/* Design System & Tokens */
:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #161f30;
  --bg-tertiary: #1f2c42;
  --accent-color: #6366f1; /* Indigo */
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  --accent-glow: rgba(99, 102, 241, 0.15);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.4);
  
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-color);
}

/* Layout */
.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  min-height: 100vh;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
}

.logo-section h1 {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.logo-section p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

/* Ad Placement Placeholder (For AdSense simulation) */
.ad-banner {
  background: rgba(255, 255, 255, 0.01);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 1.5rem;
  text-align: center;
  min-height: 90px;
  margin: 0.5rem 0;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.ad-banner::before {
  content: 'Google AdSense Sponsor Ad';
  position: absolute;
  font-size: 0.7rem;
  top: 5px;
  left: 10px;
  opacity: 0.5;
}

.ad-banner:hover {
  border-color: rgba(99, 102, 241, 0.3);
  background: rgba(99, 102, 241, 0.01);
}

/* Main Content Grid */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2rem;
}

@media (max-width: 1024px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
  .ad-sidebar {
    display: none;
  }
}

/* Tool Workspace */
.workspace {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Glass Card */
.glass-card {
  background: rgba(22, 31, 48, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
}

/* Drag and Drop Zone */
.dropzone {
  border: 2px dashed rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-md);
  padding: 3.5rem 2rem;
  text-align: center;
  cursor: pointer;
  background: rgba(99, 102, 241, 0.02);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.dropzone.dragover {
  border-color: #a855f7;
  background: rgba(168, 85, 247, 0.06);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: scale(0.995);
}

.dropzone-icon {
  width: 64px;
  height: 64px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 16px var(--accent-glow);
  transition: var(--transition-normal);
}

.dropzone:hover .dropzone-icon {
  transform: translateY(-5px) scale(1.05);
}

.dropzone-icon svg {
  width: 28px;
  height: 28px;
  fill: #fff;
}

.dropzone h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

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

.file-input {
  display: none;
}

/* Controls Panel */
.controls-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: center;
}

@media (max-width: 640px) {
  .controls-panel {
    grid-template-columns: 1fr;
  }
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.control-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
}

.control-label span.value {
  color: var(--accent-color);
  font-weight: 700;
}

/* Range Input Styling */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-gradient);
  cursor: pointer;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  transition: var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Select Styling */
.select-wrapper {
  position: relative;
}

select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  transition: var(--transition-fast);
}

select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.select-wrapper::after {
  content: '▼';
  font-size: 0.7rem;
  color: var(--text-secondary);
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

/* Button Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(99, 102, 241, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

/* File Queue / Results Area */
.queue-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.queue-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Image Card Component */
.file-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 1.5rem;
  align-items: center;
  animation: slideIn var(--transition-normal) forwards;
}

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

.file-preview {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  position: relative;
}

.file-preview img {
  max-width: 100%;
  max-height: 100%;
  object-fit: cover;
}

.file-info {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.file-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}

.file-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.badge {
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.75rem;
}

.badge-original {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.badge-saving {
  background: var(--accent-glow);
  color: var(--accent-color);
}

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

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

.btn-icon:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
}

.btn-icon:hover svg {
  fill: var(--error);
}

.btn-icon svg {
  width: 18px;
  height: 18px;
  fill: var(--text-secondary);
  transition: var(--transition-fast);
}

/* Sidebar Ads (Simulating Google AdSense Display Ads) */
.ad-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.ad-skyscraper {
  background: rgba(255, 255, 255, 0.01);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem 1rem;
  min-height: 600px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: var(--text-muted);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.ad-skyscraper::before {
  content: 'Google AdSense Vertical Banner';
  position: absolute;
  font-size: 0.7rem;
  top: 15px;
  left: 0;
  right: 0;
  opacity: 0.5;
  text-transform: uppercase;
}

.ad-skyscraper:hover {
  border-color: rgba(99, 102, 241, 0.3);
  background: rgba(99, 102, 241, 0.01);
}

/* About & FAQ section */
.about-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-top: 2rem;
  border-top: 1px solid var(--border-color);
  padding-top: 3rem;
}

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

.about-item h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.about-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Footer */
footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border-color);
}

/* Global Navigation Styles */
.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

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

.nav-link.active {
  color: var(--text-primary);
  background: var(--accent-glow);
  border-color: rgba(99, 102, 241, 0.25);
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
  }
}

/* Random Picker Styles */
.tabs-header {
  display: flex;
  gap: 1rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
}

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

.tab-btn.active {
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
}

.tab-content {
  display: none;
}

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

.picker-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
}

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

.wheel-container {
  position: relative;
  width: 300px;
  height: 300px;
  margin: 0 auto 1.5rem auto;
}

.wheel-pointer {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 30px;
  background: #ff4757;
  clip-path: polygon(50% 100%, 0 0, 100% 0);
  z-index: 10;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

#wheel-canvas {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.wheel-center-pin {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50px;
  height: 50px;
  background: #fff;
  border-radius: 50%;
  z-index: 5;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--bg-primary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.wheel-center-pin:hover {
  transform: translate(-50%, -50%) scale(1.1);
  background: var(--text-primary);
  box-shadow: 0 6px 15px rgba(99, 102, 241, 0.4);
}

.picker-input-area {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.textarea-custom {
  width: 100%;
  min-height: 160px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 1rem;
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  resize: vertical;
  transition: var(--transition-fast);
}

.textarea-custom:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.winner-display {
  background: var(--accent-glow);
  border: 2px solid var(--accent-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  margin-top: 1.5rem;
  animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes popIn {
  from { transform: scale(0.8); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.winner-name {
  font-size: 2.25rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0.5rem 0;
}

/* Focus Timer Styles */
.timer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
  text-align: center;
}

.timer-circle-wrap {
  position: relative;
  width: 280px;
  height: 280px;
  margin-bottom: 2rem;
}

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

.timer-circle-bg {
  fill: none;
  stroke: var(--bg-tertiary);
  stroke-width: 6;
}

.timer-circle-progress {
  fill: none;
  stroke: url(#timer-gradient);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 816.8; /* 2 * PI * r (r=130) */
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.1s linear;
}

.timer-display {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.timer-time {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -1px;
  font-family: monospace;
}

.timer-state {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-top: 0.25rem;
}

.timer-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

/* Sound Mixer Card */
.mixer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}

.mixer-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition-fast);
}

.mixer-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.mixer-item.active {
  border-color: var(--accent-color);
  background: rgba(99, 102, 241, 0.05);
}

.mixer-icon {
  font-size: 1.5rem;
}

.mixer-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mixer-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}