/* ======================================================
   Indian Sunny Builders — Main Stylesheet
   ====================================================== */

/* ---------- CSS Variables ---------- */
:root {
  --clr-primary: #c8811a;
  --clr-primary-dark: #a66510;
  --clr-primary-light: #f5a623;
  --clr-dark: #1a1a1a;
  --clr-dark-2: #2d2d2d;
  --clr-mid: #555;
  --clr-light: #f8f6f2;
  --clr-white: #ffffff;
  --clr-border: #e8e2d8;
  --font-body: 'Inter', sans-serif;
  --font-display: 'Playfair Display', serif;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.18);
  --radius: 12px;
  --radius-sm: 6px;
  --transition: 0.3s ease;
  --max-width: 1240px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-body); color: var(--clr-dark); background: var(--clr-white); line-height: 1.65; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ---------- Container ---------- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 50px;
  font-weight: 600; font-size: 0.95rem;
  transition: all var(--transition); cursor: pointer;
}
.btn-primary {
  background: var(--clr-primary); color: var(--clr-white);
  box-shadow: 0 4px 15px rgba(200,129,26,0.35);
}
.btn-primary:hover { background: var(--clr-primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(200,129,26,0.45); }
.btn-outline {
  background: transparent; color: var(--clr-white);
  border: 2px solid rgba(255,255,255,0.7);
}
.btn-outline:hover { background: rgba(255,255,255,0.15); border-color: var(--clr-white); }
.btn-full { width: 100%; justify-content: center; }

/* ---------- Section Helpers ---------- */
.section-tag {
  display: inline-block; background: rgba(200,129,26,0.1); color: var(--clr-primary);
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 5px 14px; border-radius: 50px; margin-bottom: 14px;
}
.section-title {
  font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.2; color: var(--clr-dark); margin-bottom: 16px;
}
.section-header { text-align: center; margin-bottom: 56px; }
.section-header--light .section-title,
.section-header--light .section-subtitle { color: var(--clr-white); }
.section-header--light .section-tag { background: rgba(255,255,255,0.15); color: var(--clr-white); }
.section-subtitle { font-size: 1.05rem; color: var(--clr-mid); max-width: 580px; margin: 0 auto; }

/* ==================== HEADER ==================== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(26,26,26,0.92); backdrop-filter: blur(10px);
  padding: 0 24px; transition: all var(--transition);
}
.site-header.scrolled { background: rgba(26,26,26,0.98); box-shadow: var(--shadow-md); }
.nav-container {
  max-width: var(--max-width); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 80px;
}
.nav-logo { display: flex; align-items: center; gap: 14px; }
.nav-logo-wrap {
  width: 58px; height: 58px; border-radius: 8px;
  overflow: hidden; flex-shrink: 0;
  background: #0d1b3e;
}
.nav-logo-img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.logo-icon {
  width: 42px; height: 42px; border-radius: 8px;
  background: var(--clr-primary); color: white;
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
}
.logo-text { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; color: var(--clr-white); line-height: 1.2; letter-spacing: 0.02em; }
.logo-text small { font-family: var(--font-body); font-size: 0.72rem; font-weight: 500; color: var(--clr-primary-light); letter-spacing: 0.12em; text-transform: uppercase; display: block; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: rgba(255,255,255,0.85); font-size: 0.9rem; font-weight: 500;
  padding: 8px 14px; border-radius: var(--radius-sm); transition: all var(--transition);
}
.nav-links a:hover { color: var(--clr-white); background: rgba(255,255,255,0.1); }
.nav-cta { background: var(--clr-primary) !important; color: var(--clr-white) !important; padding: 10px 20px !important; border-radius: 50px !important; }
.nav-cta:hover { background: var(--clr-primary-dark) !important; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: white; border-radius: 2px; transition: all var(--transition); }

/* ==================== HERO ==================== */
.hero {
  position: relative; height: 100vh; min-height: 600px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.hero-slides { position: absolute; inset: 0; }
.hero-slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0; transition: opacity 1s ease;
}
.hero-slide.active { opacity: 1; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(26,26,26,0.7) 0%, rgba(26,26,26,0.4) 100%);
}
.hero-content {
  position: relative; z-index: 2; text-align: center;
  padding: 100px 24px 80px; max-width: 820px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(200,129,26,0.25); border: 1px solid rgba(200,129,26,0.5);
  color: var(--clr-primary-light); font-size: 0.8rem; font-weight: 600;
  padding: 6px 16px; border-radius: 50px; margin-bottom: 20px; letter-spacing: 0.05em;
}
.hero-title {
  font-family: var(--font-display); color: var(--clr-white);
  font-size: clamp(2.5rem, 6vw, 4.5rem); line-height: 1.1; margin-bottom: 20px;
}
.hero-title span { color: var(--clr-primary-light); }
.hero-subtitle { color: rgba(255,255,255,0.85); font-size: clamp(1rem, 2vw, 1.2rem); margin-bottom: 36px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.hero-trust {
  display: flex; gap: 24px; justify-content: center; flex-wrap: wrap;
  color: rgba(255,255,255,0.7); font-size: 0.85rem;
}
.hero-trust span { display: flex; align-items: center; gap: 6px; }
.hero-trust i { color: var(--clr-primary-light); }
.hero-dots {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; z-index: 2;
}
.hero-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.4); transition: all var(--transition); cursor: pointer;
}
.hero-dot.active { background: var(--clr-primary-light); width: 22px; border-radius: 4px; }

/* ==================== STATS ==================== */
.stats-bar {
  background: var(--clr-dark); padding: 40px 24px;
}
.stats-container {
  max-width: var(--max-width); margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.stat-item { text-align: center; }
.stat-number {
  display: inline; font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 800; color: var(--clr-primary-light);
  font-family: var(--font-display);
}
.stat-plus { font-size: 1.8rem; font-weight: 700; color: var(--clr-primary); }
.stat-label { display: block; font-size: 0.85rem; color: rgba(255,255,255,0.6); font-weight: 500; margin-top: 4px; }

/* ==================== ABOUT ==================== */
.about-section { padding: 100px 0; background: var(--clr-light); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center;
}
.about-images { position: relative; }
.about-img-main { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); }
.about-img-main img { width: 100%; height: 420px; object-fit: cover; }
.about-img-accent {
  position: absolute; bottom: -30px; right: -30px;
  width: 220px; border-radius: var(--radius-sm); overflow: hidden;
  box-shadow: var(--shadow-lg); border: 4px solid white;
}
.about-img-accent img { width: 100%; height: 160px; object-fit: cover; }
.about-content .section-title { margin-bottom: 20px; }
.about-content p { color: var(--clr-mid); margin-bottom: 16px; }
.about-credentials { display: flex; flex-direction: column; gap: 14px; margin: 28px 0 32px; }
.credential {
  display: flex; align-items: flex-start; gap: 14px;
  background: white; border-radius: var(--radius-sm); padding: 14px 18px;
  box-shadow: var(--shadow-sm);
}
.credential i { color: var(--clr-primary); font-size: 1.2rem; margin-top: 2px; flex-shrink: 0; }
.credential strong { display: block; font-weight: 700; font-size: 0.95rem; margin-bottom: 2px; }
.credential span { font-size: 0.85rem; color: var(--clr-mid); }

/* ==================== SERVICES ==================== */
.services-section { padding: 100px 0; background: white; }
.services-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
}
.service-card {
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: all var(--transition);
  background: white; border: 1px solid var(--clr-border);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-img { position: relative; overflow: hidden; height: 200px; }
.service-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.service-card:hover .service-img img { transform: scale(1.06); }
.service-overlay {
  position: absolute; inset: 0;
  background: rgba(200,129,26,0.75); opacity: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: white; transition: opacity var(--transition);
}
.service-card:hover .service-overlay { opacity: 1; }
.service-body { padding: 20px; }
.service-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.service-body p { font-size: 0.88rem; color: var(--clr-mid); margin-bottom: 14px; line-height: 1.55; }
.service-link {
  font-size: 0.85rem; font-weight: 700; color: var(--clr-primary);
  display: inline-flex; align-items: center; gap: 6px; transition: gap var(--transition);
}
.service-link:hover { gap: 10px; }

/* ==================== PORTFOLIO ==================== */
.portfolio-section { padding: 100px 0; background: var(--clr-light); }
.portfolio-filters { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.filter-btn {
  padding: 9px 22px; border-radius: 50px; border: 2px solid var(--clr-border);
  font-weight: 600; font-size: 0.88rem; color: var(--clr-mid); transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--clr-primary); border-color: var(--clr-primary); color: white;
}
.portfolio-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.portfolio-item {
  position: relative; border-radius: var(--radius); overflow: hidden;
  cursor: pointer; box-shadow: var(--shadow-sm); transition: all var(--transition);
}
.portfolio-item:hover { transform: scale(1.02); box-shadow: var(--shadow-lg); }
.portfolio-item img { width: 100%; height: 280px; object-fit: cover; transition: transform 0.5s ease; }
.portfolio-item:hover img { transform: scale(1.06); }
.portfolio-caption {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(26,26,26,0.85));
  padding: 40px 20px 18px; color: white;
  transform: translateY(5px); transition: transform var(--transition);
}
.portfolio-item:hover .portfolio-caption { transform: translateY(0); }
.portfolio-caption h4 { font-size: 1rem; font-weight: 700; margin-bottom: 2px; }
.portfolio-caption span { font-size: 0.82rem; color: rgba(255,255,255,0.7); }
.portfolio-item.hidden { display: none; }

/* ==================== WHY CHOOSE US ==================== */
.why-section {
  position: relative; padding: 100px 0;
  background-size: cover; background-position: center; background-attachment: fixed;
}
.why-overlay { position: absolute; inset: 0; background: rgba(26,26,26,0.82); }
.why-section .container { position: relative; z-index: 1; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.why-card {
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius); padding: 32px 28px; transition: all var(--transition);
  backdrop-filter: blur(4px);
}
.why-card:hover { background: rgba(200,129,26,0.15); border-color: rgba(200,129,26,0.4); transform: translateY(-4px); }
.why-card i { font-size: 1.8rem; color: var(--clr-primary-light); margin-bottom: 16px; }
.why-card h3 { font-size: 1.05rem; font-weight: 700; color: white; margin-bottom: 10px; }
.why-card p { font-size: 0.9rem; color: rgba(255,255,255,0.7); line-height: 1.6; }

/* ==================== PROCESS ==================== */
.process-section { padding: 100px 0; background: white; }
.process-steps {
  display: flex; align-items: flex-start; flex-wrap: wrap;
  gap: 0; justify-content: center;
}
.process-step {
  flex: 0 0 calc(16.666% - 20px); text-align: center; padding: 0 12px;
  position: relative;
}
.step-number {
  font-size: 3rem; font-weight: 900; color: rgba(200,129,26,0.12);
  font-family: var(--font-display); line-height: 1; margin-bottom: -10px;
}
.step-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--clr-primary); color: white;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; margin: 0 auto 16px; box-shadow: 0 4px 15px rgba(200,129,26,0.3);
}
.process-step h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: 0.83rem; color: var(--clr-mid); line-height: 1.55; }
.process-connector {
  flex: 0 0 0; align-self: center; margin-top: -40px;
  width: 30px; height: 2px; background: var(--clr-border);
  position: relative;
}
.process-connector::after {
  content: ''; position: absolute; right: -6px; top: -4px;
  border: 5px solid transparent; border-left-color: var(--clr-border);
}

/* ==================== VIDEOS ==================== */
.videos-section { padding: 100px 0; background: var(--clr-light); }
.videos-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.video-card {
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-md); background: black;
}
.video-card video { width: 100%; display: block; max-height: 340px; object-fit: cover; }
.video-label {
  background: var(--clr-dark); color: rgba(255,255,255,0.8);
  padding: 12px 18px; font-size: 0.9rem; font-weight: 600;
  display: flex; align-items: center; gap: 8px;
}
.video-label i { color: var(--clr-primary); }

/* ==================== SERVICE AREA ==================== */
.area-section { padding: 100px 0; background: white; }
.area-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.area-content .section-title { margin-bottom: 20px; }
.area-content p { color: var(--clr-mid); margin-bottom: 28px; }
.cities-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 32px;
}
.cities-grid span {
  background: var(--clr-light); border-radius: var(--radius-sm); padding: 8px 10px;
  font-size: 0.85rem; font-weight: 600; text-align: center; border: 1px solid var(--clr-border);
}
.area-map { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); height: 440px; }
.area-map iframe { width: 100%; height: 100%; border: none; }

/* ==================== CONTACT ==================== */
.contact-section { padding: 100px 0; background: var(--clr-dark); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.contact-info .section-tag { background: rgba(200,129,26,0.2); color: var(--clr-primary-light); }
.contact-info .section-title { color: white; }
.contact-info > p { color: rgba(255,255,255,0.7); margin-bottom: 32px; }
.contact-details { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex; align-items: flex-start; gap: 16px;
  color: rgba(255,255,255,0.8);
}
.contact-icon {
  width: 44px; height: 44px; border-radius: 8px;
  background: rgba(200,129,26,0.2); color: var(--clr-primary-light);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 1rem;
}
.contact-item strong { display: block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 2px; color: rgba(255,255,255,0.5); }
.contact-item span { font-size: 0.95rem; }
.contact-item a { color: rgba(255,255,255,0.8); transition: color var(--transition); }
.contact-item a:hover { color: var(--clr-primary-light); }
.contact-form-wrap {
  background: white; border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow-lg);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--clr-dark); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px; border: 2px solid var(--clr-border); border-radius: var(--radius-sm);
  font-size: 0.95rem; transition: border-color var(--transition); outline: none;
  background: white; color: var(--clr-dark);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--clr-primary); }
.form-group input.error,
.form-group select.error,
.form-group textarea.error { border-color: #e53e3e; }
.form-success, .form-error {
  padding: 14px 18px; border-radius: var(--radius-sm);
  font-size: 0.9rem; font-weight: 600; margin-top: 12px;
  display: flex; align-items: center; gap: 10px;
}
.form-success { background: #f0fff4; color: #276749; border: 1px solid #9ae6b4; }
.form-error { background: #fff5f5; color: #c53030; border: 1px solid #fc8181; }

/* ==================== FOOTER ==================== */
.site-footer { background: var(--clr-dark); color: rgba(255,255,255,0.7); }
.footer-top { padding: 72px 0 48px; border-top: 1px solid rgba(255,255,255,0.08); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; }
.footer-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.2rem; font-weight: 800; color: white; margin-bottom: 16px;
}
.footer-logo i { color: var(--clr-primary); font-size: 1.3rem; }
.footer-logo-img { width: 36px; height: 36px; border-radius: 6px; object-fit: cover; flex-shrink: 0; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; margin-bottom: 14px; }
.footer-license { font-size: 0.82rem; color: rgba(255,255,255,0.45); }
.footer-license a { color: var(--clr-primary-light); text-decoration: underline; }
.footer-links h4, .footer-services h4, .footer-contact h4 {
  font-size: 0.85rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: white; margin-bottom: 20px;
}
.footer-links ul, .footer-services ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 0.88rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--clr-primary-light); }
.footer-services li { font-size: 0.88rem; }
.footer-contact p { font-size: 0.88rem; margin-bottom: 10px; display: flex; align-items: flex-start; gap: 10px; }
.footer-contact i { color: var(--clr-primary); margin-top: 2px; flex-shrink: 0; }
.footer-contact a { color: rgba(255,255,255,0.7); transition: color var(--transition); }
.footer-contact a:hover { color: var(--clr-primary-light); }
.footer-bottom { padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.08); text-align: center; }
.footer-bottom p { font-size: 0.82rem; color: rgba(255,255,255,0.4); }

/* ==================== GALLERY SECTION ==================== */
.gallery-section { padding: 100px 0; background: white; }
.gallery-filters { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.gallery-filter-btn {
  padding: 9px 22px; border-radius: 50px; border: 2px solid var(--clr-border);
  font-weight: 600; font-size: 0.88rem; color: var(--clr-mid); transition: all var(--transition);
}
.gallery-filter-btn:hover, .gallery-filter-btn.active {
  background: var(--clr-primary); border-color: var(--clr-primary); color: white;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.gallery-item {
  position: relative; border-radius: var(--radius-sm); overflow: hidden;
  cursor: pointer; aspect-ratio: 1 / 1;
  box-shadow: var(--shadow-sm); transition: all var(--transition);
}
.gallery-item.g-hidden { display: none; }
.gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.45s ease;
  display: block;
}
.gallery-item:hover img { transform: scale(1.08); }

.gallery-overlay {
  position: absolute; inset: 0;
  background: rgba(26,26,26,0.45);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity var(--transition);
}
.gallery-item:hover .gallery-overlay { opacity: 1; }
.gallery-overlay i { font-size: 1.6rem; color: white; }

.gallery-caption {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.78));
  padding: 28px 12px 12px;
  transform: translateY(6px); transition: transform var(--transition);
}
.gallery-item:hover .gallery-caption { transform: translateY(0); }
.gallery-caption h4 { font-size: 0.82rem; font-weight: 700; color: white; margin-bottom: 2px; line-height: 1.3; }
.gallery-caption span { font-size: 0.75rem; color: rgba(255,255,255,0.68); }

.gallery-load-more {
  text-align: center; margin-top: 40px;
}
.btn-outline-dark {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 50px;
  font-weight: 600; font-size: 0.95rem;
  border: 2px solid var(--clr-dark); color: var(--clr-dark);
  transition: all var(--transition); cursor: pointer;
  background: transparent;
}
.btn-outline-dark:hover { background: var(--clr-dark); color: white; }
.btn-outline-dark.hidden { display: none; }

/* ==================== GALLERY LIGHTBOX ==================== */
.gallery-lightbox-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.94);
  z-index: 3000; opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}
.gallery-lightbox-backdrop.glb-active { opacity: 1; pointer-events: all; }

.gallery-lightbox {
  position: fixed; inset: 0; z-index: 3001;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}
.gallery-lightbox.glb-active { opacity: 1; pointer-events: all; }

.glb-content {
  display: flex; flex-direction: column; align-items: center;
  max-width: 92vw; max-height: 92vh;
}
#glb-img {
  max-width: 88vw; max-height: 78vh;
  object-fit: contain; border-radius: var(--radius-sm);
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  transition: opacity 0.2s ease;
}
.glb-caption {
  margin-top: 16px; text-align: center; color: white;
}
.glb-caption h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.glb-caption span { font-size: 0.88rem; color: rgba(255,255,255,0.6); }
.glb-counter {
  margin-top: 8px; font-size: 0.8rem;
  color: rgba(255,255,255,0.4); letter-spacing: 0.05em;
}

.glb-close, .glb-prev, .glb-next {
  position: fixed; background: rgba(255,255,255,0.1); color: white;
  width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; transition: background var(--transition);
  cursor: pointer; border: none; z-index: 3002;
}
.glb-close { top: 22px; right: 22px; font-size: 1.3rem; }
.glb-prev { left: 22px; top: 50%; transform: translateY(-50%); }
.glb-next { right: 22px; top: 50%; transform: translateY(-50%); }
.glb-close:hover, .glb-prev:hover, .glb-next:hover {
  background: var(--clr-primary);
}

/* Gallery responsive */
@media (max-width: 1100px) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .glb-prev { left: 10px; }
  .glb-next { right: 10px; }
}
@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  #glb-img { max-width: 96vw; max-height: 70vh; }
}

/* ==================== LIGHTBOX ==================== */
.lightbox-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.92);
  z-index: 2000; opacity: 0; pointer-events: none; transition: opacity var(--transition);
}
.lightbox-backdrop.active { opacity: 1; pointer-events: all; }
.lightbox {
  position: fixed; inset: 0; z-index: 2001;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity var(--transition);
}
.lightbox.active { opacity: 1; pointer-events: all; }
.lightbox-content { max-width: 90vw; max-height: 90vh; text-align: center; }
.lightbox-content img { max-width: 90vw; max-height: 80vh; object-fit: contain; border-radius: var(--radius-sm); }
.lightbox-caption { color: white; font-size: 0.9rem; margin-top: 10px; opacity: 0.8; }
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: fixed; background: rgba(255,255,255,0.1); color: white;
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; transition: background var(--transition); cursor: pointer;
}
.lightbox-close { top: 20px; right: 20px; font-size: 1.6rem; width: 46px; height: 46px; }
.lightbox-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 20px; top: 50%; transform: translateY(-50%); }
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { background: var(--clr-primary); }

/* ==================== BACK TO TOP ==================== */
.back-to-top {
  position: fixed; bottom: 28px; right: 28px; z-index: 999;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--clr-primary); color: white;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); opacity: 0; pointer-events: none;
  transition: all var(--transition);
}
.back-to-top.visible { opacity: 1; pointer-events: all; }
.back-to-top:hover { background: var(--clr-primary-dark); transform: translateY(-3px); }

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1100px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 900px) {
  .about-grid, .area-grid, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-img-accent { right: 0; }
  .stats-container { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { gap: 24px; }
  .process-step { flex: 0 0 calc(33% - 24px); }
  .process-connector { display: none; }
  .videos-grid { grid-template-columns: 1fr; }
  .cities-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .nav-links { display: none; flex-direction: column; gap: 0; position: fixed; top: 72px; left: 0; right: 0; background: rgba(26,26,26,0.98); padding: 20px; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 16px; border-radius: var(--radius-sm); font-size: 1rem; }
  .nav-toggle { display: flex; }
  .hero-actions { flex-direction: column; align-items: center; }
  .services-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .stats-container { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .process-step { flex: 0 0 calc(50% - 24px); }
  .cities-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-form-wrap { padding: 24px; }
  .area-map { height: 280px; }
}