/* ============================================================
   Good Ear Website — style.css
   Modern, warm dark theme.
   ============================================================ */

/* --- Self-hosted Fonts (no external requests) --- */

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
  src: url('/assets/fonts/plus-jakarta-sans.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
  src: url('/assets/fonts/inter.woff2') format('woff2');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono.woff') format('woff');
}

/* --- Custom Properties --- */

:root {
  /* Warm dark palette */
  --color-bg:            #161618;
  --color-bg-warm:       #1c1c1f;
  --color-surface:       rgba(255, 255, 255, 0.04);
  --color-surface-hover: rgba(255, 255, 255, 0.07);
  --color-border:        rgba(255, 255, 255, 0.08);
  --color-border-hover:  rgba(255, 255, 255, 0.15);
  --color-text:          #ececee;
  --color-text-muted:    #9a9aa0;
  --color-text-soft:     #b8b8be;

  /* Mode accent colors from the app */
  --color-intervals:     #03D55C;
  --color-chords:        #5EC4FF;
  --color-scales:        #E8B830;
  --color-melodies:      #FF4757;

  /* Primary accent */
  --color-accent:        #03D55C;
  --color-accent-hover:  #2AE87A;
  --color-accent-soft:   rgba(3, 213, 92, 0.12);

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Layout */
  --content-width: 720px;
  --spacing-xs:  8px;
  --spacing-sm:  16px;
  --spacing-md:  24px;
  --spacing-lg:  48px;
  --spacing-xl:  72px;
  --radius:      12px;
  --radius-lg:   16px;
}

/* --- Reset --- */

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

/* --- Base --- */

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  background-image:
    radial-gradient(ellipse at 50% -10%, rgba(3, 213, 92, 0.07) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(94, 196, 255, 0.03) 0%, transparent 40%),
    radial-gradient(ellipse at 20% 80%, rgba(232, 184, 48, 0.03) 0%, transparent 40%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- Typography --- */

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-text);
}

h1 { font-size: 2.2rem; }
h2 { font-size: 1.5rem; margin-top: var(--spacing-xl); margin-bottom: var(--spacing-md); }
h3 { font-size: 1.05rem; margin-top: var(--spacing-md); margin-bottom: var(--spacing-xs); }

p {
  margin-bottom: var(--spacing-sm);
}

strong {
  font-weight: 600;
}

/* --- Links --- */

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

a:hover {
  color: var(--color-accent-hover);
}

/* --- Layout --- */

.content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
}

main.content {
  flex: 1;
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-xl);
}

/* --- Hero (Landing Page) --- */

.hero {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
  position: relative;
}

.hero-icon {
  width: 112px;
  height: 112px;
  border-radius: 26px;
  margin-bottom: var(--spacing-md);
  box-shadow:
    0 8px 32px rgba(3, 213, 92, 0.15),
    0 0 64px rgba(3, 213, 92, 0.06);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-xs);
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
}

/* --- Section Labels --- */

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  display: block;
  margin-top: var(--spacing-xl);
}

.section-label:first-child {
  margin-top: 0;
}

/* --- Lead Text --- */

.lead {
  font-size: 1.15rem;
  font-weight: 300;
  color: var(--color-text-soft);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Feature Grid --- */

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-md);
  padding-top: 20px;
  transition: border-color 0.25s ease, background 0.25s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--card-accent, var(--color-border));
  opacity: 0.7;
  transition: opacity 0.25s ease;
}

.feature-card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-surface-hover);
}

.feature-card:hover::before {
  opacity: 1;
}

/* Mode-specific accent colors */
.feature-card.intervals { --card-accent: var(--color-intervals); }
.feature-card.chords    { --card-accent: var(--color-chords); }
.feature-card.scales    { --card-accent: var(--color-scales); }
.feature-card.melodies  { --card-accent: var(--color-melodies); }

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin-top: 0;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.feature-card .mode-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
  position: relative;
  top: -1px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
  line-height: 1.6;
}

/* --- Pricing --- */

.pricing {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-md);
  text-align: center;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.pricing-card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-surface-hover);
}

.pricing-card h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  margin: 0 0 var(--spacing-xs);
}

.pricing-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.6;
}

/* --- Cards (FAQ, Acknowledgements) --- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-surface-hover);
}

.card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-top: 0;
  margin-bottom: var(--spacing-xs);
}

.card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
  line-height: 1.6;
}

.card .card-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
}

/* --- Contact Box & Form --- */

.contact-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.contact-box > p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-muted);
}

.contact-form {
  text-align: left;
  max-width: 480px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-sm);
}

.form-group label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.2);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.05);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.submit-btn {
  display: inline-block;
  margin-top: var(--spacing-xs);
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-bg);
  background: var(--color-accent);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.submit-btn:hover {
  background: var(--color-accent-hover);
  transform: scale(1.02);
}

/* --- Badge (CTA) --- */

.cta {
  text-align: center;
  margin: var(--spacing-lg) 0;
}

.badge-link {
  display: inline-block;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.badge-link:hover {
  transform: scale(1.03);
  opacity: 0.9;
}

.app-store-badge {
  height: 48px;
  width: auto;
}

/* --- Policy / Legal Content --- */

.legal h2 {
  font-size: 1.2rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.legal p, .legal li {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.legal ul {
  list-style: none;
  padding-left: 0;
}

.legal ul li {
  padding-left: var(--spacing-md);
  position: relative;
  margin-bottom: var(--spacing-xs);
}

.legal ul li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.legal .effective-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

/* --- Site Header (Subpages) --- */

.site-header {
  padding: var(--spacing-md) 0;
}

.back-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--color-accent);
}

.back-arrow {
  margin-right: 4px;
}

/* --- Footer --- */

.site-footer {
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  text-align: center;
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-lg);
}

.footer-badge {
  margin-bottom: var(--spacing-md);
}

.footer-nav {
  margin-bottom: var(--spacing-sm);
}

.footer-nav a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}

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

.footer-sep {
  margin: 0 var(--spacing-xs);
  color: rgba(255, 255, 255, 0.15);
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.2);
}

/* --- Responsive --- */

@media (max-width: 600px) {
  .content {
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
  }

  .hero {
    padding-top: var(--spacing-lg);
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-icon {
    width: 88px;
    height: 88px;
    border-radius: 22px;
  }

  h2 {
    font-size: 1.3rem;
  }

  .features {
    grid-template-columns: 1fr;
  }

  .pricing {
    grid-template-columns: 1fr;
  }
}