/* ===========================================
   BREAKOUT - AI-Powered Track Analysis Tool
   Design: Dark mode with neon accents
   =========================================== */

/* CSS Variables */
:root {
  /* Background Colors */
  --bg-primary: #0A0A0F;
  --bg-secondary: #111118;
  --bg-card: rgba(17, 17, 24, 0.8);
  --bg-glass: rgba(17, 17, 24, 0.6);

  /* Text Colors */
  --text-primary: #FFFFFF;
  --text-secondary: #A1A1AA;
  --text-muted: #71717A;

  /* Accent Colors */
  --violet: #8B5CF6;
  --violet-dark: #7C3AED;
  --cyan: #06B6D4;
  --pink: #EC4899;
  --emerald: #10B981;
  --amber: #F59E0B;
  --red: #EF4444;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #8B5CF6 0%, #06B6D4 100%);
  --gradient-pink-violet: linear-gradient(135deg, #EC4899 0%, #8B5CF6 100%);
  --gradient-cyan-emerald: linear-gradient(135deg, #06B6D4 0%, #10B981 100%);

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-glow-violet: 0 0 20px rgba(139, 92, 246, 0.3);
  --shadow-glow-cyan: 0 0 20px rgba(6, 182, 212, 0.3);
  --shadow-glow-pink: 0 0 20px rgba(236, 72, 153, 0.3);

  /* Border */
  --border-color: rgba(255, 255, 255, 0.1);

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms 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-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Background Gradient Overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 20% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.25rem; }
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

@media (max-width: 640px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--spacing-md) 0;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 800;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.nav {
  display: flex;
  gap: var(--spacing-lg);
}

.nav a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

@media (max-width: 640px) {
  .nav {
    display: none;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition-normal);
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-violet), var(--shadow-md);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--violet);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.125rem;
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: rgba(139, 92, 246, 0.3);
  box-shadow: var(--shadow-md);
}

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

/* Main Content */
main {
  padding-top: 80px;
  min-height: 100vh;
}

/* Hero Section */
.hero {
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* How It Works Section */
.how-it-works {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title h2 {
  margin-bottom: var(--spacing-sm);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

@media (max-width: 768px) {
  .steps-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

.step-card {
  text-align: center;
  padding: var(--spacing-2xl);
}

.step-number {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-lg);
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
}

.step-card h3 {
  margin-bottom: var(--spacing-sm);
}

.step-card p {
  color: var(--text-secondary);
}

/* Features Section */
.features {
  padding: var(--spacing-3xl) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  display: flex;
  gap: var(--spacing-lg);
}

.feature-icon {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.feature-icon.violet { color: var(--violet); }
.feature-icon.cyan { color: var(--cyan); }
.feature-icon.pink { color: var(--pink); }
.feature-icon.emerald { color: var(--emerald); }

.feature-content h4 {
  margin-bottom: var(--spacing-xs);
}

.feature-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Upload Page */
.upload-page {
  padding: var(--spacing-3xl) 0;
}

.upload-container {
  max-width: 700px;
  margin: 0 auto;
}

.upload-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

/* Drop Zone */
.drop-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-3xl);
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
  background: var(--bg-card);
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--violet);
  background: rgba(139, 92, 246, 0.05);
}

.drop-zone-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.drop-zone h3 {
  margin-bottom: var(--spacing-sm);
}

.drop-zone p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.file-types {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
}

.file-type {
  background: var(--bg-secondary);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.file-input {
  display: none;
}

/* File Preview */
.file-preview {
  display: none;
  margin-top: var(--spacing-xl);
}

.file-preview.active {
  display: block;
}

.file-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
}

.file-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-pink-violet);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.file-details {
  flex: 1;
}

.file-name {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.file-meta {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.file-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.5rem;
  padding: var(--spacing-sm);
  transition: color var(--transition-fast);
}

.file-remove:hover {
  color: var(--red);
}

/* Waveform Placeholder */
.waveform-placeholder {
  margin-top: var(--spacing-md);
  height: 60px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
}

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

@keyframes waveform {
  0%, 100% { height: 20%; }
  50% { height: 80%; }
}

/* Analyze Button */
.analyze-section {
  margin-top: var(--spacing-xl);
  text-align: center;
}

.analyze-btn {
  min-width: 200px;
}

/* Loading State */
.loading-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.95);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.loading-overlay.active {
  display: flex;
}

.loading-content {
  text-align: center;
}

.loading-spinner {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-xl);
  border: 4px solid var(--bg-secondary);
  border-top-color: var(--violet);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-text {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.loading-subtext {
  color: var(--text-secondary);
}

/* Results Page */
.results-page {
  padding: var(--spacing-2xl) 0 var(--spacing-3xl);
}

.results-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.track-title {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-sm);
}

/* Viral Score Section */
.viral-score-section {
  margin-bottom: var(--spacing-2xl);
}

.viral-score-card {
  text-align: center;
  padding: var(--spacing-2xl);
}

.gauge-container {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto var(--spacing-lg);
}

.gauge-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.gauge-bg {
  fill: none;
  stroke: var(--bg-secondary);
  stroke-width: 12;
}

.gauge-fill {
  fill: none;
  stroke: url(#gaugeGradient);
  stroke-width: 12;
  stroke-linecap: round;
  stroke-dasharray: 565.48;
  stroke-dashoffset: 565.48;
  transition: stroke-dashoffset 1.5s ease-out;
}

.gauge-value {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.gauge-number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gauge-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.viral-category {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: var(--spacing-md);
}

.viral-category.high { color: var(--emerald); }
.viral-category.medium { color: var(--amber); }
.viral-category.low { color: var(--red); }

/* Track Metadata */
.track-metadata {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-xl);
}

.metadata-tag {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
}

.metadata-tag .icon { opacity: 0.7; }

/* Platform Fit Section */
.platform-fit-section {
  margin-bottom: var(--spacing-2xl);
}

.platform-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

@media (max-width: 1024px) {
  .platform-cards {
    grid-template-columns: 1fr;
  }
}

.platform-card {
  display: flex;
  flex-direction: column;
}

.platform-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.platform-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.platform-icon.tiktok { background: linear-gradient(135deg, #00f2ea, #ff0050); }
.platform-icon.spotify { background: #1DB954; }
.platform-icon.youtube { background: #FF0000; }

.platform-name {
  font-weight: 600;
}

.platform-score-bar {
  height: 8px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.platform-score-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

.platform-score-fill.tiktok { background: linear-gradient(90deg, #00f2ea, #ff0050); }
.platform-score-fill.spotify { background: #1DB954; }
.platform-score-fill.youtube { background: #FF0000; }

.platform-score-text {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.platform-reasoning {
  color: var(--text-secondary);
  font-size: 0.9rem;
  flex: 1;
}

/* Hooks Section */
.hooks-section {
  margin-bottom: var(--spacing-2xl);
}

.hooks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.hook-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.hook-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-pink-violet);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hook-time {
  font-weight: 600;
  font-size: 0.9rem;
}

.hook-description {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Release Strategy Section */
.release-section {
  margin-bottom: var(--spacing-2xl);
}

.release-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

@media (max-width: 768px) {
  .release-grid {
    grid-template-columns: 1fr;
  }
}

.release-card {
  padding: var(--spacing-xl);
}

.release-card h4 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  color: var(--cyan);
}

.release-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.release-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Comparable Tracks */
.comparable-tracks {
  margin-top: var(--spacing-lg);
}

.comparable-track {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
}

.comparable-track:last-child {
  margin-bottom: 0;
}

.comparable-rank {
  width: 30px;
  height: 30px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
}

.comparable-info {
  flex: 1;
}

.comparable-title {
  font-weight: 600;
  font-size: 0.9rem;
}

.comparable-artist {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* Results Actions */
.results-actions {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

/* Footer */
.footer {
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer-content {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer a {
  color: var(--violet);
}

.footer a:hover {
  text-decoration: underline;
}

/* Error State */
.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--red);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

/* Utility Classes */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeIn 0.5s ease-out;
}

/* Section Headers */
.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-header h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-header h3 .icon {
  color: var(--violet);
}