/* ========================================
   Global Trade Manufacturer Website
   Design System & Global Styles
   ======================================== */

/* --- CSS Variables / Design Tokens --- */
:root {
  /* Colors */
  --color-primary: #1a56db;
  --color-primary-dark: #0f3b8c;
  --color-primary-light: #e8f0fe;
  --color-accent: #f59e0b;
  --color-accent-dark: #d97706;
  --color-white: #ffffff;
  --color-bg: #f8fafc;
  --color-bg-alt: #f1f5f9;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-success: #10b981;
  --color-error: #ef4444;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
  --border-radius: 8px;
  --border-radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.04);

  /* Transitions */
  --transition: 0.3s ease;
  --transition-fast: 0.15s ease;
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

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

.section {
  padding: var(--spacing-4xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-sm);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.bg-light {
  background: var(--color-bg);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 14px 32px;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: all var(--transition);
  white-space: nowrap;
}

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

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

.btn-outline {
  border: 2px solid var(--color-white);
  color: var(--color-white);
}
.btn-outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn-outline-dark {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}
.btn-outline-dark:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-lg {
  padding: 18px 40px;
  font-size: var(--font-size-lg);
}

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: box-shadow var(--transition);
}
.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(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}
.nav-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: 800;
}

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

.nav-menu a {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}
.nav-menu a:hover,
.nav-menu a.active {
  color: var(--color-primary);
}
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}
.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.lang-switch {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}
.lang-switch:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition);
}
.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   HERO
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #1e40af 100%);
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: rgba(255,255,255,0.03);
  transform: rotate(15deg);
  pointer-events: none;
}

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

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

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  color: var(--color-white);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
  backdrop-filter: blur(5px);
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--spacing-lg);
}
.hero-title span {
  color: var(--color-accent);
}

.hero-text {
  font-size: var(--font-size-lg);
  line-height: 1.7;
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

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

.hero-image .hero-img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: rgba(255,255,255,0.1);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(5px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: var(--font-size-sm);
  gap: var(--spacing-md);
}
.hero-img-placeholder .placeholder-icon {
  font-size: 4rem;
  opacity: 0.5;
}

/* ========================================
   ADVANTAGES / FEATURES
   ======================================== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.advantage-card {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-xl);
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.advantage-icon {
  width: 64px;
  height: 64px;
  background: var(--color-primary-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  font-size: 1.75rem;
}
.advantage-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}
.advantage-card p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

/* ========================================
   STATS COUNTER
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-xl);
}

.stat-number {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}
.stat-number .plus {
  color: var(--color-accent);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.product-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.product-card-image {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  overflow: hidden;
}
.product-card-image .img-placeholder {
  font-size: 3rem;
  opacity: 0.3;
}

.product-card-body {
  padding: var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-body h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.product-card-body .product-specs {
  display: flex;
  gap: var(--spacing-md);
  margin: var(--spacing-sm) 0;
  flex-wrap: wrap;
}

.product-spec {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  background: var(--color-bg);
  padding: 4px 10px;
  border-radius: 50px;
}

.product-card-body .product-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
  flex: 1;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-price {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary);
}
.product-price .unit {
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-text-secondary);
}

/* ========================================
   CERTIFICATIONS
   ======================================== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-xl);
  align-items: center;
}

.cert-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  transition: all var(--transition);
}
.cert-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.cert-badge {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  border: 3px solid;
}
.cert-item:nth-child(1) .cert-badge { color: #1a56db; border-color: #1a56db; background: #e8f0fe; }
.cert-item:nth-child(2) .cert-badge { color: #059669; border-color: #059669; background: #ecfdf5; }
.cert-item:nth-child(3) .cert-badge { color: #d97706; border-color: #d97706; background: #fffbeb; }
.cert-item:nth-child(4) .cert-badge { color: #7c3aed; border-color: #7c3aed; background: #f5f3ff; }
.cert-item:nth-child(5) .cert-badge { color: #db2777; border-color: #db2777; background: #fdf2f8; }

.cert-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-align: center;
}

/* ========================================
   TESTIMONIALS
   ======================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.testimonial-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
  border: 1px solid var(--color-border);
  position: relative;
}
.testimonial-card::before {
  content: '"';
  font-size: 4rem;
  line-height: 1;
  color: var(--color-primary-light);
  font-weight: 800;
  font-family: Georgia, serif;
  position: absolute;
  top: var(--spacing-lg);
  left: var(--spacing-lg);
}

.testimonial-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
  padding-top: var(--spacing-md);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--color-primary);
  font-size: var(--font-size-sm);
}

.author-info h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
}
.author-info p {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ========================================
   CTA BANNER
   ======================================== */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: var(--spacing-4xl) 0;
  text-align: center;
  color: var(--color-white);
}

.cta-banner h2 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.cta-banner p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ========================================
   PAGE HERO (inner pages)
   ======================================== */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: calc(var(--nav-height) + var(--spacing-4xl)) 0 var(--spacing-3xl);
  text-align: center;
  color: var(--color-white);
}

.page-hero h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
}

.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

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

/* ========================================
   ABOUT PAGE
   ======================================== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about-image-placeholder {
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

.about-text h2 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

.about-text p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
}
.highlight-item .check-icon {
  width: 24px;
  height: 24px;
  background: var(--color-success);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: var(--spacing-2xl);
}

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

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
  padding-left: var(--spacing-lg);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -21px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 3px solid var(--color-primary-light);
}

.timeline-year {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.timeline-item h4 {
  font-weight: 600;
  margin-bottom: 4px;
}

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

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.gallery-item {
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
  border-radius: var(--border-radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  transition: all var(--transition);
}
.gallery-item:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.gallery-item .gallery-icon {
  font-size: 2.5rem;
  opacity: 0.4;
}

/* ========================================
   PRODUCTS PAGE
   ======================================== */
.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-2xl);
}

.filter-btn {
  padding: 10px 24px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: 50px;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* Products page uses products-grid above */

/* ========================================
   CONTACT PAGE
   ======================================== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-3xl);
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-info-card {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--color-white);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.contact-info-card:hover {
  box-shadow: var(--shadow-md);
}

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

.contact-info-text h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 2px;
}
.contact-info-text p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Contact Form */
.contact-form {
  background: var(--color-white);
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.contact-form h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  background: var(--color-white);
  transition: border var(--transition-fast);
}

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

.form-group input.error,
.form-group textarea.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239,68,68,0.1);
}

.form-error-msg {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: 4px;
  display: none;
}
.form-error-msg.visible {
  display: block;
}

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

.form-submit-row {
  margin-top: var(--spacing-lg);
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--spacing-2xl);
}
.form-success.visible {
  display: block;
}
.form-success .success-icon {
  width: 64px;
  height: 64px;
  background: #ecfdf5;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto var(--spacing-md);
}
.form-success h3 {
  color: var(--color-success);
}

/* Map Placeholder */
.map-placeholder {
  width: 100%;
  height: 300px;
  background: var(--color-bg-alt);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-2xl);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--color-text);
  color: var(--color-white);
  padding: var(--spacing-4xl) 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--spacing-2xl);
  padding-bottom: var(--spacing-3xl);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .nav-logo {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}
.footer-brand p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}

.footer-col h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-lg);
  color: var(--color-white);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--spacing-sm);
}
.footer-contact .fc-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

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

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-links a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  transition: all var(--transition-fast);
}
.social-links a:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* ========================================
   BACK TO TOP
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  cursor: pointer;
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
}

/* ========================================
   RESPONSIVE
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.625rem;
    --spacing-4xl: 4rem;
    --spacing-3xl: 3rem;
  }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content {
    order: 2;
  }
  .hero-image {
    order: 1;
  }
  .hero-text {
    max-width: 100%;
  }
  .hero-buttons {
    justify-content: center;
  }
  .hero-image .hero-img-placeholder {
    max-width: 400px;
    margin: 0 auto;
  }

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

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

  .cert-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
  }

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

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

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

/* Mobile */
@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.375rem;
    --font-size-2xl: 1.25rem;
    --spacing-4xl: 3rem;
    --spacing-3xl: 2rem;
    --spacing-2xl: 1.5rem;
    --nav-height: 60px;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .nav-actions {
    display: none;
  }
  .hamburger {
    display: flex;
  }

  .advantages-grid,
  .products-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  .stat-number {
    font-size: var(--font-size-3xl);
  }

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

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

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

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

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

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

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

  .timeline {
    padding-left: var(--spacing-lg);
  }
  .timeline-item::before {
    left: -13px;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cert-grid {
    grid-template-columns: 1fr 1fr;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}