 .mta-try-strip{align-items:flex-start;flex-wrap:wrap}.mta-try-copy{flex-basis:calc(100% - 120px)}.mta-try-button{margin-left:auto}
 .mta-submission-row{grid-template-columns:1fr auto;grid-template-areas:"person status" "time time" "view view" "reopen reopen"}.mta-view-submission-button{width:max-content}.mta-reopen-form{justify-self:stretch;width:100%;grid-template-columns:minmax(0,1fr) 82px}
 .mta-course-tabs{align-items:stretch}.mta-course-tabs a{flex:1 1 calc(50% - 4px)}
}
@media (max-width:1050px){.mta-report-export-panel{grid-template-columns:1fr}.mta-report-export-form{grid-template-columns:repeat(3,minmax(0,1fr))}.mta-report-download{width:100%}}
@media (max-width:760px){.mta-report-export-form{grid-template-columns:repeat(2,minmax(0,1fr))}.mta-report-download{grid-column:1/-1}}
@media (max-width:520px){.mta-report-export-form{grid-template-columns:1fr}.mta-report-download{grid-column:auto}}
@media(max-width:1050px){.mta-exam-manage-grid{grid-template-columns:1fr}.mta-exam-grade-item{grid-template-columns:minmax(0,1fr) minmax(220px,.8fr)}}
@media(max-width:760px){.mta-exam-overview{grid-template-columns:repeat(2,minmax(0,1fr))}.mta-exam-grade-item{grid-template-columns:1fr}.mta-exam-card-footer,.mta-exam-detail-head,.mta-exam-start-card{align-items:flex-start;flex-direction:column}.mta-exam-time-grid{grid-template-columns:1fr}}
@media(max-width:520px){.mta-exam-overview{grid-template-columns:1fr}.mta-exam-question-top{grid-template-columns:30px minmax(0,1fr)}.mta-exam-question-top .mta-btn,.mta-exam-question-top .mta-confirm-form{grid-column:2}.mta-exam-card-footer .mta-btn{width:100%}.mta-exam-result-head{flex-direction:column}.mta-exam-result-head>div{min-width:0}.mta-exam-running-bar{top:6px}}
.mta-mcq-builder{display:grid;gap:10px;padding:12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}
.mta-mcq-builder-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.mta-mcq-builder-head strong{font-size:12px}.mta-mcq-builder-head small{font-size:9px;color:var(--mta-muted)}
.mta-mcq-options-editor,.mta-import-option-list{display:grid;gap:8px}.mta-mcq-option-row,.mta-import-option-row{display:grid;grid-template-columns:30px 26px minmax(0,1fr) 30px;align-items:center;gap:8px}.mta-import-option-row{grid-template-columns:30px 26px minmax(0,1fr)}
.mta-mcq-correct-control{display:grid;place-items:center;width:30px;height:30px;margin:0;cursor:pointer}.mta-mcq-correct-control input{position:absolute;opacity:0;pointer-events:none}.mta-mcq-correct-control span{display:grid;place-items:center;width:26px;height:26px;border:1px solid var(--mta-border-strong);border-radius:7px;background:var(--mta-surface);color:transparent;font-size:13px;font-weight:900;transition:background .15s ease,border-color .15s ease,color .15s ease,transform .15s ease}.mta-mcq-correct-control:hover span{border-color:var(--mta-green);transform:translateY(-1px)}.mta-mcq-correct-control input:checked+span{background:var(--mta-green-strong);border-color:var(--mta-green-strong);color:var(--mta-on-green)}.mta-mcq-correct-control input:focus-visible+span{outline:2px solid var(--mta-green);outline-offset:2px}.mta-import-correct-button{display:grid;place-items:center;width:30px;height:30px;margin:0;padding:0;border:0;background:transparent;cursor:pointer}.mta-import-correct-button span{display:grid;place-items:center;width:26px;height:26px;border:1px solid var(--mta-border-strong);border-radius:7px;background:var(--mta-surface);color:transparent;font-size:13px;font-weight:900;transition:background .15s ease,border-color .15s ease,color .15s ease,transform .15s ease}.mta-import-correct-button:hover span{border-color:var(--mta-green);transform:translateY(-1px)}.mta-import-correct-button.is-selected span{background:var(--mta-green-strong);border-color:var(--mta-green-strong);color:var(--mta-on-green)}.mta-import-correct-button:focus-visible span{outline:2px solid var(--mta-green);outline-offset:2px}
.mta-mcq-letter{display:grid;place-items:center;width:26px;height:26px;border:1px solid var(--mta-border);border-radius:7px;color:var(--mta-green);font-size:10px;font-weight:800}.mta-mcq-option-row>input[type=text],.mta-import-option-row>input[type=text]{height:38px}.mta-mcq-remove-option{display:grid;place-items:center;width:30px;height:30px;padding:0;border:1px solid var(--mta-border);border-radius:7px;background:transparent;color:var(--mta-muted);font:700 18px/1 var(--mta-font);cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}.mta-mcq-remove-option:hover{border-color:var(--mta-red);background:color-mix(in srgb,var(--mta-red) 8%,var(--mta-surface));color:var(--mta-red)}.mta-mcq-remove-option:disabled{opacity:.28;cursor:not-allowed}
.mta-exam-question-modal .mta-ui-modal-dialog,.mta-exam-import-modal .mta-ui-modal-dialog{width:min(760px,calc(100vw - 28px));max-height:calc(100dvh - 32px)}.mta-exam-import-preview-modal{place-items:stretch center;padding:16px 20px}.mta-exam-import-preview-modal .mta-ui-modal-backdrop{backdrop-filter:none}.mta-exam-import-preview-modal .mta-ui-modal-dialog{width:min(960px,calc(100vw - 28px));height:calc(100dvh - 32px);max-height:none;align-self:center}.mta-exam-question-modal .mta-ui-modal-body,.mta-exam-import-modal .mta-ui-modal-body{padding:16px;overflow:auto}.mta-exam-import-preview-modal .mta-ui-modal-body{display:flex;min-height:0;padding:16px;overflow:hidden}.mta-exam-import-preview-modal .mta-exam-import-preview-form{display:flex;flex:1 1 auto;min-width:0;min-height:0;flex-direction:column;gap:12px}.mta-exam-import-preview-modal .mta-import-preview-summary{flex:0 0 auto}.mta-exam-import-preview-modal .mta-import-preview-list{flex:1 1 auto;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;overflow-anchor:none;scrollbar-gutter:stable;padding-right:6px}.mta-exam-import-preview-modal .mta-exam-modal-actions{flex:0 0 auto;margin-top:0;background:var(--mta-surface)}.mta-exam-question-modal .mta-ui-modal-footer,.mta-exam-import-modal .mta-ui-modal-footer,.mta-exam-import-preview-modal .mta-ui-modal-footer{display:none}.mta-exam-modal-actions{display:flex;align-items:center;justify-content:flex-end;gap:9px;padding-top:14px;border-top:1px solid var(--mta-border)}
.mta-import-divider{display:flex;align-items:center;gap:10px;color:var(--mta-muted);font-size:9px;font-weight:800}.mta-import-divider:before,.mta-import-divider:after{content:"";height:1px;flex:1;background:var(--mta-border)}.mta-import-help{display:grid;gap:4px;padding:11px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-import-help strong{font-size:11px}.mta-import-help span{color:var(--mta-muted);font-size:10px}.mta-import-help code{color:var(--mta-green)}
.mta-import-preview-summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-import-preview-summary span{color:var(--mta-muted);font-size:10px}.mta-import-preview-list{display:grid;gap:12px}.mta-import-preview-card{display:grid;grid-template-columns:minmax(0,1fr) 110px;gap:10px 14px;padding:14px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-import-preview-head{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:10px}.mta-import-preview-card>.mta-import-option-list{grid-column:1/-1}.mta-import-points{align-self:start}
.mta-exam-result-item.is-correct{border-color:color-mix(in srgb,var(--mta-green) 48%,var(--mta-border));background:color-mix(in srgb,var(--mta-green) 5%,var(--mta-surface-2))}.mta-exam-result-item.is-wrong{border-color:color-mix(in srgb,var(--mta-red) 48%,var(--mta-border));background:color-mix(in srgb,var(--mta-red) 5%,var(--mta-surface-2))}.mta-exam-result-choice{display:grid;grid-template-columns:28px minmax(0,1fr) auto;align-items:center;gap:10px;margin-top:10px;padding:10px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface)}.mta-exam-result-choice em{font-style:normal;font-size:10px;font-weight:800}.mta-exam-result-choice.is-correct em{color:var(--mta-green)}.mta-exam-result-choice.is-wrong em{color:var(--mta-red)}.mta-exam-result-choice.is-unanswered{grid-template-columns:1fr;color:var(--mta-muted)}
@media(max-width:760px){.mta-exam-question-modal,.mta-exam-import-modal,.mta-exam-import-preview-modal{padding:8px}.mta-exam-question-modal .mta-ui-modal-dialog,.mta-exam-import-modal .mta-ui-modal-dialog,.mta-exam-import-preview-modal .mta-ui-modal-dialog{width:100%;max-height:calc(100dvh - 16px)}.mta-exam-import-preview-modal .mta-ui-modal-dialog{height:calc(100dvh - 16px)}.mta-import-preview-card{grid-template-columns:1fr}.mta-import-preview-card>.mta-import-option-list,.mta-import-preview-head{grid-column:1}.mta-exam-modal-actions{align-items:stretch;flex-direction:column-reverse}.mta-exam-modal-actions .mta-btn{width:100%}}

@media(max-width:760px){.mta-security-number-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mta-security-summary-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mta-security-event-row{grid-template-columns:10px minmax(0,1fr) auto}.mta-security-event-row form{grid-column:2/-1;justify-self:end}.mta-exam-fullscreen-gate{align-items:flex-start;flex-direction:column}}
@media(max-width:520px){.mta-security-check-grid,.mta-security-number-grid,.mta-security-summary-grid{grid-template-columns:1fr}.mta-exam-running-meta{gap:6px}.mta-exam-running-meta .mta-badge{display:none}.mta-exam-save-status{max-width:120px;overflow:hidden;text-overflow:ellipsis}.mta-exam-security-notice,.mta-exam-session-gate{align-items:flex-start;flex-direction:column}}

/* Exam coding engine */
.mta-code-question-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.mta-code-test-builder{display:grid;gap:10px}.mta-code-test-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.mta-code-test-head>div{display:grid;gap:3px}.mta-code-test-head small{color:var(--mta-muted);font-size:9px}.mta-code-test-list{display:grid;gap:10px}.mta-code-test-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-code-test-row-head{grid-column:1/-1;display:grid;grid-template-columns:auto minmax(120px,180px) 32px;align-items:center;gap:8px}.mta-code-test-row-head strong{font-size:10px}.mta-code-test-remove{display:grid;place-items:center;width:30px;height:30px;padding:0;border:1px solid var(--mta-border);border-radius:7px;background:transparent;color:var(--mta-muted);font:700 18px/1 var(--mta-font);cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}.mta-code-test-remove:hover{border-color:var(--mta-red);background:color-mix(in srgb,var(--mta-red) 8%,var(--mta-surface));color:var(--mta-red)}.mta-code-test-remove:disabled{opacity:.28;cursor:not-allowed}.mta-code-auto-help{margin:0}
.mta-exam-code-workspace{display:grid;gap:12px}.mta-exam-code-meta{display:flex;align-items:center;flex-wrap:wrap;gap:7px;color:var(--mta-muted);font-size:9px;font-weight:700}.mta-exam-sample-tests{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:8px}.mta-exam-sample-tests article{display:grid;gap:8px;padding:10px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface)}.mta-exam-sample-tests article>strong{font-size:10px}.mta-exam-sample-tests article>div{display:grid;gap:3px}.mta-exam-sample-tests span{color:var(--mta-muted);font-size:8px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}.mta-exam-sample-tests pre,.mta-code-output-block pre{margin:0;padding:8px;border:1px solid var(--mta-border);border-radius:7px;background:var(--mta-surface-2);white-space:pre-wrap;overflow-wrap:anywhere;font-family:var(--mta-mono);font-size:11px;line-height:1.5}.mta-exam-monaco{height:330px;border:1px solid var(--mta-border);border-radius:8px;overflow:hidden;background:var(--mta-surface-2)}.mta-exam-code-label:has(+ .mta-exam-monaco) textarea[hidden]{display:none}.mta-exam-code-run-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:12px}.mta-exam-code-run-actions{display:flex;align-items:center;gap:8px;padding-bottom:1px}.mta-exam-code-output{display:grid;gap:9px;padding:12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-exam-code-output[hidden]{display:none}.mta-exam-code-output-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.mta-exam-code-output-head span{color:var(--mta-muted);font-size:9px}.mta-exam-code-output-body{display:grid;gap:8px}.mta-code-run-result{display:grid;gap:8px;padding:10px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface)}.mta-code-run-result-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.mta-code-run-result small{color:var(--mta-muted);font-size:8px}.mta-code-output-block{display:grid;gap:4px}.mta-code-output-block>span{color:var(--mta-muted);font-size:8px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}.mta-judge-summary{display:flex;align-items:center;gap:8px;margin-top:8px}.mta-judge-summary small{color:var(--mta-muted);font-size:9px}
@media(max-width:760px){.mta-code-question-grid,.mta-code-test-row,.mta-exam-code-run-grid{grid-template-columns:1fr}.mta-exam-code-run-actions{align-items:stretch;flex-direction:column}.mta-exam-code-run-actions .mta-btn{width:100%}.mta-exam-monaco{height:280px}}

/* Coding Lab compiler workspace */
.mta-lab-mode-tabs{display:flex;align-items:center;gap:6px;padding:7px 12px;border-bottom:1px solid var(--mta-border);background:var(--mta-surface)}.mta-lab-mode-tab{display:inline-flex;align-items:center;justify-content:center;min-width:66px;height:30px;padding:0 12px;border:1px solid var(--mta-border-strong);border-radius:7px;color:var(--mta-muted);font-size:9px;font-weight:800;letter-spacing:.05em;text-decoration:none;transition:border-color .16s ease,background .16s ease,color .16s ease,transform .16s ease}.mta-lab-mode-tab:hover{border-color:var(--mta-green-strong);background:var(--mta-green-soft);color:var(--mta-green);transform:translateY(-1px)}.mta-lab-mode-tab.active{border-color:var(--mta-green-strong);background:var(--mta-green-soft);color:var(--mta-green)}.mta-lab-runner-meta{color:var(--mta-muted);font-size:9px;font-weight:700;white-space:nowrap}.mta-compiler-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(340px,.65fr);flex:1;min-height:0}.mta-compiler-editor-pane{min-height:0}.mta-compiler-monaco{width:100%;height:100%;min-height:0;background:var(--mta-surface-2)}.mta-compiler-runner-pane{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--mta-surface)}.mta-compiler-status{color:var(--mta-green);font-size:8px;font-weight:800;letter-spacing:.05em}.mta-compiler-runner-body{display:flex;flex-direction:column;gap:12px;min-height:0;height:100%;padding:12px;overflow:auto;background:var(--mta-surface)}.mta-compiler-input-field{display:grid;gap:6px}.mta-compiler-input-field>span{display:flex;align-items:center;justify-content:space-between;color:var(--mta-text);font-size:9px;font-weight:800;letter-spacing:.05em}.mta-compiler-input-field small{color:var(--mta-muted);font-size:8px;font-weight:600;text-transform:none;letter-spacing:0}.mta-compiler-stdin{width:100%;min-height:130px;resize:vertical;padding:11px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2);color:var(--mta-text);font:12px/1.55 var(--mta-mono);outline:0}.mta-compiler-stdin:focus{border-color:var(--mta-green-strong);box-shadow:0 0 0 2px color-mix(in srgb,var(--mta-green) 12%,transparent)}.mta-compiler-actions{display:flex;align-items:center;gap:8px}.mta-compiler-output{display:grid;gap:10px;min-height:170px;padding:12px;border:1px solid var(--mta-border);border-radius:9px;background:var(--mta-surface-2)}.mta-compiler-output-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.mta-compiler-output-head strong{font-size:9px;letter-spacing:.05em}.mta-compiler-output-head span{color:var(--mta-muted);font-size:8px;text-align:right}.mta-compiler-stdout{min-height:82px;margin:0;padding:10px;border:1px solid var(--mta-border);border-radius:7px;background:var(--mta-surface);color:var(--mta-text);white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.55 var(--mta-mono)}.mta-compiler-diagnostics{display:grid;gap:8px}.mta-compiler-diagnostic{display:grid;gap:4px;padding:9px;border:1px solid color-mix(in srgb,var(--mta-red) 48%,var(--mta-border));border-radius:7px;background:color-mix(in srgb,var(--mta-red) 8%,var(--mta-surface))}.mta-compiler-diagnostic span{color:var(--mta-red);font-size:8px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}.mta-compiler-diagnostic pre{margin:0;color:var(--mta-text);white-space:pre-wrap;overflow-wrap:anywhere;font:11px/1.5 var(--mta-mono)}
@media(max-width:900px){.mta-compiler-grid{grid-template-columns:1fr;grid-template-rows:minmax(360px,1fr) auto}.mta-compiler-editor-pane{border-right:0;border-bottom:1px solid var(--mta-border)}.mta-compiler-runner-pane{max-height:45dvh}.mta-lab-runner-meta{display:none}}
@media(max-width:560px){.mta-lab-mode-tabs{overflow-x:auto}.mta-lab-mode-tab{flex:0 0 auto}.mta-compiler-actions{align-items:stretch;flex-direction:column}.mta-compiler-actions .mta-btn{width:100%}.mta-compiler-runner-pane{max-height:50dvh}}

/* Olympiad + Codeforces engine */
.mta-olympiad-page{max-width:var(--mta-content);margin:0 auto}.mta-page-back{margin-bottom:14px}.mta-olympiad-team-panel{margin-bottom:18px}.mta-olympiad-table{min-width:980px}.mta-cf-handle{color:var(--mta-green);font-weight:700;text-decoration:none}.mta-cf-handle:hover{text-decoration:underline}.mta-cf-student-detail{margin-bottom:18px}.mta-cf-detail-grid{display:grid;grid-template-columns:minmax(280px,360px) minmax(0,1fr);gap:18px;margin-top:16px}.mta-cf-link-form{padding:14px;border:1px solid var(--mta-border);border-radius:9px;background:var(--mta-surface-2)}.mta-cf-sync-form{margin-top:8px}.mta-cf-stat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.mta-cf-stat{display:grid;align-content:center;gap:3px;min-height:76px;padding:11px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-cf-stat strong{font-size:15px}.mta-cf-stat span{color:var(--mta-muted);font-size:9px}.mta-cf-history-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:16px;padding-top:16px;border-top:1px solid var(--mta-border)}.mta-cf-history-grid h3{margin-bottom:9px;font-size:13px}.mta-cf-mini-list{display:grid;gap:6px}.mta-cf-mini-list>a,.mta-cf-mini-list>div{display:grid;grid-template-columns:minmax(90px,auto) minmax(0,1fr);align-items:center;gap:10px;padding:8px 10px;border:1px solid var(--mta-border);border-radius:7px;background:var(--mta-surface-2);color:var(--mta-text);text-decoration:none}.mta-cf-mini-list>a:hover{border-color:var(--mta-border-strong)}.mta-cf-mini-list strong{font-size:10px}.mta-cf-mini-list span{min-width:0;overflow:hidden;color:var(--mta-muted);font-size:9px;text-overflow:ellipsis;white-space:nowrap}.mta-positive{color:var(--mta-green)}.mta-negative{color:var(--mta-red)}.mta-olympiad-assignment-cols{margin-top:18px}.mta-assignment-list{display:grid;gap:8px}.mta-assignment-card{display:grid;grid-template-columns:minmax(0,1fr) 120px auto;align-items:center;gap:14px;padding:12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-assignment-copy{display:grid;min-width:0;gap:4px}.mta-assignment-copy strong{font-size:11px}.mta-assignment-copy>span{color:var(--mta-muted);font-size:9px}.mta-assignment-progress{display:grid;gap:2px}.mta-assignment-progress strong{font-size:14px}.mta-assignment-progress span{color:var(--mta-muted);font-size:8px}.mta-student-cf-panel{margin-bottom:18px}.mta-cf-stat-grid-student{grid-template-columns:repeat(6,minmax(0,1fr));margin-top:16px}.mta-student-cf-actions{margin-top:14px;padding-top:14px;border-top:1px solid var(--mta-border)}.mta-student-cf-actions .mta-cf-link-form{grid-template-columns:minmax(220px,1fr) auto;align-items:end}.mta-student-cf-actions .mta-cf-link-form .mta-form-actions{align-self:end}.mta-student-problem-list{display:grid;gap:9px}.mta-student-problem-card{display:grid;grid-template-columns:10px minmax(0,1fr) 110px auto;align-items:center;gap:12px;padding:13px;border:1px solid var(--mta-border);border-radius:9px;background:var(--mta-surface)}.mta-problem-status-dot{width:9px;height:9px;border-radius:999px;background:var(--mta-faint)}.mta-student-problem-card[data-status=accepted] .mta-problem-status-dot{background:var(--mta-green)}.mta-student-problem-card[data-status=attempted] .mta-problem-status-dot{background:var(--mta-amber)}.mta-problem-state{display:grid;justify-items:start;gap:3px}.mta-problem-state small{color:var(--mta-red);font-size:8px;font-weight:800}.mta-assignment-status-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-bottom:14px}.mta-assignment-status-summary>div{display:grid;gap:2px;padding:10px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}.mta-assignment-status-summary strong{font-size:16px}.mta-assignment-status-summary span{color:var(--mta-muted);font-size:9px}.mta-assignment-status-table{min-width:780px}.mta-assignment-status-table .mta-btn{min-height:30px;padding:6px 10px}
@media(max-width:900px){.mta-cf-detail-grid,.mta-cf-history-grid,.mta-olympiad-assignment-cols{grid-template-columns:1fr}.mta-cf-stat-grid-student{grid-template-columns:repeat(3,minmax(0,1fr))}.mta-assignment-card{grid-template-columns:minmax(0,1fr) auto}.mta-assignment-progress{grid-column:1}.mta-student-problem-card{grid-template-columns:10px minmax(0,1fr) auto}.mta-student-problem-card>.mta-form-actions{grid-column:2/-1}.mta-problem-state{justify-self:end}}
@media(max-width:620px){.mta-assignment-status-summary{grid-template-columns:repeat(2,minmax(0,1fr))}.mta-cf-stat-grid,.mta-cf-stat-grid-student{grid-template-columns:repeat(2,minmax(0,1fr))}.mta-student-cf-actions .mta-cf-link-form{grid-template-columns:1fr}.mta-student-problem-card{grid-template-columns:10px minmax(0,1fr)}.mta-problem-state,.mta-student-problem-card>.mta-form-actions{grid-column:2;justify-self:start}.mta-student-problem-card>.mta-form-actions{align-items:stretch;flex-direction:column}.mta-student-problem-card>.mta-form-actions .mta-btn{width:100%}.mta-assignment-card{grid-template-columns:1fr}.mta-assignment-progress{grid-column:1}.mta-assignment-card>.mta-form-actions{justify-self:start}}
.mta-cf-handle-cell{display:flex;align-items:center;flex-wrap:wrap;gap:6px}.mta-cf-verification-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;padding:10px 12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}
@media(max-width:620px){.mta-cf-verification-row{align-items:flex-start;flex-direction:column}}

/* Bilingual content editor */
.mta-translation-details{display:grid;gap:10px;padding:12px;border:1px solid var(--mta-border);border-radius:8px;background:var(--mta-surface-2)}
.mta-translation-details[open]>summary{margin-bottom:2px}
.mta-translation-details>.mta-muted{margin:0 0 2px;font-size:9px;line-height:1.5}

/* Web Coding Lab console */
.mta-web-console{flex:0 1 auto;min-height:32px;max-height:42%;overflow:auto;border-top:1px solid var(--mta-border);background:var(--mta-surface-2);color:var(--mta-text)}
.mta-web-console summary{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:32px;padding:7px 12px;cursor:pointer;font-size:11px;font-weight:700}
.mta-web-console summary:focus-visible{outline:2px solid var(--mta-green);outline-offset:-2px}
.mta-web-console [data-web-console-count]{color:var(--mta-muted);font-size:10px}
.mta-web-console-toolbar{display:flex;justify-content:flex-end;padding:4px 10px 8px}
.mta-web-console-entries{padding:0 10px 10px}
.mta-web-console-entry{padding:8px 0;border-top:1px solid var(--mta-border)}
.mta-web-console-entry>span{font-size:10px;font-weight:700;color:var(--mta-muted)}
.mta-web-console-entry[data-level="error"]>span{color:var(--mta-red)}
.mta-web-console-entry[data-level="warn"]>span{color:var(--mta-gold,#eab308)}
.mta-web-console-entry pre{margin:4px 0 0;white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.5 var(--mta-mono);color:var(--mta-text)}

/* Student reading controls; editable answers retain native selection. */
.mta-study-locked,.mta-study-locked *{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.mta-study-locked input:not([readonly]):not([disabled]),.mta-study-locked textarea:not([readonly]):not([disabled]),.mta-study-locked [contenteditable]:not([contenteditable="false"]),.mta-study-locked [contenteditable]:not([contenteditable="false"]) *,.mta-study-locked .monaco-editor,.mta-study-locked .monaco-editor *{-webkit-user-select:text;user-select:text;-webkit-touch-callout:default}