/**
 * Taiga Platform — Liquid Glass Design System
 * Derived from Apple Design Resources & /Users/laarkin/Downloads/DESIGN KIT
 *
 * Design Tokens:
 * - Accent Blue: #0088FF (iOS System Blue)
 * - Destructive Red: #FF383C (iOS System Red)
 * - Success Green: #2CA462 (iOS System Green)
 * - Warning Orange: #FD7113 (iOS System Orange)
 * - Warning Yellow: #F9DF1B (iOS System Yellow)
 * - Dark Surface: #1A1A1A
 * - Blur & Saturation: blur(20px) saturate(180%)
 * - Radii: Cards 16px, Buttons 12px, Pills/Capsules 20px
 */

:root {
  /* Apple HIG Color Palette */
  --accent-blue: #0088FF;
  --accent-blue-hover: #0077E6;
  --destructive-red: #FF383C;
  --destructive-red-hover: #E03135;
  --success-green: #2CA462;
  --success-green-hover: #269156;
  --warning-orange: #FD7113;
  --warning-yellow: #F9DF1B;
  --dark-surface: #1A1A1A;
  --surface-light: #FFFFFF;
  --bg-dark: #0D0D11;

  /* Liquid Glass Surfaces */
  --glass-bg-dark: rgba(28, 28, 30, 0.72);
  --glass-bg-light: rgba(255, 255, 255, 0.72);
  --glass-border-dark: rgba(255, 255, 255, 0.12);
  --glass-border-light: rgba(0, 0, 0, 0.08);
  --glass-blur: 20px;
  --glass-saturate: 180%;
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --glass-drop-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* Geometry & Radii Tokens */
  --container-radius: 16px;
  --button-radius: 12px;
  --capsule-radius: 20px;
  --sidebar-width: 260px;
  --mobile-tabbar-height: 83px;
  --mobile-tabbar-landscape: 49px;
  --content-max-width: 1440px;

  /* Typography Colors */
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-muted: rgba(255, 255, 255, 0.45);
}

/* -------------------------------------------------------------------------- */
/* Base Liquid Glass Materials                                               */
/* -------------------------------------------------------------------------- */

.glass-card {
  background: var(--glass-bg-dark);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border: 1px solid var(--glass-border-dark);
  border-radius: var(--container-radius);
  box-shadow: var(--glass-shadow);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 12px 40px 0 rgba(0, 136, 255, 0.2);
}

.glass-card-interactive {
  cursor: pointer;
}

.glass-card-interactive:active {
  transform: scale(0.99);
}

/* Buttons */
.btn-primary {
  background: var(--accent-blue);
  color: #FFFFFF;
  border: none;
  border-radius: var(--button-radius);
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 14px 0 rgba(0, 136, 255, 0.4);
  text-decoration: none;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-blue-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px 0 rgba(0, 136, 255, 0.6);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--button-radius);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  text-decoration: none;
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-destructive {
  background: var(--destructive-red);
  color: #FFFFFF;
  border-radius: var(--button-radius);
  border: none;
  padding: 10px 20px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn-destructive:hover:not(:disabled) {
  background: var(--destructive-red-hover);
}

/* Capsules & Badges */
.badge-capsule {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--capsule-radius);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
  background: rgba(0, 136, 255, 0.15);
  color: var(--accent-blue);
  border: 1px solid rgba(0, 136, 255, 0.3);
}

.badge-capsule.success {
  background: rgba(44, 164, 98, 0.15);
  color: var(--success-green);
  border-color: rgba(44, 164, 98, 0.3);
}

.badge-capsule.warning {
  background: rgba(253, 113, 19, 0.15);
  color: var(--warning-orange);
  border-color: rgba(253, 113, 19, 0.3);
}

.badge-capsule.error {
  background: rgba(255, 56, 60, 0.15);
  color: var(--destructive-red);
  border-color: rgba(255, 56, 60, 0.3);
}

.badge-capsule.pro {
  background: linear-gradient(135deg, rgba(255, 179, 64, 0.2), rgba(253, 113, 19, 0.2));
  color: #FFB340;
  border: 1px solid rgba(255, 179, 64, 0.4);
}

/* Progress Indicators */
.progress-container {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
  margin: 16px 0;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-blue), var(--success-green));
  width: 0%;
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
  max-width: 380px;
  pointer-events: none;
}

.toast {
  padding: 14px 20px;
  border-radius: var(--button-radius);
  color: #FFFFFF;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
}

.toast.success {
  background: rgba(44, 164, 98, 0.92);
  border: 1px solid rgba(44, 164, 98, 0.4);
}

.toast.error {
  background: rgba(255, 56, 60, 0.92);
  border: 1px solid rgba(255, 56, 60, 0.4);
}

.toast.info {
  background: rgba(0, 136, 255, 0.92);
  border: 1px solid rgba(0, 136, 255, 0.4);
}

.toast.warning {
  background: rgba(253, 113, 19, 0.92);
  border: 1px solid rgba(253, 113, 19, 0.4);
  color: #FFFFFF;
}

@keyframes toastSlideIn {
  from { transform: translateX(110%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Modal Overlays & Dialogs */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.68);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal-content {
  background: var(--dark-surface);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--container-radius);
  width: 100%;
  max-width: 520px;
  padding: 32px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7);
  animation: modalScaleUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modalScaleUp {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* Offline Banner */
.offline-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--destructive-red);
  color: #FFFFFF;
  text-align: center;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* -------------------------------------------------------------------------- */
/* Accessibility & System Modes                                               */
/* -------------------------------------------------------------------------- */

/* System Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --dark-surface: #1A1A1A;
    background-color: #0D0D11;
  }
}

/* High Contrast Accessibility Mode */
@media (prefers-contrast: more) {
  :root {
    --glass-border-dark: #FFFFFF;
    --text-secondary: #FFFFFF;
    --glass-blur: 0px;
  }
  .glass-card,
  .desktop-sidebar,
  .mobile-tab-bar,
  .modal-content,
  .toast {
    background: #1A1A1A !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: 2px solid #FFFFFF !important;
  }
  .btn-primary {
    border: 2px solid #FFFFFF !important;
  }
}

/* Reduced Motion Mode */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    transition: none !important;
    animation: none !important;
  }
}