/* * Quiz design system — flat, editorial, light + dark. No gradients. * One accent, hairline borders, system font, generous whitespace. * Shared by the landing (index.html) and the runner (take.html); all markup is * rendered by engine.js, so this is the single source of visual truth. * * Theme: light by default, dark via prefers-color-scheme, and a manual toggle * (data-theme on ) that overrides the system preference in both directions. * Status colors (correct/incorrect) are the dataviz-validated good/critical steps * and always ship with an icon + label, never color alone. */ :root { color-scheme: light dark; --page: #f7f7f5; --surface: #ffffff; --surface-2: #f2f2ef; --ink: #14151a; --muted: #55565c; --faint: #85868c; --line: #e4e4de; --line-strong: #d3d3cc; --accent: #2a78d6; --accent-hover: #1c5cab; --accent-soft: #eaf1fb; --on-accent: #ffffff; --good: #0ca30c; --good-ink: #006300; --good-soft: #e9f5e9; --bad: #d03b3b; --bad-ink: #b02a2a; --bad-soft: #fbecec; --radius: 12px; --radius-sm: 9px; --maxw: 720px; --ring: 0 0 0 3px rgba(42, 120, 214, 0.35); --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; } /* Dark tokens — applied when the user has explicitly chosen dark, OR when the * system prefers dark and no explicit light choice is set. The values are * duplicated in the attribute rule and the media query so the manual toggle wins * over the system preference in both directions. */ :root[data-theme="dark"] { --page: #0e0f11; --surface: #17181b; --surface-2: #202226; --ink: #f2f3f5; --muted: #b7b8bd; --faint: #85868c; --line: #2a2c31; --line-strong: #3a3d43; --accent: #3987e5; --accent-hover: #5598e7; --accent-soft: #16263a; --on-accent: #ffffff; --good: #1fb01f; --good-ink: #4fd24f; --good-soft: rgba(31, 176, 31, 0.15); --bad: #e05656; --bad-ink: #f08a8a; --bad-soft: rgba(224, 86, 86, 0.16); --ring: 0 0 0 3px rgba(57, 135, 229, 0.45); } @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --page: #0e0f11; --surface: #17181b; --surface-2: #202226; --ink: #f2f3f5; --muted: #b7b8bd; --faint: #85868c; --line: #2a2c31; --line-strong: #3a3d43; --accent: #3987e5; --accent-hover: #5598e7; --accent-soft: #16263a; --on-accent: #ffffff; --good: #1fb01f; --good-ink: #4fd24f; --good-soft: rgba(31, 176, 31, 0.15); --bad: #e05656; --bad-ink: #f08a8a; --bad-soft: rgba(224, 86, 86, 0.16); --ring: 0 0 0 3px rgba(57, 135, 229, 0.45); } } * { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; } body { margin: 0; font-family: var(--font); font-size: 16px; line-height: 1.6; color: var(--ink); background: var(--page); min-height: 100vh; display: flex; flex-direction: column; } a { color: var(--accent); text-underline-offset: 2px; } a:hover { color: var(--accent-hover); } :focus-visible { outline: none; box-shadow: var(--ring); border-radius: 6px; } h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; } code, .mono { font-family: var(--mono); font-size: 0.92em; } /* ---------- header / footer chrome ---------- */ .site-header { border-bottom: 1px solid var(--line); background: var(--surface); } .site-header .bar, .site-footer .bar { max-width: var(--maxw); margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; gap: 12px; } .brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; } .brand:hover { color: var(--ink); } .brand .mark { width: 26px; height: 26px; border-radius: 7px; background: var(--accent); color: var(--on-accent); display: grid; place-items: center; font-size: 15px; } .brand .sub { color: var(--faint); font-weight: 500; } .header-actions { margin-left: auto; display: flex; align-items: center; gap: 6px; } .icon-btn { font: inherit; cursor: pointer; width: 38px; height: 38px; border-radius: 9px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); display: grid; place-items: center; font-size: 17px; transition: background .15s, border-color .15s; } .icon-btn:hover { background: var(--surface-2); border-color: var(--line-strong); } .site-footer { margin-top: auto; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.86rem; } .site-footer .bar { flex-wrap: wrap; gap: 8px 18px; } .site-footer a { color: var(--muted); text-decoration: none; } .site-footer a:hover { color: var(--accent); text-decoration: underline; } .site-footer .spacer { flex: 1; } /* ---------- layout ---------- */ main { flex: 1; } .shell { max-width: var(--maxw); margin: 0 auto; padding: 34px 20px 56px; width: 100%; } .card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 26px 24px; } .eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.72rem; font-weight: 700; color: var(--faint); margin: 0 0 8px; } /* ---------- buttons ---------- */ .btn { font: inherit; font-weight: 600; cursor: pointer; border-radius: 10px; padding: 11px 18px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink); transition: background .15s, border-color .15s, color .15s, opacity .15s; display: inline-flex; align-items: center; gap: 8px; justify-content: center; } .btn:hover { background: var(--surface-2); } .btn-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); } .btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); } .btn-ghost { border-color: transparent; background: transparent; color: var(--muted); } .btn-ghost:hover { background: var(--surface-2); color: var(--ink); } .btn:disabled { opacity: .45; cursor: not-allowed; } .btn-lg { padding: 13px 24px; font-size: 1.02rem; } /* ---------- badges ---------- */ .badge { display: inline-flex; align-items: center; gap: 5px; font-size: 0.74rem; font-weight: 700; letter-spacing: 0.02em; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--muted); background: var(--surface-2); } .badge-dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; } .badge.easy { color: var(--good-ink); } .badge.medium { color: var(--accent); } .badge.hard { color: var(--bad-ink); } /* ---------- landing ---------- */ .landing-hero h1 { font-size: 1.9rem; margin: 4px 0 8px; } .landing-hero p { color: var(--muted); margin: 0 0 26px; max-width: 52ch; } .quiz-grid { display: grid; gap: 16px; } .quiz-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; display: flex; flex-direction: column; gap: 10px; transition: border-color .15s; } .quiz-card:hover { border-color: var(--line-strong); } .quiz-card .qc-top { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; } .quiz-card h2 { font-size: 1.16rem; margin: 0; flex: 1 1 auto; } .quiz-card .qc-summary { color: var(--muted); margin: 0; font-size: 0.95rem; } .quiz-card .qc-meta { display: flex; align-items: center; gap: 8px 14px; flex-wrap: wrap; color: var(--faint); font-size: 0.82rem; } .quiz-card .qc-foot { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 4px; } .quiz-card .qc-links { display: flex; gap: 14px; margin-left: auto; font-size: 0.86rem; } .qc-done { color: var(--good-ink); font-weight: 700; font-size: 0.82rem; display: inline-flex; gap: 5px; align-items: center; } .empty { text-align: center; color: var(--muted); padding: 48px 20px; border: 1px dashed var(--line-strong); border-radius: var(--radius); } /* ---------- runner: progress ---------- */ .progress { margin-bottom: 22px; } .progress-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; } .progress-text { font-size: 0.82rem; color: var(--muted); font-weight: 600; } .progress-dots { display: flex; gap: 6px; } .progress-dots .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--line-strong); } .progress-dots .dot.answered { background: var(--accent); border-color: var(--accent); } .progress-dots .dot.current { box-shadow: var(--ring); } .progress-track { height: 6px; background: var(--surface-2); border-radius: 999px; overflow: hidden; } .progress-track > span { display: block; height: 100%; background: var(--accent); border-radius: 999px; transition: width .25s ease; } /* ---------- runner: intro ---------- */ .intro h1 { font-size: 1.7rem; margin: 6px 0 10px; } .intro .summary { color: var(--muted); margin: 0 0 18px; } .intro .facts { display: flex; gap: 8px 14px; flex-wrap: wrap; color: var(--muted); font-size: 0.9rem; margin-bottom: 24px; } .intro .facts .item { display: inline-flex; align-items: center; gap: 6px; } .intro-actions { display: flex; gap: 10px; flex-wrap: wrap; } /* ---------- runner: question ---------- */ .q-prompt { font-size: 1.28rem; margin: 0 0 18px; } .options { display: grid; gap: 10px; } .option { display: flex; align-items: flex-start; gap: 12px; border: 1px solid var(--line-strong); border-radius: var(--radius-sm); padding: 13px 15px; cursor: pointer; background: var(--surface); transition: border-color .12s, background .12s; } .option:hover { border-color: var(--accent); } .option input { margin: 3px 0 0; accent-color: var(--accent); width: 17px; height: 17px; flex: none; } .option .opt-text { flex: 1; } .option:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); } .option:has(input:focus-visible) { box-shadow: var(--ring); } /* results-locked option states (radios disabled) */ .option.is-correct { border-color: var(--good); background: var(--good-soft); } .option.is-wrong { border-color: var(--bad); background: var(--bad-soft); } .option .tag { margin-left: auto; font-size: 0.74rem; font-weight: 700; display: inline-flex; align-items: center; gap: 4px; } .option.is-correct .tag { color: var(--good-ink); } .option.is-wrong .tag { color: var(--bad-ink); } /* ---------- hint ---------- */ .hint-row { margin-top: 16px; } .hint-toggle { font: inherit; font-weight: 600; font-size: 0.9rem; cursor: pointer; background: none; border: 0; color: var(--accent); padding: 4px 0; display: inline-flex; align-items: center; gap: 6px; } .hint-panel { margin-top: 10px; border: 1px solid var(--line); border-left: 3px solid var(--accent); background: var(--surface-2); border-radius: var(--radius-sm); padding: 12px 14px; font-size: 0.92rem; color: var(--muted); } .hint-panel .ref { display: block; margin-top: 8px; font-size: 0.86rem; } /* ---------- nav ---------- */ .nav { display: flex; align-items: center; gap: 10px; margin-top: 26px; } .nav .grow { flex: 1; } .nav-note { color: var(--faint); font-size: 0.82rem; margin-top: 12px; } /* ---------- review ---------- */ .review h1 { font-size: 1.5rem; margin: 0 0 6px; } .review .lead { color: var(--muted); margin: 0 0 20px; } .review-list { display: grid; gap: 10px; margin-bottom: 22px; } .review-row { display: flex; align-items: center; gap: 12px; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px; } .review-row .rr-num { color: var(--faint); font-weight: 700; font-size: 0.82rem; width: 1.6em; flex: none; } .review-row .rr-body { flex: 1; min-width: 0; } .review-row .rr-q { font-size: 0.92rem; } .review-row .rr-a { color: var(--muted); font-size: 0.86rem; margin-top: 2px; } .review-row .rr-a.missing { color: var(--bad-ink); font-weight: 600; } .review-row .edit { font-size: 0.86rem; font-weight: 600; background: none; border: 0; color: var(--accent); cursor: pointer; } /* ---------- results ---------- */ .result-score { text-align: center; margin-bottom: 20px; } .result-score .score-num { font-size: 2.6rem; font-weight: 800; letter-spacing: -0.02em; } .result-score .score-sub { color: var(--muted); margin-top: 2px; } .result-chart { display: flex; align-items: center; justify-content: center; gap: 26px; flex-wrap: wrap; margin: 8px 0 26px; } /* Donut colors live here (not baked into the SVG) so the theme toggle re-colors it live. */ .donut .donut-track { stroke: var(--surface-2); } .donut .donut-good { stroke: var(--good); } .donut .donut-bad { stroke: var(--bad); } .donut .donut-score { fill: var(--ink); font-family: var(--font); font-size: 26px; font-weight: 800; } .donut .donut-label { fill: var(--muted); font-family: var(--font); font-size: 12px; } .chart-legend { display: grid; gap: 8px; font-size: 0.9rem; } .chart-legend .row { display: flex; align-items: center; gap: 8px; } .chart-legend .swatch { width: 12px; height: 12px; border-radius: 3px; flex: none; } .qbar { display: flex; gap: 5px; flex-wrap: wrap; margin-top: 4px; } .qbar .cell { width: 22px; height: 22px; border-radius: 5px; display: grid; place-items: center; font-size: 12px; font-weight: 700; color: #fff; } .qbar .cell.ok { background: var(--good); } .qbar .cell.no { background: var(--bad); } .result-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin: 0 0 28px; } .result-actions .btn { font-size: 0.9rem; padding: 9px 15px; } .result-actions .ok-flash { color: var(--good-ink); border-color: var(--good); } .section-title { font-size: 1.16rem; margin: 30px 0 12px; } .answer-block { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 18px; margin-bottom: 12px; } .answer-block .ab-head { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 8px; } .answer-block .ab-num { color: var(--faint); font-weight: 700; font-size: 0.82rem; flex: none; line-height: 1.5; } .answer-block .ab-q { font-weight: 600; flex: 1; min-width: 0; } .answer-block .verdict { flex: none; white-space: nowrap; align-self: flex-start; font-size: 0.74rem; font-weight: 800; letter-spacing: 0.02em; padding: 3px 10px; border-radius: 999px; line-height: 1.4; } .answer-block .verdict.ok { color: var(--good-ink); background: var(--good-soft); } .answer-block .verdict.no { color: var(--bad-ink); background: var(--bad-soft); } .answer-block .line { font-size: 0.92rem; margin: 6px 0; } .answer-block .line .k { font-weight: 700; } .answer-block .line.wrong .k { color: var(--bad-ink); } .answer-block .line.right .k { color: var(--good-ink); } .answer-block .explain { color: var(--muted); font-size: 0.92rem; } .answer-block .ref { font-size: 0.86rem; margin-top: 8px; display: inline-block; } .continue { border-top: 1px solid var(--line); margin-top: 30px; padding-top: 24px; } .continue h2 { font-size: 1.16rem; margin: 0 0 6px; } .continue p { color: var(--muted); margin: 0 0 16px; } .continue-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; } .suggestions { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; } .suggest-card { display: flex; align-items: center; gap: 12px; min-width: 0; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 15px; text-decoration: none; color: var(--ink); transition: border-color .15s; } .suggest-card:hover { border-color: var(--accent); color: var(--ink); } .suggest-card .sc-body { flex: 1; min-width: 0; } .suggest-card .sc-title { font-weight: 600; } .suggest-card .sc-sum { color: var(--muted); font-size: 0.85rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } .suggest-card .sc-go { color: var(--accent); font-weight: 700; } .loading, .error-box { text-align: center; color: var(--muted); padding: 44px 20px; } .error-box { color: var(--bad-ink); } @media (max-width: 560px) { .card { padding: 20px 18px; } .landing-hero h1 { font-size: 1.6rem; } .q-prompt { font-size: 1.15rem; } .result-chart { gap: 18px; } } @media (prefers-reduced-motion: reduce) { * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; } }