/* Premium Dark Mode Override */
:root {
  --bg: #070a13;
  --card: rgba(16, 25, 43, 0.65);
  --card-hover: rgba(22, 33, 55, 0.85);
  --text: #f1f5f9;
  --muted: #94a3b8;
  --accent: #00f0ff;
  --accent-hover: #33f3ff;
  --accent-light: #a5f3fc;
  --accent-2: #8b5cf6;
  --border: rgba(255, 255, 255, 0.1);
  --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.15);
}

body {
  background: var(--bg) !important;
  color: var(--text);
}

body::before {
  background: radial-gradient(circle at 15% 20%, rgba(0, 240, 255, 0.15), transparent 40%),
    radial-gradient(circle at 70% 10%, rgba(139, 92, 246, 0.15), transparent 35%),
    radial-gradient(circle at 85% 70%, rgba(0, 153, 255, 0.12), transparent 40%) !important;
  opacity: 0.8;
}

/* Glassmorphism for Navigation */
.top-nav {
  background: rgba(7, 10, 19, 0.7) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.brand-name {
  color: var(--text) !important;
}

.nav-toggle span {
  background: var(--text) !important;
}

.lang-toggle {
  background: rgba(255, 255, 255, 0.05) !important;
  border-color: var(--border) !important;
  color: var(--text) !important;
}

/* Cards */
.card, .pub-card, .project-card, .social-card, .patent-card, .service-card, .gallery-lede, .gallery-meta {
  background: var(--card) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border) !important;
  box-shadow: var(--shadow) !important;
  color: var(--text) !important;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease, border-color 0.4s ease !important;
  transform-style: preserve-3d;
}

.card:hover, .pub-card:hover, .project-card:hover, .social-card:hover, .patent-card:hover, .service-card:hover {
  background: var(--card-hover) !important;
  border-color: rgba(0, 240, 255, 0.4) !important;
  box-shadow: var(--shadow-glow) !important;
  transform: translateY(-8px) scale(1.01);
}

/* Typography Enhancements */
h1, h2, h3, .brand-name {
  color: #fff;
}

h2 {
  background: linear-gradient(to right, #fff, #a5f3fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Specific section overrides */
.projects-section, .patents-section, .service-section, .publications-section {
  background: transparent !important;
}

/* Contact / CTA */
.cta {
  background: linear-gradient(120deg, rgba(16,25,43,0.8), rgba(8,16,33,0.9)) !important;
  border: 1px solid var(--border) !important;
}
.cta p {
  color: var(--muted) !important;
}
.cta .btn.primary {
  background: var(--accent) !important;
  color: #000 !important;
  border: none !important;
  box-shadow: 0 0 15px rgba(0,240,255,0.4) !important;
}
.cta .btn.ghost {
  border-color: var(--accent) !important;
  color: var(--accent) !important;
  background: transparent !important;
}

/* Footer */
.page-footer {
  background: rgba(7, 10, 19, 0.8) !important;
  border-color: var(--border) !important;
  color: var(--muted) !important;
}
.footer-branding-block {
  background: rgba(16, 25, 43, 0.4) !important;
  border-color: var(--border) !important;
}

/* Timeline */
.timeline {
  border-left-color: rgba(255,255,255,0.1) !important;
}
.timeline-dot {
  border-color: #070a13 !important;
  box-shadow: 0 0 10px var(--accent) !important;
}

/* Tags and Pills */
.tag {
  background: rgba(0, 240, 255, 0.1) !important;
  color: var(--accent) !important;
}
.pill {
  background: rgba(139, 92, 246, 0.15) !important;
  color: #c4b5fd !important;
}
.badge {
  background: rgba(0, 240, 255, 0.1) !important;
  color: var(--accent) !important;
}

/* Buttons */
.btn {
  background: rgba(255,255,255,0.05);
  color: var(--text);
  border-color: var(--border);
}
.btn.primary-lg {
  background: linear-gradient(135deg, var(--accent), #0284c7) !important;
  color: #000 !important;
  border: none !important;
  box-shadow: 0 0 20px rgba(0,240,255,0.3) !important;
}
.btn.ghost-lg {
  border-color: var(--accent) !important;
  color: var(--accent) !important;
  background: transparent !important;
}
.btn.ghost-lg:hover, .btn.primary-lg:hover {
  filter: brightness(1.2);
}

/* Project Tech Badges */
.badge-tech {
  background: rgba(0,0,0,0.6) !important;
  color: #fff !important;
}

/* Data list */
.data-list li {
  background: rgba(255,255,255,0.03) !important;
  border-color: var(--border) !important;
}

/* News List */
.news-list li {
  border-bottom-color: var(--border) !important;
}

/* Links */
.link-chip {
  background: rgba(0, 240, 255, 0.1) !important;
  color: var(--accent) !important;
  border-color: rgba(0, 240, 255, 0.2) !important;
}

/* Social icons */
.social-icon {
  background: rgba(0, 240, 255, 0.1) !important;
}
.social-link {
  background: rgba(255, 255, 255, 0.05) !important;
  border-color: var(--border) !important;
  color: var(--text) !important;
}

/* Scroll Progress Bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(to right, var(--accent), var(--accent-2));
  width: 0%;
  z-index: 9999;
  transition: width 0.1s ease-out;
}

/* Particles Canvas */
#particles-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* Profile Photo */
.profile-photo {
  background: rgba(255,255,255,0.05) !important;
}

/* Nav links mobile fix */
@media (max-width: 820px) {
  .nav-links {
    background: rgba(7, 10, 19, 0.95) !important;
    backdrop-filter: blur(16px);
  }
}

/* Contact Info Item Override */
.contact-item {
  color: var(--text) !important;
}

.gallery-visual {
  background: rgba(0,0,0,0.4) !important;
}