:root {
  --primary: #1A73E8;
  --primary-dark: #1557B0;
  --accent: #00B4D8;
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --text: #1E293B;
  --text-light: #64748B;
  --border: #E2E8F0;
  --success: #0B6E4F;
  --correct: #0B6E4F;
  --correct-bg: #E6F4ED;
  --correct-border: #34A77B;
  --incorrect: #C5500F;
  --incorrect-bg: #FFF0E6;
  --incorrect-border: #E07830;
  --warning: #B45309;
  --primary-light: #E8F0FE;
  --gradient: linear-gradient(135deg, #1A73E8 0%, #00B4D8 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text); background: var(--bg); line-height: 1.6;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* Nav */
nav {
  background: white; border-bottom: 1px solid var(--border);
  padding: 14px 0; position: sticky; top: 0; z-index: 100;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
nav .container { display: flex; align-items: center; justify-content: space-between; }
nav .logo-link { display: flex; align-items: center; gap: 10px; text-decoration: none; }
nav img.logo { height: 30px; }
nav .logo-text { font-size: 17px; font-weight: 700; color: var(--primary); letter-spacing: -0.3px; }
nav .nav-links { display: flex; gap: 28px; align-items: center; }
nav .nav-links a { color: var(--text); text-decoration: none; font-weight: 500; font-size: 15px; transition: color 0.15s; }
nav .nav-links a:hover { color: var(--primary); }
.btn-download {
  background: var(--primary); color: white !important; padding: 10px 22px;
  border-radius: 8px; text-decoration: none !important; font-weight: 600; font-size: 14px;
  transition: background 0.2s, transform 0.2s; white-space: nowrap;
}
.btn-download:hover { background: var(--primary-dark); transform: translateY(-1px); }

/* Hero */
.hero {
  background: var(--gradient); color: white; padding: 80px 0 60px;
  text-align: center; position: relative; overflow: hidden;
}
.hero::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 60px;
  background: var(--bg); clip-path: ellipse(55% 100% at 50% 100%);
}
.hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 12px; }
.hero .subtitle { font-size: 1.2rem; opacity: 0.9; max-width: 600px; margin: 0 auto 24px; }
.hero .stats { display: flex; justify-content: center; gap: 48px; margin-top: 32px; }
.hero .stat-item { text-align: center; }
.hero .stat-num { font-size: 2rem; font-weight: 800; }
.hero .stat-label { font-size: 0.85rem; opacity: 0.8; }

/* Exam page hero */
.exam-hero {
  background: var(--gradient); color: white; padding: 60px 0 50px;
  position: relative; overflow: hidden;
}
.exam-hero::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 40px;
  background: var(--bg); clip-path: ellipse(55% 100% at 50% 100%);
}
.exam-hero .breadcrumb { font-size: 14px; opacity: 0.7; margin-bottom: 12px; }
.exam-hero .breadcrumb a { color: white; text-decoration: underline; }
.exam-hero h1 { font-size: 2.2rem; font-weight: 800; margin-bottom: 8px; }
.exam-hero .exam-meta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 16px; font-size: 14px; }
.exam-hero .meta-tag {
  background: rgba(255,255,255,0.2); padding: 4px 14px; border-radius: 20px;
}

/* Cards & Grid */
.section { padding: 60px 0; }
.section-title { font-size: 1.6rem; font-weight: 700; margin-bottom: 32px; text-align: center; }

.exam-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.exam-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 24px; transition: all 0.2s; text-decoration: none; color: var(--text);
  display: block;
}
.exam-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); border-color: var(--primary); }
.exam-card .card-category { font-size: 12px; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.exam-card h3 { font-size: 1.1rem; margin: 8px 0 6px; font-weight: 700; }
.exam-card .card-country { font-size: 13px; color: var(--text-light); }
.exam-card .card-stats { display: flex; gap: 12px; margin-top: 12px; font-size: 13px; }
.exam-card .card-stats span { background: #F1F5F9; padding: 3px 10px; border-radius: 6px; }

/* Exam detail info */
.info-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px; margin: 32px 0;
}
.info-item {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 20px; text-align: center;
}
.info-item .info-icon { font-size: 28px; margin-bottom: 8px; }
.info-item .info-label { font-size: 12px; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.5px; }
.info-item .info-value { font-size: 1.1rem; font-weight: 700; margin-top: 4px; }

/* What we offer */
.offer-section { background: white; border-radius: 16px; padding: 40px; margin: 32px 0; border: 1px solid var(--border); }
.offer-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; margin-top: 24px; }
.offer-item { text-align: center; padding: 16px; }
.offer-item .offer-icon { font-size: 36px; margin-bottom: 8px; }
.offer-item h4 { font-size: 15px; font-weight: 700; }
.offer-item p { font-size: 13px; color: var(--text-light); margin-top: 4px; }

/* Pricing */
.pricing-section { padding: 60px 0; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 900px; margin: 0 auto; }
.pricing-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px;
  padding: 32px 24px; text-align: center; position: relative;
}
.pricing-card.featured { border-color: var(--primary); box-shadow: 0 8px 32px rgba(0,102,204,0.15); }
.pricing-card.featured::before {
  content: 'MOST POPULAR'; position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--gradient); color: white; padding: 4px 16px; border-radius: 20px;
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
}
.pricing-card .plan-name { font-size: 14px; font-weight: 700; color: var(--primary); text-transform: uppercase; }
.pricing-card .price { font-size: 2.4rem; font-weight: 800; margin: 12px 0 4px; }
.pricing-card .price-period { font-size: 13px; color: var(--text-light); }
.pricing-card ul { list-style: none; margin: 20px 0; text-align: left; }
.pricing-card ul li { padding: 6px 0; font-size: 14px; }
.pricing-card ul li::before { content: '✓ '; color: var(--success); font-weight: 700; }
.pricing-card .btn-plan {
  display: block; padding: 12px; border-radius: 10px; text-decoration: none;
  font-weight: 700; font-size: 15px; margin-top: 16px; transition: all 0.2s;
}
.pricing-card .btn-plan.primary { background: var(--gradient); color: white; }
.pricing-card .btn-plan.secondary { background: #F1F5F9; color: var(--primary); }
.pricing-card .btn-plan:hover { transform: translateY(-1px); }

/* Sections */
.sections-list { margin: 32px 0; }
.sections-list h3 { font-size: 1.1rem; margin-bottom: 16px; }
.sections-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.section-tag {
  background: #EFF6FF; color: var(--primary); padding: 6px 14px;
  border-radius: 8px; font-size: 13px; font-weight: 500;
}

/* Translated block */
.translated-section {
  background: #FFFBEB; border: 1px solid #FDE68A; border-radius: 12px;
  padding: 32px; margin: 32px 0;
}
.translated-section h3 { margin-bottom: 16px; }

/* CTA */
.cta-section {
  background: var(--gradient); color: white; padding: 60px 0;
  text-align: center; margin-top: 40px;
}
.cta-section h2 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; }
.cta-section p { opacity: 0.9; max-width: 500px; margin: 0 auto 24px; }
.store-badges { display: flex; justify-content: center; gap: 16px; }
.store-badges img { height: 48px; border-radius: 8px; }

/* Footer */
footer {
  background: #1E293B; color: #94A3B8; padding: 40px 0 24px;
  font-size: 14px; text-align: center;
}
footer a { color: #CBD5E1; text-decoration: none; }

/* Search */
.search-box {
  max-width: 500px; margin: 0 auto 40px; position: relative;
}
.search-box input {
  width: 100%; padding: 14px 20px 14px 48px; border: 2px solid var(--border);
  border-radius: 12px; font-size: 16px; outline: none; transition: border 0.2s;
}
.search-box input:focus { border-color: var(--primary); }
.search-box::before {
  content: '🔍'; position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  font-size: 18px;
}

/* Category filter */
.category-pills { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 32px; }
.category-pill {
  padding: 6px 16px; border-radius: 20px; border: 1px solid var(--border);
  background: white; cursor: pointer; font-size: 13px; font-weight: 500; transition: all 0.2s;
}
.category-pill.active, .category-pill:hover { background: var(--primary); color: white; border-color: var(--primary); }

@media (max-width: 768px) {
  .hero h1 { font-size: 1.8rem; }
  .hero .stats { flex-direction: column; gap: 16px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .exam-grid { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
}