/* ═══════════════════════════════════════════════════════════
   oh-my-study-with-me — Landing Page Styles
   Design: Deep ocean / terminal aesthetic with electric teal
═══════════════════════════════════════════════════════════ */

/* ─────────────────────────────────
   Design Tokens
───────────────────────────────── */
:root {
  /* Backgrounds */
  --bg-base:     #080f14;
  --bg-surface:  #0d1a24;
  --bg-raised:   #132030;
  --bg-glass:    rgba(13, 26, 36, 0.65);
  --bg-glass-hover: rgba(19, 32, 48, 0.85);
  --bg-border:   rgba(0, 217, 192, 0.12);
  --bg-border-hover: rgba(0, 217, 192, 0.28);

  /* Accents */
  --teal:        #00d9c0;
  --teal-dim:    rgba(0, 217, 192, 0.15);
  --teal-glow:   rgba(0, 217, 192, 0.08);
  --amber:       #f0a500;
  --amber-dim:   rgba(240, 165, 0, 0.15);
  --violet:      #9b6dff;
  --violet-dim:  rgba(155, 109, 255, 0.15);

  /* Text */
  --text-primary:   #e8f4f0;
  --text-secondary: #8aadbe;
  --text-muted:     #4a6878;
  --text-code:      #00d9c0;

  /* Typography */
  --font-display: 'Plus Jakarta Sans', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Spacing */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Layout */
  --container: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Motion */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-snap: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ─────────────────────────────────
   Reset
───────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px; /* nav height (64px) + 8px buffer */
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  word-break: keep-all;
  overflow-wrap: break-word;
}

ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

/* ─────────────────────────────────
   Layout Utilities
───────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* Glass card */
.glass-card {
  background: var(--bg-glass);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color 0.3s var(--ease-out), background 0.3s;
}
.glass-card:hover {
  border-color: var(--bg-border-hover);
  background: var(--bg-glass-hover);
}

/* ─────────────────────────────────
   Buttons
───────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 13px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s var(--ease-snap), box-shadow 0.2s, background 0.2s;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.06);
  opacity: 0;
  transition: opacity 0.2s;
}
.btn:hover::before { opacity: 1; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--teal);
  color: var(--bg-base);
  font-weight: 600;
  box-shadow: 0 0 24px rgba(0,217,192,.3), 0 4px 12px rgba(0,217,192,.2);
}
.btn--primary:hover {
  box-shadow: 0 0 40px rgba(0,217,192,.45), 0 8px 24px rgba(0,217,192,.3);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--bg-border);
}
.btn--outline:hover {
  border-color: var(--teal);
  color: var(--teal);
  box-shadow: 0 0 16px rgba(0,217,192,.12);
}

/* ─────────────────────────────────
   Badges
───────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  white-space: nowrap;
}
.badge--teal   { background: var(--teal-dim);   color: var(--teal);   border: 1px solid rgba(0,217,192,.25); }
.badge--amber  { background: var(--amber-dim);  color: var(--amber);  border: 1px solid rgba(240,165,0,.25); }
.badge--violet { background: var(--violet-dim); color: var(--violet); border: 1px solid rgba(155,109,255,.25); }
.badge--muted  { background: rgba(74,104,120,.2); color: var(--text-secondary); border: 1px solid rgba(74,104,120,.3); }

/* ─────────────────────────────────
   Code Blocks
───────────────────────────────── */
.code-block {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--bg-base);
  border: 1px solid rgba(0,217,192,.18);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  margin-top: var(--space-3);
  overflow: hidden;
}
.code-block__code {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--teal);
  flex: 1;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
}
.code-block__code::-webkit-scrollbar { display: none; }
.code-block--sm .code-block__code { font-size: 13px; }

.code-block__copy {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(0,217,192,.1);
  border: 1px solid rgba(0,217,192,.2);
  border-radius: var(--radius-sm);
  color: var(--teal);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  padding: 5px 10px;
  cursor: pointer;
  flex-shrink: 0;
  transition: background .2s, transform .15s var(--ease-snap);
}
.code-block__copy:hover  { background: rgba(0,217,192,.2); transform: scale(1.04); }
.code-block__copy:active { transform: scale(.97); }
.code-block__copy.copied { background: rgba(0,217,192,.25); color: #fff; }

/* ─────────────────────────────────
   Section Scaffold
───────────────────────────────── */
.section { padding: var(--space-24) 0; position: relative; }

.section__header { text-align: center; margin-bottom: var(--space-16); }

.section__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: var(--space-3);
}
.section__title {
  font-family: var(--font-display);
  font-size: clamp(28px,4vw,42px);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -.02em;
}
.section__subtitle {
  margin-top: var(--space-4);
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  text-wrap: pretty;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ─────────────────────────────────
   Navigation
───────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100; height: 64px;
  transition: background .3s, border-color .3s, box-shadow .3s;
}
.nav.scrolled {
  background: rgba(8,15,20,.92);
  border-bottom: 1px solid var(--bg-border);
  box-shadow: 0 4px 32px rgba(0,0,0,.4);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav__inner {
  display: flex; align-items: center;
  height: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
  gap: var(--space-8);
}

.nav__logo {
  display: flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700; font-size: 18px;
  color: var(--text-primary);
  flex-shrink: 0;
  transition: color .2s;
}
.nav__logo:hover { color: var(--teal); }
.nav__logo-icon { font-size: 20px; }
.nav__logo-text { letter-spacing: .06em; color: var(--teal); }

.nav__links {
  display: flex; align-items: center; gap: var(--space-6);
  margin-left: auto;
}
.nav__link {
  font-size: 14px; font-weight: 500;
  color: var(--text-secondary);
  transition: color .2s;
  position: relative;
  padding-bottom: 2px;
}
.nav__link::after {
  content: ''; position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--teal);
  transition: width .25s var(--ease-out);
}
.nav__link:hover { color: var(--text-primary); }
.nav__link:hover::after { width: 100%; }

.nav__github {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  font-size: 14px; font-weight: 500;
  color: var(--text-secondary);
  transition: border-color .2s, color .2s, background .2s;
  flex-shrink: 0;
}
.nav__github:hover {
  border-color: var(--teal);
  color: var(--teal);
  background: var(--teal-dim);
}

.nav__hamburger {
  display: none; flex-direction: column;
  justify-content: center; gap: 5px;
  width: 36px; height: 36px;
  background: transparent; border: none; cursor: pointer;
  padding: 4px; margin-left: auto;
}
.nav__hamburger span {
  display: block; height: 1.5px;
  background: var(--text-secondary); border-radius: 2px;
  transition: transform .3s var(--ease-out), opacity .3s, width .3s;
}
.nav__hamburger span:nth-child(3) { width: 60%; }
.nav__hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.open span:nth-child(3) { width: 100%; transform: translateY(-6.5px) rotate(-45deg); }

/* ─────────────────────────────────
   Hero
───────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px var(--space-6) var(--space-24);
  overflow: hidden;
}

.hero__bg { position: absolute; inset: 0; pointer-events: none; }

.hero__dot-grid {
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(0,217,192,.18) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 80%);
}

.hero__glow {
  position: absolute; top: -10%; left: 50%;
  transform: translateX(-50%);
  width: 900px; height: 500px;
  background: radial-gradient(ellipse at center, rgba(0,217,192,.09) 0%, transparent 70%);
}
.hero__glow--amber {
  top: 20%; left: 65%; width: 600px; height: 400px;
  background: radial-gradient(ellipse at center, rgba(240,165,0,.05) 0%, transparent 70%);
}

.hero__content {
  position: relative; z-index: 1;
  max-width: 820px; width: 100%;
  text-align: center;
  display: flex; flex-direction: column;
  align-items: center; gap: var(--space-6);
}

.hero__badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 6px 16px;
  background: rgba(0,217,192,.06);
  border: 1px solid rgba(0,217,192,.2);
  border-radius: 100px;
  font-family: var(--font-mono); font-size: 13px; color: var(--teal);
  animation: fadeDown .7s var(--ease-out) both;
}
.hero__badge-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 6px var(--teal);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,100% { box-shadow: 0 0 6px var(--teal); }
  50% { box-shadow: 0 0 14px var(--teal), 0 0 24px rgba(0,217,192,.4); }
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(36px,6vw,68px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.03em;
  color: var(--text-primary);
  display: flex; flex-direction: column; gap: .1em;
  animation: fadeDown .7s var(--ease-out) .1s both;
}
.hero__phrase { white-space: nowrap; }

.hero__gradient-text {
  background: linear-gradient(90deg, var(--teal) 0%, var(--amber) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: clamp(15px,2vw,17px);
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 600px;
  animation: fadeDown .7s var(--ease-out) .2s both;
}

.hero__ctas {
  display: flex; align-items: center;
  gap: var(--space-3); flex-wrap: wrap;
  justify-content: center;
  animation: fadeDown .7s var(--ease-out) .3s both;
}

/* Terminal */
.terminal {
  width: 100%; max-width: 580px;
  background: rgba(6,12,16,.92);
  border: 1px solid rgba(0,217,192,.2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0,217,192,.05),
    0 24px 64px rgba(0,0,0,.6),
    0 0 80px rgba(0,217,192,.06);
  animation: fadeDown .8s var(--ease-out) .45s both;
}

.terminal__header {
  display: flex; align-items: center; gap: var(--space-2);
  padding: 12px 16px;
  background: rgba(13,26,36,.6);
  border-bottom: 1px solid rgba(0,217,192,.1);
}
.terminal__dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.terminal__dot--red    { background: #ff5f57; }
.terminal__dot--yellow { background: #ffbd2e; }
.terminal__dot--green  { background: #28c840; }
.terminal__title {
  margin-left: var(--space-2);
  font-family: var(--font-mono); font-size: 12px;
  color: var(--text-muted); letter-spacing: .04em;
}

.terminal__body {
  padding: var(--space-5);
  display: flex; flex-direction: column; gap: var(--space-3);
}

.terminal__line {
  display: flex; align-items: baseline; gap: var(--space-2);
  font-family: var(--font-mono); font-size: 14px;
  opacity: 0; transform: translateX(-8px);
  transition: opacity .4s var(--ease-out), transform .4s var(--ease-out);
}
.terminal__line.visible { opacity: 1; transform: translateX(0); }

.terminal__prompt { color: var(--teal); flex-shrink: 0; }
.terminal__cmd { color: var(--text-primary); }

.terminal__cursor {
  display: inline-block; width: 2px; height: 14px;
  background: var(--teal); vertical-align: middle;
  animation: blink 1.1s step-end infinite;
}
@keyframes blink {
  0%,100% { opacity: 1; }
  50% { opacity: 0; }
}

.terminal__icon { font-size: 14px; flex-shrink: 0; line-height: 1; }
.terminal__output-text { color: var(--text-secondary); font-size: 13px; word-break: break-word; min-width: 0; }
.terminal__output-text--success { color: var(--teal); }

.hero__scroll-hint {
  position: absolute; bottom: var(--space-8); left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: var(--space-2);
  color: var(--text-muted);
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: .12em; text-transform: uppercase;
  animation: fadeDown 1s var(--ease-out) 1.2s both;
}
.hero__scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--teal), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 0; }
  30%  { transform: scaleY(1); opacity: 1; }
  70%  { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─────────────────────────────────
   Philosophy
───────────────────────────────── */
.philosophy__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.philosophy__card {
  padding: var(--space-8);
  position: relative; overflow: hidden;
  transition: transform .3s var(--ease-snap), box-shadow .3s;
}
.philosophy__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,.4);
}

.philosophy__card-accent {
  position: absolute; top: 0; left: 0;
  width: 3px; height: 60%;
  border-radius: 0 2px 2px 0;
}
.philosophy__card-accent--teal   { background: linear-gradient(to bottom, var(--teal), transparent); }
.philosophy__card-accent--amber  { background: linear-gradient(to bottom, var(--amber), transparent); }
.philosophy__card-accent--violet { background: linear-gradient(to bottom, var(--violet), transparent); }

.philosophy__person {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.philosophy__avatar { font-size: 24px; flex-shrink: 0; }
.philosophy__name {
  font-family: var(--font-display);
  font-size: 14px; font-weight: 700;
  color: var(--amber); letter-spacing: .06em; text-transform: uppercase;
}
.philosophy__quote {
  font-family: var(--font-display);
  font-size: 18px; font-weight: 700;
  color: var(--teal); line-height: 1.3;
  margin-bottom: var(--space-4); font-style: normal;
}
.philosophy__desc {
  font-size: 14px; color: var(--text-secondary); line-height: 1.7;
  text-wrap: pretty;
}

/* ─────────────────────────────────
   Features / Bento
───────────────────────────────── */
.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.bento__card {
  position: relative;
  background: var(--bg-glass);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  padding: var(--space-8); overflow: hidden;
  transition: border-color .3s, transform .3s var(--ease-snap), box-shadow .3s;
}
.bento__card:hover {
  border-color: var(--bg-border-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,.4);
}

.bento__card--wide { grid-column: span 2; }
.bento__card--wide .bento__card-inner {
  display: flex; gap: var(--space-8); align-items: flex-start;
}
.bento__card--wide .bento__icon { flex-shrink: 0; }
.bento__card--tall { grid-row: span 2; }

.bento__card-glow {
  position: absolute; top: -40px; right: -40px;
  width: 200px; height: 200px; border-radius: 50%;
  pointer-events: none; opacity: 0;
  transition: opacity .4s var(--ease-out);
}
.bento__card:hover .bento__card-glow { opacity: 1; }
.bento__card-glow--teal   { background: radial-gradient(circle, rgba(0,217,192,.12) 0%, transparent 70%); }
.bento__card-glow--amber  { background: radial-gradient(circle, rgba(240,165,0,.12) 0%, transparent 70%); }
.bento__card-glow--violet { background: radial-gradient(circle, rgba(155,109,255,.12) 0%, transparent 70%); }

.bento__card-inner { position: relative; z-index: 1; min-width: 0; }

.bento__icon { font-size: 32px; margin-bottom: var(--space-4); display: block; }
.bento__title {
  font-family: var(--font-display);
  font-size: 18px; font-weight: 700;
  color: var(--text-primary); letter-spacing: -.01em;
  margin-bottom: var(--space-3);
}
.bento__desc {
  font-size: 15px; color: var(--text-secondary);
  line-height: 1.7; margin-bottom: var(--space-4);
}
.bento__desc--secondary { color: var(--text-muted); font-size: 14px; }
.bento__badges, .bento__sub-badges {
  display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4);
}
.bento__sub-badges { margin-bottom: var(--space-3); }

/* ─────────────────────────────────
   Workflow
───────────────────────────────── */
.flow {
  display: flex; align-items: center;
  gap: 0; overflow-x: auto;
  padding: var(--space-8) 0;
  scrollbar-width: none;
}
.flow::-webkit-scrollbar { display: none; }

.flow__step {
  display: flex; flex-direction: column;
  align-items: center; gap: var(--space-4);
  flex-shrink: 0; min-width: 100px;
}

.flow__node {
  position: relative;
  width: 72px; height: 72px; border-radius: 20px;
  background: var(--bg-raised);
  border: 1px solid rgba(0,217,192,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  transition: border-color .3s, transform .3s var(--ease-snap), box-shadow .3s;
  cursor: default;
}
.flow__node:hover {
  border-color: var(--teal); transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 24px rgba(0,217,192,.2);
}
.flow__node--amber { border-color: rgba(240,165,0,.25); }
.flow__node--amber:hover { border-color: var(--amber); box-shadow: 0 8px 24px rgba(240,165,0,.2); }
.flow__node--violet { border-color: rgba(155,109,255,.25); }
.flow__node--violet:hover { border-color: var(--violet); box-shadow: 0 8px 24px rgba(155,109,255,.2); }

.flow__node-num {
  position: absolute; top: -8px; right: -8px;
  width: 20px; height: 20px;
  background: var(--bg-base);
  border: 1px solid rgba(0,217,192,.3);
  border-radius: 50%;
  font-family: var(--font-mono); font-size: 10px; color: var(--teal);
  display: flex; align-items: center; justify-content: center;
}

.flow__info { text-align: center; }
.flow__name {
  font-family: var(--font-display);
  font-size: 14px; font-weight: 700;
  color: var(--text-primary); margin-bottom: 2px;
}
.flow__desc { font-size: 12px; color: var(--text-muted); white-space: nowrap; }

.flow__connector {
  flex: 1; min-width: 40px; max-width: 80px;
  height: 20px; flex-shrink: 0;
  margin-bottom: var(--space-10);
}
.flow__connector svg { width: 100%; height: 100%; }

.workflow__note {
  display: flex; align-items: flex-start;
  gap: var(--space-4); padding: var(--space-6) var(--space-8);
  margin-top: var(--space-10);
}
.workflow__note-icon { font-size: 20px; flex-shrink: 0; margin-top: 2px; }
.workflow__note p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; text-wrap: pretty; }
.workflow__note strong {
  color: var(--teal); font-family: var(--font-mono);
  font-size: 13px; font-weight: 400;
}

/* ─────────────────────────────────
   Sources Table
───────────────────────────────── */
.sources__table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--bg-border);
}
.sources__table {
  width: 100%; border-collapse: collapse;
  background: var(--bg-glass);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
}
.sources__th {
  padding: var(--space-4) var(--space-6);
  text-align: center;
  font-family: var(--font-display);
  font-size: 14px; font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--bg-border);
  background: rgba(13,26,36,.5); white-space: nowrap;
}
.sources__th--source { text-align: left; width: 40%; }

.sources__row {
  border-bottom: 1px solid rgba(74,104,120,.12);
  transition: background .2s;
}
.sources__row:last-child { border-bottom: none; }
.sources__row:hover { background: rgba(0,217,192,.03); }

.sources__td { padding: var(--space-4) var(--space-6); text-align: center; }
.sources__td--label {
  text-align: left; display: flex; align-items: center; gap: var(--space-3);
  font-size: 14px; font-weight: 500; color: var(--text-primary);
}
.sources__source-icon { font-size: 18px; flex-shrink: 0; }

.sources__check { font-family: var(--font-mono); font-size: 16px; font-weight: 700; }
.sources__check--yes { color: var(--teal); text-shadow: 0 0 8px rgba(0,217,192,.4); }
.sources__check--no  { color: var(--text-muted); }

/* ─────────────────────────────────
   Metacognition
───────────────────────────────── */
.metacog__dashboard { overflow: hidden; }

.metacog__dashboard-header {
  display: flex; align-items: flex-start;
  justify-content: space-between;
  padding: var(--space-6) var(--space-8);
  border-bottom: 1px solid var(--bg-border);
  gap: var(--space-6); flex-wrap: wrap;
}
.metacog__dashboard-title {
  font-family: var(--font-mono); font-size: 13px; color: var(--text-secondary);
  white-space: nowrap;
}
.metacog__legend {
  display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap;
}
.metacog__legend-item {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--text-muted); font-family: var(--font-mono);
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}
.status-dot--mastered { background: #3b82f6; }
.status-dot--good     { background: #22c55e; }
.status-dot--avg      { background: #eab308; }
.status-dot--weak     { background: #ef4444; }
.status-dot--none     { background: var(--text-muted); }

.metacog__table-wrap { overflow-x: auto; }
.metacog__table { width: 100%; border-collapse: collapse; min-width: 580px; }

.metacog__table thead tr th {
  padding: var(--space-3) var(--space-6);
  text-align: left;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--bg-border);
  background: rgba(8,15,20,.3);
}
.metacog__table tbody tr {
  border-bottom: 1px solid rgba(74,104,120,.1);
  transition: background .2s;
}
.metacog__table tbody tr:last-child { border-bottom: none; }
.metacog__table tbody tr:hover { background: rgba(0,217,192,.03); }
.metacog__table tbody td {
  padding: var(--space-4) var(--space-6);
  font-size: 14px; color: var(--text-secondary);
}
.metacog__concept {
  font-family: var(--font-mono); font-size: 14px;
  color: var(--text-primary) !important; font-weight: 400;
}
.metacog__source { font-size: 13px !important; color: var(--text-muted) !important; }

.metacog__accuracy { font-family: var(--font-mono); font-size: 14px; font-weight: 700; }
.metacog__accuracy--high { color: var(--teal); }
.metacog__accuracy--mid  { color: var(--amber); }
.metacog__accuracy--low  { color: #ef4444; }
.metacog__accuracy--none { color: var(--text-muted); }

.status-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 100px;
  font-family: var(--font-mono); font-size: 12px; white-space: nowrap;
}
.status-badge--mastered { background: rgba(59,130,246,.15);  color: #93c5fd; border: 1px solid rgba(59,130,246,.25); }
.status-badge--good     { background: rgba(34,197,94,.15);   color: #86efac; border: 1px solid rgba(34,197,94,.25); }
.status-badge--avg      { background: rgba(234,179,8,.15);   color: #fde047; border: 1px solid rgba(234,179,8,.25); }
.status-badge--weak     { background: rgba(239,68,68,.15);   color: #fca5a5; border: 1px solid rgba(239,68,68,.25); }
.status-badge--none     { background: rgba(74,104,120,.15);  color: var(--text-muted); border: 1px solid rgba(74,104,120,.25); }

/* ─────────────────────────────────
   Installation
───────────────────────────────── */
.install__steps {
  display: flex; align-items: stretch; gap: var(--space-5);
  max-width: 820px; margin: 0 auto;
}
.install__step {
  flex: 1; padding: var(--space-8);
  position: relative; overflow: hidden;
}
.install__step::before {
  content: ''; position: absolute;
  top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--teal), transparent);
}
.install__step-num {
  font-family: var(--font-mono); font-size: 12px;
  color: var(--teal); letter-spacing: .1em;
  margin-bottom: var(--space-4);
}
.install__step-title {
  font-family: var(--font-display); font-size: 18px; font-weight: 700;
  color: var(--text-primary); margin-bottom: var(--space-2);
}
.install__step-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: var(--space-2); }

.install__arrow {
  width: 40px; flex-shrink: 0;
  display: flex; align-items: center; margin-bottom: var(--space-4);
}
.install__arrow svg { width: 32px; height: 32px; }

.install__note {
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-2); margin-top: var(--space-8);
  font-size: 15px; color: var(--text-muted); font-family: var(--font-mono);
}
.install__note-icon { font-size: 16px; }

/* ─────────────────────────────────
   Invocation
───────────────────────────────── */
.invocation__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5);
}
.invocation__card {
  padding: var(--space-6);
  transition: transform .3s var(--ease-snap), box-shadow .3s;
}
.invocation__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,0,0,.4);
}
.invocation__num {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--text-muted); letter-spacing: .1em; margin-bottom: var(--space-4);
}
.invocation__method {
  font-family: var(--font-display); font-size: 15px; font-weight: 700;
  color: var(--text-primary); margin-bottom: var(--space-4);
}
.invocation__desc {
  font-size: 14px; color: var(--text-muted); margin-top: var(--space-3); line-height: 1.6;
}
.invocation__tag { margin-top: var(--space-4); }

/* ─────────────────────────────────
   Footer
───────────────────────────────── */
.footer {
  position: relative;
  background: var(--bg-surface);
  border-top: 1px solid var(--bg-border);
  padding-top: var(--space-16); overflow: hidden;
}
.footer__glow {
  position: absolute; top: -100px; left: 50%; transform: translateX(-50%);
  width: 600px; height: 300px;
  background: radial-gradient(ellipse at center, rgba(0,217,192,.04) 0%, transparent 70%);
  pointer-events: none;
}
.footer__inner {
  display: grid; grid-template-columns: 1fr auto 1fr;
  align-items: start; gap: var(--space-10);
  padding-bottom: var(--space-10);
}
.footer__brand { display: flex; flex-direction: column; gap: var(--space-3); }
.footer__logo {
  display: flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-display); font-size: 16px; font-weight: 700;
  color: var(--text-primary);
}
.footer__motto { font-size: 14px; color: var(--text-muted); line-height: 1.6; max-width: 300px; text-wrap: balance; }

.footer__links { display: flex; flex-direction: column; align-items: center; gap: var(--space-4); }
.footer__link {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: 14px; font-weight: 500; color: var(--text-secondary);
  transition: color .2s; padding: 4px 0;
}
.footer__link:hover { color: var(--teal); }

.footer__credit { text-align: right; font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.footer__author { color: var(--text-secondary); }
.footer__author-link { color: var(--teal); transition: color .2s; }
.footer__author-link:hover { color: var(--amber); }

.footer__bottom {
  border-top: 1px solid rgba(74,104,120,.15);
  padding: var(--space-5) var(--space-6);
  text-align: center; font-size: 13px;
  color: var(--text-muted); font-family: var(--font-mono);
}

/* ─────────────────────────────────
   Toast
───────────────────────────────── */
.toast {
  position: fixed; bottom: var(--space-8); left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--teal); color: var(--bg-base);
  font-family: var(--font-mono); font-size: 14px; font-weight: 600;
  padding: 10px 20px; border-radius: 100px;
  opacity: 0; pointer-events: none;
  transition: opacity .25s var(--ease-out), transform .25s var(--ease-snap);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(0,217,192,.35);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ─────────────────────────────────
   Responsive — Tablet
───────────────────────────────── */
@media (max-width: 960px) {
  .philosophy__grid { grid-template-columns: 1fr; }

  .bento { grid-template-columns: repeat(2,1fr); }
  .bento__card--wide {
    grid-column: span 2;
  }
  .bento__card--wide .bento__card-inner { flex-direction: column; gap: var(--space-4); }
  .bento__card--tall { grid-row: span 1; }

  .invocation__grid { grid-template-columns: repeat(2,1fr); }

  .footer__inner { grid-template-columns: 1fr 1fr; grid-template-rows: auto auto; }
  .footer__credit { grid-column: 1 / -1; text-align: center; }
  .footer__links { flex-direction: row; }
}

/* ─────────────────────────────────
   Responsive — Mobile
───────────────────────────────── */
@media (max-width: 640px) {
  .section { padding: var(--space-16) 0; }
  .section__header { margin-bottom: var(--space-10); }

  /* Nav mobile */
  .nav__links {
    position: fixed; top: 64px; left: 0; right: 0;
    background: rgba(8,15,20,.97);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--bg-border);
    flex-direction: column; align-items: stretch; gap: 0;
    padding: var(--space-4) 0;
    transform: translateY(-110%);
    transition: transform .35s var(--ease-out);
    margin-left: 0;
  }
  .nav__links.open { transform: translateY(0); }
  .nav__links li { border-bottom: 1px solid rgba(74,104,120,.15); }
  .nav__links li:last-child { border-bottom: none; }
  .nav__link { display: block; padding: 14px var(--space-6); font-size: 15px; }
  .nav__link::after { display: none; }
  .nav__github { display: none; }
  .nav__hamburger { display: flex; }

  /* Hero */
  .hero { padding: 100px var(--space-5) var(--space-16); }
  .hero__sub br { display: none; }
  .hero__ctas { flex-direction: column; width: 100%; }
  .hero__ctas .btn { width: 100%; justify-content: center; }

  /* Philosophy */
  .philosophy__grid { gap: var(--space-4); }
  .philosophy__card { padding: var(--space-6); }

  /* Bento */
  .bento { grid-template-columns: 1fr; gap: var(--space-4); }
  .bento__card--wide { grid-column: span 1; }
  .bento__card--tall { grid-row: span 1; }

  /* Flow — vertical */
  .flow { flex-direction: column; align-items: stretch; gap: 0; overflow-x: visible; }
  .flow__step {
    flex-direction: row; align-items: center;
    gap: var(--space-4); min-width: auto; padding: var(--space-3) 0;
  }
  .flow__info { text-align: left; }
  .flow__desc { white-space: normal; }
  .flow__connector {
    width: 1px; height: 28px; min-width: 1px; max-width: 1px;
    margin: 0 0 0 35px; flex: none; position: relative;
  }
  .flow__connector svg { display: none; }
  .flow__connector::before {
    content: ''; display: block; width: 1px; height: 100%;
    background: linear-gradient(to bottom, var(--teal), rgba(0,217,192,.2));
  }

  /* Invocation */
  .invocation__grid { grid-template-columns: 1fr; gap: var(--space-4); }

  /* Install */
  .install__steps { flex-direction: column; gap: var(--space-4); }
  .install__arrow { justify-content: center; transform: rotate(90deg); margin: 0 auto; width: auto; }

  /* Footer */
  .footer__inner { grid-template-columns: 1fr; text-align: center; gap: var(--space-8); }
  .footer__brand { align-items: center; }
  .footer__motto { text-align: center; max-width: 100%; }
  .footer__credit { text-align: center; }
  .footer__links { flex-direction: row; justify-content: center; }

  /* Tables */
  .metacog__dashboard-header { flex-direction: column; gap: var(--space-4); padding: var(--space-5); }
  .metacog__legend { gap: var(--space-3); }
}

/* ─────────────────────────────────
   Accessibility
───────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  .terminal__line { opacity: 1; transform: none; }
}

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 4px;
}