/* ============================================================ System Design Illustrated — style.css v3.0 Dark-first editorial redesign. Inspired by the Gradient Descent interactive essay: black backgrounds, glow, Playfair Display. ============================================================ */ @import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@300;400;500&display=swap'); /* ── CSS variables (dark = default) ─────────────────────────── */ :root { /* Background layers */ --bg: #05030e; --surface: #130f26; --surface-2: #1b1638; --surface-3: #22194a; /* Brand */ --primary: #7C3AED; --primary-soft: #A78BFA; --primary-faint:rgba(124, 58, 237, 0.12); --secondary: #F59E0B; --accent: #10B981; --info: #06B6D4; /* Text */ --text: #EDE9FE; --text-soft: #9490B4; --text-muted:#5C577A; /* Borders / shadows */ --border: rgba(124, 58, 237, 0.32); --border-hi: rgba(167, 139, 250, 0.55); --shadow-sm: 0 2px 10px rgba(0,0,0,0.55); --shadow-md: 0 8px 28px rgba(0,0,0,0.65); --shadow-lg: 0 20px 56px rgba(124, 58, 237, 0.28); /* Typography */ --font-display: 'Playfair Display', Georgia, serif; --font-head: 'Playfair Display', Georgia, serif; --font-body: 'Inter', system-ui, sans-serif; --font-code: 'JetBrains Mono', 'Fira Code', monospace; /* Shape */ --radius: 8px; --radius-sm: 5px; --radius-lg: 14px; /* Motion */ --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1); /* Topic palette */ --t1: #7C3AED; --t2: #EC4899; --t3: #F59E0B; --t4: #10B981; --t5: #3B82F6; --t6: #EF4444; --t7: #8B5CF6; --t8: #F97316; --t9: #06B6D4; --t10:#22C55E; --t11: #EC4899; --t12: #6366F1; } /* ── Light theme override ──────────────────────────────────── */ [data-theme="light"] { --bg: #f5f3ff; --surface: #ffffff; --surface-2: #f0ecff; --surface-3: #e8e3fa; --border: rgba(124, 58, 237, 0.18); --border-hi: rgba(124, 58, 237, 0.4); --text: #1a1535; --text-soft: #4a4668; --text-muted:#8884a0; --shadow-sm: 0 2px 8px rgba(33,29,53,0.07); --shadow-md: 0 8px 24px rgba(33,29,53,0.11); --shadow-lg: 0 20px 48px rgba(124,58,237,0.16); --primary-faint: rgba(124,58,237,0.08); } /* ── Reset ──────────────────────────────────────────────────── */ *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; } /* Background lives on so z-index:-1 aurora/canvas paint between the html background and body content (step 2 vs step 3 in paint order) */ html { scroll-behavior: smooth; background: var(--bg); transition: background 0.4s ease; } body { font-family: var(--font-body); background: transparent; /* html provides the background */ color: var(--text); line-height: 1.72; -webkit-font-smoothing: antialiased; transition: color 0.4s ease; overflow-x: hidden; } h1,h2,h3,h4 { font-family: var(--font-head); line-height: 1.2; } a { color: var(--primary-soft); text-decoration: none; } img,svg { max-width: 100%; } table { border-collapse: collapse; width: 100%; } ::selection { background: var(--primary); color: #fff; } /* ── Reading progress bar ─────────────────────────────────── */ .reading-progress { position: fixed; top: 0; left: 0; height: 2px; width: 0%; background: linear-gradient(90deg, var(--primary), var(--secondary)); z-index: 1001; border-radius: 0 2px 2px 0; box-shadow: 0 0 14px var(--primary), 0 0 28px rgba(124,58,237,0.4); transition: width 80ms linear; } /* ── Navbar ───────────────────────────────────────────────── */ .navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: color-mix(in srgb, var(--surface) 70%, transparent); backdrop-filter: blur(18px) saturate(180%); -webkit-backdrop-filter: blur(18px) saturate(180%); border-bottom: 1px solid var(--border); } .nav-inner { max-width: 1180px; margin: 0 auto; padding: 0.8rem 1.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; } .logo { font-family: var(--font-head); font-weight: 700; font-size: 1.08rem; color: var(--text); display: flex; align-items: center; gap: 0.45rem; white-space: nowrap; } .logo .bolt { animation: glow 2.4s ease-in-out infinite; display: inline-block; } .nav-links { display: flex; align-items: center; gap: 1.4rem; } .nav-links a { color: var(--text-soft); font-weight: 500; font-size: 0.93rem; position: relative; transition: color var(--transition); font-family: var(--font-code); font-size: 0.82rem; letter-spacing: 0.04em; } .nav-links a:hover { color: var(--primary-soft); } .nav-links a::after { content: ''; position: absolute; left: 0; bottom: -3px; width: 0; height: 1px; background: var(--primary-soft); transition: width var(--transition); } .nav-links a:hover::after { width: 100%; } .theme-toggle { background: var(--surface-2); border: 1px solid var(--border); border-radius: 50%; width: 36px; height: 36px; cursor: pointer; display: grid; place-items: center; transition: transform var(--transition), box-shadow var(--transition); } .theme-toggle:hover { transform: rotate(22deg) scale(1.1); box-shadow: 0 0 14px var(--primary); } .icon-sun, .icon-moon { color: var(--text-soft); } /* ── Hero ─────────────────────────────────────────────────── */ .hero { position: relative; min-height: 100vh; overflow: hidden; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 0; background: radial-gradient(ellipse 800px 500px at 20% 50%, rgba(124,58,237,0.18) 0%, transparent 65%), var(--bg); padding-top: 5rem; /* space for fixed navbar */ } .hero-svg { display: none; } /* Left text column */ .hero-inner { position: relative; z-index: 2; padding: 4rem 2rem 4rem clamp(1.5rem, 5vw, 5rem); text-align: left; max-width: none; margin: 0; } /* Right 3D panel — canvas lives here */ .hero-3d-panel { position: relative; height: 100%; min-height: 100vh; overflow: hidden; z-index: 1; } .system-3d { position: absolute !important; inset: 0 !important; width: 100% !important; height: 100% !important; pointer-events: auto !important; -webkit-mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.7) 14%, black 30%); mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.7) 14%, black 30%); } /* Orbs stay as decorative bg in left column */ .hero-orb, .hero-grid { z-index: 0; } /* Mobile: single column */ @media (max-width: 900px) { .hero { grid-template-columns: 1fr; padding-top: 5rem; background: radial-gradient(ellipse 600px 400px at 50% 20%, rgba(124,58,237,0.18) 0%, transparent 65%), var(--bg); } .hero-inner { padding: 3rem 1.5rem 2rem; text-align: center; } .hero h1 { font-size: clamp(2rem, 9vw, 3.2rem); } .hero-ctas { justify-content: center; } .hero-stats { justify-content: center; } .hero-3d-panel { height: 55vw; min-height: 280px; max-height: 420px; } .system-3d { -webkit-mask-image: linear-gradient(to bottom, black 50%, transparent 100%); mask-image: linear-gradient(to bottom, black 50%, transparent 100%); opacity: 0.7; } } .hero-badge { display: inline-flex; align-items: center; gap: 0.4rem; background: rgba(124,58,237,0.14); border: 1px solid rgba(124,58,237,0.35); border-radius: 999px; padding: 0.32rem 1rem; font-family: var(--font-code); font-size: 0.76rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--primary-soft); animation: fadeUp 0.7s both; } [data-theme="light"] .hero-badge { background: rgba(124,58,237,0.08) !important; border-color: rgba(124,58,237,0.25) !important; color: var(--primary) !important; } .hero h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); font-weight: 700; letter-spacing: -0.025em; margin: 1.1rem 0 1rem; color: #fff; line-height: 1.08; animation: fadeUp 0.7s 0.1s both; } [data-theme="light"] .hero h1 { color: var(--text); } .hero h1 .grad { background: linear-gradient(110deg, var(--primary-soft), var(--secondary) 60%, var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; } .hero p.lead { font-size: 1.13rem; color: rgba(237,233,254,0.7); max-width: 580px; margin: 0 auto 2.4rem; animation: fadeUp 0.7s 0.2s both; line-height: 1.7; } [data-theme="light"] .hero p.lead { color: var(--text-soft); } .hero-ctas { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; animation: fadeUp 0.7s 0.3s both; } .btn { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-code); font-weight: 500; font-size: 0.88rem; letter-spacing: 0.04em; padding: 0.82rem 1.6rem; border-radius: 5px; border: none; cursor: pointer; transition: transform var(--transition), box-shadow var(--transition), background var(--transition); } .btn-primary { background: var(--primary); color: #fff; box-shadow: 0 0 0 1px rgba(124,58,237,0.4), 0 8px 24px rgba(124,58,237,0.35); } .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 0 0 1px rgba(167,139,250,0.6), 0 14px 32px rgba(124,58,237,0.5); background: #8B46FF; } .btn-ghost { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); } .btn-ghost:hover { transform: translateY(-3px); border-color: var(--primary-soft); box-shadow: 0 0 14px rgba(124,58,237,0.2); } .hero-stats { display: flex; gap: 3rem; justify-content: center; flex-wrap: wrap; margin-top: 3.4rem; animation: fadeUp 0.7s 0.45s both; } .stat { text-align: center; } .stat .num { font-family: var(--font-head); font-size: 2rem; font-weight: 700; background: linear-gradient(120deg, var(--primary-soft), var(--secondary)); -webkit-background-clip: text; background-clip: text; color: transparent; display: block; } .stat .lbl { font-family: var(--font-code); font-size: 0.76rem; color: var(--text-muted); letter-spacing: 0.2em; text-transform: uppercase; } /* Hero scroll cue */ .hero-scroll-cue { position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; z-index: 3; pointer-events: none; } .hero-scroll-cue .sc-text { font-family: var(--font-code); font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase; color: rgba(167,139,250,0.45); } .hero-scroll-cue .sc-line { width: 1px; height: 44px; background: linear-gradient(180deg, rgba(167,139,250,0.9), transparent); animation: scrollPulse 2.2s ease-in-out infinite; transform-origin: top center; } /* ── Sections ─────────────────────────────────────────────── */ .section { max-width: 1180px; margin: 0 auto; padding: 5rem 1.5rem; } .section-title { text-align: center; font-size: clamp(1.9rem, 3.5vw, 2.8rem); font-weight: 700; margin-bottom: 0.6rem; position: relative; display: inline-block; } /* Centered glowing underline on section titles */ .section > .section-title::after, #topics > .section-title::after { content: ''; display: block; width: 48px; height: 2px; margin: 0.55rem auto 0; background: linear-gradient(90deg, var(--primary), var(--secondary)); border-radius: 2px; box-shadow: 0 0 10px var(--primary); } .section-sub { text-align: center; color: var(--text-soft); max-width: 540px; margin: 0 auto 3.2rem; font-size: 1.02rem; } /* ── Topic cards grid ─────────────────────────────────────── */ .topics-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 1.4rem; } .topic-card { position: relative; display: block; background: linear-gradient(145deg, var(--surface) 0%, color-mix(in srgb, var(--card-color, var(--primary)) 5%, var(--surface)) 100%); border: 1px solid rgba(124, 58, 237, 0.32); border-radius: var(--radius); padding: 1.65rem 1.6rem 1.5rem; color: var(--text); overflow: hidden; box-shadow: 0 4px 16px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.04); transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); --card-color: var(--primary); } .topic-card::before { content: ''; position: absolute; top: 0; left: 0; height: 3px; width: 0; background: var(--card-color, var(--primary)); transition: width 0.5s cubic-bezier(0.22,1,0.36,1); } .topic-card:hover { transform: translateY(-8px); border-color: color-mix(in srgb, var(--card-color,var(--primary)) 40%, transparent); box-shadow: 0 0 0 1px color-mix(in srgb, var(--card-color,var(--primary)) 40%, transparent), 0 20px 50px color-mix(in srgb, var(--card-color,var(--primary)) 22%, transparent), 0 8px 20px rgba(0,0,0,0.35); } .topic-card:hover::before { width: 100%; } .tc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; } .tc-num { font-family: var(--font-code); font-size: 0.76rem; color: var(--card-color, var(--primary)); background: color-mix(in srgb, var(--card-color, var(--primary)) 14%, transparent); padding: 0.18rem 0.6rem; border-radius: 999px; border: 1px solid color-mix(in srgb, var(--card-color, var(--primary)) 30%, transparent); letter-spacing: 0.08em; } .tc-icon { font-size: 1.7rem; transition: transform var(--transition), filter var(--transition); color: var(--card-color, var(--primary)); filter: drop-shadow(0 0 6px color-mix(in srgb, var(--card-color, var(--primary)) 60%, transparent)); width: 2.2rem; height: 2.2rem; } .topic-card:hover .tc-icon { transform: scale(1.2) rotate(-6deg); filter: drop-shadow(0 0 10px var(--card-color, var(--primary))); } .topic-card h3 { font-size: 1.12rem; font-weight: 600; margin-bottom: 0.5rem; line-height: 1.3; } .topic-card p { font-size: 0.88rem; color: var(--text-soft); margin-bottom: 1rem; line-height: 1.6; } .tc-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; } .tag { font-size: 0.72rem; font-weight: 500; padding: 0.2rem 0.65rem; border-radius: 999px; background: var(--surface-2); color: var(--text-soft); border: 1px solid var(--border); font-family: var(--font-code); letter-spacing: 0.05em; } .tag.difficulty { color: var(--card-color, var(--primary)); border-color: transparent; background: color-mix(in srgb, var(--card-color, var(--primary)) 14%, transparent); } .done-badge { position: absolute; top: 0.9rem; right: 0.9rem; width: 24px; height: 24px; border-radius: 50%; background: var(--accent); color: #fff; display: grid; place-items: center; font-size: 0.78rem; font-weight: 700; box-shadow: 0 0 10px rgba(16,185,129,0.5); animation: popIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both; } /* Staggered reveals for topic grid */ .topics-grid .reveal:nth-child(1) { transition-delay: 0.03s; } .topics-grid .reveal:nth-child(2) { transition-delay: 0.07s; } .topics-grid .reveal:nth-child(3) { transition-delay: 0.11s; } .topics-grid .reveal:nth-child(4) { transition-delay: 0.15s; } .topics-grid .reveal:nth-child(5) { transition-delay: 0.19s; } .topics-grid .reveal:nth-child(6) { transition-delay: 0.23s; } .topics-grid .reveal:nth-child(7) { transition-delay: 0.27s; } .topics-grid .reveal:nth-child(8) { transition-delay: 0.31s; } .topics-grid .reveal:nth-child(9) { transition-delay: 0.35s; } .topics-grid .reveal:nth-child(10) { transition-delay: 0.39s; } .topics-grid .reveal:nth-child(11) { transition-delay: 0.43s; } .topics-grid .reveal:nth-child(12) { transition-delay: 0.47s; } /* ── About / Archie section ───────────────────────────────── */ .about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem; align-items: center; } .why-list { list-style: none; display: grid; gap: 0.9rem; margin-top: 1.4rem; } .why-list li { display: flex; gap: 0.85rem; align-items: flex-start; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0.9rem 1.1rem; transition: transform var(--transition), border-color var(--transition); } .why-list li:hover { transform: translateX(6px); border-color: var(--primary-soft); box-shadow: 0 0 12px rgba(124,58,237,0.12); } .why-list .wl-icon { font-size: 1.2rem; line-height: 1.5; } .why-list strong { display: block; font-family: var(--font-head); font-size: 0.97rem; } .why-list span.desc { font-size: 0.86rem; color: var(--text-soft); } /* ── Archie robot (pure CSS) ──────────────────────────────── */ .archie-stage { display: flex; flex-direction: column; align-items: center; padding: 2rem 0 0.5rem; } .archie { position: relative; width: 190px; height: 250px; animation: float 3.4s ease-in-out infinite; } .archie-antenna { position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 5px; height: 26px; background: var(--text-soft); border-radius: 3px; } .archie-antenna-tip { position: absolute; top: -10px; left: 50%; transform: translateX(-50%); width: 14px; height: 14px; border-radius: 50%; background: var(--secondary); animation: antennaBlink 1.6s ease-in-out infinite; box-shadow: 0 0 8px var(--secondary); } .archie-head { position: absolute; top: 22px; left: 50%; transform: translateX(-50%); width: 110px; height: 86px; background: linear-gradient(150deg, var(--primary), #9F67F8); border-radius: 28px; box-shadow: inset 0 -8px 14px rgba(0,0,0,0.25), 0 0 20px rgba(124,58,237,0.35); } .archie-eye { position: absolute; top: 26px; width: 22px; height: 22px; background: #fff; border-radius: 50%; box-shadow: inset 0 2px 4px rgba(0,0,0,0.2); overflow: hidden; } .archie-eye::after { content: ''; position: absolute; top: 5px; left: 5px; width: 12px; height: 12px; border-radius: 50%; background: #211D35; animation: eyeMove 4s ease-in-out infinite; } .archie-eye.left { left: 22px; } .archie-eye.right { right: 22px; } .archie-mouth { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); width: 44px; height: 4px; background: rgba(255,255,255,0.55); border-radius: 999px; } .archie-torso { position: absolute; top: 115px; left: 50%; transform: translateX(-50%); width: 130px; height: 90px; background: linear-gradient(160deg, #2E1B6B, #1A0E42); border-radius: 20px; box-shadow: inset 0 4px 10px rgba(124,58,237,0.18), 0 0 14px rgba(124,58,237,0.2); } .archie-screen { position: absolute; top: 16px; left: 50%; transform: translateX(-50%); width: 80px; height: 46px; background: #0b0920; border: 1.5px solid var(--primary-soft); border-radius: 7px; overflow: hidden; box-shadow: 0 0 8px rgba(124,58,237,0.4); } .archie-screen span { display: block; font-family: var(--font-code); font-size: 7px; color: var(--primary-soft); line-height: 1.8; padding: 4px 5px; animation: scroll 5s linear infinite; } .archie-arm { position: absolute; top: 128px; width: 20px; height: 62px; background: linear-gradient(160deg, #2E1B6B, #1A0E42); border-radius: 10px; } .archie-arm.left { left: 24px; transform-origin: top center; animation: waveArm 3.4s ease-in-out infinite; } .archie-arm.right { right: 24px; } .archie-leg { position: absolute; bottom: 0; width: 26px; height: 45px; background: linear-gradient(160deg, #2E1B6B, #1A0E42); border-radius: 10px 10px 12px 12px; } .archie-leg.left { left: 66px; } .archie-leg.right { right: 66px; } .archie-shadow { width: 130px; height: 18px; margin-top: 8px; background: radial-gradient(ellipse, rgba(124,58,237,0.3) 0%, transparent 70%); animation: shadowPulse 3.4s ease-in-out infinite; } .archie-caption { font-family: var(--font-code); font-size: 0.78rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-muted); margin-top: 1rem; } /* ── Features section ─────────────────────────────────────── */ .features-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.2rem; } .feature-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem 1.4rem; transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); } .feature-card:hover { transform: translateY(-5px); border-color: var(--border-hi); box-shadow: 0 12px 32px rgba(124,58,237,0.15); } .fc-icon { font-size: 1.6rem; margin-bottom: 0.8rem; display: block; } .feature-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.4rem; } .feature-card p { font-size: 0.88rem; color: var(--text-soft); margin: 0; line-height: 1.6; } /* ── Footer ───────────────────────────────────────────────── */ footer { border-top: 1px solid var(--border); padding: 2rem 1.5rem; text-align: center; font-family: var(--font-code); font-size: 0.78rem; color: var(--text-muted); letter-spacing: 0.1em; } .footer-inner { max-width: 1180px; margin: 0 auto; } /* ── Topic page header ────────────────────────────────────── */ .topic-header { padding: 7.5rem 1.5rem 2.8rem; background: radial-gradient(ellipse 800px 300px at 50% 0%, var(--primary-faint) 0%, transparent 75%), var(--bg); border-bottom: 1px solid var(--border); } .topic-header-inner { max-width: 860px; margin: 0 auto; } .topic-meta { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-bottom: 1rem; align-items: center; } .topic-meta .tag { background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.75); border-color: rgba(255,255,255,0.18); backdrop-filter: blur(4px); } [data-theme="light"] .topic-meta .tag { background: rgba(124,58,237,0.08); color: var(--primary); border-color: rgba(124,58,237,0.25); } .topic-header h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 700; letter-spacing: -0.02em; margin-bottom: 0.9rem; color: var(--text); } .topic-header .topic-lead { font-size: 1.08rem; color: var(--text-soft); max-width: 640px; line-height: 1.7; } /* ── Topic content body ───────────────────────────────────── */ .topic-body { max-width: 860px; margin: 0 auto; padding: 3rem 1.5rem 5rem; } /* ── Section blocks (topic pages) ────────────────────────── */ .section-block { margin-bottom: 3.6rem; } .section-block > h2 { font-size: clamp(1.5rem, 3vw, 1.95rem); font-weight: 700; margin-bottom: 1.2rem; letter-spacing: -0.015em; line-height: 1.15; position: relative; padding-left: 1.1rem; } .section-block > h2::before { content: ''; position: absolute; left: 0; top: 0.15em; width: 4px; height: calc(100% - 0.3em); background: var(--topic-color, var(--primary)); border-radius: 2px; box-shadow: 0 0 8px var(--topic-color, var(--primary)); } .section-block > h3 { font-size: 1.18rem; margin: 1.8rem 0 0.7rem; font-weight: 600; } .section-block p { margin-bottom: 1rem; color: var(--text); line-height: 1.75; } .section-block ul:not(.key-points), .section-block ol { margin: 0 0 1rem 1.4rem; } .section-block li { margin-bottom: 0.5rem; color: var(--text); line-height: 1.7; } /* ── Two-col layout ───────────────────────────────────────── */ .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin: 1.6rem 0; } /* ── Diagram boxes ────────────────────────────────────────── */ .diagram-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.8rem 1.4rem 1.1rem; margin: 1.8rem 0; overflow-x: auto; box-shadow: 0 4px 20px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.04); transition: box-shadow var(--transition), border-color var(--transition); } .diagram-box:hover { border-color: var(--border-hi); box-shadow: 0 8px 32px rgba(124,58,237,0.18), inset 0 1px 0 rgba(255,255,255,0.06); } .diagram-box svg { display: block; margin: 0 auto; width: 100%; height: auto; max-width: 740px; } .diagram-caption { text-align: center; font-size: 0.82rem; color: var(--text-muted); margin-top: 0.9rem; font-style: italic; font-family: var(--font-code); letter-spacing: 0.04em; } /* SVG helpers */ .svg-label { font-family: var(--font-body); font-size: 13px; font-weight: 600; fill: var(--text); } .svg-soft { font-family: var(--font-body); font-size: 11px; fill: var(--text-soft); } .svg-mono { font-family: var(--font-code); font-size: 11px; fill: var(--text-soft); } .svg-box { fill: var(--surface-2); stroke: var(--border); stroke-width: 1.5; } .svg-box-p { fill: rgba(124,58,237,0.12); stroke: var(--primary); stroke-width: 1.8; } .svg-line { stroke: var(--text-soft); stroke-width: 1.8; fill: none; } .svg-dash { stroke-dasharray: 7 6; animation: dashMove 1.2s linear infinite; } .svg-node { fill: var(--primary); animation: nodePulse 2.2s ease-in-out infinite; transform-box: fill-box; transform-origin: center; filter: drop-shadow(0 0 5px var(--primary)); } .svg-draw { stroke-dasharray: 320; stroke-dashoffset: 320; animation: drawPath 2.8s ease forwards infinite alternate; } .svg-node { filter: drop-shadow(0 0 5px currentColor); } /* Packets — JS-driven via initDiagramPackets() */ .pkt { transform-box: fill-box; transform-origin: center; } .pkt-1, .pkt-2 { opacity: 0; } .grow-bar { transform-box: fill-box; transform-origin: bottom; animation: fillUp 2.2s ease-in-out infinite alternate; } .seq { opacity: 0; animation: seqIn 0.7s ease forwards; } .seq-1 { animation-delay: 0.2s; } .seq-2 { animation-delay: 0.9s; } .seq-3 { animation-delay: 1.6s; } .seq-4 { animation-delay: 2.3s; } .seq-5 { animation-delay: 3.0s; } .seq-6 { animation-delay: 3.7s; } .seq-7 { animation-delay: 4.4s; } .seq-8 { animation-delay: 5.1s; } .blink-slow { animation: antennaBlink 2s ease-in-out infinite; } .spin-slow { transform-box: fill-box; transform-origin: center; animation: spin 9s linear infinite; } .bob { transform-box: fill-box; transform-origin: center; animation: float 3s ease-in-out infinite; } /* ── Callouts ─────────────────────────────────────────────── */ .callout { display: flex; gap: 1rem; align-items: flex-start; border-radius: var(--radius-sm); padding: 1.1rem 1.3rem; margin: 1.6rem 0; border: 1px solid; font-size: 0.92rem; line-height: 1.7; /* Fix: prevent any overflow clipping */ min-height: 0; width: 100%; } .callout > * { min-width: 0; } .callout p { margin: 0; color: var(--text-soft); line-height: 1.7; } .callout strong { font-family: var(--font-head); display: block; margin-bottom: 0.25rem; font-size: 0.96rem; color: var(--text); } .callout .co-icon { font-size: 1.25rem; line-height: 1.5; flex-shrink: 0; margin-top: 0.1rem; } .callout.info { background: color-mix(in srgb, #3B82F6 8%, var(--surface)); border-color: color-mix(in srgb, #3B82F6 30%, transparent); } .callout.tip { background: color-mix(in srgb, var(--accent) 8%, var(--surface)); border-color: color-mix(in srgb, var(--accent) 30%, transparent); } .callout.warn { background: color-mix(in srgb, var(--secondary) 9%, var(--surface)); border-color: color-mix(in srgb, var(--secondary) 35%, transparent); } .callout.success { background: color-mix(in srgb, var(--accent) 8%, var(--surface)); border-color: color-mix(in srgb, var(--accent) 30%, transparent); } .callout.archie { background: color-mix(in srgb, var(--primary) 8%, var(--surface)); border-color: color-mix(in srgb, var(--primary) 30%, transparent); border-left: 3px solid var(--primary); box-shadow: 0 0 18px rgba(124,58,237,0.1); } .callout.archie .co-icon { animation: float 2.8s ease-in-out infinite; color: var(--primary-soft); } /* ── Key insight block (new) ──────────────────────────────── */ .key-insight { position: relative; font-family: var(--font-display); font-style: italic; font-size: 1.25rem; line-height: 1.55; color: var(--text); padding: 1.8rem 2rem; margin: 2rem 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); max-width: 780px; } .key-insight::before { content: 'KEY INSIGHT'; position: absolute; top: -0.55em; left: 1.5rem; font-family: var(--font-code); font-style: normal; font-size: 0.68rem; letter-spacing: 0.28em; background: var(--bg); padding: 0 0.75rem; color: var(--topic-color, var(--primary)); } [data-theme="light"] .key-insight::before { background: var(--bg); } /* ── Comparison tables ────────────────────────────────────── */ .table-wrap { overflow-x: auto; margin: 1.6rem 0; border-radius: var(--radius-sm); border: 1px solid var(--border); box-shadow: var(--shadow-sm); } .compare-table { font-size: 0.88rem; min-width: 540px; background: var(--surface); } .compare-table th { background: var(--topic-color, var(--primary)); color: #fff; font-family: var(--font-code); font-weight: 500; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; text-align: left; padding: 0.8rem 1rem; } .compare-table td { padding: 0.72rem 1rem; border-top: 1px solid var(--border); vertical-align: top; color: var(--text); line-height: 1.6; } .compare-table tbody tr { transition: background var(--transition); } .compare-table tbody tr:hover { background: var(--surface-2); } .compare-table td:first-child { font-weight: 600; font-family: var(--font-code); font-size: 0.84rem; } /* ── Code blocks ──────────────────────────────────────────── */ .code-block { background: #060414; color: #ccc8f0; font-family: var(--font-code); font-size: 0.84rem; line-height: 1.7; border-radius: var(--radius-sm); padding: 1.3rem 1.5rem; margin: 1.6rem 0; overflow-x: auto; border: 1px solid rgba(124,58,237,0.25); box-shadow: 0 4px 20px rgba(0,0,0,0.4), inset 0 0 0 1px rgba(167,139,250,0.05); position: relative; } .code-block::before { content: attr(data-lang); position: absolute; top: 0.6rem; right: 1rem; font-size: 0.66rem; color: rgba(124,58,237,0.6); text-transform: uppercase; letter-spacing: 0.12em; } .code-block .c-k { color: #C084FC; } .code-block .c-s { color: #6EE7B7; } .code-block .c-c { color: #4C4878; } .code-block .c-n { color: #FCD34D; } [data-theme="light"] .code-block { background: #1a1035; color: #d8d4f8; border-color: rgba(124,58,237,0.3); } /* ── Steps ────────────────────────────────────────────────── */ .steps { display: grid; gap: 1rem; margin: 1.6rem 0; } .step-item { display: flex; gap: 1rem; align-items: flex-start; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 1.1rem 1.3rem; transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition); } .step-item:hover { transform: translateX(6px); border-color: var(--topic-color, var(--primary)); box-shadow: 0 0 16px rgba(124,58,237,0.12); } .step-num { /* flex:none prevents the parent's "flex:1 on div" rule from stretching this into an oval */ flex: none; width: 34px; height: 34px; border-radius: 50%; background: var(--topic-color, var(--primary)); color: #fff; font-family: var(--font-code); font-weight: 600; font-size: 0.88rem; display: grid; place-items: center; margin-top: 0.1rem; box-shadow: 0 0 10px color-mix(in srgb, var(--topic-color, var(--primary)) 50%, transparent); } .step-item > div:not(.step-num) { flex: 1; min-width: 0; } .step-item strong { font-family: var(--font-head); font-size: 1rem; display: block; margin-bottom: 0.25rem; } .step-item p { margin: 0; font-size: 0.9rem; color: var(--text-soft); line-height: 1.65; } /* ── Key points ───────────────────────────────────────────── */ .key-points { list-style: none; display: grid; gap: 0.5rem; margin: 1.2rem 0; } .key-points li { padding-left: 1.4rem; position: relative; color: var(--text-soft); font-size: 0.94rem; line-height: 1.65; } .key-points li::before { content: '▸'; position: absolute; left: 0; color: var(--topic-color, var(--primary)); font-size: 0.75rem; top: 0.28em; } /* ── At-a-glance box ──────────────────────────────────────── */ .at-a-glance { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.6rem 1.8rem; margin: 1.8rem 0; box-shadow: 0 0 0 1px var(--border), 0 4px 16px rgba(124,58,237,0.08), inset 0 1px 0 rgba(255,255,255,0.04); } .at-a-glance h3 { font-size: 0.9rem; font-family: var(--font-code); letter-spacing: 0.2em; text-transform: uppercase; color: var(--topic-color, var(--primary)); margin-bottom: 1rem; } .aag-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px,1fr)); gap: 0.8rem; } .mini-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0.9rem 1rem; transition: transform 0.25s var(--transition), box-shadow 0.25s ease; } .mini-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(124,58,237,0.14); } .mini-card .mc-label { font-family: var(--font-code); font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 0.3rem; } .mini-card .mc-val { font-family: var(--font-code); font-size: 1rem; font-weight: 500; color: var(--topic-color, var(--primary)); } .mini-card .mc-desc { font-size: 0.8rem; color: var(--text-soft); margin-top: 0.2rem; line-height: 1.5; } /* ── Q&A accordion ────────────────────────────────────────── */ .qa-block { margin: 1.6rem 0; } .qa-question { width: 100%; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 1rem 1.3rem; text-align: left; cursor: pointer; font-family: var(--font-head); font-size: 1rem; font-weight: 600; color: var(--text); display: flex; align-items: center; justify-content: space-between; gap: 1rem; transition: border-color var(--transition), background var(--transition), box-shadow var(--transition); } .qa-question:hover { border-color: var(--topic-color, var(--primary)); box-shadow: 0 0 12px rgba(124,58,237,0.1); } .qa-question.active { border-color: var(--topic-color, var(--primary)); background: var(--primary-faint); } .qa-chevron { transition: transform 0.35s ease; font-size: 0.75rem; color: var(--text-muted); flex-shrink: 0; } .qa-question.active .qa-chevron { transform: rotate(180deg); } .qa-answer { max-height: 0; overflow: hidden; padding: 0 1.3rem; background: var(--surface-2); border: 1px solid var(--border); border-top: none; border-radius: 0 0 var(--radius-sm) var(--radius-sm); font-size: 0.93rem; color: var(--text-soft); line-height: 1.75; transition: max-height 0.45s cubic-bezier(0.2, 0.7, 0.2, 1), padding 0.45s ease; } .qa-answer.open { padding: 1rem 1.3rem 1.2rem; max-height: 600px; } .qa-answer p { margin: 0 0 0.7rem; } .qa-answer p:last-child { margin: 0; } .qa-answer pre { margin: 0.7rem 0 0; } /* ── Reading links ────────────────────────────────────────── */ .reading-links-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); gap: 1rem; margin-top: 1.2rem; } .reading-link-card { display: flex; flex-direction: column; gap: 0.3rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 1rem 1.1rem; text-decoration: none; color: var(--text); transition: transform 0.25s var(--transition), box-shadow 0.25s ease, border-color 0.25s ease; } .reading-link-card:hover { transform: translateY(-3px); border-color: var(--topic-color, var(--primary)); box-shadow: 0 8px 24px rgba(124,58,237,0.16); } .reading-link-title { font-weight: 600; font-size: 0.92rem; line-height: 1.4; } .reading-link-source { font-family: var(--font-code); font-size: 0.72rem; color: var(--text-muted); letter-spacing: 0.06em; } /* ── Quiz block ───────────────────────────────────────────── */ .quiz-block { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.8rem; margin: 2rem 0; } .quiz-block h3 { font-size: 1.05rem; margin-bottom: 1.2rem; } .quiz-options { display: grid; gap: 0.6rem; } .quiz-option { width: 100%; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0.9rem 1.1rem; text-align: left; cursor: pointer; font-size: 0.92rem; color: var(--text); transition: border-color var(--transition), background var(--transition); font-family: var(--font-body); } .quiz-option:hover { border-color: var(--topic-color, var(--primary)); background: var(--primary-faint); } .quiz-option.correct { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--surface)); color: var(--accent); } .quiz-option.wrong { border-color: #EF4444; background: color-mix(in srgb, #EF4444 10%, var(--surface)); color: #EF4444; } .quiz-result { margin-top: 1rem; font-size: 0.9rem; color: var(--text-soft); min-height: 1.5rem; } .quiz-result.pass { color: var(--accent); } .quiz-result.fail { color: #F87171; } /* ── Reveal animation ─────────────────────────────────────── */ .reveal { opacity: 0; transform: translateY(44px); transition: opacity 0.9s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1); } .reveal.visible { opacity: 1; transform: none; } /* ── Navigation (topic prev/next) ────────────────────────── */ .topic-nav { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; border-top: 1px solid var(--border); padding-top: 2rem; margin-top: 1rem; } .topic-nav a { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-code); font-size: 0.84rem; letter-spacing: 0.06em; color: var(--text-soft); padding: 0.7rem 1.2rem; border: 1px solid var(--border); border-radius: var(--radius-sm); transition: color var(--transition), border-color var(--transition), box-shadow var(--transition); } .topic-nav a:hover { color: var(--primary-soft); border-color: var(--primary-soft); box-shadow: 0 0 12px rgba(124,58,237,0.15); } .topic-nav .nav-prev { justify-content: flex-start; } .topic-nav .nav-next { justify-content: flex-end; margin-left: auto; } /* ── Scroll timeline (interview guide) ───────────────────── */ .timeline { display: grid; gap: 0; position: relative; margin: 1.8rem 0; } .timeline::before { content: ''; position: absolute; left: 17px; top: 0; bottom: 0; width: 2px; background: var(--border); } .tl-item { display: flex; gap: 1.2rem; padding: 1.1rem 0 1.1rem 0; position: relative; } .tl-dot { flex-shrink: 0; width: 36px; height: 36px; border-radius: 50%; background: var(--topic-color, var(--primary)); color: #fff; display: grid; place-items: center; font-family: var(--font-code); font-size: 0.82rem; font-weight: 600; position: relative; z-index: 1; box-shadow: 0 0 12px color-mix(in srgb, var(--topic-color, var(--primary)) 60%, transparent); margin-top: 0.1rem; } .tl-content { flex: 1; min-width: 0; } .tl-content h4 { font-size: 1.02rem; font-weight: 600; margin-bottom: 0.35rem; } .tl-content p { font-size: 0.88rem; color: var(--text-soft); margin: 0; line-height: 1.65; } /* ── Section header badge ─────────────────────────────────── */ .section-badge { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-code); font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--topic-color, var(--primary)); background: color-mix(in srgb, var(--topic-color, var(--primary)) 10%, transparent); border: 1px solid color-mix(in srgb, var(--topic-color, var(--primary)) 28%, transparent); padding: 0.3rem 0.85rem 0.3rem 0.65rem; border-radius: 999px; margin-bottom: 0.75rem; } .section-badge::before { content: ''; display: block; width: 14px; height: 1px; background: currentColor; } /* ── Mini progress / estimation table ────────────────────── */ .est-table { font-family: var(--font-code); font-size: 0.82rem; margin: 1.2rem 0; } .est-table th { background: var(--surface-2); color: var(--text-soft); } /* ── Animations / keyframes ───────────────────────────────── */ @keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } } @keyframes glow { 0%, 100% { filter: drop-shadow(0 0 4px var(--primary)); } 50% { filter: drop-shadow(0 0 10px var(--secondary)); } } @keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-7px); } } @keyframes antennaBlink { 0%, 80%, 100% { opacity: 1; transform: translateX(-50%) scale(1); } 90% { opacity: 0.4; transform: translateX(-50%) scale(0.8); } } @keyframes eyeMove { 0%,45% { transform: translate(0,0); } 50% { transform: translate(3px,2px); } 60%,95% { transform: translate(0,0); } 98% { transform: translate(-3px,0); } 100% { transform: translate(0,0); } } @keyframes waveArm { 0%,100% { transform: rotate(0deg); } 25% { transform: rotate(-22deg); } 75% { transform: rotate(18deg); } } @keyframes scroll { 0% { transform: translateY(0); } 100% { transform: translateY(-120px); } } @keyframes shadowPulse { 0%,100% { transform: scaleX(1); opacity: 0.5; } 50% { transform: scaleX(0.78); opacity: 0.25; } } @keyframes popIn { 0% { transform: scale(0); opacity: 0; } 60% { transform: scale(1.18); } 100% { transform: scale(1); opacity: 1; } } @keyframes dashMove { from { stroke-dashoffset: 0; } to { stroke-dashoffset: -26; } } @keyframes nodePulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.18); } } @keyframes drawPath { from { stroke-dashoffset: 320; opacity: 0.4; } to { stroke-dashoffset: 0; opacity: 1; } } @keyframes fillUp { from { transform: scaleY(0.2); opacity: 0.5; } to { transform: scaleY(1); opacity: 1; } } @keyframes seqIn { from { opacity: 0; transform: translateX(-12px); } to { opacity: 1; transform: none; } } @keyframes spin { to { transform: rotate(360deg); } } @keyframes scrollPulse { 0%, 100% { opacity: 0.3; transform: scaleY(1); } 50% { opacity: 1; transform: scaleY(1.18); } } @keyframes gradientShift { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } } /* ── Responsive ───────────────────────────────────────────── */ @media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; } .two-col { grid-template-columns: 1fr; } .hero h1 { font-size: clamp(2rem, 8vw, 3rem); } .hero-stats { gap: 2rem; } .topic-body { padding: 2.4rem 1.2rem 4rem; } .topics-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); } } @media (max-width: 600px) { body { font-size: 15px; } .hero { padding: 8rem 1.2rem 5rem; } .hero h1 { font-size: clamp(1.9rem, 10vw, 2.6rem); } .hero-stats { gap: 1.6rem; } .stat .num { font-size: 1.6rem; } .section { padding: 3rem 1.2rem; } .topics-grid { grid-template-columns: 1fr; } .topic-header { padding: 6rem 1.2rem 2rem; } .section-block > h2 { font-size: 1.35rem; } .aag-grid { grid-template-columns: 1fr 1fr; } .reading-links-grid { grid-template-columns: 1fr; } .two-col { grid-template-columns: 1fr; } .topic-nav { flex-direction: column; } .topic-nav .nav-next { margin-left: 0; } .callout { gap: 0.8rem; padding: 0.9rem 1rem; } .timeline::before { left: 15px; } .tl-dot { width: 32px; height: 32px; } .features-grid { grid-template-columns: 1fr; } } @media (max-width: 420px) { .nav-links { display: none; } } /* ── Interactive Demo Components ──────────────────────────── */ .demo-shell { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin: 2rem 0; box-shadow: 0 4px 24px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.04); } .demo-header { display: flex; align-items: center; gap: 0.8rem; padding: 0.75rem 1.2rem; background: var(--surface-2); border-bottom: 1px solid var(--border); } .demo-label { font-family: var(--font-code); font-size: 0.66rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--primary-soft); background: rgba(124,58,237,0.14); border: 1px solid rgba(124,58,237,0.3); padding: 0.18rem 0.6rem; border-radius: 999px; } .demo-title { font-family: var(--font-code); font-size: 0.84rem; color: var(--text-soft); letter-spacing: 0.03em; } .demo-canvas { display: block; width: 100%; background: rgba(5,3,14,0.96); border-bottom: 1px solid var(--border); cursor: crosshair; } .demo-controls { padding: 1rem 1.2rem; display: flex; flex-direction: column; gap: 0.85rem; } .demo-ctrl { display: flex; align-items: center; gap: 0.85rem; flex-wrap: wrap; } .ctrl-label { font-family: var(--font-code); font-size: 0.78rem; color: var(--text-soft); min-width: 140px; letter-spacing: 0.04em; } .ctrl-val { color: var(--primary-soft); font-weight: 600; margin-left: 0.35rem; } .ctrl-slider { flex: 1; min-width: 120px; max-width: 280px; -webkit-appearance: none; appearance: none; height: 3px; border-radius: 99px; background: var(--surface-3); outline: none; cursor: pointer; } .ctrl-slider::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 14px; height: 14px; border-radius: 50%; background: var(--primary); cursor: pointer; box-shadow: 0 0 6px var(--primary); } .ctrl-slider::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--primary); cursor: pointer; border: none; box-shadow: 0 0 6px var(--primary); } .ctrl-select { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0.42rem 0.8rem; font-family: var(--font-code); font-size: 0.82rem; cursor: pointer; outline: none; transition: border-color var(--transition); } .ctrl-select:hover, .ctrl-select:focus { border-color: var(--primary-soft); } .demo-btn { font-family: var(--font-code); font-size: 0.8rem; letter-spacing: 0.05em; padding: 0.48rem 1rem; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--surface-2); color: var(--text-soft); cursor: pointer; transition: border-color var(--transition), color var(--transition), box-shadow var(--transition); } .demo-btn:hover { border-color: var(--primary-soft); color: var(--primary-soft); box-shadow: 0 0 10px rgba(124,58,237,0.2); } .demo-btn.accent { border-color: var(--primary); color: var(--primary-soft); background: rgba(124,58,237,0.1); } .demo-btn.accent:hover { background: rgba(124,58,237,0.2); box-shadow: 0 0 14px rgba(124,58,237,0.3); } .demo-btn.red { border-color: rgba(239,68,68,0.4); color: #F87171; } .demo-btn.red:hover { border-color: #EF4444; box-shadow: 0 0 10px rgba(239,68,68,0.25); } .demo-btn.muted { opacity: 0.6; } .demo-btn.muted:hover { opacity: 1; } .demo-stats { display: flex; gap: 1.2rem; flex-wrap: wrap; padding-top: 0.4rem; border-top: 1px solid var(--border); } .demo-stat { display: flex; flex-direction: column; gap: 0.18rem; } .ds-label { font-family: var(--font-code); font-size: 0.68rem; color: var(--text-muted); letter-spacing: 0.15em; text-transform: uppercase; } .ds-val { font-family: var(--font-code); font-size: 0.94rem; font-weight: 600; } .ds-val.green { color: #34D399; } .ds-val.amber { color: #FCD34D; } .ds-val.red { color: #F87171; } .ds-val.purple { color: var(--primary-soft); } /* Theme: light adjustments */ [data-theme="light"] .demo-canvas { background: #0d0b1e; } [data-theme="light"] .demo-shell { background: #fff; } [data-theme="light"] .ctrl-slider { background: #e2dff5; } /* Interactive demo wrapper in topic pages */ #demo-scale, #demo-lb, #demo-cache, #demo-replication, #demo-ratelimit { margin: 2.2rem 0; } /* ── Navbar logo ──────────────────────────────────────────── */ .logo-icon { flex-shrink: 0; color: var(--primary-soft); filter: drop-shadow(0 0 6px rgba(124,58,237,0.5)); } .logo-text { display: flex; align-items: center; gap: 0.22em; } .logo-accent { color: var(--primary-soft); } /* ── Topic header breadcrumb + metadata ──────────────────── */ .breadcrumb { font-family: var(--font-code); font-size: 0.72rem; letter-spacing: 0.08em; color: var(--text-muted); margin-bottom: 0.6rem; } .breadcrumb a { color: var(--text-muted); text-decoration: none; } .breadcrumb a:hover { color: var(--primary-soft); } .topic-num-big { font-family: var(--font-code); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; color: var(--primary-soft); background: rgba(124,58,237,0.12); border: 1px solid rgba(124,58,237,0.25); display: inline-block; padding: 0.25rem 0.75rem; border-radius: 999px; margin-bottom: 1rem; } .subtitle { font-size: 1.08rem; color: var(--text-soft); line-height: 1.7; max-width: 66ch; margin-top: 0.75rem; } /* ── Cards grid (3-up mini cards) ────────────────────────── */ .cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 1rem; margin: 1.2rem 0; } .mc-icon { font-size: 1.5rem; display: block; margin-bottom: 0.5rem; line-height: 1; } .mc-icon:empty::before { content: '⬡'; font-size: 1.3rem; opacity: 0.35; } /* ── Company badges ──────────────────────────────────────── */ .company-badges { display: flex; flex-wrap: wrap; gap: 0.55rem; margin: 1rem 0 1.4rem; } .company-badge { font-family: var(--font-code); font-size: 0.73rem; font-weight: 600; letter-spacing: 0.07em; color: var(--text-soft); background: var(--surface-2); border: 1px solid var(--border); padding: 0.3rem 0.75rem; border-radius: 999px; transition: border-color var(--transition), color var(--transition); } .company-badge:hover { border-color: var(--primary-soft); color: var(--primary-soft); } /* ── Anti-patterns list ──────────────────────────────────── */ .antipatterns { display: flex; flex-direction: column; gap: 1rem; margin: 1.2rem 0; } .antipattern-item { display: flex; align-items: flex-start; gap: 1rem; background: var(--surface); border: 1px solid var(--border); border-left: 3px solid #EF4444; border-radius: var(--radius-sm); padding: 1rem 1.1rem; transition: border-color var(--transition), box-shadow var(--transition); } .antipattern-item:hover { border-left-color: #F87171; box-shadow: 0 4px 16px rgba(239,68,68,0.12); } .antipattern-icon { flex: none; width: 32px; height: 32px; border-radius: 50%; background: rgba(239,68,68,0.12); border: 1px solid rgba(239,68,68,0.28); display: flex; align-items: center; justify-content: center; font-size: 1rem; line-height: 1; } .antipattern-icon:empty::after { content: '✕'; color: #F87171; font-size: 0.85rem; font-weight: 700; } .antipattern-text h4 { margin: 0 0 0.3rem; font-size: 0.95rem; color: var(--text); } .antipattern-text p { margin: 0; font-size: 0.88rem; color: var(--text-soft); line-height: 1.65; } /* ── Latency bar ─────────────────────────────────────────── */ .latency-bar { display: inline-block; height: 10px; border-radius: 5px; vertical-align: middle; min-width: 4px; transition: width 0.4s ease; } /* ── Reading links wrapper ───────────────────────────────── */ .reading-links { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; margin-top: 1.2rem; } .reading-link-icon { font-size: 1.3rem; margin-bottom: 0.3rem; display: block; line-height: 1; } .reading-link-icon:empty::before { content: '📖'; } /* ── Quiz feedback ───────────────────────────────────────── */ .quiz-feedback { display: none; margin-top: 1rem; padding: 0.9rem 1.1rem; background: rgba(52,211,153,0.08); border: 1px solid rgba(52,211,153,0.28); border-radius: var(--radius-sm); color: #34D399; font-size: 0.9rem; line-height: 1.65; } .quiz-feedback.show { display: block; animation: fadeUp 0.35s ease both; } /* ── Q&A accordion ───────────────────────────────────────── */ .qa-list { display: flex; flex-direction: column; gap: 0.6rem; margin: 1rem 0; } .qa-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; transition: border-color var(--transition); } .qa-item:hover, .qa-item.open { border-color: var(--primary-soft); } .qa-question { width: 100%; text-align: left; padding: 0.9rem 1.1rem; background: none; border: none; cursor: pointer; color: var(--text); font-size: 0.96rem; font-weight: 600; line-height: 1.45; letter-spacing: 0.01em; display: flex; align-items: center; justify-content: space-between; gap: 1rem; } .qa-question::after { content: '+'; flex-shrink: 0; font-size: 1.25rem; color: var(--primary-soft); transition: transform 0.25s ease; } .qa-item.open .qa-question::after { transform: rotate(45deg); } .qa-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s cubic-bezier(0.4,0,0.2,1), padding 0.25s ease; padding: 0 1.1rem; } .qa-item.open .qa-answer { max-height: 600px; padding: 0.1rem 1.1rem 1rem; } .qa-answer p { margin: 0.5rem 0; font-size: 0.9rem; color: var(--text-soft); line-height: 1.7; } /* ── Bottom nav (topic page prev/next) ───────────────────── */ .bottom-nav { display: flex; align-items: stretch; justify-content: space-between; gap: 1rem; margin: 3rem 0 1rem; border-top: 1px solid var(--border); padding-top: 1.8rem; } .bottom-nav a { display: flex; flex-direction: column; gap: 0.2rem; padding: 0.9rem 1.3rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); text-decoration: none; color: var(--text); min-width: 160px; max-width: 280px; transition: border-color var(--transition), box-shadow var(--transition), transform 0.2s ease; flex-shrink: 0; } .bottom-nav a:hover { border-color: var(--primary-soft); box-shadow: 0 4px 18px rgba(124,58,237,0.18); transform: translateY(-2px); } .bottom-nav a.next { margin-left: auto; text-align: right; } .bn-dir { font-family: var(--font-code); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--primary-soft); font-weight: 600; } .bn-title { font-size: 0.96rem; font-weight: 600; color: var(--text); } @media (max-width: 600px) { .bottom-nav { flex-direction: column; } .bottom-nav a { max-width: 100%; } .bottom-nav a.next { margin-left: 0; text-align: left; } .cards-grid { grid-template-columns: 1fr 1fr; } .reading-links { grid-template-columns: 1fr; } } /* ═══════════════════════════════════════════════════════════ CRYSTAL AESTHETIC — shimmer · prism · glass · sparkle ═══════════════════════════════════════════════════════════ */ /* ── Crystal keyframes ───────────────────────────────────── */ @keyframes crystalBarGlow { 0%, 100% { box-shadow: 0 0 8px var(--topic-color, var(--primary)); } 50% { box-shadow: 0 0 18px var(--topic-color, var(--primary)), 0 0 36px color-mix(in srgb, var(--topic-color, var(--primary)) 35%, transparent); } } @keyframes auroraFloat { 0% { transform: translate(0%, 0%) scale(1); } 33% { transform: translate(2.5%, -1.5%) scale(1.05); } 66% { transform: translate(-1.5%, 2%) scale(0.97); } 100% { transform: translate(0%, 0%) scale(1); } } @keyframes crystalBadgePulse { 0%, 100% { box-shadow: 0 0 0 0 transparent; } 50% { box-shadow: 0 0 12px 1px color-mix(in srgb, currentColor 22%, transparent); } } @keyframes prismReadingBar { 0% { background-position: 0% 50%; } 100% { background-position: 200% 50%; } } @keyframes cardShimmer { 0% { left: -60%; opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { left: 130%; opacity: 0; } } /* ── Aurora background orbs (injected by JS) ────────────── */ .aurora-orb { position: fixed; pointer-events: none; z-index: -1; /* paint order step 2: after html bg, before all body content */ border-radius: 50%; filter: blur(90px); mix-blend-mode: screen; will-change: transform; animation: auroraFloat var(--orb-dur, 20s) ease-in-out infinite; animation-delay: var(--orb-delay, 0s); } [data-theme="light"] .aurora-orb { mix-blend-mode: multiply; filter: blur(90px) saturate(1.5); opacity: 0.35; } /* ── Crystal particle canvas ────────────────────────────── */ #crystal-canvas { position: fixed; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: -1; /* same layer as orbs — always behind body content */ mix-blend-mode: screen; opacity: 0.6; } [data-theme="light"] #crystal-canvas { mix-blend-mode: multiply; opacity: 0.25; } /* ── Reading progress bar — rainbow prism ────────────────── */ .reading-progress { background: linear-gradient(90deg, var(--primary), #06B6D4, #10B981, #F59E0B, #EC4899, var(--primary)); background-size: 300% 100%; animation: prismReadingBar 4s linear infinite; box-shadow: 0 0 14px var(--primary), 0 0 28px rgba(6,182,212,0.25); } /* ── Crystal-glow h2 accent bar ──────────────────────────── */ .section-block > h2::before { animation: crystalBarGlow 3.5s ease-in-out infinite; } /* ── Section badge — crystal pulse ───────────────────────── */ .section-badge { animation: crystalBadgePulse 3s ease-in-out infinite; } /* ── Topic cards — crystal glass ─────────────────────────── */ /* Shimmer streak lives entirely inside overflow:hidden card */ .topic-card::after { content: ''; position: absolute; top: 0; left: -60%; width: 30%; height: 100%; background: linear-gradient( 90deg, transparent, rgba(255,255,255,0.07), rgba(167,139,250,0.09), rgba(255,255,255,0.04), transparent ); transform: skewX(-18deg); pointer-events: none; opacity: 0; } .topic-card:hover::after { animation: cardShimmer 0.8s ease forwards; } /* Enhanced glow on hover — no animation conflict with transition */ .topic-card:hover { box-shadow: 0 0 0 1px color-mix(in srgb, var(--card-color, var(--primary)) 45%, transparent), 0 20px 50px color-mix(in srgb, var(--card-color, var(--primary)) 22%, transparent), 0 8px 20px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.06); } /* ── Q&A accordion — subtle glass tint when open ─────────── */ .qa-item.open .qa-question { background: color-mix(in srgb, var(--topic-color, var(--primary)) 7%, transparent); } .qa-item.open .qa-answer { background: color-mix(in srgb, var(--topic-color, var(--primary)) 3%, transparent); } /* For the older accordion pattern in topic pages */ .qa-answer.open { background: color-mix(in srgb, var(--topic-color, var(--primary)) 4%, var(--surface)); } .qa-question.active { background: color-mix(in srgb, var(--topic-color, var(--primary)) 8%, var(--surface)) !important; } /* ── Callout boxes — subtle glass ────────────────────────── */ .callout { backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); } /* ── Diagram boxes — crystal depth on hover ──────────────── */ .diagram-box:hover { box-shadow: 0 12px 48px color-mix(in srgb, var(--primary) 18%, transparent), 0 0 0 1px var(--border-hi), inset 0 1px 0 rgba(255,255,255,0.07); } /* ── Feature cards ───────────────────────────────────────── */ .feature-card:hover { box-shadow: 0 14px 36px rgba(124,58,237,0.16), inset 0 1px 0 rgba(255,255,255,0.06); } /* ── Topic header — richer radial aurora ────────────────── */ .topic-header { background: radial-gradient(ellipse 900px 380px at 50% -5%, color-mix(in srgb, var(--topic-color, var(--primary)) 13%, transparent) 0%, transparent 70%), radial-gradient(ellipse 360px 200px at 82% 55%, rgba(6,182,212,0.05) 0%, transparent 70%), var(--bg); } /* ── Light theme crystal adjustments ────────────────────── */ [data-theme="light"] .diagram-box:hover { box-shadow: 0 12px 40px rgba(124,58,237,0.12), 0 0 0 1px rgba(124,58,237,0.25), inset 0 1px 0 rgba(255,255,255,0.8); } [data-theme="light"] .topic-card:hover { box-shadow: 0 0 0 1px color-mix(in srgb, var(--card-color, var(--primary)) 35%, transparent), 0 16px 40px color-mix(in srgb, var(--card-color, var(--primary)) 14%, transparent), 0 4px 12px rgba(33,29,53,0.1); } [data-theme="light"] .section-block > h2::before { box-shadow: 0 0 12px color-mix(in srgb, var(--topic-color, var(--primary)) 60%, transparent); } /* ── Reduced-motion: disable all animation additions ─────── */ @media (prefers-reduced-motion: reduce) { .topic-card:hover::after { animation: none; } .aurora-orb { animation: none; } #crystal-canvas { display: none; } .section-block > h2::before { animation: none; } .section-badge { animation: none; } .reading-progress { animation: none; background: linear-gradient(90deg, var(--primary), var(--secondary)); background-size: auto; } }