/* ============================================
   Loomdraft Landing Page
   ============================================ */

:root {
  --bg-deep: #0f0e1a;
  --bg-main: #1a1a2e;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --text: #e4e4ec;
  --text-dim: #9a9ab0;
  --accent: #7b6ef6;
  --accent-warm: #f0a050;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --max-width: 1100px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.85; }

/* ---- Section shared ---- */
.section-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section-sub {
  text-align: center;
  color: var(--text-dim);
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(123, 110, 246, 0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 80%, rgba(240, 160, 80, 0.1) 0%, transparent 60%),
              var(--bg-deep);
  animation: heroPulse 12s ease-in-out infinite alternate;
  z-index: 0;
}

@keyframes heroPulse {
  0%   { opacity: 1; }
  50%  { opacity: 0.7; }
  100% { opacity: 1; }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin-bottom: 1.5rem;
  filter: drop-shadow(0 0 40px rgba(123, 110, 246, 0.3));
  animation: logoFloat 6s ease-in-out infinite;
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 50%, var(--accent-warm) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
}

.hero-tagline {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-dim);
  margin-bottom: 2.5rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  border: none;
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
  opacity: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-warm));
  color: #fff;
  box-shadow: 0 4px 20px rgba(123, 110, 246, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 30px rgba(123, 110, 246, 0.45);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* ============================================
   FEATURES
   ============================================ */
.features {
  padding: 6rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s;
}

.feature-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(123, 110, 246, 0.15), rgba(240, 160, 80, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--accent);
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ============================================
   THEMES
   ============================================ */
.themes {
  padding: 5rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.themes-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.theme-card {
  text-align: center;
}

.theme-preview {
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  aspect-ratio: 16 / 11;
  border: 1px solid var(--border);
  transition: transform 0.25s, box-shadow 0.25s;
}

.theme-card:hover .theme-preview {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.theme-name {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dim);
}

/* Mock UI inside theme previews */
.theme-mock-sidebar {
  width: 30%;
  padding: 10% 6%;
  display: flex;
  flex-direction: column;
  gap: 6%;
}

.theme-mock-editor {
  flex: 1;
  padding: 10% 8%;
  display: flex;
  flex-direction: column;
  gap: 6%;
}

.mock-item {
  height: 6px;
  border-radius: 3px;
  width: 80%;
}

.mock-item.indent {
  width: 65%;
  margin-left: 15%;
}

.mock-heading {
  height: 8px;
  border-radius: 3px;
  width: 50%;
  margin-bottom: 4%;
}

.mock-line {
  height: 4px;
  border-radius: 2px;
}

.mock-line.w95 { width: 95%; }
.mock-line.w85 { width: 85%; }
.mock-line.w80 { width: 80%; }
.mock-line.w70 { width: 70%; }
.mock-line.w60 { width: 60%; }

/* -- Theme: Dark -- */
.theme-dark {
  background: #1e1e2e;
}
.theme-dark .theme-mock-sidebar {
  background: #181825;
}
.theme-dark .mock-item { background: #313244; }
.theme-dark .mock-item.active { background: #7b6ef6; }
.theme-dark .mock-heading { background: #cdd6f4; }
.theme-dark .mock-line { background: #45475a; }

/* -- Theme: Midnight Jazz -- */
.theme-midnight {
  background: #101828;
}
.theme-midnight .theme-mock-sidebar {
  background: #0c1220;
}
.theme-midnight .mock-item { background: #1e2a3a; }
.theme-midnight .mock-item.active { background: #d4a843; }
.theme-midnight .mock-heading { background: #c8cdd5; }
.theme-midnight .mock-line { background: #1e2a3a; }

/* -- Theme: Forest Canopy -- */
.theme-forest {
  background: #1a2418;
}
.theme-forest .theme-mock-sidebar {
  background: #141d12;
}
.theme-forest .mock-item { background: #2a3a28; }
.theme-forest .mock-item.active { background: #8fae5f; }
.theme-forest .mock-heading { background: #c4d1b8; }
.theme-forest .mock-line { background: #2a3a28; }

/* -- Theme: Sepia Study -- */
.theme-sepia {
  background: #f4ead5;
}
.theme-sepia .theme-mock-sidebar {
  background: #e8dcc4;
}
.theme-sepia .mock-item { background: #d4c4a8; }
.theme-sepia .mock-item.active { background: #8b6914; }
.theme-sepia .mock-heading { background: #5c4a2a; }
.theme-sepia .mock-line { background: #d4c4a8; }

/* ============================================
   DOWNLOAD
   ============================================ */
.download {
  padding: 6rem 2rem;
  text-align: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.download-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.btn-download {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
  min-width: 200px;
}

.btn-download:hover {
  transform: translateY(-3px);
  background: var(--bg-card-hover);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
  border-color: var(--accent);
  opacity: 1;
}

.btn-download.highlighted {
  border-color: var(--accent);
  background: rgba(123, 110, 246, 0.08);
}

.btn-download.disabled {
  opacity: 0.4;
  pointer-events: none;
  cursor: default;
}

.btn-download-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.btn-download-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  line-height: 1;
}

.btn-download-os {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.3;
}

.download-meta {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.download-note {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 1.5rem;
  line-height: 1.6;
}

.download-note code {
  background: rgba(255, 255, 255, 0.06);
  padding: 0.2em 0.5em;
  border-radius: 4px;
  font-size: 0.75rem;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 3rem 2rem;
  text-align: center;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer a {
  color: var(--text-dim);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer a:hover {
  color: var(--text);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .themes-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .download-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn-download {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  .hero {
    min-height: 90vh;
    padding: 4rem 1.5rem 2rem;
  }

  .hero-logo {
    width: 90px;
    height: 90px;
  }
}

@media (max-width: 480px) {
  .themes-strip {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .features, .themes, .download {
    padding: 4rem 1.25rem;
  }
}