/* ============================================
   CESTRUM SMART TECHNOLOGY - PREMIUM STATIC SITE
   Apple-inspired Design System
   ============================================ */

/* CSS Custom Properties */
:root {
  /* Primary Palette */
  --primary: #0071e3;
  --primary-dark: #0058b0;
  --primary-light: #4da3ff;
  --primary-subtle: #e8f4fd;

  /* Accent / Secondary */
  --accent: #8b5cf6;
  --accent-dark: #6d28d9;
  --accent-light: #c4b5fd;

  /* Neutrals */
  --black: #1d1d1f;
  --gray-900: #2d2d2f;
  --gray-800: #3a3a3c;
  --gray-700: #48484a;
  --gray-600: #636366;
  --gray-500: #86868b;
  --gray-400: #aeaeb2;
  --gray-300: #d1d1d6;
  --gray-200: #e5e5ea;
  --gray-100: #f2f2f7;
  --gray-50: #f9f9fb;
  --white: #ffffff;

  /* Semantic */
  --success: #30d158;
  --warning: #ff9f0a;
  --error: #ff453a;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
  --gradient-blue: linear-gradient(135deg, #0071e3 0%, #4da3ff 100%);
  --gradient-purple: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
  --gradient-mesh: radial-gradient(ellipse at 20% 50%, rgba(0,113,227,0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at 80% 20%, rgba(139,92,246,0.1) 0%, transparent 50%),
                   radial-gradient(ellipse at 50% 80%, rgba(0,113,227,0.08) 0%, transparent 50%);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.9), rgba(255,255,255,0.6));
  --gradient-dark-card: linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));

  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', 'Inter', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

  /* Spacing */
  --section-padding: 120px 0;
  --container-max: 1200px;
  --container-wide: 1400px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-xl: 0 24px 64px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-glow: 0 0 40px rgba(0,113,227,0.15);

  /* Borders */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-primary);
  font-size: 17px;
  line-height: 1.65;
  color: var(--black);
  background: var(--white);
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--black);
}

.heading-xl {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.heading-lg {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.heading-md {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.heading-sm {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 600;
}

.text-lg {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--gray-600);
}

.text-md {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--gray-600);
}

.text-sm {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--gray-500);
}

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

.text-center { text-align: center; }

/* ============================================
   LAYOUT
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding);
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 80px;
}

.section-header .overline {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}

.section-header h2 {
  margin-bottom: 20px;
}

.section-header p {
  font-size: 1.1875rem;
  color: var(--gray-600);
  line-height: 1.6;
}

.grid {
  display: grid;
  gap: 32px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: all var(--transition-smooth);
  letter-spacing: -0.01em;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(0,113,227,0.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(0,113,227,0.35);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--white);
  color: var(--black);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255,255,255,0.1);
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.4);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.9375rem;
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.0625rem;
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: all var(--transition-smooth);
  background: rgba(255,255,255,0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid rgba(0,0,0,0.08);
}

.navbar.scrolled {
  background: rgba(255,255,255,0.92);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.navbar-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--black);
  letter-spacing: -0.02em;
}

.navbar-logo img {
  height: 32px;
  width: auto;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.navbar-menu a {
  padding: 8px 18px;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--gray-700);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  letter-spacing: -0.01em;
}

.navbar-menu a:hover,
.navbar-menu a.active {
  color: var(--primary);
  background: var(--primary-subtle);
}

.navbar-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar-cta .btn {
  padding: 8px 22px;
  font-size: 0.875rem;
}

/* Mobile Menu */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.navbar-toggle span {
  width: 22px;
  height: 1.5px;
  background: var(--black);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

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

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

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

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(40px);
  z-index: 999;
  padding: 100px 40px 40px;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  font-size: 1.75rem;
  font-weight: 500;
  color: var(--black);
  padding: 12px 0;
  letter-spacing: -0.02em;
}

.mobile-menu a:hover {
  color: var(--primary);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 50%, rgba(0,113,227,0.12) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 30%, rgba(139,92,246,0.08) 0%, transparent 40%),
              radial-gradient(ellipse at 50% 80%, rgba(0,113,227,0.06) 0%, transparent 50%);
  animation: meshRotate 30s linear infinite;
}

@keyframes meshRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--white), transparent);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px 6px 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
  animation: fadeUp 0.8s ease-out;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  color: var(--white);
  margin-bottom: 24px;
  animation: fadeUp 0.8s ease-out 0.1s both;
}

.hero h1 .accent {
  background: linear-gradient(135deg, #4da3ff, #a78bfa, #4da3ff);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 4s linear infinite;
}

@keyframes gradientShift {
  to { background-position: 200% center; }
}

.hero-description {
  font-size: 1.3125rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
  max-width: 640px;
  margin: 0 auto 40px;
  animation: fadeUp 0.8s ease-out 0.2s both;
}

.hero .btn-group {
  justify-content: center;
  animation: fadeUp 0.8s ease-out 0.3s both;
}

.hero-metrics {
  display: flex;
  justify-content: center;
  gap: 64px;
  margin-top: 80px;
  animation: fadeUp 0.8s ease-out 0.5s both;
}

.hero-metric {
  text-align: center;
}

.hero-metric .number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 4px;
}

.hero-metric .label {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.02em;
}

/* Page Hero (for inner pages) */
.page-hero {
  padding: 160px 24px 80px;
  text-align: center;
  background: var(--gray-50);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-mesh);
  opacity: 0.5;
}

.page-hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
}

.page-hero .overline {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}

.page-hero h1 {
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 1.1875rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* ============================================
   FEATURE CARDS (Homepage)
   ============================================ */
.features-section {
  padding: 100px 0;
  background: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 40px 32px;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  transition: all var(--transition-smooth);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-blue);
  transform: scaleX(0);
  transition: transform var(--transition-smooth);
}

.feature-card:hover {
  background: var(--white);
  border-color: var(--gray-200);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-blue);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  font-size: 1.5rem;
  color: var(--white);
}

.feature-card h3 {
  font-size: 1.1875rem;
  margin-bottom: 10px;
  font-weight: 600;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* ============================================
   SERVICES
   ============================================ */
.services-section {
  padding: 120px 0;
  background: var(--gray-50);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-smooth);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
  border-color: transparent;
}

.service-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.service-card:hover .service-image {
  transform: scale(1.03);
}

.service-image-wrapper {
  overflow: hidden;
  position: relative;
}

.service-image-wrapper .service-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 14px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(10px);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.service-body {
  padding: 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.service-body h3 {
  font-size: 1.375rem;
  margin-bottom: 12px;
}

.service-body p {
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 1.65;
  margin-bottom: 20px;
}

.service-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.service-features .tag {
  padding: 5px 12px;
  background: var(--primary-subtle);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-full);
}

.service-techs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--gray-100);
}

.service-techs span {
  padding: 4px 10px;
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: 0.6875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 500;
  font-size: 0.9375rem;
  margin-top: 16px;
  transition: gap var(--transition-fast);
}

.service-link:hover {
  gap: 10px;
}

/* ============================================
   PRODUCTS
   ============================================ */
.products-section {
  padding: 120px 0;
  background: var(--white);
}

.products-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 60px;
}

.filter-btn {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  background: var(--gray-100);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(0,113,227,0.25);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-smooth);
  border: 1px solid var(--gray-200);
  position: relative;
}

.product-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
  border-color: transparent;
}

.product-image-wrapper {
  position: relative;
  overflow: hidden;
  height: 200px;
  background: var(--gray-100);
}

.product-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.product-card:hover .product-image {
  transform: scale(1.05);
}

.product-category {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 5px 12px;
  background: rgba(0,113,227,0.9);
  backdrop-filter: blur(10px);
  color: var(--white);
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.product-body {
  padding: 28px;
}

.product-body h3 {
  font-size: 1.1875rem;
  margin-bottom: 8px;
}

.product-body p {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.product-price .from {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--gray-500);
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.product-features span {
  padding: 4px 10px;
  background: var(--gray-50);
  color: var(--gray-600);
  font-size: 0.6875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
}

.product-actions {
  display: flex;
  gap: 8px;
}

.product-actions .btn {
  flex: 1;
  padding: 10px 16px;
  font-size: 0.8125rem;
}

/* Product Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(8px);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-xl);
  max-width: 700px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-xl);
  animation: modalIn 0.3s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: 50%;
  font-size: 1.25rem;
  color: var(--gray-600);
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close:hover {
  background: var(--gray-200);
  color: var(--black);
}

.modal-image {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-body {
  padding: 36px;
}

.modal-body h2 {
  font-size: 1.75rem;
  margin-bottom: 8px;
}

.modal-body .category-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-subtle);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.modal-body .description {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 24px;
}

.modal-features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 24px;
}

.modal-features-grid li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  color: var(--gray-700);
}

.modal-features-grid li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
  font-size: 0.875rem;
}

/* ============================================
   ABOUT
   ============================================ */
.about-mission {
  padding: 100px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 64px;
  align-items: start;
}

.about-card {
  padding: 48px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  transition: all var(--transition-smooth);
}

.about-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.about-card .icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  font-size: 1.5rem;
}

.about-card.mission .icon {
  background: var(--primary-subtle);
  color: var(--primary);
}

.about-card.vision .icon {
  background: #f3e8ff;
  color: var(--accent);
}

.about-card h3 {
  font-size: 1.375rem;
  margin-bottom: 16px;
}

.about-card p {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* Stats Bar */
.stats-section {
  padding: 80px 0;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-mesh);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
  position: relative;
  z-index: 2;
}

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

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.5);
}

/* Values */
.values-section {
  padding: 120px 0;
  background: var(--white);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.value-card {
  padding: 40px 28px;
  text-align: center;
  border-radius: var(--radius-lg);
  background: var(--gray-50);
  transition: all var(--transition-smooth);
  border: 1px solid transparent;
}

.value-card:hover {
  background: var(--white);
  border-color: var(--gray-200);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.value-card .icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  background: var(--gradient-blue);
  border-radius: var(--radius-md);
  font-size: 1.75rem;
  color: var(--white);
}

.value-card h4 {
  font-size: 1.125rem;
  margin-bottom: 10px;
}

.value-card p {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* Skills */
.skills-section {
  padding: 100px 0;
  background: var(--gray-50);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px 64px;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.skill-header span:first-child {
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--black);
}

.skill-header span:last-child {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--primary);
}

.skill-bar {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  background: var(--gradient-blue);
  border-radius: var(--radius-full);
  width: 0;
  transition: width 1.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Team */
.team-section {
  padding: 120px 0;
  background: var(--white);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.team-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius-lg);
  transition: all var(--transition-smooth);
}

.team-card:hover {
  background: var(--gray-50);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.team-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--gradient-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--white);
  font-weight: 600;
  margin: 0 auto 20px;
  letter-spacing: -0.02em;
}

.team-card h4 {
  font-size: 1.125rem;
  margin-bottom: 4px;
}

.team-card .role {
  font-size: 0.875rem;
  color: var(--primary);
  font-weight: 500;
}

/* ============================================
   CONTACT
   ============================================ */
.contact-section {
  padding: 120px 0;
  background: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
}

.contact-info h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.contact-info > p {
  font-size: 1.0625rem;
  color: var(--gray-600);
  margin-bottom: 40px;
  line-height: 1.7;
}

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

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-item .icon-box {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-subtle);
  color: var(--primary);
  border-radius: var(--radius-md);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-item p, .contact-item a {
  font-size: 0.9375rem;
  color: var(--gray-600);
}

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

.contact-social {
  display: flex;
  gap: 12px;
  margin-top: 40px;
}

.social-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: var(--radius-md);
  color: var(--gray-600);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

/* Contact Form */
.contact-form-wrapper {
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  padding: 48px;
  border: 1px solid var(--gray-200);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--black);
  margin-bottom: 8px;
}

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

.form-control {
  width: 100%;
  padding: 14px 18px;
  font-size: 1rem;
  font-family: inherit;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  background: var(--white);
  color: var(--black);
  transition: all var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.1);
}

.form-control::placeholder {
  color: var(--gray-400);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

select.form-control {
  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='%2386868b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px;
}

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

.form-success .check-icon {
  width: 64px;
  height: 64px;
  background: var(--success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2rem;
  color: var(--white);
}

.form-error {
  display: block;
  font-size: 0.8125rem;
  color: var(--error);
  margin-top: 4px;
  min-height: 1em;
}

.form-group input.error,
.form-group textarea.error,
.form-group select.error {
  border-color: var(--error);
}

.map-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  padding: 120px 0;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-mesh);
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}

.cta-content h2 {
  color: var(--white);
  margin-bottom: 20px;
}

.cta-content p {
  font-size: 1.1875rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 40px;
  line-height: 1.6;
}

.cta-content .btn-group {
  justify-content: center;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--black);
  color: rgba(255,255,255,0.6);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
}

.footer-brand .logo img {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.6);
  font-size: 1.125rem;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--primary);
  color: var(--white);
}

.footer-col h4 {
  color: var(--white);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.5);
  padding: 6px 0;
  transition: all var(--transition-fast);
}

.footer-col a:hover {
  color: var(--white);
  transform: translateX(4px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.35);
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 80px 0;
  }

  body { font-size: 16px; }

  .navbar-menu { display: none; }
  .navbar-cta .btn { display: none; }
  .navbar-toggle { display: flex; }

  .hero { min-height: auto; padding: 140px 24px 80px; }
  .hero-metrics { flex-direction: column; gap: 24px; }
  .hero-metrics .hero-metric { display: flex; align-items: center; gap: 16px; }
  .hero-metrics .hero-metric .number { font-size: 2rem; }

  .features-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; gap: 24px; }
  .team-grid { grid-template-columns: 1fr; }

  .section-header { margin-bottom: 48px; }
  .btn-group { flex-direction: column; align-items: center; }
  .btn { width: 100%; }

  .form-row { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

  .modal-features-grid { grid-template-columns: 1fr; }
  .modal { max-height: 90vh; margin: 16px; }
  .modal-body { padding: 24px; }

  .page-hero { padding: 120px 24px 60px; }

  .contact-form-wrapper { padding: 32px 24px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .hero-description { font-size: 1.0625rem; }
  .container { padding: 0 16px; }
  .products-filter { gap: 6px; }
  .filter-btn { padding: 8px 16px; font-size: 0.8125rem; }
}

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  font-size: 1.25rem;
  box-shadow: 0 4px 16px rgba(0,113,227,0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-smooth);
  z-index: 100;
  cursor: pointer;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* ============================================
   SKIP LINK (Accessibility)
   ============================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--white);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  z-index: 100000;
  font-weight: 600;
  font-size: 14px;
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.bg-light { background: var(--gray-50); }
.bg-white { background: var(--white); }
.bg-dark { background: var(--black); color: var(--white); }

/* Services Preview on Home */
.services-preview {
  padding: 120px 0;
  background: var(--gray-50);
}

.services-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-preview-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid var(--gray-200);
  transition: all var(--transition-smooth);
  text-align: center;
}

.service-preview-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
  border-color: transparent;
}

.service-preview-card .icon-box {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-subtle);
  border-radius: var(--radius-lg);
  font-size: 2rem;
  color: var(--primary);
  margin: 0 auto 24px;
}

.service-preview-card h3 {
  font-size: 1.1875rem;
  margin-bottom: 10px;
}

.service-preview-card p {
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* Why Choose Us */
.why-us-section {
  padding: 120px 0;
  background: var(--white);
}

.why-us-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.why-us-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.why-us-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.why-us-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.why-us-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.why-us-item .number {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-blue);
  border-radius: var(--radius-md);
  color: var(--white);
  font-weight: 700;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.why-us-item h4 {
  font-size: 1.0625rem;
  margin-bottom: 6px;
}

.why-us-item p {
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* Clients Marquee */
.clients-section {
  padding: 60px 0;
  background: var(--gray-50);
  overflow: hidden;
}

.marquee-track {
  display: flex;
  gap: 80px;
  animation: marquee 30s linear infinite;
}

.marquee-track span {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-300);
  white-space: nowrap;
  letter-spacing: -0.02em;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (max-width: 768px) {
  .services-preview-grid { grid-template-columns: 1fr; }
  .why-us-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* ============================================
   CHATBOT WIDGET
   ============================================ */
.chatbot-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,113,227,0.4);
  z-index: 1200;
  transition: all 0.3s ease;
}
.chatbot-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(0,113,227,0.5);
}
.chatbot-fab.hidden { display: none; }

.chatbot-window {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 380px;
  height: 540px;
  background: var(--white);
  border-radius: 16px;
  box-shadow: 0 12px 48px rgba(0,0,0,0.18);
  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 1300;
  animation: chatSlideUp 0.3s ease-out;
}
.chatbot-window.active { display: flex; }

@keyframes chatSlideUp {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.chatbot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--primary);
  color: #fff;
}
.chatbot-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}
.chatbot-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.chatbot-title {
  font-weight: 600;
  font-size: 0.9375rem;
}
.chatbot-status {
  font-size: 0.75rem;
  opacity: 0.85;
  display: flex;
  align-items: center;
  gap: 6px;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #30d158;
  display: inline-block;
}
.chatbot-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.125rem;
  cursor: pointer;
  padding: 4px;
  opacity: 0.8;
  transition: opacity 0.2s;
}
.chatbot-close:hover { opacity: 1; }

.chatbot-messages {
  flex: 1;
  padding: 20px 16px;
  overflow-y: auto;
  background: var(--gray-50);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chatbot-msg {
  display: flex;
}
.chatbot-msg.user {
  justify-content: flex-end;
}
.chatbot-msg.bot {
  justify-content: flex-start;
}

.msg-bubble {
  max-width: 82%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 0.875rem;
  line-height: 1.55;
  word-wrap: break-word;
}
.chatbot-msg.user .msg-bubble {
  background: var(--primary);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.chatbot-msg.bot .msg-bubble {
  background: var(--white);
  color: var(--gray-900);
  border-bottom-left-radius: 4px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

/* Typing indicator */
.typing-indicator .msg-bubble {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 12px 18px;
}
.typing-indicator span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-400);
  animation: typingDot 1.2s infinite;
}
.typing-indicator .dot-2 { animation-delay: 0.2s; }
.typing-indicator .dot-3 { animation-delay: 0.4s; }
@keyframes typingDot {
  0%, 60%, 100% { opacity: 0.3; transform: scale(0.8); }
  30% { opacity: 1; transform: scale(1); }
}

.chatbot-input-area {
  display: flex;
  padding: 12px 16px;
  border-top: 1px solid var(--gray-200);
  background: var(--white);
  gap: 8px;
}
.chatbot-input {
  flex: 1;
  border: 1px solid var(--gray-200);
  border-radius: 24px;
  padding: 10px 16px;
  font-size: 0.875rem;
  font-family: var(--font-primary);
  outline: none;
  transition: border-color 0.2s;
}
.chatbot-input:focus {
  border-color: var(--primary);
}
.chatbot-send {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  transition: background 0.2s;
  flex-shrink: 0;
}
.chatbot-send:hover { background: var(--primary-dark); }

@media (max-width: 480px) {
  .chatbot-window {
    width: calc(100vw - 16px);
    height: calc(100vh - 80px);
    bottom: 8px;
    right: 8px;
    border-radius: 12px;
  }
  .chatbot-fab {
    bottom: 16px;
    right: 16px;
    width: 52px;
    height: 52px;
    font-size: 1.3rem;
  }
}