/* ============================================
   Bầu cử QH XVI & HĐND các cấp - Landing Page
   ============================================ */

:root {
  --red: #c41e3a;
  --red-dark: #9e1830;
  --gold: #f4c430;
  --gold-light: #fde68a;
  --white: #ffffff;
  --gray-100: #f8fafc;
  --gray-200: #e2e8f0;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
}

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

body {
  font-family: 'Be Vietnam Pro', system-ui, sans-serif;
  color: var(--gray-800);
  line-height: 1.6;
  background: var(--gray-100);
  min-height: 100vh;
}

/* Header */
.header {
  background: linear-gradient(135deg, var(--red) 0%, var(--red-dark) 100%);
  color: var(--white);
  padding: 1.5rem 2rem;
  text-align: center;
  box-shadow: 0 4px 20px rgba(196, 30, 58, 0.25);
}

.header h1 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.3;
}

.header .subtitle {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  opacity: 0.95;
}

/* Banner tuyên truyền */
.banner {
  width: 100%;
  overflow: hidden;
  background: var(--gray-200);
}

.banner-img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--red) 0%, var(--red-dark) 50%);
  color: var(--white);
  padding: 3rem 2rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.hero .date-badge {
  display: inline-block;
  background: var(--gold);
  color: var(--gray-900);
  font-weight: 700;
  font-size: 2rem;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 14px rgba(0,0,0,0.2);
}

.hero h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero .time-info {
  font-size: 1.25rem;
  background: rgba(255,255,255,0.15);
  padding: 1rem 1.5rem;
  border-radius: 10px;
  margin-top: 1.5rem;
  display: inline-block;
}

.hero .time-info strong {
  color: var(--gold-light);
}

/* Main content */
.container {
  max-width: 900px;
  margin: -2rem auto 0;
  padding: 0 1.5rem 3rem;
  position: relative;
  z-index: 2;
}

.card {
  background: var(--white);
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  border: 1px solid var(--gray-200);
}

.card h3 {
  color: var(--red-dark);
  font-size: 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card h3::before {
  content: '';
  width: 4px;
  height: 1.25rem;
  background: var(--red);
  border-radius: 2px;
}

.card ul {
  list-style: none;
  padding-left: 0;
}

.card li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--red);
  font-weight: 700;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.info-item {
  background: var(--gray-100);
  padding: 1.25rem;
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--gray-200);
}

.info-item .label {
  font-size: 0.85rem;
  color: var(--gray-700);
  margin-bottom: 0.25rem;
}

.info-item .value {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--red-dark);
}

/* Notice */
.notice {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border: 2px solid var(--gold);
  border-radius: 12px;
  padding: 1.5rem;
  margin-top: 2rem;
  font-weight: 500;
  color: var(--gray-800);
}

.notice strong {
  color: var(--red-dark);
}

/* Footer */
.footer {
  background: var(--gray-800);
  color: var(--gray-200);
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.9rem;
  margin-top: 2rem;
}

.footer a {
  color: var(--gold-light);
  text-decoration: none;
}

.footer-note {
  margin-top: 0.5rem;
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 600px) {
  .header,
  .hero {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .container {
    padding: 0 1rem 2rem;
  }

  .card {
    padding: 1.5rem;
  }

  .hero .date-badge {
    font-size: 1.5rem;
    padding: 0.5rem 1rem;
  }
}