/**
 * GLASSMORPHISM DESIGN SYSTEM
 * Frosted glass aesthetic matching JetsOS landing page
 * Dark theme with accessibility considerations
 *
 * CSS Custom Properties for flexible styling
 * Reusable component classes
 * Multiple intensity levels for visual hierarchy
 * WCAG AA contrast compliance
 * Reduced motion support
 */

:root {
  /* ===== GLASS EFFECT PROPERTIES ===== */
  /* Backdrop blur values */
  --glass-blur-subtle: 8px;
  --glass-blur-medium: 10px;
  --glass-blur-strong: 20px;
  --glass-blur-ultra: 30px;

  /* Background opacity levels */
  --glass-bg-opacity-light: 0.05;
  --glass-bg-opacity-subtle: 0.08;
  --glass-bg-opacity-medium: 0.12;
  --glass-bg-opacity-strong: 0.15;

  /* Border opacity levels */
  --glass-border-opacity-light: 0.08;
  --glass-border-opacity-subtle: 0.12;
  --glass-border-opacity-medium: 0.15;
  --glass-border-opacity-strong: 0.25;

  /* Shadow depths */
  --glass-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --glass-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --glass-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
  --glass-shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.2);

  /* Shadow with accent color */
  --glass-shadow-accent-blue: 0 8px 32px rgba(59, 130, 246, 0.15);
  --glass-shadow-accent-blue-hover: 0 12px 40px rgba(59, 130, 246, 0.25);

  /* ===== COLOR PALETTE ===== */
  /* Base colors */
  --color-bg-dark: #0F0F15;
  --color-bg-darker: #0A0A0F;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #E5E7EB;
  --color-text-tertiary: #9CA3AF;

  /* Glass colors */
  --color-glass-white: rgba(255, 255, 255, 1);
  --color-glass-white-transparent: rgba(255, 255, 255, var(--glass-bg-opacity-medium));

  /* Accent colors */
  --color-accent-blue-light: #93c5fd;
  --color-accent-blue: #3b82f6;
  --color-accent-blue-dark: #1d4ed8;
  --color-accent-blue-darkest: #1e3a8a;

  /* Status colors */
  --color-status-success: #86efac;
  --color-status-success-bg: rgba(134, 239, 172, 0.15);
  --color-status-success-border: rgba(134, 239, 172, 0.3);

  --color-status-warning: #fcd34d;
  --color-status-warning-bg: rgba(252, 211, 77, 0.15);
  --color-status-warning-border: rgba(252, 211, 77, 0.3);

  --color-status-error: #fca5a5;
  --color-status-error-bg: rgba(252, 165, 165, 0.15);
  --color-status-error-border: rgba(252, 165, 165, 0.3);

  --color-status-info: #93c5fd;
  --color-status-info-bg: rgba(147, 197, 253, 0.15);
  --color-status-info-border: rgba(147, 197, 253, 0.3);

  /* ===== TRANSITIONS ===== */
  --transition-fast: 0.15s ease-out;
  --transition-base: 0.2s ease-out;
  --transition-smooth: 0.3s ease-out;
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0s;
    --transition-base: 0s;
    --transition-smooth: 0s;
  }

  * {
    animation-duration: 0s !important;
    transition-duration: 0s !important;
  }
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--color-bg-dark);
  color: var(--color-text-primary);
}

/* ===== GLASS CARD COMPONENTS ===== */

/* Base glass card - medium intensity */
.glass-card {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-medium));
  -webkit-backdrop-filter: blur(var(--glass-blur-medium)) saturate(1.2);
  backdrop-filter: blur(var(--glass-blur-medium)) saturate(1.2);
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-medium));
  border-radius: 12px;
  box-shadow: var(--glass-shadow-md);
  transition: all var(--transition-base);
  overflow: hidden;
}

.glass-card:hover {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-strong));
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: var(--glass-shadow-accent-blue-hover);
  transform: translateY(-2px);
}

/* Subtle glass card - low intensity for backgrounds */
.glass-card-subtle {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-subtle));
  -webkit-backdrop-filter: blur(var(--glass-blur-subtle));
  backdrop-filter: blur(var(--glass-blur-subtle));
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-light));
  border-radius: 12px;
  box-shadow: var(--glass-shadow-sm);
  transition: all var(--transition-base);
}

.glass-card-subtle:hover {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-medium));
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: var(--glass-shadow-md);
}

/* Strong glass card - high intensity for emphasis */
.glass-card-strong {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-strong));
  -webkit-backdrop-filter: blur(var(--glass-blur-strong));
  backdrop-filter: blur(var(--glass-blur-strong));
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 12px;
  box-shadow: var(--glass-shadow-lg);
  transition: all var(--transition-base);
}

.glass-card-strong:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: var(--glass-shadow-accent-blue-hover);
  transform: translateY(-2px);
}

/* Ultra glass card - maximum intensity for primary focus */
.glass-card-ultra {
  background: rgba(255, 255, 255, 0.2);
  -webkit-backdrop-filter: blur(var(--glass-blur-ultra));
  backdrop-filter: blur(var(--glass-blur-ultra));
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-strong));
  border-radius: 12px;
  box-shadow: var(--glass-shadow-xl);
  transition: all var(--transition-smooth);
}

.glass-card-ultra:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 16px 48px rgba(59, 130, 246, 0.3);
  transform: translateY(-4px);
}

/* Glass panel - for large container sections */
.glass-panel {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-medium));
  -webkit-backdrop-filter: blur(var(--glass-blur-medium));
  backdrop-filter: blur(var(--glass-blur-medium));
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-medium));
  border-radius: 16px;
  box-shadow: var(--glass-shadow-lg);
  padding: 24px;
  transition: all var(--transition-base);
}

/* Glass tile - for grid items */
.glass-tile {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-medium));
  -webkit-backdrop-filter: blur(var(--glass-blur-medium));
  backdrop-filter: blur(var(--glass-blur-medium));
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-medium));
  border-radius: 12px;
  box-shadow: var(--glass-shadow-md);
  transition: all var(--transition-base);
}

.glass-tile:hover {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-strong));
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: var(--glass-shadow-lg);
  transform: translateY(-2px);
}

/* ===== GLASS HEADER/NAVIGATION COMPONENTS ===== */

/* Glass header - for top bars */
.glass-header {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-light));
  -webkit-backdrop-filter: blur(var(--glass-blur-medium));
  backdrop-filter: blur(var(--glass-blur-medium));
  border-bottom: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-subtle));
  box-shadow: var(--glass-shadow-sm);
  transition: all var(--transition-base);
  z-index: 40;
}

.glass-header.sticky {
  position: sticky;
  top: 0;
  z-index: 50;
}

/* Glass sidebar - for side navigation */
.glass-sidebar {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-subtle));
  -webkit-backdrop-filter: blur(var(--glass-blur-medium));
  backdrop-filter: blur(var(--glass-blur-medium));
  border-right: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-subtle));
  box-shadow: var(--glass-shadow-sm);
  transition: all var(--transition-base);
}

/* ===== GLASS BUTTONS ===== */

/* Primary button - glass with gradient */
.glass-button-primary {
  background: linear-gradient(135deg, var(--color-accent-blue), #2563eb);
  color: var(--color-text-primary);
  border: none;
  border-radius: 8px;
  padding: 10px 20px;
  font-weight: 500;
  font-size: 14px;
  box-shadow: var(--glass-shadow-accent-blue);
  transition: all var(--transition-base);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.glass-button-primary:hover {
  background: linear-gradient(135deg, #2563eb, var(--color-accent-blue-dark));
  box-shadow: var(--glass-shadow-accent-blue-hover);
  transform: translateY(-2px);
}

.glass-button-primary:active {
  transform: translateY(0);
  box-shadow: var(--glass-shadow-accent-blue);
}

.glass-button-primary:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 2px;
}

/* Secondary button - frosted glass */
.glass-button-secondary {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-medium));
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--color-text-primary);
  border-radius: 8px;
  padding: 10px 20px;
  font-weight: 500;
  font-size: 14px;
  -webkit-backdrop-filter: blur(var(--glass-blur-medium));
  backdrop-filter: blur(var(--glass-blur-medium));
  box-shadow: var(--glass-shadow-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.glass-button-secondary:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue-light);
  box-shadow: var(--glass-shadow-md);
  transform: translateY(-2px);
}

.glass-button-secondary:active {
  transform: translateY(0);
}

.glass-button-secondary:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 2px;
}

/* Ghost button - minimal glass */
.glass-button-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-light));
  color: var(--color-text-tertiary);
  border-radius: 8px;
  padding: 10px 20px;
  font-weight: 500;
  font-size: 14px;
  transition: all var(--transition-base);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.glass-button-ghost:hover {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-subtle));
  border-color: rgba(255, 255, 255, var(--glass-border-opacity-medium));
  color: var(--color-text-secondary);
  box-shadow: var(--glass-shadow-sm);
}

.glass-button-ghost:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 2px;
}

/* ===== GLASS FORM INPUTS ===== */

.glass-input,
.glass-select,
.glass-textarea {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-medium));
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-medium));
  color: var(--color-text-primary);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  -webkit-backdrop-filter: blur(var(--glass-blur-subtle));
  backdrop-filter: blur(var(--glass-blur-subtle));
  transition: all var(--transition-base);
}

.glass-input::placeholder,
.glass-textarea::placeholder {
  color: var(--color-text-tertiary);
}

.glass-input:focus,
.glass-select:focus,
.glass-textarea:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  background: rgba(255, 255, 255, var(--glass-bg-opacity-strong));
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.glass-textarea {
  resize: vertical;
  min-height: 100px;
}

/* ===== GLASS DROPDOWN/SELECT ===== */

.glass-dropdown {
  position: relative;
  display: inline-block;
}

.glass-dropdown-trigger {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-medium));
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-medium));
  color: var(--color-text-primary);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  -webkit-backdrop-filter: blur(var(--glass-blur-subtle));
  backdrop-filter: blur(var(--glass-blur-subtle));
  transition: all var(--transition-base);
}

.glass-dropdown-trigger:hover {
  background: rgba(255, 255, 255, var(--glass-bg-opacity-strong));
  border-color: rgba(59, 130, 246, 0.3);
}

.glass-dropdown-trigger:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 2px;
}

.glass-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 8px;
  background: rgba(15, 15, 21, 0.95);
  -webkit-backdrop-filter: blur(var(--glass-blur-strong));
  backdrop-filter: blur(var(--glass-blur-strong));
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-medium));
  border-radius: 12px;
  box-shadow: var(--glass-shadow-lg);
  z-index: 1000;
  min-width: 200px;
  overflow: hidden;
}

.glass-dropdown-menu-item {
  padding: 12px 16px;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.glass-dropdown-menu-item:last-child {
  border-bottom: none;
}

.glass-dropdown-menu-item:hover {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-accent-blue-light);
  padding-left: 20px;
}

.glass-dropdown-menu-item.active {
  background: rgba(59, 130, 246, 0.2);
  color: var(--color-accent-blue-light);
  font-weight: 500;
}

/* ===== GLASS MODAL/DIALOG ===== */

.glass-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn var(--transition-smooth);
}

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

.glass-modal {
  background: rgba(15, 15, 21, 0.98);
  -webkit-backdrop-filter: blur(var(--glass-blur-strong));
  backdrop-filter: blur(var(--glass-blur-strong));
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-medium));
  border-radius: 16px;
  box-shadow: var(--glass-shadow-xl);
  max-width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp var(--transition-smooth);
  z-index: 1001;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.glass-modal-header {
  padding: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-subtle));
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.glass-modal-body {
  padding: 24px;
}

.glass-modal-footer {
  padding: 24px;
  border-top: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-subtle));
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* ===== GLASS BADGES/TAGS ===== */

.glass-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(255, 255, 255, var(--glass-bg-opacity-medium));
  border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity-subtle));
  color: var(--color-text-secondary);
  -webkit-backdrop-filter: blur(var(--glass-blur-subtle));
  backdrop-filter: blur(var(--glass-blur-subtle));
  transition: all var(--transition-fast);
}

.glass-badge-success {
  background: var(--color-status-success-bg);
  border-color: var(--color-status-success-border);
  color: var(--color-status-success);
}

.glass-badge-warning {
  background: var(--color-status-warning-bg);
  border-color: var(--color-status-warning-border);
  color: var(--color-status-warning);
}

.glass-badge-error {
  background: var(--color-status-error-bg);
  border-color: var(--color-status-error-border);
  color: var(--color-status-error);
}

.glass-badge-info {
  background: var(--color-status-info-bg);
  border-color: var(--color-status-info-border);
  color: var(--color-status-info);
}

/* ===== GLASS DIVIDER ===== */

.glass-divider {
  height: 1px;
  background: rgba(255, 255, 255, var(--glass-border-opacity-subtle));
  margin: 16px 0;
}

.glass-divider-vertical {
  width: 1px;
  height: 100%;
  background: rgba(255, 255, 255, var(--glass-border-opacity-subtle));
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */

@media (max-width: 768px) {
  .glass-panel {
    padding: 16px;
  }

  .glass-modal {
    max-width: 95%;
    max-height: 95vh;
  }

  .glass-button-primary,
  .glass-button-secondary,
  .glass-button-ghost {
    padding: 8px 16px;
    font-size: 13px;
  }

  .glass-input,
  .glass-select,
  .glass-textarea {
    padding: 8px 10px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .glass-card {
    border-radius: 8px;
  }

  .glass-panel {
    border-radius: 8px;
    padding: 12px;
  }

  .glass-modal {
    max-width: 100%;
    max-height: 100%;
    border-radius: 16px 16px 0 0;
  }
}

/* ===== ACCESSIBILITY UTILITIES ===== */

/* High contrast mode support */
@media (prefers-contrast: more) {
  .glass-card {
    border-width: 2px;
  }

  .glass-button-primary,
  .glass-button-secondary,
  .glass-button-ghost {
    border-width: 2px;
  }

  .glass-input:focus {
    outline-width: 3px;
  }
}

/* Ensure sufficient color contrast on glass surfaces */
.glass-card strong,
.glass-panel strong,
.glass-tile strong {
  font-weight: 700;
}

/* Focus visible for keyboard navigation */
.glass-button-primary:focus-visible,
.glass-button-secondary:focus-visible,
.glass-button-ghost:focus-visible,
.glass-input:focus-visible,
.glass-select:focus-visible,
.glass-dropdown-trigger:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 2px;
}

/* Skip link (accessibility) */
.glass-skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: linear-gradient(135deg, var(--color-accent-blue), #2563eb);
  color: white;
  padding: 8px 12px;
  text-decoration: none;
  border-radius: 0 0 4px 0;
  z-index: 10000;
}

.glass-skip-link:focus {
  top: 0;
}

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

/* Glass text colors with contrast preservation */
.glass-text-primary {
  color: var(--color-text-primary);
}

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

.glass-text-tertiary {
  color: var(--color-text-tertiary);
}

.glass-text-accent {
  color: var(--color-accent-blue-light);
}

/* Opacity utilities */
.glass-opacity-subtle {
  opacity: 0.6;
}

.glass-opacity-medium {
  opacity: 0.8;
}

/* Spacing utilities specific to glass components */
.glass-gap-sm {
  gap: 8px;
}

.glass-gap-md {
  gap: 12px;
}

.glass-gap-lg {
  gap: 16px;
}

.glass-gap-xl {
  gap: 24px;
}

/* Glow effect for emphasis */
.glass-glow-subtle {
  box-shadow: 0 0 16px rgba(59, 130, 246, 0.1);
}

.glass-glow-medium {
  box-shadow: 0 0 24px rgba(59, 130, 246, 0.2);
}

.glass-glow-strong {
  box-shadow: 0 0 32px rgba(59, 130, 246, 0.3);
}

/* Smooth transitions for glass elements */
.glass-transition {
  transition: all var(--transition-smooth);
}

.glass-transition-fast {
  transition: all var(--transition-fast);
}