/* ========================================
   TesterInvest OÜ - Main Stylesheet
   Modern electrical company website
   ======================================== */

/* === CSS Variables === */
:root {
  /* Colors */
  --color-primary: #0d1b2a;
  --color-primary-dark: #060f18;
  --color-secondary: #1b2838;
  --color-accent: #0077cc;
  --color-accent-light: #00a8e8;
  --color-accent-dark: #005fa3;
  --color-gold: #f0a500;
  --color-gold-light: #fbbf24;
  --color-white: #ffffff;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-text-inverse: #f1f5f9;
  --color-success: #22c55e;
  --color-error: #ef4444;

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Radii */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

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

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

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

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--color-accent-light);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: clamp(1.1rem, 2.5vw, 1.35rem); }

ul { list-style: none; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all var(--transition-base);
  background: transparent;
}

.header.scrolled {
  background: rgba(13, 27, 42, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

/* Top bar with contact info */
.header-topbar {
  background: rgba(0,0,0,0.2);
  padding: 6px 0;
  font-size: 0.8rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-topbar .container {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-lg);
}

.header-topbar a {
  color: var(--color-gray-300);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.header-topbar a:hover {
  color: var(--color-accent-light);
}

.header-topbar svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* Main header bar */
.header-main {
  height: var(--header-height);
}

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

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.header-logo span {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.5px;
}

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

.nav-menu a {
  color: var(--color-text-inverse);
  font-size: 0.9rem;
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-light);
  transition: width var(--transition-base);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-menu a:hover {
  color: var(--color-accent-light);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  gap: 2px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 2px;
}

.lang-btn {
  background: none;
  border: none;
  color: var(--color-text-inverse);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  opacity: 0.6;
}

.lang-btn:hover {
  opacity: 0.9;
}

.lang-btn.active {
  background: var(--color-accent);
  opacity: 1;
}

/* Mobile Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  z-index: 1001;
}

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

.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);
}

/* === Hero Section === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-primary-dark) 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(0, 119, 204, 0.15) 0%, transparent 60%),
    linear-gradient(180deg, rgba(13,27,42,0.3) 0%, rgba(13,27,42,0.7) 100%);
}

/* SVG dot pattern */
.hero-pattern {
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: 0.05;
  background-image: radial-gradient(circle, var(--color-accent-light) 1px, transparent 1px);
  background-size: 30px 30px;
}

.hero .container {
  position: relative;
  z-index: 3;
  padding-top: var(--header-height);
}

.hero-content {
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(0, 119, 204, 0.15);
  border: 1px solid rgba(0, 168, 232, 0.3);
  border-radius: var(--radius-full);
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
  color: var(--color-accent-light);
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.5px;
}

.hero-badge svg {
  width: 16px;
  height: 16px;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.5px;
}

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

.hero-text {
  font-size: 1.2rem;
  color: var(--color-gray-300);
  margin-bottom: var(--spacing-2xl);
  max-width: 550px;
  line-height: 1.7;
}

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

.hero-stats {
  display: flex;
  gap: var(--spacing-3xl);
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid rgba(255,255,255,0.1);
}

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

.hero-stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent-light);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: var(--color-gray-400);
  margin-top: var(--spacing-xs);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  text-align: center;
  color: var(--color-gray-400);
  font-size: 0.8rem;
  animation: bounce 2s infinite;
}

.scroll-indicator svg {
  display: block;
  margin: var(--spacing-xs) auto 0;
  width: 24px;
  height: 24px;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

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

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

.btn-primary:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 119, 204, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.3);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
  color: var(--color-white);
  transform: translateY(-2px);
}

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

.btn-gold:hover {
  background: var(--color-gold-light);
  border-color: var(--color-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(240, 165, 0, 0.35);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.05rem;
}

/* === Sections === */
.section {
  padding: var(--spacing-4xl) 0;
}

.section-light {
  background: var(--color-gray-50);
}

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

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--color-white);
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: var(--spacing-md);
}

.section-tag::before,
.section-tag::after {
  content: '';
  width: 30px;
  height: 2px;
  background: var(--color-accent);
}

.section-header h2 {
  margin-bottom: var(--spacing-md);
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-dark .section-header p {
  color: var(--color-gray-400);
}

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

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

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

.service-card.featured {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-color: transparent;
  color: var(--color-text-inverse);
}

.service-card.featured h3 {
  color: var(--color-white);
}

.service-card.featured p {
  color: var(--color-gray-300);
}

.service-card.featured::before {
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  transform: scaleX(1);
}

.service-card.featured .service-badge {
  display: inline-block;
}

.service-badge {
  display: none;
  background: var(--color-gold);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  background: rgba(0, 119, 204, 0.1);
  color: var(--color-accent);
}

.service-card.featured .service-icon {
  background: rgba(0, 168, 232, 0.2);
  color: var(--color-accent-light);
}

.service-icon svg {
  width: 28px;
  height: 28px;
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-md);
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

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

.about-text h2 {
  margin-bottom: var(--spacing-lg);
}

.about-text p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
  font-size: 1.05rem;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.about-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 500;
}

.about-feature svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
}

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

.stat-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-100);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: var(--spacing-xs);
}

/* === Other Services === */
.other-services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.other-service-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-base);
}

.other-service-card:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

.other-service-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
}

.other-service-card h4 {
  font-size: 1rem;
  margin-bottom: var(--spacing-sm);
}

.other-service-card p {
  font-size: 0.875rem;
  color: var(--color-gray-400);
}

.other-service-price {
  font-family: var(--font-heading);
  font-size: 1rem !important;
  font-weight: 700;
  color: var(--color-gold-light) !important;
  margin-top: var(--spacing-sm);
}

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

.project-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--color-gray-200);
}

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

.project-image {
  position: relative;
  height: 220px;
  overflow: hidden;
}

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

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

.project-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(13,27,42,0.7) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  align-items: flex-end;
  padding: var(--spacing-md);
}

.project-card:hover .project-image-overlay {
  opacity: 1;
}

.project-category {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.project-info {
  padding: var(--spacing-lg);
}

.project-info h3 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
}

.project-info p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.section-footer {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

/* === Contact Section === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
}

.contact-info h3 {
  margin-bottom: var(--spacing-xl);
}

.office-card {
  background: var(--color-gray-50);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  border: 1px solid var(--color-gray-200);
}

.office-card h4 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.office-card h4 svg {
  width: 20px;
  height: 20px;
}

.office-detail {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.office-detail a {
  color: var(--color-text-light);
  text-decoration: none;
  transition: color 0.3s ease;
}

.office-detail a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.company-info a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

.company-info a:hover {
  color: var(--color-gold);
  text-decoration: underline;
}

.office-detail svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 2px;
}

.company-info {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-gray-200);
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.company-info p {
  margin-bottom: var(--spacing-xs);
}

/* Contact Form */
.contact-form-wrapper {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-200);
}

.contact-form-wrapper h3 {
  margin-bottom: var(--spacing-xl);
}

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

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-white);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 119, 204, 0.15);
}

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

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

.form-group .error-text {
  color: var(--color-error);
  font-size: 0.8rem;
  margin-top: var(--spacing-xs);
}

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

/* Form messages */
.form-message {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
  display: none;
}

.form-message.success {
  display: block;
  background: rgba(34, 197, 94, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-message.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* === Footer === */
.footer {
  background: var(--color-primary-dark);
  color: var(--color-gray-400);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-brand p {
  margin-top: var(--spacing-md);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-brand img {
  height: 40px;
  filter: brightness(0) invert(1);
  opacity: 0.8;
}

.footer h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: var(--spacing-lg);
}

.footer-links a {
  display: block;
  color: var(--color-gray-400);
  padding: var(--spacing-xs) 0;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent-light);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 2px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

/* === Gallery / Lightbox === */
.gallery-filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
}

.filter-btn {
  background: none;
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-full);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.filter-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
}

.lightbox.active {
  display: flex;
}

.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-lg);
}

.lightbox-close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 2rem;
  cursor: pointer;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.1);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: none;
  color: var(--color-white);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.lightbox-nav:hover {
  background: rgba(255,255,255,0.2);
}

.lightbox-prev {
  left: var(--spacing-lg);
}

.lightbox-next {
  right: var(--spacing-lg);
}

/* === Page Header (for sub-pages) === */
.page-header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  padding: calc(var(--header-height) + var(--spacing-3xl)) 0 var(--spacing-3xl);
  text-align: center;
}

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

.page-header p {
  color: var(--color-gray-400);
  font-size: 1.1rem;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--color-gray-400);
}

.breadcrumb span {
  color: var(--color-gray-500);
}

.breadcrumb .current {
  color: var(--color-accent-light);
}

/* === Animations === */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate="fade-up"].animated {
  opacity: 1;
  transform: translateY(0);
}

[data-animate="fade-right"] {
  transform: translateX(-30px);
}

[data-animate="fade-right"].animated {
  opacity: 1;
  transform: translateX(0);
}

[data-animate="fade-left"] {
  transform: translateX(30px);
}

[data-animate="fade-left"].animated {
  opacity: 1;
  transform: translateX(0);
}

[data-animate="zoom-in"] {
  transform: scale(0.9);
}

[data-animate="zoom-in"].animated {
  opacity: 1;
  transform: scale(1);
}

.delay-1 { transition-delay: 0.1s !important; }
.delay-2 { transition-delay: 0.2s !important; }
.delay-3 { transition-delay: 0.3s !important; }
.delay-4 { transition-delay: 0.4s !important; }
.delay-5 { transition-delay: 0.5s !important; }

/* === Loading spinner === */
.loading {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* === Responsive === */

/* Tablet */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

  .hero-stats {
    gap: var(--spacing-2xl);
  }

  .nav-menu {
    gap: var(--spacing-md);
  }

  .nav-menu a {
    font-size: 0.85rem;
  }
}

/* Mobile landscape */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .header-topbar {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-primary);
    flex-direction: column;
    align-items: flex-start;
    padding: calc(var(--header-height) + var(--spacing-xl)) var(--spacing-xl) var(--spacing-xl);
    transition: right var(--transition-base);
    box-shadow: -5px 0 20px rgba(0,0,0,0.3);
    gap: var(--spacing-sm);
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu a {
    font-size: 1.1rem;
    padding: var(--spacing-md) 0;
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }

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

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

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

  .other-services-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-stats {
    flex-wrap: wrap;
    gap: var(--spacing-xl);
  }

  .hero-stat {
    flex: 1;
    min-width: 100px;
  }

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

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

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

  .scroll-indicator {
    display: none;
  }
}

/* Mobile portrait */
@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.75rem;
  }

  .hero-text {
    font-size: 1rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
    text-align: center;
  }

  .hero-stat-number {
    font-size: 2rem;
  }

  .stat-number {
    font-size: 2rem;
  }

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

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

/* === Project Detail Modal === */
.project-detail-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
  align-items: center;
  justify-content: center;
}

.project-detail-modal.active {
  display: flex;
}

.project-detail-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  cursor: pointer;
}

.project-detail-content {
  position: relative;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  max-width: 900px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  z-index: 1;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from { opacity: 0; transform: translateY(30px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.project-detail-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s;
}

.project-detail-close:hover {
  background: rgba(0, 0, 0, 0.8);
}

.project-detail-main-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.project-detail-main-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.3s ease;
}

.project-detail-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  transition: background 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-detail-nav:hover {
  background: rgba(0, 0, 0, 0.8);
}

.project-detail-nav.prev { left: 1rem; }
.project-detail-nav.next { right: 1rem; }

.project-detail-info {
  padding: var(--spacing-xl);
}

.project-detail-info h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.project-detail-info p {
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.project-detail-thumbs {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.project-detail-thumb {
  width: 80px;
  height: 60px;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 0.3s, opacity 0.3s;
  opacity: 0.6;
}

.project-detail-thumb:hover {
  opacity: 0.9;
}

.project-detail-thumb.active {
  border-color: var(--color-accent);
  opacity: 1;
}

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

@media (max-width: 768px) {
  .project-detail-content {
    width: 95%;
    max-height: 95vh;
  }

  .project-detail-main-image {
    aspect-ratio: 16 / 12;
  }

  .project-detail-info {
    padding: var(--spacing-lg);
  }

  .project-detail-thumb {
    width: 60px;
    height: 45px;
  }
}

/* === Utility === */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-gold { color: var(--color-gold); }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.hidden { display: none !important; }