/* ============================================================
   MB Theme — nhận diện MB cho web đào tạo MB HNO
   Palette (xấp xỉ theo logo MB): Navy #141B4D · Red #E4002B
   Gồm: (1) palette Material, (2) trang chủ hero + thẻ module,
        (3) tinh chỉnh toàn cục (bảng, heading, tabs)
   ============================================================ */

/* ---------- 1. Palette Material (theme.palette.primary: custom) ---------- */

[data-md-color-scheme="default"] {
  --md-primary-fg-color: #141B4D;
  --md-primary-fg-color--light: #3A4685;
  --md-primary-fg-color--dark: #0C1233;
  --md-accent-fg-color: #E4002B;
  --md-accent-fg-color--transparent: rgba(228, 0, 43, 0.08);
  --md-typeset-a-color: #1E4FA3;
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color: #141B4D;
  --md-primary-fg-color--light: #3A4685;
  --md-primary-fg-color--dark: #0C1233;
  --md-accent-fg-color: #FF4D6D;
  --md-accent-fg-color--transparent: rgba(255, 77, 109, 0.08);
  --md-typeset-a-color: #8FA8FF;
}

/* Header đổ bóng nhẹ cho tách khỏi nền */
.md-header { box-shadow: 0 1px 6px rgba(12, 18, 51, 0.25); }

/* Dòng liên hệ nhỏ ở header, cạnh logo — ẩn trên màn hình hẹp để không vỡ layout */
.mb-header-contact {
  display: none;
  color: rgba(255, 255, 255, 0.75);
  font-size: 12px;
  white-space: nowrap;
  margin-right: 12px;
}

@media screen and (min-width: 76.25em) {
  .mb-header-contact { display: inline-block; }
}

/* Tab đang active: gạch chân đỏ MB */
.md-tabs__item--active .md-tabs__link {
  box-shadow: inset 0 -2px 0 #E4002B;
  font-weight: 700;
}

/* ---------- 2. Trang chủ — hero ---------- */

.mb-hero {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  padding: 44px 44px 40px;
  margin: 8px 0 36px;
  background: linear-gradient(135deg, #0C1233 0%, #141B4D 45%, #24358F 100%);
  color: #fff;
}

/* Ngôi sao MB mờ trang trí góc phải */
.mb-hero::after {
  content: "★";
  position: absolute;
  right: -30px;
  top: -55px;
  font-size: 260px;
  line-height: 1;
  color: rgba(228, 0, 43, 0.18);
  transform: rotate(12deg);
  pointer-events: none;
}

.mb-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.mb-hero-badge .mb-star { color: #FF4D6D; font-size: 15px; }

.md-typeset .mb-hero h1 {
  color: #fff;
  margin: 14px 0 10px;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.mb-hero-sub {
  max-width: 640px;
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.85);
}

.mb-hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.md-typeset .mb-btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 14.5px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.md-typeset .mb-btn--primary {
  background: #E4002B;
  color: #fff;
  box-shadow: 0 4px 14px rgba(228, 0, 43, 0.35);
}
.md-typeset .mb-btn--primary:hover {
  background: #C50025;
  color: #fff;
  transform: translateY(-2px);
}

.md-typeset .mb-btn--ghost {
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.md-typeset .mb-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  transform: translateY(-2px);
}

/* ---------- 2b. Trang chủ — tiêu đề section ---------- */

.md-typeset h2.mb-section-title {
  margin: 34px 0 4px;
  font-size: 24px;
  font-weight: 700;
  color: var(--md-default-fg-color);
  border-bottom: none;
  padding-bottom: 0;
}

.md-typeset h2.mb-section-title::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 4px;
  border-radius: 2px;
  background: #E4002B;
  margin-right: 12px;
  vertical-align: 6px;
}

.mb-section-sub {
  margin: 0 0 18px;
  color: var(--md-default-fg-color--light);
  font-size: 14.5px;
}

/* ---------- 2c. Trang chủ — lưới thẻ module ---------- */

.mb-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 0 0 12px;
}

@media (max-width: 768px) {
  .mb-grid { grid-template-columns: 1fr; }
  .mb-hero { padding: 30px 24px; }
  .md-typeset .mb-hero h1 { font-size: 28px; }
}

.md-typeset a.mb-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 22px 18px;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-top: 4px solid var(--card-color, #141B4D);
  border-radius: 12px;
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.md-typeset a.mb-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(20, 27, 77, 0.14);
  border-color: var(--card-color, #141B4D);
  border-top-width: 4px;
  color: var(--md-default-fg-color);
}

.mb-card-top {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mb-card-icon { font-size: 26px; line-height: 1; }

.mb-card-kicker {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--card-color, #141B4D);
}

.md-typeset .mb-card h3 {
  margin: 4px 0 2px;
  font-size: 19px;
  font-weight: 700;
  color: var(--md-default-fg-color);
}

.md-typeset .mb-card p {
  margin: 0 0 10px;
  font-size: 13.8px;
  line-height: 1.6;
  color: var(--md-default-fg-color--light);
}

.mb-card-go {
  margin-top: auto;
  font-size: 14px;
  font-weight: 700;
  color: var(--card-color, #141B4D);
}

[data-md-color-scheme="slate"] .md-typeset a.mb-card {
  background: var(--md-code-bg-color);
}
[data-md-color-scheme="slate"] .md-typeset a.mb-card:hover {
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}

/* ---------- 2d. Trang chủ — thẻ học liệu nhỏ ---------- */

.mb-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

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

.md-typeset .mb-mini {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--md-default-fg-color);
  text-decoration: none;
  background: var(--md-default-bg-color);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.md-typeset a.mb-mini:hover {
  transform: translateY(-2px);
  border-color: #1E4FA3;
  box-shadow: 0 6px 18px rgba(20, 27, 77, 0.1);
  color: var(--md-default-fg-color);
}

.mb-mini strong { display: block; margin-bottom: 3px; }

.mb-mini--soon { opacity: 0.62; }
.mb-mini--soon em { color: var(--md-default-fg-color--light); font-size: 12.5px; }

[data-md-color-scheme="slate"] .md-typeset .mb-mini {
  background: var(--md-code-bg-color);
}

/* ---------- 3. Tinh chỉnh toàn cục ---------- */

/* Bảng: header nền xanh nhạt, chữ navy, hover dòng */
.md-typeset table:not([class]) {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 10px;
  overflow: hidden;
  font-size: 14px;
}

.md-typeset table:not([class]) th {
  background: #EEF2FA;
  color: #141B4D;
  font-weight: 700;
  border-bottom: 2px solid #C9D4EC;
}

.md-typeset table:not([class]) tbody tr:hover {
  background: rgba(30, 79, 163, 0.045);
  box-shadow: none;
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) th {
  background: #222948;
  color: #E6EAFF;
  border-bottom: 2px solid #39406B;
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) tbody tr:hover {
  background: rgba(143, 168, 255, 0.06);
}

/* Heading cấp 2 trong trang nội dung: kẻ chân mảnh */
.md-typeset h2 {
  padding-bottom: 6px;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

/* Blockquote: viền navy nhạt thay xám */
.md-typeset blockquote {
  border-left-color: #3A4685;
}