/* ========================================
   Lofi BGM Player - Late Night Study Aesthetic
   ======================================== */

/* CSS Variables */
:root {
  --color-bg: #0d0d12;
  --color-bg-warm: #12101a;
  --color-surface: rgba(255, 255, 255, 0.03);
  --color-surface-hover: rgba(255, 255, 255, 0.06);
  --color-border: rgba(255, 255, 255, 0.08);

  --color-text: #e8e4f0;
  --color-text-muted: #8b8698;
  --color-text-dim: #5a5465;

  --color-accent: #f4a261;
  --color-accent-soft: #e9c46a;
  --color-purple: #b794f4;
  --color-pink: #f687b3;
  --color-teal: #81e6d9;

  --font-display: 'Space Mono', monospace;
  --font-body: 'Zen Maru Gothic', sans-serif;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Ambient Background */
.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  transition: transform 0.3s ease-out;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #7c3aed 0%, transparent 70%);
  top: -200px;
  right: -100px;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #f4a261 0%, transparent 70%);
  bottom: -150px;
  left: -100px;
  opacity: 0.3;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #e9c46a 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.15;
}

.noise-overlay {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
}

/* Floating Particles */
.particles {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.particles span {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 50%;
  opacity: 0;
  animation: float 15s infinite;
}

.particles span:nth-child(1) { left: 10%; animation-delay: 0s; }
.particles span:nth-child(2) { left: 20%; animation-delay: 1.5s; }
.particles span:nth-child(3) { left: 30%; animation-delay: 3s; }
.particles span:nth-child(4) { left: 40%; animation-delay: 4.5s; }
.particles span:nth-child(5) { left: 50%; animation-delay: 6s; }
.particles span:nth-child(6) { left: 60%; animation-delay: 7.5s; }
.particles span:nth-child(7) { left: 70%; animation-delay: 9s; }
.particles span:nth-child(8) { left: 80%; animation-delay: 10.5s; }
.particles span:nth-child(9) { left: 90%; animation-delay: 12s; }
.particles span:nth-child(10) { left: 95%; animation-delay: 13.5s; }

@keyframes float {
  0% {
    bottom: -10%;
    opacity: 0;
    transform: translateX(0);
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    bottom: 110%;
    opacity: 0;
    transform: translateX(100px);
  }
}

/* Container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 80px 0;
  text-align: center;
}

.hero-content {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 60px;
}

/* Vinyl Player */
.vinyl-player {
  position: relative;
  width: 220px;
  height: 220px;
  flex-shrink: 0;
}

.vinyl {
  width: 100%;
  height: 100%;
  background: conic-gradient(
    from 0deg,
    #1a1a1a 0deg,
    #2a2a2a 30deg,
    #1a1a1a 60deg,
    #2a2a2a 90deg,
    #1a1a1a 120deg,
    #2a2a2a 150deg,
    #1a1a1a 180deg,
    #2a2a2a 210deg,
    #1a1a1a 240deg,
    #2a2a2a 270deg,
    #1a1a1a 300deg,
    #2a2a2a 330deg,
    #1a1a1a 360deg
  );
  border-radius: 50%;
  position: relative;
  animation: spin 8s linear infinite;
  box-shadow:
    0 0 0 3px #333,
    0 0 0 6px #222,
    0 20px 60px rgba(0, 0, 0, 0.5);
}

.vinyl::before {
  content: '';
  position: absolute;
  inset: 20px;
  border-radius: 50%;
  background: repeating-radial-gradient(
    circle at center,
    transparent 0px,
    transparent 2px,
    rgba(255, 255, 255, 0.03) 2px,
    rgba(255, 255, 255, 0.03) 4px
  );
}

.vinyl-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--color-accent) 0%, #e07b4a 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.3);
}

.vinyl-label::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  background: #1a1a1a;
  border-radius: 50%;
}

.vinyl-text {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  color: #1a1a1a;
  letter-spacing: 2px;
  position: absolute;
  top: 12px;
}

.vinyl-arm {
  position: absolute;
  top: -10px;
  right: -30px;
  width: 100px;
  height: 8px;
  background: linear-gradient(90deg, #444 0%, #666 50%, #444 100%);
  border-radius: 4px;
  transform-origin: right center;
  transform: rotate(-25deg);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.vinyl-arm::before {
  content: '';
  position: absolute;
  right: -15px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  background: radial-gradient(circle, #555 0%, #333 100%);
  border-radius: 50%;
  border: 3px solid #444;
}

.vinyl-arm::after {
  content: '';
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 6px;
  background: #888;
  border-radius: 2px;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Hero Text */
.hero-text {
  text-align: left;
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #fff 0%, var(--color-purple) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 320px;
  margin-bottom: 30px;
}

/* Waveform Animation */
.waveform {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 30px;
}

.waveform span {
  width: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  animation: wave 1.2s ease-in-out infinite;
}

.waveform span:nth-child(1) { animation-delay: 0s; }
.waveform span:nth-child(2) { animation-delay: 0.1s; }
.waveform span:nth-child(3) { animation-delay: 0.2s; }
.waveform span:nth-child(4) { animation-delay: 0.3s; }
.waveform span:nth-child(5) { animation-delay: 0.4s; }
.waveform span:nth-child(6) { animation-delay: 0.5s; }
.waveform span:nth-child(7) { animation-delay: 0.6s; }
.waveform span:nth-child(8) { animation-delay: 0.7s; }
.waveform span:nth-child(9) { animation-delay: 0.8s; }
.waveform span:nth-child(10) { animation-delay: 0.9s; }
.waveform span:nth-child(11) { animation-delay: 1s; }
.waveform span:nth-child(12) { animation-delay: 1.1s; }
.waveform span:nth-child(13) { animation-delay: 0.05s; }
.waveform span:nth-child(14) { animation-delay: 0.15s; }
.waveform span:nth-child(15) { animation-delay: 0.25s; }

@keyframes wave {
  0%, 100% { height: 8px; opacity: 0.5; }
  50% { height: 25px; opacity: 1; }
}

/* Download Section */
.download-section {
  text-align: center;
}

.download-label {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 20px;
}

.browser-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.browser-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 14px;
  transition: all 0.3s var(--ease-out-expo);
}

.browser-btn svg {
  width: 20px;
  height: 20px;
}

.browser-btn:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(244, 162, 97, 0.15);
}

.browser-btn.chrome:hover { border-color: #4285f4; box-shadow: 0 10px 30px rgba(66, 133, 244, 0.15); }
.browser-btn.edge:hover { border-color: #0078d4; box-shadow: 0 10px 30px rgba(0, 120, 212, 0.15); }
.browser-btn.firefox:hover { border-color: #ff7139; box-shadow: 0 10px 30px rgba(255, 113, 57, 0.15); }

/* ========================================
   Section Titles
   ======================================== */
.section-title {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 4px;
  text-transform: uppercase;
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.title-decoration {
  color: var(--color-accent);
  font-size: 10px;
}

/* ========================================
   Features Section
   ======================================== */
.features {
  padding: 100px 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 36px 28px;
  transition: all 0.4s var(--ease-out-expo);
  opacity: 0;
  transform: translateY(30px);
}

.feature-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card:nth-child(1) { transition-delay: 0s; }
.feature-card:nth-child(2) { transition-delay: 0.1s; }
.feature-card:nth-child(3) { transition-delay: 0.2s; }
.feature-card:nth-child(4) { transition-delay: 0.3s; }

.feature-card:hover {
  background: var(--color-surface-hover);
  border-color: rgba(244, 162, 97, 0.3);
  transform: translateY(-5px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(244, 162, 97, 0.15) 0%, rgba(183, 148, 244, 0.15) 100%);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}

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

/* ========================================
   Pricing Section
   ======================================== */
.pricing {
  padding: 80px 0 120px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 700px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  padding: 40px 32px;
  position: relative;
  transition: all 0.4s var(--ease-out-expo);
  opacity: 0;
  transform: translateY(30px);
}

.pricing-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.pricing-card:nth-child(1) { transition-delay: 0s; }
.pricing-card:nth-child(2) { transition-delay: 0.15s; }

.pricing-card.featured {
  background: linear-gradient(135deg, rgba(244, 162, 97, 0.08) 0%, rgba(183, 148, 244, 0.08) 100%);
  border-color: rgba(244, 162, 97, 0.3);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-soft) 100%);
  color: var(--color-bg);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 6px 18px;
  border-radius: 20px;
}

.plan-header {
  text-align: center;
  margin-bottom: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--color-border);
}

.plan-name {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 12px;
}

.plan-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.plan-price .currency {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--color-text-muted);
}

.plan-price .amount {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.plan-price .period {
  font-size: 13px;
  color: var(--color-text-dim);
  margin-left: 8px;
}

.plan-features {
  list-style: none;
  margin-bottom: 30px;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--color-text-muted);
}

.plan-features .check {
  color: var(--color-accent);
  font-weight: bold;
}

.plan-btn {
  display: block;
  width: 100%;
  padding: 16px;
  background: var(--color-surface-hover);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 1px;
  text-align: center;
  transition: all 0.3s var(--ease-out-expo);
}

.plan-btn:hover {
  border-color: var(--color-accent);
  background: rgba(244, 162, 97, 0.1);
}

.plan-btn.primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-soft) 100%);
  border: none;
  color: var(--color-bg);
  font-weight: 700;
}

.plan-btn.primary:hover {
  transform: scale(1.02);
  box-shadow: 0 10px 30px rgba(244, 162, 97, 0.3);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: 60px 0;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-logo {
  font-size: 24px;
}

.footer-name {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--color-text);
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  font-size: 13px;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

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

.copyright {
  font-size: 12px;
  color: var(--color-text-dim);
}

/* ========================================
   Page Styles (Legal, Privacy)
   ======================================== */
.page-header {
  padding: 60px 0 40px;
}

.back-link {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s;
}

.back-link:hover {
  opacity: 0.7;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-top: 20px;
  color: var(--color-text);
}

.legal-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 48px;
  margin-bottom: 80px;
}

.legal-content h2 {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 1px;
  color: var(--color-accent);
  margin: 40px 0 16px;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content h3 {
  font-size: 15px;
  color: var(--color-text);
  margin: 24px 0 12px;
}

.legal-content p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.legal-content ul {
  margin-left: 20px;
  margin-bottom: 16px;
}

.legal-content li {
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.legal-content a {
  color: var(--color-accent);
  text-decoration: none;
}

.legal-content a:hover {
  text-decoration: underline;
}

.last-updated {
  font-size: 13px;
  color: var(--color-text-dim);
  margin-bottom: 32px;
}

.legal-table {
  width: 100%;
  border-collapse: collapse;
}

.legal-table th,
.legal-table td {
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

.legal-table th {
  width: 30%;
  color: var(--color-accent);
  font-weight: 400;
  font-size: 14px;
  vertical-align: top;
}

.legal-table td {
  color: var(--color-text-muted);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .hero-content {
    flex-direction: column;
    gap: 40px;
  }

  .hero-text {
    text-align: center;
  }

  .hero-tagline {
    margin-left: auto;
    margin-right: auto;
  }

  .waveform {
    justify-content: center;
  }

  .vinyl-player {
    width: 180px;
    height: 180px;
  }

  .vinyl-label {
    width: 60px;
    height: 60px;
  }

  .vinyl-text {
    font-size: 9px;
    top: 10px;
  }

  .vinyl-arm {
    width: 80px;
    right: -20px;
  }

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

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

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

  .legal-content {
    padding: 28px;
  }

  .legal-table th,
  .legal-table td {
    display: block;
    width: 100%;
  }

  .legal-table th {
    padding-bottom: 6px;
    border-bottom: none;
  }

  .legal-table td {
    padding-top: 0;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 60px 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

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

  .footer-links {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}