/* Reset and global */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #2d3748;
  background: linear-gradient(135deg, #e6f2ff 0%, #c8e6f5 100%);
  min-height: 100vh;
}

/* Header */
header {
  padding: 1.5rem 3rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: transform 0.3s ease;
}
.logo:hover {
  transform: scale(1.05);
}
.logo-text {
  font-size: 2rem;
  font-weight: bold;
  background: linear-gradient(135deg, #1e4a7a 0%, #2b7a9e 50%, #7cb342 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}
nav a {
  color: #333;
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.3s ease;
  position: relative;
}
nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #2b7a9e, #7cb342);
  transform: translateX(-50%);
  transition: width 0.3s ease;
}
nav a:hover {
  background: rgba(43, 122, 158, 0.1);
  color: #2b7a9e;
}
nav a:hover::after {
  width: 80%;
}
nav a.active {
  background: rgba(45, 127, 165, 0.15);
  color: #2d7fa5;
  font-weight: 600;
}
nav a.active::after {
  width: 80%;
  background: linear-gradient(90deg, #1e3a5f, #2d7fa5);
}

html {
  scroll-behavior: smooth;
}

/* ─── Gallery Page Layout ─── */
.gallery-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 4rem 2rem 6rem;
}

.gallery-header {
  text-align: center;
  margin-bottom: 4rem;
  animation: fadeInDown 0.8s ease both;
}

.gallery-header h1 {
  font-size: 3.5rem;
  background: linear-gradient(135deg, #1e3a5f 0%, #2d7fa5 50%, #7cb342 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 1rem;
}
.gallery-header p {
  font-size: 1.3rem;
  color: #4a5568;
  max-width: 700px;
  margin: 0 auto;
}

/* Section title */
.section-title {
  font-size: 1.6rem;
  color: #1e3a5f;
  font-weight: 700;
  margin-bottom: 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(90deg, #2d7fa5, #7cb342) 1;
  display: inline-block;
}

.gallery-section {
  margin-bottom: 4rem;
}

/* ─── Event Cards Grid ─── */
.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.event-card {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.98),
    rgba(230, 242, 255, 0.95)
  );
  border-radius: 20px;
  padding: 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(45, 127, 165, 0.1);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: fadeInUp 0.7s ease both;
  position: relative;
}

.event-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(45, 127, 165, 0.05),
    rgba(124, 179, 66, 0.05)
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  z-index: 0;
}
.event-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  border-color: rgba(45, 127, 165, 0.3);
}
.event-card:hover::before {
  opacity: 1;
}

/* Stagger animations */
.event-card:nth-child(1) {
  animation-delay: 0.05s;
}
.event-card:nth-child(2) {
  animation-delay: 0.1s;
}
.event-card:nth-child(3) {
  animation-delay: 0.15s;
}
.event-card:nth-child(4) {
  animation-delay: 0.2s;
}
.event-card:nth-child(5) {
  animation-delay: 0.25s;
}
.event-card:nth-child(6) {
  animation-delay: 0.3s;
}
.event-card:nth-child(7) {
  animation-delay: 0.35s;
}
.event-card:nth-child(8) {
  animation-delay: 0.4s;
}

/* Cover image area */
.card-cover {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, #1e3a5f, #2d7fa5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}
.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.card-cover .cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 40%,
    rgba(30, 58, 95, 0.6) 100%
  );
}
.card-cover .photo-count {
  position: absolute;
  bottom: 10px;
  right: 12px;
  background: rgba(0, 0, 0, 0.55);
  color: white;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
  letter-spacing: 0.3px;
}

/* Card body */
.card-body {
  padding: 1.75rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  position: relative;
  z-index: 1;
}

.card-icon {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.card-title {
  font-size: 1.25rem;
  color: #1e3a5f;
  font-weight: 700;
  margin-bottom: 0.6rem;
  line-height: 1.3;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.card-date {
  font-size: 0.9rem;
  color: #718096;
  font-weight: 500;
}
.card-badge {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.badge-past {
  background: linear-gradient(135deg, #718096, #a0aec0);
  color: white;
}
.badge-upcoming {
  background: linear-gradient(135deg, #7cb342, #8bc34a);
  color: white;
}

/* Gallery button */
.gallery-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.9rem 1.5rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
  margin-top: auto;
}
.gallery-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s ease;
}
.gallery-btn:hover::before {
  left: 100%;
}

.gallery-btn-active {
  background: linear-gradient(135deg, #2d7fa5, #1e3a5f);
  color: white;
  box-shadow: 0 4px 15px rgba(45, 127, 165, 0.3);
}
.gallery-btn-active:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(45, 127, 165, 0.4);
}

.gallery-btn-disabled {
  background: linear-gradient(135deg, #e2e8f0, #edf2f7);
  color: #a0aec0;
  cursor: not-allowed;
  box-shadow: none;
}
.gallery-btn-disabled::before {
  display: none;
}

/* ─── Empty state ─── */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: #718096;
  grid-column: 1/-1;
}
.empty-state span {
  font-size: 3rem;
  display: block;
  margin-bottom: 1rem;
}

/* ─── Keyframes ─── */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  header {
    padding: 1rem 1.5rem;
  }
  .logo-text {
    font-size: 1.5rem;
  }
  .logo-icon {
    width: 32px;
    height: 32px;
  }
  .gallery-container {
    padding: 2rem 1rem 4rem;
  }
  .gallery-header h1 {
    font-size: 2.2rem;
  }
  .gallery-header p {
    font-size: 1.1rem;
  }
  .events-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* ═══════════════════════════════════════
   INDIVIDUAL EVENT GALLERY PAGE STYLES
   ═══════════════════════════════════════ */

.event-gallery-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 3rem 2rem 6rem;
}

/* Back button */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #2d7fa5;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.3s ease;
  margin-bottom: 2rem;
}
.back-link:hover {
  background: rgba(45, 127, 165, 0.1);
  transform: translateX(-4px);
}

/* Event hero header */
.event-hero {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.98),
    rgba(230, 242, 255, 0.95)
  );
  border-radius: 20px;
  padding: 2.5rem 3rem;
  margin-bottom: 3rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(45, 127, 165, 0.1);
  display: flex;
  align-items: center;
  gap: 2rem;
  animation: fadeInDown 0.7s ease both;
}
.event-hero-icon {
  font-size: 3.5rem;
  flex-shrink: 0;
}
.event-hero-info h1 {
  font-size: 2rem;
  color: #1e3a5f;
  font-weight: 800;
  margin-bottom: 0.4rem;
  line-height: 1.2;
}
.event-hero-info .meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
  color: #718096;
  font-size: 0.95rem;
}
.event-hero-info .meta span {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* Photo count summary */
.photos-summary {
  font-size: 1.05rem;
  color: #4a5568;
  margin-bottom: 2rem;
  font-weight: 500;
}

/* Photo grid */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem;
  animation: fadeInUp 0.7s ease both;
}

.photo-item {
  border-radius: 14px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #1e3a5f, #2d7fa5);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}
.photo-item:hover {
  transform: scale(1.03);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}
.photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.photo-item:hover img {
  transform: scale(1.05);
}

.photo-item .photo-overlay {
  position: absolute;
  inset: 0;
  background: rgba(30, 58, 95, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s ease;
}
.photo-item:hover .photo-overlay {
  background: rgba(30, 58, 95, 0.3);
}
.photo-overlay .zoom-icon {
  color: white;
  font-size: 1.8rem;
  opacity: 0;
  transform: scale(0.7);
  transition: all 0.3s ease;
}
.photo-item:hover .zoom-icon {
  opacity: 1;
  transform: scale(1);
}

/* No photos placeholder */
.no-photos {
  grid-column: 1/-1;
  text-align: center;
  padding: 5rem 2rem;
  color: #a0aec0;
}
.no-photos span {
  font-size: 4rem;
  display: block;
  margin-bottom: 1rem;
}
.no-photos p {
  font-size: 1.1rem;
}
.no-photos small {
  font-size: 0.9rem;
  display: block;
  margin-top: 0.5rem;
  color: #cbd5e0;
}

/* ─── Lightbox ─── */
.lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.lightbox-overlay.open {
  display: flex;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  border-radius: 12px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  object-fit: contain;
}
.lightbox-close {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: white;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  backdrop-filter: blur(4px);
}
.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.1);
}
.lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: white;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  backdrop-filter: blur(4px);
}
.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-50%) scale(1.1);
}
.lightbox-prev {
  left: 1.5rem;
}
.lightbox-next {
  right: 1.5rem;
}
.lightbox-counter {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  font-weight: 500;
  background: rgba(0, 0, 0, 0.4);
  padding: 5px 16px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
}

@media (max-width: 768px) {
  .event-hero {
    flex-direction: column;
    gap: 1rem;
    padding: 1.75rem;
  }
  .event-hero-info h1 {
    font-size: 1.5rem;
  }
  .event-gallery-container {
    padding: 1.5rem 1rem 4rem;
  }
  .photo-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 0.75rem;
  }
  .lightbox-nav {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }
  .lightbox-prev {
    left: 0.5rem;
  }
  .lightbox-next {
    right: 0.5rem;
  }
}