:root {
  --cyan: #00AEEF;
  --red: #E63946;
  --navy: #0A1628;
  --white: #FFFFFF;
  --light: #EEF8FD;
  --gray: #6B7280;
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --white: #0A1628;
  --navy: #FFFFFF;
  --light: #12243d;
  --gray: #9ca3af;
}

body {
  transition: var(--transition);
  background: var(--white);
  color: var(--navy);
}

/* Background Animated Blobs */
.bg-blobs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  width: 45vw;
  height: 45vw;
  background: var(--cyan);
  filter: blur(100px);
  opacity: 0.12;
  border-radius: 50%;
  animation: moveBlob 20s infinite alternate cubic-bezier(0.45, 0, 0.55, 1);
}

.blob-2 {
  background: var(--red);
  width: 35vw;
  height: 35vw;
  left: 60%;
  top: 40%;
  animation-duration: 25s;
  animation-delay: -5s;
}

.blob-3 {
  background: var(--cyan);
  width: 25vw;
  height: 25vw;
  left: 20%;
  top: 70%;
  animation-duration: 18s;
  animation-delay: -2s;
}

@keyframes moveBlob {
  0% { transform: translate(-15%, -15%) rotate(0deg); }
  100% { transform: translate(15%, 15%) rotate(180deg); }
}

/* Theme Toggle Button */
.theme-toggle {
  background: var(--light);
  border: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
  margin-right: 15px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(10deg);
  background: var(--cyan);
  color: white;
}

/* Common Dark Mode Overrides */
[data-theme="dark"] nav {
  background: rgba(10, 22, 40, 0.85) !important;
  border-bottom: 1px solid rgba(0, 174, 239, 0.3) !important;
}

[data-theme="dark"] .nav-name, 
[data-theme="dark"] .nav-links a {
  color: white !important;
}

[data-theme="dark"] .course-card, 
[data-theme="dark"] .partner-box,
[data-theme="dark"] .content-card,
[data-theme="dark"] .sidebar-card,
[data-theme="dark"] .short-card {
  background: #12243d !important;
  color: white !important;
}

[data-theme="dark"] .section-title,
[data-theme="dark"] .hero-tagline,
[data-theme="dark"] h1, 
[data-theme="dark"] h2, 
[data-theme="dark"] h3 {
  color: white !important;
}

[data-theme="dark"] .section-sub,
[data-theme="dark"] .hero-sub,
[data-theme="dark"] .hero-location,
[data-theme="dark"] .course-desc,
[data-theme="dark"] .partner-sub,
[data-theme="dark"] .partner-x,
[data-theme="dark"] .stat-label,
[data-theme="dark"] .enroll-content p,
[data-theme="dark"] .enroll-note,
[data-theme="dark"] p {
  color: #9ca3af !important;
}

[data-theme="dark"] .hero,
[data-theme="dark"] .hero-subpage,
[data-theme="dark"] .hero-course,
[data-theme="dark"] .hero-gallery {
  background: linear-gradient(135deg, #0A1628 0%, #060D1A 100%) !important;
}

[data-theme="dark"] .stats-bar,
[data-theme="dark"] .enroll,
[data-theme="dark"] footer {
  background: #060D1A !important;
}

[data-theme="dark"] .btn-outline {
  border-color: rgba(255,255,255,0.2) !important;
  color: white !important;
}

[data-theme="dark"] .admissions-badge {
  background: #12243d !important;
}