/* ============================================================
   IT Freshman Hub 2026 — Cozy Light Stylesheet
   Description: Warm, light, cozy palette with glassmorphism,
                soft gradients, and approachable typography.
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* Base surfaces (Warm Linen/Parchment) */
  --bg: #FAF8F4;
  --bg-elev: #FFFDF9;
  --surface: rgba(255, 253, 249, 0.65);
  --surface-2: rgba(255, 250, 240, 0.85);
  --surface-hover: rgba(255, 250, 240, 0.95);

  /* Borders (Warm soft browns) */
  --border: rgba(58, 53, 46, 0.12);
  --border-strong: rgba(58, 53, 46, 0.2);

  /* Text (Warm charcoals instead of cold black) */
  --fg: #3A352E;
  --fg-muted: #6B6258;
  --fg-dim: #968B7E;

  /* Accents (Cozy Autumn/Sage palette) */
  --accent: #14B8A6;      /* Teal */
  --accent-2: #3BC9DB;    /* Soft Cyan */
  --accent-3: #0F766E;    /* Dark Teal */
  --accent-cool: #1098AD; /* Dark Cyan */
  --accent-glow: rgba(20, 184, 166, 0.25);

  /* Gradients */
  --grad-main: linear-gradient(135deg, #3BC9DB 0%, #14B8A6 100%);
  --grad-warm: linear-gradient(135deg, #14B8A6 0%, #0F766E 100%);
  --grad-cool: linear-gradient(135deg, #3BC9DB 0%, #1098AD 100%);

  /* Radii */
  --r-sm: 10px;
  --r: 16px;
  --r-lg: 24px;
  --r-xl: 32px;

  /* Shadows (Soft, diffused, warm) */
  --shadow-sm: 0 4px 12px rgba(58, 53, 46, 0.05);
  --shadow: 0 16px 40px rgba(58, 53, 46, 0.08);
  --shadow-glow: 0 0 40px var(--accent-glow);

  /* Motion */
  --t-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --t: 0.32s cubic-bezier(0.4, 0, 0.2, 1);
  --t-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container: 1200px;
  --nav-h: 72px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 24px); }
body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }

/* Selection */
::selection { background: var(--accent); color: #FFFDF9; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #F0EBE3; }
::-webkit-scrollbar-thumb { background: #D4C9BC; border-radius: 10px; border: 2px solid #F0EBE3; }
::-webkit-scrollbar-thumb:hover { background: var(--fg-dim); }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}
.section-alt { background: linear-gradient(180deg, transparent 0%, rgba(20, 184, 166, 0.03) 50%, transparent 100%); }

.section-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 6px 14px;
  border: 1px solid rgba(20, 184, 166, 0.3);
  border-radius: 999px;
  background: rgba(20, 184, 166, 0.08);
  margin-bottom: 18px;
}
.section-title {
  font-family: 'Fraunces', serif;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 18px;
}
.section-desc {
  color: var(--fg-muted);
  font-size: 1.08rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Scroll progress bar ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: var(--grad-main);
  z-index: 1000;
  transition: width 0.1s linear;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ---------- Animated background ---------- */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(58, 53, 46, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(58, 53, 46, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 90%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 90%);
}
.bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.4;
  animation: float-blob 22s ease-in-out infinite;
  will-change: transform;
}
.bg-blob-1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  top: -12%; left: -10%;
}
.bg-blob-2 {
  width: 620px; height: 620px;
  background: radial-gradient(circle, var(--accent-cool) 0%, transparent 70%);
  bottom: -18%; right: -12%;
  animation-delay: -7s;
}
.bg-blob-3 {
  width: 420px; height: 420px;
  background: radial-gradient(circle, var(--accent-3) 0%, transparent 70%);
  top: 45%; left: 50%;
  animation-delay: -14s;
  opacity: 0.3;
}
@keyframes float-blob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(70px, -50px) scale(1.08); }
  66% { transform: translate(-50px, 60px) scale(0.94); }
}
#particleCanvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  opacity: 0.5;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  transition: background var(--t), border-color var(--t), backdrop-filter var(--t);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(250, 246, 240, 0.75);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  backdrop-filter: blur(20px) saturate(150%);
  border-bottom-color: var(--border);
}
.nav-inner {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 1.1rem;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--grad-warm);
  color: #FFFDF9;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
}
.logo-year { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--fg-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--t-fast), background var(--t-fast);
  position: relative;
}
.nav-links a:hover { color: var(--fg); background: var(--surface-2); }
.nav-links a.active { color: var(--accent); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform var(--t), opacity var(--t);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
  transition: transform var(--t-fast), box-shadow var(--t), background var(--t), border-color var(--t);
  cursor: pointer;
  white-space: nowrap;
}
.btn-sm { padding: 10px 18px; font-size: 0.88rem; }
.btn-primary {
  background: var(--grad-warm);
  color: #FFFDF9;
  box-shadow: 0 8px 24px rgba(20, 184, 166, 0.25), inset 0 1px 0 rgba(255,255,255,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(20, 184, 166, 0.4), inset 0 1px 0 rgba(255,255,255,0.4);
}
.btn-ghost {
  background: var(--surface);
  color: var(--fg);
  border: 1px solid var(--border-strong);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  padding: calc(var(--nav-h) + 60px) 0 80px;
  position: relative;
  display: flex;
  align-items: center;
}
.hero-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
  width: 100%;
}
.hero-content { max-width: 620px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--fg-muted);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 28px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.pulse-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  position: relative;
  box-shadow: 0 0 12px var(--accent);
}
.pulse-dot::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.5;
  animation: pulse 2s ease-out infinite;
}
@keyframes pulse {
  0% { transform: scale(0.8); opacity: 0.6; }
  100% { transform: scale(2); opacity: 0; }
}
.hero-title {
  font-family: 'Fraunces', serif;
  font-size: clamp(2.6rem, 7vw, 5rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin-bottom: 22px;
}
.hero-accent {
  display: block;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: gradient-shift 8s ease infinite;
  font-style: italic;
}
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.hero-subtitle {
  font-size: 1.18rem;
  color: var(--fg-muted);
  margin-bottom: 36px;
  max-width: 540px;
  line-height: 1.6;
}
.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 24px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
}
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat strong {
  font-family: 'Fraunces', serif;
  font-size: 1.85rem;
  font-weight: 600;
  background: var(--grad-warm);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat span {
  font-size: 0.78rem;
  color: var(--fg-dim);
  letter-spacing: 0.02em;
}

/* Hero visual (Warm Paper Terminal) */
.hero-visual {
  position: relative;
  height: 480px;
}
.terminal-card {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  max-width: 440px;
  background: #FFFDF9;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  overflow: hidden;
  box-shadow: var(--shadow), 0 0 0 1px rgba(255,255,255,0.5) inset;
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  font-family: 'JetBrains Mono', monospace;
  z-index: 2;
}
.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #F5EFE5;
  border-bottom: 1px solid var(--border);
}
.term-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.term-dot.red { background: #E07856; }
.term-dot.yellow { background: #E8B33C; }
.term-dot.green { background: #8A9A5B; }
.term-title {
  margin-left: auto;
  font-size: 0.78rem;
  color: var(--fg-dim);
}
.terminal-body {
  padding: 20px;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--fg);
}
.terminal-body p { margin-bottom: 4px; }
.prompt { color: var(--accent); font-weight: bold; }
.cmd { color: var(--accent-2); }
.cmd-cursor {
  display: inline-block;
  width: 8px;
  background: var(--accent);
  color: transparent;
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}
.output { color: var(--fg-muted); padding-left: 14px; }
.output-accent { color: var(--accent); }

/* Floating chips around terminal */
.floating-chip {
  position: absolute;
  padding: 10px 16px;
  background: rgba(255, 253, 249, 0.8);
  border: 1px solid var(--accent);
  border-radius: 12px;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  box-shadow: var(--shadow-sm);
  animation: float-chip 6s ease-in-out infinite;
  z-index: 3;
}
.chip-1 { top: 6%; left: -4%; animation-delay: 0s; color: var(--accent); }
.chip-2 { top: 22%; right: -6%; animation-delay: -1.5s; color: var(--accent-cool); }
.chip-3 { bottom: 22%; left: -8%; animation-delay: -3s; color: var(--accent-3); }
.chip-4 { bottom: 6%; right: -2%; animation-delay: -4.5s; color: var(--accent-2); }
.chip-5 { top: 50%; left: -10%; animation-delay: -2.2s; color: var(--accent-cool); font-size: 0.78rem; }
@keyframes float-chip {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-14px) rotate(2deg); }
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--fg-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.scroll-mouse {
  width: 22px; height: 36px;
  border: 2px solid var(--fg-dim);
  border-radius: 12px;
  position: relative;
}
.scroll-wheel {
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scroll-wheel 1.8s ease infinite;
}
@keyframes scroll-wheel {
  0% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, 14px); }
}

/* ---------- Search ---------- */
.search-section {
  padding: 32px 0;
  position: sticky;
  top: var(--nav-h);
  z-index: 50;
  background: rgba(250, 246, 240, 0.8);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  backdrop-filter: blur(20px) saturate(150%);
  border-bottom: 1px solid var(--border);
}
.search-wrap {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}
.search-icon {
  position: absolute !important;
  left: 20px; top: 50%;
  transform: translateY(-50%);
  color: var(--fg-dim);
  font-size: 1.4rem;
  pointer-events: none;
  z-index: 10;
}
.search-input {
  width: 100%;
  padding: 16px 48px 16px 50px;
  background: #FFFDF9;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--fg);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
  box-shadow: var(--shadow-sm);
}
.search-input::placeholder { color: var(--fg-dim); }
.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.15);
}
.search-clear {
  position: absolute;
  right: 14px; top: 50%;
  transform: translateY(-50%);
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--fg-muted);
  font-size: 1.2rem;
  line-height: 1;
  display: none;
  align-items: center;
  justify-content: center;
  transition: background var(--t-fast), color var(--t-fast);
}
.search-clear.visible { display: flex; }
.search-clear:hover { background: var(--accent); color: #FFFDF9; }
.search-status {
  text-align: center;
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--fg-dim);
  font-family: 'JetBrains Mono', monospace;
}
.search-empty {
  text-align: center;
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--accent-cool);
  display: none;
}
.search-empty.visible { display: block; }

/* ---------- Tool logos (Official Brand Icons) ---------- */
.tool-logo {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(58, 53, 46, 0.1);
}
.tool-logo img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

/* ---------- Cards (generic) ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.card-grid-3 {
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

/* ---------- Category block ---------- */
.category-block {
  margin-bottom: 64px;
}
.category-block:last-child { margin-bottom: 0; }
.category-title {
  font-family: 'Fraunces', serif;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: -0.01em;
}
.cat-icon {
  font-size: 1.4rem;
  width: 44px; height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

/* AI note */
.ai-note {
  padding: 18px 22px;
  background: linear-gradient(135deg, rgba(16, 152, 173, 0.08), rgba(15, 118, 110, 0.08));
  border: 1px solid rgba(16, 152, 173, 0.25);
  border-radius: var(--r);
  margin-bottom: 24px;
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
}
.ai-note strong { color: var(--fg); }
.ai-note em { color: var(--accent); font-style: normal; font-weight: 600; }

/* ---------- Tool cards ---------- */
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 24px;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: transform var(--t), border-color var(--t), background var(--t), box-shadow var(--t);
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-warm);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t);
}
.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  background: var(--surface-hover);
  box-shadow: var(--shadow);
}
.tool-card:hover::before { transform: scaleX(1); }
.tool-head {
  display: flex;
  align-items: center;
  gap: 14px;
}
.tool-meta { display: flex; flex-direction: column; gap: 6px; }
.tool-meta h4 {
  font-family: 'Fraunces', serif;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.tool-desc {
  color: var(--fg-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}
.tool-why {
  font-size: 0.85rem;
  color: var(--fg-dim);
  padding: 12px 14px;
  background: rgba(20, 184, 166, 0.05);
  border-radius: 10px;
  border-left: 2px solid var(--accent);
  line-height: 1.55;
}
.tool-why strong { color: var(--accent); display: block; margin-bottom: 4px; font-size: 0.8rem; letter-spacing: 0.05em; text-transform: uppercase; }
.tool-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  padding-top: 4px;
  transition: gap var(--t-fast), color var(--t-fast);
}
.tool-link:hover { gap: 10px; color: var(--accent-2); }

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  width: fit-content;
}
.badge-beginner {
  background: rgba(59, 201, 219, 0.15);
  color: var(--accent-2);
  border: 1px solid rgba(59, 201, 219, 0.3);
}

/* Tags */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  font-family: 'JetBrains Mono', monospace;
}
.tag-easy { background: rgba(59, 201, 219, 0.15); color: var(--accent-2); border: 1px solid rgba(59, 201, 219, 0.3); }
.tag-medium { background: rgba(15, 118, 110, 0.15); color: var(--accent-3); border: 1px solid rgba(15, 118, 110, 0.3); }
.tag-hard { background: rgba(16, 152, 173, 0.15); color: var(--accent-cool); border: 1px solid rgba(16, 152, 173, 0.3); }
.tag-time { background: var(--surface-2); color: var(--fg-muted); border: 1px solid var(--border); }

/* ---------- Resource cards ---------- */
.resource-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.resource-card::after {
  content: '';
  position: absolute;
  top: -50%; right: -30%;
  width: 300px; height: 300px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  opacity: 0;
  transition: opacity var(--t);
  pointer-events: none;
}
.resource-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.resource-card:hover::after { opacity: 0.6; }
.resource-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.resource-logo {
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(58, 53, 46, 0.1);
}
.resource-head h3 {
  font-family: 'Fraunces', serif;
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.resource-provider {
  font-size: 0.82rem;
  color: var(--fg-dim);
  font-family: 'JetBrains Mono', monospace;
}
.resource-desc {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}
.resource-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.resource-card .btn { margin-top: auto; align-self: flex-start; }

/* ---------- Roadmap timeline ---------- */
.roadmap-progress {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 600px;
  margin: 0 auto 48px;
}
.roadmap-progress-bar {
  flex: 1;
  height: 8px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.roadmap-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--grad-warm);
  border-radius: 999px;
  transition: width var(--t-slow);
  box-shadow: 0 0 12px var(--accent-glow);
}
.roadmap-progress-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--fg-muted);
  white-space: nowrap;
}

.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 12px; bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-3) 50%, var(--accent-2) 100%);
  opacity: 0.3;
}
.timeline-item {
  position: relative;
  margin-bottom: 14px;
  list-style: none;
}
.timeline-node {
  display: flex;
  align-items: center;
  gap: 18px;
  width: 100%;
  text-align: left;
  padding: 18px 22px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: background var(--t), border-color var(--t), box-shadow var(--t);
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-sm);
}
.timeline-node:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}
.timeline-node[aria-expanded="true"] {
  border-color: var(--accent);
  background: var(--surface-hover);
  box-shadow: var(--shadow);
}
.timeline-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 600;
  padding: 6px 10px;
  background: rgba(20, 184, 166, 0.1);
  border: 1px solid rgba(20, 184, 166, 0.2);
  border-radius: 8px;
}
.timeline-dot {
  position: absolute;
  left: -42px;
  top: 50%;
  transform: translateY(-50%);
  width: 14px; height: 14px;
  background: var(--bg);
  border: 2px solid var(--accent);
  border-radius: 50%;
  z-index: 2;
  transition: background var(--t), box-shadow var(--t);
}
.timeline-node[aria-expanded="true"] .timeline-dot {
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
}
.timeline-title {
  font-family: 'Fraunces', serif;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  flex: 1;
}
.timeline-chevron {
  color: var(--fg-dim);
  transition: transform var(--t), color var(--t);
  font-size: 0.9rem;
}
.timeline-node[aria-expanded="true"] .timeline-chevron {
  transform: rotate(180deg);
  color: var(--accent);
}
.timeline-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--t-slow);
}
.timeline-item.expanded .timeline-content {
  max-height: 600px;
}
.timeline-inner {
  padding: 22px 22px 26px;
  margin-top: 6px;
  background: #FFFDF9;
  border: 1px solid var(--border);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
}
.timeline-inner > p {
  color: var(--fg-muted);
  margin-bottom: 18px;
  line-height: 1.65;
}
.timeline-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.6;
}
.timeline-grid strong {
  display: block;
  color: var(--accent);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
  font-family: 'JetBrains Mono', monospace;
}
.timeline-grid a {
  color: var(--accent-2);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.timeline-grid a:hover { color: var(--accent); }

/* ---------- Project cards ---------- */
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 26px;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, var(--accent-glow), transparent 60%);
  opacity: 0;
  transition: opacity var(--t);
  pointer-events: none;
}
.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}
.project-card:hover::before { opacity: 0.2; }
.project-icon {
  font-size: 2rem;
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 6px;
}
.project-card h3 {
  font-family: 'Fraunces', serif;
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.project-desc {
  color: var(--fg-muted);
  font-size: 0.9rem;
  line-height: 1.55;
  margin-bottom: 6px;
}
.project-meta { margin-bottom: 6px; }
.project-skills, .project-stack {
  font-size: 0.82rem;
  color: var(--fg-dim);
  line-height: 1.55;
}
.project-skills strong, .project-stack strong {
  color: var(--fg-muted);
  font-weight: 600;
}

/* ---------- Top tools ---------- */
.top-tools {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}
.top-tool {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: transform var(--t-fast), border-color var(--t), background var(--t), box-shadow var(--t);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.top-tool::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--grad-warm);
  transform: scaleY(0);
  transition: transform var(--t);
  transform-origin: bottom;
}
.top-tool:hover {
  transform: translateX(4px);
  border-color: var(--accent);
  background: var(--surface-hover);
  box-shadow: var(--shadow);
}
.top-tool:hover::before { transform: scaleY(1); transform-origin: top; }
.top-tool-rank {
  font-family: 'Fraunces', serif;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--fg-dim);
  width: 36px;
  transition: color var(--t);
}
.top-tool:hover .top-tool-rank { color: var(--accent); }
.top-tool .tool-logo { width: 40px; height: 40px; font-size: 0.78rem; }
.top-tool-info h4 {
  font-family: 'Fraunces', serif;
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 2px;
}
.top-tool-info p {
  font-size: 0.82rem;
  color: var(--fg-dim);
}

/* ---------- Workshop ---------- */
.workshop-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  align-items: start;
}
.workshop-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.workshop-step {
  display: flex;
  gap: 18px;
  padding: 20px 22px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: transform var(--t-fast), border-color var(--t), background var(--t), box-shadow var(--t);
  box-shadow: var(--shadow-sm);
}
.workshop-step:hover {
  transform: translateX(6px);
  border-color: var(--accent);
  background: var(--surface-hover);
  box-shadow: var(--shadow);
}
.workshop-num {
  width: 36px; height: 36px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-warm);
  color: #FFFDF9;
  border-radius: 50%;
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px rgba(20, 184, 166, 0.25);
}
.workshop-step h4 {
  font-family: 'Fraunces', serif;
  font-size: 1.08rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.workshop-step p {
  color: var(--fg-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}
.workshop-card {
  padding: 28px;
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.08), rgba(59, 201, 219, 0.05));
  border: 1px solid rgba(20, 184, 166, 0.2);
  border-radius: var(--r-lg);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  position: sticky;
  top: calc(var(--nav-h) + 130px);
  box-shadow: var(--shadow-sm);
}
.workshop-card h3 {
  font-family: 'Fraunces', serif;
  font-size: 1.3rem;
  margin-bottom: 18px;
}
.workshop-card ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}
.workshop-card li {
  font-size: 0.92rem;
  color: var(--fg-muted);
}
.workshop-tip {
  padding: 14px;
  background: rgba(15, 118, 110, 0.1);
  border: 1px solid rgba(15, 118, 110, 0.2);
  border-radius: 10px;
  font-size: 0.85rem;
  color: var(--fg);
}

/* ---------- Tips ---------- */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}
.tip-card {
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: transform var(--t), border-color var(--t), background var(--t), box-shadow var(--t);
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-sm);
}
.tip-card:hover {
  transform: translateY(-4px) rotate(-0.5deg);
  border-color: var(--accent);
  background: var(--surface-hover);
  box-shadow: var(--shadow);
}
.tip-icon {
  font-size: 1.8rem;
  width: 52px; height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border-radius: 12px;
  border: 1px solid var(--border);
}
.tip-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ---------- Footer ---------- */
.footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--border);
  background: rgba(250, 246, 240, 0.6);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  margin-top: 60px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 1.1rem;
}
.footer-tag {
  color: var(--fg-muted);
  font-size: 0.95rem;
}
.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  color: var(--fg-muted);
  font-size: 0.92rem;
  transition: color var(--t-fast);
}
.footer-links a:hover { color: var(--accent); }
.footer-copy {
  margin-top: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--fg-dim);
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hidden by search */
.searchable.hidden { display: none !important; }
.category-block:has(.searchable:not(.hidden)) .category-title { opacity: 1; }
.category-block:has(.searchable) .category-title { transition: opacity var(--t); }
.category-block.all-hidden { display: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-visual {
    height: 380px;
    order: -1;
  }
  .terminal-card { max-width: 380px; }
  .workshop-grid {
    grid-template-columns: 1fr;
  }
  .workshop-card { position: static; }
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    background: rgba(250, 246, 240, 0.95);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    gap: 4px;
    transform: translateY(-120%);
    transition: transform var(--t);
    align-items: stretch;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 12px 16px; }
  .nav-toggle { display: flex; }
}

@media (max-width: 640px) {
  .section { padding: 70px 0; }
  .container { padding: 0 18px; }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 20px;
  }
  .stat strong { font-size: 1.5rem; }
  .hero-visual { height: 320px; }
  .terminal-card { max-width: 100%; }
  .floating-chip { font-size: 0.75rem; padding: 8px 12px; }
  .chip-5 { display: none; }
  .timeline-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 18px; }
  .timeline-dot { left: -36px; }
  .timeline-node { padding: 14px 16px; gap: 12px; }
  .search-section { position: relative; top: 0; }
  .section-head { margin-bottom: 40px; }
  .category-block { margin-bottom: 48px; }
  .footer-links { gap: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* Accessibility focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}