/* ============================================================
   AVCare - Premium Audio Visual Services
   Stylesheet
   Theme: Dark Luxury with Gold Accents
   ============================================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Poppins:wght@300;400;500;600;700&display=swap');

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Colors */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #111118;
  --color-bg-tertiary: #16161f;
  --color-bg-card: #1a1a25;
  --color-bg-card-hover: #1f1f2e;

  --color-gold: #c9a84c;
  --color-gold-light: #e0c06a;
  --color-gold-dark: #a88a30;
  --color-gold-muted: rgba(201, 168, 76, 0.15);

  --color-deep-blue: #1a2a5e;
  --color-deep-blue-light: #2a3d7a;

  --color-text-primary: #f0ece4;
  --color-text-secondary: #a8a4a0;
  --color-text-muted: #6b6860;

  --color-border: rgba(201, 168, 76, 0.12);
  --color-border-hover: rgba(201, 168, 76, 0.35);

  --color-overlay: rgba(10, 10, 15, 0.85);
  --color-overlay-dark: rgba(10, 10, 15, 0.92);

  /* Typography */
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Poppins', 'Segoe UI', sans-serif;

  /* Spacing */
  --section-padding: 100px 0;
  --container-max: 1200px;
  --container-padding: 0 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s ease;
  --transition-slow: 0.5s ease;
  --transition-smooth: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;

  /* Shadows */
  --shadow-card: 0 4px 30px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(201, 168, 76, 0.07);
  --shadow-gold-glow: 0 0 40px rgba(201, 168, 76, 0.15);
}

/* --- 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);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

button {
  cursor: pointer;
  border: none;
  outline: none;
  font-family: var(--font-body);
}

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

.section-header {
  text-align: center;
  margin-bottom: 70px;
}

.section-subtitle {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 16px;
  display: block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: 20px;
}

.section-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  margin: 0 auto 20px;
  border-radius: 2px;
}

.section-description {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* --- Scroll Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

/* --- Preloader --- */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader-inner {
  text-align: center;
}

.preloader-logo {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  animation: preloaderPulse 1.5s ease-in-out infinite;
}

.preloader-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.preloader-bar {
  width: 120px;
  height: 2px;
  background: var(--color-bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto;
}

.preloader-bar::after {
  content: '';
  display: block;
  width: 40%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  border-radius: 2px;
  animation: preloaderSlide 1.2s ease-in-out infinite;
}

@keyframes preloaderPulse {
  0%, 100% { opacity: 0.5; transform: scale(0.95); }
  50% { opacity: 1; transform: scale(1); }
}

@keyframes preloaderSlide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 20px 0;
  z-index: 1000;
  transition: background var(--transition-base),
              padding var(--transition-base),
              box-shadow var(--transition-base);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 12px 0;
  box-shadow: 0 2px 30px rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid var(--color-border);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  transition: transform var(--transition-base);
}

.nav-brand:hover .nav-logo {
  transform: scale(1.05);
}

.nav-brand-name {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: 1px;
}

.nav-brand-name span {
  color: var(--color-gold);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 400;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-gold);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 1.5px;
  background: var(--color-gold);
  border-radius: 2px;
  transition: transform var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 6px;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.3) saturate(0.7);
}

/* Animated gradient overlay */
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: linear-gradient(
    180deg,
    rgba(10, 10, 15, 0.6) 0%,
    rgba(10, 10, 15, 0.4) 40%,
    rgba(10, 10, 15, 0.7) 80%,
    rgba(10, 10, 15, 1) 100%
  );
}

.hero-content {
  text-align: center;
  padding: 0 24px;
  max-width: 850px;
}

.hero-logo {
  width: 110px;
  height: 110px;
  margin: 0 auto 30px;
  animation: heroLogoFloat 4s ease-in-out infinite;
}

.hero-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 4px 20px rgba(201, 168, 76, 0.25));
}

@keyframes heroLogoFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-company-name {
  font-family: var(--font-heading);
  font-size: 4.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 4px;
  line-height: 1.1;
  margin-bottom: 10px;
}

.hero-company-name span {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 300;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 34px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-bg-primary);
}

.btn-primary:hover {
  box-shadow: var(--shadow-gold-glow);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-gold);
  border: 1px solid var(--color-gold);
}

.btn-outline:hover {
  background: var(--color-gold-muted);
  transform: translateY(-2px);
}

/* Hero scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: scrollBounce 2s ease-in-out infinite;
}

.hero-scroll i {
  font-size: 1rem;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* Decorative particles */
.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--color-gold);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  0% {
    opacity: 0;
    transform: translateY(100vh) scale(0);
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.2;
  }
  100% {
    opacity: 0;
    transform: translateY(-20vh) scale(1);
  }
}

/* ============================================================
   SERVICES SECTION
   ============================================================ */
.services {
  padding: var(--section-padding);
  background: var(--color-bg-secondary);
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-hover), transparent);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-gold-muted), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card-hover);
  background: var(--color-bg-card-hover);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  position: relative;
  width: 64px;
  height: 64px;
  margin: 0 auto 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-gold-muted), transparent);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.service-icon i {
  font-size: 1.6rem;
  color: var(--color-gold);
  transition: transform var(--transition-base);
}

.service-card:hover .service-icon {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  box-shadow: var(--shadow-gold-glow);
}

.service-card:hover .service-icon i {
  color: var(--color-bg-primary);
  transform: scale(1.1);
}

.service-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 10px;
  position: relative;
}

.service-description {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  position: relative;
}

/* ============================================================
   GALLERY PREVIEW (Homepage)
   ============================================================ */
.gallery-preview {
  padding: var(--section-padding);
  background: var(--color-bg-primary);
  position: relative;
}

.gallery-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 40px;
}

.gallery-preview-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  cursor: pointer;
}

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

.gallery-preview-item-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 15, 0.75) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  align-items: flex-end;
  padding: 20px;
}

.gallery-preview-item-overlay span {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

.gallery-preview-item:hover img {
  transform: scale(1.08);
  filter: brightness(0.7);
}

.gallery-preview-item:hover .gallery-preview-item-overlay {
  opacity: 1;
}

.gallery-preview-cta {
  text-align: center;
  padding-top: 10px;
}

/* ============================================================
   GALLERY PAGE
   ============================================================ */
.gallery-page {
  padding-top: 0;
}

/* Gallery page hero */
.gallery-page-hero {
  padding: 140px 0 60px;
  background: var(--color-bg-secondary);
  text-align: center;
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

.gallery-page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at top center, rgba(201, 168, 76, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.gallery-page-hero-content {
  position: relative;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
  font-size: 0.85rem;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.breadcrumb i {
  font-size: 0.6rem;
  color: var(--color-text-muted);
}

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

/* Gallery filter bar */
.gallery-filters {
  padding: 30px 0;
  background: var(--color-bg-primary);
  position: sticky;
  top: 64px;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
}

.filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.filter-btn.active {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-bg-primary);
  border-color: var(--color-gold);
}

/* Gallery page content */
.gallery-page-content {
  padding: 50px 0 80px;
  background: var(--color-bg-primary);
  min-height: 50vh;
}

/* Masonry grid */
.gallery-masonry {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

/* Gallery card */
.gallery-card {
  opacity: 0;
  transform: translateY(30px) scale(0.97);
  animation: galleryCardIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.gallery-card.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@keyframes galleryCardIn {
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.gallery-card-inner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.gallery-card-inner:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card-hover);
}

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

.gallery-card-inner:hover img {
  transform: scale(1.06);
  filter: brightness(0.6);
}

.gallery-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, transparent 30%, rgba(10, 10, 15, 0.85) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 24px;
}

.gallery-card-inner:hover .gallery-card-overlay {
  opacity: 1;
}

.gallery-card-info {
  flex: 1;
}

.gallery-card-category {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-gold);
  margin-bottom: 6px;
}

.gallery-card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-text-primary);
  line-height: 1.3;
}

.gallery-card-expand {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201, 168, 76, 0.2);
  border: 1px solid var(--color-border-hover);
  border-radius: 50%;
  color: var(--color-gold);
  font-size: 1rem;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.gallery-card-expand:hover {
  background: var(--color-gold);
  color: var(--color-bg-primary);
}

/* Gallery empty state */
.gallery-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  text-align: center;
  color: var(--color-text-muted);
}

.gallery-empty i {
  font-size: 3.5rem;
  color: var(--color-gold-muted);
  margin-bottom: 20px;
}

.gallery-empty h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}

.gallery-empty p {
  font-size: 0.95rem;
  line-height: 1.7;
}

.gallery-empty code {
  color: var(--color-gold);
  background: var(--color-gold-muted);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}

/* --- Lightbox --- */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-overlay-dark);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  backdrop-filter: blur(10px);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 85vh;
  transform: scale(0.9);
  transition: transform var(--transition-smooth);
}

.lightbox.active .lightbox-content {
  transform: scale(1);
}

.lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: none;
  color: var(--color-text-primary);
  font-size: 1.5rem;
  padding: 8px;
  transition: color var(--transition-fast);
}

.lightbox-close:hover {
  color: var(--color-gold);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(201, 168, 76, 0.15);
  border: 1px solid var(--color-border-hover);
  color: var(--color-gold);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all var(--transition-fast);
}

.lightbox-nav:hover {
  background: var(--color-gold);
  color: var(--color-bg-primary);
}

.lightbox-prev { left: -70px; }
.lightbox-next { right: -70px; }

.lightbox-counter {
  text-align: center;
  margin-top: 16px;
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 2px;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about {
  padding: var(--section-padding);
  background: var(--color-bg-secondary);
  position: relative;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-hover), transparent);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

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

.about-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 1px solid var(--color-border-hover);
  border-radius: var(--radius-lg);
}

.about-image-accent {
  position: absolute;
  top: -10px;
  right: -10px;
  width: 100%;
  height: 100%;
  border: 1px solid var(--color-gold);
  border-radius: var(--radius-lg);
  opacity: 0.2;
  z-index: -1;
}

.about-content {
  padding-right: 20px;
}

.about-content .section-subtitle {
  text-align: left;
}

.about-content .section-title {
  text-align: left;
  font-size: 2.4rem;
}

.about-content .section-divider {
  margin: 0 0 20px;
}

.about-text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 18px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 30px;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.about-feature:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-card-hover);
}

.about-feature i {
  color: var(--color-gold);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.about-feature span {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact {
  padding: var(--section-padding);
  background: var(--color-bg-primary);
  position: relative;
}

.contact-grid {
  display: flex;
  justify-content: center;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.contact-card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-card-hover);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gold-muted);
  border-radius: var(--radius-md);
}

.contact-card-icon i {
  font-size: 1.2rem;
  color: var(--color-gold);
}

.contact-card-content h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.contact-card-content p,
.contact-card-content a {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.contact-card-content a:hover {
  color: var(--color-gold);
}

/* WhatsApp button */
.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: linear-gradient(135deg, #25d366, #128c7e);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  margin-top: 10px;
  text-transform: uppercase;
}

.btn-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp i {
  font-size: 1.2rem;
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  position: relative;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px var(--color-gold-muted);
}

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

.btn-submit {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-bg-primary);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.btn-submit:hover {
  box-shadow: var(--shadow-gold-glow);
  transform: translateY(-2px);
}

/* Map placeholder */
.contact-map {
  margin-top: 50px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  height: 300px;
  background: var(--color-bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.contact-map iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: grayscale(0.8) brightness(0.6) contrast(1.2);
  transition: filter var(--transition-base);
}

.contact-map:hover iframe {
  filter: grayscale(0.3) brightness(0.8) contrast(1.1);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-bg-tertiary);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 50px;
}

.footer-brand .nav-brand {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-bg-primary);
  transform: translateY(-3px);
}

.footer-column h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}

.footer-column h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--color-gold);
  border-radius: 2px;
}

.footer-column ul li {
  margin-bottom: 10px;
}

.footer-column ul li a {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-column ul li a:hover {
  color: var(--color-gold);
  padding-left: 6px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-contact-item i {
  color: var(--color-gold);
  margin-top: 3px;
  font-size: 0.9rem;
}

.footer-contact-item span {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
}

.footer-bottom a {
  color: var(--color-gold);
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-bg-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 500;
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.3);
}

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

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-gold-glow);
}

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

/* Tablets & smaller desktops */
@media (max-width: 1024px) {
  .section-title {
    font-size: 2.3rem;
  }

  .hero-company-name {
    font-size: 3.5rem;
  }

  .about-grid {
    gap: 40px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
}

/* Tablets */
@media (max-width: 768px) {
  :root {
    --section-padding: 70px 0;
  }

  /* Navigation mobile */
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-secondary);
    flex-direction: column;
    align-items: flex-start;
    padding: 90px 30px 40px;
    gap: 4px;
    transition: right var(--transition-smooth);
    border-left: 1px solid var(--color-border);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
  }

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

  .nav-link {
    width: 100%;
    padding: 14px 16px;
    font-size: 0.95rem;
  }

  .nav-link::after {
    left: 16px;
    transform: scaleX(0);
    transform-origin: left;
    bottom: 8px;
  }

  .nav-link:hover::after,
  .nav-link.active::after {
    transform: scaleX(1);
  }

  /* Hero */
  .hero-company-name {
    font-size: 2.8rem;
    letter-spacing: 2px;
  }

  .hero-tagline {
    font-size: 0.85rem;
    letter-spacing: 3px;
  }

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

  .hero-logo {
    width: 80px;
    height: 80px;
  }

  .section-title {
    font-size: 2rem;
  }

  .section-header {
    margin-bottom: 50px;
  }

  /* About */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-content {
    padding-right: 0;
    order: 1;
  }

  .about-image {
    order: 2;
  }

  /* Contact */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  /* Gallery */
  .gallery-preview-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .gallery-masonry {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 14px;
  }

  .gallery-page-hero {
    padding: 120px 0 50px;
  }

  /* Services */
  .services-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
  }
}

/* Mobile phones */
@media (max-width: 480px) {
  :root {
    --section-padding: 60px 0;
  }

  .hero-company-name {
    font-size: 2.2rem;
  }

  .hero-tagline {
    font-size: 0.75rem;
    letter-spacing: 2px;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .section-title {
    font-size: 1.8rem;
  }

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

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

  .gallery-preview-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .gallery-masonry {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .filter-bar {
    gap: 6px;
  }

  .filter-btn {
    padding: 8px 16px;
    font-size: 0.78rem;
  }

  .gallery-page-hero {
    padding: 100px 0 40px;
  }

  .footer-social {
    justify-content: center;
  }

  .lightbox-prev { left: 5px; }
  .lightbox-next { right: 5px; }

  .lightbox-nav {
    width: 38px;
    height: 38px;
  }
}