/* ============================================
   VERTEX LAB — Design System
   Premium Dental Manufacturing Web Portal
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Montserrat:wght@600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Brand Colors */
  --color-bg: #121619;
  --color-bg-alt: #1a1f24;
  --color-bg-card: #1e2328;
  --color-bg-card-hover: #252b31;
  --color-cyan: #00C2D1;
  --color-cyan-dim: rgba(0, 194, 209, 0.15);
  --color-cyan-glow: rgba(0, 194, 209, 0.4);
  --color-gray: #8E959A;
  --color-gray-light: #b0b7bc;
  --color-white: #FFFFFF;
  --color-success: #2ecc71;
  --color-warning: #f39c12;
  --color-error: #e74c3c;

  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing Scale */
  --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;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 50%;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--color-white);
  background-color: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-white);
}

ul,
ol {
  list-style: none;
}

/* --- Typography --- */
h1,
h2,
h3,
h4,
h5 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
}

h4 {
  font-size: 1.1rem;
}

p {
  color: var(--color-gray-light);
  max-width: 70ch;
}

.text-cyan {
  color: var(--color-cyan);
}

.text-gray {
  color: var(--color-gray);
}

.text-mono {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

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

.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-cyan);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--color-cyan);
  display: inline-block;
}

.section-title {
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  color: var(--color-gray);
  font-size: 1.05rem;
  max-width: 600px;
  margin-bottom: var(--space-3xl);
}

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.navbar.scrolled {
  background: rgba(18, 22, 25, 0.85);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.nav-logo .logo-img {
  height: 40px !important;
  width: auto;
  display: block;
  object-fit: contain;
}

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

.nav-links form {
  margin: 0;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-gray);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-cyan);
  transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-white);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  background: var(--color-cyan);
  color: var(--color-bg) !important;
  padding: 10px 24px !important;
  border-radius: var(--radius-sm);
  font-weight: 700 !important;
  letter-spacing: 0.02em !important;
  text-transform: uppercase !important;
  font-size: 0.8rem !important;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast) !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--color-cyan-glow);
  background: #00dae8 !important;
  color: var(--color-bg) !important;
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 1001;
}

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

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

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

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

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(0, 194, 209, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(0, 194, 209, 0.04) 0%, transparent 60%);
  z-index: 1;
}

/* Dark overlay to improve hero text legibility */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(10, 14, 17, 0.82) 0%,
    rgba(10, 14, 17, 0.65) 40%,
    rgba(10, 14, 17, 0.40) 70%,
    rgba(10, 14, 17, 0.25) 100%
  );
  z-index: 1;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 194, 209, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 194, 209, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 60% 50%, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 60% 50%, black 20%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-cyan-dim);
  border: 1px solid rgba(0, 194, 209, 0.2);
  border-radius: var(--radius-xl);
  padding: 6px 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--color-cyan);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-xl);
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--color-cyan);
  border-radius: var(--radius-full);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 var(--color-cyan-glow);
  }

  50% {
    opacity: 0.6;
    box-shadow: 0 0 0 6px transparent;
  }
}

.hero h1 {
  margin-bottom: var(--space-lg);
}

.hero h1 .highlight {
  color: var(--color-cyan);
  position: relative;
}

.hero-description {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--color-white) !important;
  margin-bottom: var(--space-2xl);
  max-width: 560px;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  border: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-cyan);
  color: var(--color-bg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--color-cyan-glow);
  color: var(--color-bg);
  background: #00dae8;
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  transform: translateY(-2px);
}

.model-viewer-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 4px 10px;
  border: 1px solid rgba(0, 194, 209, 0.28);
  border-radius: 999px;
  background: rgba(0, 194, 209, 0.08);
  color: var(--color-cyan);
  cursor: pointer;
  font: inherit;
  font-size: 0.78rem;
  line-height: 1.2;
  text-decoration: none;
}

.model-viewer-trigger:hover {
  border-color: rgba(0, 194, 209, 0.52);
  background: rgba(0, 194, 209, 0.14);
}

.model-viewer-inline-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.model-viewer {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(5, 8, 10, 0.9);
  backdrop-filter: blur(8px);
  z-index: 1300;
}

.model-viewer.is-open {
  display: flex;
}

.model-viewer[hidden] {
  display: none !important;
}

.model-viewer-backdrop {
  position: absolute;
  inset: 0;
}

.model-viewer-dialog {
  position: relative;
  z-index: 1;
  width: min(1180px, 100%);
  max-height: calc(100vh - 48px);
  display: grid;
  gap: 12px;
}

.model-viewer-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--color-white);
}

.model-viewer-toolbar-group {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.model-viewer-title {
  font-size: 0.95rem;
  color: var(--color-white);
}

.model-viewer-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  cursor: pointer;
  font: inherit;
  text-decoration: none;
}

.model-viewer-button:hover {
  border-color: rgba(0, 194, 209, 0.35);
  color: var(--color-cyan);
}

.model-viewer-button.is-muted {
  color: var(--color-gray-light);
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
}

.model-viewer-stage {
  position: relative;
  height: min(68vh, 720px);
  min-height: 340px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #080b0d;
  overflow: hidden;
}

.model-viewer-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.model-viewer-message {
  position: absolute;
  left: 16px;
  bottom: 16px;
  max-width: min(520px, calc(100% - 32px));
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(5, 8, 10, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-gray-light);
  font-size: 0.86rem;
  pointer-events: none;
}

.model-viewer-message.is-error {
  color: #f3a6a0;
  border-color: rgba(231, 76, 60, 0.35);
  background: rgba(231, 76, 60, 0.14);
}

@media (max-width: 720px) {
  .model-viewer {
    padding: 14px;
  }

  .model-viewer-stage {
    min-height: 300px;
    height: 64vh;
  }
}

.btn-icon {
  width: 18px;
  height: 18px;
}

/* --- Stats Bar --- */
.stats-bar {
  display: flex;
  gap: var(--space-3xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.stat-item {
  text-align: left;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
}

.stat-value .unit {
  font-size: 1rem;
  color: var(--color-cyan);
  font-weight: 600;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-gray);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}

/* --- Materials Section --- */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.material-card {
  background: var(--color-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.material-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-cyan), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.material-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 194, 209, 0.2);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

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

.material-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-cyan-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  font-size: 1.5rem;
}

.material-card h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-white);
}

.material-card .material-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  display: block;
}

.material-card p {
  font-size: 0.92rem;
  line-height: 1.7;
}

.materials-quote {
  margin-top: var(--space-3xl);
  padding: var(--space-2xl);
  border-left: 3px solid var(--color-cyan);
  background: var(--color-cyan-dim);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.materials-quote p {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--color-gray-light);
}

.materials-quote cite {
  display: block;
  margin-top: var(--space-sm);
  color: var(--color-cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-style: normal;
}

/* --- Services Section --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: transform var(--transition-base), border-color var(--transition-base);
  position: relative;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 194, 209, 0.15);
}

.service-card-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 900;
  color: rgba(0, 194, 209, 0.08);
  position: absolute;
  top: var(--space-lg);
  right: var(--space-xl);
  line-height: 1;
}

.service-card h3 {
  margin-bottom: var(--space-md);
  color: var(--color-white);
}

.service-card p {
  font-size: 0.92rem;
  margin-bottom: var(--space-lg);
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.service-features li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-gray-light);
}

.service-features li::before {
  content: '→';
  color: var(--color-cyan);
  font-weight: 700;
  flex-shrink: 0;
}

/* --- Product Carousel Section --- */
.products-section .section-subtitle {
  margin-bottom: var(--space-2xl);
}

.product-carousel {
  --product-gap: var(--space-xl);
}

.product-carousel-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.product-carousel-title {
  flex: 0 1 320px;
}

.product-carousel-kicker {
  margin-bottom: var(--space-xs);
  color: var(--color-cyan);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-carousel-header h3 {
  color: var(--color-white);
}

.product-carousel-controls {
  display: flex;
  flex-shrink: 0;
  gap: var(--space-sm);
}

.product-carousel-btn {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  color: var(--color-white);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.product-carousel-btn span {
  font-size: 1.7rem;
  line-height: 1;
  transform: translateY(-1px);
}

.product-carousel-btn:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  transform: translateY(-2px);
}

.product-carousel-btn:disabled {
  cursor: default;
  border-color: rgba(255, 255, 255, 0.14);
  color: var(--color-white);
  opacity: 0.45;
  transform: none;
}

.product-carousel-btn:focus-visible,
.product-carousel-dot:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 3px;
}

.product-carousel-viewport {
  overflow: hidden;
  padding-top: 8px;
  margin-top: -8px;
}

.product-carousel-track {
  display: flex;
  gap: var(--product-gap);
  transition: transform var(--transition-slow);
  will-change: transform;
}

.product-card {
  flex: 0 0 calc((100% - (var(--product-gap) * 2)) / 3);
  min-width: 0;
  background: var(--color-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-cyan), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 194, 209, 0.2);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

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

.product-card img {
  width: 100%;
  height: 280px;
  object-fit: contain;
  padding: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
}

.product-card-body {
  padding: var(--space-lg);
}

.product-card-body span {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-cyan);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-card-body h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-white);
}

.product-card-body p {
  font-size: 0.92rem;
  line-height: 1.65;
}

.product-carousel-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.product-carousel-dot {
  width: 10px;
  height: 10px;
  border: 0;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.22);
  cursor: pointer;
  transition: width var(--transition-fast), background var(--transition-fast);
}

.product-carousel-dot.active {
  width: 28px;
  border-radius: 999px;
  background: var(--color-cyan);
}

.product-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-left: auto;
}

.product-actions .btn {
  padding: 12px 18px;
  font-size: 0.78rem;
}

/* --- Value Prop Section --- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.value-card {
  text-align: center;
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.04);
  background: linear-gradient(180deg, var(--color-bg-card) 0%, var(--color-bg) 100%);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.value-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 194, 209, 0.15);
}

.value-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  border-radius: var(--radius-full);
  background: var(--color-cyan-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}

.value-card h3 {
  margin-bottom: var(--space-md);
  color: var(--color-white);
}

.value-card p {
  margin: 0 auto;
  font-size: 0.92rem;
}

/* --- Quality Section --- */
.quality-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.quality-item {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.quality-number {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-cyan);
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border: 2px solid var(--color-cyan);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  margin-top: 2px;
}

.quality-item h4 {
  margin-bottom: var(--space-xs);
  color: var(--color-white);
}

.quality-item p {
  font-size: 0.9rem;
}

.quality-certifications {
  background: var(--color-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}

.cert-badge {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.cert-badge:last-child {
  border-bottom: none;
}

.cert-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-cyan-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.cert-badge h4 {
  font-size: 0.95rem;
  color: var(--color-white);
  margin-bottom: 2px;
}

.cert-badge p {
  font-size: 0.8rem;
  color: var(--color-gray);
}

/* --- Form Section --- */
.form-section {
  background: var(--color-bg-alt);
}

.form-container {
  max-width: 720px;
  margin: 0 auto;
}

/* Step Indicators */
.form-steps-indicator {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-3xl);
}

.step-dot {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.step-dot .dot {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-bg-card);
  border: 2px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-gray);
  transition: var(--transition-base);
}

.step-dot.active .dot {
  background: var(--color-cyan);
  border-color: var(--color-cyan);
  color: var(--color-bg);
  box-shadow: 0 0 20px var(--color-cyan-glow);
}

.step-dot.completed .dot {
  background: var(--color-cyan-dim);
  border-color: var(--color-cyan);
  color: var(--color-cyan);
}

.step-dot .line {
  width: 40px;
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
  transition: background var(--transition-base);
}

.step-dot.completed .line {
  background: var(--color-cyan);
}

.step-label {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  color: var(--color-gray);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

.step-dot.active .step-label {
  color: var(--color-cyan);
}

/* Form Steps */
.form-step {
  display: none;
  animation: fadeSlideIn 0.4s ease;
}

.form-step.active {
  display: block;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.form-step-title {
  font-size: 1.2rem;
  margin-bottom: var(--space-xl);
  color: var(--color-white);
}

/* Form Elements */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-gray-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
}

.form-group label .required {
  color: var(--color-cyan);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-cyan);
  box-shadow: 0 0 0 3px var(--color-cyan-dim);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(142, 149, 154, 0.5);
}

.form-input[type="date"] {
  color-scheme: dark;
  cursor: pointer;
}

.form-input[type="date"]::-webkit-calendar-picker-indicator {
  filter: none;
  cursor: pointer;
  opacity: 0.85;
  transition: opacity var(--transition-fast);
}

.form-input[type="date"]::-webkit-calendar-picker-indicator:hover {
  opacity: 1;
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238E959A' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.quote-estimate {
  margin: var(--space-lg) 0;
  padding: 14px 16px;
  background: var(--color-bg);
  border: 1px solid rgba(0, 194, 209, 0.24);
  border-radius: var(--radius-sm);
}

.quote-estimate-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.quote-estimate-header span {
  color: var(--color-gray-light);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.quote-estimate-header strong {
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1.35rem;
}

.quote-estimate-meta {
  margin-top: 6px;
  color: var(--color-gray);
  font-size: 0.82rem;
}

.quote-estimate-rows {
  display: grid;
  gap: 6px;
  margin-top: 12px;
}

.quote-estimate-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-md);
  color: var(--color-gray-light);
  font-size: 0.84rem;
}

.quote-estimate-row strong {
  color: var(--color-white);
  font-weight: 600;
}

/* Radio & Checkbox Buttons */
.radio-group,
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.radio-option,
.checkbox-option {
  position: relative;
}

.radio-option input,
.checkbox-option input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.radio-option label,
.checkbox-option label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 20px;
  background: var(--color-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-gray-light);
  transition: var(--transition-fast);
  text-transform: none;
  letter-spacing: normal;
}

.radio-option input:checked+label,
.checkbox-option input:checked+label {
  background: var(--color-cyan-dim);
  border-color: var(--color-cyan);
  color: var(--color-cyan);
}

.radio-option label:hover,
.checkbox-option label:hover {
  border-color: rgba(0, 194, 209, 0.3);
}

.product-description {
  margin-top: 12px;
  padding: 12px 14px;
  background: rgba(0, 194, 209, 0.08);
  border: 1px solid rgba(0, 194, 209, 0.18);
  border-radius: var(--radius-md);
  color: rgba(204, 248, 251, 0.92);
  font-size: 0.88rem;
  line-height: 1.6;
}

.product-description-layout {
  display: grid;
  gap: 18px;
  align-items: start;
}

.product-description-layout.has-image {
  grid-template-columns: minmax(0, 1.45fr) minmax(180px, 0.75fr);
}

.product-description-copy {
  min-width: 0;
}

.product-description-media {
  display: flex;
  justify-content: flex-end;
}

.product-description-image {
  width: 100%;
  max-width: 240px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.24);
  background: rgba(255, 255, 255, 0.04);
}

.product-description p,
.product-description ul,
.product-description ol {
  margin: 0;
}

.product-description p + p,
.product-description p + ul,
.product-description p + ol,
.product-description ul + p,
.product-description ul + ul,
.product-description ul + ol,
.product-description ol + p,
.product-description ol + ul,
.product-description ol + ol {
  margin-top: 10px;
}

.product-description ul,
.product-description ol {
  padding-left: 18px;
}

.product-description li + li {
  margin-top: 4px;
}

.product-description strong {
  color: var(--color-white);
  font-weight: 700;
}

.product-description em {
  font-style: italic;
}

@media (max-width: 720px) {
  .product-description-layout.has-image {
    grid-template-columns: 1fr;
  }

  .product-description-media {
    justify-content: flex-start;
  }

  .product-description-image {
    max-width: 100%;
  }
}

#materials-container {
  display: grid;
  gap: var(--space-sm);
}

.material-option {
  width: 100%;
}

.material-option-label {
  display: flex;
  width: 100%;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  align-items: flex-start;
}

.material-option-copy {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

.material-option-name {
  color: var(--color-white);
  font-size: 0.96rem;
  font-weight: 700;
  line-height: 1.2;
}

.material-option-description {
  color: var(--color-gray-light);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.6;
}

.material-option input:checked + .material-option-label .material-option-name {
  color: var(--color-cyan);
}

.material-option input:checked + .material-option-label .material-option-description {
  color: rgba(204, 248, 251, 0.92);
}

/* File Upload */
.file-dropzone {
  border: 2px dashed rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-3xl);
  text-align: center;
  cursor: pointer;
  transition: var(--transition-base);
  background: var(--color-bg);
}

.file-dropzone:hover,
.file-dropzone.dragover {
  border-color: var(--color-cyan);
  background: var(--color-cyan-dim);
}

.file-dropzone-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.file-dropzone p {
  text-align: center;
  margin: 0 auto;
}

.file-dropzone .browse-link {
  color: var(--color-cyan);
  text-decoration: underline;
  cursor: pointer;
}

.file-formats {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-gray);
  margin-top: var(--space-sm);
  text-align: center;
}

.uploaded-files {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.uploaded-file {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-card);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.uploaded-file .file-name {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-cyan);
}

.uploaded-file .file-remove {
  cursor: pointer;
  color: var(--color-gray);
  transition: color var(--transition-fast);
  background: none;
  border: none;
  font-size: 1.1rem;
}

.uploaded-file .file-remove:hover {
  color: var(--color-error);
}

/* Dental Support Selector */
.dental-support-selector {
  display: grid;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
}

.dental-support-toolbar {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  gap: var(--space-md);
}

.dental-support-helper {
  max-width: 56ch;
  font-size: 0.85rem;
  color: var(--color-gray-light);
}

.dental-support-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.75fr);
  gap: var(--space-lg);
  align-items: stretch;
}

.dental-support-visual,
.dental-support-sidebar {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: calc(var(--radius-lg) + 4px);
}

.dental-support-visual {
  position: relative;
  min-height: 480px;
  padding: var(--space-xl);
  overflow: hidden;
}

.dental-support-orientation {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.28);
}

.dental-support-viewport {
  position: relative;
  height: 400px;
  max-width: 560px;
  margin: 12px auto 0;
}

.dental-support-viewport-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 0 var(--space-xl);
  text-align: center;
  color: var(--color-gray);
  font-size: 0.9rem;
}

.dental-support-arch-label {
  width: fit-content;
  margin: 0 auto;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--color-bg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.dental-tooth {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-gray-light);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.18);
  cursor: pointer;
  user-select: none;
  transition: transform var(--transition-fast), filter var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.dental-tooth:hover {
  filter: brightness(1.08);
}

.dental-tooth span {
  display: block;
}

.dental-tooth--molar {
  border-radius: 10px;
}

.dental-tooth--premolar {
  border-radius: 14px;
}

.dental-tooth--anterior {
  border-radius: 50% 50% 4px 4px / 100% 100% 8px 8px;
}

.dental-tooth--permanent-size {
  width: 36px;
  height: 42px;
}

.dental-tooth--permanent-size.dental-tooth--anterior {
  width: 29px;
  height: 44px;
}

.dental-tooth--temporary-size {
  width: 28px;
  height: 30px;
}

.dental-tooth--temporary-size.dental-tooth--anterior {
  width: 24px;
  height: 32px;
}

.dental-tooth--permanent.is-selected {
  background: rgba(0, 194, 209, 0.2);
  border-color: var(--color-cyan);
  color: var(--color-white);
  box-shadow: 0 12px 24px rgba(0, 194, 209, 0.2);
}

.dental-tooth--temporary.is-selected {
  background: rgba(46, 204, 113, 0.22);
  border-color: var(--color-success);
  color: var(--color-white);
  box-shadow: 0 12px 24px rgba(46, 204, 113, 0.18);
}

.dental-support-sidebar {
  display: flex;
  flex-direction: column;
  min-height: 480px;
  padding: var(--space-lg);
}

.dental-support-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.dental-support-sidebar-header h4 {
  font-size: 0.96rem;
  color: var(--color-white);
}

.dental-support-sidebar-header span {
  min-width: 30px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--color-cyan);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  text-align: center;
}

.dental-support-selection-list {
  display: grid;
  gap: 8px;
  flex: 1;
  max-height: 320px;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 2px;
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 194, 209, 0.42) rgba(255, 255, 255, 0.05);
}

.dental-support-selection-list::-webkit-scrollbar {
  width: 8px;
}

.dental-support-selection-list::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
}

.dental-support-selection-list::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(0, 194, 209, 0.7), rgba(0, 194, 209, 0.35));
  border-radius: 999px;
  border: 1px solid rgba(18, 22, 25, 0.35);
}

.dental-support-selection-list::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, rgba(0, 194, 209, 0.88), rgba(0, 194, 209, 0.48));
}

.dental-support-empty {
  margin: auto 0;
  text-align: center;
  color: var(--color-gray);
  font-size: 0.82rem;
}

.dental-support-selection-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  min-width: 0;
  position: relative;
}

.dental-support-selection-meta {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-width: 0;
  flex: 1;
  padding-right: 26px;
}

.dental-support-selection-meta div {
  display: grid;
  gap: 1px;
  min-width: 0;
}

.dental-support-selection-meta strong {
  color: var(--color-white);
  font-size: 0.8rem;
  line-height: 1.25;
}

.dental-support-selection-meta span {
  color: var(--color-gray);
  font-size: 0.7rem;
  line-height: 1.25;
}

.dental-support-selection-code {
  min-width: 34px;
  height: 34px;
  padding: 0 8px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  flex-shrink: 0;
}

.dental-support-selection-code--permanent {
  color: var(--color-cyan);
  background: rgba(0, 194, 209, 0.12);
  border: 1px solid rgba(0, 194, 209, 0.18);
}

.dental-support-selection-code--temporary {
  color: var(--color-success);
  background: rgba(46, 204, 113, 0.12);
  border: 1px solid rgba(46, 204, 113, 0.18);
}

.dental-support-remove,
.dental-support-clear {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: transparent;
  color: var(--color-gray-light);
  cursor: pointer;
  transition: var(--transition-fast);
}

.dental-support-remove {
  width: 20px;
  height: 20px;
  padding: 0;
  border-radius: 999px;
  font-size: 0.92rem;
  line-height: 1;
  white-space: nowrap;
  flex-shrink: 0;
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.dental-support-remove:hover,
.dental-support-clear:hover {
  border-color: rgba(0, 194, 209, 0.28);
  color: var(--color-white);
}

.dental-support-actions {
  padding-top: var(--space-md);
  margin-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.dental-support-clear {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dental-support-hidden-inputs {
  display: none;
}

/* Form Navigation */
.form-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* Success Screen */
.form-success {
  display: none;
  text-align: center;
  padding: var(--space-3xl);
  animation: fadeSlideIn 0.5s ease;
}

.form-success.active {
  display: block;
}

.success-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background: rgba(46, 204, 113, 0.15);
  border: 2px solid var(--color-success);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-xl);
  font-size: 2rem;
}

.form-success h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.form-success .case-id {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--color-cyan);
  background: var(--color-cyan-dim);
  display: inline-block;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
}

.form-success p {
  margin: 0 auto;
  text-align: center;
}

/* --- Contact / Footer --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-xl);
}

.contact-card {
  background: var(--color-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.contact-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 194, 209, 0.15);
}

.contact-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.contact-card h4 {
  margin-bottom: var(--space-sm);
  color: var(--color-white);
}

.contact-card p {
  font-size: 0.88rem;
  text-align: center;
  margin: 0 auto;
}

.contact-card a {
  word-break: break-all;
}

.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: var(--space-xl) 0;
  text-align: center;
}

.footer p {
  font-size: 0.8rem;
  color: var(--color-gray);
  text-align: center;
  margin: 0 auto;
}

.footer .footer-location {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: rgba(142, 149, 154, 0.5);
  margin-top: var(--space-xs);
}

/* --- WhatsApp FAB --- */
.whatsapp-fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  color: white;
  font-size: 1.8rem;
}

.whatsapp-fab:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
  color: white;
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Section Divider --- */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 194, 209, 0.15), transparent);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {

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

  .product-card {
    flex-basis: calc((100% - var(--product-gap)) / 2);
  }

  .quality-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  /* Remove backdrop-filter on mobile navbar — it creates a containing block
     that breaks position:fixed on the child .nav-links menu overlay */
  .navbar.scrolled {
    background: var(--color-bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .nav-inner {
    padding: 0 var(--space-lg);
  }

  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    background: var(--color-bg-alt);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-2xl);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 1000;
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.2rem;
  }

  .nav-links form {
    width: 100%;
    display: flex;
    justify-content: center;
  }

  .nav-links .btn {
    width: min(280px, 100%);
    justify-content: center;
  }

  .nav-hamburger {
    display: flex;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .nav-links {
    background-color: var(--color-bg-alt) !important;
  }

  .container {
    padding: 0 var(--space-lg);
  }

  .section {
    padding: var(--space-3xl) 0;
  }

  /* Grids */
  .materials-grid,
  .services-grid,
  .value-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .product-carousel-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .product-carousel-title {
    width: 100%;
  }

  .product-actions {
    justify-content: stretch;
    margin-left: 0;
    width: 100%;
  }

  .product-carousel-controls {
    align-self: flex-end;
  }

  .product-card {
    flex-basis: 100%;
  }

  .product-card img {
    height: 250px;
  }

  .product-actions .btn {
    width: 100%;
    justify-content: center;
  }

  /* Stats */
  .stats-bar {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .quality-item,
  .cert-badge,
  .uploaded-file {
    flex-wrap: wrap;
  }

  .radio-option,
  .checkbox-option {
    width: 100%;
  }

  .radio-option label,
  .checkbox-option label {
    width: 100%;
  }

  /* Hero */
  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-height) + var(--space-3xl));
    padding-bottom: var(--space-3xl);
  }

  /* Stronger overlay on mobile for improved readability */
  .hero-bg::after {
    background: linear-gradient(
      180deg,
      rgba(10, 14, 17, 0.85) 0%,
      rgba(10, 14, 17, 0.70) 50%,
      rgba(10, 14, 17, 0.55) 100%
    );
  }

  .hero-content,
  .hero h1,
  .hero-description,
  .hero .stat-value,
  .hero .stat-label {
    color: var(--color-white);
  }


  .hero-description {
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.35);
    color: var(--color-white)!important;
  }
  
  .hero-description p{
    color: var(--color-white)!important;
  }

  /* Form steps */
  .step-dot .line {
    width: 20px;
  }

  .step-label {
    display: none;
  }

  /* Radio / Checkbox */
  .radio-group,
  .checkbox-group {
    flex-direction: column;
  }

  .dental-support-toolbar,
  .dental-support-layout {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .dental-support-visual,
  .dental-support-sidebar {
    min-height: auto;
  }

  .dental-support-visual {
    padding: var(--space-lg);
  }

  .dental-support-viewport {
    height: 340px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.8rem;
  }

  .nav-logo .logo-img {
    height: 34px !important;
  }

  .hero-ctas {
    flex-direction: column;
  }

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

  .form-nav {
    flex-direction: column-reverse;
    gap: var(--space-md);
  }

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

  .nav-links {
    gap: var(--space-xl);
    padding: calc(var(--nav-height) + var(--space-xl)) var(--space-lg) var(--space-2xl);
    justify-content: flex-start;
  }

  .hero-badge,
  .section-label {
    letter-spacing: 0.12em;
  }

  .material-card,
  .service-card,
  .value-card,
  .contact-card,
  .quality-certifications {
    padding: var(--space-lg);
  }

  .materials-quote,
  .file-dropzone,
  .form-success {
    padding: var(--space-lg);
  }

  .uploaded-file {
    gap: var(--space-xs);
  }
}