/* ==========================================================================
   Gold Jewellery Cluster Trichy Council - Design System & Stylesheet
   Luxury Aesthetic: Deep Metallic Obsidian & Refined Radiant Gold
   Fonts: Playfair Display (Serif) & Poppins (Sans-Serif)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;0,800;0,900;1,400;1,600&family=Poppins:wght@300;400;500;600;700&display=swap');

/* --- Custom CSS Variables --- */
:root {
  /* Color Palette */
  --primary-gold: #D4AF37;
  --gold-metallic: #E6C200;
  --dark-gold: #AA7C11;
  --light-gold: #F4E8C1;
  --gold-accent: #FFDF00;
  --gold-glow: rgba(212, 175, 55, 0.35);
  --gold-gradient: linear-gradient(135deg, #BF953F 0%, #FCF6BA 25%, #B38728 50%, #FBF5B7 75%, #AA771C 100%);
  --gold-gradient-soft: linear-gradient(135deg, rgba(212, 175, 55, 0.2) 0%, rgba(244, 232, 193, 0.05) 100%);

  /* Neutrals & Dark Theme */
  --bg-dark: #0A0A0A;
  --bg-card: #141414;
  --bg-elevated: #1F1F1F;
  --bg-glass: rgba(20, 20, 20, 0.75);
  --border-dark: #262626;
  --border-gold: rgba(212, 175, 55, 0.3);

  /* Typography Colors */
  --text-white: #FFFFFF;
  --text-muted: #A1A1AA;
  --text-dim: #71717A;
  --text-gold: #D4AF37;

  /* Typography Setup */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout & Spacing */
  --container-max: 1320px;
  --header-height: 90px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Elevation & Shadows */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-gold: 0 10px 30px rgba(212, 175, 55, 0.2);
  --shadow-glass: 0 20px 40px rgba(0, 0, 0, 0.6);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: initial; /* Lenis handles smooth scrolling */
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

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

button {
  cursor: pointer;
}

/* --- Typography Utilities --- */
h1, h2, h3, h4, h5, h6, .font-serif {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.text-gold {
  color: var(--primary-gold);
}

.text-gradient-gold {
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-subtitle {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--primary-gold);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-subtitle::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--primary-gold);
  display: inline-block;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 1.25rem;
  color: var(--text-white);
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 680px;
}

.text-center { text-align: center; }
.text-center .section-subtitle { justify-content: center; }
.text-center .section-subtitle::before { display: none; }

/* --- Container & Layout --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section-padding {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.95rem 2.2rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-gold {
  background: var(--gold-gradient);
  color: #0A0A0A;
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-gold:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(212, 175, 55, 0.5);
  color: #000;
}

.btn-outline-gold {
  border: 1px solid var(--primary-gold);
  color: var(--primary-gold);
  background: rgba(212, 175, 55, 0.05);
}

.btn-outline-gold:hover {
  background: var(--primary-gold);
  color: #0A0A0A;
  box-shadow: var(--shadow-gold);
  transform: translateY(-3px);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-white);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: var(--primary-gold);
  color: var(--primary-gold);
  transform: translateY(-3px);
}

.btn-sm {
  padding: 0.6rem 1.4rem;
  font-size: 0.85rem;
}

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

.site-header.scrolled {
  height: 75px;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-gold);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo img {
  height: 48px;
  width: auto;
  transition: var(--transition-fast);
}

.brand-title {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: 0.5px;
  line-height: 1.1;
}

.brand-tagline {
  font-size: 0.68rem;
  color: var(--primary-gold);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold-gradient);
  transition: var(--transition-smooth);
}

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

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

.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--primary-gold);
  background: none;
  padding: 0.5rem;
}

/* --- Hero Banner (Common Page Header) --- */
.page-hero {
  position: relative;
  padding-top: calc(var(--header-height) + 5rem);
  padding-bottom: 5rem;
  background: radial-gradient(circle at 50% 20%, rgba(212, 175, 55, 0.15) 0%, rgba(10, 10, 10, 1) 70%);
  border-bottom: 1px solid var(--border-dark);
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23d4af37' fill-opacity='0.03' fill-rule='evenodd'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.6;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

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

.breadcrumb i {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* --- Cards Design System --- */
.gold-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.gold-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gold-gradient);
  opacity: 0;
  transition: var(--transition-smooth);
}

.gold-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-glass);
}

.gold-card:hover::after {
  opacity: 1;
}

/* --- Counter / Metrics Section --- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.metric-card {
  background: rgba(20, 20, 20, 0.8);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: var(--transition-smooth);
  backdrop-filter: blur(10px);
}

.metric-card:hover {
  border-color: var(--primary-gold);
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(212, 175, 55, 0.15);
}

.metric-number {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-gold);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.metric-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

/* --- Form Components --- */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-white);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  background: rgba(30, 30, 30, 0.7);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.25rem;
  color: var(--text-white);
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary-gold);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
  background: rgba(40, 40, 40, 0.9);
}

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

/* --- Filters & Tabs --- */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.65rem 1.6rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-dark);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--gold-gradient);
  color: #0A0A0A;
  border-color: transparent;
  box-shadow: var(--shadow-gold);
}

/* --- Modals / Lightbox --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  width: 90%;
  max-width: 650px;
  padding: 2.5rem;
  position: relative;
  transform: scale(0.9);
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-glass);
}

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

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: 1.4rem;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.modal-close:hover {
  color: var(--primary-gold);
  transform: rotate(90deg);
}

/* --- Footer --- */
.site-footer {
  background: #050505;
  border-top: 1px solid var(--border-dark);
  padding-top: 5rem;
  padding-bottom: 2rem;
  position: relative;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 1.25rem;
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-title {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary-gold);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1.5rem;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.92rem;
  transition: var(--transition-fast);
}

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

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-dark);
  background: var(--bg-card);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.social-icon:hover {
  background: var(--gold-gradient);
  color: #0A0A0A;
  border-color: transparent;
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* --- Toast Notification --- */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 3000;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--primary-gold);
  border-radius: var(--radius-sm);
  padding: 1rem 1.5rem;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-gold);
  animation: slideInRight 0.4s ease forwards;
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* --- Responsive Breakpoints --- */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 280px;
    height: calc(100vh - var(--header-height));
    background: rgba(12, 12, 12, 0.98);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--border-gold);
    flex-direction: column;
    align-items: flex-start;
    padding: 2.5rem 2rem;
    gap: 1.5rem;
    transition: var(--transition-smooth);
  }

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

  .mobile-toggle {
    display: block;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}