/* ============================================================
   Ka Kalıp Kauçuk — Main Stylesheet
   Design System + All Component Styles
   ============================================================ */

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

/* ---- CSS Custom Properties (Design Tokens) ---- */
:root {
  /* Colors — Ka Kalıp brand palette: Red / Black / Grey / White */
  --color-primary:        #1A1A1A;
  --color-secondary:      #2D2D2D;
  --color-accent:         #D72127;
  --color-accent-hover:   #B01C22;
  --color-bg-light:       #F4F4F4;
  --color-bg-dark:        #111111;
  --color-bg-mid:         #1A1A1A;
  --color-text-primary:   #FFFFFF;
  --color-text-secondary: #1A1A1A;
  --color-text-muted:     #9CA3AF;
  --color-trust:          #9CA3AF;
  --color-border:         rgba(255,255,255,0.1);
  --color-border-light:   #E5E7EB;

  /* Typography */
  --font-heading: 'Montserrat', 'Inter', sans-serif;
  --font-body:    'Inter', 'Open Sans', sans-serif;

  /* Type Scale */
  --text-xs:   0.75rem;   /* 12px */
  --text-sm:   0.875rem;  /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg:   1.125rem;  /* 18px */
  --text-xl:   1.25rem;   /* 20px */
  --text-2xl:  1.5rem;    /* 24px */
  --text-3xl:  1.875rem;  /* 30px */
  --text-4xl:  2.25rem;   /* 36px */
  --text-5xl:  3rem;      /* 48px */

  /* 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;
  --space-32: 8rem;

  /* Layout */
  --container-max: 1280px;
  --container-pad: 1.5rem;

  /* Radius */
  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.15), 0 2px 4px rgba(0,0,0,0.10);
  --shadow-lg:  0 10px 25px rgba(0,0,0,0.25), 0 5px 10px rgba(0,0,0,0.15);
  --shadow-xl:  0 20px 40px rgba(0,0,0,0.35);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Header height */
  --header-h: 80px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-secondary);
  background-color: #fff;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font: inherit;
}

/* ============================================================
   UTILITIES
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

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

.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-primary);
}

.section--navy {
  background-color: var(--color-primary);
  color: var(--color-text-primary);
}

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

.text-center { text-align: center; }
.text-accent  { color: var(--color-accent); }
.text-trust   { color: var(--color-trust); }
.text-muted   { color: var(--color-text-muted); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: var(--text-4xl); font-weight: 800; }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
  line-height: 1.15;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 640px;
  line-height: 1.7;
}

.section--dark .section-subtitle,
.section--navy .section-subtitle {
  color: rgba(255,255,255,0.65);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: all var(--transition-base);
  white-space: nowrap;
  border: 2px solid transparent;
}

.btn--primary {
  background-color: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn--primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(215,33,39,0.4);
}

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}
.btn--outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
}

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

.btn--lg {
  padding: 1rem 2.25rem;
  font-size: var(--text-base);
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ============================================================
   HEADER & NAVIGATION
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--color-bg-dark);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-h);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  background: rgba(15,25,35,0.97);
  box-shadow: 0 2px 20px rgba(0,0,0,0.4);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  height: var(--header-h);
  gap: var(--space-8);
}

/* Logo */
.site-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-logo img,
.logo-img {
  height: 52px;
  width: auto;
  display: block;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.site-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.site-logo-text .logo-main {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.site-logo-text .logo-sub {
  font-size: 0.6rem;
  font-weight: 500;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Main Navigation */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  letter-spacing: 0.03em;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: #fff;
  background: rgba(255,255,255,0.07);
}

.nav-link svg {
  width: 14px; height: 14px;
  transition: transform var(--transition-fast);
}

/* Dropdown */
.nav-item:hover .nav-link svg {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 240px;
  background: var(--color-secondary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255,255,255,0.08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-base);
  z-index: 100;
  overflow: hidden;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.75);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: all var(--transition-fast);
}

.nav-dropdown a:last-child { border-bottom: none; }

.nav-dropdown a:hover {
  color: #fff;
  background: rgba(255,255,255,0.06);
  padding-left: var(--space-6);
}

/* Header Right */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 8px;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.lang-btn:hover {
  color: #fff;
  background: rgba(255,255,255,0.07);
}

.lang-btn.active {
  color: var(--color-accent);
  border-color: rgba(215,33,39,0.3);
  background: rgba(215,33,39,0.08);
}

.lang-btn .flag {
  font-size: 14px;
  line-height: 1;
}

/* Mobile Menu Toggle */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}

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

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) var(--container-pad);
  z-index: 999;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
}

.mobile-nav.open {
  display: block;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-nav-list a {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: rgba(255,255,255,0.8);
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: var(--radius-sm);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.mobile-nav-list a:hover {
  color: #fff;
  background: rgba(255,255,255,0.05);
}

.mobile-nav-list .sub-link {
  padding-left: var(--space-8);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
}

.mobile-nav-actions {
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-lang-switcher {
  display: flex;
  gap: var(--space-2);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.7);
  padding: var(--space-16) 0 0;
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-border);
}

.footer-brand .site-logo {
  margin-bottom: var(--space-5);
}

.footer-brand p {
  font-size: var(--text-sm);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.footer-certs {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: rgba(156,163,175,0.1);
  border: 1px solid rgba(156,163,175,0.25);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-trust);
  letter-spacing: 0.05em;
}

.cert-badge svg {
  width: 14px; height: 14px;
  flex-shrink: 0;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col ul li a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--color-accent);
}

.footer-contact-item {
  display: flex;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--space-3);
  line-height: 1.5;
}

.footer-contact-item svg {
  width: 16px; height: 16px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-accent);
}

.footer-bottom {
  padding: var(--space-5) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer-bottom-links a {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
  color: rgba(255,255,255,0.7);
}

/* ============================================================
   FLOATING CTA (Mobile)
   ============================================================ */
.floating-cta {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 800;
  display: none;
}

.floating-cta .btn {
  box-shadow: 0 4px 20px rgba(215,33,39,0.5);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-bg-dark);
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary) 60%, #0D0D0D 100%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(215,33,39,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(26,26,26,0.6) 0%, transparent 50%);
}

/* Grid overlay for industrial feel */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-image-overlay {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  mix-blend-mode: luminosity;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
  padding: var(--space-20) 0;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}

.hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: var(--color-accent);
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero h1 span {
  color: var(--color-accent);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  margin-bottom: var(--space-10);
  max-width: 600px;
}

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

.hero-stats {
  position: relative;
  z-index: 2;
  margin-top: var(--space-16);
  display: flex;
  gap: var(--space-10);
  flex-wrap: wrap;
  padding-top: var(--space-10);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.hero-stat-value {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.hero-stat-label {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ============================================================
   TRUST BAR
   ============================================================ */
.trust-bar {
  background: var(--color-primary);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: var(--space-5) 0;
}

.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-10);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: rgba(255,255,255,0.7);
  font-size: var(--text-sm);
  font-weight: 500;
}

.trust-item svg {
  width: 20px; height: 20px;
  color: var(--color-trust);
  flex-shrink: 0;
}

.trust-item strong {
  color: #fff;
  font-weight: 700;
}

.trust-divider {
  width: 1px;
  height: 32px;
  background: rgba(255,255,255,0.1);
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
  margin-bottom: var(--space-12);
}

.section-header.centered {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ============================================================
   PRODUCT CARDS / GRID
   ============================================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.product-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.product-card-image {
  aspect-ratio: 4/3;
  background: var(--color-bg-light);
  overflow: hidden;
  position: relative;
}

.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);
}

/* Placeholder image */
.img-placeholder {
  width: 100%; height: 100%;
  background: linear-gradient(135deg, #e5e7eb 0%, #d1d5db 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.img-placeholder svg {
  width: 36px; height: 36px;
  opacity: 0.35;
}

.product-card-body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.product-card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-5);
}

.product-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.03em;
  transition: gap var(--transition-fast);
}

.product-card-link:hover {
  gap: var(--space-3);
}

.product-card-link svg {
  width: 16px; height: 16px;
}

/* Dark section product cards */
.section--dark .product-card,
.section--navy .product-card {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.08);
}

.section--dark .product-card-title,
.section--navy .product-card-title {
  color: #fff;
}

.section--dark .product-card-desc,
.section--navy .product-card-desc {
  color: rgba(255,255,255,0.55);
}

/* ============================================================
   FEATURE ICONS (Neden Biz / Why Us)
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-6);
}

.feature-item {
  padding: var(--space-8);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.feature-item:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(215,33,39,0.3);
  transform: translateY(-2px);
}

.feature-icon {
  width: 52px; height: 52px;
  background: rgba(215,33,39,0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  border: 1px solid rgba(215,33,39,0.2);
}

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

.feature-item h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-3);
}

.feature-item p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  line-height: 1.65;
}

/* ============================================================
   STATS / NUMBERS
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-1);
}

.stat-card {
  padding: var(--space-8) var(--space-6);
  text-align: center;
  border-right: 1px solid var(--color-border);
}

.stat-card:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  display: block;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.05em;
}

/* ============================================================
   REFERENCE LOGOS (Client Carousel)
   ============================================================ */
.refs-section {
  overflow: hidden;
}

.refs-track-wrapper {
  overflow: hidden;
  -webkit-mask: linear-gradient(90deg, transparent, #fff 10%, #fff 90%, transparent);
  mask: linear-gradient(90deg, transparent, #fff 10%, #fff 90%, transparent);
}

.refs-track {
  display: flex;
  gap: var(--space-8);
  animation: scroll-refs 30s linear infinite;
  width: max-content;
}

.refs-track:hover {
  animation-play-state: paused;
}

@keyframes scroll-refs {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.ref-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4) var(--space-6);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  min-width: 140px;
  height: 70px;
  transition: all var(--transition-base);
}

.ref-logo:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(215,33,39,0.3);
}

.ref-logo img {
  max-height: 36px;
  max-width: 110px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.5;
  transition: opacity var(--transition-base);
}

.ref-logo:hover img {
  opacity: 0.85;
}

.ref-logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.05em;
  transition: color var(--transition-base);
}

.ref-logo:hover .ref-logo-text {
  color: rgba(255,255,255,0.75);
}

/* ============================================================
   ABOUT / COMPANY INTRO BLOCK
   ============================================================ */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-split.reverse {
  direction: rtl;
}
.about-split.reverse > * {
  direction: ltr;
}

.about-image {
  aspect-ratio: 4/3;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-bg-light);
}

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

.about-content .section-label {
  display: block;
  margin-bottom: var(--space-3);
}

.about-content .section-title {
  margin-bottom: var(--space-5);
}

.about-content p {
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
  line-height: 1.75;
}

.about-content p:last-of-type {
  margin-bottom: var(--space-8);
}

.key-points {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.key-point {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.key-point svg {
  width: 18px; height: 18px;
  color: var(--color-trust);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary) 100%);
  padding: var(--space-20) 0;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(215,33,39,0.12) 0%, transparent 60%);
}

.cta-banner-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-10);
}

.cta-banner-text h2 {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-3);
}

.cta-banner-text p {
  color: rgba(255,255,255,0.6);
  font-size: var(--text-lg);
  max-width: 540px;
}

.cta-banner-actions {
  display: flex;
  gap: var(--space-4);
  flex-shrink: 0;
  flex-wrap: wrap;
}

/* ============================================================
   PAGE HERO (Inner Pages)
   ============================================================ */
.page-hero {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary) 100%);
  padding: calc(var(--header-h) + var(--space-16)) 0 var(--space-16);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
}

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

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.page-hero p {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  font-size: var(--text-sm);
}

.breadcrumb a {
  color: rgba(255,255,255,0.45);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: rgba(255,255,255,0.8);
}

.breadcrumb span {
  color: rgba(255,255,255,0.25);
}

.breadcrumb .current {
  color: rgba(255,255,255,0.7);
  font-weight: 500;
}

/* ============================================================
   PROCESS / TIMELINE
   ============================================================ */
.process-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-8);
  padding-bottom: var(--space-10);
  position: relative;
}

.process-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 40px;
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  transform: translateX(-50%);
}

.process-item:last-child::before { display: none; }

.process-number {
  width: 60px; height: 60px;
  background: rgba(215,33,39,0.1);
  border: 2px solid rgba(215,33,39,0.3);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-accent);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.process-content h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-3);
  padding-top: var(--space-4);
}

.process-content p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
}

/* ============================================================
   CERTIFICATES
   ============================================================ */
.cert-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.cert-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
}

.cert-card:hover {
  border-color: rgba(215,33,39,0.4);
  background: rgba(215,33,39,0.04);
  transform: translateY(-2px);
}

.cert-card-icon {
  width: 72px; height: 72px;
  background: rgba(156,163,175,0.1);
  border: 2px solid rgba(156,163,175,0.25);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
}

.cert-card-icon svg {
  width: 36px; height: 36px;
  color: var(--color-trust);
}

.cert-card h3 {
  font-size: var(--text-xl);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-2);
}

.cert-card .cert-name {
  font-size: var(--text-sm);
  color: var(--color-trust);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.cert-card p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  line-height: 1.65;
  margin-bottom: var(--space-6);
}

.cert-download {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
}

.cert-download:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.05);
}

.cert-download svg {
  width: 14px; height: 14px;
}

/* ============================================================
   CONTACT FORM
   ============================================================ */
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-info h2 {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-5);
}

.contact-info p {
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact-detail {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-detail-icon {
  width: 44px; height: 44px;
  background: rgba(215,33,39,0.1);
  border: 1px solid rgba(215,33,39,0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail-icon svg {
  width: 20px; height: 20px;
  color: var(--color-accent);
}

.contact-detail-text h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-1);
}

.contact-detail-text p,
.contact-detail-text a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
}

.contact-detail-text a:hover {
  color: var(--color-accent);
}

/* Form */
.contact-form {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
}

.form-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-8);
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.02em;
}

.form-group label .required {
  color: var(--color-accent);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  color: #fff;
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  outline: none;
}

.form-control::placeholder {
  color: rgba(255,255,255,0.25);
}

.form-control:focus {
  border-color: var(--color-accent);
  background: rgba(215,33,39,0.05);
  box-shadow: 0 0 0 3px rgba(215,33,39,0.15);
}

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='rgba(255,255,255,0.4)' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 2.5rem;
  cursor: pointer;
}

select.form-control option {
  background: var(--color-secondary);
  color: #fff;
}

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

.file-upload {
  border: 2px dashed rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.file-upload:hover {
  border-color: rgba(215,33,39,0.4);
  background: rgba(215,33,39,0.03);
}

.file-upload input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.file-upload svg {
  width: 28px; height: 28px;
  color: rgba(255,255,255,0.2);
  margin: 0 auto var(--space-2);
}

.file-upload p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.4);
}

.file-upload span {
  color: var(--color-accent);
  font-weight: 600;
}

.form-submit {
  margin-top: var(--space-6);
}

.form-note {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.3);
  text-align: center;
}

/* ============================================================
   MAP EMBED
   ============================================================ */
.map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  height: 400px;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================================
   PRODUCT DETAIL PAGE
   ============================================================ */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.product-gallery {
  position: sticky;
  top: calc(var(--header-h) + var(--space-8));
}

.product-main-image {
  aspect-ratio: 1;
  background: var(--color-bg-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  margin-bottom: var(--space-4);
}

.product-main-image img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.product-thumbnails {
  display: flex;
  gap: var(--space-3);
}

.product-thumb {
  width: 80px; height: 80px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid var(--color-border-light);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.product-thumb.active,
.product-thumb:hover {
  border-color: var(--color-accent);
}

.product-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.product-info h1 {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.product-intro {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border-light);
}

.product-specs {
  margin-bottom: var(--space-8);
}

.product-specs h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.spec-table {
  border-collapse: collapse;
  width: 100%;
}

.spec-table tr {
  border-bottom: 1px solid var(--color-border-light);
}

.spec-table td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
}

.spec-table td:first-child {
  font-weight: 600;
  color: var(--color-text-secondary);
  width: 45%;
  background: var(--color-bg-light);
}

.spec-table td:last-child {
  color: var(--color-text-muted);
}

.materials-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.material-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg-light);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.applications-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.application-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.application-item::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* ============================================================
   GALLERY GRID
   ============================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.gallery-item {
  aspect-ratio: 4/3;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}

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

.gallery-item:hover img {
  transform: scale(1.05);
}

/* ============================================================
   REFERENCES PAGE
   ============================================================ */
.refs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-4);
}

.ref-card {
  aspect-ratio: 3/2;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  transition: all var(--transition-base);
}

.ref-card:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(215,33,39,0.3);
  transform: scale(1.02);
}

.ref-card img {
  max-height: 48px;
  max-width: 100%;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.45;
  transition: opacity var(--transition-base);
}

.ref-card:hover img {
  opacity: 0.8;
}

.ref-card-name {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.04em;
  text-align: center;
  transition: color var(--transition-base);
}

.ref-card:hover .ref-card-name {
  color: rgba(255,255,255,0.75);
}

/* Industry Group Label */
.refs-group {
  margin-bottom: var(--space-10);
}

.refs-group-title {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

/* ============================================================
   MATERIALS OVERVIEW
   ============================================================ */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
}

.material-card {
  padding: var(--space-6);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.material-card:hover {
  border-color: rgba(215,33,39,0.3);
  background: rgba(215,33,39,0.04);
}

.material-abbr {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.material-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--space-2);
}

.material-desc {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.4);
  line-height: 1.5;
}

/* ============================================================
   NOTIFICATION TOAST / FORM SUCCESS
   ============================================================ */
.form-success {
  display: none;
  padding: var(--space-4) var(--space-6);
  background: rgba(156,163,175,0.1);
  border: 1px solid rgba(156,163,175,0.3);
  border-radius: var(--radius-md);
  color: var(--color-trust);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-top: var(--space-4);
  align-items: center;
  gap: var(--space-3);
}

.form-success.show {
  display: flex;
}

.form-success svg {
  width: 20px; height: 20px;
  flex-shrink: 0;
}

/* ============================================================
   SCROLL TO TOP
   ============================================================ */
.scroll-top {
  position: fixed;
  bottom: var(--space-6);
  left: var(--space-6);
  width: 44px; height: 44px;
  background: var(--color-primary);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 700;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}

.scroll-top svg {
  width: 20px; height: 20px;
  color: #fff;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.5s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-reveal].revealed {
  opacity: 1;
  transform: none;
}