/* ==============================
   LalaScriptOS — Theme CSS
   ============================== */

:root {
  --bg-primary: #F5EFE6;
  --bg-secondary: #EDE5D8;
  --bg-dark: #1A0D14;
  --color-maroon: #5C1E2E;
  --color-maroon-light: #7A2D42;
  --color-gold: #B8923A;
  --color-gold-light: #D4AA52;
  --color-cream: #FAF6F0;
  --color-text: #2C1A22;
  --color-text-muted: #6B4D5C;
  --color-text-light: #F5EFE6;
  --font-display: 'Crimson Pro', Georgia, serif;
  --font-body: 'Outfit', system-ui, sans-serif;
  --max-width: 1200px;
  --section-pad: 96px;
  --section-pad-sm: 64px;
}

/* NAV */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 40px;
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-maroon);
  letter-spacing: -0.02em;
}
.nav-logo-os {
  font-size: 13px;
  font-weight: 400;
  color: var(--color-gold);
  margin-left: 2px;
  vertical-align: super;
}

/* HERO */
.hero {
  min-height: 100vh;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  padding: 120px 40px 80px;
}
.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  width: 100%;
}
.hero-eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 24px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 600;
  line-height: 1.05;
  color: var(--color-maroon);
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}
.hero-headline em {
  font-style: italic;
  color: var(--color-gold);
}
.hero-sub {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 440px;
  font-weight: 300;
}

/* STAVE BLOCK */
.hero-stave {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.stave-block {
  background: var(--color-cream);
  border: 1px solid rgba(92,30,46,0.15);
  border-radius: 12px;
  padding: 28px 32px;
  display: grid;
  grid-template-columns: 30px 1fr;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}
.stave-lines {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 40px;
}
.stave-line {
  height: 1px;
  background: rgba(92,30,46,0.25);
}
.stave-notes {
  display: flex;
  align-items: flex-end;
  gap: 0;
  height: 40px;
  position: relative;
}
.note-group {
  display: flex;
  align-items: flex-end;
  gap: 4px;
}
.stave-barline {
  width: 1px;
  height: 40px;
  background: rgba(92,30,46,0.3);
  margin: 0 8px;
}
.stave-clef svg text {
  fill: var(--color-maroon);
}
.stave-label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 8px;
  grid-column: 2;
}
.stave-label-original { color: var(--color-maroon); }
.stave-label-simplified { color: var(--color-gold); }

.note {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 16px;
}
.note-head {
  width: 12px;
  height: 10px;
  border: 2px solid var(--color-maroon);
  border-radius: 50%;
  transform: rotate(-15deg);
}
.note-filled .note-head {
  background: var(--color-maroon);
}
.note-stem {
  width: 1.5px;
  height: 28px;
  background: var(--color-maroon);
  margin-top: -1px;
}
.note-filled .note-stem {
  background: var(--color-maroon);
}
.stave-simplified .note-head { border-color: var(--color-gold); }
.stave-simplified .note-filled .note-head { background: var(--color-gold); }
.stave-simplified .note-stem { background: var(--color-gold); }
.stave-simplified .stave-clef svg text { fill: var(--color-gold); }

.hero-badge {
  background: var(--color-maroon);
  color: var(--color-text-light);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 400;
  padding: 10px 20px;
  border-radius: 100px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: center;
  margin-top: 16px;
}
.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-gold);
  display: inline-block;
}

/* HOW IT WORKS */
.how-it-works {
  padding: var(--section-pad) 40px;
  background: var(--bg-secondary);
}
.how-it-works-inner { max-width: var(--max-width); margin: 0 auto; }
.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 600;
  color: var(--color-maroon);
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.section-title-light { color: var(--color-cream); }
.section-sub {
  font-family: var(--font-body);
  font-size: 18px;
  color: var(--color-text-muted);
  margin-top: 12px;
  font-weight: 300;
}
.section-sub-light { color: rgba(245,239,230,0.65); }
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 64px;
}
.step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.step-number {
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1;
  flex-shrink: 0;
}
.step-title {
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-maroon);
  margin-bottom: 8px;
}
.step-desc {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.6;
  font-weight: 300;
}

/* DEMONSTRATION */
.demonstration {
  padding: var(--section-pad) 40px;
  background: var(--bg-primary);
}
.demonstration-inner { max-width: var(--max-width); margin: 0 auto; }
.demo-header {
  max-width: 640px;
  margin-bottom: 56px;
}
.demo-composition {
  background: var(--color-cream);
  border: 1px solid rgba(92,30,46,0.1);
  border-radius: 20px;
  padding: 40px 48px;
}
.composition-meta { margin-bottom: 32px; }
.composition-name {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  color: var(--color-maroon);
}
.composition-details {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 4px;
  font-weight: 400;
}
.demo-compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: start;
}
.demo-panel {
  background: var(--bg-primary);
  border-radius: 12px;
  padding: 24px 28px;
  border: 1px solid rgba(92,30,46,0.08);
}
.demo-panel-simplified {
  border-color: rgba(184,146,58,0.3);
}
.demo-panel-label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}
.demo-stats {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 16px;
}
.stat-value {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  color: var(--color-maroon);
  line-height: 1;
}
.stat-label {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 2px;
  font-weight: 400;
}
.demo-level-badge {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 100px;
  display: inline-block;
}
.demo-level-original {
  background: rgba(92,30,46,0.08);
  color: var(--color-maroon);
}
.demo-level-beginner {
  background: rgba(184,146,58,0.15);
  color: var(--color-gold);
}
.demo-vs {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-text-muted);
  padding-top: 48px;
  font-weight: 500;
}
.demo-cta {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-muted);
  margin-top: 32px;
  font-weight: 400;
}
.demo-cta a {
  color: var(--color-maroon);
  font-weight: 500;
  text-decoration: none;
}
.demo-cta a:hover { text-decoration: underline; }

/* AUDIENCE */
.audience {
  padding: var(--section-pad) 40px;
  background: var(--bg-secondary);
}
.audience-inner { max-width: var(--max-width); margin: 0 auto; }
.audience-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 56px;
}
.audience-card {
  background: var(--color-cream);
  border-radius: 16px;
  padding: 36px 32px;
  border: 1px solid rgba(92,30,46,0.06);
}
.audience-icon {
  font-size: 32px;
  margin-bottom: 16px;
  line-height: 1;
}
.audience-card-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--color-maroon);
  margin-bottom: 12px;
}
.audience-card-desc {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.7;
  font-weight: 300;
}
.audience-cta {
  margin-top: 56px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.btn-primary {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  background: var(--color-maroon);
  color: var(--color-cream);
  padding: 14px 28px;
  border-radius: 100px;
  text-decoration: none;
  display: inline-block;
  transition: background 0.2s;
}
.btn-primary:hover { background: var(--color-maroon-light); }
.btn-note {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 300;
}

/* UNDER THE HOOD */
.under-the-hood {
  padding: var(--section-pad) 40px;
  background: var(--bg-dark);
}
.under-the-hood-inner { max-width: var(--max-width); margin: 0 auto; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 56px;
}
.feature-item {
  padding: 28px 32px;
  border: 1px solid rgba(184,146,58,0.2);
  border-radius: 12px;
  background: rgba(255,255,255,0.03);
}
.feature-tag {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-gold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.feature-desc {
  font-family: var(--font-body);
  font-size: 15px;
  color: rgba(245,239,230,0.7);
  line-height: 1.65;
  font-weight: 300;
}

/* FOOTER */
.footer {
  padding: 48px 40px;
  background: var(--color-maroon);
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-cream);
}
.footer-logo-os {
  font-size: 13px;
  font-weight: 400;
  color: var(--color-gold);
  margin-left: 2px;
  vertical-align: super;
}
.footer-tagline {
  font-family: var(--font-body);
  font-size: 13px;
  color: rgba(245,239,230,0.5);
  margin-top: 4px;
  font-style: italic;
}
.footer-links {
  display: flex;
  gap: 28px;
}
.footer-links a {
  font-family: var(--font-body);
  font-size: 14px;
  color: rgba(245,239,230,0.65);
  text-decoration: none;
  font-weight: 400;
}
.footer-links a:hover { color: var(--color-cream); }
.footer-legal {
  font-family: var(--font-body);
  font-size: 12px;
  color: rgba(245,239,230,0.35);
  font-weight: 300;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-stave { display: none; }
  .steps { grid-template-columns: 1fr; gap: 32px; }
  .audience-cards { grid-template-columns: 1fr; }
  .demo-compare { grid-template-columns: 1fr; }
  .demo-vs { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 20px; }
  .hero { padding-top: 100px; }
  .how-it-works, .demonstration, .audience, .under-the-hood { padding: var(--section-pad-sm) 24px; }
  .nav { padding: 16px 24px; }
}

@media (max-width: 600px) {
  .hero-headline { font-size: 42px; }
  .hero-sub { font-size: 16px; }
  .composition-name { font-size: 22px; }
}