/* =====================================================
   ÇELIKLER YAPI DÜNYASI — Design System & Styles
   Industrial, trust-building, mobile-first design
   ===================================================== */

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

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Colors — Endüstriyel & Güven Verici */
  --clr-primary: #1B3A5C;
  --clr-primary-light: #2A5580;
  --clr-primary-dark: #0F2440;
  --clr-secondary: #2E7D32;
  --clr-secondary-light: #43A047;
  --clr-secondary-dark: #1B5E20;
  --clr-accent: #E65100;
  --clr-accent-light: #FF6D00;
  --clr-accent-hover: #BF360C;
  --clr-dark: #1A1A2E;
  --clr-dark-alt: #16213E;
  --clr-surface: #F5F7FA;
  --clr-surface-alt: #EDF0F5;
  --clr-white: #FFFFFF;
  --clr-steel: #4A5568;
  --clr-steel-light: #718096;
  --clr-border: #E2E8F0;
  --clr-success: #2E7D32;
  --clr-whatsapp: #25D366;

  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  --fs-hero: clamp(2rem, 5vw, 3.5rem);
  --fs-h1: clamp(1.75rem, 4vw, 2.75rem);
  --fs-h2: clamp(1.5rem, 3vw, 2.25rem);
  --fs-h3: clamp(1.15rem, 2.5vw, 1.5rem);
  --fs-h4: clamp(1rem, 2vw, 1.25rem);
  --fs-body: 1rem;
  --fs-body-lg: 1.125rem;
  --fs-small: 0.875rem;
  --fs-xs: 0.75rem;
  --lh-heading: 1.2;
  --lh-body: 1.7;

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

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 900px;
  --header-height: 80px;

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

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 50px rgba(0,0,0,0.15);
  --shadow-card: 0 4px 20px rgba(27,58,92,0.08);
  --shadow-card-hover: 0 12px 40px rgba(27,58,92,0.15);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-spring: 0.4s 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-body);
  color: var(--clr-steel);
  background-color: var(--clr-white);
  line-height: var(--lh-body);
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
  background: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--clr-primary-dark);
  line-height: var(--lh-heading);
  font-weight: 700;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p {
  margin-bottom: var(--space-md);
  color: var(--clr-steel);
}

.text-primary { color: var(--clr-primary); }
.text-secondary { color: var(--clr-secondary); }
.text-accent { color: var(--clr-accent); }
.text-white { color: var(--clr-white); }
.text-center { text-align: center; }
.text-small { font-size: var(--fs-small); }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-narrow {
  max-width: var(--container-narrow);
}

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

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
  position: relative;
}

.section-header h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-light));
  margin: var(--space-md) auto 0;
  border-radius: 2px;
}

.section-header p {
  font-size: var(--fs-body-lg);
  color: var(--clr-steel-light);
}

.grid {
  display: grid;
  gap: var(--space-xl);
}

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

@media (max-width: 992px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 576px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.8rem 1.8rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--fs-body);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  color: var(--clr-white);
  box-shadow: 0 4px 15px rgba(27,58,92,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(27,58,92,0.4);
}

.btn-accent {
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-light));
  color: var(--clr-white);
  box-shadow: 0 4px 15px rgba(230,81,0,0.3);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(230,81,0,0.4);
}

.btn-whatsapp {
  background: linear-gradient(135deg, var(--clr-whatsapp), #20BA5C);
  color: var(--clr-white);
  box-shadow: 0 4px 15px rgba(37,211,102,0.3);
}

.btn-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(37,211,102,0.4);
}

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

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

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

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

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: var(--fs-body-lg);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 0.5rem 1.2rem;
  font-size: var(--fs-small);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition-base);
  background: transparent;
}

.header.scrolled {
  background: rgba(26,26,46,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
  height: 70px;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: 1001;
}

.brand-logo-img {
  max-height: 52px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
  transition: transform var(--transition-fast);
}

.brand-logo-img:hover {
  transform: scale(1.03);
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 900;
  font-size: 1.1rem;
  font-family: var(--font-heading);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-text .brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--clr-white);
  line-height: 1.1;
}

.logo-text .tagline {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.7);
  font-weight: 400;
}

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

.nav-link {
  padding: 0.5rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--clr-white);
  background: rgba(255,255,255,0.1);
}

/* Dropdown Menu */
.nav-dropdown {
  position: relative;
}

.nav-dropdown .dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-dropdown .dropdown-toggle::after {
  content: '▾';
  font-size: 0.7rem;
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .dropdown-toggle::after {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 250px;
  background: var(--clr-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  padding: var(--space-xs) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
  z-index: 1002;
}

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

.dropdown-menu a {
  display: block;
  padding: 0.65rem 1.2rem;
  color: var(--clr-steel);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.dropdown-menu a:hover {
  background: var(--clr-surface);
  color: var(--clr-primary);
  padding-left: 1.5rem;
}

.header-cta {
  padding: 0.5rem 1.2rem;
  font-size: 0.85rem;
}

/* Mobile Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  z-index: 1001;
  padding: 5px;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: all var(--transition-base);
}

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

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

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

@media (max-width: 992px) {
  .hamburger {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 400px;
    height: 100vh;
    background: var(--clr-dark);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: var(--space-2xl);
    gap: var(--space-xs);
    transition: right var(--transition-base);
    z-index: 1000;
  }

  .nav.open {
    right: 0;
  }

  .nav-link {
    font-size: 1.1rem;
    padding: 0.7rem 1rem;
    width: 100%;
  }

  .nav-dropdown .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-sm);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    padding: 0;
  }

  .nav-dropdown.open .dropdown-menu {
    max-height: 500px;
    padding: var(--space-xs) 0;
  }

  .dropdown-menu a {
    color: rgba(255,255,255,0.75);
    font-size: 0.95rem;
  }

  .dropdown-menu a:hover {
    color: var(--clr-white);
    background: rgba(255,255,255,0.1);
  }

  .header-cta {
    display: none;
  }

  .mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .mobile-overlay.visible {
    opacity: 1;
    visibility: visible;
  }
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background: linear-gradient(
    135deg,
    #0B1B2D 0%,
    #132A45 35%,
    #1B3A5C 70%,
    #0F2440 100%
  );
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 80% 20%, rgba(230, 81, 0, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(46, 125, 50, 0.12) 0%, transparent 40%),
    url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h40v40H0V0zm1 1h38v38H1V1z' fill='%23ffffff' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100px;
  background: linear-gradient(to top, var(--clr-white), transparent);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 720px;
  padding-top: var(--header-height);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.4rem 1rem;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-xl);
  color: var(--clr-white);
  font-size: var(--fs-small);
  font-weight: 500;
  margin-bottom: var(--space-lg);
  backdrop-filter: blur(8px);
}

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

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  font-size: var(--fs-hero);
  font-weight: 900;
  color: var(--clr-white);
  margin-bottom: var(--space-lg);
  line-height: 1.15;
}

.hero h1 .highlight {
  background: linear-gradient(90deg, var(--clr-accent-light), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: var(--fs-body-lg);
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-xl);
  line-height: 1.8;
}

.hero .btn-group {
  margin-bottom: var(--space-2xl);
}

/* Hero decorative elements */
.hero-shapes {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.hero-shape {
  position: absolute;
  border: 2px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
}

.hero-shape-1 {
  width: 300px;
  height: 300px;
  top: 15%;
  right: 5%;
  transform: rotate(15deg);
  animation: float-shape 8s ease-in-out infinite;
}

.hero-shape-2 {
  width: 200px;
  height: 200px;
  bottom: 25%;
  right: 20%;
  transform: rotate(-10deg);
  animation: float-shape 10s ease-in-out infinite reverse;
}

@keyframes float-shape {
  0%, 100% { transform: translateY(0) rotate(15deg); }
  50% { transform: translateY(-20px) rotate(20deg); }
}

/* --- Stats Bar --- */
.stats-bar {
  background: var(--clr-white);
  padding: var(--space-2xl) 0;
  position: relative;
  z-index: 5;
  margin-top: -60px;
}

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

.stat-item {
  text-align: center;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: var(--clr-surface);
  transition: all var(--transition-base);
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: var(--fs-small);
  color: var(--clr-steel-light);
  font-weight: 500;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }
  .stat-item {
    padding: var(--space-md);
  }
}

/* --- Service / Product Cards --- */
.card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  position: relative;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

.card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.card-img-wrapper {
  overflow: hidden;
  position: relative;
}

.card-img-wrapper::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 40%;
  background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
}

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

.card-body h3 {
  margin-bottom: var(--space-sm);
  font-size: var(--fs-h4);
}

.card-body p {
  font-size: var(--fs-small);
  margin-bottom: var(--space-md);
  color: var(--clr-steel-light);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--clr-primary);
  font-weight: 600;
  font-size: var(--fs-small);
  transition: gap var(--transition-fast);
}

.card-link:hover {
  gap: var(--space-sm);
  color: var(--clr-accent);
}

.card-link .arrow {
  transition: transform var(--transition-fast);
}

.card-link:hover .arrow {
  transform: translateX(4px);
}

/* --- Feature Cards (Neden Biz) --- */
.feature-card {
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  background: var(--clr-white);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  border: 1px solid var(--clr-border);
  text-align: center;
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin: 0 auto var(--space-lg);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  color: var(--clr-white);
}

.feature-card h4 {
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: var(--fs-small);
  color: var(--clr-steel-light);
  margin-bottom: 0;
}

/* --- Testimonials --- */
.testimonial-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--clr-border);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  font-family: Georgia, serif;
  font-size: 4rem;
  color: var(--clr-primary);
  opacity: 0.15;
  position: absolute;
  top: 10px;
  left: 20px;
  line-height: 1;
}

.testimonial-text {
  font-style: italic;
  color: var(--clr-steel);
  margin-bottom: var(--space-lg);
  line-height: 1.8;
  font-size: var(--fs-body);
}

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

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
  font-weight: 700;
  font-family: var(--font-heading);
  font-size: 1rem;
}

.testimonial-author-info {
  display: flex;
  flex-direction: column;
}

.testimonial-author-name {
  font-weight: 600;
  color: var(--clr-primary-dark);
  font-size: var(--fs-body);
}

.testimonial-author-role {
  font-size: var(--fs-xs);
  color: var(--clr-steel-light);
}

.testimonial-stars {
  color: #FFB300;
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary), var(--clr-primary-light));
  padding: var(--space-3xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-full);
}

.cta-section h2 {
  color: var(--clr-white);
  margin-bottom: var(--space-md);
}

.cta-section p {
  color: rgba(255,255,255,0.8);
  font-size: var(--fs-body-lg);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Quote Form --- */
.quote-form-section {
  background: var(--clr-surface);
  padding: var(--space-3xl) 0;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

@media (max-width: 576px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

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

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  font-size: var(--fs-small);
  color: var(--clr-primary-dark);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-md);
  background: var(--clr-white);
  transition: all var(--transition-fast);
  font-size: var(--fs-body);
  color: var(--clr-dark);
}

.form-control:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 4px rgba(27,58,92,0.1);
}

.form-control::placeholder {
  color: var(--clr-steel-light);
}

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

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

.form-card {
  background: var(--clr-white);
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* --- Footer --- */
.footer {
  background: var(--clr-dark);
  color: rgba(255,255,255,0.7);
  padding-top: var(--space-3xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand .logo-text .brand {
  font-size: 1.3rem;
}

.footer-brand p {
  color: rgba(255,255,255,0.5);
  font-size: var(--fs-small);
  margin-top: var(--space-md);
  line-height: 1.8;
}

.footer h4 {
  color: var(--clr-white);
  font-size: var(--fs-body);
  margin-bottom: var(--space-lg);
}

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

.footer-links a {
  color: rgba(255,255,255,0.55);
  font-size: var(--fs-small);
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--clr-white);
  padding-left: 5px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: var(--fs-small);
  color: rgba(255,255,255,0.55);
}

.footer-contact-item .icon {
  color: var(--clr-accent-light);
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

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

.footer-bottom p {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.35);
  margin-bottom: 0;
}

/* --- Floating WhatsApp Button --- */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background: var(--clr-whatsapp);
  color: var(--clr-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  z-index: 998;
  transition: all var(--transition-base);
  animation: whatsapp-pulse 2s infinite;
}

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

@keyframes whatsapp-pulse {
  0% { box-shadow: 0 4px 20px rgba(37,211,102,0.4); }
  50% { box-shadow: 0 4px 30px rgba(37,211,102,0.6), 0 0 0 10px rgba(37,211,102,0.1); }
  100% { box-shadow: 0 4px 20px rgba(37,211,102,0.4); }
}

.whatsapp-float .tooltip {
  position: absolute;
  right: 70px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--clr-dark);
  color: var(--clr-white);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: var(--fs-small);
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.whatsapp-float:hover .tooltip {
  opacity: 1;
  visibility: visible;
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 96px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--clr-primary);
  color: var(--clr-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-md);
  z-index: 997;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
}

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

.back-to-top:hover {
  background: var(--clr-primary-light);
  transform: translateY(-3px);
}

/* --- Page Header (inner pages) --- */
.page-header {
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-full);
}

.page-header h1 {
  color: var(--clr-white);
  margin-bottom: var(--space-md);
}

.page-header p {
  color: rgba(255,255,255,0.75);
  max-width: 600px;
  margin: 0 auto;
  font-size: var(--fs-body-lg);
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  font-size: var(--fs-small);
}

.breadcrumb a {
  color: rgba(255,255,255,0.6);
}

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

.breadcrumb .separator {
  color: rgba(255,255,255,0.3);
}

.breadcrumb .current {
  color: var(--clr-accent-light);
  font-weight: 600;
}

/* --- Product Detail Page --- */
.product-detail {
  padding: var(--space-3xl) 0;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

@media (max-width: 768px) {
  .product-detail-grid {
    grid-template-columns: 1fr;
  }
}

.product-image-main {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.product-image-main img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.product-info h2 {
  margin-bottom: var(--space-md);
}

.product-info p {
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}

.feature-list {
  margin-bottom: var(--space-xl);
}

.feature-list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--clr-border);
}

.feature-list-item:last-child {
  border-bottom: none;
}

.feature-list-item .check {
  color: var(--clr-secondary);
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.feature-list-item span {
  color: var(--clr-steel);
  font-size: var(--fs-body);
}

/* Usage Areas */
.usage-areas {
  padding: var(--space-3xl) 0;
  background: var(--clr-surface);
}

.usage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 768px) {
  .usage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .usage-grid {
    grid-template-columns: 1fr;
  }
}

.usage-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--clr-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.usage-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.usage-item .icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.usage-item span {
  font-weight: 600;
  color: var(--clr-primary-dark);
  font-size: var(--fs-body);
}

/* --- Region Page --- */
.region-hero {
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.region-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.region-services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 576px) {
  .region-services-grid {
    grid-template-columns: 1fr;
  }
}

.region-service-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  border-left: 4px solid var(--clr-primary);
}

.region-service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.region-service-card .icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
  font-size: 1.4rem;
  flex-shrink: 0;
}

.region-service-card h3 {
  margin-bottom: var(--space-xs);
  font-size: var(--fs-h4);
}

.region-service-card p {
  font-size: var(--fs-small);
  color: var(--clr-steel-light);
  margin-bottom: 0;
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-2xl);
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--clr-surface);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  transition: all var(--transition-base);
}

.contact-info-card:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-sm);
}

.contact-info-card .icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-info-card h4 {
  font-size: var(--fs-body);
  margin-bottom: var(--space-xs);
}

.contact-info-card p {
  font-size: var(--fs-small);
  color: var(--clr-steel-light);
  margin-bottom: 0;
}

.map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  height: 300px;
  margin-top: var(--space-xl);
}

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

/* --- Scroll Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* Staggered children animation */
.stagger-children .reveal {
  transition-delay: calc(var(--i, 0) * 0.1s);
}

/* --- Utility --- */
.bg-surface { background-color: var(--clr-surface); }
.bg-dark { background-color: var(--clr-dark); }
.bg-primary { background-color: var(--clr-primary); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-md); }
.mb-2 { margin-bottom: var(--space-xl); }
.mb-3 { margin-bottom: var(--space-2xl); }
.mt-2 { margin-top: var(--space-xl); }
.mt-3 { margin-top: var(--space-2xl); }

/* --- Loading State --- */
.page-transition {
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Responsive Fine-tuning --- */
@media (max-width: 768px) {
  .hero {
    min-height: 90vh;
  }

  .hero h1 {
    font-size: clamp(1.6rem, 6vw, 2.5rem);
  }

  .hero p {
    font-size: var(--fs-body);
  }

  .hero-shapes {
    display: none;
  }

  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-group .btn {
    text-align: center;
    justify-content: center;
  }

  .section {
    padding: var(--space-2xl) 0;
  }

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

  .cta-section {
    padding: var(--space-2xl) 0;
  }
}

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

/* --- Glassmorphism Card Variant --- */
.glass-card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

/* --- Counter Animation --- */
.counter-animated {
  display: inline-block;
}

/* --- About / Corporate Page --- */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
  }
}

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

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

.about-image .experience-badge {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-light));
  color: var(--clr-white);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.experience-badge .number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  display: block;
  line-height: 1;
}

.experience-badge .label {
  font-size: var(--fs-xs);
  font-weight: 500;
}

/* Mission & Vision */
.mv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

@media (max-width: 576px) {
  .mv-grid {
    grid-template-columns: 1fr;
  }
}

.mv-card {
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  background: var(--clr-white);
  box-shadow: var(--shadow-card);
  border-top: 4px solid var(--clr-primary);
  transition: all var(--transition-base);
}

.mv-card:nth-child(2) {
  border-top-color: var(--clr-secondary);
}

.mv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.mv-card .icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-white);
  font-size: 1.4rem;
  margin-bottom: var(--space-lg);
}

.mv-card:nth-child(2) .icon {
  background: linear-gradient(135deg, var(--clr-secondary), var(--clr-secondary-light));
}

.mv-card h3 {
  margin-bottom: var(--space-md);
}

.mv-card p {
  color: var(--clr-steel-light);
  font-size: var(--fs-body);
  margin-bottom: 0;
  line-height: 1.8;
}

/* --- Top Bar (above header) --- */
.top-bar {
  background: var(--clr-dark);
  padding: 0.4rem 0;
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.6);
  display: flex;
  position: relative;
  z-index: 1001;
}

.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.top-bar-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

@media (max-width: 768px) {
  .top-bar {
    display: none;
  }
}

/* Content area for SPA */
#app-content {
  min-height: 100vh;
}

/* Page transition */
#app-content .page-transition {
  animation: fadeIn 0.4s ease forwards;
}