body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  background: radial-gradient(ellipse at center, #0f0f0f 0%, #000000 100%);
  background-attachment: fixed;
}

/* Enhanced web pattern background */
.web-pattern {
  background-image: radial-gradient(
      circle at 25% 25%,
      rgba(0, 255, 136, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 75% 75%,
      rgba(0, 255, 136, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 50% 50%,
      rgba(57, 255, 20, 0.05) 0%,
      transparent 70%
    );
  background-size: 800px 800px, 600px 600px, 1000px 1000px;
  animation: float 8s ease-in-out infinite;
}

/* Enhanced spider web decoration */
.web-decoration::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2300ff88' fill-opacity='0.05'%3E%3Cpath d='M40 40l20-20M40 40l20 20M40 40l-20-20M40 40l-20 20M40 20v40M20 40h40M30 30l20 20M50 30l-20 20'/%3E%3Ccircle cx='40' cy='40' r='2'/%3E%3Ccircle cx='20' cy='20' r='1'/%3E%3Ccircle cx='60' cy='20' r='1'/%3E%3Ccircle cx='20' cy='60' r='1'/%3E%3Ccircle cx='60' cy='60' r='1'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")
    repeat;
  pointer-events: none;
  opacity: 0.3;
}

/* Cyber grid background */
.cyber-grid {
  background-image: linear-gradient(rgba(0, 255, 136, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 136, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
}

/* Hide all pages by default */
.page {
  display: none;
}

/* Show active page */
.page.active {
  display: block;
  animation: fade-in 0.8s ease-out;
}

/* Active tab styling */
.admin-tab.active {
  background: linear-gradient(135deg, #00ff88, #00cc6a);
  color: #000;
  box-shadow: 0 0 25px rgba(0, 255, 136, 0.4);
  transform: translateY(-2px);
}

/* Active form container */
.form-container.active {
  display: block;
  animation: slide-up 0.6s ease-out;
}

/* Hidden form container */
.form-container {
  display: none;
}

/* Enhanced user dropdown */
.user-dropdown {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  width: 280px;
  z-index: 50;
  animation: scale-in 0.3s ease-out;
}

.user-dropdown.active {
  display: block;
}

/* Enhanced glass effect */
.glass {
  background: rgba(26, 26, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 255, 136, 0.15);
  position: relative;
  overflow: hidden;
}

.glass::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0, 255, 136, 0.1),
    transparent
  );
  animation: shimmer 3s infinite;
}

/* Enhanced video player */
.video-player {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  position: relative;
  background: linear-gradient(135deg, #1a1a1a, #0f0f0f);
  border-radius: 1rem;
  overflow: hidden;
  border: 2px solid rgba(0, 255, 136, 0.3);
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.2);
}

.video-player video,
.video-player iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 0.8rem;
}

/* Enhanced course card */
.course-card {
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(0, 255, 136, 0.2);
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    145deg,
    rgba(26, 26, 26, 0.9),
    rgba(15, 15, 15, 0.95)
  );
}

.course-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    45deg,
    transparent 30%,
    rgba(0, 255, 136, 0.05) 50%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
}

.course-card:hover::before {
  opacity: 1;
}

.course-card:hover {
  transform: translateY(-12px) scale(1.03);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4),
    0 0 40px rgba(0, 255, 136, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  border-color: rgba(0, 255, 136, 0.5);
}

/* Course image container */
.course-image-container {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    rgba(0, 255, 136, 0.1),
    rgba(0, 204, 106, 0.05)
  );
}

.course-image-container::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    45deg,
    transparent,
    rgba(0, 255, 136, 0.1),
    transparent
  );
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.course-card:hover .course-image-container::after {
  transform: translateX(100%);
}

/* Enhanced custom scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: rgba(26, 26, 26, 0.8);
  border-radius: 5px;
  border: 1px solid rgba(0, 255, 136, 0.1);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #00ff88, #00cc6a);
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #00cc6a, #00aa55);
  box-shadow: 0 0 15px rgba(0, 255, 136, 0.5);
}

/* Enhanced sidebar active link */
.nav-link.active {
  background: linear-gradient(
    90deg,
    rgba(0, 255, 136, 0.2),
    rgba(0, 204, 106, 0.15)
  );
  border-left: 4px solid #00ff88;
  color: #00ff88;
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.15);
  transform: translateX(5px);
}

.nav-link:hover {
  background: rgba(0, 255, 136, 0.08);
  color: #00ff88;
  transform: translateX(3px);
  transition: all 0.3s ease;
}

/* Enhanced video list item */
.video-list-item {
  transition: all 0.4s ease;
  border: 1px solid rgba(0, 255, 136, 0.15);
  position: relative;
  overflow: hidden;
}

.video-list-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 3px;
  background: linear-gradient(to bottom, #00ff88, #00cc6a);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.video-list-item:hover::before {
  transform: scaleY(1);
}

.video-list-item:hover {
  background: rgba(0, 255, 136, 0.12);
  border-color: rgba(0, 255, 136, 0.4);
  transform: translateX(5px);
}

.video-list-item.active {
  background: linear-gradient(
    90deg,
    rgba(0, 255, 136, 0.25),
    rgba(0, 204, 106, 0.15)
  );
  border-left: 4px solid #00ff88;
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.15);
}

/* Enhanced button styles */
.btn-primary {
  background: linear-gradient(135deg, #00ff88, #00cc6a);
  color: #000;
  font-weight: 700;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 255, 136, 0.3);
}

.btn-primary::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;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #00cc6a, #00aa55);
  box-shadow: 0 8px 25px rgba(0, 255, 136, 0.5);
  transform: translateY(-3px) scale(1.05);
}

/* Enhanced input styles */
.input-web {
  background: rgba(26, 26, 26, 0.9);
  border: 2px solid rgba(0, 255, 136, 0.25);
  color: white;
  transition: all 0.4s ease;
  position: relative;
}

.input-web:focus {
  border-color: #00ff88;
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
  outline: none;
  background: rgba(26, 26, 26, 0.95);
}

/* Enhanced logo animation */
.logo-container {
  position: relative;
  animation: float 4s ease-in-out infinite;
}

.logo-glow {
  filter: drop-shadow(0 0 15px rgba(0, 255, 136, 0.7));
  transition: filter 0.3s ease;
}

.logo-glow:hover {
  filter: drop-shadow(0 0 25px rgba(0, 255, 136, 1));
}

/* Enhanced hero section */
.hero-gradient {
  background: linear-gradient(
    135deg,
    rgba(0, 255, 136, 0.15) 0%,
    rgba(0, 0, 0, 0.8) 50%,
    rgba(0, 255, 136, 0.08) 100%
  );
  position: relative;
}

.hero-gradient::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%2300ff88' fill-opacity='0.03'%3E%3Cpath d='M50 50m-20 0a20 20 0 1 1 40 0a20 20 0 1 1 -40 0M50 30v40M30 50h40M35 35l30 30M65 35l-30 30'/%3E%3C/g%3E%3C/svg%3E")
    repeat;
  pointer-events: none;
}

/* Enhanced stats cards */
.stat-card {
  background: linear-gradient(
    145deg,
    rgba(26, 26, 26, 0.95),
    rgba(15, 15, 15, 0.98)
  );
  border: 1px solid rgba(0, 255, 136, 0.25);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(
    from 0deg,
    transparent,
    rgba(0, 255, 136, 0.1),
    transparent
  );
  animation: spin 4s linear infinite;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-card:hover {
  border-color: rgba(0, 255, 136, 0.5);
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.2);
  transform: translateY(-5px);
}

/* Modal backdrop enhancement */
.modal-backdrop {
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  background: rgba(0, 0, 0, 0.8);
}

/* Floating elements */
.floating-element {
  animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(2n) {
  animation-delay: -2s;
}

.floating-element:nth-child(3n) {
  animation-delay: -4s;
}

/* Glitch effect for special elements */
.glitch {
  position: relative;
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
}

.glitch::before {
  animation: glitch-1 0.5s infinite;
  color: #00ff88;
  z-index: -1;
}

.glitch::after {
  animation: glitch-2 0.5s infinite;
  color: #ff0088;
  z-index: -2;
}

@keyframes glitch-1 {
  0%,
  14%,
  15%,
  49%,
  50%,
  99%,
  100% {
    transform: translate(0);
  }
  15%,
  49% {
    transform: translate(-2px, 1px);
  }
}

@keyframes glitch-2 {
  0%,
  20%,
  21%,
  62%,
  63%,
  99%,
  100% {
    transform: translate(0);
  }
  21%,
  62% {
    transform: translate(2px, -1px);
  }
}

/* Neon text effect */
.neon-text {
  color: #00ff88;
  text-shadow: 0 0 5px #00ff88, 0 0 10px #00ff88, 0 0 15px #00ff88,
    0 0 20px #00ff88;
  animation: neon-flicker 2s infinite alternate;
}

@keyframes neon-flicker {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

/* Progress bar enhancement */
.progress-bar {
  background: linear-gradient(90deg, #00ff88, #00cc6a, #00aa55);
  background-size: 200% 100%;
  animation: progress-shine 2s infinite;
}

@keyframes progress-shine {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Course category badges */
.category-badge {
  background: linear-gradient(
    135deg,
    rgba(0, 255, 136, 0.2),
    rgba(0, 204, 106, 0.1)
  );
  border: 1px solid rgba(0, 255, 136, 0.3);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.category-badge:hover {
  background: linear-gradient(
    135deg,
    rgba(0, 255, 136, 0.3),
    rgba(0, 204, 106, 0.2)
  );
  transform: scale(1.05);
}

/* Add these styles to your existing styles */
@media (max-width: 1024px) {
  .input-web {
    width: 200px;
  }
}

@media (max-width: 768px) {
  .input-web {
    width: 150px;
  }

  .hero-gradient {
    padding: 2rem !important;
  }

  .hero-gradient h1 {
    font-size: 2.5rem !important;
  }

  .stat-card {
    padding: 1.5rem !important;
  }

  .course-card {
    margin-bottom: 1rem;
  }
}

@media (max-width: 640px) {
  .input-web {
    display: none;
  }

  .hero-gradient h1 {
    font-size: 2rem !important;
  }

  .stat-card {
    padding: 1rem !important;
  }
}