frontend/src/index.css

@tailwind base;
@tailwind components;
@tailwind utilities;

/* Z-Index System - Organized hierarchy */
:root {
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  --z-notification: 800;
  --z-critical: 9999;
}

/* Z-Index utility classes */
.z-base { z-index: var(--z-base); }
.z-dropdown { z-index: var(--z-dropdown); }
.z-sticky { z-index: var(--z-sticky); }
.z-fixed { z-index: var(--z-fixed); }
.z-modal-backdrop { z-index: var(--z-modal-backdrop); }
.z-modal { z-index: var(--z-modal); }
.z-popover { z-index: var(--z-popover); }
.z-tooltip { z-index: var(--z-tooltip); }
.z-notification { z-index: var(--z-notification); }
.z-critical { z-index: var(--z-critical); }

@keyframes solve-indeterminate {
  0% {
    transform: translateX(-100%);
  }

  100% {
    transform: translateX(400%);
  }
}

@keyframes transfer-glow {

  0%,
  100% {
    box-shadow:
      0 0 16px rgba(34, 211, 238, 0.35),
      0 0 36px rgba(16, 185, 129, 0.2),
      inset 0 0 14px rgba(6, 182, 212, 0.12);
  }

  50% {
    box-shadow:
      0 0 28px rgba(34, 211, 238, 0.55),
      0 0 52px rgba(139, 92, 246, 0.18),
      inset 0 0 22px rgba(16, 185, 129, 0.18);
  }
}


/* ─── Global Smoothness ─── */
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
* { -webkit-tap-highlight-color: transparent; }

/* Tabular nums: all digits same width → no layout shift on number changes */
.tabular-nums { font-variant-numeric: tabular-nums; }

/* Skeleton loading pulse */
@keyframes skeleton-pulse {
  0%, 100% { opacity: 0.12; }
  50% { opacity: 0.28; }
}
.skeleton-pulse {
  animation: skeleton-pulse 1.8s ease-in-out infinite;
}

/* Slim themed scrollbar */
.custom-scrollbar::-webkit-scrollbar { width: 5px; }
.custom-scrollbar::-webkit-scrollbar-track { background: transparent; }
.custom-scrollbar::-webkit-scrollbar-thumb { background: rgba(100,116,139,0.25); border-radius: 999px; }
.custom-scrollbar::-webkit-scrollbar-thumb:hover { background: rgba(100,116,139,0.45); }

/* Hide scrollbar utility */
.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

/* Accessibility improvements */
*:focus-visible {
  outline: 2px solid #10b981;
  outline-offset: 2px;
}

button:focus-visible, [role="button"]:focus-visible {
  outline: 2px solid #10b981;
  outline-offset: 2px;
  border-radius: 4px;
}

input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid #10b981;
  outline-offset: 2px;
}

/* Skip to content link for accessibility */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: #10b981;
  color: white;
  padding: 8px;
  z-index: 100;
  transition: top 0.3s;
}

.skip-to-content:focus {
  top: 0;
}

/* Mobile-specific improvements */
@media (max-width: 768px) {
  * {
    -webkit-tap-highlight-color: transparent;
  }

  /* Better touch targets */
  button, [role="button"], input, select, textarea {
    min-height: 44px;
    min-width: 44px;
  }

  /* Small buttons exception */
  .small-touch-target {
    min-height: 32px;
    min-width: 32px;
  }

  /* Better active states for touch */
  button:active, [role="button"]:active {
    transform: scale(0.95);
    opacity: 0.8;
  }

  /* Improve touch feedback */
  .touch-feedback {
    position: relative;
    overflow: hidden;
  }

  .touch-feedback::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
  }

  .touch-feedback:active::after {
    width: 200px;
    height: 200px;
  }

  /* Better scroll momentum */
  * {
    -webkit-overflow-scrolling: touch;
  }

  /* Prevent text selection on touch */
  .no-select {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
  }
}

.fullscreen-pitch:fullscreen {
  background: #0a3a2a;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  overflow-y: auto;
  height: 100vh;
  width: 100vw;
  border-radius: 0 !important;
  border: none !important;
}

.fullscreen-pitch:-webkit-full-screen {
  background: #0a3a2a;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  overflow-y: auto;
  height: 100vh;
  width: 100vw;
  border-radius: 0 !important;
  border: none !important;
}

.touch-none {
  -webkit-user-drag: none;
  user-drag: none;
  -webkit-touch-callout: none;
}