/* ===================================================================== * DSA Patterns Handbook — Stylesheet * Theming via CSS custom properties. Light / Dark toggled on . * ===================================================================== */ :root { --bg: #ffffff; --bg-alt: #f6f8fa; --bg-elev: #ffffff; --sidebar-bg: #f0f3f7; --text: #1f2328; --text-soft: #5b6470; --text-faint: #8b95a1; --border: #d8dee4; --border-soft: #e7ebf0; --accent: #4f46e5; --accent-soft: #eef2ff; --accent-hover: #4338ca; --green: #1a7f37; --green-bg: #dafbe1; --amber: #9a6700; --amber-bg: #fff8c5; --red: #cf222e; --red-bg: #ffebe9; --code-bg: #f6f8fa; --code-text: #24292f; --shadow: 0 1px 3px rgba(27,31,36,.12), 0 1px 2px rgba(27,31,36,.06); --shadow-lg: 0 8px 24px rgba(27,31,36,.16); --radius: 10px; --radius-sm: 6px; --mono: "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace; --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; --sidebar-w: 300px; } html[data-theme="dark"] { --bg: #0d1117; --bg-alt: #161b22; --bg-elev: #161b22; --sidebar-bg: #0b0f14; --text: #e6edf3; --text-soft: #9da7b3; --text-faint: #6e7781; --border: #30363d; --border-soft: #21262d; --accent: #7c83ff; --accent-soft: #1b1f3a; --accent-hover: #9aa0ff; --green: #3fb950; --green-bg: #13241a; --amber: #d29922; --amber-bg: #2a2110; --red: #f85149; --red-bg: #2a1416; --code-bg: #161b22; --code-text: #e6edf3; --shadow: 0 1px 3px rgba(0,0,0,.4); --shadow-lg: 0 8px 24px rgba(0,0,0,.5); } * { box-sizing: border-box; } html { scroll-behavior: smooth; } body { margin: 0; font-family: var(--sans); background: var(--bg); color: var(--text); line-height: 1.6; font-size: 16px; transition: background .2s, color .2s; } a { color: var(--accent); text-decoration: none; } a:hover { text-decoration: underline; } /* ---------------- Top bar ---------------- */ .topbar { position: sticky; top: 0; z-index: 50; display: flex; align-items: center; gap: 16px; height: 60px; padding: 0 20px; background: var(--bg-elev); border-bottom: 1px solid var(--border); backdrop-filter: saturate(180%) blur(6px); } .topbar .brand { font-weight: 800; font-size: 18px; letter-spacing: -.3px; display: flex; align-items: center; gap: 9px; white-space: nowrap; } .topbar .brand .logo { width: 30px; height: 30px; border-radius: 8px; background: linear-gradient(135deg, var(--accent), #9333ea); display: grid; place-items: center; color: #fff; font-size: 15px; } /* Brand glyph rendered from the Zariya favicon image */ .topbar .brand .logo-img { width: 32px; height: 32px; border-radius: 8px; object-fit: contain; background: #fff; padding: 2px; display: block; box-shadow: var(--shadow); } .topbar .grow { flex: 1; } .menu-toggle { display: none; background: none; border: none; color: var(--text); font-size: 22px; cursor: pointer; } /* ---------------- Search box ---------------- */ .search-wrap { position: relative; max-width: 520px; width: 100%; } .search-wrap input { width: 100%; padding: 9px 14px 9px 38px; border: 1px solid var(--border); border-radius: 999px; background: var(--bg-alt); color: var(--text); font-size: 14px; outline: none; } .search-wrap input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); } .search-wrap .icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--text-faint); } .search-results { position: absolute; top: 46px; left: 0; right: 0; z-index: 60; background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-lg); max-height: 60vh; overflow-y: auto; display: none; } .search-results.open { display: block; } .search-results .sr-item { padding: 10px 14px; border-bottom: 1px solid var(--border-soft); cursor: pointer; display: block; color: var(--text); } .search-results .sr-item:last-child { border-bottom: none; } .search-results .sr-item:hover, .search-results .sr-item.active { background: var(--accent-soft); text-decoration: none; } .search-results .sr-item .sr-title { font-weight: 600; font-size: 14px; } .search-results .sr-item .sr-meta { font-size: 12px; color: var(--text-soft); margin-top: 2px; } .search-results .sr-empty { padding: 16px; color: var(--text-soft); text-align: center; } .search-results mark { background: var(--amber-bg); color: inherit; padding: 0 2px; border-radius: 3px; } /* ---------------- Theme switch ---------------- */ .theme-switch { display: flex; gap: 2px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 999px; padding: 3px; } .theme-switch button { background: none; border: none; cursor: pointer; padding: 5px 9px; border-radius: 999px; color: var(--text-soft); font-size: 13px; line-height: 1; display: grid; place-items: center; } .theme-switch button.active { background: var(--accent); color: #fff; } /* ---------------- Layout ---------------- */ .layout { display: flex; align-items: flex-start; } .sidebar { position: sticky; top: 60px; align-self: flex-start; width: var(--sidebar-w); flex-shrink: 0; height: calc(100vh - 60px); overflow-y: auto; background: var(--sidebar-bg); border-right: 1px solid var(--border); padding: 16px 10px 60px; } .sidebar h4 { margin: 4px 8px; font-size: 11px; text-transform: uppercase; letter-spacing: .8px; color: var(--text-faint); } .nav-group { margin-bottom: 4px; } .nav-group > .nav-group-head { display: flex; align-items: center; justify-content: space-between; padding: 8px 10px; cursor: pointer; border-radius: var(--radius-sm); font-weight: 700; font-size: 13px; user-select: none; } .nav-group > .nav-group-head:hover { background: var(--accent-soft); } .nav-group > .nav-group-head .caret { transition: transform .15s; color: var(--text-faint); font-size: 11px; } .nav-group.collapsed > .nav-group-head .caret { transform: rotate(-90deg); } .nav-group .nav-items { display: block; } .nav-group.collapsed .nav-items { display: none; } .nav-cat { margin: 6px 0 2px; padding: 3px 12px; font-size: 11px; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: .5px; } .nav-link { display: flex; align-items: center; gap: 8px; padding: 5px 12px 5px 14px; font-size: 13px; color: var(--text-soft); border-radius: var(--radius-sm); margin: 1px 2px; } .nav-link:hover { background: var(--accent-soft); color: var(--text); text-decoration: none; } .nav-link.active { background: var(--accent); color: #fff; font-weight: 600; } .nav-link .num { font-size: 11px; color: var(--text-faint); min-width: 22px; font-variant-numeric: tabular-nums; } .nav-link.active .num { color: #e0e0ff; } .nav-link .done { margin-left: auto; color: var(--green); font-size: 12px; } /* ---------------- Main content ---------------- */ .main { flex: 1; min-width: 0; max-width: 980px; margin: 0 auto; padding: 28px 32px 80px; } .content { min-width: 0; } /* ---------------- Homepage ---------------- */ .hero { background: linear-gradient(135deg, var(--accent-soft), transparent); border: 1px solid var(--border-soft); border-radius: 16px; padding: 36px 32px; margin-bottom: 28px; } .hero h1 { margin: 0 0 8px; font-size: 34px; letter-spacing: -1px; } .hero p { margin: 0; color: var(--text-soft); font-size: 16px; max-width: 700px; } .hero .stats { display: flex; gap: 28px; margin-top: 22px; flex-wrap: wrap; } .hero .stat { } .hero .stat .n { font-size: 26px; font-weight: 800; color: var(--accent); } .hero .stat .l { font-size: 12px; color: var(--text-soft); text-transform: uppercase; letter-spacing: .5px; } .section-title { font-size: 20px; margin: 34px 0 16px; display: flex; align-items: center; gap: 10px; } .section-title .bar { width: 4px; height: 22px; background: var(--accent); border-radius: 2px; } .card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; } .card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; transition: transform .12s, box-shadow .12s, border-color .12s; display: block; color: var(--text); } .card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); border-color: var(--accent); text-decoration: none; } .card .cat-icon { font-size: 22px; } .card h3 { margin: 8px 0 4px; font-size: 15px; } .card p { margin: 0; font-size: 12.5px; color: var(--text-soft); } .card .count { font-size: 12px; color: var(--accent); font-weight: 600; margin-top: 8px; } .dash { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 14px; } .dash .tile { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; text-align: center; } .dash .tile .big { font-size: 30px; font-weight: 800; color: var(--accent); } .dash .tile .lbl { font-size: 12px; color: var(--text-soft); text-transform: uppercase; letter-spacing: .5px; margin-top: 4px; } .progress-bar { height: 10px; background: var(--bg-alt); border-radius: 999px; overflow: hidden; margin: 14px 0 6px; border: 1px solid var(--border-soft); } .progress-bar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), #9333ea); border-radius: 999px; transition: width .4s; } .chips { display: flex; flex-wrap: wrap; gap: 8px; } .chip { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; font-size: 13px; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 999px; color: var(--text-soft); } .chip:hover { border-color: var(--accent); color: var(--text); text-decoration: none; } /* ---------------- Pattern page chrome ---------------- */ .pattern-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 8px; flex-wrap: wrap; } .breadcrumb { font-size: 13px; color: var(--text-soft); margin-bottom: 6px; } .badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; } .badge.lvl-Beginner { background: var(--green-bg); color: var(--green); } .badge.lvl-Intermediate { background: var(--amber-bg); color: var(--amber); } .badge.lvl-Advanced { background: var(--accent-soft); color: var(--accent); } .badge.lvl-Expert { background: var(--red-bg); color: var(--red); } .page-actions { display: flex; gap: 8px; flex-wrap: wrap; } .btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; font-size: 13px; cursor: pointer; background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-weight: 500; } .btn:hover { border-color: var(--accent); text-decoration: none; } .btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); } .btn.primary:hover { background: var(--accent-hover); } .btn.done { background: var(--green-bg); color: var(--green); border-color: var(--green); } .pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border); } .pager a { flex: 1; max-width: 48%; padding: 14px 18px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-elev); } .pager a:hover { border-color: var(--accent); text-decoration: none; } .pager .dir { font-size: 12px; color: var(--text-faint); } .pager .ttl { font-weight: 600; color: var(--text); } .pager a.next { text-align: right; } /* ---------------- Markdown rendered content ---------------- */ .md h1 { font-size: 30px; letter-spacing: -.6px; margin: 6px 0 18px; padding-bottom: 12px; border-bottom: 2px solid var(--border); } .md h2 { font-size: 23px; margin: 38px 0 14px; padding-top: 6px; scroll-margin-top: 76px; } .md h2::before { content: ""; display: block; } .md h3 { font-size: 18px; margin: 26px 0 10px; color: var(--text); scroll-margin-top: 76px; } .md h4 { font-size: 15px; margin: 20px 0 8px; color: var(--text-soft); text-transform: uppercase; letter-spacing: .5px; } .md p { margin: 12px 0; } .md ul, .md ol { margin: 12px 0; padding-left: 26px; } .md li { margin: 5px 0; } .md li > ul, .md li > ol { margin: 4px 0; } .md blockquote { margin: 16px 0; padding: 10px 18px; border-left: 4px solid var(--accent); background: var(--accent-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-soft); } .md hr { border: none; border-top: 1px solid var(--border); margin: 28px 0; } .md strong { font-weight: 700; color: var(--text); } .md a { font-weight: 500; } .md :not(pre) > code { font-family: var(--mono); font-size: 85%; background: var(--bg-alt); padding: 2px 6px; border-radius: 5px; border: 1px solid var(--border-soft); color: var(--code-text); } /* Tables */ .md table { border-collapse: collapse; margin: 16px 0; width: 100%; font-size: 14px; display: block; overflow-x: auto; } .md thead th { background: var(--bg-alt); } .md th, .md td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; } .md tbody tr:nth-child(even) { background: var(--bg-alt); } .md td:first-child { white-space: nowrap; } /* ---------------- Code blocks ---------------- */ .code-block { margin: 16px 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--code-bg); } .code-block .code-head { display: flex; align-items: center; justify-content: space-between; padding: 6px 12px; background: var(--bg-alt); border-bottom: 1px solid var(--border); font-size: 12px; } .code-block .code-lang { font-weight: 700; color: var(--text-soft); text-transform: uppercase; letter-spacing: .5px; font-size: 11px; } .code-block .copy-btn { background: none; border: 1px solid var(--border); color: var(--text-soft); cursor: pointer; font-size: 12px; padding: 3px 9px; border-radius: var(--radius-sm); } .code-block .copy-btn:hover { border-color: var(--accent); color: var(--accent); } .code-block .copy-btn.copied { color: var(--green); border-color: var(--green); } .code-block pre { margin: 0; padding: 14px 16px; overflow-x: auto; } .code-block code { font-family: var(--mono); font-size: 13px; line-height: 1.55; color: var(--code-text); white-space: pre; } /* Language tabs */ .code-tabs { margin: 18px 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; } .code-tabs .tab-head { display: flex; background: var(--bg-alt); border-bottom: 1px solid var(--border); flex-wrap: wrap; } .code-tabs .tab-btn { background: none; border: none; padding: 9px 16px; cursor: pointer; font-size: 13px; font-weight: 600; color: var(--text-soft); border-bottom: 2px solid transparent; } .code-tabs .tab-btn:hover { color: var(--text); } .code-tabs .tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); } .code-tabs .tab-panel { display: none; } .code-tabs .tab-panel.active { display: block; } .code-tabs .tab-panel .code-block { margin: 0; border: none; border-radius: 0; } /* Syntax highlight tokens */ .tok-kw { color: #cf222e; } html[data-theme="dark"] .tok-kw { color: #ff7b72; } .tok-str { color: #0a3069; } html[data-theme="dark"] .tok-str { color: #a5d6ff; } .tok-num { color: #0550ae; } html[data-theme="dark"] .tok-num { color: #79c0ff; } .tok-com { color: #6e7781; font-style: italic; } html[data-theme="dark"] .tok-com { color: #8b949e; } .tok-fn { color: #8250df; } html[data-theme="dark"] .tok-fn { color: #d2a8ff; } .tok-type{ color: #953800; } html[data-theme="dark"] .tok-type{ color: #ffa657; } /* Table of contents (in-page) */ .toc { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 18px; margin: 18px 0 24px; } .toc-title { font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .5px; color: var(--text-soft); margin-bottom: 8px; } .toc ol { columns: 2; column-gap: 28px; margin: 0; padding-left: 18px; font-size: 13.5px; } .toc a { color: var(--text-soft); } .toc a:hover { color: var(--accent); } /* Callouts produced from blockquote markers */ .callout { margin: 16px 0; padding: 12px 16px; border-radius: var(--radius-sm); border-left: 4px solid; } .callout.tip { background: var(--green-bg); border-color: var(--green); } .callout.warn { background: var(--amber-bg); border-color: var(--amber); } .callout.info { background: var(--accent-soft); border-color: var(--accent); } /* ---------------- Selector page ---------------- */ .selector { max-width: 820px; margin: 0 auto; } .q-card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 18px; box-shadow: var(--shadow); } .q-card h3 { margin: 0 0 16px; font-size: 18px; } .opt-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 10px; } .opt { padding: 14px; border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; background: var(--bg-alt); text-align: center; font-size: 14px; font-weight: 500; transition: all .12s; } .opt:hover { border-color: var(--accent); background: var(--accent-soft); } .opt.selected { border-color: var(--accent); background: var(--accent); color: #fff; } .result-box { background: var(--bg-elev); border: 2px solid var(--accent); border-radius: var(--radius); padding: 22px; margin-top: 10px; } .result-box .rec-name { font-size: 22px; font-weight: 800; color: var(--accent); } /* ---------------- Utility ---------------- */ .muted { color: var(--text-soft); } .center { text-align: center; } .spinner { width: 34px; height: 34px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; margin: 60px auto; } @keyframes spin { to { transform: rotate(360deg); } } .tag { display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 999px; background: var(--bg-alt); border: 1px solid var(--border); color: var(--text-soft); margin: 2px; } .back-to-top { position: fixed; bottom: 24px; right: 24px; width: 42px; height: 42px; border-radius: 50%; background: var(--accent); color: #fff; border: none; cursor: pointer; font-size: 18px; box-shadow: var(--shadow-lg); display: none; z-index: 40; } .back-to-top.show { display: block; } /* ---------------- Responsive ---------------- */ @media (max-width: 1000px) { .sidebar { position: fixed; left: 0; top: 60px; z-index: 45; transform: translateX(-100%); transition: transform .2s; box-shadow: var(--shadow-lg); } .sidebar.open { transform: translateX(0); } .menu-toggle { display: block; } .main { padding: 20px 16px 60px; } .toc ol { columns: 1; } .scrim { display: none; position: fixed; inset: 60px 0 0 0; background: rgba(0,0,0,.4); z-index: 44; } .scrim.show { display: block; } } @media (max-width: 620px) { .topbar .brand span.full { display: none; } .hero h1 { font-size: 26px; } .pager a { max-width: 100%; } } /* ============================================================ * Diagrams — raw SVG passthrough (```svg blocks). The card is * always light so fixed-palette diagrams read in both themes. * ============================================================ */ .content .diagram { margin: 20px 0; padding: 18px; background: #ffffff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow-x: auto; text-align: center; } .content .diagram-inner { min-width: min-content; } .content .diagram svg { max-width: 100%; height: auto; display: inline-block; } /* ============================================================ * Listen mode player (hb-listen.js) * ============================================================ */ .listen-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 4px 0 20px; padding: 10px 14px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 999px; } .listen-bar .listen-play { display: inline-flex; align-items: center; gap: 7px; } .listen-bar .listen-play .i { font-size: 12px; width: 1em; text-align: center; } .listen-bar .listen-play.is-playing { animation: listenPulse 1.6s ease-in-out infinite; } @keyframes listenPulse { 0%,100% { box-shadow: 0 0 0 0 var(--accent-soft); } 50% { box-shadow: 0 0 0 5px var(--accent-soft); } } .listen-bar .listen-stop { padding: 6px 12px; } .listen-prog { flex: 1 1 90px; min-width: 60px; height: 5px; background: var(--border); border-radius: 999px; overflow: hidden; } .listen-prog-fill { display: block; height: 100%; width: 0; background: var(--accent); transition: width .3s ease; } .listen-ctl { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; color: var(--text-soft); } .listen-ctl select { background: var(--bg-elev); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 4px 6px; font-size: 12.5px; max-width: 150px; } .content .listen-active { background: var(--amber-bg); box-shadow: -6px 0 0 0 var(--amber); border-radius: 3px; transition: background .2s ease; } @media (max-width: 640px) { .listen-bar { border-radius: var(--radius); } .listen-ctl select { max-width: 110px; } } /* "Watch" free-video button on topic pages */ .page-actions .btn.watch { border-color: #ff000033; } .page-actions .btn.watch:hover { border-color: #ff0000; color: #ff0000; } /* "Learn from video" per-chapter CTA (below the H1 on topic pages) */ .content .video-cta { display: inline-flex; align-items: center; gap: 8px; margin: 4px 0 18px; padding: 9px 15px; background: linear-gradient(135deg, #ff000010, transparent); border: 1px solid #ff000033; border-radius: 999px; color: var(--text); font-size: 13.5px; font-weight: 600; } .content .video-cta:hover { border-color: #ff0000; color: #ff0000; text-decoration: none; } /* Per-section "listen from here" play button (injected on H2/H3 in Listen mode) */ .content .listen-seg { margin-left: 8px; border: none; background: none; cursor: pointer; color: var(--text-faint); font-size: .6em; vertical-align: middle; opacity: .4; padding: 2px 6px; border-radius: 5px; line-height: 1; } .content .listen-seg:hover, .content .listen-seg.playing { opacity: 1; color: var(--accent); background: var(--accent-soft); } .listen-bar .listen-sel { padding: 6px 10px; }