/* ─────────────────────────────────────────
   Meso IQ — styles.css
   Theme: Prussian Blue + Warm Amber
   ───────────────────────────────────────── */

/* ─── TOKENS: DARK MODE (default) ─── */
:root {
  --ink:         #0e1e2e;
  --ink-deep:    #091828;
  --surface:     #142438;
  --surface-2:   #1a2c44;
  --surface-3:   #203450;

  --gold:        #d4864a;
  --gold-light:  #e8a870;
  --gold-dim:    rgba(212, 134, 74, 0.14);
  --gold-border: rgba(212, 134, 74, 0.28);

  --white:       #dce8f0;
  --white-dim:   rgba(220, 232, 240, 0.85);
  --white-faint: rgba(220, 232, 240, 0.09);

  --accent:      #4a90d9;
  --accent-dim:  rgba(74, 144, 217, 0.12);

  --green: #5bbf8a;
  --red:   #d96b6b;

  --font-mono:  'DM Mono', 'Courier New', monospace;
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans:  'Outfit', system-ui, sans-serif;

  --max-width: 1200px;
  --radius:    3px;

  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
}

/* ─── TOKENS: LIGHT MODE (OS preference) ─── */
@media (prefers-color-scheme: light) {
  :root {
    --ink:         #f5f0e8;
    --ink-deep:    #ede7dc;
    --surface:     #faf7f2;
    --surface-2:   #f0ebe1;
    --surface-3:   #e8e1d5;

    --gold:        #b05e22;
    --gold-light:  #c87838;
    --gold-dim:    rgba(176, 94, 34, 0.1);
    --gold-border: rgba(176, 94, 34, 0.28);

    --white:       #0e1e2e;
    --white-dim:   rgba(14, 30, 46, 0.52);
    --white-faint: rgba(14, 30, 46, 0.09);

    --accent:      #2a6ab0;
    --accent-dim:  rgba(42, 106, 176, 0.12);

    --green: #2e7a50;
    --red:   #b84040;
  }
}

/* ─── TOKENS: MANUAL TOGGLE (data-theme) ─── */
[data-theme="dark"] {
  --ink:         #0e1e2e;
  --ink-deep:    #091828;
  --surface:     #142438;
  --surface-2:   #1a2c44;
  --surface-3:   #203450;
  --gold:        #d4864a;
  --gold-light:  #e8a870;
  --gold-dim:    rgba(212, 134, 74, 0.14);
  --gold-border: rgba(212, 134, 74, 0.28);
  --white:       #dce8f0;
  --white-dim:   rgba(220, 232, 240, 0.85);
  --white-faint: rgba(220, 232, 240, 0.09);
  --accent:      #4a90d9;
  --accent-dim:  rgba(74, 144, 217, 0.12);
  --green: #5bbf8a;
  --red:   #d96b6b;
}

[data-theme="light"] {
--ink:         #f5f0e8;
  --ink-deep:    #ede7dc;
  --surface:     #faf7f2;
  --surface-2:   #f0ebe1;
  --surface-3:   #e8e1d5;
  --gold:        #b05e22;
  --gold-light:  #c87838;
  --gold-dim:    rgba(176, 94, 34, 0.1);
  --gold-border: rgba(176, 94, 34, 0.28);
  --white:       #0e1e2e;
  --white-dim:   rgba(14, 30, 46, 0.52);
  --white-faint: rgba(14, 30, 46, 0.09);
  --accent:      #2a6ab0;
  --accent-dim:  rgba(42, 106, 176, 0.12);
  --green: #2e7a50;
  --red:   #b84040;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  color-scheme: light dark;
}

body {
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }

button { cursor: pointer; font-family: inherit; }

a { color: inherit; }

ul, ol { list-style: none; }

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--ink-deep); }
::-webkit-scrollbar-thumb { background: var(--gold-border); border-radius: 2px; }

/* ─── FOCUS VISIBLE ─── */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: var(--radius);
}

/* ─── SKIP LINK ─── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--gold);
  color: var(--ink-deep);
  padding: 8px 16px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-decoration: none;
  z-index: 9999;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 16px; }

/* ─── LAYOUT HELPERS ─── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 48px;
}

.section { padding: 120px 0; position: relative; }

.section-header { margin-bottom: 72px; }

/* ─── TYPOGRAPHY ─── */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 300;
  line-height: 1.15;
}

.tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(38px, 5vw, 62px);
  color: var(--white);
  margin-bottom: 24px;
}
.section-title em { font-style: italic; color: var(--gold-light); }

.lead {
  font-size: 18px;
  color: var(--white-dim);
  max-width: 600px;
  line-height: 1.75;
}

/* ─── BUTTONS ─── */
.btn-primary {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ink-deep);
  background: var(--gold);
  padding: 14px 36px;
  border-radius: var(--radius);
  border: none;
  text-decoration: none;
  transition: background var(--transition-base), transform var(--transition-fast);
}
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white-dim);
  background: transparent;
  padding: 13px 36px;
  border-radius: var(--radius);
  border: 1px solid var(--white-faint);
  text-decoration: none;
  transition: color var(--transition-base), border-color var(--transition-base);
}
.btn-secondary:hover { color: var(--white); border-color: rgba(220, 232, 240, 0.35); }

/* ─── DIVIDER ─── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-border), transparent);
}

/* ─── NAV ─── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 72px;
  background: var(--ink-deep);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--white-faint);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  background: none;
  border: none;
  padding: 0;
}

.logo-image {
  height: 25px;
  width: auto;
  display: block;
}

[data-theme="dark"] .logo-image {
  content: url('img/logo-dark.png');
}

[data-theme="light"] .logo-image {
  content: url('img/logo-light.png');
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  cursor: pointer;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white-dim);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: none;
  background: none;
  transition: color var(--transition-base), background var(--transition-base);
}
.nav-links a:hover { color: var(--white); background: var(--white-faint); }
.nav-links a[aria-current="page"] { color: var(--gold); }

.nav-cta { display: flex; align-items: center; gap: 12px; }

.btn-nav-login {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white-dim);
  background: transparent;
  padding: 8px 20px;
  border: 1px solid var(--white-faint);
  border-radius: var(--radius);
  transition: color var(--transition-base), border-color var(--transition-base);
}
.btn-nav-login:hover { color: var(--white); border-color: var(--white-dim); }

.btn-nav-demo {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ink-deep);
  background: var(--gold);
  padding: 9px 22px;
  border-radius: var(--radius);
  border: none;
  transition: background var(--transition-base), transform var(--transition-fast);
}
.btn-nav-demo:hover { background: var(--gold-light); transform: translateY(-1px); }

/* ─── THEME TOGGLE ─── */
.theme-toggle {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--white-faint);
  background: transparent;
  color: var(--white-dim);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: color var(--transition-base), border-color var(--transition-base), background var(--transition-base);
  flex-shrink: 0;
  font-size: 15px;
  line-height: 1;
}
.theme-toggle:hover {
  color: var(--white);
  border-color: var(--gold-border);
  background: var(--gold-dim);
}
.theme-toggle:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.theme-toggle .icon-moon { display: block; }
.theme-toggle .icon-sun  { display: none;  }
[data-theme="light"] .theme-toggle .icon-moon { display: none;  }
[data-theme="light"] .theme-toggle .icon-sun  { display: block; }

/* ─── PAGE ROUTING ─── */
.page { display: none; }
.page.active { display: block; }

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(212, 134, 74, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 20% 80%, rgba(74, 144, 217, 0.07) 0%, transparent 50%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  pointer-events: none;
}

.hero-grid {
  position: absolute; inset: 0;
  opacity: 0.03;
  background-image:
    linear-gradient(var(--white) 1px, transparent 1px),
    linear-gradient(90deg, var(--white) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 0 100px;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 36px;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s forwards;
}
.hero-eyebrow-line { width: 40px; height: 1px; background: var(--gold); }
.hero-eyebrow-text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.hero-headline {
  font-size: clamp(52px, 7.5vw, 102px);
  font-weight: 300;
  line-height: 1.0;
  margin-bottom: 32px;
  opacity: 0;
  animation: fadeUp 0.9s 0.35s forwards;
}
.hero-headline em { font-style: italic; color: var(--gold-light); display: block; }

.hero-sub {
  font-size: 22px;
  color: var(--white-dim);
  max-width: 590px;
  line-height: 1.75;
  margin-bottom: 52px;
  opacity: 0;
  animation: fadeUp 0.9s 0.5s forwards;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  opacity: 0;
  animation: fadeUp 0.9s 0.65s forwards;
}

/* ─── QUERY DEMO ─── */
.query-demo {
  margin-bottom: 80px;
  opacity: 0;
  animation: fadeUp 1s 0.85s forwards;
}

.query-window {
  background: var(--surface);
  border: 1px solid var(--gold-border);
  border-radius: 8px;
  overflow: hidden;
  max-width: 700px;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--gold-dim);
}

.query-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--white-faint);
}

.query-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.qd-1 { background: #e05c5c; }
.qd-2 { background: #e0a75c; }
.qd-3 { background: #6ac46a; }

.query-input-area {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  background: var(--surface-3);
  border: 1px solid var(--gold-border);
  border-radius: var(--radius);
  padding: 8px 14px;
  min-width: 0;
  width: 0;
  min-height: 42px;
  overflow: hidden;
}

.query-prompt {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.05em;
  flex-shrink: 0;
  user-select: none;
}

.query-typing {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--white);
  overflow: hidden;
  white-space: nowrap;
  border-right: 2px solid transparent;
  min-width: 0;
}
.query-typing.blinking { animation: blink 0.75s step-end infinite; }

.query-body { padding: 24px 20px; transition: opacity 0.4s ease; }

.query-result-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--white-faint);
  font-size: 13px;
}
.query-result-row:last-child { border-bottom: none; }

.qr-label {
  color: var(--white-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  min-width: 90px;
}
.qr-bar-wrap { flex: 1; height: 4px; background: var(--white-faint); border-radius: 2px; overflow: hidden; }
.qr-bar { height: 100%; border-radius: 2px; background: linear-gradient(90deg, var(--gold), var(--gold-light)); }
.qr-bar--neg { background: linear-gradient(90deg, var(--red), #e08080); }
.qr-val { font-family: var(--font-mono); font-size: 11px; color: var(--white); min-width: 36px; text-align: right; }
.qr-val--pos { color: var(--green); }
.qr-val--neg { color: var(--red); }

/* ─── MARQUEE ─── */
.marquee-wrap {
  padding: 20px 0;
  overflow: hidden;
  background: var(--surface);
  border-top: 1px solid var(--white-faint);
  border-bottom: 1px solid var(--white-faint);
}

.marquee-track {
  display: flex;
  gap: 64px;
  animation: marquee 25s linear infinite;
  white-space: nowrap;
  will-change: transform;
}
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
}

.marquee-item {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white-dim);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  list-style: none;
}
.marquee-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--gold); }

/* ─── FEATURES GRID ─── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--white-faint);
  border: 1px solid var(--white-faint);
  border-radius: 6px;
  overflow: hidden;
}

.feature-card {
  background: var(--surface);
  padding: 44px 36px;
  transition: background var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  opacity: 0;
  transition: opacity var(--transition-slow);
}
.feature-card:hover { background: var(--surface-2); }
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 44px; height: 44px;
  border: 1px solid var(--gold-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  color: var(--gold);
  font-size: 18px;
  font-family: var(--font-mono);
  user-select: none;
}

.feature-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 300;
  color: var(--white);
  margin-bottom: 14px;
  line-height: 1.2;
}

.feature-desc {
  font-size: 14px;
  color: var(--white-dim);
  line-height: 1.75;
}

/* ─── HOW IT WORKS ─── */
.how-section { background: var(--surface); padding: 120px 0; }

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
  margin-top: 72px;
  list-style: none;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 28px; left: 14%; right: 14%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-border), var(--gold-border), var(--gold-border), transparent);
  pointer-events: none;
}

.step { padding: 0 32px 0 0; position: relative; }

.step-num {
  width: 56px; height: 56px;
  border: 1px solid var(--gold-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--gold);
  margin-bottom: 28px;
  background: var(--surface);
  position: relative;
  z-index: 1;
}

.step-title {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--white);
  margin-bottom: 12px;
  line-height: 1.25;
}

.step-desc {
  font-size: 14px;
  color: var(--white-dim);
  line-height: 1.75;
}

.step-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.step-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--gold);
  background: var(--gold-dim);
  border: 1px solid var(--gold-border);
  padding: 4px 10px;
  border-radius: 20px;
}

/* ─── DATA STACK ─── */
.data-section { padding: 120px 0; overflow: hidden; }

.data-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.data-layers { display: flex; flex-direction: column; gap: 8px; }

.data-layer {
  background: var(--surface);
  border: 1px solid var(--white-faint);
  border-radius: var(--radius);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: border-color var(--transition-slow), background var(--transition-slow);
}
.data-layer:hover { border-color: var(--gold-border); background: var(--surface-2); }
.data-layer--highlight {
  background: var(--gold-dim);
  border-color: var(--gold-border);
  box-shadow: 0 0 0 1px var(--gold-border), 0 8px 32px var(--gold-dim);
}

.data-layer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 8px 0;
}

.layer-icon { font-family: var(--font-mono); font-size: 13px; color: var(--gold); min-width: 80px; }
.layer-name { font-size: 14px; color: var(--white); }
.layer-status { margin-left: auto; font-family: var(--font-mono); font-size: 10px; color: var(--green); letter-spacing: 0.1em; }

/* ─── AUDIENCES ─── */
.audience-section { background: var(--surface); padding: 120px 0; }

.audience-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 64px;
  list-style: none;
}

.audience-card {
  background: var(--ink);
  border: 1px solid var(--white-faint);
  border-radius: 6px;
  padding: 32px 24px;
  text-align: center;
  transition: border-color var(--transition-slow), transform var(--transition-slow), box-shadow var(--transition-slow);
}
.audience-card:hover {
  border-color: var(--gold-border);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.audience-icon { font-size: 28px; margin-bottom: 16px; display: block; user-select: none; }
.audience-name { font-family: var(--font-serif); font-size: 17px; color: var(--white); margin-bottom: 8px; }
.audience-desc { font-size: 12px; color: var(--white-dim); line-height: 1.65; }

/* ─── CTA SECTION ─── */
.cta-section {
  padding: 160px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 70% at 50% 50%, var(--gold-dim) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content { position: relative; z-index: 1; }

.cta-title { font-size: clamp(44px, 6vw, 80px); margin-bottom: 28px; }
.cta-title em { font-style: italic; color: var(--gold-light); }

.cta-sub {
  font-size: 18px;
  color: var(--white-dim);
  max-width: 480px;
  margin: 0 auto 52px;
  line-height: 1.75;
}

.cta-actions { display: flex; align-items: center; justify-content: center; gap: 24px; }

/* ─── SOLUTIONS PAGE ─── */
.sol-hero { padding: 180px 0 100px; position: relative; overflow: hidden; }

.sol-hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 80% 30%, rgba(74, 144, 217, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 70% at 10% 80%, rgba(212, 134, 74, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.sol-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  padding: 0 0 80px;
}

.example-questions {
  background: var(--surface);
  border: 1px solid var(--gold-border);
  border-radius: 6px;
  padding: 32px;
  margin-top: 20px;
}

.example-questions__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: 20px;
}

.example-questions__list { display: flex; flex-direction: column; gap: 12px; list-style: none; }

.example-q {
  background: var(--surface-2);
  border: 1px solid var(--white-faint);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 13px;
  color: var(--white-dim);
}
.example-q--active { border-color: var(--gold-border); color: var(--white); }

/* ─── ROLE TABS ─── */
.role-section { padding: 80px 0 120px; background: var(--surface); }

.tabs {
  display: flex;
  border: 1px solid var(--white-faint);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 48px;
  background: var(--ink);
  list-style: none;
  cursor: pointer;
}

.tab-btn {
  flex: 1;
  padding: 14px 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white-dim);
  background: transparent;
  border: none;
  border-right: 1px solid var(--white-faint);
  transition: color var(--transition-base), background var(--transition-base);
}
.tab-btn:last-child { border-right: none; }
.tab-btn:hover { color: var(--white); background: var(--white-faint); }
.tab-btn[aria-selected="true"] { color: var(--gold); background: var(--gold-dim); }

.tab-panel { display: none; }
.tab-panel[aria-hidden="false"] { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }

.panel-title { font-family: var(--font-serif); font-size: 40px; color: var(--white); margin-bottom: 20px; line-height: 1.15; }
.panel-title em { font-style: italic; color: var(--gold-light); }
.panel-desc { font-size: 15px; color: var(--white-dim); line-height: 1.8; margin-bottom: 32px; }

.cap-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }

.cap-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 14px;
  color: var(--white-dim);
  line-height: 1.65;
}

.cap-bullet {
  width: 20px; height: 20px;
  border: 1px solid var(--gold-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.cap-bullet::after {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

/* ─── USE CASES ─── */
.usecase-section { padding: 120px 0; }

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 64px;
}

.usecase-card {
  background: var(--surface);
  border: 1px solid var(--white-faint);
  border-radius: 6px;
  padding: 44px 40px;
  transition: border-color var(--transition-slow), background var(--transition-slow);
}
.usecase-card:hover { border-color: var(--gold-border); background: var(--surface-2); }

.uc-num { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.15em; color: var(--gold); margin-bottom: 20px; display: block; }
.uc-title { font-family: var(--font-serif); font-size: 30px; color: var(--white); margin-bottom: 16px; line-height: 1.2; }
.uc-desc { font-size: 14px; color: var(--white-dim); line-height: 1.8; }

/* ─── ABOUT PAGE ─── */
.about-hero { padding: 180px 0 100px; position: relative; overflow: hidden; }

.about-hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 30% 50%, rgba(212, 134, 74, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.about-story { padding: 120px 0; background: var(--surface); }

.about-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 80px;
  align-items: start;
}

.about-sticky { position: sticky; top: 100px; }

.story-block { margin-bottom: 56px; }
.story-block:last-child { margin-bottom: 0; }

.story-heading {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--white);
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--white-faint);
}

.story-text { font-size: 15px; color: var(--white-dim); line-height: 1.85; }
.story-text + .story-text { margin-top: 16px; }

.problem-list { list-style: none; margin-top: 20px; display: flex; flex-direction: column; gap: 12px; }

.problem-item {
  display: flex;
  gap: 14px;
  font-size: 14px;
  color: var(--white-dim);
  line-height: 1.65;
  padding: 14px 16px;
  background: var(--ink);
  border: 1px solid var(--white-faint);
  border-radius: var(--radius);
}

.problem-icon { color: var(--gold); flex-shrink: 0; font-size: 16px; user-select: none; }

/* ─── DIFFERENTIATORS ─── */
.diff-section { padding: 120px 0; }

.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 64px;
}

.diff-card {
  border: 1px solid var(--white-faint);
  border-radius: 6px;
  padding: 40px 32px;
  background: var(--surface);
  transition: background var(--transition-slow), border-color var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.diff-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  opacity: 0;
  transition: opacity var(--transition-slow);
}
.diff-card:hover { background: var(--surface-2); border-color: var(--gold-border); }
.diff-card:hover::after { opacity: 1; }

.diff-title { font-family: var(--font-serif); font-size: 24px; color: var(--white); margin-bottom: 14px; line-height: 1.2; }
.diff-desc { font-size: 14px; color: var(--white-dim); line-height: 1.8; }

/* ─── TEAM ─── */
.team-section { background: var(--surface); padding: 120px 0; }

.team-grid {
  display: grid;
  justify-items: center;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 64px;
  list-style: none;
}

.team-card {
  background: var(--ink);
  border: 1px solid var(--white-faint);
  border-radius: 6px;
  overflow: hidden;
  transition: border-color var(--transition-slow), transform var(--transition-slow), box-shadow var(--transition-slow);
  max-width: 350px;
}
.team-card:hover {
  border-color: var(--gold-border);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.team-avatar {
  width: 100%;
  aspect-ratio: 1;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  max-height: 150px;
}

.team-initials {
  font-family: var(--font-serif);
  font-size: 48px;
  color: var(--gold);
  font-weight: 300;
  letter-spacing: 0.05em;
  position: relative;
  z-index: 1;
}

.team-avatar-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 50%, var(--gold-dim), transparent 70%);
}

.team-info {
  padding: 24px 24px 28px;
  border-top: 1px solid var(--white-faint);
}

.team-name { font-family: var(--font-serif); font-size: 24px; color: var(--white); margin-bottom: 4px; font-weight: 400; }
.team-role { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gold); margin-bottom: 14px; display: block; }
.team-bio { font-size: 16px; color: var(--white-dim); line-height: 1.7; }

/* ─── VISION ─── */
.vision-section {
  padding: 140px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.vision-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 80% at 50% 50%, var(--gold-dim) 0%, transparent 70%);
  pointer-events: none;
}

.vision-quote {
  position: relative; z-index: 1;
  font-family: var(--font-serif);
  font-size: clamp(32px, 4.5vw, 58px);
  font-weight: 300;
  font-style: italic;
  color: var(--white);
  line-height: 1.3;
  max-width: 860px;
  margin: 0 auto 40px;
}
.vision-quote em { color: var(--gold-light); font-style: normal; }
.vision-attr { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); position: relative; z-index: 1; }

/* ─── FOOTER ─── */
.site-footer {
  background: var(--ink-deep);
  border-top: 1px solid var(--white-faint);
  padding: 64px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 64px;
}

.footer-tagline { font-size: 14px; color: var(--white-dim); margin-top: 16px; line-height: 1.7; max-width: 280px; }

.footer-col-title { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); margin-bottom: 20px; }

.footer-links { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-links li { cursor: pointer; }
.footer-links a { font-size: 14px; color: var(--white-dim); text-decoration: none; transition: color var(--transition-base); background: none; border: none; padding: 0; }
.footer-links a:hover { color: var(--white); }

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--white-faint);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy { font-family: var(--font-mono); font-size: 11px; color: var(--white-dim); letter-spacing: 0.05em; }

/* ─── AUTH & DEMO PAGES ─── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 24px 40px;
  position: relative;
  overflow: hidden;
}

.auth-page-bg { position: absolute; inset: 0; pointer-events: none; }

.auth-card { width: 100%; max-width: 440px; position: relative; z-index: 1; }
.auth-card--wide { max-width: 560px; }

.auth-header { text-align: center; margin-bottom: 48px; }
.auth-logo { justify-content: center; margin-bottom: 28px; }
.auth-title { font-family: var(--font-serif); font-size: 32px; font-weight: 300; color: var(--white); margin-bottom: 10px; }
.auth-subtitle { font-size: 14px; color: var(--white-dim); }

.auth-form {
  background: var(--surface);
  border: 1px solid var(--gold-border);
  border-radius: 8px;
  padding: 40px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.form-group { margin-bottom: 24px; }
.form-group:last-of-type { margin-bottom: 32px; }

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}

.form-input,
.form-select {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--white-faint);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition-base);
  appearance: none;
}
.form-input:focus,
.form-select:focus { border-color: var(--gold-border); }
.form-input::placeholder { color: var(--white-faint); }
.form-select { cursor: pointer; }
.form-select option { background: var(--surface-2); color: var(--white); }

.form-footer { text-align: center; margin-top: 20px; }

.form-link {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--white-dim);
  text-decoration: none;
  letter-spacing: 0.08em;
  background: none;
  border: none;
  transition: color var(--transition-base);
}
.form-link:hover { color: var(--white); }

.auth-back { text-align: center; margin-top: 24px; }

/* ─── SCROLL-TRIGGERED FADE ─── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; transition: none; }
  .hero-eyebrow, .hero-headline, .hero-sub, .hero-actions, .query-demo {
    opacity: 1; animation: none;
  }
}

/* ─── KEYFRAMES ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@keyframes blink {
  from, to { border-color: transparent; }
  50%      { border-color: var(--gold); }
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .features-grid  { grid-template-columns: repeat(2, 1fr); }
  .steps-grid     { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .steps-grid::before { display: none; }
  .audience-grid  { grid-template-columns: repeat(3, 1fr); }
  .team-grid      { grid-template-columns: repeat(2, 1fr); }
  .footer-grid    { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .site-nav   { padding: 0 24px; }
  .nav-links  { display: none; }
  .container  { padding: 20px 24px; }
  .section    { padding: 80px 0; }

  .features-grid,
  .data-layout,
  .sol-grid,
  .about-grid  { grid-template-columns: 1fr; gap: 40px; }

  .tab-panel[aria-hidden="false"],
  .usecase-grid,
  .diff-grid   { grid-template-columns: 1fr; }

  .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid     { grid-template-columns: repeat(2, 1fr); }
  .footer-grid   { grid-template-columns: 1fr; gap: 40px; }
  .form-row      { grid-template-columns: 1fr; }

  .hero-headline { font-size: clamp(44px, 12vw, 72px); }

  .cta-actions,
  .hero-actions  { flex-direction: column; align-items: stretch; text-align: center; }
    
  /* ─── query widget mobile ─── */
  .query-demo    { margin-bottom: 40px; }
  .query-input-area { width: auto; align-items: flex-start; padding: 8px 14px; overflow-y: auto; }
  .query-typing     { white-space: normal; word-break: break-word; flex: 1; border-right: none; }
  .query-prompt     { padding-top: 1px; }
  .qr-label      { min-width: 90px; font-size: 10px; }
  .qr-val        { min-width: 36px; font-size: 11px; }
  .query-result-row { gap: 8px; }
  .query-body    { padding: 16px 14px; }
  .query-bar     { min-height: 88px; padding: 12px 14px; gap: 10px; }

  /* no stickiness on mobile */
  .about-sticky { position: static; top: 100px; }
}