/* ========================================
   PITCHER PRO - Modern Audio Studio CSS
   ======================================== */

/* CSS Variables */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a25;
  --bg-card: rgba(26, 26, 37, 0.8);
  --bg-card-hover: rgba(35, 35, 50, 0.9);
  
  --primary: #ff5500;
  --primary-light: #ff7733;
  --primary-dark: #cc4400;
  --primary-glow: rgba(255, 85, 0, 0.3);
  
  --accent-danger: #ff3366;
  --accent-success: #00cc88;
  --accent-info: #3388ff;
  --accent-purple: #9966ff;
  
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.4);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.15);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--primary-glow);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  background-image: 
    radial-gradient(ellipse at top, rgba(255, 85, 0, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(153, 102, 255, 0.05) 0%, transparent 50%);
  color: var(--text-primary);
  font-family: var(--font-family);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ========================================
   LAYOUT
   ======================================== */

.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ========================================
   HEADER
   ======================================== */

.app-header {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-glow);
}

.logo-text h1 {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
}

.header-nav {
  display: flex;
  gap: 0.5rem;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.nav-btn:hover,
.nav-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--text-primary);
  box-shadow: var(--shadow-glow);
}

.nav-btn i {
  font-size: 1rem;
}

.header-actions {
  display: flex;
  gap: 0.5rem;
}

.social-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  color: var(--text-secondary);
  font-size: 1.25rem;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.social-btn:hover {
  background: #ff7700;
  border-color: #ff7700;
  color: white;
  transform: scale(1.05);
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.app-main {
  flex: 1;
  padding: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Tab Content */
.tab-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   UPLOAD ZONE
   ======================================== */

.upload-zone {
  border: 2px dashed var(--border-light);
  border-radius: var(--radius-xl);
  padding: 3rem 2rem;
  text-align: center;
  background: var(--bg-card);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.upload-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-glow), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--primary);
  background: var(--bg-card-hover);
}

.upload-zone:hover::before,
.upload-zone.drag-over::before {
  opacity: 1;
}

.upload-content {
  position: relative;
  z-index: 1;
}

.upload-icon {
  font-size: 4rem;
  color: var(--primary);
  margin-bottom: 1rem;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.upload-zone h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.upload-zone p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.upload-formats {
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  display: inline-block;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ========================================
   FILES PANEL
   ======================================== */

.files-panel,
.recorded-files {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1rem;
  border: 1px solid var(--border-color);
  margin-top: 1rem;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.panel-header h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.panel-header h3 i {
  color: var(--primary);
}

.btn-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--accent-danger);
  border-color: var(--accent-danger);
  color: white;
}

.files-list {
  list-style: none;
  max-height: 200px;
  overflow-y: auto;
}

.files-list::-webkit-scrollbar {
  width: 6px;
}

.files-list::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: 3px;
}

.files-list::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 3px;
}

.files-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  margin: 0.25rem 0;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.files-list li:hover {
  border-color: var(--primary);
  background: var(--bg-card-hover);
}

.files-list li.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: var(--primary-light);
}

.files-list li .file-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.files-list li .file-name i {
  color: var(--primary);
}

.files-list li.active .file-name i {
  color: white;
}

.files-list li .file-duration {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.files-list li.active .file-duration {
  color: rgba(255,255,255,0.7);
}

/* ========================================
   RECORD ZONE
   ======================================== */

.record-zone {
  text-align: center;
}

.record-visualizer {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.record-visualizer canvas {
  width: 100%;
  height: 120px;
  display: block;
}

.record-timer {
  font-size: 2.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--primary);
  margin-top: 1rem;
  text-shadow: 0 0 20px var(--primary-glow);
}

.record-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.record-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  border-radius: var(--radius-xl);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-glow);
}

.record-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--primary-glow);
}

.record-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.record-btn.stop {
  background: linear-gradient(135deg, var(--accent-danger), #cc2255);
}

.record-btn.recording {
  animation: pulse-record 1.5s ease-in-out infinite;
}

@keyframes pulse-record {
  0%, 100% { box-shadow: 0 0 20px var(--primary-glow); }
  50% { box-shadow: 0 0 40px rgba(255, 85, 0, 0.6); }
}

.record-info {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.record-info i {
  color: var(--accent-info);
  margin-right: 0.25rem;
}

/* ========================================
   PLAYER SECTION
   ======================================== */

.player-section {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  border: 1px solid var(--border-color);
}

/* ========================================
   AUDIO VISUALIZER
   ======================================== */

.audio-visualizer-container {
  background: linear-gradient(180deg, rgba(10, 10, 15, 0.9) 0%, rgba(26, 26, 37, 0.95) 100%);
  border-radius: var(--radius-lg);
  padding: 1rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.audio-visualizer-container::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at center top, rgba(153, 102, 255, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at center bottom, rgba(255, 85, 0, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

#audioVisualizer {
  width: 100%;
  height: 80px;
  display: block;
  border-radius: var(--radius-sm);
}

.waveform-container {
  position: relative;
  margin-bottom: 1rem;
}

.waveform {
  height: 100px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.waveform-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: opacity var(--transition-normal);
}

.waveform-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.player-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.transport-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.transport-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.transport-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.transport-btn.play-btn {
  width: 56px;
  height: 56px;
  font-size: 1.25rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: var(--primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

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

.transport-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.time-display {
  font-size: 1.1rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

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

.volume-control {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.volume-control input[type="range"] {
  width: 100px;
}

/* ========================================
   EFFECTS SECTION
   ======================================== */

.effects-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.effect-panel {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.effect-panel .panel-header {
  padding: 1rem 1.25rem;
  margin-bottom: 0;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.effect-panel .panel-header.collapsible:hover {
  background: var(--bg-tertiary);
}

.effect-panel .panel-header h3 {
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.effect-panel .panel-header h3 i {
  color: var(--primary);
  font-size: 0.9rem;
}

.toggle-icon {
  color: var(--text-muted);
  transition: transform var(--transition-normal);
}

.panel-header.collapsed .toggle-icon {
  transform: rotate(-90deg);
}

.panel-content {
  padding: 0 1.25rem 1.25rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.panel-content.expanded {
  max-height: 2000px;
  padding: 1rem 1.25rem 1.25rem;
}

/* ========================================
   PRESETS
   ======================================== */

.presets-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.preset-category h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.preset-category h4 i {
  color: var(--primary);
}

.preset-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.5rem;
}

.preset-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.preset-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.preset-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.preset-btn.danger:hover {
  background: var(--accent-danger);
  border-color: var(--accent-danger);
}

.preset-btn.reset {
  background: var(--bg-secondary);
  border-color: var(--border-light);
  justify-content: center;
}

.preset-btn.reset:hover {
  background: var(--accent-info);
  border-color: var(--accent-info);
}

.preset-btn i {
  font-size: 1rem;
}

.preset-reset {
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

/* ========================================
   SLIDERS
   ======================================== */

.slider-group {
  margin-bottom: 1rem;
}

.slider-group:last-child {
  margin-bottom: 0;
}

.slider-group label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.slider-value {
  color: var(--primary);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  accent-color: #ff5500;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(255, 85, 0, 0.4);
  transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(255, 85, 0, 0.4);
}

.slider-markers {
  display: flex;
  justify-content: space-between;
  margin-top: 0.25rem;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.help-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

/* ========================================
   EQUALIZER
   ======================================== */

/* ========================================
   EQUALIZER - BAND SELECTOR
   ======================================== */

.eq-band-selector {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.eq-band-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.eq-band-options {
  display: flex;
  gap: 0.5rem;
}

.eq-band-btn {
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 50px;
}

.eq-band-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
}

.eq-band-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: var(--primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

/* ========================================
   EQUALIZER - PRESET CONTROLS
   ======================================== */

.eq-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.eq-preset-btn {
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.eq-preset-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  color: var(--text-primary);
}

.eq-preset-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* ========================================
   EQUALIZER - SLIDERS CONTAINER
   ======================================== */

.eq-container {
  display: flex;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  scrollbar-width: thin;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  position: relative;
  min-height: 200px;
}

.eq-container::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 1.5rem;
  right: 1.5rem;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.eq-container::-webkit-scrollbar {
  height: 8px;
}

.eq-container::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: 4px;
}

.eq-container::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 4px;
}

/* ========================================
   EQUALIZER - INDIVIDUAL SLIDER
   ======================================== */

.eq-slider {
  flex: 1 1 0;
  min-width: 20px;
  max-width: 60px;
  height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

/* Track line behind slider */
.eq-slider::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  background: linear-gradient(180deg, 
    rgba(255, 119, 51, 0.2) 0%, 
    rgba(255, 255, 255, 0.1) 50%, 
    rgba(255, 85, 0, 0.2) 100%);
  border-radius: 2px;
  pointer-events: none;
  z-index: 0;
}

.eq-slider input[type="range"] {
  writing-mode: vertical-lr;
  direction: rtl;
  -webkit-appearance: slider-vertical;
  appearance: slider-vertical;
  width: 28px;
  height: 130px;
  margin: 0;
  background: transparent;
  padding: 0;
  position: relative;
  z-index: 1;
  accent-color: #ff5500;
}

/* Webkit (Chrome, Safari) Track */
.eq-slider input[type="range"]::-webkit-slider-runnable-track {
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, 
    rgba(255, 119, 51, 0.4) 0%, 
    rgba(100, 100, 120, 0.2) 50%, 
    rgba(255, 85, 0, 0.4) 100%);
  border-radius: 2px;
}

/* Webkit (Chrome, Safari) Thumb - Orange glowing dot */
.eq-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: #ff5500 !important;
  background: linear-gradient(135deg, #ff7733, #ff5500) !important;
  border-radius: 50%;
  margin-left: -6px;
  cursor: grab;
  border: none;
  box-shadow: 
    0 0 8px rgba(255, 85, 0, 0.6),
    0 0 20px rgba(255, 85, 0, 0.3),
    inset 0 1px 2px rgba(255, 255, 255, 0.4);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.eq-slider input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 
    0 0 12px rgba(255, 85, 0, 0.8),
    0 0 25px rgba(255, 85, 0, 0.5),
    inset 0 1px 2px rgba(255, 255, 255, 0.5);
}

.eq-slider input[type="range"]:active::-webkit-slider-thumb {
  cursor: grabbing;
  transform: scale(1.2);
}

/* Firefox Track */
.eq-slider input[type="range"]::-moz-range-track {
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, 
    rgba(255, 119, 51, 0.4) 0%, 
    rgba(100, 100, 120, 0.2) 50%, 
    rgba(255, 85, 0, 0.4) 100%);
  border-radius: 2px;
}

/* Firefox Thumb - Orange glowing dot */
.eq-slider input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: #ff5500 !important;
  background: linear-gradient(135deg, #ff7733, #ff5500) !important;
  border-radius: 50%;
  cursor: grab;
  border: none !important;
  box-shadow: 
    0 0 8px rgba(255, 85, 0, 0.6),
    0 0 20px rgba(255, 85, 0, 0.3),
    inset 0 1px 2px rgba(255, 255, 255, 0.4);
}

/* ========================================
   EQUALIZER - FREQUENCY LABEL
   ======================================== */

.eq-slider label {
  font-size: 0.65rem;
  color: var(--text-muted);
  writing-mode: horizontal-tb;
  text-align: center;
  margin-top: 0.5rem;
  white-space: nowrap;
  font-weight: 500;
  letter-spacing: -0.02em;
  transition: color 0.2s ease;
}

.eq-slider:hover label {
  color: var(--text-secondary);
}

/* Value indicator on hover */
.eq-slider .eq-value {
  position: absolute;
  top: -5px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  color: var(--primary);
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.eq-slider:hover .eq-value {
  opacity: 1;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .eq-container {
    gap: 2px;
    padding: 1rem 0.5rem;
  }
  
  .eq-slider {
    min-width: 24px;
    height: 150px;
  }
  
  .eq-slider input[type="range"] {
    height: 100px;
    width: 22px;
  }
  
  .eq-slider label {
    font-size: 0.55rem;
  }
  
  .eq-band-selector {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
}

/* ========================================
   DJ DECK
   ======================================== */

.dj-deck {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: linear-gradient(145deg, var(--bg-tertiary), var(--bg-secondary));
  box-shadow: var(--shadow-md);
}

.dj-deck.disabled {
  opacity: 0.4;
  pointer-events: none;
}

.dj-deck__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.dj-deck__header h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
}

.deck-status {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.25rem 0.75rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

.dj-deck__body {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.dj-disc {
  --dj-rotation: 0deg;
  width: 180px;
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(0, 0, 0, 0.3) 20%, transparent 60%),
    repeating-conic-gradient(
      rgba(0, 0, 0, 0.2) 0deg,
      rgba(0, 0, 0, 0.2) 10deg,
      rgba(255, 255, 255, 0.05) 10deg,
      rgba(255, 255, 255, 0.05) 20deg
    ),
    radial-gradient(circle, #1a1a1a 60%, #0a0a0a 100%);
  border: 4px solid var(--bg-primary);
  position: relative;
  cursor: grab;
  box-shadow: 
    inset 0 0 20px rgba(0, 0, 0, 0.5),
    0 8px 24px rgba(0, 0, 0, 0.4);
  transform: rotate(var(--dj-rotation));
  transition: transform 0.08s linear;
}

.dj-disc.is-dragging {
  cursor: grabbing;
  transition: none !important; /* Instant response when scratching */
  box-shadow: 
    inset 0 0 20px rgba(0, 0, 0, 0.5),
    0 8px 24px rgba(0, 0, 0, 0.4),
    0 0 30px rgba(255, 85, 0, 0.4); /* Orange glow when scratching */
}

.dj-disc.is-dragging .dj-disc__marker {
  box-shadow: 0 0 15px var(--primary), 0 0 30px var(--primary-glow);
}

.dj-disc.is-dragging .dj-disc__label {
  box-shadow: 0 0 20px rgba(255, 85, 0, 0.5);
}

.dj-disc__label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40%;
  height: 40%;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.65rem;
  font-weight: 600;
  color: white;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  pointer-events: none;
}

.dj-disc__spindle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #f0f0f0;
  box-shadow: inset 0 0 3px rgba(0, 0, 0, 0.4);
}

.dj-disc__marker {
  position: absolute;
  top: 12px;
  right: calc(50% - 2px);
  width: 4px;
  height: 24px;
  background: var(--primary);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--primary-glow);
}

.dj-deck__side {
  flex: 1;
  min-width: 200px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.dj-controls {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.dj-btn {
  border: none;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.75rem;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
}

.dj-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  transform: translateY(-1px);
}

.dj-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

.dj-readouts {
  display: flex;
  gap: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
}

.dj-readouts > div {
  flex: 1;
}

.dj-readouts .label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.dj-readouts .value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

/* ========================================
   EXPORT SECTION
   ======================================== */

.export-section {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.export-select {
  padding: 0.75rem 1.25rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
}

.export-select:hover,
.export-select:focus {
  border-color: var(--primary);
}

.export-select option {
  background: var(--bg-secondary);
}

.export-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  border-radius: var(--radius-lg);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-glow);
}

.export-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--primary-glow);
}

.export-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.export-btn.cancel {
  background: linear-gradient(135deg, var(--accent-danger), #cc2255);
}

.export-progress {
  width: 100%;
  max-width: 300px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.progress-bar {
  flex: 1;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  width: 0%;
  transition: width var(--transition-fast);
}

.progress-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  min-width: 40px;
}

/* ========================================
   FOOTER
   ======================================== */

.app-footer {
  text-align: center;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.app-footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.app-footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.app-footer a:hover {
  color: var(--primary-light);
}

.app-footer .fa-heart {
  color: var(--accent-danger);
  animation: heartbeat 1.5s ease infinite;
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.version {
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

/* ========================================
   RESPONSIVE - TABLET
   ======================================== */

@media (max-width: 1024px) {
  .preset-buttons {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  }
  
  .dj-disc {
    width: 150px;
  }
}

/* ========================================
   RESPONSIVE - MOBILE
   ======================================== */

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  
  .app-container {
    padding: 0 0.75rem;
  }

  /* Header */
  .app-header {
    padding: 0.75rem 0;
  }
  
  .header-content {
    gap: 0.75rem;
  }
  
  .logo-icon {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  
  .logo-text h1 {
    font-size: 1.25rem;
  }
  
  .nav-btn {
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
  }
  
  .nav-btn span {
    display: none;
  }
  
  .nav-btn i {
    font-size: 1.1rem;
  }

  /* Upload Zone */
  .upload-zone {
    padding: 2rem 1.5rem;
  }
  
  .upload-icon {
    font-size: 3rem;
  }
  
  .upload-zone h2 {
    font-size: 1.1rem;
  }

  /* Player */
  .player-section {
    padding: 1rem;
  }
  
  .waveform {
    height: 80px;
  }
  
  .player-controls {
    gap: 0.75rem;
  }
  
  .transport-btn {
    width: 40px;
    height: 40px;
  }
  
  .transport-btn.play-btn {
    width: 48px;
    height: 48px;
  }
  
  .time-display {
    font-size: 0.95rem;
    order: 3;
    width: 100%;
    justify-content: center;
  }
  
  .volume-control {
    order: 2;
  }
  
  .volume-control input[type="range"] {
    width: 80px;
  }

  /* Presets */
  .preset-buttons {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .preset-btn {
    padding: 0.6rem 0.75rem;
    font-size: 0.8rem;
  }
  
  .preset-btn span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* Effects */
  .effect-panel .panel-header {
    padding: 0.875rem 1rem;
  }
  
  .panel-content.expanded {
    padding: 0.875rem 1rem 1rem;
  }

  /* DJ Deck */
  .dj-deck {
    padding: 1rem;
  }
  
  .dj-deck__body {
    flex-direction: column;
  }
  
  .dj-disc {
    width: 160px;
  }
  
  .dj-deck__side {
    min-width: 100%;
  }
  
  .dj-controls {
    grid-template-columns: repeat(4, 1fr);
  }

  /* EQ */
  .eq-slider {
    min-width: 24px;
    height: 140px;
  }
  
  .eq-slider input[type="range"] {
    height: 90px;
  }
  
  .eq-slider .freq {
    font-size: 0.5rem;
  }

  /* Record */
  .record-timer {
    font-size: 2rem;
  }
  
  .record-controls {
    flex-direction: column;
  }
  
  .record-btn {
    width: 100%;
    justify-content: center;
  }

  /* Export */
  .export-section {
    flex-direction: column;
    padding: 1rem;
  }
  
  .export-select {
    width: 100%;
  }
  
  .export-btn {
    width: 100%;
    justify-content: center;
  }
  
  .export-progress {
    max-width: 100%;
  }
}

/* ========================================
   RESPONSIVE - SMALL MOBILE
   ======================================== */

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .app-container {
    padding: 0 0.5rem;
  }
  
  .header-content {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .logo {
    width: 100%;
    justify-content: center;
    margin-bottom: 0.5rem;
  }
  
  .header-nav {
    flex: 1;
    justify-content: center;
  }
  
  .header-actions {
    position: absolute;
    right: 0.5rem;
    top: 0.5rem;
  }
  
  .preset-buttons {
    grid-template-columns: 1fr 1fr;
  }
  
  .preset-btn {
    flex-direction: column;
    text-align: center;
    padding: 0.75rem 0.5rem;
    gap: 0.25rem;
  }
  
  .preset-btn i {
    font-size: 1.25rem;
  }
  
  .preset-btn span {
    font-size: 0.7rem;
  }
  
  .dj-disc {
    width: 140px;
  }
  
  .dj-controls {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .eq-controls {
    justify-content: center;
  }
  
  .eq-preset-btn {
    flex: 1;
    text-align: center;
  }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ========================================
   NOTIFICATIONS
   ======================================== */

.notification {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: linear-gradient(135deg, var(--accent-success), #009966);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 500;
  z-index: 10000;
  opacity: 0;
  transition: all 0.3s ease;
}

.notification.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.notification i {
  font-size: 1.25rem;
}

/* ========================================
   ENHANCED DRAG & DROP
   ======================================== */

.upload-zone.drag-over {
  border-color: var(--primary);
  background: rgba(255, 85, 0, 0.1);
  transform: scale(1.01);
}

.upload-zone.drag-over::before {
  opacity: 1;
  animation: pulse-glow 1s ease-in-out infinite;
}

.upload-zone.drag-over .upload-icon {
  animation: bounce 0.5s ease;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  25% { transform: translateY(-15px); }
  75% { transform: translateY(-5px); }
}

/* ========================================
   RECORDING BLINK ANIMATION
   ======================================== */

.blink {
  color: var(--accent-danger);
  animation: blink-animation 1s ease-in-out infinite;
}

@keyframes blink-animation {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.record-btn.recording {
  background: linear-gradient(135deg, var(--accent-danger), #cc2255);
  animation: pulse-record 1.5s ease-in-out infinite;
}

/* ========================================
   FILE ACTIONS
   ======================================== */

.file-actions {
  display: flex;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.files-list li:hover .file-actions {
  opacity: 1;
}

.file-actions .btn-icon {
  width: 28px;
  height: 28px;
  font-size: 0.75rem;
}

.file-actions .load-btn:hover {
  background: var(--accent-success);
  border-color: var(--accent-success);
}

.file-actions .delete-btn:hover {
  background: var(--accent-danger);
  border-color: var(--accent-danger);
}

/* ========================================
   FILES PANEL VISIBILITY
   ======================================== */

.files-panel {
  display: none;
}

.files-panel.has-files {
  display: block;
}

/* ========================================
   RECORDED FILES PANEL
   ======================================== */

#recordedFilesPanel {
  display: none;
  margin-top: 1.5rem;
}

#recordedFilesPanel h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#recordedFilesPanel h3 i {
  color: var(--primary);
}

/* ========================================
   MODE TOGGLE SYSTEM
   ======================================== */

/* Mode Toggle Container */
.mode-toggle {
  display: flex;
  background: var(--bg-tertiary);
  border-radius: var(--radius-xl);
  padding: 4px;
  gap: 4px;
  border: 1px solid var(--border-color);
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  background: transparent;
  border: none;
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.mode-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.mode-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: var(--shadow-glow);
}

.mode-btn i {
  font-size: 0.9rem;
}

/* Simple Mode - Hide Advanced Elements */
.app-container[data-mode="simple"] .advanced-only {
  display: none !important;
}

/* Advanced Mode - Show everything */
.app-container[data-mode="advanced"] .advanced-only {
  display: block;
}

.app-container[data-mode="advanced"] .header-nav.advanced-only {
  display: flex;
}

.app-container[data-mode="advanced"] .dj-deck.advanced-only {
  display: block;
}

/* Mode Transition Animations */
.advanced-only {
  animation: fadeSlideIn 0.3s ease forwards;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Simple Mode Header Adjustment */
.app-container[data-mode="simple"] .header-content {
  justify-content: space-between;
}

/* Simple Mode Info Banner */
.simple-mode-banner {
  background: linear-gradient(135deg, rgba(255, 85, 0, 0.1), rgba(153, 102, 255, 0.1));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem 1.5rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.simple-mode-banner i {
  font-size: 1.5rem;
  color: var(--primary);
}

.simple-mode-banner p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.simple-mode-banner strong {
  color: var(--primary);
}

/* Responsive Mode Toggle */
@media (max-width: 768px) {
  .mode-toggle {
    order: -1;
    width: 100%;
    justify-content: center;
    margin-bottom: 0.5rem;
  }
  
  .mode-btn span {
    display: none;
  }
  
  .mode-btn {
    padding: 0.6rem 1rem;
  }
}