/* AI EMPIRE - LINDA NGOC LUXURY THEME */
:root {
  --bg-primary: #07090e;
  --bg-secondary: #0d121f;
  --bg-card: #131929;
  --bg-card-hover: #1a233a;
  --border-color: rgba(212, 175, 55, 0.2);
  --border-active: #d4af37;
  
  --gold-primary: #d4af37;
  --gold-light: #fbeea4;
  --gold-dark: #8c6e14;
  --gold-gradient: linear-gradient(135deg, #fbeea4 0%, #d4af37 50%, #997a15 100%);
  
  --cyan-accent: #00f2fe;
  --green-accent: #00d26a;
  --red-accent: #e01a22;
  --rose-accent: #fe0979;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.15);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.5);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;
  
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
  padding-bottom: 70px; /* Space for mobile floating bar */
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.25;
  color: #ffffff;
}

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

.text-cyan { color: var(--cyan-accent); }
.text-green { color: var(--green-accent); }

/* Containers */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
  min-height: 48px;
  min-width: 48px;
}

.btn-gold {
  background: var(--gold-gradient);
  color: #07090e;
  box-shadow: 0 4px 18px rgba(212, 175, 55, 0.35);
  font-weight: 800;
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(212, 175, 55, 0.55);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-color);
  color: var(--text-main);
}
.btn-outline:hover {
  border-color: var(--gold-primary);
  background: rgba(212, 175, 55, 0.1);
  color: var(--gold-light);
}

.btn-zalo {
  background: #0068ff;
  color: #ffffff;
}
.btn-zalo:hover {
  background: #0056d6;
  box-shadow: 0 4px 16px rgba(0, 104, 255, 0.4);
}

.btn-hotline {
  background: #e01a22;
  color: #ffffff;
}
.btn-hotline:hover {
  background: #c2151c;
  box-shadow: 0 4px 16px rgba(224, 26, 34, 0.4);
}

.btn-tiktok {
  background: #000000;
  border: 1px solid #333;
  color: #ffffff;
}
.btn-tiktok:hover {
  border-color: var(--cyan-accent);
}

/* Sticky Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 9, 14, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-symbol {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid var(--gold-primary);
  background: #111827;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--gold-primary);
}

.logo-text-wrap {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 1.5px;
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-subtitle {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 22px;
}

.nav-link {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.2s;
  padding: 6px 0;
  position: relative;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--gold-primary);
  padding: 10px;
  cursor: pointer;
  min-width: 48px;
  min-height: 48px;
}

/* Mobile Nav Drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(7, 9, 14, 0.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  padding: 30px 24px;
  flex-direction: column;
  gap: 18px;
  overflow-y: auto;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  color: #ffffff;
  font-size: 1.15rem;
  font-weight: 700;
  text-decoration: none;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* Section Common Styling */
section {
  padding: 70px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(212, 175, 55, 0.12);
  border: 1px solid var(--border-color);
  color: var(--gold-light);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
}

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

/* Hero Section */
.hero-section {
  padding: 50px 0 70px 0;
  background: radial-gradient(circle at 50% 20%, rgba(212, 175, 55, 0.08), transparent 70%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-full);
  color: var(--cyan-accent);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-headline {
  font-size: 2.8rem;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-subheadline {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 30px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.hero-features-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.strip-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #cbd5e1;
}

.hero-visual-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-card);
}

.hero-image-frame {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #000;
}

.hero-image-frame img, .hero-image-frame svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Comic Story / Pain Points Carousel */
.comic-carousel-wrapper {
  position: relative;
  overflow: hidden;
  margin-top: 20px;
}

.comic-track {
  display: flex;
  gap: 20px;
  transition: transform 0.4s ease-in-out;
}

.comic-card {
  min-width: 320px;
  max-width: 360px;
  flex: 0 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s, border-color 0.25s;
}

.comic-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-primary);
}

.comic-card-img {
  width: 100%;
  aspect-ratio: 4/3;
  background: #000;
}

.comic-card-img img, .comic-card-img svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.comic-card-body {
  padding: 18px;
}

.comic-step-pill {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(212, 175, 55, 0.2);
  color: var(--gold-light);
  margin-bottom: 8px;
}

.comic-title {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.comic-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.carousel-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
}

.carousel-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--gold-primary);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all 0.2s;
}
.carousel-btn:hover {
  background: var(--gold-primary);
  color: #000;
}

/* Solutions Section */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.solution-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-gold);
}

.solution-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(212, 175, 55, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 18px;
  color: var(--gold-primary);
}

.solution-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.solution-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* Modules / Curriculum Section */
.modules-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 900px;
  margin: 0 auto;
}

.module-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.module-header {
  padding: 22px 26px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.module-header:hover {
  background: rgba(212, 175, 55, 0.05);
}

.module-num {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--gold-primary);
  margin-right: 12px;
}

.module-title-text {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
}

.module-toggle-icon {
  font-size: 1.2rem;
  color: var(--gold-primary);
  transition: transform 0.25s;
}

.module-content {
  padding: 0 26px 22px 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: none;
}

.module-card.active .module-content {
  display: block;
}
.module-card.active .module-toggle-icon {
  transform: rotate(180deg);
}

.module-items-list {
  list-style: none;
  margin-top: 14px;
}

.module-items-list li {
  padding: 8px 0;
  color: #cbd5e1;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.module-items-list li::before {
  content: '✓';
  color: var(--green-accent);
  font-weight: 900;
}

/* 26 AI Tools Catalog */
.tools-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
  background: var(--bg-card);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.search-input-wrap {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.search-input {
  width: 100%;
  padding: 12px 18px 12px 42px;
  border-radius: var(--radius-full);
  background: #080b12;
  border: 1px solid var(--border-color);
  color: #fff;
  font-size: 0.95rem;
  outline: none;
}
.search-input:focus {
  border-color: var(--gold-primary);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
}

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-btn {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.tag-btn.active, .tag-btn:hover {
  background: var(--gold-gradient);
  color: #000;
  border-color: transparent;
  font-weight: 700;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-primary);
  box-shadow: 0 8px 24px rgba(212, 175, 55, 0.18);
}

.tool-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.tool-badge-id {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--gold-primary);
  background: rgba(212, 175, 55, 0.12);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.tool-price-tag {
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--green-accent);
}

.tool-name {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: #ffffff;
}

.tool-usage {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  flex-grow: 1;
}

.tool-actions-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.btn-sm {
  padding: 9px 12px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
  min-height: 40px;
}

/* Instructor Section */
.instructor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 40px;
  align-items: center;
  box-shadow: var(--shadow-card);
}

.instructor-avatar-box {
  text-align: center;
}

.instructor-img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  margin: 0 auto 18px auto;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(212, 175, 55, 0.3);
}

.instructor-img svg, .instructor-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.instructor-name {
  font-size: 1.7rem;
  font-weight: 900;
  margin-bottom: 6px;
}

.instructor-role {
  color: var(--gold-light);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 14px;
}

.instructor-bio-text {
  color: #cbd5e1;
  font-size: 1rem;
  margin-bottom: 18px;
}

.disclaimer-badge {
  background: rgba(255, 255, 255, 0.04);
  border-left: 3px solid var(--gold-primary);
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all 0.3s;
}

.price-card.featured {
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-gold);
  background: linear-gradient(180deg, #171f33 0%, var(--bg-card) 100%);
}

.price-badge-top {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--gold-gradient);
  color: #000;
  font-size: 0.75rem;
  font-weight: 900;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.price-title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.price-amount-box {
  margin-bottom: 20px;
}

.old-price {
  text-decoration: line-through;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.new-price {
  font-size: 2rem;
  font-weight: 900;
  color: var(--gold-light);
}

.price-features {
  list-style: none;
  margin-bottom: 24px;
  flex-grow: 1;
}

.price-features li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 8px;
}
.price-features li::before {
  content: '✓';
  color: var(--gold-primary);
  font-weight: 900;
}

/* Payment & Techcombank Section */
.payment-card-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
}

.qr-display-box {
  text-align: center;
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 20px;
}

.qr-img-wrapper {
  max-width: 320px;
  margin: 0 auto 16px auto;
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  cursor: pointer;
}

.qr-img-wrapper svg, .qr-img-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

.payment-details {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.bank-info-item {
  margin-bottom: 18px;
}

.bank-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.bank-val {
  font-size: 1.4rem;
  font-weight: 900;
  color: #fff;
}

.stk-copy-box {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #080c14;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--gold-primary);
  margin-top: 6px;
}

.stk-number {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--gold-light);
  letter-spacing: 2px;
}

.copy-btn {
  background: var(--gold-gradient);
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-weight: 800;
  font-size: 0.82rem;
  cursor: pointer;
  color: #000;
  transition: transform 0.2s;
}
.copy-btn:hover {
  transform: scale(1.05);
}

.syntax-box {
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.3);
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin: 18px 0;
}

.syntax-text {
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--cyan-accent);
  font-size: 1.05rem;
}

/* Registration Form */
.form-card {
  max-width: 760px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: #cbd5e1;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: #080c14;
  border: 1px solid var(--border-color);
  color: #fff;
  font-family: var(--font-main);
  font-size: 0.95rem;
  outline: none;
  min-height: 48px;
}

.form-control:focus {
  border-color: var(--gold-primary);
  box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.2);
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.form-check input {
  margin-top: 3px;
  min-width: 20px;
  min-height: 20px;
  accent-color: var(--gold-primary);
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-q {
  padding: 20px 24px;
  font-weight: 800;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}
.faq-q:hover {
  background: rgba(212, 175, 55, 0.05);
}

.faq-a {
  padding: 0 24px 20px 24px;
  color: #cbd5e1;
  font-size: 0.95rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: none;
}

.faq-item.active .faq-a {
  display: block;
}
.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* Floating Mobile Contact Bar */
.floating-mobile-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(7, 9, 14, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-color);
  z-index: 998;
  padding: 0 10px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.6);
}

.floating-bar-inner {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  height: 100%;
  align-items: center;
  gap: 4px;
}

.float-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.68rem;
  font-weight: 700;
  height: 100%;
  min-height: 48px;
}

.float-item svg, .float-item span.icon {
  font-size: 1.2rem;
  margin-bottom: 2px;
}

.float-item.zalo-color { color: #0084ff; }
.float-item.phone-color { color: #ff3b30; }
.float-item.tiktok-color { color: var(--cyan-accent); }
.float-item.fb-color { color: #1877f2; }
.float-item.reg-color { color: var(--gold-light); font-weight: 800; }

/* Modals */
.modal-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow-y: auto;
}

.modal-backdrop.open {
  display: flex;
}

.modal-window {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 30px;
  position: relative;
  box-shadow: var(--shadow-card);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 1.6rem;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-close-btn:hover {
  color: #fff;
}

/* Toast */
.toast-msg {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 3000;
  background: var(--gold-gradient);
  color: #000;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-weight: 800;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  transform: translateY(-80px);
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
}
.toast-msg.show {
  transform: translateY(0);
  opacity: 1;
}

/* Footer */
.site-footer {
  background: #040609;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px 0;
  color: var(--text-muted);
}

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

.footer-col h4 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col ul li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.footer-col ul li a:hover {
  color: var(--gold-light);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.85rem;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-cta-group {
    justify-content: center;
  }
  .hero-features-strip {
    justify-content: center;
  }
  .instructor-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .payment-card-wrap {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .nav-menu {
    display: none;
  }
  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .floating-mobile-bar {
    display: block;
  }
  .section-title {
    font-size: 1.7rem;
  }
  .hero-headline {
    font-size: 2rem;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .btn {
    width: 100%;
  }
  .tool-actions-row {
    grid-template-columns: 1fr;
  }
  .stk-copy-box {
    flex-direction: column;
    text-align: center;
  }
}