/* 
 * College Directory - Shared CSS Styles
 * Consolidated and organized CSS for better maintainability
 */

/* ===========================================
   CSS CUSTOM PROPERTIES (CSS Variables)
   =========================================== */
.college-directory-main,
.college-directory-container,
.college-details-scoped {
  /* Color Palette */
  --primary-color: #667eea;
  --primary-hover: #5a67d8;
  --secondary-color: #764ba2;
  --success-color: #059669;
  --warning-color: #f59e0b;
  --danger-color: #dc2626;
  --text-primary: #2d3748;
  --text-secondary: #4a5568;
  --text-muted: #6b7280;
  --border-color: #e2e8f0;
  --background-light: #f7fafc;
  --background-white: #ffffff;

  /* Gradients */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --hero-gradient: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
  --filter-gradient: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);

  /* College Tile Gradients */
  --tile-gradient-1: linear-gradient(135deg, #d0e6ff, #a0c4ff);
  --tile-gradient-2: linear-gradient(135deg, #ffd0a6, #ff9a56);
  --tile-gradient-3: linear-gradient(135deg, #b4ffb4, #66ff66);
  --tile-gradient-4: linear-gradient(135deg, #ffc6ff, #ff66ff);
  --tile-gradient-5: linear-gradient(135deg, #ffffb4, #ffff66);
  --tile-gradient-6: linear-gradient(135deg, #ffb4b4, #ff6666);
  --tile-gradient-7: linear-gradient(135deg, #b4ffff, #66ffff);
  --tile-gradient-8: linear-gradient(135deg, #e6b4ff, #cc66ff);
  --tile-gradient-9: linear-gradient(135deg, #ffccb4, #ff9966);
  --tile-gradient-10: linear-gradient(135deg, #ccffb4, #99ff66);

  /* Spacing & Layout */
  --border-radius: 20px;
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --padding-sm: 0.5rem;
  --padding-md: 1rem;
  --padding-lg: 2rem;
  --margin-sm: 0.5rem;
  --margin-md: 1rem;
  --margin-lg: 2rem;

  /* Shadows */
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --hover-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  --focus-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);

  /* Animations */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.85rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.2rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --line-height-tight: 1.2;
  --line-height-normal: 1.4;
  --line-height-relaxed: 1.6;

  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ===========================================
   GLOBAL RESET & BASE STYLES
   =========================================== */
.college-directory-main,
.college-directory-container,
.college-details-scoped {
  box-sizing: border-box;
  font-family: var(--font-family);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
}

.college-directory-main *,
.college-directory-container *,
.college-details-scoped *,
.college-directory-main *::before,
.college-directory-container *::before,
.college-details-scoped *::before,
.college-directory-main *::after,
.college-directory-container *::after,
.college-details-scoped *::after {
  box-sizing: inherit;
}

/* ===========================================
   UTILITY CLASSES
   =========================================== */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mb-0 {
  margin-bottom: 0;
}

.mb-1 {
  margin-bottom: var(--margin-sm);
}

.mb-2 {
  margin-bottom: var(--margin-md);
}

.mb-3 {
  margin-bottom: var(--margin-lg);
}

.mt-0 {
  margin-top: 0;
}

.mt-1 {
  margin-top: var(--margin-sm);
}

.mt-2 {
  margin-top: var(--margin-md);
}

.mt-3 {
  margin-top: var(--margin-lg);
}

.p-0 {
  padding: 0;
}

.p-1 {
  padding: var(--padding-sm);
}

.p-2 {
  padding: var(--padding-md);
}

.p-3 {
  padding: var(--padding-lg);
}

/* ===========================================
   FONT AWESOME ICONS
   =========================================== */
.college-directory-main .fa,
.college-directory-main .fas,
.college-directory-main .far,
.college-directory-main .fab,
.college-directory-container .fa,
.college-directory-container .fas,
.college-directory-container .far,
.college-directory-container .fab,
.college-details-scoped .fa,
.college-details-scoped .fas,
.college-details-scoped .far,
.college-details-scoped .fab {
  font-family: "Font Awesome 6 Free", "Font Awesome 5 Free", "Font Awesome 5 Pro";
  font-weight: 900;
}

.college-directory-main .far,
.college-directory-container .far,
.college-details-scoped .far {
  font-weight: 400;
}

.tile-icon {
  margin: 0 3px;
  font-size: var(--font-size-sm);
  color: inherit;
}

/* ===========================================
   ANIMATION KEYFRAMES
   =========================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* ===========================================
   LOADING STATES
   =========================================== */
.loading-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-secondary);
  animation: fadeIn 0.5s ease-in;
}

.loading-state p {
  margin-top: 1rem;
  font-size: var(--font-size-lg);
  font-weight: 500;
}

.loading-spinner {
  display: inline-block;
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-color);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
  margin-bottom: 1rem;
}

/* Skeleton loading for college cards */
.skeleton-card {
  background: var(--background-light);
  border-radius: var(--border-radius-md);
  padding: 1rem;
  margin-bottom: 1rem;
  animation: pulse 1.5s ease-in-out infinite;
}

.skeleton-line {
  background: var(--border-color);
  height: 1rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.skeleton-line.short {
  width: 60%;
}

.skeleton-line.medium {
  width: 80%;
}

.skeleton-line.long {
  width: 100%;
}

/* ===========================================
   FOCUS MANAGEMENT & ACCESSIBILITY
   =========================================== */
.college-directory-main .filter-input:focus,
.college-directory-main .filter-select:focus,
.college-directory-main .filter-btn:focus,
.college-directory-main .sort-dropdown:focus,
.college-directory-container button:focus,
.college-details-scoped button:focus {
  outline: none;
  box-shadow: var(--focus-shadow);
  border-color: var(--primary-color);
}

/* High contrast mode support */
@media (prefers-contrast: high) {

  .college-directory-main,
  .college-directory-container,
  .college-details-scoped {
    --border-color: #000000;
    --text-primary: #000000;
    --text-secondary: #000000;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {

  .college-directory-main *,
  .college-directory-container *,
  .college-details-scoped * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===========================================
   PRINT STYLES
   =========================================== */
@media print {

  .college-details-scoped .modal-close {
    display: none !important;
  }

  .college-directory-main .box,
  .college-directory-container .box {
    box-shadow: none !important;
    border: 1px solid #000 !important;
    margin-bottom: 1rem !important;
    page-break-inside: avoid;
  }
}