@import "tailwindcss";

@layer base {
  /* Page transitions */
  body {
    --transition-duration: 200ms;
  }
  
  body main {
    opacity: 1;
    transform: translateY(0);
    transition: 
      opacity var(--transition-duration) ease-out,
      transform var(--transition-duration) ease-out;
  }
  
  body.page-is-transitioning main {
    opacity: 0;
    transform: translateY(8px);
  }
  :root {
    font-family:
      "Outfit",
      ui-sans-serif,
      system-ui,
      -apple-system,
      "Segoe UI",
      Roboto,
      "Helvetica Neue",
      Arial,
      "Noto Sans",
      "Apple Color Emoji",
      "Segoe UI Emoji",
      "Segoe UI Symbol",
      sans-serif;
  }

  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    font-weight: 500;
  }
  
  .os-scrollbar-handle {
    background: rgb(250 204 21 / 0.25) !important;
  }
  
  .os-scrollbar-handle:hover {
    background: rgb(250 204 21 / 0.4) !important;
  }
  
  .os-scrollbar-track {
    background: transparent !important;
  }
}

@keyframes glimmer {
  0% {
    background-position: -200% center;
  }
  100% {
    background-position: 200% center;
  }
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Loading spinner - CSS animation runs on compositor thread,
   continues even during main thread blocking */
.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgb(250 204 21 / 0.3);
  border-top-color: rgb(250 204 21);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Error indicator - X mark with shake animation */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

.error-indicator {
  width: 48px;
  height: 48px;
  position: relative;
  animation: shake 0.5s ease-out;
}

.error-indicator::before,
.error-indicator::after {
  content: '';
  position: absolute;
  width: 4px;
  height: 32px;
  background: rgb(239 68 68);
  border-radius: 2px;
  top: 50%;
  left: 50%;
}

.error-indicator::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.error-indicator::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}



@layer utilities {
  .page-container {
    @apply mx-auto max-w-3xl py-8 px-4;
  }

  .card {
    @apply border border-yellow-400/20 rounded-md bg-transparent p-6 shadow-[0_4px_20px_rgba(250,204,21,0.08)];
  }

  .title-hover {
    transition: transform 0.2s ease-out, filter 0.2s ease-out;
  }

  .title-hover:hover {
    transform: scale(1.03);
    filter: brightness(1.15);
  }

  .title-base {
    position: relative;
  }

  .title-base::before {
    content: attr(data-text);
    position: absolute;
    inset: 0;
    background: linear-gradient(
      90deg,
      rgb(156 163 175) 0%,
      rgb(156 163 175) 35%,
      rgb(250 204 21) 45%,
      rgb(250 204 21) 55%,
      rgb(156 163 175) 65%,
      rgb(156 163 175) 100%
    );
    background-size: 200% 100%;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: glimmer 3s ease-in-out infinite;
    opacity: 0;
    transition: opacity 0.2s ease-out;
  }

  .title-base.title-glimmer::before {
    opacity: 1;
  }
}