/* Shared Tailwind Complement Styles for MHDBDB Site
 * Used by: index.html, korpus.html, playground/index.html
 * Based on playground design system
 */

:root {
  color-scheme: light;

  /* Design System Variables */

  /* Spacing scale (4px base) */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */

  /* Typography scale */
  --text-xs: 0.75rem;   /* 12px */
  --text-sm: 0.875rem;  /* 14px */
  --text-base: 1rem;    /* 16px */
  --text-lg: 1.125rem;  /* 18px */
  --text-xl: 1.25rem;   /* 20px */
  --text-2xl: 1.5rem;   /* 24px */
  --text-3xl: 1.875rem; /* 30px */
  --text-4xl: 2.25rem;  /* 36px */

  /* Border radius scale */
  --radius-sm: 0.5rem;   /* 8px */
  --radius-md: 0.75rem;  /* 12px */
  --radius-lg: 1rem;     /* 16px */
  --radius-xl: 1.5rem;   /* 24px */
  --radius-2xl: 2rem;    /* 32px */
  --radius-3xl: 3rem;    /* 48px */

  /* Transition timing */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Light mode colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #1f2937;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --border-primary: #e2e8f0;
  --border-secondary: #cbd5e1;
  --accent-primary: #3b75d8;
  --accent-secondary: #60a5fa;
}

body {
  font-feature-settings: "liga" 1, "kern" 1;
}

/* Respect user motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Improve focus styles for accessibility */
*:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* ========================================
   LOADING & PROGRESS
   ======================================== */

.spinner {
  width: 32px;
  height: 32px;
  border-radius: 9999px;
  border: 3px solid color-mix(in srgb, var(--accent-primary) 25%, transparent);
  border-top-color: var(--accent-primary);
  animation: spin 0.9s linear infinite;
}

.spinner-large {
  width: 42px;
  height: 42px;
  border-width: 4px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Respect reduced motion preference for spinner */
@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation: none;
    border: 3px solid var(--accent-primary);
  }
}

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

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  min-height: 44px;
}

.btn-primary {
  background: var(--accent-primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-secondary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--accent-primary) 35%, transparent);
}

.btn-primary:disabled {
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-primary);
  border-color: var(--border-secondary);
  transform: translateY(-1px);
}

.btn-secondary:disabled {
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  cursor: not-allowed;
}

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

/* Loading screen */
.loading-screen {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(6px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.loading-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.loading-message {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

/* Progress bar */
.progress-bar-container {
  width: 300px;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--accent-primary);
  border-radius: 9999px;
  transition: width 0.3s ease;
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}