* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: #0f172a;
  color: #ffffff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  overflow-x: hidden;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  color: #3b82f6;
  text-transform: uppercase;
  margin-bottom: 15px;
}

.section-title {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #f97316, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-description {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.7;
}

.footer {
  background: rgba(17, 24, 39, 0.8);
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid rgba(59, 130, 246, 0.2);
}

.footer p {
  margin: 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

.back-btn {
  position: fixed;
  top: 30px;
  left: 30px;
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(10px);
  color: #ffffff;
  padding: 14px 28px;
  border: 2px solid rgba(59, 130, 246, 0.3);
  border-radius: 12px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.back-btn:hover {
  background: rgba(59, 130, 246, 0.2);
  border-color: #3b82f6;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.hero-welcome {
  padding: 100px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    rgba(17, 24, 39, 0.95),
    rgba(26, 35, 50, 0.9)
  );
}

.hero-welcome::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(249, 115, 22, 0.15),
    transparent 70%
  );
  pointer-events: none;
}

.hero-welcome h1 {
  font-size: 72px;
  font-weight: 900;
  letter-spacing: 3px;
  margin: 0;
  background: linear-gradient(135deg, #ffffff, #e0e7ff, #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out;
}

.hero-welcome p {
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 4px;
  margin-top: 15px;
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out 0.3s backwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-photos {
  height: 50vh;
  width: 100%;
  position: relative;
  overflow: hidden;
  display: flex;
  gap: 2px;
}

.hero-photo-item {
  flex: 1;
  position: relative;
  overflow: hidden;
  transition: all 0.5s ease;
  filter: brightness(0.8);
  background: #1a1a2e;
}

.hero-photo-item:hover {
  flex: 1.5;
  filter: brightness(1);
}

.hero-photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.hero-photo-item:hover img {
  transform: scale(1.1);
}

.anniversary-hero {
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.anniversary-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(249, 115, 22, 0.15),
    transparent 70%
  );
  pointer-events: none;
}

.anniversary-badge {
  display: inline-block;
  background: linear-gradient(
    135deg,
    rgba(249, 115, 22, 0.3),
    rgba(251, 146, 60, 0.3)
  );
  backdrop-filter: blur(10px);
  padding: 12px 30px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  border: 1px solid rgba(249, 115, 22, 0.4);
  margin-bottom: 30px;
  color: #f97316;
}

.anniversary-hero h1 {
  font-size: 56px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #f97316, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.anniversary-hero p {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.gallery-section {
  padding: 80px 0 100px;
  position: relative;
}

.gallery-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 30% 50%,
      rgba(59, 130, 246, 0.08),
      transparent 60%
    ),
    radial-gradient(
      circle at 70% 80%,
      rgba(249, 115, 22, 0.08),
      transparent 60%
    );
  pointer-events: none;
}

.video-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 40px;
  margin-top: 60px;
  position: relative;
  padding: 0 20px;
}

.video-item {
  background: linear-gradient(
    135deg,
    rgba(26, 35, 50, 0.6),
    rgba(17, 24, 39, 0.8)
  );
  backdrop-filter: blur(20px);
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(59, 130, 246, 0.2);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.video-item:hover {
  transform: translateY(-12px) scale(1.02);
  border-color: #06b6d4;
  box-shadow: 0 25px 70px rgba(59, 130, 246, 0.4),
    0 0 50px rgba(59, 130, 246, 0.2);
}

.video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  overflow: hidden;
  background: rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-title {
  padding: 20px;
  font-size: 16px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  text-align: center;
  background: linear-gradient(
    to bottom,
    rgba(17, 24, 39, 0.8),
    rgba(17, 24, 39, 0.95)
  );
}

/* Responsive Design */
@media (max-width: 768px) {
  .back-btn {
    top: 15px;
    left: 15px;
    padding: 10px 18px;
    font-size: 13px;
  }

  .hero-welcome h1 {
    font-size: 36px;
  }

  .hero-welcome p {
    font-size: 14px;
    letter-spacing: 2px;
  }

  .hero-photos {
    flex-direction: column;
    height: auto;
    min-height: 300px;
  }

  .hero-photo-item {
    min-height: 200px;
  }

  .video-gallery-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .section-title {
    font-size: 32px;
  }

  .anniversary-hero h1 {
    font-size: 36px;
  }

  .anniversary-hero p {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .back-btn {
    top: 10px;
    left: 10px;
    padding: 8px 14px;
    font-size: 12px;
    gap: 6px;
  }

  .hero-welcome {
    padding: 80px 0 40px;
  }

  .hero-welcome h1 {
    font-size: 28px;
  }

  .hero-welcome p {
    font-size: 12px;
  }

  .anniversary-hero {
    padding: 80px 0 60px;
  }

  .anniversary-hero h1 {
    font-size: 28px;
  }

  .anniversary-badge {
    font-size: 12px;
    padding: 10px 20px;
  }

  .section-title {
    font-size: 24px;
  }

  .section-description {
    font-size: 14px;
  }

  .video-gallery-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 10px;
  }* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: #0f172a;
  color: #ffffff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  overflow-x: hidden;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  color: #3b82f6;
  text-transform: uppercase;
  margin-bottom: 15px;
}

.section-title {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #f97316, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-description {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.7;
}

.footer {
  background: rgba(17, 24, 39, 0.8);
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid rgba(59, 130, 246, 0.2);
}

.footer p {
  margin: 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

.back-btn {
  position: fixed;
  top: 30px;
  left: 30px;
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(10px);
  color: #ffffff;
  padding: 14px 28px;
  border: 2px solid rgba(59, 130, 246, 0.3);
  border-radius: 12px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.back-btn:hover {
  background: rgba(59, 130, 246, 0.2);
  border-color: #3b82f6;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.hero-welcome {
  padding: 100px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    rgba(17, 24, 39, 0.95),
    rgba(26, 35, 50, 0.9)
  );
}

.hero-welcome::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(249, 115, 22, 0.15),
    transparent 70%
  );
  pointer-events: none;
}

.hero-welcome h1 {
  font-size: 72px;
  font-weight: 900;
  letter-spacing: 3px;
  margin: 0;
  background: linear-gradient(135deg, #ffffff, #e0e7ff, #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out;
}

.hero-welcome p {
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 4px;
  margin-top: 15px;
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out 0.3s backwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-photos {
  min-height: 50vh;
  width: 100%;
  position: relative;
  overflow: hidden;
  display: flex;
  gap: 2px;
}

.hero-photo-item {
  flex: 1;
  position: relative;
  overflow: hidden;
  transition: flex 0.5s ease, filter 0.3s ease;
  filter: brightness(0.8);
  background: #1a1a2e;
  min-height: 400px;
}

.hero-photo-item:hover {
  flex: 1.5;
  filter: brightness(1);
}

.hero-photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.5s ease;
  display: block;
}

.hero-photo-item:hover img {
  transform: scale(1.1);
}

.anniversary-hero {
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.anniversary-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(249, 115, 22, 0.15),
    transparent 70%
  );
  pointer-events: none;
}

.anniversary-badge {
  display: inline-block;
  background: linear-gradient(
    135deg,
    rgba(249, 115, 22, 0.3),
    rgba(251, 146, 60, 0.3)
  );
  backdrop-filter: blur(10px);
  padding: 12px 30px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  border: 1px solid rgba(249, 115, 22, 0.4);
  margin-bottom: 30px;
  color: #f97316;
}

.anniversary-hero h1 {
  font-size: 56px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #f97316, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.anniversary-hero p {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.gallery-section {
  padding: 80px 0 100px;
  position: relative;
}

.gallery-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 30% 50%,
      rgba(59, 130, 246, 0.08),
      transparent 60%
    ),
    radial-gradient(
      circle at 70% 80%,
      rgba(249, 115, 22, 0.08),
      transparent 60%
    );
  pointer-events: none;
}

.video-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 40px;
  margin-top: 60px;
  position: relative;
  padding: 0 20px;
}

.video-item {
  background: linear-gradient(
    135deg,
    rgba(26, 35, 50, 0.6),
    rgba(17, 24, 39, 0.8)
  );
  backdrop-filter: blur(20px);
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(59, 130, 246, 0.2);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.video-item:hover {
  transform: translateY(-12px) scale(1.02);
  border-color: #06b6d4;
  box-shadow: 0 25px 70px rgba(59, 130, 246, 0.4),
    0 0 50px rgba(59, 130, 246, 0.2);
}

.video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  overflow: hidden;
  background: rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-title {
  padding: 20px;
  font-size: 16px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  text-align: center;
  background: linear-gradient(
    to bottom,
    rgba(17, 24, 39, 0.8),
    rgba(17, 24, 39, 0.95)
  );
}

/* Responsive Design */
@media (max-width: 768px) {
  .back-btn {
    top: 15px;
    left: 15px;
    padding: 10px 18px;
    font-size: 13px;
  }

  .hero-welcome h1 {
    font-size: 36px;
  }

  .hero-welcome p {
    font-size: 14px;
    letter-spacing: 2px;
  }

  .hero-photos {
    flex-direction: column;
    min-height: auto;
  }

  .hero-photo-item {
    min-height: 250px;
    flex: none;
  }

  .hero-photo-item:hover {
    flex: none;
  }

  .video-gallery-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .section-title {
    font-size: 32px;
  }

  .anniversary-hero h1 {
    font-size: 36px;
  }

  .anniversary-hero p {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .back-btn {
    top: 10px;
    left: 10px;
    padding: 8px 14px;
    font-size: 12px;
    gap: 6px;
  }

  .hero-welcome {
    padding: 80px 0 40px;
  }

  .hero-welcome h1 {
    font-size: 28px;
  }

  .hero-welcome p {
    font-size: 12px;
  }

  .hero-photos {
    min-height: auto;
  }

  .hero-photo-item {
    min-height: 200px;
  }

  .anniversary-hero {
    padding: 80px 0 60px;
  }

  .anniversary-hero h1 {
    font-size: 28px;
  }

  .anniversary-badge {
    font-size: 12px;
    padding: 10px 20px;
  }

  .section-title {
    font-size: 24px;
  }

  .section-description {
    font-size: 14px;
  }

  .video-gallery-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 10px;
  }
}

/* Prevent layout shifts */
@media (max-width: 1024px) {
  .hero-photo-item {
    min-height: 300px;
  }
}

/* Touch device optimization */
@media (hover: none) and (pointer: coarse) {
  .hero-photo-item:hover {
    flex: 1;
    filter: brightness(0.8);
  }
  
  .hero-photo-item:active {
    filter: brightness(1);
  }
}
}