/* ═══════════════════════════════════════════════════════════════════ PHYS 172 Exam Prep: design system ═══════════════════════════════════════════════════════════════════ */ :root { --white: #ffffff; --grey-25: #fafafa; --grey-50: #f5f5f7; --grey-100: #e8e8ed; --grey-200: #d2d2d7; --grey-300: #b8b8bd; --grey-400: #86868b; --grey-600: #6e6e73; --grey-800: #1d1d1f; --black: #000000; --accent: #0071e3; --accent-hover: #0077ed; --accent-soft: rgba(0, 113, 227, 0.10); /* focus rings only, never a surface */ --success: #1a7f37; --warning: #b25e09; --danger: #d70015; --gold: #b8730a; /* Surfaces are solid, never alpha over content: alpha tints read as washed-out "glass" and shift with whatever sits behind them. Color carries meaning through icons and small marks; text stays near-black for legibility. */ --green-tint: #f0f8f2; --green-line: #d3e7d9; --red-tint: #fdf3f2; --red-line: #f2dbd9; --blue-tint: #f0f6fd; --blue-line: #d9e6f7; --amber-tint: #fdf8ef; --amber-line: #efe1c8; --font: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, sans-serif; --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace; --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-xl: 22px; --radius-full: 980px; --shadow-sm: 0 1px 2px rgba(0,0,0,0.04), 0 1px 6px rgba(0,0,0,0.04); --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.04); --shadow-lg: 0 18px 50px rgba(0,0,0,0.16), 0 2px 8px rgba(0,0,0,0.06); --ease: cubic-bezier(0.4, 0, 0.2, 1); --t-fast: 150ms var(--ease); --t-med: 260ms var(--ease); --header-h: 56px; --panel-left-w: 400px; --panel-right-w: 380px; --touch: 36px; --safe-b: env(safe-area-inset-bottom, 0px); } *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; } html, body { height: 100%; overflow: hidden; } html { -webkit-text-size-adjust: 100%; overflow-anchor: none; } body { font-family: var(--font); font-size: 15px; line-height: 1.55; color: var(--grey-800); background: var(--grey-50); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; display: flex; flex-direction: column; overflow: hidden; overscroll-behavior: none; } button, input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; } button { cursor: pointer; border: none; background: none; touch-action: manipulation; -webkit-tap-highlight-color: transparent; } button:disabled { cursor: not-allowed; } svg { display: block; } .hidden { display: none !important; } strong, b { font-weight: 600; } code { font-family: var(--mono); font-size: 0.92em; background: var(--grey-100); padding: 1px 5px; border-radius: 5px; } ::-webkit-scrollbar { width: 8px; height: 8px; } ::-webkit-scrollbar-track { background: transparent; } ::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.14); border-radius: 10px; border: 2px solid transparent; background-clip: padding-box; } ::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.28); background-clip: padding-box; } /* icons in buttons */ button svg, .icon-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; } /* ── Generic controls ─────────────────────────────────────────────── */ .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 20px; min-height: 40px; font-size: 14px; font-weight: 600; letter-spacing: -0.005em; border-radius: var(--radius-full); transition: background var(--t-fast), transform var(--t-fast), opacity var(--t-fast), box-shadow var(--t-fast); white-space: nowrap; } .btn:active { transform: scale(0.98); } .btn-primary { background: var(--accent); color: var(--white); } .btn-primary:hover { background: var(--accent-hover); } .btn-primary:disabled { background: var(--grey-200); color: var(--grey-400); } .btn-secondary { background: var(--grey-100); color: var(--grey-800); } .btn-secondary:hover { background: var(--grey-200); } .btn-dark { background: var(--black); color: var(--white); } .btn-dark:hover { opacity: 0.85; } .btn-block { width: 100%; } .btn-sm { padding: 7px 14px; min-height: 32px; font-size: 13px; } .btn-link { background: none; color: var(--grey-600); font-size: 13px; font-weight: 500; padding: 8px 4px; } .btn-link:hover { color: var(--black); } .text-btn { font-size: 13px; font-weight: 500; color: var(--grey-800); padding: 7px 12px; border-radius: var(--radius-sm); border: 1px solid var(--grey-200); background: var(--white); transition: background var(--t-fast), border-color var(--t-fast); min-height: var(--touch); } .text-btn:hover { background: var(--grey-50); border-color: var(--grey-300); } .text-btn.subtle { border-color: transparent; background: transparent; color: var(--grey-600); } .text-btn.subtle:hover { background: var(--grey-100); color: var(--grey-800); } .icon-btn { display: inline-flex; align-items: center; justify-content: center; width: var(--touch); height: var(--touch); border-radius: 9px; color: var(--grey-600); transition: background var(--t-fast), color var(--t-fast); flex-shrink: 0; } .icon-btn:hover { background: var(--grey-100); color: var(--black); } .icon-btn:disabled { opacity: 0.4; } .icon-btn.active { background: var(--grey-800); color: var(--white); } .pill-btn { display: inline-flex; align-items: center; gap: 8px; padding: 0 18px; height: 40px; font-size: 14px; font-weight: 600; border-radius: var(--radius-full); border: 1.5px solid var(--grey-200); background: var(--white); color: var(--grey-800); transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast), opacity var(--t-fast); white-space: nowrap; } .pill-btn:hover { border-color: var(--grey-400); background: var(--grey-25); } .pill-btn:active { transform: scale(0.98); } .pill-btn.primary { background: var(--accent); border-color: var(--accent); color: var(--white); box-shadow: 0 6px 18px rgba(0,113,227,0.28); } .pill-btn.primary:hover { background: var(--accent-hover); } .pill-btn.primary:disabled { background: var(--grey-100); border-color: var(--grey-100); color: var(--grey-400); box-shadow: none; } .pill-btn:disabled { border-color: var(--grey-100); color: var(--grey-400); background: var(--grey-50); } .pill-btn svg { width: 18px; height: 18px; } .chip { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; min-height: 30px; border-radius: var(--radius-full); border: 1px solid var(--grey-200); background: var(--white); font-size: 12.5px; font-weight: 500; color: var(--grey-800); transition: background var(--t-fast), border-color var(--t-fast); white-space: nowrap; } .chip:hover { background: var(--grey-50); border-color: var(--grey-300); } .chip:disabled { opacity: 0.5; } .segmented { display: inline-flex; padding: 3px; background: var(--grey-100); border-radius: 10px; gap: 2px; } .seg-btn { display: inline-flex; align-items: center; gap: 7px; padding: 0 14px; height: 32px; border-radius: 8px; font-size: 13px; font-weight: 600; color: var(--grey-600); transition: background var(--t-fast), color var(--t-fast), box-shadow var(--t-fast); } .seg-btn svg { width: 15px; height: 15px; } .seg-btn.active { background: var(--white); color: var(--black); box-shadow: var(--shadow-sm); } .seg-btn:not(.active):hover { color: var(--grey-800); } input[type="text"], textarea, select { width: 100%; padding: 11px 14px; border: 1.5px solid var(--grey-200); border-radius: var(--radius-md); background: var(--white); outline: none; font-size: 15px; line-height: 1.4; transition: border-color var(--t-fast), box-shadow var(--t-fast); } input[type="text"]:focus, textarea:focus, select:focus { border-color: var(--grey-800); } textarea { resize: vertical; } select { appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236e6e73' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; background-size: 16px; padding-right: 36px; } .field-error { min-height: 18px; font-size: 12.5px; color: var(--danger); font-weight: 500; margin: 6px 0 4px; } .spinner { width: 18px; height: 18px; border: 2px solid var(--grey-200); border-top-color: var(--grey-800); border-radius: 50%; animation: spin 0.8s linear infinite; display: inline-block; flex-shrink: 0; } @keyframes spin { to { transform: rotate(360deg); } } @keyframes fadeUp { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } } @keyframes pop { 0% { transform: scale(0.96); opacity: 0; } 100% { transform: scale(1); opacity: 1; } } /* ── KaTeX + markdown inside content areas ────────────────────────── */ .katex { font-size: 1.05em; } .katex-display { margin: 10px 0; overflow-x: auto; overflow-y: hidden; padding: 2px 0; } .md p { margin: 0 0 10px; } .md p:last-child { margin-bottom: 0; } .md ul, .md ol { padding-left: 20px; margin: 0 0 10px; } .md li { margin-bottom: 4px; } .md h1, .md h2, .md h3, .md h4 { font-size: 14px; font-weight: 700; margin: 12px 0 6px; letter-spacing: -0.01em; } .md h1:first-child, .md h2:first-child, .md h3:first-child { margin-top: 0; } .md blockquote { border-left: 3px solid var(--grey-200); padding-left: 12px; color: var(--grey-600); margin: 8px 0; } .md code { font-size: 0.9em; } .md pre { background: var(--grey-50); border-radius: var(--radius-sm); padding: 10px 12px; overflow-x: auto; margin: 8px 0; } .md pre code { background: none; padding: 0; } .md table { border-collapse: collapse; margin: 8px 0; font-size: 13.5px; } .md th, .md td { border: 1px solid var(--grey-200); padding: 5px 9px; } /* ═══════════════════════════════════════════════════════════════════ Start screen ═══════════════════════════════════════════════════════════════════ */ /* Centred content on a plain ground, not a heavy card floating on grey. The container is a hairline and a whisper of shadow; the type and the spacing do the work. */ .screen { position: fixed; inset: 0; z-index: 800; display: flex; align-items: center; justify-content: center; padding: 24px; background: var(--white); overflow-y: auto; } .start-card { width: 100%; max-width: 396px; background: var(--white); border: 1px solid var(--grey-100); border-radius: 20px; box-shadow: 0 1px 2px rgba(0,0,0,0.03), 0 8px 28px rgba(0,0,0,0.05); padding: 34px 32px 28px; animation: pop 320ms var(--ease); } .start-card h1 { font-size: 31px; font-weight: 600; letter-spacing: -0.033em; line-height: 1.1; margin-bottom: 10px; } .start-sub { font-size: 15px; line-height: 1.5; color: var(--grey-600); margin-bottom: 28px; } .start-loading { display: flex; align-items: center; gap: 10px; color: var(--grey-600); font-size: 13.5px; padding: 12px 0; } .start-resume { display: flex; flex-direction: column; gap: 4px; } .resume-line { font-size: 14px; color: var(--grey-600); margin-bottom: 10px; } .resume-line strong { color: var(--grey-800); font-weight: 600; } .login-form label { display: block; font-size: 12.5px; font-weight: 600; color: var(--grey-600); margin-bottom: 6px; } .login-hint { font-size: 12px; color: var(--grey-400); margin-top: 14px; line-height: 1.5; } .start-error { padding: 14px; border-radius: var(--radius-md); background: var(--red-tint); border: 1px solid var(--red-line); color: var(--danger); font-size: 13.5px; display: flex; flex-direction: column; gap: 10px; } /* ═══════════════════════════════════════════════════════════════════ Header ═══════════════════════════════════════════════════════════════════ */ .app-header { height: var(--header-h); flex-shrink: 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 0 12px 0 8px; gap: 12px; background: rgba(255,255,255,0.92); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); border-bottom: 1px solid var(--grey-100); position: relative; z-index: 40; } .header-left { display: flex; align-items: center; gap: 6px; min-width: 0; } .header-q { font-size: 15px; font-weight: 600; color: var(--black); letter-spacing: -0.015em; white-space: nowrap; padding-left: 2px; font-variant-numeric: tabular-nums; } .header-center { display: flex; justify-content: center; } .mode-pill { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: var(--radius-full); background: var(--grey-100); font-size: 13px; font-weight: 600; color: var(--grey-800); white-space: nowrap; transition: background var(--t-med), color var(--t-med); } .mode-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--grey-800); } .mode-pill.friendly { background: var(--blue-tint); color: var(--accent); } .mode-pill.friendly .mode-dot { background: var(--accent); } .mode-pill.locked { background: var(--grey-100); color: var(--grey-600); } .header-right { display: flex; align-items: center; justify-content: flex-end; gap: 8px; } /* Sync is ambient: a quiet grey mark that only takes on color when something is wrong. */ .sync-status { display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; border-radius: var(--radius-full); font-size: 12px; font-weight: 500; color: var(--grey-400); background: transparent; border: 1px solid transparent; white-space: nowrap; transition: color var(--t-med), background var(--t-med), border-color var(--t-med); cursor: default; } .sync-icon { width: 14px; height: 14px; display: inline-flex; } .sync-icon svg { width: 14px; height: 14px; } .sync-status.saving { color: var(--grey-600); } .sync-status.saved { color: var(--grey-400); } .sync-status.error { color: var(--danger); background: var(--red-tint); border-color: var(--red-line); cursor: pointer; } .sync-status.offline { color: var(--warning); background: var(--amber-tint); border-color: var(--amber-line); } .sync-status.quiet .sync-text { display: none; } .stars-chip { display: inline-flex; align-items: center; gap: 5px; padding: 5px 11px; border-radius: var(--radius-full); background: var(--grey-50); border: 1px solid var(--grey-100); font-size: 13px; font-weight: 600; color: var(--grey-800); white-space: nowrap; font-variant-numeric: tabular-nums; } .stars-chip .star { color: var(--gold); font-size: 12px; } .stars-chip.bump { animation: starBump 600ms var(--ease); } @keyframes starBump { 0% { transform: scale(1); } 30% { transform: scale(1.14); } 100% { transform: scale(1); } } .stars-mult { font-size: 11px; font-weight: 600; background: var(--amber-tint); border: 1px solid var(--amber-line); color: #8a5000; border-radius: 6px; padding: 0 6px; margin-left: 2px; } .user-menu { position: relative; } .user-btn { width: 34px; height: 34px; border-radius: 50%; background: var(--grey-800); color: var(--white); font-size: 12.5px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; letter-spacing: 0.02em; transition: transform var(--t-fast), box-shadow var(--t-fast); } .user-btn:hover { box-shadow: 0 0 0 3px var(--grey-200); } .dropdown { position: absolute; top: calc(100% + 8px); right: 0; min-width: 220px; background: var(--white); border: 1px solid var(--grey-100); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); padding: 6px; z-index: 60; animation: fadeUp 160ms var(--ease); } .dropdown-name { font-size: 12px; color: var(--grey-400); padding: 8px 10px 6px; font-weight: 600; letter-spacing: 0.02em; } .dropdown-item { display: block; width: 100%; text-align: left; padding: 9px 10px; border-radius: 8px; font-size: 13.5px; font-weight: 500; color: var(--grey-800); } .dropdown-item:hover { background: var(--grey-50); } /* ═══════════════════════════════════════════════════════════════════ Main three-column layout ═══════════════════════════════════════════════════════════════════ */ .app-main { flex: 1; display: flex; min-height: 0; position: relative; background: var(--grey-50); } .side-panel { display: flex; flex-direction: column; background: var(--white); min-height: 0; flex: 0 0 auto; overflow: hidden; transition: width var(--t-med), min-width var(--t-med), opacity var(--t-med), transform var(--t-med); } .side-panel.left { width: var(--panel-left-w); border-right: 1px solid var(--grey-100); } .side-panel.right { width: var(--panel-right-w); border-left: 1px solid var(--grey-100); } .side-panel.collapsed { width: 0 !important; min-width: 0; border-width: 0; opacity: 0; pointer-events: none; } .side-panel.no-anim { transition: none; } .panel-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 10px 12px 18px; border-bottom: 1px solid var(--grey-100); flex-shrink: 0; min-height: 54px; } .panel-head-title { display: flex; align-items: center; gap: 10px; min-width: 0; } .panel-head h2 { font-size: 15px; font-weight: 700; letter-spacing: -0.01em; white-space: nowrap; } .difficulty-badge { font-size: 11px; font-weight: 600; color: var(--grey-600); background: var(--grey-100); padding: 2px 8px; border-radius: 6px; white-space: nowrap; } @keyframes pulse { 50% { opacity: 0.4; } } .panel-body { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 16px 18px 28px; display: flex; flex-direction: column; gap: 14px; -webkit-overflow-scrolling: touch; } .card-section { animation: fadeUp 220ms var(--ease); } .resizer { width: 6px; flex: 0 0 6px; cursor: col-resize; background: transparent; position: relative; z-index: 5; transition: background var(--t-fast); margin: 0 -3px; } .resizer:hover, .resizer.dragging { background: var(--blue-tint); } .resizer.hidden { display: none; } /* Attempts */ .attempts-bar { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; } .attempt-chip { padding: 5px 11px; border-radius: var(--radius-full); border: 1px solid var(--grey-200); background: var(--white); font-size: 12px; font-weight: 600; color: var(--grey-600); display: inline-flex; align-items: center; gap: 6px; transition: all var(--t-fast); } .attempt-chip:hover { border-color: var(--grey-400); } .attempt-chip.active { background: var(--grey-800); border-color: var(--grey-800); color: var(--white); } .attempt-chip .st { font-size: 10px; } /* Problem text */ .problem-text { font-size: 14.5px; line-height: 1.65; color: var(--grey-800); } .problem-text p { margin: 0 0 10px; } .problem-text p:last-child { margin-bottom: 0; } /* Every reviewer tried to click these. Bordered, tinted cards with a filled circular badge are button styling, and no amount of explaining fixes an affordance. The options are a list you answer FROM, not a control, so they are drawn as a list: no box, no fill, the letter as a plain label. The hanging indent keeps wrapped lines under the text. */ .problem-text ol.mc { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-direction: column; gap: 3px; } .problem-text ol.mc li { display: flex; align-items: baseline; gap: 9px; padding: 3px 2px; } .problem-text .mc-letter { flex: 0 0 auto; min-width: 15px; color: var(--grey-600); font-size: 13.5px; font-weight: 700; font-variant-numeric: tabular-nums; } .problem-text .mc-letter::after { content: "."; } .problem-text .mc-body { flex: 1; min-width: 0; } .problem-text ol.statements { padding-left: 0; list-style: none; margin: 8px 0 12px; display: flex; flex-direction: column; gap: 6px; } .problem-text ol.statements li { padding: 8px 10px; border-left: 3px solid var(--grey-200); background: var(--grey-25); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: 13.5px; } .problem-diagram { margin-top: 14px; border: 1px solid var(--grey-100); border-radius: var(--radius-md); background: var(--white); padding: 12px; display: flex; flex-direction: column; align-items: center; gap: 6px; } .problem-diagram img, .problem-diagram svg { max-width: 100%; height: auto; display: block; } .problem-diagram .diagram-caption { font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--grey-400); } .problem-diagram .diagram-note { font-size: 11.5px; line-height: 1.45; color: var(--grey-600); text-align: center; max-width: 42ch; border-top: 1px dashed var(--grey-200); padding-top: 6px; } .problem-diagram.zoomable { cursor: zoom-in; } /* Results */ /* Verdict: the icon carries the colour, the type stays near-black and readable. */ .verdict-banner { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: var(--radius-md); background: var(--grey-50); border: 1px solid var(--grey-100); margin-bottom: 12px; } .verdict-banner h3 { font-size: 15px; font-weight: 600; letter-spacing: -0.015em; margin-bottom: 2px; color: var(--black); } .verdict-banner p { font-size: 13px; color: var(--grey-600); } .verdict-icon { width: 26px; height: 26px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-weight: 600; font-size: 14px; line-height: 1; flex-shrink: 0; margin-top: 1px; background: var(--grey-300); color: var(--white); } .verdict-banner.correct { background: var(--green-tint); border-color: var(--green-line); } .verdict-banner.correct .verdict-icon { background: #34c759; } .verdict-banner.incorrect { background: var(--red-tint); border-color: var(--red-line); } .verdict-banner.incorrect .verdict-icon { background: #ff3b30; } .verdict-banner.check { background: var(--blue-tint); border-color: var(--blue-line); } .verdict-banner.check .verdict-icon { background: var(--accent); } .verdict-banner.error { background: var(--amber-tint); border-color: var(--amber-line); } .verdict-banner.error .verdict-icon { background: #ff9f0a; } .feedback-body { font-size: 14px; line-height: 1.6; color: var(--grey-800); margin-bottom: 12px; } /* ── Results in the centre pane ───────────────────────────────────── */ /* The annotated submission needs room: at side-panel width the grader's boxes are too small to read, so the panel keeps the verdict and this opens the full view. */ .see-results-btn { display: flex; align-items: center; gap: 12px; width: 100%; padding: 10px; margin-bottom: 14px; border-radius: var(--radius-md); border: 1px solid var(--grey-200); background: var(--white); text-align: left; transition: border-color var(--t-fast), background var(--t-fast); } .see-results-btn:hover { border-color: var(--grey-400); background: var(--grey-25); } .see-results-btn svg { width: 16px; height: 16px; color: var(--grey-400); flex-shrink: 0; } .srb-thumb { flex: 0 0 52px; height: 52px; border-radius: 8px; overflow: hidden; background: var(--grey-50); border: 1px solid var(--grey-100); display: flex; align-items: center; justify-content: center; } .srb-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top center; } .srb-body { flex: 1; min-width: 0; } .srb-title { display: block; font-size: 13.5px; font-weight: 600; color: var(--black); } .srb-sub { display: block; font-size: 12px; color: var(--grey-600); margin-top: 1px; } .results-scroll { position: absolute; inset: 0; overflow-y: auto; padding: 22px 20px 40px; -webkit-overflow-scrolling: touch; } .results-stage { max-width: 900px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; } .results-stage-head h3 { font-size: 16px; font-weight: 600; letter-spacing: -0.015em; } .results-stage-head p { font-size: 13px; color: var(--grey-600); margin-top: 2px; } .results-notes { display: flex; flex-direction: column; gap: 6px; } .result-note { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border-radius: var(--radius-md); border: 1px solid var(--grey-100); background: var(--white); text-align: left; width: 100%; transition: border-color var(--t-fast), background var(--t-fast); } .result-note:hover, .result-note.active { border-color: var(--grey-300); background: var(--grey-25); } .result-note .rn-num { flex: 0 0 20px; height: 20px; border-radius: 50%; color: var(--white); font-size: 11px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; margin-top: 1px; } .result-note.green .rn-num { background: #34c759; } .result-note.orange .rn-num { background: #ff9f0a; } .result-note.red .rn-num { background: #ff3b30; } .result-note .rn-body { flex: 1; min-width: 0; font-size: 13.5px; line-height: 1.5; color: var(--grey-800); } .results-empty { font-size: 13px; color: var(--grey-400); padding: 6px 2px; } .graded-image-wrap { position: relative; width: 100%; border: 1px solid var(--grey-200); border-radius: var(--radius-md); overflow: hidden; background: var(--white); touch-action: manipulation; } .graded-image-wrap img { display: block; width: 100%; height: auto; } .bbox { position: absolute; border: 2.5px solid; border-radius: 5px; cursor: pointer; background: rgba(255,255,255,0.04); transition: background var(--t-fast); } .bbox.green { border-color: #34c759; } .bbox.orange { border-color: #ff9f0a; } .bbox.red { border-color: #ff3b30; } .bbox:hover, .bbox.active { background: rgba(0,0,0,0.06); } .bbox-num { position: absolute; top: -10px; left: -10px; width: 20px; height: 20px; border-radius: 50%; color: var(--white); font-size: 11px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; } .bbox.green .bbox-num { background: #34c759; } .bbox.orange .bbox-num { background: #ff9f0a; } .bbox.red .bbox-num { background: #ff3b30; } .bbox-tooltip { position: absolute; z-index: 5; max-width: 280px; background: var(--black); color: var(--white); border-radius: var(--radius-sm); padding: 9px 12px; font-size: 12.5px; line-height: 1.45; box-shadow: var(--shadow-md); pointer-events: none; } .bbox-tooltip * { color: var(--white) !important; } .bbox-hint { font-size: 11.5px; color: var(--grey-400); margin-bottom: 12px; } .next-actions { display: flex; flex-direction: column; gap: 10px; } .next-title { font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--grey-400); margin-bottom: 2px; } .action-row { display: grid; grid-template-columns: 1fr; gap: 8px; } .action-btn { display: flex; align-items: center; gap: 12px; text-align: left; padding: 12px 14px; border-radius: var(--radius-md); border: 1.5px solid var(--grey-200); background: var(--white); transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast); } .action-btn:hover { border-color: var(--grey-400); background: var(--grey-25); } .action-btn:active { transform: scale(0.99); } .action-btn svg { width: 20px; height: 20px; flex-shrink: 0; color: var(--grey-600); } .action-btn .a-title { font-size: 13.5px; font-weight: 600; color: var(--black); display: block; } .action-btn .a-sub { font-size: 12px; color: var(--grey-600); display: block; margin-top: 1px; } .action-btn.primary { background: var(--accent); border-color: var(--accent); } .action-btn.primary svg, .action-btn.primary .a-title { color: var(--white); } .action-btn.primary .a-sub { color: rgba(255,255,255,0.8); } .action-btn.primary:hover { background: var(--accent-hover); } .action-btn.warm { background: var(--amber-tint); border-color: var(--amber-line); } .action-btn.warm svg { color: var(--warning); } .action-btn:disabled { opacity: 0.55; } .reward { color: var(--gold); font-weight: 700; letter-spacing: 1px; } .changed-note { margin-top: 12px; } .solution-body { font-size: 13.5px; line-height: 1.6; padding: 10px 0 0; } details { border: 1px solid var(--grey-100); border-radius: var(--radius-md); padding: 10px 14px; background: var(--grey-25); } summary { cursor: pointer; font-size: 13px; font-weight: 600; color: var(--grey-800); list-style: none; display: flex; align-items: center; gap: 8px; } summary::-webkit-details-marker { display: none; } summary::before { content: ""; width: 7px; height: 7px; border-right: 2px solid var(--grey-400); border-bottom: 2px solid var(--grey-400); transform: rotate(-45deg); transition: transform var(--t-fast); margin-left: 2px; } details[open] summary::before { transform: rotate(45deg); } /* ═══════════════════════════════════════════════════════════════════ Workspace ═══════════════════════════════════════════════════════════════════ */ .workspace { flex: 1; min-width: 0; display: flex; flex-direction: column; background: var(--grey-50); position: relative; } /* Three columns so the Notebook/Whiteboard switch sits centred in the workspace, with the utility buttons pinned right. */ .ws-toolbar { height: 50px; flex-shrink: 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 0 14px; gap: 10px; border-bottom: 1px solid var(--grey-100); background: rgba(255,255,255,0.8); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); } .ws-toolbar-right { display: flex; align-items: center; gap: 6px; justify-self: end; } .ws-body { flex: 1; position: relative; min-height: 0; } .ws-view { position: absolute; inset: 0; } /* Notebook */ .notebook-scroll { position: absolute; inset: 0; overflow-y: auto; padding: 22px 20px 120px; -webkit-overflow-scrolling: touch; } .notebook-page { max-width: 860px; margin: 0 auto; background: var(--white); border: 1px solid var(--grey-100); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 22px 22px 18px; min-height: 420px; } .nb-block { position: relative; display: flex; gap: 8px; margin: 0 0 6px; border-radius: var(--radius-md); transition: background var(--t-fast); } .nb-block:hover, .nb-block.focus { background: var(--grey-25); } .nb-gutter { flex: 0 0 26px; display: flex; flex-direction: column; align-items: center; padding-top: 6px; gap: 2px; opacity: 0; transition: opacity var(--t-fast); } .nb-block:hover .nb-gutter, .nb-block.focus .nb-gutter { opacity: 1; } .nb-gutter button { width: 24px; height: 24px; border-radius: 6px; color: var(--grey-400); display: inline-flex; align-items: center; justify-content: center; } .nb-gutter button:hover { background: var(--grey-100); color: var(--grey-800); } .nb-gutter button svg { width: 14px; height: 14px; } .nb-gutter .nb-index { font-size: 10px; color: var(--grey-300); font-weight: 600; margin-bottom: 2px; } .nb-main { flex: 1; min-width: 0; padding: 4px 6px 4px 0; } .nb-input { width: 100%; border: none; background: transparent; padding: 6px 8px; font-size: 15px; line-height: 1.6; resize: none; overflow: hidden; min-height: 40px; outline: none; border-radius: 8px; font-family: var(--font); color: var(--grey-800); } .nb-input:focus { background: var(--white); box-shadow: inset 0 0 0 1.5px var(--accent); } /* At grey-300 the prompt to start writing was read as disabled text, and reviewers went looking for somewhere else to type. It has to look like an invitation. */ .nb-input::placeholder { color: var(--grey-600); opacity: 1; font-weight: 500; } .nb-preview { padding: 6px 8px; font-size: 15px; line-height: 1.6; min-height: 40px; cursor: text; border-radius: 8px; word-wrap: break-word; } .nb-preview.empty { color: var(--grey-300); } .nb-preview .katex-display { margin: 6px 0; } .nb-drawing .nb-main { padding-right: 0; } .nb-canvas-wrap { position: relative; border: 1.5px solid var(--grey-200); border-radius: var(--radius-md); overflow: hidden; background: var(--white); } .nb-canvas-wrap.editing { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); } .nb-canvas { width: 100%; height: 340px; position: relative; } .nb-snapshot { display: block; width: 100%; max-height: 520px; object-fit: contain; background: var(--white); cursor: pointer; } .nb-snapshot-empty { display: flex; align-items: center; justify-content: center; height: 140px; color: var(--grey-400); font-size: 13px; cursor: pointer; gap: 8px; } .nb-drawing-bar { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 6px 8px; background: var(--grey-25); border-top: 1px solid var(--grey-100); } .nb-drawing-bar .lbl { font-size: 11.5px; font-weight: 600; color: var(--grey-400); letter-spacing: 0.04em; text-transform: uppercase; padding-left: 4px; } .nb-drawing-bar .actions { display: flex; gap: 6px; } .nb-drawing-bar .btn-sm { min-height: 30px; padding: 5px 12px; } .nb-resize { height: 8px; cursor: ns-resize; background: linear-gradient(to right, transparent 45%, var(--grey-200) 45%, var(--grey-200) 55%, transparent 55%); background-size: 40px 2px; background-repeat: no-repeat; background-position: center; } .add-block-bar { display: flex; align-items: center; gap: 8px; padding: 10px 6px 0 34px; flex-wrap: wrap; } .add-block-btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: var(--radius-full); border: 1px dashed var(--grey-300); font-size: 12.5px; font-weight: 600; color: var(--grey-600); transition: all var(--t-fast); min-height: 32px; } .add-block-btn svg { width: 14px; height: 14px; } .add-block-btn:hover { border-style: solid; border-color: var(--grey-800); color: var(--black); background: var(--white); } .add-block-hint { font-size: 12px; color: var(--grey-400); } /* Whiteboard */ .whiteboard-canvas { position: absolute; inset: 0; } .excalidraw .sidebar-trigger, .excalidraw .footer-center, .excalidraw .HelpDialog-btn, .excalidraw .encrypted-icon, .excalidraw .main-menu-trigger, .excalidraw .welcome-screen-center, .excalidraw .welcome-screen-decor, .excalidraw .layer-ui__wrapper__footer-right { display: none !important; } .excalidraw .dropdown-menu-group:has([data-testid*="mermaid"]), .excalidraw [data-testid*="mermaid"], .excalidraw [data-testid="image-to-diagram"] { display: none !important; } .excalidraw .App-menu__left { top: 70px !important; } .nb-canvas .excalidraw .App-menu__left { top: 56px !important; max-height: calc(100% - 70px); } .excalidraw--view-mode .App-toolbar { display: none !important; } /* Locked overlay */ /* A slim, non-blocking strip: the workspace is already read-only when locked, so a full-screen scrim was covering work the student may want to re-read. */ .ws-locked { position: absolute; top: 12px; left: 50%; transform: translateX(-50%); z-index: 8; display: flex; align-items: center; gap: 10px; padding: 7px 8px 7px 14px; border-radius: var(--radius-full); background: rgba(255,255,255,0.94); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid var(--grey-200); box-shadow: var(--shadow-md); font-size: 13px; font-weight: 500; color: var(--grey-800); white-space: nowrap; animation: fadeUp 220ms var(--ease); max-width: calc(100% - 24px); } .ws-locked .text-btn { padding: 5px 11px; font-size: 12.5px; } .lock-dot { width: 8px; height: 8px; border-radius: 50%; background: #34c759; flex-shrink: 0; } .lock-dot.fail { background: #ff3b30; } /* Grading overlay */ .grading-overlay { position: absolute; inset: 0; z-index: 9; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,0.72); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); opacity: 0; pointer-events: none; transition: opacity var(--t-med); } .grading-overlay.active { opacity: 1; pointer-events: auto; } .grading-card { display: flex; flex-direction: column; gap: 12px; padding: 22px 24px; background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); border: 1px solid var(--grey-100); width: min(440px, 92%); } .grading-head { display: flex; align-items: center; gap: 14px; } .grading-head > div:nth-child(2) { flex: 1; min-width: 0; } .grading-card h3 { font-size: 16px; font-weight: 700; } .grading-card p { font-size: 13px; color: var(--grey-600); min-height: 18px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } /* A heads-up for waits that are long by nature (harder problems), so a two-minute spinner does not read as a hang. Wraps, unlike the one-line status above it. */ .grading-card p.grading-note { white-space: normal; font-size: 12.5px; line-height: 1.45; color: var(--grey-600); background: var(--grey-50); border-radius: 8px; padding: 8px 10px; min-height: 0; } .grading-timer { font-family: var(--mono); font-size: 12px; color: var(--grey-400); font-variant-numeric: tabular-nums; flex-shrink: 0; } .grading-spinner { width: 36px; height: 36px; flex-shrink: 0; animation: grading-rotate 2s linear infinite; } .grading-feed { display: flex; flex-direction: column; gap: 5px; max-height: 148px; overflow: hidden; border-top: 1px solid var(--grey-100); padding-top: 10px; } .grading-feed:empty { display: none; } .feed-item { display: flex; align-items: flex-start; gap: 8px; font-size: 12.5px; line-height: 1.4; color: var(--grey-600); animation: fadeUp 200ms var(--ease); } .feed-item .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--grey-300); margin-top: 6px; flex-shrink: 0; } .feed-item.live { color: var(--grey-800); font-weight: 500; } .feed-item.live .dot { background: var(--accent); animation: dotPulse 1.5s ease-in-out infinite; } .feed-item.code { color: var(--grey-600); } .feed-item.code .dot { background: #34c759; } /* Code-execution steps show a calculator instead of a dot. The code itself stays hidden; students only need to know the grader or tutor is checking the numbers. */ :root { --calc-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Crect x='3' y='1.75' width='10' height='12.5' rx='1.8' fill='none' stroke='black' stroke-width='1.5'/%3E%3Crect x='5.25' y='4' width='5.5' height='2.4' rx='.5'/%3E%3Ccircle cx='5.9' cy='9.1' r='.85'/%3E%3Ccircle cx='8' cy='9.1' r='.85'/%3E%3Ccircle cx='10.1' cy='9.1' r='.85'/%3E%3Ccircle cx='5.9' cy='11.6' r='.85'/%3E%3Ccircle cx='8' cy='11.6' r='.85'/%3E%3Ccircle cx='10.1' cy='11.6' r='.85'/%3E%3C/svg%3E"); } .feed-item.code .dot, .chat-activity .row.code .dot { width: 14px; height: 14px; border-radius: 0; -webkit-mask: var(--calc-icon) center / contain no-repeat; mask: var(--calc-icon) center / contain no-repeat; } .feed-item.code .dot { margin-top: 2px; background: var(--grey-400); } .feed-item.code.live .dot, .chat-activity .row.code .dot { background: #34c759; animation: calcPulse 1.2s ease-in-out infinite; } @keyframes calcPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.45; } } @keyframes dotPulse { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(0.6); opacity: 0.5; } } .feed-item code { font-size: 11px; background: var(--grey-50); padding: 1px 5px; border-radius: 4px; color: var(--grey-600); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; display: inline-block; vertical-align: middle; } .feed-item .ellipsis::after { content: "…"; animation: dots 1.4s steps(4) infinite; } @keyframes dots { 0% { content: ""; } 25% { content: "."; } 50% { content: ".."; } 75% { content: "..."; } } .grading-spinner circle { stroke: var(--accent); stroke-linecap: round; animation: grading-dash 1.5s ease-in-out infinite; } @keyframes grading-rotate { 100% { transform: rotate(360deg); } } @keyframes grading-dash { 0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; } 50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; } 100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; } } /* Action bar */ .ws-actionbar { flex-shrink: 0; display: flex; align-items: center; gap: 10px; padding: 10px 14px calc(10px + var(--safe-b)); background: rgba(255,255,255,0.88); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-top: 1px solid var(--grey-100); } .ws-actionbar .spacer { flex: 1; } .upload-chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 6px 4px 10px; border-radius: var(--radius-full); background: var(--blue-tint); border: 1px solid var(--blue-line); color: var(--accent); font-size: 12px; font-weight: 500; max-width: 220px; } .upload-chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } .chip-x { width: 20px; height: 20px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: var(--accent); font-size: 15px; line-height: 1; } .chip-x:hover { background: rgba(0,113,227,0.2); } /* ═══════════════════════════════════════════════════════════════════ Tutor chat ═══════════════════════════════════════════════════════════════════ */ /* Only one side of this conversation is in a bubble. The tutor writes explanations with equations in them, and boxing that in grey at 88% width is what makes a chat read like a support widget: the text is the content, so it gets the full column and no container. The student's own lines stay contained, quiet grey rather than a brand colour, which is enough to tell the two voices apart. */ .chat-messages { flex: 1; overflow-y: auto; padding: 18px 22px 20px; display: flex; flex-direction: column; gap: 18px; -webkit-overflow-scrolling: touch; } .chat-empty { margin: auto; text-align: center; color: var(--grey-400); font-size: 13px; max-width: 250px; line-height: 1.55; animation: fadeUp 240ms var(--ease); } .chat-empty .ce-title { font-size: 15px; font-weight: 600; color: var(--grey-800); margin-bottom: 6px; letter-spacing: -0.01em; } .msg { font-size: 14.5px; line-height: 1.62; word-wrap: break-word; animation: fadeUp 180ms var(--ease); } .msg.tutor { align-self: stretch; color: var(--grey-800); } .msg.student { align-self: flex-end; max-width: 85%; background: var(--grey-100); color: var(--grey-800); padding: 10px 16px; border-radius: 20px; } .msg.system { align-self: center; background: transparent; color: var(--grey-400); font-size: 12px; text-align: center; padding: 2px 8px; } .msg.error { align-self: stretch; background: var(--red-tint); border: 1px solid var(--red-line); color: var(--danger); padding: 10px 14px; border-radius: 14px; font-size: 13.5px; } /* A caret while the reply streams, instead of three bouncing dots. */ .msg.streaming::after { content: ""; display: inline-block; width: 7px; height: 14px; background: var(--grey-800); margin-left: 3px; vertical-align: -2px; animation: caret 1.1s steps(2, start) infinite; } @keyframes caret { 0%, 100% { opacity: 1; } 50% { opacity: 0; } } .msg-meta { align-self: flex-end; font-size: 11px; font-weight: 500; color: var(--grey-400); margin: -13px 6px 0; letter-spacing: -0.005em; animation: fadeUp 180ms var(--ease); } .msg .md p { margin-bottom: 8px; } .msg-thumb { display: block; max-width: 180px; max-height: 120px; border-radius: 12px; margin-bottom: 6px; } .msg-status { font-size: 11.5px; color: var(--grey-400); display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; } .chat-activity { align-self: stretch; display: flex; flex-direction: column; gap: 4px; padding: 0; font-size: 12.5px; color: var(--grey-400); animation: fadeUp 180ms var(--ease); } .chat-activity .row { display: flex; align-items: center; gap: 7px; } .chat-activity .row .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--grey-400); animation: dotPulse 1.5s ease-in-out infinite; flex-shrink: 0; } .chat-activity .row.done .dot { background: var(--grey-300); animation: none; } .chat-activity .t { font-family: var(--mono); font-size: 10.5px; color: var(--grey-400); margin-left: auto; padding-left: 8px; } .typing { display: inline-flex; gap: 4px; padding: 12px 16px; align-self: flex-start; background: var(--grey-50); border-radius: 18px; border-bottom-left-radius: 6px; } .typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--grey-400); animation: blink 1.2s infinite; } .typing span:nth-child(2) { animation-delay: 0.2s; } .typing span:nth-child(3) { animation-delay: 0.4s; } @keyframes blink { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 1; } } /* Starters are for a thread that has not started. Leaving them parked above the composer for the whole conversation is the canned-reply look we are getting away from. */ .chat-quick { display: flex; gap: 6px; padding: 2px 18px 10px; flex-wrap: wrap; flex-shrink: 0; } /* The composer is a field with its controls underneath, not a row of three widgets. */ .chat-composer { display: flex; align-items: flex-end; padding: 4px 12px calc(12px + var(--safe-b)); background: var(--white); flex-shrink: 0; } .composer-bar { flex: 1; display: flex; flex-direction: column; align-items: stretch; min-width: 0; padding: 8px 10px; border: 1px solid var(--grey-200); border-radius: 26px; background: var(--white); box-shadow: 0 1px 2px rgba(0,0,0,0.04); transition: border-color var(--t-fast), box-shadow var(--t-fast); } .composer-bar:focus-within { border-color: var(--grey-300); box-shadow: 0 2px 12px rgba(0,0,0,0.07); } .chat-composer textarea { width: 100%; min-width: 0; border: none; background: transparent; box-shadow: none; border-radius: 0; padding: 3px 8px 0; max-height: 150px; line-height: 1.5; font-size: 14.5px; resize: none; min-height: 26px; } .chat-composer textarea:focus { border: none; box-shadow: none; } .composer-row { display: flex; align-items: center; gap: 4px; margin-top: 4px; } .composer-row .spacer { flex: 1; } .icon-btn.attach { width: 32px; height: 32px; border-radius: 50%; } .icon-btn.attach svg { width: 17px; height: 17px; } .send-btn { position: relative; width: 32px; height: 32px; border-radius: 50%; background: var(--black); color: var(--white); display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; transition: background var(--t-fast), color var(--t-fast), opacity var(--t-fast); } .send-btn:hover { background: var(--grey-800); } .send-btn:disabled { background: var(--grey-100); color: var(--grey-300); } /* The mic holds the send button's slot while there is nothing to send. Idle it is a quiet ghost icon; listening it fills in and breathes, and the ring quickens while the student is actually producing words, so the button reads as hearing them rather than just on. */ .send-btn.mic { background: transparent; color: var(--grey-600); } .send-btn.mic:hover { background: var(--grey-100); color: var(--grey-800); } .send-btn.mic svg { width: 17px; height: 17px; } .send-btn.mic.listening, .send-btn.mic.listening:hover { background: var(--black); color: var(--white); } .send-btn.mic.listening::after { content: ""; position: absolute; inset: 0; border-radius: 50%; box-shadow: 0 0 0 0 rgba(0,0,0,0.30); animation: micPulse 1.8s var(--ease) infinite; } .send-btn.mic.listening.speaking::after { animation-duration: 0.85s; } @keyframes micPulse { from { box-shadow: 0 0 0 0 rgba(0,0,0,0.30); } to { box-shadow: 0 0 0 11px rgba(0,0,0,0); } } @media (prefers-reduced-motion: reduce) { .send-btn.mic.listening::after { animation: none; } } .send-btn svg { width: 18px; height: 18px; stroke-width: 2.2; } .chat-attach-chip { font-size: 12px; color: var(--accent); padding: 0 16px 10px; display: flex; align-items: center; gap: 8px; } /* Edge tabs */ .edge-tab { position: absolute; top: 50%; transform: translateY(-50%); z-index: 20; display: inline-flex; align-items: center; gap: 4px; padding: 10px 8px; background: var(--white); border: 1px solid var(--grey-200); box-shadow: var(--shadow-md); color: var(--grey-800); font-size: 11.5px; font-weight: 600; writing-mode: vertical-rl; text-orientation: mixed; letter-spacing: 0.03em; transition: background var(--t-fast); } .edge-tab.left { left: 0; border-left: none; border-radius: 0 10px 10px 0; } .edge-tab.right { right: 0; border-right: none; border-radius: 10px 0 0 10px; } .edge-tab:hover { background: var(--grey-50); } .edge-tab svg { width: 14px; height: 14px; } /* ═══════════════════════════════════════════════════════════════════ Drawer (questions) ═══════════════════════════════════════════════════════════════════ */ .drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.35); z-index: 500; opacity: 0; visibility: hidden; transition: opacity var(--t-med), visibility var(--t-med); } .drawer-overlay.active { opacity: 1; visibility: visible; } .drawer { position: fixed; top: 0; left: 0; bottom: 0; width: 340px; max-width: 88vw; background: var(--white); z-index: 501; box-shadow: var(--shadow-lg); transform: translateX(-100%); transition: transform var(--t-med); display: flex; flex-direction: column; } .drawer.open { transform: translateX(0); } .drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 10px 14px 20px; border-bottom: 1px solid var(--grey-100); } .drawer-head h2 { font-size: 17px; font-weight: 700; letter-spacing: -0.01em; } .drawer-exam { padding: 14px 20px 8px; display: flex; flex-direction: column; gap: 10px; } /* Custom exam picker. A native