:root {
  /* 3D Dental logó színek: kék, világoskék, fekete, 3D cián/piros */
  --color-primary-rgb: 51, 122, 183;
  --color-sky-rgb: 153, 204, 255;
  --color-bg: #f2f8fc;
  --color-surface: #ffffff;
  --color-primary: #337ab7;
  --color-primary-dark: #286090;
  --color-primary-light: #99ccff;
  --color-accent: #66cccc;
  --color-accent-red: #d65a62;
  --color-navy: #071d36;
  --color-text: #101828;
  --color-text-muted: #5a6d80;
  --color-border: #cfe4f5;
  --font-display: 'Outfit', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --shadow-sm: 0 1px 2px rgba(var(--color-primary-rgb), 0.08);
  --shadow-md: 0 4px 6px -1px rgba(var(--color-primary-rgb), 0.1), 0 2px 4px -2px rgba(var(--color-primary-rgb), 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(var(--color-primary-rgb), 0.12), 0 4px 6px -4px rgba(var(--color-primary-rgb), 0.06);
  --shadow-xl: 0 20px 25px -5px rgba(var(--color-primary-rgb), 0.14), 0 8px 10px -6px rgba(var(--color-primary-rgb), 0.06);
  --shadow-glow: 0 24px 80px rgba(var(--color-primary-rgb), 0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background:
    radial-gradient(circle at 12% 8%, rgba(var(--color-sky-rgb), 0.32), transparent 34%),
    radial-gradient(circle at 88% 14%, rgba(var(--color-primary-rgb), 0.12), transparent 32%),
    linear-gradient(180deg, #ffffff 0%, var(--color-bg) 42%, #ffffff 100%);
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  border-color: var(--color-border);
  box-shadow: 0 14px 40px rgba(var(--color-primary-rgb), 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-text);
}

.logo-img {
  display: block;
  height: 56px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--color-primary);
}

.nav-links > li > a:not(.nav-cta):not(.nav-fb) {
  position: relative;
}

.nav-links > li > a:not(.nav-cta):not(.nav-fb)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 999px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition);
}

.nav-links > li > a:not(.nav-cta):not(.nav-fb):hover::after {
  transform: scaleX(1);
}

.nav-fb {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  color: #1877F2;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.nav-fb:hover {
  color: #1877F2;
  background: rgba(24, 119, 242, 0.1);
  transform: translateY(-1px);
}

.nav-fb-icon {
  width: 22px;
  height: 22px;
  fill: currentColor;
  display: block;
}

.nav-lang {
  position: relative;
}

.nav-lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition);
}

.nav-lang-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-light);
  background: rgba(var(--color-sky-rgb), 0.25);
}

.nav-lang-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.nav-lang-code {
  line-height: 1;
  min-width: 22px;
}

.nav-lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 140px;
  padding: 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  z-index: 120;
}

.nav-lang-menu[hidden] {
  display: none;
}

.nav-lang-option {
  display: block;
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: left;
  color: var(--color-text);
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.nav-lang-option:hover {
  background: rgba(var(--color-sky-rgb), 0.3);
  color: var(--color-primary-dark);
}

.nav-lang-option.is-active {
  background: rgba(var(--color-primary-rgb), 0.12);
  color: var(--color-primary-dark);
  font-weight: 600;
}

.nav-cta {
  background: var(--color-primary);
  color: white !important;
  padding: 10px 20px;
  border-radius: 8px;
  transition: background var(--transition), transform var(--transition);
}

.nav-cta:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(var(--color-primary-rgb), 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.76);
  color: var(--color-text);
  border: 2px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-full {
  width: 100%;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(24px, 1fr) minmax(0, 560px) minmax(0, 520px) minmax(24px, 1fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(255, 255, 255, 0.92) 0%, rgba(242, 248, 252, 0.76) 52%, rgba(var(--color-sky-rgb), 0.28) 100%),
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(var(--color-sky-rgb), 0.55), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(var(--color-primary-rgb), 0.16), transparent),
    radial-gradient(ellipse 50% 30% at 0% 80%, rgba(var(--color-sky-rgb), 0.28), transparent);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  grid-column: 2;
  width: auto;
  max-width: none;
  padding: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--color-primary-dark);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 100px;
  margin-bottom: 24px;
  border: 1px solid rgba(var(--color-sky-rgb), 0.72);
  box-shadow: var(--shadow-sm);
}

.hero-badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 5px rgba(102, 204, 204, 0.18);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5.4rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.055em;
  margin-bottom: 24px;
  color: var(--color-navy);
}

.hero-highlight {
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: clamp(1.08rem, 1.5vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: 36px;
}

.hero-desc em {
  display: block;
  margin-top: 12px;
  font-style: normal;
  color: var(--color-primary-dark);
  font-weight: 500;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  min-width: 140px;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(var(--color-sky-rgb), 0.58);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px);
}

.stat-num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.hero-visual {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  grid-column: 3;
}

.hero-card {
  width: 100%;
  max-width: 520px;
  aspect-ratio: 1;
  position: relative;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(var(--color-sky-rgb), 0.16)),
    radial-gradient(circle at 35% 20%, rgba(255, 255, 255, 0.9), transparent 35%);
  border-radius: 34px;
  box-shadow: var(--shadow-glow);
  border: 3px solid var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: float 6s ease-in-out infinite;
}

.hero-card::before,
.hero-card::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  pointer-events: none;
}

.hero-card::before {
  inset: -22px;
  border: 1px solid rgba(var(--color-sky-rgb), 0.52);
}

.hero-card::after {
  width: 96px;
  height: 96px;
  right: -28px;
  top: 28px;
  background: linear-gradient(135deg, rgba(102, 204, 204, 0.48), rgba(var(--color-primary-rgb), 0.16));
  filter: blur(1px);
}

.hero-logo {
  width: 88%;
  height: auto;
  object-fit: contain;
  display: block;
  position: relative;
  z-index: 1;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Section common */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* Services */
.services {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--color-surface), #f8fcff);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.82);
  padding: 34px;
  border-radius: 22px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.service-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.35);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(var(--color-sky-rgb), 0.35);
  color: var(--color-primary);
  border-radius: 16px;
  margin-bottom: 20px;
  box-shadow: inset 0 0 0 1px rgba(var(--color-sky-rgb), 0.62);
}

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Technology */
.technology {
  padding: 100px 0;
  background:
    radial-gradient(circle at 12% 18%, rgba(var(--color-sky-rgb), 0.32), transparent 32%),
    linear-gradient(180deg, var(--color-bg) 0%, rgba(var(--color-sky-rgb), 0.2) 100%);
}

.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.tech-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.tech-content p {
  color: var(--color-text-muted);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

.tech-list {
  list-style: none;
}

.tech-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  font-weight: 500;
}

.tech-check {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: rgba(var(--color-sky-rgb), 0.4);
  color: var(--color-primary-dark);
  border-radius: 8px;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.tech-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tech-step {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 26px;
  background: var(--color-surface);
  border-radius: 20px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.tech-step:hover {
  border-color: rgba(var(--color-primary-rgb), 0.35);
  box-shadow: var(--shadow-md);
}

.step-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.72;
  flex-shrink: 0;
}

.tech-step strong {
  display: block;
  font-family: var(--font-display);
  margin-bottom: 4px;
}

.tech-step p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.cad-viewer-block {
  margin-top: 72px;
  padding-top: 72px;
  border-top: 1px solid var(--color-border);
}

.cad-viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 0 auto 16px;
  padding: 0 4px;
}

.cad-viewer-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
}

.cad-control-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.cad-control-hint svg {
  flex-shrink: 0;
  opacity: 0.7;
}

.cad-control-hint--touch {
  display: none;
}

.cad-viewer-fullscreen {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition);
}

.cad-viewer-fullscreen:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

.cad-viewer-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 32px;
}

.cad-viewer-header h3 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.cad-viewer-header p {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.6;
}

.cad-viewer-header em {
  display: block;
  margin-top: 8px;
  font-size: 0.95rem;
  font-style: normal;
  opacity: 0.85;
}

.cad-viewer-wrap {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  height: min(72vh, 640px);
  min-height: 480px;
  background: var(--color-primary);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 3px solid var(--color-primary-light);
  touch-action: none;
  cursor: grab;
}

.cad-viewer-wrap.is-interacting {
  cursor: grabbing;
}

.cad-viewer-wrap.is-loaded .cad-viewer-loading {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.cad-viewer-loading {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.cad-viewer-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--color-primary-light);
  border-radius: 50%;
  animation: cad-spin 0.8s linear infinite;
}

@keyframes cad-spin {
  to { transform: rotate(360deg); }
}

.cad-viewer-hint {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 24px;
  text-align: center;
  color: #fff;
  background: rgba(var(--color-primary-rgb), 0.75);
  pointer-events: none;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.cad-viewer-hint svg {
  opacity: 0.9;
  margin-bottom: 4px;
}

.cad-viewer-hint strong {
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.cad-viewer-hint span {
  font-size: 0.9rem;
  opacity: 0.85;
}

.cad-viewer-hint.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.cad-viewer-iframe {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  border: none;
  background: var(--color-primary);
  pointer-events: auto;
}

.cad-viewer-wrap:fullscreen,
.cad-viewer-wrap.is-fullscreen {
  max-width: none;
  width: 100%;
  height: 100%;
  min-height: 100%;
  border-radius: 0;
  border: none;
}

.cad-viewer-note {
  text-align: center;
  margin-top: 16px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.cad-viewer-note a {
  color: var(--color-primary-dark);
  font-weight: 500;
  text-decoration: none;
}

.cad-viewer-note a:hover {
  text-decoration: underline;
}

/* Gallery */
.gallery {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--color-surface), var(--color-bg));
}

.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
}

.gallery-filter {
  padding: 10px 20px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition);
}

.gallery-filter:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.gallery-filter.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.gallery-item:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-lg);
  border-color: rgba(var(--color-primary-rgb), 0.34);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.45s ease;
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(var(--color-primary-rgb), 0.8), transparent 50%);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 16px;
}

.gallery-item:hover .gallery-item-overlay {
  opacity: 1;
}

.gallery-item[hidden] {
  display: none;
}

.gallery-item-overlay span {
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
}

.section-header a {
  color: var(--color-primary);
  font-weight: 500;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(26, 60, 90, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.lightbox[hidden] {
  display: none;
}

.lightbox-content {
  max-width: min(90vw, 900px);
  max-height: 85vh;
  margin: 0;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 75vh;
  width: auto;
  height: auto;
  display: block;
  border-radius: var(--radius);
  margin: 0 auto;
}

.lightbox-content figcaption {
  text-align: center;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 16px;
  font-size: 0.95rem;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: rgba(255, 255, 255, 0.12);
  border: none;
  color: white;
  font-size: 2rem;
  line-height: 1;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lightbox-close {
  top: 20px;
  right: 20px;
}

.lightbox-prev {
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-next {
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
}

/* About */
.about {
  padding: 100px 0;
  background:
    radial-gradient(circle at 88% 12%, rgba(var(--color-sky-rgb), 0.28), transparent 28%),
    var(--color-bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.about-content p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.about-values {
  display: flex;
  gap: 24px;
  margin-top: 32px;
}

.value {
  flex: 1;
  padding: 20px;
  background: rgba(255, 255, 255, 0.72);
  border-radius: 18px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.value strong {
  display: block;
  font-family: var(--font-display);
  color: var(--color-primary);
  margin-bottom: 4px;
}

.value span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.about-photo {
  width: 100%;
  max-width: 420px;
  height: auto;
  border-radius: 28px;
  box-shadow: var(--shadow-xl);
  display: block;
  margin: 0 auto;
  background: white;
  padding: 24px;
  border: 3px solid var(--color-primary-light);
}

/* Contact */
.contact {
  padding: 100px 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(var(--color-sky-rgb), 0.2)),
    var(--color-bg);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-info h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.contact-info p {
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(var(--color-sky-rgb), 0.52);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
}

.contact-item svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
  padding: 10px;
  box-sizing: content-box;
  background: rgba(var(--color-sky-rgb), 0.32);
  border-radius: 14px;
}

.contact-item strong {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.contact-item a,
.contact-item span {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
}

.contact-item a:hover {
  color: var(--color-primary);
}

.contact-form {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.86)),
    var(--color-surface);
  padding: 42px;
  border-radius: 28px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-glow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.82);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-sky-rgb), 0.55);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  margin-top: 16px;
  font-size: 0.9rem;
  text-align: center;
}

.form-note.success {
  color: var(--color-primary-dark);
}

/* Footer */
.footer {
  padding: 56px 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(var(--color-sky-rgb), 0.25), transparent 34%),
    linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: rgba(255, 255, 255, 0.9);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.footer-brand .logo-img {
  filter: none;
}

.footer-brand p {
  margin-top: 8px;
  font-size: 0.9rem;
  opacity: 0.7;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: white;
}

.footer-copy {
  font-size: 0.85rem;
  opacity: 0.5;
}

.footer-fb {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

.footer-fb:hover {
  color: white;
}

.about-content a {
  color: var(--color-primary);
  font-weight: 500;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 100px;
    gap: 40px;
  }

  .hero-content,
  .hero-visual {
    grid-column: 1;
  }

  .hero-content {
    padding: 0 24px;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    margin-top: 40px;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tech-grid,
  .about-grid,
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-values {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: white;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-lang {
    width: 100%;
  }

  .nav-lang-btn {
    width: 100%;
    justify-content: center;
  }

  .nav-lang-menu {
    position: static;
    width: 100%;
    margin-top: 8px;
    box-shadow: none;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cad-viewer-block {
    margin-top: 48px;
    padding-top: 48px;
  }

  .cad-viewer-wrap {
    min-height: 360px;
    height: 55vh;
  }

  .cad-control-hint--touch {
    display: inline-flex;
  }

  .cad-viewer-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .cad-viewer-fullscreen {
    justify-content: center;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
    align-items: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

  .contact-form {
    padding: 24px;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .lightbox-prev {
    left: 8px;
  }

  .lightbox-next {
    right: 8px;
  }
}