/* =====================================================
   Top Students Page — أوائل الخريجين
   Dark navy / gold "honor ceremony" theme
   Uses the global CSS custom properties defined in style.css
   ===================================================== */

/* ---------- Shared dark surface ---------- */
.top-page-hero,
.filter-bar-section,
.department-block,
main {
  background: linear-gradient(
    180deg,
    var(--color-primary-dark) 0%,
    var(--color-primary) 55%,
    var(--color-primary-dark) 100%
  );
}

main {
  position: relative;
}

/* ---------- Page Hero ---------- */
.top-page-hero {
  position: relative;
  overflow: hidden;
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  text-align: center;
}

.stars-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1.5px 1.5px at 10% 20%, rgba(255, 255, 255, 0.5), transparent),
    radial-gradient(1.5px 1.5px at 80% 30%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 30% 70%, rgba(255, 255, 255, 0.35), transparent),
    radial-gradient(1.5px 1.5px at 60% 80%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 90% 60%, rgba(255, 255, 255, 0.3), transparent),
    radial-gradient(1px 1px at 45% 15%, rgba(255, 255, 255, 0.3), transparent);
  background-repeat: no-repeat;
}

.top-page-hero .container {
  position: relative;
  z-index: 1;
}

.top-page-eyebrow {
  color: var(--color-secondary-light);
  font-weight: 600;
  font-size: 0.938rem;
  letter-spacing: 0.02em;
  margin-bottom: var(--spacing-sm);
}

.top-page-title {
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(
    135deg,
    var(--color-secondary) 0%,
    var(--color-secondary-light) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

.ornament-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  max-width: 320px;
  margin: 0 auto var(--spacing-lg);
}

.ornament-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-secondary) 50%,
    transparent 100%
  );
}

.ornament-icon {
  color: var(--color-secondary-light);
  font-size: 0.75rem;
}

.top-page-subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.9;
}

/* ---------- Filter Bar ---------- */
.filter-bar-section {
  padding: var(--spacing-lg) 0 var(--spacing-2xl);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0.65rem 1.375rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.75);
  border-radius: var(--radius-full);
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-base);
}

.filter-btn i {
  font-size: 0.85rem;
}

.filter-btn:hover {
  border-color: var(--color-secondary-light);
  color: var(--color-secondary-light);
}

.filter-btn.active {
  background: linear-gradient(
    135deg,
    var(--color-secondary) 0%,
    var(--color-secondary-light) 100%
  );
  border-color: transparent;
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

/* ---------- Department Block ---------- */
.department-block {
  padding: var(--spacing-2xl) 0;
}

.department-block.is-hidden {
  display: none;
}

.department-block-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.department-block-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    var(--color-secondary) 0%,
    var(--color-secondary-light) 100%
  );
  border-radius: var(--radius-xl);
  color: var(--color-primary-dark);
  font-size: 1.5rem;
  box-shadow: var(--shadow-md);
}

.department-block-title {
  font-size: 1.625rem;
  color: var(--color-white);
}

/* ---------- Students Grid ---------- */
.students-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.student-card {
  position: relative;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  backdrop-filter: blur(6px);
}

.student-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-secondary-light);
  box-shadow: var(--shadow-xl);
}

.student-card-topbar {
  display: block;
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--color-secondary) 0%,
    var(--color-secondary-light) 100%
  );
}

.student-card.is-first {
  border-color: var(--color-secondary-light);
  box-shadow: 0 0 0 1px var(--color-secondary-light);
}

.first-badge {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.3rem 0.75rem;
  background: linear-gradient(
    135deg,
    var(--color-secondary) 0%,
    var(--color-secondary-light) 100%
  );
  color: var(--color-primary-dark);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.688rem;
}

.student-rank {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 2;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 22, 66, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--color-secondary-light);
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.813rem;
}

.student-photo {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
}

.student-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.student-card:hover .student-photo img {
  transform: scale(1.05);
}

.student-photo-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.25);
  font-size: 2.5rem;
}

.student-body {
  padding: var(--spacing-lg);
  text-align: center;
}

.student-name {
  font-size: 1.063rem;
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.student-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.875rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-full);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.75rem;
  font-weight: 600;
}

.tag i {
  font-size: 0.4rem;
  color: var(--color-secondary-light);
}

.tag-gold {
  border-color: rgba(251, 191, 36, 0.35);
  color: var(--color-secondary-light);
}

/* ---------- No Results ---------- */
.no-results {
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 1.125rem;
  padding: var(--spacing-3xl) 0;
}

/* =====================================================
   Responsive
   ===================================================== */
@media (max-width: 1200px) {
  .students-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 992px) {
  .students-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .top-page-title {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .top-page-title {
    font-size: 2.125rem;
  }

  .filter-bar {
    justify-content: center;
    flex-wrap: wrap;
  }

  .filter-btn {
    flex-shrink: 0;
  }
}

@media (max-width: 576px) {
  .filter-btn {
    padding: 0.55rem 1.1rem;
    font-size: 0.813rem;
  }

  .students-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .top-page-title {
    font-size: 1.75rem;
  }

  .top-page-subtitle {
    font-size: 0.938rem;
  }
}