/* ==========================================
   GridTheory Landing Page
   Mobile-first, dark mode, lime accent
   ========================================== */

:root {
  --bg: #0a0a0e;
  --bg-2: #111118;
  --bg-3: #1a1a24;
  --fg: #e8e4dc;
  --fg-muted: #8a8799;
  --accent: #b4ff3f;
  --accent-dim: rgba(180, 255, 63, 0.12);
  --attract: #ff6b35;
  --attract-dim: rgba(255, 107, 53, 0.12);
  --nurture: #3fa9f5;
  --nurture-dim: rgba(63, 169, 245, 0.12);
  --position: #b4ff3f;
  --convert: #c77dff;
  --convert-dim: rgba(199, 125, 255, 0.12);
  --radius: 10px;
  --radius-sm: 6px;
  --font-head: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- Nav ---- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 24px;
  background: rgba(10,10,14,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(180,255,63,0.08);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(180,255,63,0.25);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  letter-spacing: -0.5px;
}
.nav-label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 15px;
  color: var(--fg);
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.nav-link {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 400;
  color: var(--fg-muted);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}
.nav-link:hover {
  color: var(--fg);
  background: var(--bg-2);
}

/* ---- Hero ---- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 20% 60%, rgba(180,255,63,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 80% 20%, rgba(199,125,255,0.03) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  width: 100%;
}
.hero-eyebrow {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  opacity: 0.9;
}
.hero-headline {
  font-family: var(--font-head);
  font-size: clamp(52px, 10vw, 96px);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -2px;
  color: var(--fg);
  margin-bottom: 24px;
}
.hero-accent {
  color: var(--accent);
}
.hero-sub {
  font-size: 18px;
  font-weight: 300;
  color: var(--fg-muted);
  max-width: 480px;
  margin-bottom: 48px;
  line-height: 1.7;
}

/* Content Grid Preview */
.hero-grid-preview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  max-width: 700px;
}
.grid-card {
  background: var(--bg-2);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 14px;
  transition: transform 0.2s ease;
}
.grid-card:hover { transform: translateY(-2px); }
.grid-card--attract { border-top: 2px solid var(--attract); }
.grid-card--position { border-top: 2px solid var(--position); }
.grid-card--nurture { border-top: 2px solid var(--nurture); }
.grid-card--convert { border-top: 2px solid var(--convert); }
.grid-day {
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--fg-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.grid-tag {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: inline-block;
  padding: 2px 6px;
  border-radius: 3px;
}
.grid-card--attract .grid-tag { color: var(--attract); background: var(--attract-dim); }
.grid-card--position .grid-tag { color: var(--position); background: var(--accent-dim); }
.grid-card--nurture .grid-tag { color: var(--nurture); background: var(--nurture-dim); }
.grid-card--convert .grid-tag { color: var(--convert); background: var(--convert-dim); }
.grid-title {
  font-size: 12px;
  font-weight: 400;
  color: var(--fg-muted);
  line-height: 1.4;
}

/* ---- Shared section styles ---- */
.section-title {
  font-family: var(--font-head);
  font-size: clamp(32px, 6vw, 52px);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 17px;
  font-weight: 300;
  color: var(--fg-muted);
  max-width: 520px;
  margin-bottom: 48px;
  line-height: 1.7;
}

/* ---- Mission ---- */
.mission {
  padding: 100px 24px;
  background: var(--bg-2);
  border-top: 1px solid rgba(255,255,255,0.04);
}
.mission-inner {
  max-width: 960px;
  margin: 0 auto;
}
.mission-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.mission-card {
  background: var(--bg-3);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid rgba(255,255,255,0.05);
}
.mission-card--attract { border-left: 3px solid var(--attract); }
.mission-card--nurture { border-left: 3px solid var(--nurture); }
.mission-card--position { border-left: 3px solid var(--position); }
.mission-card--convert { border-left: 3px solid var(--convert); }
.mission-icon { margin-bottom: 16px; }
.mission-card--attract .mission-icon { color: var(--attract); }
.mission-card--nurture .mission-icon { color: var(--nurture); }
.mission-card--position .mission-icon { color: var(--position); }
.mission-card--convert .mission-icon { color: var(--convert); }
.mission-card h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.mission-card p {
  font-size: 14px;
  font-weight: 300;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ---- Calendar ---- */
.calendar-section {
  padding: 100px 24px;
  background: var(--bg);
  border-top: 1px solid rgba(255,255,255,0.04);
}
.calendar-inner {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.week-mix {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
}
.mix-row {
  display: grid;
  grid-template-columns: 44px 80px 1fr;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg-2);
  border-radius: var(--radius-sm);
  font-size: 14px;
}
.mix-day {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 600;
  color: var(--fg-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.mix-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  text-align: center;
}
.mix-tag--attract { color: var(--attract); background: var(--attract-dim); }
.mix-tag--nurture { color: var(--nurture); background: var(--nurture-dim); }
.mix-tag--position { color: var(--position); background: var(--accent-dim); }
.mix-tag--convert { color: var(--convert); background: var(--convert-dim); }
.mix-desc {
  font-size: 13px;
  font-weight: 300;
  color: var(--fg-muted);
}

/* Calendar visual */
.calendar-visual {
  background: var(--bg-2);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 28px;
}
.cal-month-label {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--fg-muted);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.cal-week {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin-bottom: 20px;
}
.cal-cell {
  height: 40px;
  border-radius: 6px;
  opacity: 0.85;
}
.cal-cell--attract { background: var(--attract-dim); border: 1px solid rgba(255,107,53,0.3); }
.cal-cell--nurture { background: var(--nurture-dim); border: 1px solid rgba(63,169,245,0.3); }
.cal-cell--position { background: var(--accent-dim); border: 1px solid rgba(180,255,63,0.3); }
.cal-cell--convert { background: var(--convert-dim); border: 1px solid rgba(199,125,255,0.3); }
.cal-legend {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.legend-item {
  font-size: 11px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
}
.legend-attract { color: var(--attract); background: var(--attract-dim); }
.legend-nurture { color: var(--nurture); background: var(--nurture-dim); }
.legend-position { color: var(--position); background: var(--accent-dim); }
.legend-convert { color: var(--convert); background: var(--convert-dim); }

/* ---- Analytics ---- */
.analytics-section {
  padding: 100px 24px;
  background: var(--bg-2);
  border-top: 1px solid rgba(255,255,255,0.04);
}
.analytics-inner {
  max-width: 960px;
  margin: 0 auto;
}
.analytics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 40px;
}
.stat-card {
  background: var(--bg-3);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
  padding: 20px;
}
.stat-card--highlight {
  border-color: rgba(180,255,63,0.2);
  background: linear-gradient(135deg, rgba(180,255,63,0.05) 0%, transparent 60%);
}
.stat-value {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 800;
  color: var(--fg);
  margin-bottom: 4px;
  letter-spacing: -1px;
}
.stat-label {
  font-size: 12px;
  font-weight: 400;
  color: var(--fg-muted);
  margin-bottom: 12px;
}
.stat-bar {
  height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}
.stat-fill {
  height: 100%;
  background: rgba(255,255,255,0.2);
  border-radius: 2px;
}
.stat-fill--lime { background: var(--accent); }

.insight-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.insight {
  background: var(--bg-3);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.05);
}
.insight-label {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.insight-double { color: var(--position); background: var(--accent-dim); }
.insight-stop { color: #ff4d4d; background: rgba(255,77,77,0.1); }
.insight-next { color: var(--nurture); background: var(--nurture-dim); }
.insight p {
  font-size: 13px;
  font-weight: 300;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ---- Voice ---- */
.voice-section {
  padding: 100px 24px;
  background: var(--bg);
  border-top: 1px solid rgba(255,255,255,0.04);
}
.voice-inner {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.pillar-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.pillar {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.pillar-num {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
  padding-top: 3px;
  flex-shrink: 0;
}
.pillar-name {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}
.pillar p {
  font-size: 14px;
  font-weight: 300;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* Voice builder card */
.voice-builder { }
.builder-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 16px;
}
.builder-card {
  background: var(--bg-2);
  border: 1px solid rgba(180,255,63,0.15);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 16px;
}
.builder-text {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--fg);
  font-style: italic;
}
.builder-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.builder-tags span {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  background: var(--bg-3);
  color: var(--fg-muted);
  border: 1px solid rgba(255,255,255,0.06);
}

/* ---- Closing ---- */
.closing {
  padding: 100px 24px 80px;
  background: var(--bg);
}
.closing-inner {
  max-width: 860px;
  margin: 0 auto;
}
.closing-rule {
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 40px;
  opacity: 0.6;
}
.closing-text {
  font-family: var(--font-head);
  font-size: clamp(40px, 8vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}
.closing-accent { color: var(--accent); }
.closing-sub {
  font-size: 18px;
  font-weight: 300;
  color: var(--fg-muted);
  max-width: 480px;
}

/* ---- Footer ---- */
.footer {
  padding: 40px 24px;
  border-top: 1px solid rgba(255,255,255,0.04);
}
.footer-inner {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  color: var(--fg-muted);
}
.footer-logo {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 14px;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(180,255,63,0.2);
  padding: 3px 7px;
  border-radius: 4px;
}
.footer-note {
  font-size: 13px;
  color: rgba(138,135,153,0.5);
  font-weight: 300;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .hero-grid-preview {
    grid-template-columns: repeat(2, 1fr);
  }
  .mission-grid {
    grid-template-columns: 1fr;
  }
  .calendar-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .analytics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .insight-row {
    grid-template-columns: 1fr;
  }
  .voice-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .hero-headline {
    letter-spacing: -1px;
  }
  .hero-grid-preview {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .analytics-grid {
    grid-template-columns: 1fr 1fr;
  }
  .mix-row {
    grid-template-columns: 40px 70px 1fr;
    gap: 8px;
    padding: 8px 10px;
  }
}