/* ========================================
   AERI English Site - Global Stylesheet
   Modern International Think-Tank Design
   Colors: Deep Blue (#0A1F3F) + Gold (#C8A951)
   ======================================== */

/* CSS Variables */
:root {
  --primary: #0A1F3F;
  --primary-light: #143566;
  --primary-dark: #06132A;
  --accent: #C8A951;
  --accent-light: #D4BC74;
  --accent-dark: #A88B3D;
  --text: #2C2C2C;
  --text-light: #5A5A5A;
  --text-muted: #8A8A8A;
  --bg: #FFFFFF;
  --bg-light: #F7F8FA;
  --bg-warm: #FAFAF7;
  --border: #E2E4E8;
  --border-light: #F0F1F3;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.15);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --nav-height: 72px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--accent);
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--primary);
}

h1 { font-size: 2.75rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }

p {
  margin-bottom: 1rem;
  color: var(--text);
}

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

/* ========================================
   Navigation
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: all var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.5px;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-logo-text .name {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.02em;
}

.nav-logo-text .abbr {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: var(--bg-light);
}

.nav-links a.active {
  font-weight: 600;
}

.nav-cta {
  margin-left: 12px;
}

.nav-cta a {
  display: inline-block;
  padding: 10px 24px !important;
  background: var(--primary) !important;
  color: #fff !important;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
  font-size: 13px !important;
  letter-spacing: 0.02em;
  transition: all var(--transition) !important;
}

.nav-cta a:hover {
  background: var(--primary-light) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Language Selector */
.lang-selector {
  position: relative;
  margin-left: 8px;
}
.lang-selector-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  background: transparent;
  transition: all var(--transition);
}
.lang-selector-btn:hover {
  background: var(--accent);
  color: var(--primary-dark);
}
.lang-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  min-width: 120px;
  z-index: 100;
  overflow: hidden;
}
.lang-selector.open .lang-dropdown {
  display: block;
}
.lang-dropdown a {
  display: block;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-light);
  transition: all var(--transition);
}
.lang-dropdown a:hover {
  background: var(--bg-light);
  color: var(--primary);
}
.lang-dropdown a.current {
  color: var(--accent-dark);
  font-weight: 600;
}

@media (max-width: 768px) {
  .lang-selector {
    margin-left: 0;
    margin-top: 12px;
  }
  .lang-dropdown {
    position: static;
    margin-top: 4px;
    box-shadow: none;
    border: none;
    background: var(--bg-light);
  }
  .lang-selector.open .lang-dropdown {
    display: block;
  }
}


/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 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 nav */
@media (max-width: 900px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg);
    flex-direction: column;
    align-items: stretch;
    padding: 100px 24px 40px;
    gap: 2px;
    box-shadow: var(--shadow-xl);
    transition: right var(--transition);
    overflow-y: auto;
  }

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

  .nav-links a {
    padding: 14px 16px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 16px;
  }

  .nav-cta a {
    text-align: center;
    display: block !important;
  }
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(200, 169, 81, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg), transparent);
  pointer-events: none;
}

/* Decorative grid pattern */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200, 169, 81, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 169, 81, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 24px 100px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(200, 169, 81, 0.12);
  border: 1px solid rgba(200, 169, 81, 0.25);
  border-radius: 100px;
  color: var(--accent-light);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero h1 {
  font-size: 3.5rem;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 24px;
  max-width: 720px;
  letter-spacing: -0.03em;
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 40px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200, 169, 81, 0.35);
  color: var(--primary-dark);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

.btn-secondary {
  background: var(--primary);
  color: #fff;
}

.btn-secondary:hover {
  background: var(--primary-light);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.25rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
  .hero-content {
    padding: 60px 24px 80px;
  }
}

/* ========================================
   Section Styles
   ======================================== */
.section {
  padding: 100px 0;
}

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

.section-warm {
  background: var(--bg-warm);
}

.section-dark {
  background: var(--primary);
  color: #fff;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 60px;
}

.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 16px;
}

.section-dark .section-label {
  color: var(--accent-light);
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-light);
  font-size: 1.05rem;
}

.section-dark .section-header p {
  color: rgba(255, 255, 255, 0.65);
}

.section-dark h2 {
  color: #fff;
}

/* ========================================
   Cards
   ======================================== */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition);
}

.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
  font-size: 20px;
}

.card h3 {
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.card p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* Grid layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

@media (max-width: 900px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Stats
   ======================================== */
.stats-row {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
  padding: 40px 0;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ========================================
   News List
   ======================================== */
.news-item {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.news-item:first-child {
  padding-top: 0;
}

.news-item:hover {
  padding-left: 12px;
}

.news-date {
  flex-shrink: 0;
  width: 72px;
  text-align: center;
}

.news-date .day {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.news-date .month {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.news-body h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  transition: color var(--transition);
}

.news-item:hover .news-body h3 {
  color: var(--accent-dark);
}

.news-body p {
  color: var(--text-light);
  font-size: 0.92rem;
  margin-bottom: 8px;
}

.news-body .read-more {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-dark);
}

/* ========================================
   Page Header (Inner pages)
   ======================================== */
.page-header {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  padding: 160px 0 80px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200, 169, 81, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 169, 81, 0.04) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

.page-header-content {
  position: relative;
  z-index: 2;
}

.page-header h1 {
  color: #fff;
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.page-header p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 1.1rem;
  max-width: 600px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 13px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.5);
}

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

.breadcrumb span {
  color: rgba(255, 255, 255, 0.3);
}

.breadcrumb .current {
  color: var(--accent-light);
}

/* ========================================
   Content Pages
   ======================================== */
.content-section {
  padding: 80px 0;
}

.content-wrapper {
  max-width: 820px;
  margin: 0 auto;
}

.content-wrapper h2 {
  margin-top: 48px;
  margin-bottom: 16px;
  padding-top: 16px;
  border-top: 2px solid var(--border-light);
}

.content-wrapper h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.content-wrapper h3 {
  margin-top: 32px;
  margin-bottom: 12px;
}

.content-wrapper ul, .content-wrapper ol {
  margin: 16px 0;
  padding-left: 24px;
}

.content-wrapper li {
  margin-bottom: 8px;
  color: var(--text-light);
}

.content-wrapper strong {
  color: var(--primary);
}

.content-wrapper blockquote {
  border-left: 4px solid var(--accent);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--bg-warm);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-light);
}

/* ========================================
   Leadership Cards
   ======================================== */
.leader-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  transition: all var(--transition);
}

.leader-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.leader-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 32px;
  font-weight: 700;
}

.leader-card h3 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.leader-card .title {
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.leader-card p {
  font-size: 0.92rem;
  color: var(--text-light);
}

/* ========================================
   Form Styles
   ======================================== */
.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

.form-group label .required {
  color: #E53E3E;
  margin-left: 2px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  transition: all var(--transition);
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 31, 63, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235A5A5A' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Table
   ======================================== */
.table-wrapper {
  overflow-x: auto;
  margin: 24px 0;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.data-table th {
  background: var(--primary);
  color: #fff;
  padding: 14px 20px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.04em;
}

.data-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--text-light);
}

.data-table tr:hover td {
  background: var(--bg-light);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.6);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.92rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.footer ul {
  list-style: none;
}

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

.footer ul a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  transition: color var(--transition);
}

.footer ul a:hover {
  color: var(--accent-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(200, 169, 81, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.cta-section h2 {
  color: #fff;
  margin-bottom: 16px;
  position: relative;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 1.05rem;
  max-width: 540px;
  margin: 0 auto 32px;
  position: relative;
}

/* ========================================
   Org Chart
   ======================================== */
.org-tree {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.org-node {
  background: var(--bg);
  border: 2px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 16px 28px;
  text-align: center;
  font-weight: 600;
  color: var(--primary);
  position: relative;
}

.org-node.top {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  font-size: 1.1rem;
}

.org-connector {
  width: 2px;
  height: 32px;
  background: var(--border);
}

.org-branches {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  position: relative;
}

.org-branches::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 2px;
  background: var(--border);
}

/* ========================================
   Investment Guide Tabs
   ======================================== */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 40px;
  overflow-x: auto;
}

.tab-btn {
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--primary);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ========================================
   Accordion
   ======================================== */
.accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  padding: 18px 24px;
  background: var(--bg);
  border: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition);
}

.accordion-header:hover {
  background: var(--bg-light);
}

.accordion-header::after {
  content: '+';
  font-size: 20px;
  font-weight: 300;
  color: var(--accent-dark);
  transition: transform var(--transition);
}

.accordion-item.open .accordion-header::after {
  content: '−';
}

.accordion-body {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: all var(--transition);
}

.accordion-item.open .accordion-body {
  padding: 0 24px 20px;
  max-height: 2000px;
}

.accordion-body p,
.accordion-body li {
  font-size: 0.95rem;
  color: var(--text-light);
}

/* ========================================
   Animation
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Utility
   ======================================== */
.text-center { text-align: center; }
.text-accent { color: var(--accent-dark); }
.mt-4 { margin-top: 24px; }
.mt-8 { margin-top: 48px; }
.mb-4 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 48px; }
.fw-700 { font-weight: 700; }

.divider {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 40px 0;
}

.gold-line {
  width: 60px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin: 16px auto;
}

/* ========================================
   Timeline
   ======================================== */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -36px;
  top: 4px;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  border: 2px solid var(--bg);
}

.timeline-item h4 {
  margin-bottom: 4px;
}

.timeline-item .time {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.timeline-item p {
  font-size: 0.95rem;
  color: var(--text-light);
}

/* ========================================
   Two-column layout
   ======================================== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 768px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ========================================
   Charter Article
   ======================================== */
.article-block {
  margin: 32px 0;
}

.article-block h3 {
  color: var(--primary);
  font-size: 1.15rem;
  margin-bottom: 12px;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
  .navbar, .hamburger, .footer, .cta-section {
    display: none !important;
  }
  .hero {
    min-height: auto;
    padding: 40px 0;
  }
  .section {
    padding: 40px 0;
  }
}

/* ========================================
   Investment Guide Cards
   ======================================== */
.guide-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

.guide-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.guide-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  opacity: 0;
  transition: opacity var(--transition);
}

.guide-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

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

.guide-card-icon {
  font-size: 2rem;
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-md);
  color: var(--accent);
}

.guide-card-body {
  flex: 1;
  min-width: 0;
}

.guide-card-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-dark);
  background: rgba(200, 169, 81, 0.1);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
}

.guide-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.3;
}

.guide-card-summary {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}

.guide-card-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-dark);
  transition: color var(--transition);
}

.guide-card:hover .guide-card-link {
  color: var(--primary);
}

/* Summary table enhancements */
.summary-table td.region-name {
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}

.summary-table td {
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .guide-cards-grid {
    grid-template-columns: 1fr;
  }
  
  .guide-card {
    flex-direction: column;
    gap: 12px;
  }
  
  .guide-card-icon {
    width: 48px;
    height: 48px;
    font-size: 1.6rem;
  }
  
  .summary-table td.region-name {
    white-space: normal;
  }
}