/* ============================================
   AurumVault Precious Metals - Landing Page Styles
   ============================================ */

/* === Custom Properties === */
:root {
  --bg-primary: #0B0E14;
  --bg-secondary: #12161F;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --gold-primary: #D4AF37;
  --gold-light: #E6C687;
  --gold-bright: #F5E6B8;
  --gold-dark: #B8962E;
  --text-primary: #F5F5F5;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --green: #22C55E;
  --red: #EF4444;
  --border-gold: rgba(212, 175, 55, 0.15);
  --border-gold-hover: rgba(212, 175, 55, 0.4);
  --glass-bg: rgba(18, 22, 31, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-gold: 0 0 30px rgba(212, 175, 55, 0.1);
  --radius-card: 16px;
  --radius-btn: 8px;
  --max-width: 1200px;
  --section-padding: 100px 0;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul { list-style: none; }
img { max-width: 100%; display: block; }

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

/* === Typography === */
.font-serif {
  font-family: 'Playfair Display', Georgia, serif;
}

.font-mono {
  font-family: 'Inter', monospace;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.section-header .gold-text {
  background: linear-gradient(135deg, var(--gold-primary), var(--gold-bright), var(--gold-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.section-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
  margin: 16px auto 0;
}

/* === Ticker Bar === */
.ticker-bar {
  background: linear-gradient(90deg, #080A10, #0F1318, #080A10);
  border-bottom: 1px solid rgba(212, 175, 55, 0.1);
  padding: 10px 0;
  overflow: hidden;
  position: relative;
  z-index: 100;
}

.ticker-bar::before,
.ticker-bar::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}

.ticker-bar::before {
  left: 0;
  background: linear-gradient(90deg, #080A10, transparent);
}

.ticker-bar::after {
  right: 0;
  background: linear-gradient(-90deg, #080A10, transparent);
}

.ticker-track {
  display: flex;
  animation: tickerScroll 40s linear infinite;
  width: max-content;
}

.ticker-track:hover {
  animation-play-state: paused;
}

.ticker-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 32px;
  white-space: nowrap;
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
}

.ticker-item .metal-name {
  color: var(--gold-light);
  font-weight: 600;
}

.ticker-item .metal-price {
  color: var(--text-primary);
  font-weight: 500;
}

.ticker-item .metal-change {
  font-weight: 500;
  font-size: 0.8rem;
}

.ticker-item .metal-change.up { color: var(--green); }
.ticker-item .metal-change.down { color: var(--red); }

.ticker-premium {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--bg-primary);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  white-space: nowrap;
}

@keyframes tickerScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* === Navigation === */
.main-nav {
  position: sticky;
  top: 0;
  z-index: 99;
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

.main-nav.scrolled {
  background: rgba(11, 14, 20, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.nav-logo .logo-mark {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 10px rgba(212,175,55,0.4));
  transition: filter 0.3s ease, transform 0.3s ease;
}

.nav-logo:hover .logo-mark {
  filter: drop-shadow(0 0 18px rgba(212,175,55,0.6));
  transform: rotate(-5deg);
}

.nav-logo .logo-mark svg {
  width: 100%;
  height: 100%;
}

.nav-logo .logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-logo .logo-brand {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold-primary);
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-shadow: 0 0 20px rgba(212,175,55,0.2);
}

.nav-logo .logo-accent {
  color: var(--gold-bright);
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.12em;
}

.nav-logo .logo-tagline {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.5rem;
  font-weight: 600;
  color: var(--gold-primary);
  letter-spacing: 0.3em;
  opacity: 0.5;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-menu a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 400;
  position: relative;
  padding: 4px 0;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold-primary);
  transition: width 0.3s ease;
}

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

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--gold-light);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
  color: var(--bg-primary);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary:hover {
  box-shadow: 0 0 25px rgba(212, 175, 55, 0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: transparent;
  color: var(--gold-light);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border-gold);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-secondary:hover {
  border-color: var(--gold-primary);
  background: rgba(212, 175, 55, 0.08);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.15);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gold-light);
  border-radius: 2px;
  transition: var(--transition);
}

.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);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(11, 14, 20, 0.98);
  backdrop-filter: blur(20px);
  z-index: 98;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-menu.active {
  display: flex;
  opacity: 1;
}

.mobile-menu a {
  font-size: 1.25rem;
  color: var(--text-secondary);
  font-weight: 500;
}

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

/* === Hero Section === */
.hero {
  position: relative;
  min-height: calc(100vh - 112px);
  display: flex;
  align-items: center;
  padding: 60px 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/hero-bg-v3.jpeg');
  background-size: cover;
  background-position: center right;
  background-repeat: no-repeat;
  opacity: 0.35;
  pointer-events: none;
}

/* Dark gradient overlay for text readability */
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    rgba(11, 14, 20, 0.95) 0%,
    rgba(11, 14, 20, 0.85) 35%,
    rgba(11, 14, 20, 0.6) 55%,
    rgba(11, 14, 20, 0.2) 75%,
    transparent 100%
  );
  pointer-events: none;
  z-index: 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 50%, rgba(212, 175, 55, 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(212, 175, 55, 0.03) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(212, 175, 55, 0.02) 0%, transparent 50%);
  animation: heroGlow 8s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0); }
  100% { transform: translate(5%, 3%); }
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 560px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--gold-light);
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--gold-primary), var(--gold-bright), var(--gold-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-buttons .btn-primary {
  padding: 14px 32px;
  font-size: 1rem;
}

.hero-buttons .btn-secondary {
  padding: 14px 32px;
  font-size: 1rem;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--glass-border);
}

.hero-stat .stat-value {
  font-family: 'Inter', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-primary), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat .stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* === Hero Gold Bars Decoration === */
/* === Chart Card === */
.hero-chart {
  position: relative;
}

.chart-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.chart-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.3), transparent);
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.chart-title-area {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.chart-title-area h3 {
  font-family: 'Inter', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.chart-title-area .chart-code {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
}

.chart-price-info {
  text-align: right;
}

.chart-price-info .current-price {
  font-family: 'Inter', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold-primary);
}

.chart-price-info .price-change {
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
}

.chart-price-info .price-change.up { color: var(--green); }
.chart-price-info .price-change.down { color: var(--red); }

.chart-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  padding: 4px;
}

.chart-tab {
  padding: 6px 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}

.chart-tab:hover {
  color: var(--text-secondary);
}

.chart-tab.active {
  background: rgba(212, 175, 55, 0.15);
  color: var(--gold-light);
}

#kline-chart {
  width: 100%;
  height: 320px;
}

/* === Categories Section === */
.categories {
  padding: var(--section-padding);
  position: relative;
  overflow: hidden;
}

.categories::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/gold-bars-natural.jpeg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.12;
  mix-blend-mode: screen;
  pointer-events: none;
}

.categories::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 30% 50%, transparent 30%, var(--bg-primary) 75%),
    linear-gradient(180deg, var(--bg-primary) 0%, transparent 15%, transparent 85%, var(--bg-primary) 100%);
  pointer-events: none;
}

.categories > .container {
  position: relative;
  z-index: 1;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.category-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-card);
  padding: 36px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.03), transparent);
  transition: left 0.6s ease;
}

.category-card:hover::before {
  left: 100%;
}

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

.category-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(212, 175, 55, 0.02));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.category-card:hover .category-icon {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(212, 175, 55, 0.05));
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.15);
}

.category-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--gold-primary);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.category-card h3 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.category-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === Process Section === */
.process {
  padding: var(--section-padding);
  background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary), var(--bg-primary));
  position: relative;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 48px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--border-gold), var(--gold-primary), var(--border-gold));
  z-index: 0;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 56px;
  height: 56px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bg-primary);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.2);
  position: relative;
}

.step-number::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(212, 175, 55, 0.2);
}

.step-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--gold-light);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.process-step h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.process-step p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 200px;
  margin: 0 auto;
}

/* === Advantages Section === */
.advantages {
  padding: var(--section-padding);
  position: relative;
  overflow: hidden;
}

.advantages::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/precious-metals.jpeg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.08;
  mix-blend-mode: screen;
  pointer-events: none;
}

.advantages::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 70% 50%, transparent 30%, var(--bg-primary) 75%),
    linear-gradient(180deg, var(--bg-primary) 0%, transparent 15%, transparent 85%, var(--bg-primary) 100%);
  pointer-events: none;
}

.advantages > .container {
  position: relative;
  z-index: 1;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 36px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.advantage-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

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

.advantage-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(212, 175, 55, 0.02));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.advantage-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--gold-primary);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.advantage-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.advantage-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === Calculator Section === */
.calculator {
  padding: var(--section-padding);
  background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
  position: relative;
  overflow: hidden;
}

.calculator::before {
  content: '';
  position: absolute;
  top: 50%;
  right: -5%;
  width: 45%;
  height: 80%;
  transform: translateY(-50%);
  background-image: url('/assets/gold-bar-single.jpeg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.1;
  mix-blend-mode: lighten;
  pointer-events: none;
  border-radius: 40%;
  filter: blur(1px);
}

.calculator > .container {
  position: relative;
  z-index: 1;
}

.calculator-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.calc-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.calc-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.3), transparent);
}

.calc-card h3 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 28px;
  color: var(--text-primary);
}

.calc-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-group select,
.form-group input {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-btn);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group select:focus,
.form-group input:focus {
  border-color: var(--gold-primary);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-group select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.calc-result {
  margin-top: 8px;
  padding: 24px;
  background: rgba(212, 175, 55, 0.05);
  border: 1px solid rgba(212, 175, 55, 0.15);
  border-radius: 12px;
  text-align: center;
}

.calc-result .result-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.calc-result .result-value {
  font-family: 'Inter', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-primary), var(--gold-bright));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.calc-result .result-unit {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Contact Form */
.contact-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.contact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.3), transparent);
}

.contact-card h3 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.contact-card .contact-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.6;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-form .btn-primary {
  width: 100%;
  justify-content: center;
  padding: 14px;
  font-size: 1rem;
  margin-top: 4px;
}

.form-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: -8px;
}

/* === Footer === */
.footer {
  padding: 60px 0 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--glass-border);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold-primary);
  margin-bottom: 16px;
  text-shadow: 0 0 20px rgba(212,175,55,0.15);
}

.footer-brand .footer-logo span {
  font-size: 1.5rem;
}

.footer-brand .footer-logo svg {
  filter: drop-shadow(0 0 8px rgba(212,175,55,0.3));
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

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

.footer-certs span {
  padding: 4px 12px;
  background: rgba(212, 175, 55, 0.06);
  border: 1px solid rgba(212, 175, 55, 0.12);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--gold-light);
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-col ul li a:hover {
  color: var(--gold-light);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 16px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  stroke: var(--gold-primary);
  fill: none;
  stroke-width: 1.5;
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-contact-item .contact-value {
  color: var(--text-primary);
  font-weight: 500;
}

.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* === Scroll Animations === */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  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; }

/* === Gold Shimmer Effect === */
@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.shimmer-text {
  background: linear-gradient(
    90deg,
    var(--gold-primary) 0%,
    var(--gold-bright) 25%,
    var(--gold-primary) 50%,
    var(--gold-bright) 75%,
    var(--gold-primary) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s linear infinite;
}

/* === Responsive === */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px 0;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-content {
    max-width: 100%;
    text-align: center;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

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

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }

  .process-steps::before {
    display: none;
  }

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

  .calculator-wrapper {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 60px 0;
  }

  .nav-container {
    height: 56px;
    padding: 0 12px;
    gap: 8px;
  }

  .nav-logo {
    gap: 0;
    min-width: 0;
    flex: 1;
  }

  .nav-logo .logo-mark {
    width: 36px;
    height: 36px;
  }

  .nav-logo .logo-text {
    display: none;
  }

  .nav-menu, .nav-cta .nav-phone {
    display: none;
  }

  .nav-cta {
    gap: 8px;
    flex-shrink: 0;
  }

  .nav-cta .btn-primary {
    padding: 7px 12px;
    font-size: 0.7rem;
    white-space: nowrap;
  }

  .hamburger {
    display: flex;
    padding: 6px;
  }

  .hero {
    min-height: auto;
    padding: 40px 0 60px;
  }

  .hero-title {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
  }

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

  .hero-stats {
    gap: 24px;
    flex-wrap: wrap;
  }

  .hero-stat .stat-value {
    font-size: 1.4rem;
  }

  .chart-card {
    padding: 16px;
  }

  #kline-chart {
    height: 250px;
  }

  .categories-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .category-card {
    padding: 24px 16px;
  }

  .process-steps {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .advantages-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .calc-card, .contact-card {
    padding: 24px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section-header {
    margin-bottom: 40px;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-buttons .btn-primary,
  .hero-buttons .btn-secondary {
    justify-content: center;
  }

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

  .process-steps {
    grid-template-columns: 1fr;
  }

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

  .hero-stats {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  .chart-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .chart-price-info {
    text-align: left;
  }

  .calc-result .result-value {
    font-size: 1.5rem;
  }
}

/* ============================================
   CHAT WIDGET
   ============================================ */

.chat-widget {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 10000;
  font-family: 'Inter', system-ui, sans-serif;
}

/* Toggle Button */
.chat-toggle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #D4AF37, #E6C687);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0B0E14;
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.4);
  transition: all 0.3s var(--ease);
  position: relative;
}

.chat-toggle:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 30px rgba(212, 175, 55, 0.6);
}

.chat-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #EF4444;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #0B0E14;
}

/* Chat Window */
.chat-window {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 380px;
  max-height: 560px;
  background: #12161F;
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(212, 175, 55, 0.08);
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  pointer-events: none;
  transition: all 0.35s var(--ease);
}

.chat-window.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* Chat Header */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.12), rgba(212, 175, 55, 0.04));
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #D4AF37, #E6C687);
  color: #0B0E14;
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-header-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: #F5F5F5;
}

.chat-header-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: #9CA3AF;
  margin-top: 2px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22C55E;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.chat-close {
  background: none;
  border: none;
  color: #9CA3AF;
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: all 0.2s;
}

.chat-close:hover {
  color: #F5F5F5;
  background: rgba(255, 255, 255, 0.08);
}

/* Chat Body */
.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 200px;
  max-height: 320px;
}

.chat-body::-webkit-scrollbar {
  width: 4px;
}

.chat-body::-webkit-scrollbar-track {
  background: transparent;
}

.chat-body::-webkit-scrollbar-thumb {
  background: rgba(212, 175, 55, 0.2);
  border-radius: 2px;
}

/* Chat Messages */
.chat-message {
  display: flex;
  gap: 10px;
  animation: fadeInUp 0.3s ease-out;
}

.chat-message.user {
  flex-direction: row-reverse;
}

.chat-msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.chat-message.bot .chat-msg-avatar {
  background: linear-gradient(135deg, #D4AF37, #E6C687);
  color: #0B0E14;
}

.chat-message.user .chat-msg-avatar {
  background: rgba(255, 255, 255, 0.1);
  color: #9CA3AF;
}

.chat-bubble {
  max-width: 75%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.85rem;
  line-height: 1.5;
  position: relative;
}

.chat-message.bot .chat-bubble {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #F5F5F5;
  border-top-left-radius: 4px;
}

.chat-message.user .chat-bubble {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(212, 175, 55, 0.1));
  border: 1px solid rgba(212, 175, 55, 0.2);
  color: #F5F5F5;
  border-top-right-radius: 4px;
}

.chat-bubble p {
  margin: 0;
  word-wrap: break-word;
}

.chat-time {
  display: block;
  font-size: 0.65rem;
  color: #6B7280;
  margin-top: 6px;
  text-align: right;
}

/* Typing Indicator */
.typing-indicator .chat-bubble {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 14px 18px;
}

.typing-indicator .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #D4AF37;
  animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-indicator .dot:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator .dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typingBounce {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  30% {
    transform: translateY(-6px);
    opacity: 1;
  }
}

/* Quick Replies */
.chat-quick-replies {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.quick-reply {
  padding: 6px 12px;
  border-radius: 16px;
  border: 1px solid rgba(212, 175, 55, 0.25);
  background: rgba(212, 175, 55, 0.06);
  color: #E6C687;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.quick-reply:hover {
  background: rgba(212, 175, 55, 0.15);
  border-color: rgba(212, 175, 55, 0.4);
}

/* Chat Input */
.chat-input {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid rgba(212, 175, 55, 0.12);
  background: rgba(0, 0, 0, 0.2);
}

.chat-input input {
  flex: 1;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 10px 16px;
  color: #F5F5F5;
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.2s;
  font-family: 'Inter', system-ui, sans-serif;
}

.chat-input input::placeholder {
  color: #6B7280;
}

.chat-input input:focus {
  border-color: rgba(212, 175, 55, 0.4);
}

.chat-input button {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #D4AF37, #E6C687);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0B0E14;
  transition: all 0.2s;
  flex-shrink: 0;
}

.chat-input button:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px rgba(212, 175, 55, 0.4);
}

.chat-input button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Chat Widget Mobile */
@media (max-width: 480px) {
  .chat-widget {
    bottom: 16px;
    right: 16px;
  }

  .chat-window {
    width: calc(100vw - 32px);
    max-height: 70vh;
    position: fixed;
    bottom: 0;
    right: 0;
    border-radius: 16px 16px 0 0;
  }

  .chat-toggle {
    width: 52px;
    height: 52px;
  }

  .quick-reply {
    font-size: 0.7rem;
    padding: 5px 10px;
  }
}