/* course.css — shared stylesheet for the AI Engineering course. Tufte-inspired: serif body, generous margins, readable measure, calm palette. Every lesson and reference doc links this file so the course reads as one work. */ :root { --ink: #1a1a1a; --ink-soft: #4a4a4a; --ink-faint: #767676; --bg: #fdfcf9; --rule: #e3e0d8; --accent: #7a1f1f; /* deep oxblood — links, emphasis */ --accent-soft:#f3e9e9; --accent-bg: #f7efe9; --good: #1f6b3a; --bad: #9b2226; --code-bg: #f3f1ea; --tag-bg: #efe7dc; --card-bg: #ffffff; /* tables, quizzes, players, cards */ --soft-bg: #f6f4ee; /* asides, neutral quiz feedback */ --hover-bg: #faf8f2; --hover-rule: #cfc9bb; --good-bg: #eaf5ee; --bad-bg: #f7eaea; --video-tag-bg: #e9eef3; --video-tag-fg: #2b5876; --buffered: #e0dbd0; --link-rule: rgba(122,31,31,0.28); --shadow: rgba(0,0,0,0.07); --shadow-menu:rgba(0,0,0,0.12); --measure: 38rem; /* ~66 characters */ --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif; --sans: ui-sans-serif, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; --mono: "Cascadia Code", "SF Mono", Consolas, "Liberation Mono", monospace; } /* ---- Dark theme ---- Applied two ways so the switcher (assets/site.js) can pick System / Light / Dark: - system preference, unless the user explicitly chose light; - explicit choice via data-theme="dark" on . */ @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --ink: #e8e4da; --ink-soft: #b8b2a6; --ink-faint: #8a847a; --bg: #171512; --rule: #3a362e; --accent: #d98b7f; /* oxblood, brightened for dark-bg contrast */ --accent-soft:#3a2a27; --accent-bg: #2c221f; --good: #7fc99a; --bad: #e39a9d; --code-bg: #24211c; --tag-bg: #2e2a23; --card-bg: #211e1a; --soft-bg: #26231d; --hover-bg: #2a2620; --hover-rule: #4d4739; --good-bg: #1d2f24; --bad-bg: #362124; --video-tag-bg: #22303b; --video-tag-fg: #9fc3dc; --buffered: #3f3a31; --link-rule: rgba(217,139,127,0.35); --shadow: rgba(0,0,0,0.45); --shadow-menu:rgba(0,0,0,0.6); } } :root[data-theme="dark"] { --ink: #e8e4da; --ink-soft: #b8b2a6; --ink-faint: #8a847a; --bg: #171512; --rule: #3a362e; --accent: #d98b7f; --accent-soft:#3a2a27; --accent-bg: #2c221f; --good: #7fc99a; --bad: #e39a9d; --code-bg: #24211c; --tag-bg: #2e2a23; --card-bg: #211e1a; --soft-bg: #26231d; --hover-bg: #2a2620; --hover-rule: #4d4739; --good-bg: #1d2f24; --bad-bg: #362124; --video-tag-bg: #22303b; --video-tag-fg: #9fc3dc; --buffered: #3f3a31; --link-rule: rgba(217,139,127,0.35); --shadow: rgba(0,0,0,0.45); --shadow-menu:rgba(0,0,0,0.6); } * { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; } /* ---- Accessibility ---- */ .skip-link { position: absolute; left: -9999px; top: 0.5rem; z-index: 100; font-family: var(--sans); font-size: 0.9rem; background: var(--accent); color: #fff; border: none; border-radius: 8px; padding: 0.5em 1em; } .skip-link:focus { left: 0.5rem; } :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } .quiz-options li:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } @media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } html { scroll-behavior: auto !important; } } body { font-family: var(--serif); color: var(--ink); background: var(--bg); line-height: 1.55; font-size: 1.125rem; margin: 0; padding: 3.5rem 1.5rem 6rem; } .wrap { max-width: var(--measure); margin: 0 auto; } .wrap-wide { max-width: 52rem; margin: 0 auto; } /* ---- Masthead ---- */ .masthead { margin-bottom: 2.5rem; } .eyebrow { font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 0.6rem; } h1 { font-weight: 600; font-size: 2.1rem; line-height: 1.15; margin: 0 0 0.4rem; letter-spacing: -0.01em; } .subtitle { font-style: italic; color: var(--ink-soft); font-size: 1.15rem; margin: 0.2rem 0 0; } h2 { font-weight: 600; font-size: 1.4rem; margin: 2.6rem 0 0.8rem; padding-bottom: 0.3rem; border-bottom: 1px solid var(--rule); } h3 { font-weight: 600; font-size: 1.12rem; margin: 1.8rem 0 0.5rem; } p { margin: 0 0 1.1rem; } a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--link-rule); } a:hover { border-bottom-color: var(--accent); } strong { font-weight: 600; } em { font-style: italic; } ul, ol { padding-left: 1.4rem; margin: 0 0 1.1rem; } li { margin: 0.35rem 0; } code { font-family: var(--mono); font-size: 0.86em; background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; } pre { font-family: var(--mono); font-size: 0.82rem; line-height: 1.5; background: var(--code-bg); border: 1px solid var(--rule); border-radius: 8px; padding: 1rem 1.1rem; overflow-x: auto; } pre code { background: none; padding: 0; } kbd { font-family: var(--mono); font-size: 0.8em; background: var(--card-bg); border: 1px solid var(--rule); border-bottom-width: 2px; border-radius: 4px; padding: 0.05em 0.4em; } /* ---- Mission tag: ties a lesson to the FDE mission ---- */ .mission-tag { display: inline-block; font-family: var(--sans); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); background: var(--tag-bg); border-radius: 999px; padding: 0.28em 0.8em; margin-bottom: 1.2rem; } /* ---- Data tables ---- */ .table-wrap { overflow-x: auto; margin: 1.4rem 0; } table.data { border-collapse: collapse; width: 100%; font-family: var(--sans); font-size: 0.88rem; background: var(--card-bg); border: 1px solid var(--rule); border-radius: 10px; } table.data th { text-align: left; font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); padding: 0.6rem 0.9rem; border-bottom: 2px solid var(--rule); } table.data td { padding: 0.55rem 0.9rem; border-bottom: 1px solid var(--rule); } table.data tr:last-child td { border-bottom: none; } table.data td.num { font-family: var(--mono); font-size: 0.82rem; white-space: nowrap; } /* ---- Callouts ---- */ .callout { border-left: 3px solid var(--accent); background: var(--accent-bg); padding: 0.9rem 1.1rem; border-radius: 0 8px 8px 0; margin: 1.4rem 0; font-size: 0.98rem; } .callout .label { font-family: var(--sans); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); display: block; margin-bottom: 0.35rem; } .aside { font-family: var(--sans); font-size: 0.85rem; color: var(--ink-soft); background: var(--soft-bg); border-radius: 8px; padding: 0.8rem 1rem; margin: 1.4rem 0; } .aside .label { font-weight: 600; color: var(--ink); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.68rem; display:block; margin-bottom: 0.3rem; } /* Wide screens: asides become true margin notes in the right margin, book-style. (Below 68rem they stay inset boxes, which also suits mobile.) */ @media (min-width: 68rem) { .aside { float: right; clear: right; width: 14rem; margin: 0 -16.5rem 1rem 1rem; background: none; border-radius: 0; border-top: 1px solid var(--rule); padding: 0.55rem 0 0; font-size: 0.8rem; line-height: 1.45; } } /* ---- Theme switcher (injected by assets/site.js) ---- */ .theme-switch { position: fixed; top: 0.7rem; right: 0.8rem; z-index: 80; display: flex; gap: 0.15rem; font-family: var(--sans); background: var(--card-bg); border: 1px solid var(--rule); border-radius: 999px; padding: 0.18rem; box-shadow: 0 2px 10px var(--shadow); } .theme-switch button { cursor: pointer; border: none; background: none; color: var(--ink-faint); font-size: 0.78rem; line-height: 1; border-radius: 999px; padding: 0.35em 0.55em; } .theme-switch button:hover { color: var(--accent); background: var(--hover-bg); } .theme-switch button.selected { background: var(--accent); color: #fff; } /* ---- Recommended learning (end-of-lesson section) ---- */ .rec-learning { margin: 2rem 0; } .rec-learning ul { list-style: none; padding: 0; margin: 0; } .rec-learning li { display: flex; gap: 0.7rem; align-items: baseline; border-bottom: 1px solid var(--rule); padding: 0.65rem 0; } .rec-learning li:last-child { border-bottom: none; } .rec-tag { flex-shrink: 0; font-family: var(--sans); font-size: 0.62rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; border-radius: 999px; padding: 0.2em 0.7em; background: var(--tag-bg); color: var(--accent); } .rec-tag.video { background: var(--video-tag-bg); color: var(--video-tag-fg); } .rec-learning .rec-title { font-weight: 600; } .rec-learning .rec-why { font-family: var(--sans); font-size: 0.85rem; color: var(--ink-soft); display: block; margin-top: 0.15rem; } /* ---- Citations ---- */ sup.cite { font-family: var(--sans); font-size: 0.62rem; line-height: 0; } sup.cite a { border: none; font-weight: 600; } .refs { font-family: var(--sans); font-size: 0.82rem; color: var(--ink-soft); } .refs ol { padding-left: 1.2rem; } .refs li { margin: 0.3rem 0; } /* ---- Primary source card ---- */ .primary-source { border: 1px solid var(--rule); border-radius: 10px; padding: 1.1rem 1.2rem; margin: 1.6rem 0; background: var(--card-bg); } .primary-source .label { font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); display:block; margin-bottom: 0.4rem; } .primary-source .title { font-weight: 600; font-size: 1.05rem; } .primary-source .why { font-size: 0.92rem; color: var(--ink-soft); margin-top: 0.3rem; } /* ---- Quiz component (see assets/quiz.js) ---- */ .quiz { border: 1px solid var(--rule); border-radius: 10px; padding: 1.2rem 1.3rem; margin: 1.6rem 0; background: var(--card-bg); } .quiz-q { font-weight: 600; margin: 0 0 0.9rem; } .quiz-scenario { font-size: 0.92rem; color: var(--ink-soft); font-style: italic; margin: 0 0 0.7rem; } .quiz-options { list-style: none; padding: 0; margin: 0; } .quiz-options li { font-family: var(--sans); font-size: 0.95rem; border: 1px solid var(--rule); border-radius: 8px; padding: 0.6rem 0.85rem; margin: 0.5rem 0; cursor: pointer; transition: background 0.12s, border-color 0.12s; } .quiz-options li:hover { background: var(--hover-bg); border-color: var(--hover-rule); } .quiz-options li.correct { background: var(--good-bg); border-color: var(--good); color: var(--good); cursor: default; } .quiz-options li.incorrect { background: var(--bad-bg); border-color: var(--bad); color: var(--bad); } .quiz-options li.locked { cursor: default; } .quiz-feedback { font-family: var(--sans); font-size: 0.9rem; margin-top: 0.9rem; padding: 0.7rem 0.9rem; border-radius: 8px; background: var(--soft-bg); } .quiz-feedback.right { background: var(--good-bg); color: var(--good); } .quiz-feedback.wrong { background: var(--bad-bg); color: var(--bad); } /* ---- Navigation / footer ---- */ .lesson-nav { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; margin-top: 3rem; padding-top: 1.2rem; border-top: 1px solid var(--rule); font-family: var(--sans); font-size: 0.9rem; } .lesson-nav .muted { color: var(--ink-faint); } .lesson-nav.top { margin: 0 0 2rem; padding: 0 0 1rem; border-top: none; border-bottom: 1px solid var(--rule); font-size: 0.85rem; } .ask-teacher { font-family: var(--sans); font-size: 0.92rem; background: var(--accent-bg); border-radius: 10px; padding: 1rem 1.2rem; margin: 2.2rem 0 0; color: var(--ink-soft); } .ask-teacher strong { color: var(--accent); } /* ---- Progress (assets/progress.js; stored in localStorage) ---- */ .time-meta { font-family: var(--sans); font-size: 0.78rem; color: var(--ink-faint); margin: -0.6rem 0 1.2rem; } .complete-box { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.8rem; font-family: var(--sans); font-size: 0.9rem; color: var(--ink-soft); border: 1px dashed var(--rule); border-radius: 10px; padding: 0.9rem 1.1rem; margin: 2rem 0 0; } .complete-box.ready { border-style: solid; border-color: var(--good); } .complete-box.done { border-style: solid; background: var(--good-bg); color: var(--good); } .cb-btn { cursor: pointer; font-family: var(--sans); font-size: 0.82rem; font-weight: 600; color: #fff; background: var(--accent); border: none; border-radius: 999px; padding: 0.5em 1.2em; } .cb-btn:hover { filter: brightness(1.12); } .complete-box.done .cb-btn { background: none; color: var(--ink-faint); border: 1px solid var(--rule); font-weight: 400; } .fde-progress-card { font-family: var(--sans); border: 1px solid var(--rule); border-radius: 10px; background: var(--card-bg); padding: 1rem 1.2rem; margin: 1.6rem 0; } .pp-row { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; } .pp-label { font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); font-weight: 600; } .pp-stat { font-size: 0.85rem; color: var(--ink-soft); } .pp-track { height: 0.5rem; border-radius: 999px; background: var(--code-bg); margin: 0.6rem 0 0.8rem; overflow: hidden; } .pp-fill { height: 100%; border-radius: 999px; background: var(--accent); transition: width 0.3s; } .pp-actions { display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; } .pp-continue { font-size: 0.82rem; font-weight: 600; color: #fff !important; background: var(--accent); border: none !important; border-radius: 999px; padding: 0.45em 1.1em; } .pp-continue:hover { filter: brightness(1.12); } .pp-finished { font-size: 0.85rem; color: var(--good); font-weight: 600; } .pp-io { cursor: pointer; font-family: var(--sans); font-size: 0.76rem; color: var(--ink-faint); background: none; border: 1px solid var(--rule); border-radius: 999px; padding: 0.4em 0.9em; } .pp-io:hover { color: var(--accent); border-color: var(--accent); } .toc li.lesson-done { border-color: var(--good); } .toc li.lesson-done .t::after { content: ""; } .done-badge { display: inline-block; font-size: 0.62rem; font-weight: 700; color: var(--good); background: var(--good-bg); border-radius: 999px; padding: 0.15em 0.6em; letter-spacing: 0.05em; } .review-badge { display: inline-block; font-size: 0.62rem; font-weight: 600; color: var(--video-tag-fg); background: var(--video-tag-bg); border-radius: 999px; padding: 0.15em 0.6em; letter-spacing: 0.03em; } .quiz-retry { cursor: pointer; font-family: var(--sans); font-size: 0.78rem; font-weight: 600; color: var(--accent); background: none; border: 1px solid var(--accent); border-radius: 999px; padding: 0.3em 0.9em; margin-left: 0.6em; } .quiz-retry:hover { background: var(--accent-bg); } /* Artifact tracker page */ .artifact-list { list-style: none; padding: 0; margin: 0; font-family: var(--sans); } .artifact-list li { display: flex; gap: 0.8rem; align-items: flex-start; border-bottom: 1px solid var(--rule); padding: 0.75rem 0.2rem; } .artifact-list li:last-child { border-bottom: none; } .artifact-list input[type="checkbox"] { width: 1.15rem; height: 1.15rem; margin-top: 0.2rem; accent-color: var(--accent); cursor: pointer; flex-shrink: 0; } .artifact-list .a-name { font-weight: 600; font-size: 0.98rem; } .artifact-list .a-desc { font-size: 0.85rem; color: var(--ink-soft); display: block; margin-top: 0.15rem; } .artifact-list li.artifact-done .a-name { color: var(--good); } .artifact-list li.artifact-done .a-name::after { content: " ✓"; } #artifact-count { font-family: var(--sans); font-size: 0.85rem; font-weight: 600; color: var(--accent); } /* ---- Review prompt (copyable AI-review prompt after each lab) ---- */ .review-prompt { border: 1px solid var(--rule); border-left: 3px solid var(--accent); border-radius: 0 10px 10px 0; background: var(--card-bg); padding: 1rem 1.2rem; margin: 1.4rem 0 1.8rem; font-family: var(--sans); } .review-prompt .label { font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); font-weight: 600; display: block; margin-bottom: 0.4rem; } .review-prompt .rp-intro { font-size: 0.88rem; color: var(--ink-soft); margin: 0 0 0.7rem; } .review-prompt pre.rp-text { font-size: 0.78rem; white-space: pre-wrap; word-break: break-word; max-height: 14rem; overflow-y: auto; margin: 0 0 0.7rem; } .rp-copy { cursor: pointer; font-family: var(--sans); font-size: 0.8rem; font-weight: 600; color: #fff; background: var(--accent); border: none; border-radius: 999px; padding: 0.45em 1.1em; transition: filter 0.12s; } .rp-copy:hover { filter: brightness(1.12); } /* ---- Reference / glossary layout ---- */ .glossary-term { border-bottom: 1px solid var(--rule); padding: 0.9rem 0; } .glossary-term dt { font-weight: 600; font-size: 1.05rem; } .glossary-term .aka { font-style: italic; color: var(--ink-faint); font-size: 0.9rem; font-weight: 400; } .glossary-term dd { margin: 0.3rem 0 0; color: var(--ink-soft); font-size: 0.98rem; } /* ---- Audiobook player (MP3s generated via narration/generate.py) ---- Sticky: stays pinned below the top edge while the reader scrolls, so play/pause/scrub are always reachable during read-along. */ .audio-player { position: sticky; top: 0.6rem; z-index: 40; border: 1px solid var(--rule); border-radius: 10px; background: var(--card-bg); padding: 0.8rem 1rem; margin: 0 0 1.6rem; box-shadow: 0 3px 14px var(--shadow); } .audio-player .label { font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); display: block; margin-bottom: 0.45rem; } /* Native