:root {
  --bg-deep: #060913;
  --bg-panel: #0d1326;
  --bg-panel-hi: #131c38;
  --bg-glass: rgba(13, 19, 38, 0.78);
  --stroke: rgba(148, 163, 184, 0.14);
  --stroke-hi: rgba(56, 189, 248, 0.38);
  --text-main: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-dim: #94a3b8;
  --accent-cyan: #38bdf8;
  --accent-blue: #0ea5e9;
  --accent-violet: #a855f7;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  --font-tamil: 'Noto Sans Tamil', 'Tamil Sangam MN', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-sans);
}

body {
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(circle at 15% 10%, rgba(56, 189, 248, 0.10) 0%, transparent 40%),
    radial-gradient(circle at 85% 18%, rgba(168, 85, 247, 0.11) 0%, transparent 42%),
    radial-gradient(circle at 50% 65%, rgba(16, 185, 129, 0.06) 0%, transparent 50%);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Qualification Top Banner */
.qualification-bar {
  background: linear-gradient(90deg, rgba(14, 165, 233, 0.15), rgba(168, 85, 247, 0.18), rgba(16, 185, 129, 0.15));
  border-bottom: 1px solid var(--stroke-hi);
  padding: 8px 20px;
  font-size: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  text-align: center;
}

.qualification-pill {
  background: rgba(56, 189, 248, 0.18);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.4);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgba(6, 9, 19, 0.84);
  border-bottom: 1px solid var(--stroke);
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0ea5e9 0%, #9333ea 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 18px;
  box-shadow: 0 0 22px rgba(14, 165, 233, 0.45);
}

.brand-title {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  background: rgba(56, 189, 248, 0.16);
  color: var(--accent-cyan);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.brand-sub {
  font-size: 11px;
  color: var(--text-dim);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: 8px;
  transition: all 0.18s ease;
}

.nav-links a:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.07);
}

.nav-cta {
  background: linear-gradient(135deg, #0ea5e9 0%, #7c3aed 100%);
  color: white !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.3);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.45);
}

/* Layout Containers */
.container {
  max-width: 1340px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 84px 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}

/* Hero Section */
.hero {
  padding: 76px 0 68px;
  text-align: center;
  position: relative;
}

.sangam-motto {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border-radius: 999px;
  background: rgba(13, 19, 38, 0.85);
  border: 1px solid rgba(56, 189, 248, 0.32);
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--text-secondary);
  box-shadow: 0 0 30px rgba(56, 189, 248, 0.12);
}

.sangam-tamil {
  font-family: var(--font-tamil);
  color: var(--accent-cyan);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 850;
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 1020px;
  margin: 0 auto 22px;
}

.gradient-text {
  background: linear-gradient(135deg, #38bdf8 0%, #a855f7 52%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.8vw, 1.24rem);
  color: var(--text-secondary);
  max-width: 860px;
  margin: 0 auto 34px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 52px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #0ea5e9 0%, #7c3aed 100%);
  color: white;
  box-shadow: 0 8px 26px rgba(14, 165, 233, 0.32);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(14, 165, 233, 0.45);
}

.btn-secondary {
  background: rgba(19, 28, 56, 0.8);
  color: var(--text-main);
  border-color: var(--stroke-hi);
}

.btn-secondary:hover {
  background: rgba(56, 189, 248, 0.14);
}

/* Hero Metric Grid */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(195px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.metric-card {
  background: var(--bg-glass);
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 20px 18px;
  text-align: left;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.metric-card:hover {
  border-color: var(--stroke-hi);
  transform: translateY(-2px);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 800;
  color: var(--accent-cyan);
  margin-bottom: 4px;
}

.metric-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.metric-detail {
  font-size: 11.5px;
  color: var(--text-dim);
  line-height: 1.4;
}

/* Section Headers */
.section-header {
  margin-bottom: 42px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: 8px;
  display: inline-block;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 780px;
  font-size: 16px;
}

/* Cards & Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 22px;
}

.glass-card {
  background: var(--bg-glass);
  border: 1px solid var(--stroke);
  border-radius: 16px;
  padding: 26px;
  transition: all 0.2s ease;
}

.glass-card:hover {
  border-color: rgba(56, 189, 248, 0.3);
}

.card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 6px;
  margin-bottom: 14px;
  font-weight: 600;
}

.tag-cyan { background: rgba(56, 189, 248, 0.14); color: var(--accent-cyan); border: 1px solid rgba(56, 189, 248, 0.3); }
.tag-violet { background: rgba(168, 85, 247, 0.14); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.3); }
.tag-emerald { background: rgba(16, 185, 129, 0.14); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.tag-amber { background: rgba(245, 158, 11, 0.14); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.tag-rose { background: rgba(244, 63, 94, 0.14); color: #fb7185; border: 1px solid rgba(244, 63, 94, 0.3); }

.glass-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.glass-card p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 16px;
}

.spec-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.spec-list li {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.spec-list li::before {
  content: "▹";
  color: var(--accent-cyan);
  font-weight: bold;
}

/* macOS Workstation Simulator */
.macos-window {
  background: #080d1a;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.65);
}

.macos-titlebar {
  background: #0d1428;
  padding: 12px 18px;
  border-bottom: 1px solid var(--stroke);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.traffic-lights {
  display: flex;
  gap: 8px;
  align-items: center;
}

.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.macos-tabs {
  display: flex;
  gap: 4px;
  background: rgba(6, 9, 19, 0.75);
  padding: 4px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  overflow-x: auto;
}

.macos-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 7px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.16s ease;
}

.macos-tab-btn.active {
  background: rgba(56, 189, 248, 0.2);
  color: var(--text-main);
  border: 1px solid rgba(56, 189, 248, 0.35);
}

.macos-body {
  padding: 24px;
  min-height: 410px;
}

.subtab-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.subtab-btn {
  background: rgba(19, 28, 56, 0.7);
  border: 1px solid var(--stroke);
  color: var(--text-secondary);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all 0.15s ease;
}

.subtab-btn.active {
  background: rgba(168, 85, 247, 0.22);
  border-color: var(--accent-violet);
  color: #f3e8ff;
}

/* Interactive Playgrounds */
.playground-box {
  background: #090e1d;
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 20px;
  margin-top: 14px;
}

.sample-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.chip-btn {
  background: rgba(30, 41, 59, 0.75);
  border: 1px solid var(--stroke);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.chip-btn:hover, .chip-btn.active {
  border-color: var(--accent-cyan);
  color: var(--text-main);
  background: rgba(56, 189, 248, 0.16);
}

.terminal-output {
  background: #040710;
  border: 1px solid rgba(56, 189, 248, 0.24);
  border-radius: 10px;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: #e2e8f0;
  white-space: pre-wrap;
  line-height: 1.55;
}

/* Shruti Synthesizer Keyboard */
.shruti-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(135px, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.shruti-btn {
  background: rgba(19, 28, 56, 0.85);
  border: 1px solid var(--stroke);
  border-radius: 10px;
  padding: 12px;
  text-align: left;
  cursor: pointer;
  color: var(--text-main);
  transition: all 0.16s ease;
}

.shruti-btn:hover, .shruti-btn.playing {
  border-color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.16);
  transform: translateY(-2px);
}

.shruti-ratio {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 800;
  color: var(--accent-emerald);
}

.shruti-name {
  font-size: 12px;
  font-weight: 600;
  margin-top: 2px;
}

.shruti-hz {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--stroke);
  border-radius: 14px;
  background: var(--bg-glass);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13.5px;
}

th, td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--stroke);
}

th {
  background: rgba(19, 28, 56, 0.9);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(56, 189, 248, 0.04);
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.gallery-item {
  background: var(--bg-panel);
  border: 1px solid var(--stroke);
  border-radius: 14px;
  overflow: hidden;
}

.gallery-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--stroke);
}

.gallery-caption {
  padding: 12px 16px;
  font-size: 12.5px;
  color: var(--text-secondary);
}

/* Footer */
footer {
  padding: 52px 0;
  background: #04060d;
  color: var(--text-dim);
  font-size: 13px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

@media (max-width: 768px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  .navbar {
    padding: 12px 16px;
  }
}