/* GMCPlayer Developer Website Design System */
:root {
  --bg-dark: #0a0b10;
  --bg-card: rgba(18, 22, 34, 0.7);
  --bg-card-hover: rgba(26, 32, 50, 0.85);
  --accent-cyan: #00e5ff;
  --accent-cyan-glow: rgba(0, 229, 255, 0.35);
  --accent-purple: #7c4dff;
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 229, 255, 0.25);
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Ambient Glows */
body::before {
  content: '';
  position: fixed;
  top: -20%;
  left: 20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-cyan-glow) 0%, transparent 70%);
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  bottom: -10%;
  right: 10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(124, 77, 255, 0.2) 0%, transparent 70%);
  filter: blur(140px);
  z-index: -1;
  pointer-events: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 11, 16, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px var(--accent-cyan-glow);
}

.logo-icon svg {
  width: 24px;
  height: 24px;
  fill: #fff;
}

.logo-text {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}

.logo-text span {
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  transition: color 0.2s ease;
}

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

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent-cyan), #00b0ff);
  color: #050b14;
  padding: 10px 22px;
  border-radius: 30px;
  font-weight: 700;
  text-decoration: none;
  font-size: 14px;
  box-shadow: 0 4px 20px var(--accent-cyan-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(0, 229, 255, 0.5);
}

/* Hero Section */
.hero {
  padding: 90px 0 60px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--border-glow);
  padding: 6px 18px;
  border-radius: 20px;
  color: var(--accent-cyan);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
}

.play-store-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #1e293b;
  border: 1px solid var(--border-color);
  padding: 12px 24px;
  border-radius: 12px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.play-store-btn:hover {
  border-color: var(--accent-cyan);
  background: #243147;
  transform: translateY(-2px);
}

.play-store-btn svg {
  width: 24px;
  height: 24px;
  fill: var(--accent-cyan);
}

/* App Mockup Frame */
.hero-mockup {
  position: relative;
  max-width: 320px;
  margin: 0 auto;
  border-radius: 36px;
  padding: 12px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border-glow);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7), 0 0 40px var(--accent-cyan-glow);
}

.screen-card {
  background: #0d0e15;
  border-radius: 28px;
  padding: 24px;
  text-align: left;
}

.mock-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.mock-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--accent-cyan);
}

.mock-subtitle {
  font-size: 11px;
  color: var(--text-muted);
}

.visualizer-bars {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 45px;
  margin: 16px 0;
  background: rgba(0, 229, 255, 0.05);
  padding: 8px;
  border-radius: 12px;
  border: 1px solid rgba(0, 229, 255, 0.15);
}

.v-bar {
  flex: 1;
  background: linear-gradient(to top, var(--accent-purple), var(--accent-cyan));
  border-radius: 4px;
  animation: bounce 1.2s infinite ease-in-out alternate;
}

.v-bar:nth-child(2) { animation-delay: 0.2s; }
.v-bar:nth-child(3) { animation-delay: 0.4s; }
.v-bar:nth-child(4) { animation-delay: 0.1s; }
.v-bar:nth-child(5) { animation-delay: 0.5s; }
.v-bar:nth-child(6) { animation-delay: 0.3s; }
.v-bar:nth-child(7) { animation-delay: 0.6s; }

@keyframes bounce {
  0% { height: 20%; }
  100% { height: 95%; }
}

.vinyl-disk {
  width: 140px;
  height: 140px;
  margin: 20px auto;
  border-radius: 50%;
  background: radial-gradient(circle, #333 15%, #111 30%, #222 45%, #111 60%, #000 80%);
  border: 3px solid var(--accent-cyan);
  box-shadow: 0 0 20px var(--accent-cyan-glow);
  animation: spin 8s linear infinite;
}

@keyframes spin {
  100% { transform: rotate(360deg); }
}

/* Features Grid */
.features {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 16px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  padding: 32px;
  border-radius: 20px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.feature-icon {
  width: 52px;
  height: 52px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--border-glow);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* User Guide Section */
.user-guide-section {
  padding: 90px 0;
  background: rgba(18, 22, 34, 0.4);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 32px;
  transition: all 0.3s ease;
}

.guide-card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.guide-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.guide-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent-cyan);
  opacity: 0.8;
  font-family: monospace;
}

.guide-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.guide-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.guide-list li {
  position: relative;
  padding-left: 20px;
}

.guide-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
  font-weight: bold;
}

.guide-list ul {
  list-style: none;
  margin-top: 8px;
  padding-left: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.guide-list code {
  background: rgba(0, 229, 255, 0.12);
  color: var(--accent-cyan);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 13px;
}

/* Developer Support Section */
.developer-section {
  padding: 80px 0;
}

.developer-card {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(124, 77, 255, 0.1));
  border: 1px solid var(--border-glow);
  border-radius: 24px;
  padding: 40px;
  text-align: center;
}

.developer-info h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.developer-info p {
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 28px;
  font-size: 16px;
}

.dev-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.dev-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  color: #fff;
  padding: 14px 28px;
  border-radius: 30px;
  font-weight: 700;
  text-decoration: none;
  font-size: 15px;
  box-shadow: 0 4px 20px rgba(124, 77, 255, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.dev-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(0, 229, 255, 0.5);
}

.support-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}

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

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

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

/* Responsive Styles */
@media (max-width: 768px) {
  .hero h1 { font-size: 38px; }
  .nav-links { display: none; }
  .guide-grid { grid-template-columns: 1fr; }
}