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

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

body {
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  color: #222;
  background-color: #fff;
  line-height: 1.6;
}

/* ====== Layout Helpers ====== */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 1rem;
}

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

a {
  color: #0066cc;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4 {
  line-height: 1.25;
  margin-bottom: 0.5em;
}

/* ====== Disclosure Bar ====== */
.disclosure-bar {
  background-color: #f6f6f6;
  border-bottom: 1px solid #ddd;
  font-size: 0.875rem;
  padding: 0.5rem 0;
}
.disclosure-flex {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}
.disclosure-links a {
  margin-inline: 0.25rem;
  font-weight: 500;
}

/* ====== Header ====== */
.site-header {
  background-color: #fff;
  border-bottom: 1px solid #eee;
  padding: 0.75rem 0;
}
.header-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.badge-affiliate {
  background: #ffcc00;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: bold;
  border-radius: 4px;
}
.badge-affiliate.small {
  font-size: 0.65rem;
  padding: 0.15rem 0.4rem;
}

/* ====== Hero ====== */
.hero {
  padding: 2rem 0;
  background: #f9fafb;
}
.hero__grid {
  display: grid;
  gap: 1.5rem;
}
.hero__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero__copy h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.hero__copy .subheading {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  color: #555;
}
.anchor-link {
  color: #0066cc;
  font-weight: 500;
}

/* ====== Hub ====== */
.hub {
  padding: 2rem 0;
}
.hub-group {
  margin-top: 2rem;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}
.card {
  border: 1px solid #eee;
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.card img {
  object-fit: cover;
}
.card-body {
  padding: 1rem;
}
.card-body p {
  margin-bottom: 0.75rem;
}
.read-more {
  font-weight: 500;
}

/* ====== Inline Affiliate Link ====== */
.inline-aff {
  font-weight: bold;
  color: #fff;
  background: #0066cc;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}
.inline-aff:hover {
  background: #004a99;
}

/* ====== Mid Banner ====== */
.mid-banner {
  background: #f0f8ff;
  padding: 1.5rem 0;
  margin-top: 2rem;
}
.mid__panel {
  text-align: center;
  font-size: 1.125rem;
}
.mid__panel .inline-aff {
  margin-left: 0.25rem;
}

/* ====== Final CTA ====== */
.final-cta {
  background: #ffcc00;
  padding: 2rem 0;
  text-align: center;
  margin-top: 3rem;
}
.final-cta h2 {
  margin-bottom: 0.5rem;
}
.final-cta p {
  margin-bottom: 1.25rem;
}
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-weight: bold;
  text-align: center;
  transition: background 0.2s ease;
}
.btn-primary {
  background: #0066cc;
  color: #fff;
}
.btn-primary:hover {
  background: #004a99;
}
.btn-lg {
  font-size: 1.125rem;
}
.tiny-note {
  font-size: 0.75rem;
  color: #333;
  margin-top: 0.75rem;
}

/* ====== Footer ====== */
.site-footer {
  background: #f9f9f9;
  padding: 2rem 0;
  margin-top: 3rem;
  font-size: 0.875rem;
  color: #555;
}
.footer-grid {
  display: grid;
  gap: 1.5rem;
}
.footer-links a {
  margin-right: 0.75rem;
}
.legal {
  font-size: 0.75rem;
  color: #777;
}

/* ====== Responsive ====== */
@media (min-width: 768px) {
  .hero__grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* Card images: same height, crop from top-left */
.card img{
  width: 100%;
  aspect-ratio: 16 / 9; /* đảm bảo 2 ảnh trên cùng một hàng cao bằng nhau */
  height: auto;
  object-fit: cover;      /* crop phần dư */
  object-position: top left;
  display: block;
}

/* ===== Internal Link Styling ===== */
.internal-link {
  margin: 1.5rem 0;
  padding: 0.75rem 1rem;
  background: #f9f5e6; /* nền vàng nhạt nhẹ để nổi bật */
  border-left: 4px solid #f7a600; /* vạch vàng bên trái */
  font-size: 0.95rem;
}

.internal-link a {
  color: #0066cc; /* xanh dương để dễ đọc và thân thiện */
  text-decoration: none;
  font-weight: 600;
}

.internal-link a:hover {
  color: #003366; /* xanh dậm hơn khi hover */
  text-decoration: underline;
}