/* ========================================================================== Networking from Scratch — Design System Retro Terminal meets Technical Manual ========================================================================== */ /* Fonts loaded via in HTML for performance */ /* ========================================================================== 1. Design Tokens — Light Mode (default) ========================================================================== */ :root { color-scheme: light; /* Colors */ --bg: #faf8f3; --bg-surface: #f0ede5; --bg-surface-hover: #e8e4da; --fg: #1a1a1a; --fg-soft: #4a4a4a; --muted: #7a7a78; --accent: #00897B; --accent-tint: rgba(0, 137, 123, 0.08); --accent-tint-strong: rgba(0, 137, 123, 0.18); --done: #27ae60; --inprogress: #e67e22; --upstream-tint: rgba(39, 174, 96, 0.12); --downstream-tint: rgba(230, 126, 34, 0.12); --planned: #999; --code-bg: #f0ede5; --line: #1a1a1a; --line-soft: #d4d0c8; --dot: rgba(0, 0, 0, 0.07); --shadow: #1a1a1a; --header-bg: rgba(250, 248, 243, 0.94); --lang-c: #2980b9; --lang-c-tint: rgba(41, 128, 185, 0.08); --lang-bpf: #8e44ad; --lang-bpf-tint: rgba(142, 68, 173, 0.08); --lang-lua: #d35400; --lang-lua-tint: rgba(211, 84, 0, 0.08); /* Typography */ --font-display: 'VT323', ui-monospace, monospace; --font-body: 'Source Serif 4', 'Iowan Old Style', Palatino, Georgia, serif; --font-mono: 'JetBrains Mono', ui-monospace, 'Consolas', monospace; } /* ========================================================================== 2. Design Tokens — Dark Mode ========================================================================== */ html.dark { color-scheme: dark; --bg: #0a0d1a; --bg-surface: #131830; --bg-surface-hover: #1a2040; --fg: #e8e6dc; --fg-soft: #b0b0a8; --muted: #7a7a78; --accent: #4DB6AC; --accent-tint: rgba(77, 182, 172, 0.08); --accent-tint-strong: rgba(77, 182, 172, 0.18); --done: #66bb6a; --inprogress: #ffa726; --upstream-tint: rgba(102, 187, 106, 0.12); --downstream-tint: rgba(255, 167, 38, 0.12); --planned: #666; --code-bg: #131830; --line: #2a2d3a; --line-soft: #1e2130; --dot: rgba(255, 255, 255, 0.04); --shadow: #000; --header-bg: rgba(10, 13, 26, 0.94); --lang-c: #5dade2; --lang-c-tint: rgba(93, 173, 226, 0.12); --lang-bpf: #bb8fce; --lang-bpf-tint: rgba(187, 143, 206, 0.12); --lang-lua: #f0b27a; --lang-lua-tint: rgba(240, 178, 122, 0.12); } /* Fallback for when JS hasn't loaded yet */ @media (prefers-color-scheme: dark) { :root:not(.light) { color-scheme: dark; --bg: #0a0d1a; --bg-surface: #131830; --bg-surface-hover: #1a2040; --fg: #e8e6dc; --fg-soft: #b0b0a8; --muted: #7a7a78; --accent: #4DB6AC; --accent-tint: rgba(77, 182, 172, 0.08); --accent-tint-strong: rgba(77, 182, 172, 0.18); --done: #66bb6a; --inprogress: #ffa726; --upstream-tint: rgba(102, 187, 106, 0.12); --downstream-tint: rgba(255, 167, 38, 0.12); --planned: #666; --code-bg: #131830; --line: #2a2d3a; --line-soft: #1e2130; --dot: rgba(255, 255, 255, 0.04); --shadow: #000; --header-bg: rgba(10, 13, 26, 0.94); --lang-c: #5dade2; --lang-c-tint: rgba(93, 173, 226, 0.12); --lang-bpf: #bb8fce; --lang-bpf-tint: rgba(187, 143, 206, 0.12); --lang-lua: #f0b27a; --lang-lua-tint: rgba(240, 178, 122, 0.12); } } /* ========================================================================== 3. Reset & Base ========================================================================== */ *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; } html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; } body { font-family: var(--font-body); font-size: 1rem; line-height: 1.6; color: var(--fg); background-color: var(--bg); background-image: radial-gradient(circle, var(--dot) 1px, transparent 1px); background-size: 16px 16px; background-attachment: fixed; min-height: 100vh; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } img, svg { display: block; max-width: 100%; height: auto; } a { color: var(--accent); text-decoration: none; transition: color 0.15s ease; } a:hover { text-decoration: underline; } button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; } ul, ol { list-style: none; } table { border-collapse: collapse; width: 100%; } /* ========================================================================== 4. Typography ========================================================================== */ h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 400; /* VT323 is single-weight */ line-height: 1.1; color: var(--fg); } h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); text-transform: uppercase; letter-spacing: 0.02em; line-height: 1; } h2 { font-size: 2rem; margin-top: 56px; margin-bottom: 16px; } h3 { font-size: 1.5rem; margin-top: 32px; margin-bottom: 12px; } h4 { font-size: 1.25rem; margin-top: 24px; margin-bottom: 8px; } p { margin-bottom: 1em; } strong { font-weight: 700; } em { font-style: italic; } small { font-size: 0.85rem; } /* ========================================================================== 5. Scroll Progress Bar ========================================================================== */ .scroll-progress { position: fixed; top: 56px; left: 0; height: 2px; background: var(--accent); z-index: 101; width: 0%; transition: width 0.1s linear; } /* ========================================================================== 6. Navigation (topnav) ========================================================================== */ .topnav { position: sticky; top: 0; z-index: 100; background: var(--header-bg); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line-soft); height: 56px; display: flex; align-items: center; justify-content: space-between; padding: 0 32px; gap: 16px; } .topnav-inner { max-width: 1200px; margin: 0 auto; padding: 0 32px; display: flex; align-items: center; justify-content: space-between; height: 100%; gap: 16px; } .topnav-brand { font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; color: var(--fg); text-decoration: none; white-space: nowrap; flex-shrink: 0; } .topnav-brand:hover { color: var(--accent); text-decoration: none; } .topnav-links { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; } .topnav-links a { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.06em; color: var(--fg-soft); text-decoration: none; padding: 4px 0; transition: color 0.15s ease; } .topnav-links a:hover { color: var(--fg); text-decoration: underline; } .topnav-links a.active { color: var(--fg); border-bottom: 2px solid var(--accent); } .topnav-badge { display: inline-flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 0.7rem; font-weight: 600; border: 1px solid var(--accent); color: var(--accent); padding: 1px 5px; margin-left: 4px; line-height: 1.2; } .topnav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; } /* GitHub star badge */ .gh-badge { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 0.72rem; color: var(--fg-soft); padding: 4px 10px; border: 1px solid var(--line-soft); text-decoration: none; transition: background 0.15s ease, color 0.15s ease; } .gh-badge:hover { background: var(--accent-tint); color: var(--accent); text-decoration: none; } /* Dark mode toggle */ .theme-toggle { font-family: var(--font-mono); font-size: 0.78rem; color: var(--fg-soft); padding: 4px 8px; border: 1px solid var(--line-soft); background: var(--bg-surface); cursor: pointer; transition: background 0.15s ease, color 0.15s ease; } .theme-toggle:hover { background: var(--accent-tint); color: var(--accent); } /* Mobile nav toggle */ .nav-toggle { display: none; font-family: var(--font-mono); font-size: 1.2rem; color: var(--fg); padding: 4px; } @media (max-width: 768px) { .topnav-inner { flex-wrap: wrap; height: auto; min-height: 56px; padding: 12px 16px; } .nav-toggle { display: block; } .topnav-links { display: none; width: 100%; flex-direction: column; align-items: flex-start; gap: 8px; padding: 8px 0; } .topnav-links.open { display: flex; } } /* ========================================================================== 7. Hero Section ========================================================================== */ .hero { padding: 80px 0 48px; } .hero-inner { max-width: 1200px; margin: 0 auto; padding: 0 32px; } .hero-title { font-family: var(--font-display); font-size: clamp(2.4rem, 6vw, 4.4rem); text-transform: uppercase; letter-spacing: 0.02em; line-height: 1; color: var(--fg); margin-bottom: 16px; } .hero-figure-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--muted); margin-bottom: 20px; letter-spacing: 0.04em; } .hero-tagline { font-family: var(--font-body); font-size: 1.1rem; color: var(--muted); max-width: 600px; line-height: 1.6; } @media (max-width: 480px) { .hero { padding: 48px 0 32px; } .hero-inner { padding: 0 16px; } } /* ========================================================================== 8. ASCII Rule Dividers ========================================================================== */ .ascii-rule { height: 6px; background-image: repeating-linear-gradient(to right, var(--accent) 0, var(--accent) 4px, transparent 4px, transparent 8px), repeating-linear-gradient(to right, transparent 0, transparent 8px, var(--accent-tint-strong) 8px, var(--accent-tint-strong) 14px); background-size: 100% 3px, 100% 3px; background-position: 0 0, 0 3px; background-repeat: no-repeat; margin: 48px 0; } .ascii-rule--tight { margin: 24px 0; } /* ========================================================================== 9. Stat Block ========================================================================== */ .stat-block { background: var(--bg-surface); border: 1px solid var(--line-soft); box-shadow: 3px 3px 0 var(--shadow); padding: 28px 32px; margin: 32px 0; } .stat-row { display: grid; grid-template-columns: 200px 1fr 100px; align-items: center; gap: 16px; padding: 10px 0; } .stat-row + .stat-row { border-top: 1px solid var(--line-soft); } .stat-label { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; } .stat-bar { height: 6px; background: var(--bg); max-width: 360px; width: 100%; position: relative; overflow: hidden; } .stat-bar-fill { height: 100%; background: var(--accent); width: 0%; transition: width 0.8s ease-out; } .stat-bar-fill.visible { /* width is set inline per stat */ } .stat-value { font-family: var(--font-display); font-size: 1.3rem; color: var(--fg); text-align: right; } @media (max-width: 768px) { .stat-row { grid-template-columns: 1fr; gap: 6px; } .stat-bar { max-width: 100%; } .stat-value { text-align: left; } } /* ========================================================================== 10. Phase Cards (Index page) ========================================================================== */ .phase-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 20px; margin: 32px 0; } .phase-card { background: var(--bg-surface); border: 1px solid var(--line-soft); box-shadow: 3px 3px 0 var(--shadow); padding: 24px; cursor: pointer; transition: transform 0.15s ease, box-shadow 0.15s ease; position: relative; overflow: hidden; } .phase-card:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--shadow); } .phase-card:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 var(--shadow); } .phase-card--bonus { border-style: dashed; } .phase-number { font-family: var(--font-display); font-size: 1.4rem; color: var(--accent); margin-bottom: 4px; } .phase-title { font-family: var(--font-display); font-size: 1.1rem; color: var(--fg); margin-bottom: 12px; line-height: 1.2; } .phase-meta { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); display: flex; align-items: center; gap: 12px; flex-wrap: wrap; } .status-dot { display: inline-block; width: 8px; height: 8px; /* square, not circle */ } .status-dot--done { background: var(--done); } .status-dot--inprogress { background: var(--inprogress); } .status-dot--planned { background: var(--planned); } /* Mini progress bar under card content */ .phase-progress { position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: var(--line-soft); } .phase-progress-fill { height: 100%; background: var(--accent); transition: width 0.3s ease; } @media (max-width: 480px) { .phase-grid { grid-template-columns: 1fr; } } /* ========================================================================== 11. Modal Overlay ========================================================================== */ .modal-overlay { position: fixed; inset: 0; z-index: 200; background: rgba(0, 0, 0, 0.5); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); display: none; align-items: center; justify-content: center; padding: 32px; } .modal-overlay.open { display: flex; } .modal-content { background: var(--bg); border: 1px solid var(--line-soft); box-shadow: 3px 3px 0 var(--shadow); max-width: 720px; width: 100%; max-height: 80vh; overflow-y: auto; position: relative; } .modal-header { display: flex; align-items: flex-start; justify-content: space-between; padding: 24px 28px 16px; border-bottom: 1px solid var(--line-soft); } .modal-phase-number { font-family: var(--font-display); font-size: 1.4rem; color: var(--accent); } .modal-title { font-family: var(--font-display); font-size: 1.6rem; color: var(--fg); margin-top: 4px; } .modal-close { font-family: var(--font-mono); font-size: 1.1rem; color: var(--muted); padding: 4px 8px; cursor: pointer; transition: color 0.15s ease; flex-shrink: 0; } .modal-close:hover { color: var(--fg); } /* Modal progress bar */ .modal-progress { width: 100%; height: 4px; background: var(--line-soft); } .modal-progress-fill { height: 100%; background: var(--accent); } /* Lesson list inside modal */ .modal-body { padding: 20px 28px 28px; } .lesson-list { display: flex; flex-direction: column; gap: 2px; } .lesson-row { display: grid; grid-template-columns: 24px 48px 1fr auto auto; align-items: center; gap: 12px; padding: 10px 8px; transition: background 0.15s ease; } .lesson-row:hover { background: var(--bg-surface); } .lesson-check { width: 16px; height: 16px; accent-color: var(--accent); } .lesson-num { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); } .lesson-title { font-family: var(--font-body); font-size: 0.95rem; color: var(--fg); } /* Type badges */ .badge { font-family: var(--font-mono); font-size: 0.68rem; font-weight: 500; padding: 2px 8px; letter-spacing: 0.02em; text-transform: uppercase; border: 1px solid; display: inline-block; line-height: 1.4; } .badge--theory { color: var(--fg-soft); border-color: var(--line-soft); background: var(--bg); } .badge--implement { color: var(--accent); border-color: var(--accent); background: var(--accent-tint); } .badge--capstone { color: var(--inprogress); border-color: var(--inprogress); background: rgba(230, 126, 34, 0.08); } /* Language badges */ .badge--c { color: var(--lang-c); border-color: var(--lang-c); background: var(--lang-c-tint); } .badge--py { color: var(--accent); border-color: var(--accent); background: var(--accent-tint); } .badge--bpf { color: var(--lang-bpf); border-color: var(--lang-bpf); background: var(--lang-bpf-tint); } .badge--lua { color: var(--lang-lua); border-color: var(--lang-lua); background: var(--lang-lua-tint); } @media (max-width: 768px) { .modal-overlay { padding: 0; } .modal-content { max-width: 100%; max-height: 100vh; height: 100vh; } .lesson-row { grid-template-columns: 24px 1fr; gap: 8px; } .lesson-num { display: none; } } /* ========================================================================== 12. Catalog Table ========================================================================== */ .catalog-controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 20px; } .catalog-controls input, .catalog-controls select { font-family: var(--font-mono); font-size: 0.8rem; background: var(--bg-surface); border: 1px solid var(--line-soft); color: var(--fg); padding: 6px 10px; transition: border-color 0.15s ease, box-shadow 0.15s ease; } .catalog-controls input:focus, .catalog-controls select:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 2px var(--accent-tint); } .catalog-search { min-width: 220px; flex: 1; max-width: 320px; } .catalog-clear { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); padding: 6px 12px; border: 1px solid var(--line-soft); background: var(--bg); cursor: pointer; transition: color 0.15s ease, border-color 0.15s ease; } .catalog-clear:hover { color: var(--accent); border-color: var(--accent); } .table-wrap { overflow-x: auto; margin: 20px 0; -webkit-overflow-scrolling: touch; } .catalog-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; } .catalog-table th { font-family: var(--font-mono); font-size: 0.75rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); text-align: left; padding: 10px 12px; border-bottom: 2px solid var(--line-soft); cursor: pointer; user-select: none; white-space: nowrap; transition: color 0.15s ease; } .catalog-table th:hover { color: var(--fg); } .catalog-table th.sorted { color: var(--accent); border-bottom-color: var(--accent); } .catalog-table th .sort-arrow { margin-left: 4px; font-size: 0.65rem; } .catalog-table td { padding: 10px 12px; border-bottom: 1px solid var(--line-soft); color: var(--fg); vertical-align: top; } .catalog-table tbody tr:hover { background: var(--bg-surface); } .catalog-table tbody tr:nth-child(even) { background: var(--accent-tint); } .catalog-table tbody tr:nth-child(even):hover { background: var(--bg-surface); } @media (max-width: 768px) { .catalog-controls { flex-direction: column; align-items: stretch; } .catalog-search { max-width: 100%; } } /* ========================================================================== 13. Roadmap SVG ========================================================================== */ .roadmap-container { overflow-x: auto; padding: 20px 0; } #graph text { font-family: var(--font-mono); } #graph .node rect { fill: var(--bg-surface); stroke: var(--line-soft); stroke-width: 1.5; transition: all 0.3s ease; cursor: pointer; } #graph .node:hover rect { stroke: var(--accent); stroke-width: 2; } #graph .node.selected rect { stroke: var(--accent); stroke-width: 2.5; fill: var(--accent-tint, rgba(0,137,123,0.08)); } #graph .node.upstream rect { fill: var(--upstream-tint); stroke: var(--done); } #graph .node.downstream rect { fill: var(--downstream-tint); stroke: var(--inprogress); } #graph .node.dimmed { opacity: 0.2; transition: opacity 0.3s ease; } #graph .node.bonus rect { stroke-dasharray: 5, 3; } #graph .node-id { font-size: 11px; fill: var(--accent); font-weight: 600; } #graph .node-title { font-size: 10px; fill: var(--fg); } #graph .node-count { font-size: 10px; fill: var(--muted); } #graph .edge { fill: none; stroke: var(--line-soft); stroke-width: 1.5; transition: all 0.3s ease; } #graph .edge.highlighted { stroke: var(--accent); stroke-width: 2.5; } #graph .edge.dimmed { opacity: 0.1; } #graph .edge-arrow { fill: var(--line-soft); transition: fill 0.3s ease; } #graph .edge-arrow.highlighted { fill: var(--accent); } /* Detail panel for selected node */ .roadmap-detail { background: var(--bg-surface); border: 1px solid var(--line-soft); box-shadow: 3px 3px 0 var(--shadow); padding: 24px; margin-top: 20px; } .roadmap-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; } .roadmap-detail h3 { font-family: var(--font-display); font-size: 1.3rem; margin-bottom: 12px; margin-top: 0; } .roadmap-detail-label { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 6px; } @media (max-width: 768px) { .roadmap-detail-grid { grid-template-columns: 1fr; } } /* ========================================================================== 14. Glossary Cards ========================================================================== */ .glossary-section { max-width: 800px; margin: 0 auto; } .glossary-category { font-family: var(--font-display); font-size: 1.4rem; color: var(--accent); margin-top: 48px; margin-bottom: 20px; padding-bottom: 8px; border-bottom: 1px solid var(--line-soft); } .glossary-list { display: flex; flex-direction: column; gap: 16px; } .term-card { background: var(--bg-surface); border: 1px solid var(--line-soft); box-shadow: 3px 3px 0 var(--shadow); padding: 20px; transition: transform 0.15s ease, box-shadow 0.15s ease; } .term-card:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--shadow); } .term-name { font-family: var(--font-mono); font-size: 1rem; font-weight: 600; color: var(--accent); margin-bottom: 4px; } .term-expansion { font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted); margin-bottom: 12px; } .term-label { font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 4px; margin-top: 12px; } .term-label:first-of-type { margin-top: 0; } .term-text { font-family: var(--font-body); font-size: 0.95rem; color: var(--fg); line-height: 1.6; } .term-ref { display: inline-block; margin-top: 12px; font-family: var(--font-mono); font-size: 0.85rem; color: var(--accent); } .term-ref:hover { text-decoration: underline; } /* ========================================================================== 15. Lesson Page ========================================================================== */ .lesson-layout { display: grid; grid-template-columns: 240px 1fr; max-width: 1200px; margin: 0 auto; min-height: calc(100vh - 56px); } /* Sidebar */ .lesson-sidebar { position: sticky; top: 56px; height: calc(100vh - 56px); overflow-y: auto; border-right: 1px solid var(--line-soft); padding: 16px 0; background: var(--bg); } .sidebar-item { display: flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 0.8rem; color: var(--fg-soft); padding: 8px 16px; text-decoration: none; transition: background 0.15s ease, color 0.15s ease; border-left: 3px solid transparent; } .sidebar-item:hover { background: var(--bg-surface); color: var(--fg); text-decoration: none; } .sidebar-item.active { background: var(--accent-tint); color: var(--accent); border-left-color: var(--accent); } .sidebar-dot { width: 6px; height: 6px; flex-shrink: 0; } .sidebar-dot--done { background: var(--done); } .sidebar-dot--current { background: var(--accent); } .sidebar-dot--todo { background: var(--line-soft); } /* Lesson main content */ .lesson-main { max-width: 720px; padding: 32px 48px 80px; } .lesson-breadcrumb { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); margin-bottom: 24px; } .lesson-breadcrumb a { color: var(--muted); } .lesson-breadcrumb a:hover { color: var(--accent); } .lesson-breadcrumb .separator { margin: 0 6px; } .lesson-content { font-family: var(--font-body); font-size: 1.06rem; line-height: 1.7; text-align: justify; hyphens: auto; -webkit-hyphens: auto; } .lesson-content h1 { font-family: var(--font-display); border-bottom: 2px solid var(--accent); padding-bottom: 16px; margin-bottom: 32px; } .lesson-content h2 { font-family: var(--font-display); margin-top: 56px; margin-bottom: 16px; } .lesson-content h3 { font-family: var(--font-display); margin-top: 32px; margin-bottom: 12px; } .lesson-content p { margin-bottom: 1.2em; } .lesson-content ul, .lesson-content ol { margin-bottom: 1.2em; padding-left: 1.5em; } .lesson-content ul { list-style: disc; } .lesson-content ol { list-style: decimal; } .lesson-content li { margin-bottom: 0.4em; line-height: 1.6; } /* Code blocks */ .lesson-content pre { background: var(--code-bg); border: 1px solid var(--line-soft); padding: 16px; overflow-x: auto; margin: 24px 0; font-family: var(--font-mono); font-size: 0.88rem; line-height: 1.5; position: relative; } .code-block-wrapper { position: relative; margin: 24px 0; } .code-block-header { display: flex; align-items: center; justify-content: space-between; background: var(--bg-surface); border: 1px solid var(--line-soft); border-bottom: none; padding: 6px 12px; } .code-block-lang { font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); } .code-copy-btn { font-family: var(--font-mono); font-size: 0.7rem; color: var(--muted); padding: 2px 8px; border: 1px solid transparent; background: none; cursor: pointer; transition: color 0.15s ease, border-color 0.15s ease; } .code-copy-btn:hover { color: var(--accent); border-color: var(--line-soft); } .code-block-wrapper pre { margin: 0; border-top: none; } /* Inline code */ .lesson-content code { font-family: var(--font-mono); font-size: 0.88em; background: var(--code-bg); border: 1px solid var(--line-soft); color: var(--accent); padding: 2px 6px; } .lesson-content pre code { background: none; border: none; color: var(--fg); padding: 0; font-size: 1em; } /* Blockquotes */ .lesson-content blockquote { border-left: 3px solid var(--accent); background: var(--accent-tint); padding: 16px 20px; margin: 24px 0; } .lesson-content blockquote p:last-child { margin-bottom: 0; } /* Tables in lessons */ .lesson-content .table-wrap { overflow-x: auto; margin: 24px 0; -webkit-overflow-scrolling: touch; } .lesson-content table { border-collapse: collapse; width: 100%; font-size: 0.92rem; } .lesson-content th { font-family: var(--font-mono); font-size: 0.78rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; background: var(--bg-surface); text-align: left; padding: 10px 12px; border: 1px solid var(--line-soft); } .lesson-content td { padding: 10px 12px; border: 1px solid var(--line-soft); } /* Prev/Next navigation */ .lesson-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--line-soft); gap: 16px; } .lesson-nav a { font-family: var(--font-mono); font-size: 0.85rem; color: var(--accent); text-decoration: none; display: flex; align-items: center; gap: 6px; } .lesson-nav a:hover { text-decoration: underline; } .lesson-nav .nav-prev::before { content: '\2190'; /* left arrow */ } .lesson-nav .nav-next::after { content: '\2192'; /* right arrow */ } /* Mark complete */ .lesson-complete { display: flex; align-items: center; gap: 10px; margin-top: 32px; padding: 16px; background: var(--bg-surface); border: 1px solid var(--line-soft); } .lesson-complete input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); } .lesson-complete label { font-family: var(--font-mono); font-size: 0.85rem; color: var(--fg-soft); } /* Loading skeleton */ .skeleton { background: var(--bg-surface); animation: skeleton-pulse 1.5s ease-in-out infinite; } .skeleton-line { height: 1em; margin-bottom: 0.8em; background: var(--bg-surface); animation: skeleton-pulse 1.5s ease-in-out infinite; } .skeleton-line--short { width: 60%; } .skeleton-line--medium { width: 80%; } @keyframes skeleton-pulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 0.8; } } /* Sidebar toggle for mobile */ .sidebar-toggle { display: none; font-family: var(--font-mono); font-size: 0.8rem; color: var(--fg-soft); padding: 8px 16px; border: 1px solid var(--line-soft); background: var(--bg-surface); cursor: pointer; margin-bottom: 16px; } @media (max-width: 1024px) { .lesson-layout { grid-template-columns: 1fr; } .lesson-sidebar { display: none; position: fixed; top: 56px; left: 0; width: 280px; height: calc(100vh - 56px); z-index: 90; border-right: 1px solid var(--line-soft); box-shadow: 3px 0 8px rgba(0, 0, 0, 0.1); } .lesson-sidebar.open { display: block; } .sidebar-toggle { display: inline-block; } .lesson-main { padding: 24px 24px 64px; max-width: 100%; } } @media (max-width: 480px) { .lesson-main { padding: 16px 16px 48px; } } /* ========================================================================== 16. Drop Caps ========================================================================== */ .dropcap::first-letter { font-family: var(--font-display); float: left; font-size: 4.2rem; line-height: 0.85; padding: 0.08em 0.12em 0 0; color: var(--accent); } /* ========================================================================== 17. Column Layouts ========================================================================== */ .columns-2 { column-count: 2; column-gap: 48px; column-rule: 1px solid var(--line-soft); } .columns-3 { column-count: 3; column-gap: 32px; column-rule: 1px solid var(--line-soft); } @media (max-width: 1024px) { .columns-3 { column-count: 2; } } @media (max-width: 768px) { .columns-2, .columns-3 { column-count: 1; } } /* ========================================================================== 18. Scroll Reveal Animations ========================================================================== */ .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; } .reveal.visible { opacity: 1; transform: translateY(0); } .reveal-delay-1 { transition-delay: 0.1s; } .reveal-delay-2 { transition-delay: 0.2s; } .reveal-delay-3 { transition-delay: 0.3s; } .reveal-delay-4 { transition-delay: 0.4s; } @media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } .reveal-delay-1, .reveal-delay-2, .reveal-delay-3, .reveal-delay-4 { transition-delay: 0s; } *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; } } /* ========================================================================== 19. Buttons ========================================================================== */ .btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; font-family: var(--font-mono); font-size: 0.8rem; padding: 8px 16px; cursor: pointer; transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease; text-decoration: none; border: none; line-height: 1.4; } .btn:hover { text-decoration: none; } .btn-primary { background: var(--accent); color: #fff; box-shadow: 2px 2px 0 var(--shadow); } .btn-primary:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--shadow); color: #fff; } .btn-primary:active { transform: translate(1px, 1px); box-shadow: none; } .btn-secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); box-shadow: 2px 2px 0 var(--shadow); } .btn-secondary:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--shadow); background: var(--accent-tint); color: var(--accent); } .btn-secondary:active { transform: translate(1px, 1px); box-shadow: none; } .btn-sm { font-size: 0.72rem; padding: 5px 10px; } .btn-lg { font-size: 0.88rem; padding: 12px 24px; } /* ========================================================================== 20. Forms ========================================================================== */ input:not([type="checkbox"]):not([type="radio"]), select, textarea { font-family: var(--font-mono); font-size: 0.8rem; background: var(--bg-surface); border: 1px solid var(--line-soft); color: var(--fg); padding: 6px 12px; transition: border-color 0.15s ease, box-shadow 0.15s ease; -webkit-appearance: none; appearance: none; } input[type="checkbox"] { -webkit-appearance: none; appearance: none; width: 16px; height: 16px; border: 2px solid var(--muted); background: transparent; cursor: pointer; flex-shrink: 0; position: relative; vertical-align: middle; } input[type="checkbox"]:checked { background: var(--accent); border-color: var(--accent); } input[type="checkbox"]:checked::after { content: '✓'; position: absolute; top: -2px; left: 1px; font-size: 13px; color: #fff; } input:focus, select:focus, textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 2px var(--accent-tint); } input::placeholder, textarea::placeholder { color: var(--muted); } select { cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%237a7a78'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; padding-right: 28px; } html.dark select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23b0b0a8'/%3E%3C/svg%3E"); } textarea { resize: vertical; min-height: 80px; } label { font-family: var(--font-mono); font-size: 0.78rem; color: var(--fg-soft); display: block; margin-bottom: 4px; } /* ========================================================================== 21. Generic Card ========================================================================== */ .card { background: var(--bg-surface); border: 1px solid var(--line-soft); box-shadow: 3px 3px 0 var(--shadow); padding: 24px; transition: transform 0.15s ease, box-shadow 0.15s ease; } .card:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--shadow); } .card--flat { box-shadow: none; } .card--flat:hover { transform: none; box-shadow: none; } /* ========================================================================== 22. Clone Box (for copyable terminal commands) ========================================================================== */ .clone-box { display: flex; align-items: center; background: var(--bg-surface); border: 1px solid var(--line-soft); box-shadow: 3px 3px 0 var(--shadow); padding: 12px 16px; gap: 12px; font-family: var(--font-mono); font-size: 0.85rem; color: var(--fg); margin: 16px 0; } .clone-box code { flex: 1; overflow-x: auto; white-space: nowrap; } .clone-box .copy-btn { flex-shrink: 0; font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); padding: 4px 10px; border: 1px solid var(--line-soft); background: var(--bg); cursor: pointer; transition: color 0.15s ease, border-color 0.15s ease; } .clone-box .copy-btn:hover { color: var(--accent); border-color: var(--accent); } /* ========================================================================== 23. Controls (filter bar, toolbar) ========================================================================== */ .controls { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; background: var(--bg-surface); border: 1px solid var(--line-soft); box-shadow: 3px 3px 0 var(--shadow); padding: 12px 16px; margin-bottom: 24px; } @media (max-width: 768px) { .controls { flex-direction: column; align-items: stretch; } } /* ========================================================================== 24. Footer ========================================================================== */ .footer { border-top: 1px solid var(--line); padding: 20px 32px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; } .footer-text { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); } .footer-links { display: flex; gap: 16px; } .footer-links a { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); text-decoration: none; } .footer-links a:hover { text-decoration: underline; color: var(--fg-soft); } @media (max-width: 480px) { .footer { padding: 16px; flex-direction: column; align-items: flex-start; } } /* ========================================================================== 25. Container & Layout Utilities ========================================================================== */ .container { max-width: 1200px; margin: 0 auto; padding: 0 32px; } .container--narrow { max-width: 800px; } .container--wide { max-width: 1400px; } .section { padding: 48px 0; } .section--lg { padding: 80px 0; } .flex { display: flex; } .flex-center { display: flex; align-items: center; justify-content: center; } .flex-between { display: flex; align-items: center; justify-content: space-between; } .gap-sm { gap: 8px; } .gap-md { gap: 16px; } .gap-lg { gap: 24px; } .gap-xl { gap: 32px; } @media (max-width: 768px) { .container { padding: 0 16px; } } /* ========================================================================== 26. Utility Classes ========================================================================== */ /* Font utilities */ .mono { font-family: var(--font-mono); } .serif { font-family: var(--font-body); } .pixel { font-family: var(--font-display); } /* Color utilities */ .text-accent { color: var(--accent); } .text-muted { color: var(--muted); } .text-soft { color: var(--fg-soft); } .text-done { color: var(--done); } .text-inprogress { color: var(--inprogress); } .text-planned { color: var(--planned); } .bg-surface { background: var(--bg-surface); } .bg-accent-tint { background: var(--accent-tint); } /* Spacing utilities */ .mt-0 { margin-top: 0; } .mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; } .mt-4 { margin-top: 32px; } .mt-5 { margin-top: 48px; } .mb-0 { margin-bottom: 0; } .mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; } .mb-4 { margin-bottom: 32px; } .mb-5 { margin-bottom: 48px; } /* Text utilities */ .text-center { text-align: center; } .text-right { text-align: right; } .uppercase { text-transform: uppercase; } .nowrap { white-space: nowrap; } /* Screen reader only */ .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0; } /* Visually hidden but focusable (skip links) */ .sr-only:focus { position: fixed; top: 0; left: 0; width: auto; height: auto; padding: 12px 16px; margin: 0; overflow: visible; clip: auto; white-space: normal; background: var(--accent); color: #fff; font-family: var(--font-mono); font-size: 0.85rem; z-index: 999; } /* ========================================================================== 27. Scrollbar Styling ========================================================================== */ ::-webkit-scrollbar { width: 8px; height: 8px; } ::-webkit-scrollbar-track { background: var(--bg); } ::-webkit-scrollbar-thumb { background: var(--line-soft); } ::-webkit-scrollbar-thumb:hover { background: var(--muted); } /* Firefox scrollbar */ * { scrollbar-width: thin; scrollbar-color: var(--line-soft) var(--bg); } /* ========================================================================== 28. Selection ========================================================================== */ ::selection { background: var(--accent-tint-strong); color: var(--fg); } ::-moz-selection { background: var(--accent-tint-strong); color: var(--fg); } /* ========================================================================== 29. Print Styles ========================================================================== */ @media print { body { background-image: none !important; background-color: #fff !important; color: #000 !important; } .topnav, .footer, .theme-toggle, .gh-badge, .nav-toggle, .sidebar-toggle, .lesson-sidebar, .scroll-progress, .modal-overlay, .btn, .controls { display: none !important; } .card, .phase-card, .term-card, .stat-block, .clone-box { box-shadow: none !important; border: 1px solid #ccc !important; } a { color: #000 !important; text-decoration: underline !important; } a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #555; } .lesson-layout { grid-template-columns: 1fr !important; } .reveal { opacity: 1 !important; transform: none !important; } pre { white-space: pre-wrap !important; word-break: break-all !important; } @page { margin: 2cm; } } /* ========================================================================== 30. Responsive — Tablet (768px - 1024px) ========================================================================== */ @media (max-width: 1024px) { h1 { font-size: clamp(2rem, 5vw, 3.2rem); } h2 { font-size: 1.7rem; margin-top: 40px; } .section { padding: 32px 0; } .section--lg { padding: 56px 0; } .ascii-rule { margin: 32px 0; } } /* ========================================================================== 31. Responsive — Mobile (< 768px) ========================================================================== */ @media (max-width: 768px) { h1 { font-size: clamp(1.8rem, 5vw, 2.8rem); } h2 { font-size: 1.5rem; margin-top: 32px; } h3 { font-size: 1.25rem; margin-top: 24px; } .hero { padding: 48px 0 32px; } .hero-tagline { font-size: 1rem; } .ascii-rule { margin: 24px 0; } .phase-grid { grid-template-columns: 1fr; gap: 16px; } .phase-card { padding: 20px; } .stat-block { padding: 20px; } .lesson-content { font-size: 1rem; text-align: left; hyphens: none; } .term-card { padding: 16px; } .modal-header { padding: 20px 20px 12px; } .modal-body { padding: 16px 20px 24px; } } /* ========================================================================== 32. Responsive — Small Mobile (< 480px) ========================================================================== */ @media (max-width: 480px) { body { font-size: 0.94rem; } h1 { font-size: 1.8rem; } h2 { font-size: 1.3rem; } h3 { font-size: 1.15rem; } .topnav-brand { font-size: 0.7rem; } .hero-title { font-size: 2rem; } .hero-figure-label { font-size: 0.65rem; } .phase-number { font-size: 1.2rem; } .btn { padding: 6px 12px; font-size: 0.75rem; } .btn-lg { font-size: 0.82rem; padding: 10px 18px; } .lesson-nav { flex-direction: column; align-items: flex-start; } .footer { padding: 12px; } } /* ========================================================================== 33. Focus Visible (Keyboard Navigation) ========================================================================== */ :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } /* Remove focus outline for mouse users */ :focus:not(:focus-visible) { outline: none; } /* ========================================================================== 34. HTML Class Aliases ========================================================================== */ .brand { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.12em; font-weight: 600; text-transform: uppercase; text-decoration: none; color: var(--fg); } .links { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; } .links a { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.06em; text-decoration: none; color: var(--fg); border-bottom: 1px solid transparent; padding-bottom: 2px; } .links a:hover { border-bottom-color: var(--fg); } .links a.active { border-bottom: 2px solid var(--accent); color: var(--accent); } .hero-meta { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); letter-spacing: 0.08em; margin-bottom: 16px; } .badge-pill { display: inline-block; font-family: var(--font-mono); font-size: 0.75rem; padding: 4px 12px; border: 1px solid var(--line-soft); color: var(--fg-soft); margin-right: 8px; margin-top: 16px; } .section-grid { display: grid; grid-template-columns: 200px 1fr; gap: 32px; } .section-label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; color: var(--muted); padding-top: 4px; } .section-body { min-width: 0; } @media (max-width: 768px) { .section-grid { grid-template-columns: 1fr; gap: 16px; } } .stat-fill { height: 100%; background: var(--accent); transition: width 0.8s ease; } .phase-card-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; } .phase-card-num { font-family: var(--font-display); font-size: 1.2rem; color: var(--accent); } .phase-card-title { font-family: var(--font-display); font-size: 1.1rem; color: var(--fg); margin-bottom: 8px; line-height: 1.2; } .phase-card-meta { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); margin-bottom: 8px; } .phase-card-bar { height: 3px; background: var(--bg); border: 1px solid var(--line-soft); } .phase-card-fill { height: 100%; background: var(--accent); transition: width 0.4s ease; } .modal-overlay { display: none; position: fixed; inset: 0; z-index: 200; background: rgba(0,0,0,0.5); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); align-items: center; justify-content: center; } .modal-overlay.open { display: flex; } .modal-content { background: var(--bg); max-width: 720px; width: 90%; max-height: 80vh; overflow-y: auto; padding: 32px; box-shadow: 5px 5px 0 var(--shadow); position: relative; } .modal-close { position: absolute; top: 12px; right: 16px; background: none; border: none; font-size: 1.6rem; cursor: pointer; color: var(--muted); font-family: var(--font-mono); } .modal-close:hover { color: var(--fg); } .modal-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; } .modal-phase-num { font-family: var(--font-display); font-size: 1.4rem; color: var(--accent); } .modal-title { font-family: var(--font-display); font-size: 1.6rem; margin: 0; } .modal-desc { color: var(--fg-soft); margin-bottom: 16px; font-size: 0.95rem; } .modal-progress { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; } .modal-progress-bar { flex: 1; height: 4px; background: var(--bg-surface); } .modal-progress-fill { height: 100%; background: var(--accent); } .modal-lessons { list-style: none; padding: 0; margin: 0; } .modal-lesson { display: grid; grid-template-columns: 24px 70px 1fr auto auto; gap: 8px; align-items: center; padding: 6px 0; border-bottom: 1px solid var(--line-soft); font-size: 0.88rem; } .modal-lesson.done { opacity: 0.6; } .modal-lesson input[type="checkbox"] { cursor: pointer; } .modal-lesson-num { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); } .modal-lesson-title { color: var(--fg); text-decoration: none; } .modal-lesson-title:hover { color: var(--accent); } .status-sq { display: inline-block; width: 8px; height: 8px; border: 1px solid var(--muted); } .status-sq.done { background: var(--done); border-color: var(--done); } .status-sq.inprogress { background: var(--inprogress); border-color: var(--inprogress); } .status-sq.planned { background: none; border-style: dashed; } .type-tag { font-family: var(--font-mono); font-size: 0.7rem; padding: 2px 6px; border: 1px solid; text-transform: uppercase; letter-spacing: 0.04em; } .type-tag.theory { color: var(--fg-soft); border-color: var(--line-soft); } .type-tag.implement { color: var(--accent); border-color: var(--accent); } .type-tag.capstone { color: var(--inprogress); border-color: var(--inprogress); } .lang-tag { font-family: var(--font-mono); font-size: 0.7rem; padding: 2px 6px; border: 1px solid; text-transform: uppercase; letter-spacing: 0.04em; } .lang-tag.c { color: var(--lang-c); border-color: var(--lang-c); } .lang-tag.py { color: var(--accent); border-color: var(--accent); } .lang-tag.bpf { color: var(--lang-bpf); border-color: var(--lang-bpf); } .lang-tag.lua { color: var(--lang-lua); border-color: var(--lang-lua); } .control-input { font-family: var(--font-mono); font-size: 0.8rem; padding: 6px 12px; background: var(--bg-surface); border: 1px solid var(--line-soft); color: var(--fg); border-radius: 0; } .control-input:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 2px var(--accent-tint); } select.control-input { -webkit-appearance: none; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%237a7a78'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; padding-right: 28px; } select.control-input option { background: var(--bg-surface); color: var(--fg); } .search-input { min-width: 200px; } .legend { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); } .legend-item { display: flex; align-items: center; gap: 6px; } .term-card { padding: 20px; margin-bottom: 16px; } .term-name { font-family: var(--font-mono); font-size: 1rem; color: var(--accent); font-weight: 600; margin-bottom: 4px; } .term-exp { font-family: var(--font-mono); font-size: 0.8rem; margin-bottom: 12px; } .term-row { display: flex; gap: 12px; margin-bottom: 8px; } .term-label { font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); min-width: 120px; flex-shrink: 0; padding-top: 2px; } .term-text { font-size: 0.92rem; line-height: 1.5; } @media (max-width: 640px) { .term-row { flex-direction: column; gap: 4px; } .term-label { min-width: auto; } } .glossary-nav { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; justify-content: center; } .glossary-nav a { font-size: 0.78rem; color: var(--accent); text-decoration: none; padding: 4px 8px; border: 1px solid var(--line-soft); } .glossary-nav a:hover { background: var(--accent-tint); } .glossary-content { max-width: 800px; margin: 0 auto; } .glossary-category h2 { font-family: var(--font-display); font-size: 1.4rem; color: var(--accent); margin: 32px 0 16px; padding-bottom: 8px; border-bottom: 1px solid var(--line-soft); } .breadcrumb { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); margin-bottom: 24px; } .breadcrumb a { color: var(--accent); text-decoration: none; } .breadcrumb a:hover { text-decoration: underline; } .lesson-article { font-family: var(--font-body); font-size: 1.06rem; line-height: 1.7; } .lesson-article h1 { font-family: var(--font-display); border-bottom: 2px solid var(--accent); padding-bottom: 16px; } .lesson-article h2 { font-family: var(--font-display); margin-top: 48px; } .lesson-article h3 { font-family: var(--font-display); } .lesson-article pre { background: var(--code-bg); border: 1px solid var(--line-soft); padding: 16px; overflow-x: auto; margin: 24px 0; position: relative; } .lesson-article code { font-family: var(--font-mono); font-size: 0.88em; } .lesson-article p code { background: var(--code-bg); border: 1px solid var(--line-soft); padding: 2px 6px; color: var(--accent); } .lesson-article blockquote { border-left: 3px solid var(--accent); background: var(--accent-tint); padding: 16px; margin: 24px 0; } .lesson-article table { border-collapse: collapse; width: 100%; margin: 24px 0; } .lesson-article th { background: var(--bg-surface); font-family: var(--font-mono); font-size: 0.8rem; text-align: left; padding: 8px 12px; border: 1px solid var(--line-soft); } .lesson-article td { padding: 8px 12px; border: 1px solid var(--line-soft); } .lesson-article img { max-width: 100%; } .code-lang { position: absolute; top: 4px; right: 8px; font-family: var(--font-mono); font-size: 0.65rem; color: var(--muted); text-transform: uppercase; } .sidebar-header { padding: 16px; border-bottom: 1px solid var(--line-soft); } .sidebar-header h3 { font-family: var(--font-display); font-size: 1rem; margin: 0; color: var(--accent); } .sidebar-lessons { padding: 8px 0; } .sidebar-item { display: flex; align-items: center; gap: 8px; padding: 6px 16px; text-decoration: none; color: var(--fg); font-size: 0.8rem; border-left: 2px solid transparent; } .sidebar-item:hover { background: var(--accent-tint); } .sidebar-item.active { background: var(--accent-tint); border-left-color: var(--accent); font-weight: 600; } .sidebar-item.done { opacity: 0.6; } .sidebar-dot { width: 6px; height: 6px; border: 1px solid var(--muted); flex-shrink: 0; } .sidebar-dot.done { background: var(--done); border-color: var(--done); } .sidebar-num { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); min-width: 20px; } .sidebar-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } .prev-next { display: flex; justify-content: space-between; gap: 16px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line-soft); } .pn-link { text-decoration: none; color: var(--fg); max-width: 45%; } .pn-link:hover { color: var(--accent); } .pn-link.next { text-align: right; margin-left: auto; } .pn-arrow { font-size: 1.2rem; color: var(--accent); } .pn-label { display: block; font-family: var(--font-mono); font-size: 0.7rem; color: var(--muted); text-transform: uppercase; margin-bottom: 4px; } .pn-title { display: block; font-size: 0.9rem; } .lesson-completion { margin-top: 32px; padding: 16px; background: var(--bg-surface); border: 1px solid var(--line-soft); } .complete-toggle { display: flex; align-items: center; gap: 10px; cursor: pointer; font-family: var(--font-mono); font-size: 0.85rem; } .complete-toggle input[type="checkbox"] { width: 18px; height: 18px; } .complete-toggle input[type="checkbox"]:checked::after { top: -1px; left: 2px; font-size: 14px; } .lesson-error { text-align: center; padding: 80px 24px; } .lesson-error h2 { font-family: var(--font-display); margin-bottom: 16px; } .lesson-error p { color: var(--fg-soft); margin-bottom: 12px; } .sk-line { height: 16px; background: var(--bg-surface); margin-bottom: 12px; animation: pulse 1.5s ease infinite; } .sk-w80 { width: 80%; } .sk-w60 { width: 60%; } .sk-w90 { width: 90%; } .sk-w70 { width: 70%; } .sk-w50 { width: 50%; } .sk-block { height: 120px; background: var(--bg-surface); margin-bottom: 16px; animation: pulse 1.5s ease infinite; } @keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } } .btn-small { font-size: 0.72rem; padding: 4px 10px; } .gh-link { display: inline-flex; align-items: center; gap: 4px; } .gh-stars { font-family: var(--font-mono); font-size: 0.72rem; background: var(--accent-tint); padding: 2px 6px; } footer { border-top: 1px solid var(--line-soft); padding: 20px 32px; font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; max-width: 1300px; margin: 0 auto; letter-spacing: 0.04em; } footer a { color: var(--muted); text-decoration: none; } footer a:hover { color: var(--accent); } .footer-links { display: flex; gap: 18px; } @media (max-width: 768px) { .modal-content { width: 100%; max-height: 100vh; height: 100%; } .modal-lesson { grid-template-columns: 24px 1fr; } .modal-lesson-num, .type-tag, .lang-tag { display: none; } .prev-next { flex-direction: column; } .pn-link { max-width: 100%; text-align: left; } .pn-link.next { text-align: left; } footer { padding: 16px; } } /* Section 35: Coming Soon + Button Variants */ .lesson-coming-soon { border: 1px dashed var(--line-soft); padding: 32px; margin-top: 24px; background: var(--bg-surface); } .lesson-error { text-align: center; padding: 60px 20px; } .lesson-error h2 { font-family: var(--font-display); color: var(--fg); } .lesson-error p { color: var(--muted); margin-top: 8px; } .lesson-error a { color: var(--accent); } .btn { display: inline-block; padding: 8px 16px; font-family: var(--font-mono); font-size: 0.85rem; text-decoration: none; cursor: pointer; border: 1px solid var(--accent); background: var(--accent); color: var(--bg); transition: opacity 0.15s; } .btn:hover { opacity: 0.85; } .btn-outline { background: transparent; color: var(--accent); } .btn-outline:hover { background: var(--accent); color: var(--bg); } /* Star CTA + Social Sharing */ .hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; } .btn-star { display: inline-flex; align-items: center; gap: 6px; background: var(--fg); color: var(--bg); border: 1px solid var(--fg); padding: 10px 18px; font-family: var(--font-mono); font-size: 0.85rem; text-decoration: none; cursor: pointer; transition: opacity 0.15s; } .btn-star:hover { opacity: 0.85; } .btn-star svg { width: 16px; height: 16px; fill: currentColor; } .share-bar { display: flex; gap: 8px; align-items: center; margin: 24px 0; padding: 12px 0; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); } .share-bar-label { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); letter-spacing: 0.06em; margin-right: 8px; } .share-btn { display: inline-flex; align-items: center; gap: 4px; padding: 4px 10px; font-family: var(--font-mono); font-size: 0.72rem; text-decoration: none; border: 1px solid var(--line-soft); color: var(--fg-soft); background: transparent; cursor: pointer; transition: border-color 0.15s, color 0.15s; } .share-btn:hover { border-color: var(--accent); color: var(--accent); } /* Mobile nav for HTML alias classes */ @media (max-width: 768px) { .topnav { flex-wrap: wrap; height: auto; min-height: 56px; padding: 12px 16px; } .links { width: 100%; gap: 12px; justify-content: flex-start; } .brand { font-size: 0.72rem; } } @media (max-width: 480px) { .links { gap: 8px; } .links a { font-size: 0.72rem; } }