/* ============================================
   Zoltan Vashegyi - Portfolio
   Dark Modern Theme
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* --- Design Tokens --- */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #22223a;
  --bg-nav: rgba(10, 10, 15, 0.85);
  --bg-overlay: rgba(10, 10, 15, 0.95);

  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --text-heading: #fafafa;

  --accent: #00d4ff;
  --accent-secondary: #7c3aed;
  --accent-gradient: linear-gradient(135deg, #00d4ff, #7c3aed);
  --accent-glow: 0 0 20px rgba(0, 212, 255, 0.3);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Container */
  --container-max: 1200px;
  --nav-height: 72px;
}

/* --- Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: #33ddff;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-heading);
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: var(--font-size-5xl); letter-spacing: -0.02em; }
h2 { font-size: var(--font-size-3xl); letter-spacing: -0.01em; }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
  margin-bottom: 1em;
  color: var(--text-secondary);
}

strong, b {
  color: var(--text-heading);
  font-weight: 600;
}

em, i {
  font-style: italic;
}

::selection {
  background: rgba(0, 212, 255, 0.3);
  color: #fff;
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-center { text-align: center; }
.text-mono { font-family: var(--font-mono); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* --- Grid --- */
.grid {
  display: grid;
  gap: var(--space-xl);
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-nav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: background var(--transition-base);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--text-heading);
  letter-spacing: -0.01em;
  transition: color var(--transition-fast);
}
.nav-logo:hover {
  color: var(--accent);
}
.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-link {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}
.nav-link:hover,
.nav-link.active {
  color: var(--text-heading);
  background: rgba(255, 255, 255, 0.05);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}
.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}
.nav-dropdown-toggle svg {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}
.nav-dropdown:hover .nav-dropdown-toggle svg {
  transform: rotate(180deg);
}
.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-fast);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}
.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown-menu a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.nav-dropdown-menu a:hover {
  color: var(--text-heading);
  background: rgba(255, 255, 255, 0.05);
}

/* Language toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  padding: 2px;
  margin-left: var(--space-md);
}
.lang-toggle a {
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.lang-toggle a.active {
  background: var(--accent);
  color: var(--bg-primary);
}
.lang-toggle a:hover:not(.active) {
  color: var(--text-heading);
}

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-base);
  border-radius: 2px;
}
.nav-hamburger.is-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-hamburger.is-active span:nth-child(2) {
  opacity: 0;
}
.nav-hamburger.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  display: flex;
  flex-direction: column;
  padding: var(--space-2xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}
.mobile-menu.is-active {
  opacity: 1;
  visibility: visible;
}
.mobile-menu a {
  color: var(--text-primary);
  font-size: var(--font-size-2xl);
  font-weight: 600;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-color);
  transition: color var(--transition-fast);
}
.mobile-menu a:hover {
  color: var(--accent);
}
.mobile-menu .mobile-submenu a {
  font-size: var(--font-size-lg);
  font-weight: 400;
  padding-left: var(--space-xl);
  color: var(--text-secondary);
}
.mobile-menu .lang-toggle-mobile {
  margin-top: var(--space-2xl);
  display: flex;
  gap: var(--space-md);
}
.mobile-menu .lang-toggle-mobile a {
  font-size: var(--font-size-base);
  border-bottom: none;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}
.mobile-menu .lang-toggle-mobile a.active {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}

/* --- Main Content --- */
main {
  padding-top: var(--nav-height);
}

/* --- Hero Section --- */
.hero {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: var(--space-4xl) 0;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(0, 212, 255, 0.04) 0%, transparent 50%);
  animation: gradientShift 15s ease infinite;
  background-size: 200% 200%;
}

.hero-content {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-4xl);
  z-index: 1;
}

.hero-text {
  flex: 1;
}

.hero-subtitle {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--accent);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.05em;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-xl);
  letter-spacing: -0.03em;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: var(--space-2xl);
  text-align: justify;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-image {
  flex-shrink: 0;
}
.hero-image img {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border-color);
  box-shadow: var(--accent-glow), 0 0 60px rgba(124, 58, 237, 0.15);
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: var(--space-3xl) 0;
  }
  .hero-content {
    flex-direction: column-reverse;
    text-align: center;
    gap: var(--space-2xl);
  }
  .hero-image img {
    width: 200px;
    height: 200px;
  }
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}
.btn-primary {
  background: var(--accent-gradient);
  color: var(--bg-primary);
}
.btn-primary:hover {
  box-shadow: var(--accent-glow);
  transform: translateY(-2px);
  color: var(--bg-primary);
}
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* --- Section --- */
.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  margin-bottom: var(--space-3xl);
}

.section-label {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--accent);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.05em;
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
}

.section-divider {
  width: 60px;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: 2px;
  margin-top: var(--space-md);
}

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--accent-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.card:hover {
  transform: translateY(-4px);
  border-color: transparent;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}
.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: rgba(0, 212, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  color: var(--accent);
}
.card-icon svg {
  width: 24px;
  height: 24px;
}

.card-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.card-text {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  text-align: justify;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--accent);
  transition: gap var(--transition-fast);
}
.card-link:hover {
  gap: 10px;
}
.card-link svg {
  width: 16px;
  height: 16px;
}

/* Project card with image */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}
.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}
.project-card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.project-card-image img,
.project-card-image video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.project-card:hover .project-card-image img,
.project-card:hover .project-card-image video {
  transform: scale(1.05);
}
.project-card-body {
  padding: var(--space-xl);
}
.project-card-body h3 {
  margin-bottom: var(--space-sm);
}
.project-card-body p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* --- Quote / Blockquote --- */
.blockquote {
  position: relative;
  padding: var(--space-2xl) var(--space-3xl);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  margin: var(--space-3xl) 0;
}
.blockquote::before {
  content: '\201C';
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 5rem;
  line-height: 1;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: Georgia, serif;
}
.blockquote p {
  font-size: var(--font-size-lg);
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
  text-align: justify;
}
.blockquote-author {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--accent);
}

/* --- Timeline (CV) --- */
.timeline {
  position: relative;
  padding-left: var(--space-3xl);
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-secondary), transparent);
}
.timeline-item {
  position: relative;
  padding-bottom: var(--space-2xl);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-3xl) - 5px);
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.4);
}
.timeline-date {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--accent);
  margin-bottom: var(--space-xs);
}
.timeline-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}
.timeline-company {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}
.timeline-description {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}
.timeline-description ul {
  padding-left: var(--space-lg);
  margin-top: var(--space-sm);
}
.timeline-description li {
  list-style: disc;
  margin-bottom: var(--space-xs);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* --- Skill Tags --- */
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.skill-tag {
  padding: 6px 16px;
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
  transition: all var(--transition-fast);
}
.skill-tag:hover {
  background: rgba(0, 212, 255, 0.2);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.2);
}
.skill-tag.purple {
  background: rgba(124, 58, 237, 0.1);
  color: var(--accent-secondary);
  border-color: rgba(124, 58, 237, 0.2);
}
.skill-tag.purple:hover {
  background: rgba(124, 58, 237, 0.2);
}

/* --- Tech badges --- */
.tech-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
}

/* --- Page Header (subpages) --- */
.page-header {
  padding: var(--space-4xl) 0 var(--space-2xl);
  position: relative;
}
.page-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(80%, var(--container-max));
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-color), transparent);
}
.page-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-md);
}
.page-header p {
  font-size: var(--font-size-lg);
  max-width: 680px;
  text-align: justify;
}

/* --- Content sections (subpages) --- */
.content-section {
  padding: var(--space-3xl) 0;
}
.content-section p {
  text-align: justify;
}
.content-section h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-lg);
}
.content-section h3 {
  font-size: var(--font-size-xl);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}
.content-section h4 {
  font-size: var(--font-size-lg);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}
.content-section ul {
  padding-left: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.content-section li {
  list-style: disc;
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  text-align: justify;
}
.content-section li strong {
  color: var(--text-heading);
}

/* --- Masonry Gallery (lifemoments) --- */
.masonry {
  columns: 3;
  column-gap: var(--space-md);
}
.masonry-item {
  break-inside: avoid;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-base);
}
.masonry-item:hover {
  transform: scale(1.02);
}
.masonry-item img {
  width: 100%;
  display: block;
  border-radius: var(--radius-lg);
}

@media (max-width: 1024px) {
  .masonry { columns: 2; }
}
@media (max-width: 768px) {
  .masonry { columns: 1; max-width: 500px; margin: 0 auto; }
}

/* --- Lightbox --- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  cursor: zoom-out;
}
.lightbox.is-active {
  opacity: 1;
  visibility: visible;
}
.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-lg);
}
.lightbox-close {
  position: absolute;
  top: var(--space-xl);
  right: var(--space-xl);
  background: none;
  border: none;
  color: #fff;
  font-size: var(--font-size-2xl);
  cursor: pointer;
  padding: var(--space-sm);
  line-height: 1;
}

/* --- GDE section --- */
.gde-input {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  font-size: var(--font-size-base);
  color: var(--text-primary);
  font-family: var(--font-mono);
  width: 100%;
  max-width: 300px;
  transition: border-color var(--transition-fast);
  outline: none;
}
.gde-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}
.gde-input::placeholder {
  color: var(--text-muted);
}

.gde-content {
  margin-top: var(--space-2xl);
}
.gde-content h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-lg);
}
.gde-content h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-md);
}
.gde-download {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-sm);
  transition: all var(--transition-fast);
}
.gde-download:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- License badges --- */
.license-badges {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
}
.license-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--accent);
}

/* --- Process steps --- */
.process-steps {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  flex-wrap: wrap;
  margin: var(--space-2xl) 0;
}
.process-step {
  flex: 1;
  min-width: 150px;
  text-align: center;
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
}
.process-step-number {
  font-family: var(--font-mono);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.process-step-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-heading);
  margin-top: var(--space-sm);
}
.process-arrow {
  color: var(--text-muted);
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .process-steps {
    flex-direction: column;
  }
  .process-arrow {
    transform: rotate(90deg);
  }
}

/* --- Footer --- */
.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}
.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}
.footer-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--text-heading);
}
.footer-text {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.8;
}
.footer-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}
.footer-link:hover {
  color: var(--accent);
}
.footer-link svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.footer-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}
.footer-gallery img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-md);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}
.footer-gallery img:hover {
  opacity: 1;
}
.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-size-xs);
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
}

/* --- Print (CV) --- */
@media print {
  body {
    background: #fff;
    color: #000;
  }
  .nav, .footer, .hero-bg, .mobile-menu {
    display: none;
  }
  main {
    padding-top: 0;
  }
  .card, .timeline-item, .section {
    break-inside: avoid;
  }
  .timeline::before {
    background: #000;
  }
  .timeline-item::before {
    background: #000;
    box-shadow: none;
  }
  h1, h2, h3, h4 {
    color: #000;
  }
  p, li, .text-secondary {
    color: #333;
  }
  a {
    color: #000;
    text-decoration: underline;
  }
}

/* --- Stats Section --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}
.stat-item {
  padding: var(--space-xl);
}
.stat-number {
  font-family: var(--font-mono);
  font-size: var(--font-size-4xl);
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}
.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}
.stat-sublabel {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Pipeline (Sensor to Decision) --- */
.pipeline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: var(--space-xl) 0;
}
.pipeline-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  flex: 1;
  max-width: 160px;
}
.pipeline-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  transition: all var(--transition-base);
}
.pipeline-icon svg {
  width: 24px;
  height: 24px;
}
.pipeline-step:hover .pipeline-icon {
  border-color: var(--accent);
  box-shadow: var(--accent-glow);
}
.pipeline-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-heading);
  text-align: center;
}
.pipeline-connector {
  flex: 0 0 auto;
  width: 40px;
  height: 2px;
  background: linear-gradient(to right, var(--accent), var(--accent-secondary));
  opacity: 0.4;
  position: relative;
  top: -12px;
}

@media (max-width: 768px) {
  .pipeline {
    flex-direction: column;
    gap: var(--space-sm);
  }
  .pipeline-connector {
    width: 2px;
    height: 24px;
    background: linear-gradient(to bottom, var(--accent), var(--accent-secondary));
    top: 0;
  }
}

/* --- Current Focus --- */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.focus-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
}
.focus-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.focus-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
}
.focus-card:hover::after {
  opacity: 1;
}
.focus-card-status {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: #22c55e;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}
.focus-card-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
  display: inline-block;
}
.focus-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}
.focus-card p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
  text-align: justify;
}

@media (max-width: 768px) {
  .focus-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Focus styles (accessibility) --- */
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}