/* ==========================================================================
   HỘI DOANH NHÂN VŨ - VÕ VIỆT NAM - ELEGANT LANDING PAGE STYLESHEET
   Refined Palette: Deep Traditional Maroon (#800000), Warm Copper (#ED6203), Gold Accent (#C5A059), Soft Neutrals (#F9FAFB, #FFFFFF)
   ========================================================================== */

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

:root {
  /* Color Tokens */
  --primary-maroon: #800000;
  --primary-dark: #5A0000;
  --primary-light: #9B1C1C;
  --accent-warm: #ED6203;
  --gold-main: #C5A059;
  --gold-light: #F3E8D2;
  --navy-dark: #111827;
  --navy-slate: #1F2937;
  
  --bg-cream: #F9FAFB;
  --bg-surface: #FFFFFF;
  --bg-alt: #F3F4F6;
  --text-main: #1F2937;
  --text-muted: #6B7280;
  --text-light: #F9FAFB;
  --border-light: #E5E7EB;
  --border-subtle: #F0E6D2;

  /* Shadows & Elevations */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08);

  /* Fonts */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

  /* Layout Tokens */
  --container-max: 1200px;
  --header-height: 76px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--text-main);
  background-color: var(--bg-cream);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

/* Reusable Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 4.5rem 0;
}

.bg-alt {
  background-color: var(--bg-alt);
}

.bg-maroon {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-maroon));
  color: #FFFFFF;
}

.section-header {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 3rem;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.9rem;
  background-color: rgba(128, 0, 0, 0.06);
  border: 1px solid rgba(128, 0, 0, 0.15);
  color: var(--primary-maroon);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-radius: 50px;
  margin-bottom: 0.8rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--navy-dark);
  line-height: 1.3;
  margin-bottom: 0.8rem;
}

.bg-maroon .section-title {
  color: #FFFFFF;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
}

.bg-maroon .section-subtitle {
  color: rgba(255,255,255,0.85);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-maroon);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background-color: var(--accent-warm);
  color: #FFFFFF;
}

.btn-accent:hover {
  background-color: #D65500;
  box-shadow: var(--shadow-md);
}

.btn-outline-maroon {
  border-color: var(--primary-maroon);
  color: var(--primary-maroon);
  background: transparent;
}

.btn-outline-maroon:hover {
  background-color: var(--primary-maroon);
  color: #FFFFFF;
}

.btn-outline-white {
  border-color: rgba(255,255,255,0.4);
  color: #FFFFFF;
  background: transparent;
}

.btn-outline-white:hover {
  background-color: rgba(255,255,255,0.15);
  border-color: #FFFFFF;
}

/* Topbar */
.topbar {
  background-color: var(--navy-dark);
  color: rgba(255,255,255,0.75);
  font-size: 0.82rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar-info {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.topbar-link {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

.topbar-link:hover {
  color: var(--accent-warm);
}

.lang-switch {
  display: flex;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 4px;
  overflow: hidden;
}

.lang-btn {
  background: transparent;
  border: none;
  color: #FFF;
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}

.lang-btn.active {
  background-color: var(--accent-warm);
  color: #FFF;
}

/* Mobile language row - only visible inside hamburger menu on mobile */
.mobile-lang-row {
  display: none;
}

.sticky-nav-wrapper {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

/* Header & Clean Navigation */
.header {
  position: relative;
  width: 100%;
  background-color: #FFFFFF;
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
  border-radius: 6px;
  filter: drop-shadow(0 2px 6px rgba(128, 0, 0, 0.15));
  transition: var(--transition);
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.03);
}

.brand-logo-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-maroon);
  line-height: 1.15;
  letter-spacing: 0.3px;
}

.brand-subtitle {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent-warm);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin-top: 1px;
}

/* Footer Brand variant */
.footer .brand-title {
  color: #FFFFFF;
}

.footer .brand-subtitle {
  color: var(--gold-light);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-main);
  padding: 0.4rem 0;
  position: relative;
}

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

.nav-link.active::after, .nav-link:hover::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-maroon);
}

.header-ctas {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--primary-maroon);
  cursor: pointer;
}

/* Hero Section */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--navy-dark) 0%, #1E1B18 100%);
  color: #FFFFFF;
  padding: 4.8rem 0 5.5rem;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at 70% 30%, rgba(128, 0, 0, 0.25), transparent 60%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.9rem;
  background-color: rgba(237, 98, 3, 0.15);
  border: 1px solid var(--accent-warm);
  color: #FFB380;
  font-weight: 600;
  font-size: 0.8rem;
  border-radius: 50px;
  margin-bottom: 1.2rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #FFFFFF;
}

.hero-subtitle {
  font-size: 1.08rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.85);
  margin-bottom: 1.8rem;
}

.hero-btns {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.hero-card-preview {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.hero-card-preview h3 {
  font-family: var(--font-serif);
  color: var(--gold-light);
  font-size: 1.35rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 0.7rem;
}

.hero-card-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  margin-bottom: 0.9rem;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.85);
}

.hero-card-list svg {
  width: 18px;
  height: 18px;
  fill: var(--accent-warm);
  flex-shrink: 0;
  margin-top: 3px;
}

/* Key Metrics / Stats Counter (Section 5.3) */
.stats-section {
  margin-top: -3rem;
  position: relative;
  z-index: 10;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.2rem;
  background-color: var(--bg-surface);
  padding: 1.8rem 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
}

.stat-item {
  text-align: center;
  padding: 0.6rem;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--primary-maroon);
  line-height: 1;
  margin-bottom: 0.3rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* About Us Section (Section 5.4) */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.about-card-banner {
  background: linear-gradient(135deg, var(--bg-alt), #EAEBEF);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.about-symbol-icon {
  width: 80px;
  height: 80px;
  background-color: var(--primary-maroon);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  box-shadow: var(--shadow-md);
}

.about-symbol-icon svg {
  width: 40px;
  height: 40px;
  fill: currentColor;
}

.about-card-banner h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--navy-dark);
  margin-bottom: 0.5rem;
}

.about-card-banner p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.about-list {
  margin: 1.5rem 0;
}

.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  margin-bottom: 0.8rem;
  font-size: 0.95rem;
}

.about-list svg {
  width: 20px;
  height: 20px;
  fill: var(--primary-maroon);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Vision - Mission - Core Values (Section 5.5) */
.vmv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
}

.vmv-card {
  background-color: var(--bg-surface);
  padding: 2.2rem 1.8rem;
  border-radius: var(--radius-md);
  border-top: 3px solid var(--primary-maroon);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.vmv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.vmv-icon {
  width: 48px;
  height: 48px;
  background-color: rgba(128, 0, 0, 0.06);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
}

.vmv-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--primary-maroon);
}

.vmv-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--navy-dark);
  margin-bottom: 0.6rem;
}

.vmv-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.core-values-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.8rem;
}

.value-tag {
  background-color: rgba(237, 98, 3, 0.08);
  color: var(--accent-warm);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.25rem 0.7rem;
  border-radius: 50px;
}

/* Benefits Grid (Section 5.6) */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.benefit-card {
  display: flex;
  gap: 1rem;
  background-color: var(--bg-surface);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.benefit-card:hover {
  border-color: var(--primary-maroon);
  box-shadow: var(--shadow-md);
}

.benefit-icon {
  width: 42px;
  height: 42px;
  background-color: var(--primary-maroon);
  color: #FFFFFF;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.benefit-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.benefit-info h4 {
  font-size: 1.05rem;
  color: var(--navy-dark);
  margin-bottom: 0.3rem;
}

.benefit-info p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Portal Feature Showcase (Section 5.7) */
.portal-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.portal-features-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.portal-feature-item {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 1.1rem;
  border-radius: var(--radius-sm);
}

.portal-feature-item h5 {
  color: var(--gold-light);
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.portal-feature-item p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.75);
}

.portal-card-box {
  background-color: #FFFFFF;
  color: var(--navy-dark);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}

.portal-card-box h4 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--primary-maroon);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-light);
}

/* Featured Member Cards Template (Section 5.8) */
.member-filters {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-btn {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  padding: 0.45rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn.active, .filter-btn:hover {
  background-color: var(--primary-maroon);
  color: #FFFFFF;
  border-color: var(--primary-maroon);
}

.members-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.member-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

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

.member-avatar-box {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-maroon), var(--primary-dark));
  color: #FFFFFF;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.member-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-warm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.3rem;
}

.member-name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--navy-dark);
  margin-bottom: 0.2rem;
}

.member-company {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary-maroon);
  margin-bottom: 0.3rem;
}

.member-role {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
}

/* Sectors Grid (Section 5.9) */
.sectors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.sector-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: block;
}

.sector-card:hover {
  border-color: var(--primary-maroon);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.sector-icon {
  font-size: 2rem;
  margin-bottom: 0.8rem;
}

.sector-card h4 {
  font-size: 1.1rem;
  color: var(--navy-dark);
  margin-bottom: 0.4rem;
}

.sector-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* 4-Step Process Timeline (Section 5.10) */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}

.process-card {
  background-color: var(--bg-surface);
  padding: 1.8rem 1.2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  text-align: center;
}

.process-step {
  width: 40px;
  height: 40px;
  background: var(--primary-maroon);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 1.1rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.process-card h4 {
  font-size: 1.05rem;
  color: var(--navy-dark);
  margin-bottom: 0.4rem;
}

.process-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Events Cards (Section 5.11) */
.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.event-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.event-card:hover {
  border-color: var(--primary-maroon);
  box-shadow: var(--shadow-md);
}

.event-date-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: rgba(128, 0, 0, 0.08);
  color: var(--primary-maroon);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.35rem 0.8rem;
  border-radius: 50px;
  margin-bottom: 1rem;
  width: fit-content;
}

.event-title {
  font-size: 1.1rem;
  color: var(--navy-dark);
  margin-bottom: 0.8rem;
  line-height: 1.4;
}

.event-meta {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  margin-top: auto;
}

/* News Section (Section 5.12) */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.news-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
}

.news-cat {
  color: var(--accent-warm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.news-title {
  font-size: 1.05rem;
  color: var(--navy-dark);
  margin-bottom: 0.6rem;
  line-height: 1.4;
}

/* Member Support Center (Section 5.13) */
.support-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.support-service-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.support-service-card:hover {
  border-color: var(--primary-maroon);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.support-service-icon {
  width: 44px;
  height: 44px;
  background-color: rgba(237, 98, 3, 0.1);
  color: var(--accent-warm);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.support-service-card h4 {
  font-size: 1.08rem;
  color: var(--navy-dark);
  margin-bottom: 0.4rem;
}

.support-service-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Partners Logo Grid (Section 5.14) */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.2rem;
  align-items: center;
}

.partner-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  padding: 1.2rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80px;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  transition: var(--transition);
}

.partner-item:hover {
  color: var(--primary-maroon);
  border-color: var(--primary-maroon);
  box-shadow: var(--shadow-sm);
}

/* CTA Banner (Section 5.15) */
.cta-banner {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-maroon));
  color: #FFFFFF;
  padding: 4rem 0;
  text-align: center;
}

.cta-banner h2 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  margin-bottom: 0.8rem;
}

.cta-banner p {
  font-size: 1.05rem;
  margin-bottom: 1.8rem;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  color: rgba(255,255,255,0.88);
}

/* Footer (Section 5.16) */
.footer {
  background-color: var(--navy-dark);
  color: rgba(255,255,255,0.72);
  padding: 4rem 0 2rem;
  font-size: 0.88rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 2.5rem;
  margin-bottom: 3.5rem;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 1rem;
  margin-bottom: 1.2rem;
  font-weight: 600;
}

.footer-col p {
  margin-bottom: 0.7rem;
  line-height: 1.5;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.8rem;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  font-size: 0.82rem;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--navy-dark);
  color: #FFF;
  padding: 0.9rem 1.4rem;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--accent-warm);
  box-shadow: var(--shadow-lg);
  z-index: 3000;
  transform: translateY(100px);
  opacity: 0;
  transition: var(--transition);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .hero-grid, .about-grid, .portal-showcase {
    grid-template-columns: 1fr;
  }
  .vmv-grid, .process-grid, .news-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  /* Ẩn hoàn toàn topbar trên mobile */
  .topbar {
    display: none;
  }

  .nav-links, .header-ctas {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .mobile-menu-active .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    padding: 1.5rem 1.8rem 1.8rem;
    box-shadow: var(--shadow-md);
    gap: 0.2rem;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .vmv-grid, .process-grid, .news-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 0.8rem;
    text-align: center;
  }

  /* Language switcher bên trong mobile menu */
  .mobile-lang-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem 0;
    border-top: 1px solid var(--border-light);
    margin-top: 0.5rem;
  }
  .mobile-lang-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
  }
  .mobile-lang-row .lang-switch {
    border-color: var(--border-light);
  }
  .mobile-lang-row .lang-btn {
    color: var(--text-main);
    padding: 0.3rem 0.75rem;
    font-size: 0.82rem;
  }
  .mobile-lang-row .lang-btn.active {
    background-color: var(--accent-warm);
    color: #FFF;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  .brand-logo-img {
    height: 40px;
  }
  .brand-title {
    font-size: 0.95rem;
  }
  .brand-subtitle {
    font-size: 0.58rem;
  }
  /* Mobile menu lang row hidden on desktop (already hidden by default) */
  .mobile-lang-row {
    display: flex;
  }
}

/* ==========================================================================
   HIDE SCROLLBAR (giữ chức năng cuộn)
   ========================================================================== */
html {
  scrollbar-width: none;       /* Firefox */
  -ms-overflow-style: none;    /* IE / Edge cũ */
}
html::-webkit-scrollbar {
  display: none;               /* Chrome / Safari / Opera */
}

/* ==========================================================================
   SCROLL REVEAL ANIMATION
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.65s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

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

/* stagger children khi dùng reveal-group */
.reveal-group > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-group.revealed > *:nth-child(1) { opacity:1; transform:none; transition-delay: 0.05s; }
.reveal-group.revealed > *:nth-child(2) { opacity:1; transform:none; transition-delay: 0.15s; }
.reveal-group.revealed > *:nth-child(3) { opacity:1; transform:none; transition-delay: 0.25s; }
.reveal-group.revealed > *:nth-child(4) { opacity:1; transform:none; transition-delay: 0.35s; }
.reveal-group.revealed > *:nth-child(5) { opacity:1; transform:none; transition-delay: 0.42s; }
.reveal-group.revealed > *:nth-child(6) { opacity:1; transform:none; transition-delay: 0.49s; }
.reveal-group.revealed > *:nth-child(n+7) { opacity:1; transform:none; transition-delay: 0.55s; }

/* ==========================================================================
   FLOATING TABLE OF CONTENTS (TOC)
   ========================================================================== */
.toc-wrapper {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  display: flex;
  align-items: center;
  gap: 0;
}

.toc-toggle {
  width: 36px;
  height: 52px;
  background: var(--primary-maroon);
  border: none;
  border-radius: 8px 0 0 8px;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: -2px 0 12px rgba(0,0,0,0.15);
  transition: background 0.2s;
  order: 1;
}

.toc-toggle:hover {
  background: var(--primary-dark);
}

.toc-toggle svg {
  width: 16px;
  height: 16px;
}

.toc-panel {
  background: #fff;
  border: 1px solid var(--border-light);
  border-right: none;
  border-radius: 10px 0 0 10px;
  box-shadow: -4px 0 20px rgba(0,0,0,0.1);
  width: 0;
  overflow: hidden;
  opacity: 0;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  order: 0;
  max-height: 80vh;
  overflow-y: auto;
  scrollbar-width: none;
}

.toc-panel::-webkit-scrollbar { display: none; }

.toc-wrapper.toc-open .toc-panel {
  width: 200px;
  opacity: 1;
}

.toc-header {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-maroon);
  padding: 0.9rem 1rem 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  white-space: nowrap;
}

.toc-list {
  padding: 0.4rem 0 0.6rem;
  list-style: none;
}

.toc-list li {
  margin: 0;
}

.toc-link {
  display: block;
  padding: 0.4rem 1rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.toc-link:hover {
  color: var(--primary-maroon);
  background: rgba(128, 0, 0, 0.04);
}

.toc-link.toc-active {
  color: var(--primary-maroon);
  border-left-color: var(--accent-warm);
  font-weight: 600;
  background: rgba(128, 0, 0, 0.05);
}

@media (max-width: 768px) {
  .toc-wrapper {
    top: auto;
    bottom: 5rem;
    transform: none;
  }
}

/* Back To Top Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--primary-maroon);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(128, 0, 0, 0.35);
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.2s;
  z-index: 901;
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(0) scale(1.08);
}

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