/* Song Finder Homepage Styles */

/* CSS Variables */
:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --accent-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --bg-primary: #f8fafc;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --border-color: #e2e8f0;
  --success: #10b981;
  --error: #ef4444;
  --spotify: #1DB954;
  --youtube: #FF0000;
  --deezer: #FF0092;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--bg-white);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: #667eea;
  color: #667eea;
}

.btn-chrome {
  background: var(--bg-white);
  color: var(--text-primary);
  padding: 16px 32px;
  font-size: 16px;
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.btn-chrome:hover {
  border-color: #4285f4;
  background: #4285f4;
  color: white;
}

.btn-chrome svg {
  width: 24px;
  height: 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 20px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: #667eea;
}

.nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Language Selector */
.language-selector {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.lang-btn:hover {
  border-color: #667eea;
}

.lang-btn svg {
  width: 18px;
  height: 18px;
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 150px;
  overflow: hidden;
  z-index: 50;
}

.lang-dropdown.hidden {
  display: none;
}

.lang-dropdown a {
  display: block;
  width: 100%;
  padding: 10px 16px;
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition);
}

.lang-dropdown a:hover {
  background: var(--bg-primary);
}

.lang-dropdown a.active {
  background: var(--bg-primary);
  color: #667eea;
  font-weight: 500;
}

/* Hero Section */
.hero {
  padding: 60px 0 40px;
  text-align: center;
}

.hero-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  margin-bottom: 16px;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

/* Identification Card */
.identify-card {
  max-width: 500px;
  margin: 0 auto;
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
}

.tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
}

.tab svg {
  width: 20px;
  height: 20px;
}

.tab:hover {
  color: var(--text-primary);
  background: var(--bg-primary);
}

.tab.active {
  color: #667eea;
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  border-radius: 3px 3px 0 0;
}

/* Tab Content */
.tab-content {
  padding: 40px 30px;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Record Area */
.record-area {
  text-align: center;
}

.record-btn {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: var(--primary-gradient);
  border: none;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
  margin: 0 auto 24px;
}

.record-btn:hover {
  transform: scale(1.05);
}

.record-btn.recording {
  animation: pulse-bg 2s infinite;
}

.record-btn-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.record-btn svg {
  width: 48px;
  height: 48px;
  color: white;
  position: relative;
  z-index: 2;
}

.pulse-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.3);
  opacity: 0;
}

.record-btn.recording .pulse-ring {
  animation: pulse-ring 2s infinite;
}

.record-btn.recording .pulse-ring.delay-1 {
  animation-delay: 0.5s;
}

.record-btn.recording .pulse-ring.delay-2 {
  animation-delay: 1s;
}

@keyframes pulse-ring {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}

@keyframes pulse-bg {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.4);
  }
  50% {
    box-shadow: 0 0 0 20px rgba(102, 126, 234, 0);
  }
}

.hum-btn {
  background: var(--accent-gradient);
}

.record-hint {
  color: var(--text-secondary);
  font-size: 15px;
}

/* Waveform */
.waveform {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 60px;
  margin: 20px 0;
}

.waveform.hidden {
  display: none;
}

.waveform span {
  width: 4px;
  height: 20px;
  background: var(--primary-gradient);
  border-radius: 2px;
  animation: wave 1s infinite ease-in-out;
}

.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: 0.4s; }
.waveform span:nth-child(8) { animation-delay: 0.3s; }
.waveform span:nth-child(9) { animation-delay: 0.2s; }
.waveform span:nth-child(10) { animation-delay: 0.1s; }

@keyframes wave {
  0%, 100% {
    height: 20px;
  }
  50% {
    height: 50px;
  }
}

.listening-text {
  color: #667eea;
  font-weight: 600;
  font-size: 16px;
}

.listening-text.hidden {
  display: none;
}

/* Upload Area */
.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 20px;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.upload-area:hover,
.upload-area.dragover {
  border-color: #667eea;
  background: rgba(102, 126, 234, 0.05);
}

.upload-icon {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.upload-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.upload-hint {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 12px;
}

.upload-formats {
  font-size: 12px;
  color: var(--text-muted);
}

.file-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.file-info.hidden {
  display: none;
}

.file-info svg {
  width: 24px;
  height: 24px;
  color: #667eea;
}

.file-info span {
  flex: 1;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.remove-file {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--border-color);
  border: none;
  cursor: pointer;
  font-size: 18px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.remove-file:hover {
  background: var(--error);
  color: white;
}

.btn-upload {
  width: 100%;
}

.btn-upload.hidden {
  display: none;
}

/* Processing State */
.processing {
  text-align: center;
  padding: 40px;
}

.processing.hidden {
  display: none;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border-color);
  border-top-color: #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 16px;
}

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

/* Result Section */
.result-section {
  max-width: 600px;
  margin: 40px auto 0;
}

.result-section.hidden {
  display: none;
}

.result-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 30px;
  text-align: center;
}

.result-album {
  width: 180px;
  height: 180px;
  margin: 0 auto 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.result-album img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.result-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.result-artist {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.result-album-name {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.result-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.platform-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
}

.platform-link svg {
  width: 18px;
  height: 18px;
}

.platform-link.spotify {
  background: rgba(29, 185, 84, 0.1);
  color: var(--spotify);
}

.platform-link.spotify:hover {
  background: var(--spotify);
  color: white;
}

.platform-link.youtube {
  background: rgba(255, 0, 0, 0.1);
  color: var(--youtube);
}

.platform-link.youtube:hover {
  background: var(--youtube);
  color: white;
}

.platform-link.deezer {
  background: rgba(255, 0, 146, 0.1);
  color: var(--deezer);
}

.platform-link.deezer:hover {
  background: var(--deezer);
  color: white;
}

/* Lyrics Section */
.lyrics-section {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: 24px;
  margin-top: 20px;
  text-align: left;
}

.lyrics-section h3 {
  font-size: 16px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.lyrics-content {
  max-height: 150px;
  overflow: hidden;
  transition: var(--transition);
}

.lyrics-content.expanded {
  max-height: none;
}

#lyricsText {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  white-space: pre-line;
}

.btn-expand {
  margin-top: 16px;
  background: transparent;
  border: none;
  color: #667eea;
  font-weight: 500;
  cursor: pointer;
  font-size: 14px;
}

.btn-expand:hover {
  text-decoration: underline;
}

/* No Match State */
.no-match {
  max-width: 400px;
  margin: 40px auto 0;
  text-align: center;
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.no-match.hidden {
  display: none;
}

.no-match svg {
  width: 64px;
  height: 64px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.no-match h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.no-match p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* History Section */
.history-section {
  padding: 60px 0;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-header h2 {
  font-size: 24px;
  font-weight: 700;
}

.btn-clear {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  transition: var(--transition);
}

.btn-clear:hover {
  color: var(--error);
}

.history-scroll {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding: 8px 0;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.history-scroll::-webkit-scrollbar {
  height: 8px;
}

.history-scroll::-webkit-scrollbar-track {
  background: var(--bg-primary);
  border-radius: 4px;
}

.history-scroll::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

.history-item {
  flex-shrink: 0;
  width: 160px;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  cursor: pointer;
  scroll-snap-align: start;
  transition: var(--transition);
}

.history-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.history-item-art {
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
}

.history-item-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.history-item-info {
  padding: 12px;
}

.history-item-title {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}

.history-item-artist {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-empty {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.history-empty.hidden {
  display: none;
}

/* Features Section */
.features-section {
  padding: 60px 0;
  background: var(--bg-white);
}

.features-section h2 {
  text-align: center;
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.feature-card {
  text-align: center;
  padding: 32px;
}

.feature-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.feature-icon svg {
  width: 36px;
  height: 36px;
  color: white;
}

.record-icon {
  background: var(--primary-gradient);
}

.hum-icon {
  background: var(--accent-gradient);
}

.upload-icon-feature {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.feature-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 15px;
}

/* Extension Section */
.extension-section {
  padding: 80px 0;
}

.extension-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  background: var(--primary-gradient);
  border-radius: var(--radius-xl);
  padding: 60px;
  color: white;
}

.extension-info h2 {
  font-size: 32px;
  margin-bottom: 16px;
}

.extension-info p {
  opacity: 0.9;
  margin-bottom: 24px;
}

.extension-features {
  list-style: none;
  margin-bottom: 32px;
}

.extension-features li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
}

.extension-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #10b981;
  font-weight: 700;
}

.extension-preview {
  display: flex;
  justify-content: center;
}

.browser-mockup {
  width: 320px;
  background: #1a202c;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.browser-header {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  background: #2d3748;
}

.browser-header span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #4a5568;
}

.browser-header span:first-child {
  background: #fc8181;
}

.browser-header span:nth-child(2) {
  background: #fbd38d;
}

.browser-header span:nth-child(3) {
  background: #68d391;
}

.browser-content {
  padding: 20px;
  display: flex;
  justify-content: flex-end;
}

.ext-popup {
  width: 200px;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  color: var(--text-primary);
}

.ext-popup-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 16px;
}

.ext-popup-header svg {
  width: 20px;
  height: 20px;
  color: #667eea;
}

.ext-popup-wave {
  display: flex;
  justify-content: center;
  gap: 3px;
  margin-bottom: 12px;
}

.ext-popup-wave span {
  width: 3px;
  height: 20px;
  background: var(--primary-gradient);
  border-radius: 2px;
  animation: wave 1s infinite ease-in-out;
}

.ext-popup-wave span:nth-child(1) { animation-delay: 0s; }
.ext-popup-wave span:nth-child(2) { animation-delay: 0.1s; }
.ext-popup-wave span:nth-child(3) { animation-delay: 0.2s; }
.ext-popup-wave span:nth-child(4) { animation-delay: 0.3s; }
.ext-popup-wave span:nth-child(5) { animation-delay: 0.4s; }

.ext-popup p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Footer */
.footer {
  background: var(--bg-white);
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand .logo {
  margin-bottom: 8px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
}

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

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #667eea;
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 14px;
}

/* Utility */
.hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
  .header .container {
    height: 60px;
  }

  .nav .btn {
    padding: 8px 16px;
    font-size: 13px;
  }

  .hero {
    padding: 40px 0 20px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .identify-card {
    margin: 0 -10px;
    border-radius: var(--radius-lg);
  }

  .tab span {
    display: none;
  }

  .tab svg {
    width: 24px;
    height: 24px;
  }

  .record-btn {
    width: 120px;
    height: 120px;
  }

  .record-btn svg {
    width: 40px;
    height: 40px;
  }

  .result-card {
    padding: 24px;
  }

  .result-album {
    width: 140px;
    height: 140px;
  }

  .result-title {
    font-size: 20px;
  }

  .extension-card {
    grid-template-columns: 1fr;
    padding: 40px 24px;
    text-align: center;
  }

  .extension-preview {
    display: none;
  }

  .features-section h2 {
    font-size: 24px;
  }

  .section-header h2 {
    font-size: 20px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }
}

/* RTL Support */
html[dir="rtl"] {
  direction: rtl;
}

html[dir="rtl"] .lang-dropdown {
  right: auto;
  left: 0;
}

html[dir="rtl"] .extension-features li {
  padding-left: 0;
  padding-right: 28px;
}

html[dir="rtl"] .extension-features li::before {
  left: auto;
  right: 0;
}