/*
 * Purple Night Theme
 * ===================
 * A dark luxury purple theme extracted from SofaServer
 * 
 * Usage: Import this file or copy the :root variables into your project
 * Then use semantic classes (.btn-primary, .panel, .card, etc.)
 */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
  /* ----- Core Colors ----- */
  --color-primary: #6128ac;
  --color-primary-light: #8b7cb8;
  --color-primary-hover: #764fac;
  --color-accent: #00a4dc;
  --color-white: #ffffff;
  
  /* ----- Text Colors ----- */
  --color-text: #e0e0e0;
  --color-text-muted: #a0a0a0;
  --color-text-secondary: #8b7cb8;
  
  /* ----- Background Colors ----- */
  --bg-base: #22004e;
  --bg-dark: #000000;
  --bg-deep: #2a0039;
  --bg-panel: rgba(21, 0, 35, 0.98);
  --bg-panel-alt: rgba(10, 0, 21, 0.98);
  --bg-card: linear-gradient(135deg, rgba(97, 40, 172, 0.1) 0%, rgba(53, 0, 91, 0.1) 100%);
  --bg-overlay: rgba(0, 0, 0, 0.7);
  --bg-input: rgba(97, 40, 172, 0.2);
  
  /* ----- Border Colors ----- */
  --border-primary: rgba(97, 40, 172, 0.3);
  --border-primary-hover: rgba(97, 40, 172, 0.6);
  --border-muted: rgba(97, 40, 172, 0.2);
  
  /* ----- Shadow Colors ----- */
  --shadow-primary: rgba(97, 40, 172, 0.4);
  --shadow-dark: rgba(0, 0, 0, 0.4);
  --shadow-modal: rgba(0, 0, 0, 0.5);
  
  /* ----- Semantic Colors ----- */
  --color-danger: #ef4444;
  --color-danger-hover: #dc2626;
  --color-danger-light: #f87171;
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  
  /* ----- Icon Sizes ----- */
  --icon-size-xs: 12px;
  --icon-size-sm: 16px;
  --icon-size-md: 20px;
  --icon-size-lg: 24px;
  --icon-size-xl: 48px;
  --icon-size-xxl: 64px;
  
  /* ----- Spacing Scale ----- */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 20px;
  --space-2xl: 24px;
  --space-3xl: 32px;
  --space-4xl: 48px;
  --space-5xl: 60px;
  
  /* ----- Border Radius ----- */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-3xl: 24px;
  --radius-full: 999px;
  --radius-circle: 50%;
  
  /* ----- Typography ----- */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 28px;
  
  /* ----- Transitions ----- */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
  --transition-modal: 0.4s ease;
  
  /* ----- Z-Index Scale ----- */
  --z-base: 1;
  --z-overlay: 100;
  --z-dock: 1000;
  --z-modal-backdrop: 1998;
  --z-modal: 1999;
  --z-notification: 2000;
  --z-fullscreen: 9999;
}

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

html {
  height: 100%;
  background: linear-gradient(137deg, var(--bg-base) 0%, var(--bg-dark) 50%, var(--bg-deep) 100%);
  background-size: 400% 400%;
  background-attachment: fixed;
  animation: gradient 30s ease infinite;
}

body {
  font-family: var(--font-family);
  background: transparent;
  min-height: 100vh;
  color: var(--color-white);
  line-height: 1.5;
}

@keyframes gradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ============================================
   Icon System (SVG Mask-based)
   ============================================ */
.svg-icon {
  display: inline-block;
  background-color: var(--icon-color, var(--color-primary));
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
}

/* Icon color variants */
.svg-icon.icon-primary { --icon-color: var(--color-primary); }
.svg-icon.icon-primary-light { --icon-color: var(--color-primary-light); }
.svg-icon.icon-accent { --icon-color: var(--color-accent); }
.svg-icon.icon-white { --icon-color: var(--color-white); }
.svg-icon.icon-danger { --icon-color: var(--color-danger); }

/* Icon size variants */
.svg-icon.icon-xs { width: var(--icon-size-xs); height: var(--icon-size-xs); }
.svg-icon.icon-sm { width: var(--icon-size-sm); height: var(--icon-size-sm); }
.svg-icon.icon-md { width: var(--icon-size-md); height: var(--icon-size-md); }
.svg-icon.icon-lg { width: var(--icon-size-lg); height: var(--icon-size-lg); }
.svg-icon.icon-xl { width: var(--icon-size-xl); height: var(--icon-size-xl); }
.svg-icon.icon-xxl { width: var(--icon-size-xxl); height: var(--icon-size-xxl); }

/* ============================================
   Button Styles
   ============================================ */

/* Primary Button */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, #5729a7 100%);
  color: var(--color-white);
  border: none;
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  transition: all var(--transition-base);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-hover) 0%, var(--color-primary) 100%);
  transform: translateY(-2px);
  box-shadow: 0 var(--space-sm) var(--space-xl) var(--shadow-primary);
}

/* Secondary Button */
.btn-secondary {
  background: var(--bg-input);
  color: var(--color-white);
  border: 1px solid var(--border-primary);
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  transition: all var(--transition-base);
}
.btn-secondary:hover {
  background: rgba(97, 40, 172, 0.3);
  border-color: var(--border-primary-hover);
}

/* Danger Button */
.btn-danger {
  background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-danger-hover) 100%);
  color: var(--color-white);
  border: none;
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  transition: all var(--transition-base);
}
.btn-danger:hover {
  background: linear-gradient(135deg, var(--color-danger-light) 0%, var(--color-danger) 100%);
  transform: translateY(-2px);
  box-shadow: 0 var(--space-sm) var(--space-xl) rgba(239, 68, 68, 0.4);
}

/* Pill Button */
.btn-pill {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--bg-input);
  color: var(--color-white);
  border: 1px solid var(--border-primary);
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  transition: all var(--transition-base);
}
.btn-pill:hover {
  background: rgba(97, 40, 172, 0.4);
  border-color: var(--border-primary-hover);
  transform: scale(1.05);
}

/* Icon Button */
.btn-icon {
  background: transparent;
  color: var(--color-primary-light);
  border: none;
  border-radius: var(--radius-circle);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
}
.btn-icon:hover {
  background: var(--bg-input);
  color: var(--color-white);
  transform: scale(1.1);
}
.btn-icon:active {
  transform: scale(0.95);
}

/* ============================================
   Card Styles
   ============================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow-primary);
  border-color: var(--border-primary-hover);
}

.card-body {
  padding: var(--space-md);
}

.card-title {
  font-size: var(--font-size-base);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ============================================
   Panel & Modal Styles
   ============================================ */
.panel {
  background: linear-gradient(135deg, var(--bg-panel) 0%, var(--bg-panel-alt) 100%);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-2xl);
  box-shadow: 0 var(--space-xl) 60px var(--shadow-dark);
}

.panel-content {
  padding: var(--space-2xl);
}

/* Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-overlay);
  z-index: var(--z-modal-backdrop);
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: linear-gradient(135deg, var(--bg-panel) 0%, var(--bg-panel-alt) 100%);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-2xl);
  box-shadow: 0 var(--space-xl) 40px var(--shadow-modal);
  color: var(--color-white);
  max-width: 90%;
  width: 400px;
  z-index: var(--z-modal);
}

.modal-header {
  padding: var(--space-2xl);
  border-bottom: 1px solid var(--border-muted);
}

.modal-body {
  padding: var(--space-2xl);
}

.modal-footer {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  padding: var(--space-lg) var(--space-2xl) var(--space-2xl);
}

/* Close button */
.btn-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  background: transparent;
  border: none;
  color: var(--color-white);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: var(--radius-circle);
  transition: all var(--transition-base);
}
.btn-close:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ============================================
   Form Controls
   ============================================ */

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}
.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #361569;
  transition: var(--transition-modal);
  border-radius: var(--radius-3xl);
}
.toggle-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: var(--color-primary-light);
  transition: var(--transition-modal);
  border-radius: var(--radius-circle);
}
.toggle-switch input:checked + .toggle-slider {
  background-color: var(--color-primary);
}
.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(20px);
}

/* Range Slider */
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--border-primary);
  border-radius: 3px;
  outline: none;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--color-primary-light);
  border-radius: var(--radius-circle);
  cursor: pointer;
  transition: all var(--transition-base);
}
.slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}
.slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--color-primary-light);
  border-radius: var(--radius-circle);
  cursor: pointer;
  border: none;
}

/* Input Field */
.input {
  background: transparent;
  border: none;
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  outline: none;
  padding: var(--space-xs) 0;
}
.input::placeholder {
  color: rgba(139, 124, 184, 0.5);
}

/* Search Bar */
.search-bar {
  position: relative;
  width: 44px;
  height: 44px;
  background: var(--bg-input);
  border: 1px solid var(--border-primary);
  border-radius: 22px;
  display: flex;
  align-items: center;
  padding: 0 var(--space-md);
  transition: all var(--transition-slow);
  overflow: hidden;
}
.search-bar:focus-within {
  width: 260px;
  background: var(--bg-panel);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(97, 40, 172, 0.15);
}

/* ============================================
   Dock / Bottom Bar
   ============================================ */
.dock {
  position: fixed;
  bottom: calc(var(--space-lg) + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-sm) var(--space-lg);
  background: linear-gradient(135deg, var(--bg-panel) 0%, var(--bg-panel-alt) 100%);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-3xl);
  box-shadow: 0 var(--space-sm) 32px var(--shadow-dark);
  z-index: var(--z-dock);
}

.dock-btn {
  background: transparent;
  color: var(--color-primary-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-circle);
  border: none;
}
.dock-btn:hover {
  background: var(--bg-input);
  color: var(--color-white);
  transform: scale(1.1);
}

/* ============================================
   Progress Bar
   ============================================ */
.progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--border-primary);
}
.progress-bar {
  height: 100%;
  background: var(--color-primary);
}

/* ============================================
   Badge
   ============================================ */
.badge {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  background: rgba(97, 40, 172, 0.9);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  z-index: 5;
}

/* Duration Badge */
.badge-duration {
  position: absolute;
  bottom: var(--space-sm);
  right: var(--space-sm);
  background: rgba(0, 0, 0, 0.8);
  padding: 2px var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
  text-align: center;
  padding: var(--space-5xl) var(--space-xl);
}
.empty-state h2 {
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}
.empty-state p {
  color: var(--color-primary-light);
  margin-bottom: var(--space-xl);
}

/* ============================================
   iOS Safe Area Support
   ============================================ */
@supports (padding: max(0px)) {
  .app {
    min-height: calc(100vh - 120px);
    padding-top: env(safe-area-inset-top, 0px);
    padding-left: max(0px, env(safe-area-inset-left));
    padding-right: max(0px, env(safe-area-inset-right));
    padding-bottom: calc(120px + env(safe-area-inset-bottom, 0px));
  }
}

/* Prevent zoom on input focus for iOS */
input, textarea, select {
  font-size: var(--font-size-md);
}

/* ============================================
   Utility Classes
   ============================================ */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }