/* Stemulator SEO Landing Page — shared styles
   Used by: /stem-separator, /vocal-remover, /karaoke-maker,
            /instrumental-maker, /audio-splitter, /music-separator */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@500;700;900&family=Rajdhani:wght@400;500;600;700&family=Michroma&display=swap');

:root {
  --bg: #050510;
  --bg-elev: #0d0d1a;
  --bg-card: #12121f;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text: #f5f5f5;
  --text-dim: #a0a0b0;
  --text-faint: #6b6b7a;
  --primary: #4CAF50;
  --primary-dark: #3e8e41;
  --primary-light: #81C784;
  --accent-purple: #9575CD;
  --accent-cyan: #00BCD4;
  --accent-gold: #FFC107;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Rajdhani', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--primary-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary); }

/* ─── Top nav ─── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 5, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'Michroma', 'Audiowide', 'Orbitron', sans-serif;
  font-weight: 400;
  font-size: 18px;
  letter-spacing: 2px;
  color: #00cc66;
  text-transform: uppercase;
  text-decoration: none;
  text-shadow:
    0 0 10px #00cc66,
    0 0 20px #00cc66,
    0 0 40px #00cc66,
    0 0 80px #00cc66;
  animation: futuristicGlow 4s ease-in-out infinite alternate;
}
.nav-logo:hover { color: #1ee37a; }

@keyframes futuristicGlow {
  from {
    text-shadow:
      0 0 10px #00cc66,
      0 0 20px #00cc66,
      0 0 40px #00cc66,
      0 0 80px #00cc66;
  }
  to {
    text-shadow:
      0 0 20px #00cc66,
      0 0 30px #00cc66,
      0 0 60px #00cc66,
      0 0 120px #00cc66;
  }
}
.nav-cta {
  font-family: 'Rajdhani', sans-serif;
  background: var(--primary);
  color: #0a0a12;
  padding: 10px 22px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.5px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.nav-cta:hover {
  color: #0a0a12;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
}

/* ─── Hero ─── */
.hero {
  padding: 80px 24px 100px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(76, 175, 80, 0.15), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  font-family: 'Michroma', sans-serif;
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -1px;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero h1 .accent {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 19px;
  color: var(--text-dim);
  margin-bottom: 36px;
  max-width: 540px;
  font-weight: 400;
}
.hero-cta-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  font-family: 'Rajdhani', sans-serif;
  background: var(--primary);
  color: #0a0a12;
  padding: 16px 32px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: transform 0.2s, box-shadow 0.2s;
  display: inline-block;
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  color: #0a0a12;
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(76, 175, 80, 0.4);
}
.btn-secondary {
  font-family: 'Rajdhani', sans-serif;
  background: transparent;
  color: var(--text);
  padding: 16px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border: 1px solid var(--border-strong);
  transition: border-color 0.2s, background 0.2s;
  display: inline-block;
}
.btn-secondary:hover {
  color: var(--text);
  border-color: var(--primary);
  background: rgba(76, 175, 80, 0.08);
}
.hero-meta {
  margin-top: 24px;
  font-family: 'Michroma', sans-serif;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-faint);
  text-transform: uppercase;
}
.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 520px;
  justify-self: center;
}
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 20px 60px rgba(76, 175, 80, 0.25));
}

/* ─── Section shell ─── */
section {
  padding: 80px 24px;
  position: relative;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
}
.section-eyebrow {
  font-family: 'Michroma', sans-serif;
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 16px;
  text-align: center;
}
h2 {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 800;
  letter-spacing: -0.5px;
  text-align: center;
  margin-bottom: 20px;
  text-transform: uppercase;
}
h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.section-intro {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 720px;
  margin: 0 auto 60px;
  text-align: center;
}

/* ─── Demo audio row ─── */
.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.demo-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  text-align: center;
}
.demo-label {
  font-family: 'Michroma', sans-serif;
  font-size: 10px;
  letter-spacing: 2.5px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.demo-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.demo-card audio {
  width: 100%;
  margin-top: 8px;
}

/* ─── What you get grid ─── */
.stems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.stem-tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 24px;
  transition: border-color 0.25s, transform 0.25s;
}
.stem-tile:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
}
.stem-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(76, 175, 80, 0.2), rgba(76, 175, 80, 0.05));
  border: 1px solid rgba(76, 175, 80, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 24px;
}
.stem-name {
  font-family: 'Orbitron', sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
  text-transform: uppercase;
}
.stem-desc {
  font-size: 15px;
  color: var(--text-dim);
}

/* ─── Content body ─── */
.content-body {
  max-width: 820px;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-dim);
}
.content-body h3 {
  color: var(--text);
  margin-top: 36px;
  margin-bottom: 14px;
  text-transform: none;
  font-size: 22px;
  letter-spacing: 0;
}
.content-body p { margin-bottom: 20px; }
.content-body ul { margin: 0 0 24px 24px; }
.content-body li { margin-bottom: 8px; }
.content-body strong { color: var(--text); font-weight: 600; }

/* ─── Comparison table ─── */
.compare-wrap { overflow-x: auto; margin-top: 40px; }
.compare-table {
  width: 100%;
  min-width: 640px;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.compare-table th,
.compare-table td {
  padding: 18px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
}
.compare-table th {
  font-family: 'Michroma', sans-serif;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-faint);
  background: rgba(255, 255, 255, 0.02);
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table .us {
  background: rgba(76, 175, 80, 0.06);
  color: var(--primary-light);
  font-weight: 600;
}
.compare-table .yes { color: var(--primary); font-weight: 600; }
.compare-table .no { color: var(--text-faint); }
.compare-table .partial { color: var(--accent-gold); }

/* ─── FAQ ─── */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq-item[open] { border-color: var(--primary); }
.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 18px;
  color: var(--text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-family: 'Orbitron', sans-serif;
  font-size: 22px;
  color: var(--primary);
  transition: transform 0.2s;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body {
  padding: 0 24px 20px;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.7;
}

/* ─── Final CTA ─── */
.final-cta {
  background: linear-gradient(180deg, transparent, rgba(76, 175, 80, 0.08));
  text-align: center;
  padding: 100px 24px;
}
.final-cta h2 { margin-bottom: 20px; }
.final-cta p {
  font-size: 19px;
  color: var(--text-dim);
  max-width: 600px;
  margin: 0 auto 36px;
}

/* ─── Related links ─── */
.related {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 24px;
  border-top: 1px solid var(--border);
}
.related-title {
  font-family: 'Michroma', sans-serif;
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--text-faint);
  text-transform: uppercase;
  margin-bottom: 24px;
  text-align: center;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.related-link {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  transition: border-color 0.2s, transform 0.2s;
  text-align: center;
}
.related-link:hover {
  color: var(--text);
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* ─── Footer ─── */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-faint);
  font-size: 14px;
}
footer a { color: var(--text-dim); margin: 0 12px; }

/* ─── Responsive ─── */
@media (max-width: 860px) {
  .hero { padding: 56px 20px 72px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 380px; margin: 0 auto; }
  section { padding: 60px 20px; }
  .demo-grid { grid-template-columns: 1fr; }
}

/* ============================================
   Exclusive feature spotlight
   Used to highlight the 3 Stemulator-only features:
   MIDI Chord Map, Warp to Fixed BPM, Crop to Downbeat
   ============================================ */
.exclusive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.exclusive-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
}
.exclusive-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}
.exclusive-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}
.exclusive-badge {
  display: inline-block;
  font-family: 'Michroma', sans-serif;
  font-size: 9px;
  letter-spacing: 2.5px;
  color: var(--primary);
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid rgba(76, 175, 80, 0.3);
  padding: 6px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.exclusive-card h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 24px;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
  text-transform: none;
}
.exclusive-card .tagline {
  font-family: 'Rajdhani', sans-serif;
  color: var(--primary-light);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 16px;
}
.exclusive-card p {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 14px;
}
.exclusive-card .use-case {
  font-family: 'Michroma', sans-serif;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-faint);
  text-transform: uppercase;
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: 18px;
}