/* ============================================
   TNM International Co., Ltd. — Design System
   ============================================ */

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

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Brand Colors */
  --primary: #0D9488;
  --primary-dark: #0F766E;
  --primary-darker: #115E59;
  --primary-light: #5EEAD4;
  --primary-lightest: #CCFBF1;
  --primary-bg: #F0FDFA;
  --accent: #14B8A6;
  --accent-glow: rgba(20, 184, 166, 0.15);

  /* Neutrals */
  --neutral-900: #0F172A;
  --neutral-800: #1E293B;
  --neutral-700: #334155;
  --neutral-600: #475569;
  --neutral-500: #64748B;
  --neutral-400: #94A3B8;
  --neutral-300: #CBD5E1;
  --neutral-200: #E2E8F0;
  --neutral-100: #F1F5F9;
  --neutral-50: #F8FAFC;
  --white: #FFFFFF;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

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

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

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 30px rgba(13, 148, 136, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 500ms 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;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  color: var(--neutral-700);
  line-height: 1.7;
  background: var(--white);
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--neutral-800);
  line-height: 1.25;
  font-weight: 700;
}

/* ---------- Utility Classes ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-20) 0;
}

.section-alt {
  padding: var(--space-20) 0;
  background: var(--neutral-50);
}

.section-primary {
  padding: var(--space-20) 0;
  background: var(--primary-bg);
}

.section-title {
  font-size: var(--font-size-4xl);
  text-align: center;
  margin-bottom: var(--space-4);
  color: var(--neutral-800);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  text-align: center;
  color: var(--neutral-500);
  max-width: 640px;
  margin: 0 auto var(--space-12);
}

.badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  background: var(--primary-lightest);
  border-radius: var(--radius-full);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  line-height: 1.5;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 4px 20px rgba(13, 148, 136, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

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

.btn-white {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}

.btn-white:hover {
  background: var(--primary-lightest);
  border-color: var(--primary-lightest);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
}

.btn svg {
  width: 18px;
  height: 18px;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--neutral-200);
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
}

.nav-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 800;
  font-size: var(--font-size-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-links a {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--neutral-600);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

.nav-cta {
  margin-left: var(--space-4);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--neutral-700);
  border-radius: 1px;
  transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translateY(5px) translateX(5px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(-5px) translateX(5px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  background: linear-gradient(135deg, var(--neutral-900) 0%, var(--primary-darker) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../assets/images/hero-bg.png') center/cover no-repeat;
  opacity: 0.2;
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(13, 148, 136, 0.6) 100%);
  z-index: 2;
}

.hero .container {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.hero-content {
  color: var(--white);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--primary-light);
  margin-bottom: var(--space-6);
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.hero h1 {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: var(--space-6);
}

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

.hero p {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  max-width: 520px;
  margin-bottom: var(--space-8);
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image img {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-10);
}

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

.hero-stat .number {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}

.hero-stat .label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  margin-top: var(--space-1);
}

/* ============================================
   PAGE HERO (inner pages)
   ============================================ */
.page-hero {
  padding: calc(var(--nav-height) + var(--space-16)) 0 var(--space-16);
  background: linear-gradient(135deg, var(--neutral-900) 0%, var(--primary-darker) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: var(--accent-glow);
  top: -200px;
  right: -100px;
  filter: blur(100px);
}

.page-hero h1 {
  font-size: var(--font-size-5xl);
  color: var(--white);
  margin-bottom: var(--space-4);
}

.page-hero p {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.7);
  max-width: 600px;
  margin: 0 auto;
}

.page-hero .breadcrumb {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.5);
}

.page-hero .breadcrumb a {
  color: var(--primary-light);
}

.page-hero .breadcrumb a:hover {
  text-decoration: underline;
}

/* ============================================
   STRENGTHS / FEATURES GRID
   ============================================ */
.strengths-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.strength-card {
  background: var(--white);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.strength-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.strength-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-lightest);
}

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

.strength-icon {
  width: 64px;
  height: 64px;
  background: var(--primary-bg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
  transition: all var(--transition-base);
}

.strength-card:hover .strength-icon {
  background: var(--primary);
  transform: scale(1.05);
}

.strength-icon svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
  transition: color var(--transition-base);
}

.strength-card:hover .strength-icon svg {
  color: var(--white);
}

.strength-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
}

.strength-card p {
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
  line-height: 1.7;
}

/* ============================================
   PRODUCT CARDS (Home)
   ============================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

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

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

.product-card-image {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--neutral-100);
}

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

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

.product-card-body {
  padding: var(--space-6);
}

.product-card-body h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
}

.product-card-body p {
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
  margin-bottom: var(--space-5);
  line-height: 1.7;
}

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

/* ============================================
   PRODUCTS PAGE (detailed)
   ============================================ */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  padding: var(--space-16) 0;
  border-bottom: 1px solid var(--neutral-200);
}

.product-detail:last-child {
  border-bottom: none;
}

.product-detail.reverse {
  direction: rtl;
}

.product-detail.reverse > * {
  direction: ltr;
}

.product-detail-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--neutral-100);
}

.product-detail-image img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
}

.product-detail-content h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-4);
}

.product-detail-content > p {
  font-size: var(--font-size-base);
  color: var(--neutral-600);
  margin-bottom: var(--space-6);
  line-height: 1.8;
}

.product-detail-content h4 {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  margin-bottom: var(--space-3);
  font-weight: 600;
}

.product-detail-content ul {
  margin-bottom: var(--space-6);
}

.product-detail-content li {
  padding: var(--space-2) 0;
  padding-left: var(--space-6);
  position: relative;
  font-size: var(--font-size-sm);
  color: var(--neutral-600);
}

.product-detail-content li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

.product-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.spec-item {
  background: var(--primary-bg);
  padding: var(--space-4);
  border-radius: var(--radius-md);
}

.spec-item .spec-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  font-weight: 600;
}

.spec-item .spec-value {
  font-size: var(--font-size-sm);
  color: var(--neutral-700);
  font-weight: 500;
  margin-top: var(--space-1);
}

/* ============================================
   CTA BANNER
   ============================================ */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--primary-darker) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-16) var(--space-12);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  top: -100px;
  right: -50px;
}

.cta-banner::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  bottom: -80px;
  left: -50px;
}

.cta-banner h2 {
  font-size: var(--font-size-3xl);
  color: var(--white);
  margin-bottom: var(--space-4);
  position: relative;
}

.cta-banner p {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  position: relative;
}

.cta-banner .btn {
  position: relative;
}

/* ============================================
   CERTIFICATIONS
   ============================================ */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.cert-card {
  background: var(--white);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-lightest);
}

.cert-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary-bg), var(--primary-lightest));
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.cert-icon svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

.cert-card h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-2);
}

.cert-card p {
  font-size: var(--font-size-xs);
  color: var(--neutral-500);
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.about-intro-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-intro-image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.about-intro-content h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-4);
}

.about-intro-content p {
  color: var(--neutral-600);
  margin-bottom: var(--space-4);
  line-height: 1.8;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.value-card {
  text-align: center;
  padding: var(--space-8) var(--space-6);
  background: var(--white);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-lightest);
}

.value-card .value-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-bg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.value-card .value-icon svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

.value-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

.value-card p {
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
}

.timeline {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--neutral-200);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-8);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--primary-lightest);
}

.timeline-item h4 {
  font-size: var(--font-size-base);
  color: var(--primary);
  margin-bottom: var(--space-1);
}

.timeline-item p {
  font-size: var(--font-size-sm);
  color: var(--neutral-600);
}

/* ============================================
   BLOG
   ============================================ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.blog-card {
  background: var(--white);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-lightest);
}

.blog-card-image {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--neutral-100);
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.blog-card-body {
  padding: var(--space-6);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.blog-card-meta .date {
  font-size: var(--font-size-xs);
  color: var(--neutral-400);
}

.blog-card-meta .category {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-bg);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.blog-card-body h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
  line-height: 1.4;
}

.blog-card-body h3 a:hover {
  color: var(--primary);
}

.blog-card-body p {
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

.blog-card-body .read-more {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--primary);
  transition: gap var(--transition-fast);
}

.blog-card-body .read-more:hover {
  gap: var(--space-3);
}

.blog-card-body .read-more svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-12);
}

.contact-form-card {
  background: var(--white);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  box-shadow: var(--shadow-sm);
}

.contact-form-card h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
}

.contact-form-card > p {
  color: var(--neutral-500);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-8);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--neutral-700);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  border: 1.5px solid var(--neutral-200);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  background: var(--white);
  color: var(--neutral-800);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--neutral-400);
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-info-card {
  background: var(--white);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

.contact-info-card:hover {
  border-color: var(--primary-lightest);
  box-shadow: var(--shadow-sm);
}

.contact-info-card .info-icon {
  width: 44px;
  height: 44px;
  background: var(--primary-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.contact-info-card .info-icon svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
}

.contact-info-card h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-2);
}

.contact-info-card p,
.contact-info-card a {
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
  line-height: 1.7;
}

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

.map-placeholder {
  width: 100%;
  aspect-ratio: 16/10;
  background: var(--neutral-100);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--neutral-400);
  font-size: var(--font-size-sm);
  gap: var(--space-2);
  overflow: hidden;
}

.map-placeholder svg {
  width: 32px;
  height: 32px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--neutral-900);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-16) 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  margin-top: var(--space-4);
  max-width: 300px;
}

.footer-brand .nav-logo {
  color: var(--white);
}

.footer-heading {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-5);
}

.footer-links li {
  margin-bottom: var(--space-3);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-light);
  padding-left: var(--space-2);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  font-size: var(--font-size-sm);
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  color: var(--primary-light);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.footer-social a {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  transition: all var(--transition-fast);
}

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

.footer-social svg {
  width: 18px;
  height: 18px;
}

.footer-bottom {
  padding: var(--space-6) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================
   BROCHURE SECTION
   ============================================ */
.brochure-section {
  background: var(--primary-bg);
  border: 1px solid var(--primary-lightest);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  margin-top: var(--space-16);
}

.brochure-content h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
}

.brochure-content p {
  color: var(--neutral-500);
  font-size: var(--font-size-sm);
}

/* ============================================
   INQUIRY MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition-spring);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
}

.modal-header h2 {
  font-size: var(--font-size-2xl);
}

.modal-close {
  width: 36px;
  height: 36px;
  border: none;
  background: var(--neutral-100);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--neutral-600);
}

.modal-close:hover {
  background: var(--neutral-200);
}

/* ============================================
   SUCCESS MESSAGE
   ============================================ */
.success-message {
  display: none;
  text-align: center;
  padding: var(--space-10);
}

.success-message.show {
  display: block;
}

.success-message .check-icon {
  width: 64px;
  height: 64px;
  background: var(--primary-bg);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.success-message .check-icon svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
}

.success-message h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

.success-message p {
  color: var(--neutral-500);
  font-size: var(--font-size-sm);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-image {
    display: none;
  }

  .hero p {
    margin: 0 auto var(--space-8);
  }

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

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

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

  .product-detail {
    grid-template-columns: 1fr;
  }

  .product-detail.reverse {
    direction: ltr;
  }

  .about-intro {
    grid-template-columns: 1fr;
  }

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

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

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

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

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.25rem;
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.5rem;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6);
    gap: var(--space-2);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    border-top: 1px solid var(--neutral-200);
  }

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

  .nav-links a {
    padding: var(--space-4);
    font-size: var(--font-size-base);
    border-bottom: 1px solid var(--neutral-100);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: var(--space-4);
  }

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

  .hamburger {
    display: flex;
  }

  .strengths-grid,
  .products-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }

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

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

  .hero-stats {
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-2);
    text-align: center;
  }

  .brochure-section {
    flex-direction: column;
    text-align: center;
  }

  .page-hero h1 {
    font-size: var(--font-size-3xl);
  }

  .section {
    padding: var(--space-12) 0;
  }

  .section-alt,
  .section-primary {
    padding: var(--space-12) 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

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

/* ============================================
   LANGUAGE TOGGLE SWITCH
   ============================================ */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: var(--space-3);
  position: relative;
}

.lang-toggle-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--neutral-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: color var(--transition-fast);
  user-select: none;
}

.lang-toggle-label.active {
  color: var(--primary);
}

.lang-toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--neutral-200);
  border-radius: 12px;
  cursor: pointer;
  transition: background var(--transition-base);
  border: none;
  padding: 0;
  flex-shrink: 0;
}

.lang-toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: var(--white);
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
  transition: transform var(--transition-base), background var(--transition-base);
}

.lang-toggle-switch[aria-checked="true"] {
  background: var(--primary);
}

.lang-toggle-switch[aria-checked="true"]::after {
  transform: translateX(20px);
}

/* Mobile nav placement */
@media (max-width: 768px) {
  .lang-toggle {
    margin-left: 0;
    justify-content: center;
    padding: var(--space-4) 0;
    border-top: 1px solid var(--neutral-100);
    margin-top: var(--space-2);
  }

  .lang-toggle-switch {
    width: 48px;
    height: 26px;
  }

  .lang-toggle-switch::after {
    width: 20px;
    height: 20px;
  }

  .lang-toggle-switch[aria-checked="true"]::after {
    transform: translateX(22px);
  }
}