@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;800&family=Outfit:wght@400;700;900&display=swap');

:root {
  --bg-color: #050510;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  
  --hero-glow: rgba(139, 92, 246, 0.15);
  --feature-glow: rgba(6, 182, 212, 0.1);
  --nav-bg: rgba(5, 5, 16, 0.8);
  --card-bg: rgba(255, 255, 255, 0.02);
  --card-hover-bg: rgba(255, 255, 255, 0.05);
  --btn-hover-bg: rgba(255, 255, 255, 0.1);
  --shadow-color: rgba(0, 0, 0, 0.4);
}

[data-theme="light"] {
  --bg-color: #f8fafc;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(0, 0, 0, 0.08);
  
  --hero-glow: rgba(139, 92, 246, 0.1);
  --feature-glow: rgba(6, 182, 212, 0.08);
  --nav-bg: rgba(248, 250, 252, 0.8);
  --card-bg: rgba(0, 0, 0, 0.02);
  --card-hover-bg: rgba(0, 0, 0, 0.05);
  --btn-hover-bg: rgba(0, 0, 0, 0.08);
  --shadow-color: rgba(0, 0, 0, 0.1);
}

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

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

h1, h2, h3, h4 {
  font-family: 'Outfit', sans-serif;
}

/* Typography */
.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

/* Navigation */
nav {
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
}

.logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  margin-left: 2rem;
  font-weight: 600;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.theme-toggle {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  margin-left: 2rem;
  transition: color 0.3s ease, transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  color: var(--text-primary);
  transform: scale(1.1);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 5% 2rem;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--hero-glow) 0%, transparent 70%);
  z-index: -1;
  border-radius: 50%;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 2.5rem;
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--accent-gradient);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(6, 182, 212, 0.3);
}

/* Products Section */
.products {
  padding: 5rem 5%;
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 4rem;
}

/* Chords Feature */
.chords-feature {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
  max-width: 1200px;
  margin: 0 auto;
}

.chords-feature::after {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--feature-glow) 0%, transparent 70%);
  z-index: -1;
  border-radius: 50%;
}

.product-image-container {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 40px var(--shadow-color);
  position: relative;
  aspect-ratio: 1;
}

.product-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-image-container:hover img {
  transform: scale(1.05);
}

.feature-content h3 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  line-height: 1.1;
}

.feature-content .price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}

.feature-list {
  list-style: none;
  margin: 2rem 0;
}

.feature-list li {
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  color: var(--text-secondary);
}

.feature-list li::before {
  content: '✦';
  color: var(--accent-purple);
  margin-right: 0.75rem;
  font-size: 1.2rem;
}

.feature-list li strong {
  color: var(--text-primary);
  margin-right: 0.5rem;
}

.instruments-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.5rem 0 2.5rem;
}

.instrument-card {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  padding: 1rem;
  border-radius: 12px;
  text-align: center;
  transition: background 0.3s ease;
}

.instrument-card:hover {
  background: var(--card-hover-bg);
}

.instrument-card .name {
  font-weight: 600;
  color: var(--text-primary);
  display: block;
}

.instrument-card .tuning {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Footer */
footer {
  text-align: center;
  padding: 4rem 5%;
  border-top: 1px solid var(--glass-border);
  margin-top: 4rem;
}

footer p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

footer a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

@media (max-width: 900px) {
  .chords-feature {
    grid-template-columns: 1fr;
    padding: 2.5rem;
    gap: 3rem;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
}

/* More Apps Grid */
.more-apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 5rem;
  max-width: 1200px;
  margin-inline: auto;
}

.app-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, background 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.app-card:hover {
  transform: translateY(-5px);
  background: var(--card-hover-bg);
}

.app-icon {
  width: 100px;
  height: 100px;
  border-radius: 22px;
  margin-bottom: 1.5rem;
  object-fit: cover;
  box-shadow: 0 10px 20px var(--shadow-color);
}

.app-card h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.app-card .platform {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.app-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.app-card .btn-small {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  background: var(--card-hover-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.app-card .btn-small:hover {
  background: var(--btn-hover-bg);
  border-color: var(--accent-purple);
}