/**
 * VNKR.VN — UI Component Library
 * ================================
 * File: vnkr-ui.css
 * Phụ thuộc: vnkr-tokens.css (phải import trước)
 * Mô tả: Toàn bộ component classes của hệ thống UI VNKR — có thể tái sử dụng
 *        trong bất kỳ trang nào của dự án.
 *
 * Cách dùng:
 *   <link rel="stylesheet" href="/assets/css/vnkr-tokens.css">
 *   <link rel="stylesheet" href="/assets/css/vnkr-ui.css">
 *
 * Mục lục:
 *   1.  NAV / HEADER
 *   2.  HERO SECTION
 *   3.  SECTION WRAPPER
 *   4.  BUTTONS
 *   5.  BADGES & TAGS
 *   6.  CARDS (generic)
 *   7.  IDENTITY CARD
 *   8.  COLOR SWATCH
 *   9.  TYPOGRAPHY SHOWCASE
 *   10. CHECKLIST
 *   11. PROGRESS BAR
 *   12. DATA TABLE
 *   13. CODE BLOCK
 *   14. GRID LAYOUTS
 *   15. ROADMAP CARD
 *   16. STAT BLOCK
 *   17. TECH CARD
 *   18. REVENUE CARD
 *   19. PERSONA CARD
 *   20. PYRAMID
 *   21. FOOTER
 *   22. RESPONSIVE
 *   23. HAMBURGER NAV TOGGLE
 *   24. CHUYÊN MỤC CARD (cm-*)
 *   25. LEGAL CARD
 *   26. SUB-HEADING & KPI LABEL
 *   27. CARD META / EXCERPT / FOOTER
 *   28. CALLOUT / ALERT BOX          ← Giai đoạn 1
 *   29. INPUT / FORM ELEMENTS        ← Giai đoạn 1
 *   30. SKELETON LOADING             ← Giai đoạn 2
 *   31. MODAL / DIALOG               ← Giai đoạn 2
 *   32. TIMELINE                     ← Giai đoạn 2
 */


/* ══════════════════════════════════════════════
   1. NAV / HEADER
   ══════════════════════════════════════════════ */

.vnkr-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--brand);
    border-bottom: 3px solid var(--accent);
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

/* Scrolled state — glassmorphism khi cuộn > 60px */
.vnkr-nav--scrolled {
    background: color-mix(in srgb, var(--brand) 88%, transparent);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 2px 20px rgba(10,61,98,0.18);
}

.vnkr-nav-logo {
    font-size: 22px;
    font-weight: var(--fw-extrabold);
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.5px;
    text-decoration: none;
}

.vnkr-nav-logo .logo-vn { color: var(--white); }
.vnkr-nav-logo .logo-kr { color: var(--gold); }

.vnkr-nav-logo .logo-badge {
    background: var(--accent);
    color: var(--white);
    font-size: var(--text-xs);
    font-weight: var(--fw-bold);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    letter-spacing: 0.5px;
}

.vnkr-nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
}

.vnkr-nav-links a {
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    font-size: var(--text-base);
    font-weight: var(--fw-medium);
    transition: color var(--transition-base);
    border-radius: var(--radius-sm);
    padding: 2px 4px;
}

.vnkr-nav-links a:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
}

.vnkr-nav-links a:hover,
.vnkr-nav-links a.active {
    color: var(--gold);
    text-decoration: none;
}


/* ══════════════════════════════════════════════
   2. HERO SECTION
   ══════════════════════════════════════════════ */

.vnkr-hero {
    position: relative;
    overflow: hidden;
    padding: 80px 40px 64px;
    text-align: center;
    background: linear-gradient(160deg, #0A3D62 0%, #0d4f80 60%, #1a6299 100%);
}

.vnkr-hero-tag {
    display: inline-block;
    background: var(--accent);
    color: var(--white);
    font-size: var(--text-sm);
    font-weight: var(--fw-bold);
    letter-spacing: 1.5px;
    padding: 5px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 20px;
    text-transform: uppercase;
}

.vnkr-hero h1 {
    font-size: var(--text-hero);
    font-weight: var(--fw-extrabold);
    line-height: var(--lh-tight);
    letter-spacing: -2px;
    margin-bottom: 16px;
    color: var(--white);
}

.vnkr-hero h1 .accent-vn  { color: var(--white); }
.vnkr-hero h1 .accent-kr  { color: var(--gold); }
.vnkr-hero h1 .accent-dot { color: var(--accent); }

.vnkr-hero-slogan {
    font-size: var(--text-xl);
    font-weight: var(--fw-medium);
    color: rgba(255,255,255,0.8);
    margin-bottom: 8px;
}

.vnkr-hero-slogan2 {
    font-size: var(--text-md);
    color: rgba(255,255,255,0.55);
    margin-bottom: 36px;
}

.vnkr-hero-btns {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Stats bar bên dưới hero */
.vnkr-hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 56px;
    padding-top: 36px;
    border-top: 1px solid rgba(255,255,255,0.15);
}

.vnkr-stat { text-align: center; }

.vnkr-stat-num {
    font-size: 34px;
    font-weight: var(--fw-extrabold);
    color: var(--gold);
}

.vnkr-stat-label {
    font-size: var(--text-xs);
    font-weight: var(--fw-medium);
    color: rgba(255,255,255,0.6);
    margin-top: 4px;
}


/* ══════════════════════════════════════════════
   3. SECTION WRAPPER
   ══════════════════════════════════════════════ */

.vnkr-section {
    padding: var(--p-section);
    background: var(--bg);
    transition: background var(--transition-base), color var(--transition-base);
}

/* Section trắng (xen kẽ) */
.vnkr-section--alt {
    background: var(--bg-card);
}

/* Section nền thương hiệu */
.vnkr-section--dark {
    background: var(--brand);
    color: var(--white);
}

.vnkr-section-title {
    font-size: var(--text-4xl);
    font-weight: var(--fw-extrabold);
    letter-spacing: -0.8px;
    margin-bottom: 8px;
    color: var(--brand);
}

.vnkr-section--dark .vnkr-section-title {
    color: var(--gold);
}

.vnkr-section-sub {
    font-size: var(--text-lg);
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 560px;
    line-height: var(--lh-relaxed);
}

.vnkr-section--dark .vnkr-section-sub {
    color: rgba(255,255,255,0.65);
}


/* ══════════════════════════════════════════════
   4. BUTTONS
   ══════════════════════════════════════════════ */

/* Base button */
.vnkr-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-main);
    font-size: var(--text-md);
    font-weight: var(--fw-bold);
    padding: 13px 32px;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition:
        transform var(--transition-fast),
        box-shadow var(--transition-fast),
        border-color var(--transition-base),
        color var(--transition-base);
    white-space: nowrap;
}

.vnkr-btn:hover { text-decoration: none; }

.vnkr-btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.vnkr-btn--primary:focus-visible,
.vnkr-btn--danger:focus-visible  {
    box-shadow: var(--focus-ring-accent);
}

/* Primary — accent đỏ */
.vnkr-btn--primary {
    background: var(--accent);
    color: var(--white);
    box-shadow: var(--shadow-accent);
}

.vnkr-btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent-hover);
    color: var(--white);
}

/* Outline — trên nền tối */
.vnkr-btn--outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.45);
}

.vnkr-btn--outline:hover {
    border-color: var(--gold);
    color: var(--gold);
    transform: translateY(-2px);
}

/* Outline — trên nền sáng */
.vnkr-btn--outline-dark {
    background: transparent;
    color: var(--brand);
    border: 2px solid var(--brand);
}

.vnkr-btn--outline-dark:hover {
    background: var(--brand);
    color: var(--white);
}

/* Brand */
.vnkr-btn--brand {
    background: var(--brand);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.vnkr-btn--brand:hover {
    background: var(--brand-alt);
    transform: translateY(-2px);
    color: var(--white);
}

/* Ghost — trên nền sáng */
.vnkr-btn--ghost {
    background: transparent;
    color: var(--brand);
    border: 2px solid var(--border);
}

.vnkr-btn--ghost:hover {
    border-color: var(--brand-alt);
    color: var(--brand-alt);
    transform: translateY(-1px);
}

/* Danger */
.vnkr-btn--danger {
    background: var(--accent);
    color: var(--white);
    border: 2px solid var(--accent);
}

.vnkr-btn--danger:hover {
    background: #c93410;
    border-color: #c93410;
    color: var(--white);
    transform: translateY(-1px);
}

/* Sizes */
.vnkr-btn--sm { font-size: var(--text-base); padding: 9px 20px; }
.vnkr-btn--lg { font-size: var(--text-xl);   padding: 16px 40px; }
.vnkr-btn--full { width: 100%; justify-content: center; }

/* Loading state — aria-busy="true" */
.vnkr-btn[aria-busy="true"] {
    pointer-events: none;
    opacity: 0.7;
    position: relative;
}

.vnkr-btn[aria-busy="true"]::after {
    content: '';
    display: inline-block;
    width: 13px;
    height: 13px;
    margin-left: 6px;
    border: 2px solid rgba(255,255,255,0.35);
    border-top-color: currentColor;
    border-radius: 50%;
    animation: vnkr-spin 0.65s linear infinite;
    vertical-align: middle;
}

@keyframes vnkr-spin {
    to { transform: rotate(360deg); }
}


/* ══════════════════════════════════════════════
   5. BADGES & TAGS
   ══════════════════════════════════════════════ */

/* Badge inline */
.vnkr-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: var(--text-sm);
    font-weight: var(--fw-bold);
    padding: 3px 10px;
    border-radius: var(--radius-full);
}

.vnkr-badge--success  { background: var(--success-light);  color: var(--success-text); }
.vnkr-badge--warning  { background: var(--warning-light);  color: var(--warning-text); }
.vnkr-badge--error    { background: var(--error-light);    color: var(--error-text); }
.vnkr-badge--info     { background: var(--info-light);     color: var(--info-text); }
.vnkr-badge--brand    { background: var(--brand-light);    color: var(--brand); }
.vnkr-badge--gold     { background: var(--gold-light);     color: var(--warning-text); }

/* Tag nhỏ trên card */
.vnkr-tag {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--fw-semibold);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--brand-light);
    color: var(--brand);
}

.vnkr-tag--gold    { background: var(--gold-light);   color: var(--warning-text); }
.vnkr-tag--accent  { background: var(--error-light);  color: var(--accent); }
.vnkr-tag--success { background: var(--success-light); color: var(--success-text); }

/* Overline label */
.vnkr-overline {
    font-size: var(--text-sm);
    font-weight: var(--fw-bold);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--accent);
}


/* ══════════════════════════════════════════════
   6. CARDS (generic)
   ══════════════════════════════════════════════ */

.vnkr-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--p-card);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.vnkr-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.vnkr-card--sm {
    padding: var(--p-card-sm);
}

.vnkr-card--flat {
    box-shadow: none;
}

.vnkr-card--border-accent {
    border-color: var(--accent);
}

.vnkr-card--border-gold {
    border-color: var(--gold);
}

.vnkr-card-title {
    font-size: var(--text-lg);
    font-weight: var(--fw-bold);
    color: var(--brand);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.vnkr-card-meta {
    font-size: var(--text-xs);
    font-weight: var(--fw-semibold);
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.vnkr-card-excerpt {
    font-size: var(--text-md);
    color: var(--text-muted);
    line-height: var(--lh-relaxed);
    margin-bottom: 14px;
}

.vnkr-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.vnkr-card-body {
    font-size: var(--text-md);
    color: var(--text-muted);
    line-height: var(--lh-normal);
}

.vnkr-card-body strong { color: var(--text); }


/* ══════════════════════════════════════════════
   7. IDENTITY CARD
   ══════════════════════════════════════════════ */

.vnkr-identity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.vnkr-identity-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--p-card);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.vnkr-identity-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.vnkr-identity-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 14px;
}

.vnkr-identity-card h3 {
    font-size: var(--text-lg);
    font-weight: var(--fw-bold);
    color: var(--brand);
    margin-bottom: 6px;
}

.vnkr-identity-value {
    font-size: var(--text-md);
    color: var(--text-muted);
    line-height: var(--lh-normal);
}

.vnkr-identity-value strong { color: var(--text); }


/* ══════════════════════════════════════════════
   8. COLOR SWATCH
   ══════════════════════════════════════════════ */

.vnkr-palette-wrap {
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 1.5px solid var(--border);
    padding: 28px;
    margin-bottom: 28px;
}

.vnkr-palette-label {
    font-size: var(--text-xs);
    font-weight: var(--fw-bold);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.vnkr-color-row {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    align-items: flex-end;
}

.vnkr-color-swatch { text-align: center; }

.vnkr-swatch-box {
    width: 84px;
    height: 60px;
    border-radius: var(--radius-md);
    border: 1.5px solid rgba(0,0,0,0.08);
    margin-bottom: 8px;
}

.vnkr-swatch-name {
    font-size: var(--text-sm);
    font-weight: var(--fw-semibold);
    color: var(--text);
}

.vnkr-swatch-hex {
    font-size: var(--text-xs);
    color: var(--text-muted);
}


/* ══════════════════════════════════════════════
   9. TYPOGRAPHY SHOWCASE
   ══════════════════════════════════════════════ */

.vnkr-type-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.vnkr-type-row {
    display: flex;
    align-items: baseline;
    gap: 24px;
    background: var(--bg-section);
    border-radius: var(--radius-lg);
    padding: 16px 24px;
    border: 1px solid var(--border);
}

.vnkr-type-meta {
    width: 160px;
    flex-shrink: 0;
}

.vnkr-type-token {
    font-size: var(--text-sm);
    font-weight: var(--fw-bold);
    color: var(--brand);
    margin-bottom: 2px;
    font-family: var(--font-mono);
}

.vnkr-type-spec {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.vnkr-type-sample {
    color: var(--text);
}


/* ══════════════════════════════════════════════
   10. CHECKLIST
   ══════════════════════════════════════════════ */

.vnkr-checklist {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 640px;
}

.vnkr-check-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    border: 1px solid var(--border);
    font-size: var(--text-base);
    line-height: var(--lh-snug);
}

.vnkr-check-icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: var(--fw-bold);
    flex-shrink: 0;
}

/* Trạng thái icon */
.vnkr-check-icon--done  { background: var(--success-light); color: var(--success-text); }
.vnkr-check-icon--now   { background: var(--error-light);   color: var(--accent); }
.vnkr-check-icon--soon  { background: var(--gold-light);    color: var(--warning-text); }
.vnkr-check-icon--todo  { background: var(--bg-section);    color: var(--text-muted); }


/* ══════════════════════════════════════════════
   11. PROGRESS BAR
   ══════════════════════════════════════════════ */

.vnkr-progress-wrap {
    max-width: 560px;
    margin-bottom: 32px;
}

.vnkr-progress-label {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    font-weight: var(--fw-semibold);
    color: var(--text-muted);
    margin-bottom: 6px;
}

.vnkr-progress-label span:last-child {
    font-weight: var(--fw-bold);
    color: var(--success-text);
}

.vnkr-progress-bg {
    background: var(--border);
    border-radius: var(--radius-full);
    height: 8px;
    margin-bottom: 14px;
    overflow: hidden;
}

.vnkr-progress-fill {
    height: 100%;
    border-radius: var(--radius-full);
    background: var(--brand);
    transition: width 0.6s ease;
}

.vnkr-progress-fill--accent  { background: var(--accent); }
.vnkr-progress-fill--gold    { background: var(--gold); }
.vnkr-progress-fill--success { background: var(--success); }
.vnkr-progress-fill--alt     { background: var(--brand-alt); }


/* ══════════════════════════════════════════════
   12. DATA TABLE
   ══════════════════════════════════════════════ */

.vnkr-table-wrap {
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 1.5px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-bottom: 28px;
}

.vnkr-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-base);
}

.vnkr-table th {
    background: var(--brand);
    color: var(--white);
    padding: 12px 16px;
    text-align: left;
    font-weight: var(--fw-bold);
    font-size: var(--text-xs);
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.vnkr-table td {
    padding: 11px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.vnkr-table tr:last-child td { border-bottom: none; }

.vnkr-table tr:hover td { background: var(--bg-section); }

.vnkr-table .col-metric { font-weight: var(--fw-semibold); color: var(--brand); }
.vnkr-table .col-muted  { color: var(--text-muted); }
.vnkr-table .col-target { font-weight: var(--fw-bold); color: var(--success-text); }


/* ══════════════════════════════════════════════
   13. CODE BLOCK
   ══════════════════════════════════════════════ */

.vnkr-code-block {
    background: #0d1f2d;
    border-radius: var(--radius-xl);
    padding: 24px;
    overflow-x: auto;
    border: 1.5px solid rgba(255,255,255,0.08);
    box-shadow: 0 4px 16px rgba(0,0,0,0.25);
    margin-top: 16px;
}

.vnkr-code-block code {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: #7dd3fc;
    line-height: var(--lh-loose);
    white-space: pre;
    display: block;
}

/* Syntax highlighting helpers */
.code-comment { color: #4a6a85; }
.code-prop    { color: #c084fc; }
.code-val     { color: #86efac; }
.code-str     { color: #fde68a; }
.code-key     { color: #93c5fd; }


/* ══════════════════════════════════════════════
   14. GRID LAYOUTS
   ══════════════════════════════════════════════ */

/* Grid tự động — minmax 260px */
.vnkr-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.vnkr-grid--sm {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 14px;
}

.vnkr-grid--md {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.vnkr-grid--lg {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

/* 2 cột cố định */
.vnkr-grid--2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* 3 cột cố định */
.vnkr-grid--3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}


/* ══════════════════════════════════════════════
   15. ROADMAP CARD
   ══════════════════════════════════════════════ */

.vnkr-roadmap-card {
    border-radius: var(--radius-xl);
    padding: 24px 22px;
    border: 1.5px solid;
}

.vnkr-roadmap-card h3 {
    font-size: var(--text-lg);
    font-weight: var(--fw-bold);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.vnkr-roadmap-period {
    font-size: var(--text-xs);
    font-weight: var(--fw-semibold);
    opacity: 0.7;
    margin-bottom: 14px;
}

.vnkr-roadmap-items {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.vnkr-roadmap-item {
    font-size: var(--text-xs);
    display: flex;
    align-items: flex-start;
    gap: 7px;
    line-height: var(--lh-snug);
}

.vnkr-roadmap-item::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 6px;
}

/* Color variants */
.vnkr-roadmap-card--p0 { background: var(--info-light);    border-color: var(--brand-alt); }
.vnkr-roadmap-card--p0 h3 { color: var(--brand); }
.vnkr-roadmap-card--p0 .vnkr-roadmap-period { color: var(--brand-alt); }
.vnkr-roadmap-card--p0 .vnkr-roadmap-item   { color: #1e3a5f; }
.vnkr-roadmap-card--p0 .vnkr-roadmap-item::before { background: var(--brand-alt); }

.vnkr-roadmap-card--p1 { background: var(--warning-light); border-color: var(--gold); }
.vnkr-roadmap-card--p1 h3 { color: var(--warning-text); }
.vnkr-roadmap-card--p1 .vnkr-roadmap-period { color: var(--gold); }
.vnkr-roadmap-card--p1 .vnkr-roadmap-item   { color: #5a3e00; }
.vnkr-roadmap-card--p1 .vnkr-roadmap-item::before { background: var(--gold); }

.vnkr-roadmap-card--p2 { background: var(--error-light);   border-color: var(--accent); }
.vnkr-roadmap-card--p2 h3 { color: var(--error-text); }
.vnkr-roadmap-card--p2 .vnkr-roadmap-period { color: var(--accent); }
.vnkr-roadmap-card--p2 .vnkr-roadmap-item   { color: #6b1c09; }
.vnkr-roadmap-card--p2 .vnkr-roadmap-item::before { background: var(--accent); }

.vnkr-roadmap-card--p3 { background: var(--success-light); border-color: var(--success); }
.vnkr-roadmap-card--p3 h3 { color: var(--success-text); }
.vnkr-roadmap-card--p3 .vnkr-roadmap-period { color: var(--success); }
.vnkr-roadmap-card--p3 .vnkr-roadmap-item   { color: #00523c; }
.vnkr-roadmap-card--p3 .vnkr-roadmap-item::before { background: var(--success); }


/* ══════════════════════════════════════════════
   16. STAT BLOCK
   ══════════════════════════════════════════════ */

.vnkr-stats-row {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.vnkr-stat-block { text-align: center; }

.vnkr-stat-block-num {
    font-size: var(--text-5xl);
    font-weight: var(--fw-extrabold);
    color: var(--brand);
    line-height: 1;
}

.vnkr-stat-block-num--gold    { color: var(--gold); }
.vnkr-stat-block-num--accent  { color: var(--accent); }
.vnkr-stat-block-num--success { color: var(--success); }

.vnkr-stat-block-label {
    font-size: var(--text-sm);
    font-weight: var(--fw-medium);
    color: var(--text-muted);
    margin-top: 4px;
}


/* ══════════════════════════════════════════════
   17. TECH CARD
   ══════════════════════════════════════════════ */

.vnkr-tech-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 18px 16px;
    border: 1.5px solid var(--border);
    display: flex;
    align-items: center;
    gap: 14px;
    transition: box-shadow var(--transition-base);
}

.vnkr-tech-card:hover {
    box-shadow: var(--shadow-md);
}

.vnkr-tech-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.vnkr-tech-name {
    font-size: var(--text-base);
    font-weight: var(--fw-bold);
    color: var(--brand);
}

.vnkr-tech-desc {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-top: 2px;
    line-height: var(--lh-snug);
}


/* ══════════════════════════════════════════════
   18. REVENUE CARD
   ══════════════════════════════════════════════ */

.vnkr-revenue-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--p-card-sm);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.vnkr-revenue-phase {
    font-size: var(--text-xs);
    font-weight: var(--fw-bold);
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.vnkr-revenue-title {
    font-size: var(--text-lg);
    font-weight: var(--fw-bold);
    color: var(--brand);
    margin-bottom: 8px;
}

.vnkr-revenue-amount {
    font-size: 22px;
    font-weight: var(--fw-extrabold);
    color: var(--success);
}

.vnkr-revenue-desc {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: 6px;
    line-height: var(--lh-snug);
}


/* ══════════════════════════════════════════════
   19. PERSONA CARD
   ══════════════════════════════════════════════ */

.vnkr-persona-card {
    border-radius: var(--radius-xl);
    padding: 26px 22px;
    border: 2px solid;
}

.vnkr-persona-card--p1 { background: var(--brand-light); border-color: var(--brand-alt); }
.vnkr-persona-card--p2 { background: var(--gold-light);  border-color: var(--gold); }
.vnkr-persona-card--p3 { background: var(--info-light);  border-color: var(--brand-alt); }

.vnkr-persona-tag {
    font-size: var(--text-xs);
    font-weight: var(--fw-bold);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.vnkr-persona-card--p1 .vnkr-persona-tag { color: var(--brand); }
.vnkr-persona-card--p2 .vnkr-persona-tag { color: var(--warning-text); }
.vnkr-persona-card--p3 .vnkr-persona-tag { color: var(--brand-alt); }

.vnkr-persona-name {
    font-size: var(--text-2xl);
    font-weight: var(--fw-extrabold);
    margin-bottom: 10px;
}

.vnkr-persona-card--p1 .vnkr-persona-name { color: var(--brand); }
.vnkr-persona-card--p2 .vnkr-persona-name { color: var(--warning-text); }
.vnkr-persona-card--p3 .vnkr-persona-name { color: var(--brand); }

.vnkr-persona-detail {
    font-size: var(--text-xs);
    line-height: 1.7;
}

.vnkr-persona-card--p1 .vnkr-persona-detail { color: #1e3a5f; }
.vnkr-persona-card--p2 .vnkr-persona-detail { color: #5a3e00; }
.vnkr-persona-card--p3 .vnkr-persona-detail { color: #1e3a5f; }


/* ══════════════════════════════════════════════
   20. PYRAMID (Content Hierarchy)
   ══════════════════════════════════════════════ */

.vnkr-pyramid {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 640px;
}

.vnkr-pyramid-row {
    border-radius: var(--radius-lg);
    padding: 18px 24px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.vnkr-pyramid-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: var(--fw-extrabold);
    flex-shrink: 0;
    color: var(--white);
}

.vnkr-pyramid-title {
    font-size: var(--text-md);
    font-weight: var(--fw-bold);
    margin-bottom: 4px;
}

.vnkr-pyramid-desc {
    font-size: var(--text-xs);
    line-height: var(--lh-relaxed);
}


/* ══════════════════════════════════════════════
   21. FOOTER
   ══════════════════════════════════════════════ */

.vnkr-footer {
    background: var(--brand);
    text-align: center;
    padding: 32px 40px;
    border-top: 3px solid var(--accent);
    font-size: var(--text-xs);
    color: rgba(255,255,255,0.5);
}

.vnkr-footer strong {
    color: rgba(255,255,255,0.85);
}

.vnkr-footer-disclaimer {
    font-size: var(--text-xs);
    color: rgba(255,255,255,0.35);
    margin-top: 6px;
    line-height: var(--lh-snug);
}

.vnkr-footer-made {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.4);
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.1);
}


/* ══════════════════════════════════════════════
   23. HAMBURGER NAV TOGGLE
   ══════════════════════════════════════════════ */

.vnkr-nav-toggle {
    display: none;              /* Ẩn trên desktop */
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    gap: 5px;
    order: 3;                   /* Đặt sau logo */
}

.vnkr-nav-toggle span {
    display: block;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Trạng thái mở — 3 gạch → dấu X */
.vnkr-nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.vnkr-nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.vnkr-nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ══════════════════════════════════════════════
   24. CHUYÊN MỤC CARD (cm-*)
   ══════════════════════════════════════════════ */

.cm-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 14px;
}

.cm-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 22px 18px;
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.cm-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--brand-alt);
}

.cm-card--gold { border-color: var(--gold); background: #FFFDF0; }

.cm-emoji { font-size: 26px; }
.cm-name  { font-size: 14px; font-weight: var(--fw-bold); color: var(--brand); }
.cm-freq  { font-size: 11px; color: var(--text-muted); }


/* ══════════════════════════════════════════════
   25. LEGAL CARD
   ══════════════════════════════════════════════ */

.legal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.legal-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 22px 20px;
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.legal-card h3 {
    font-size: 14px;
    font-weight: var(--fw-bold);
    color: var(--brand);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.legal-card p {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
    line-height: 1.6;
}


/* ══════════════════════════════════════════════
   26. SUB-HEADING & KPI LABEL
   ══════════════════════════════════════════════ */

.sub-heading {
    font-size: 16px;
    font-weight: var(--fw-bold);
    color: var(--brand);
    margin-bottom: 16px;
    margin-top: 40px;
}

.kpi-label {
    margin-bottom: 10px;
    font-size: 13px;
    font-weight: var(--fw-bold);
    color: var(--brand);
}


/* ══════════════════════════════════════════════
   22. RESPONSIVE OVERRIDES
   ══════════════════════════════════════════════ */

@media (max-width: 768px) {
    .vnkr-nav { padding: 0 20px; }
    .vnkr-nav-links { display: none; }
    .vnkr-nav-toggle { display: flex; }

    .vnkr-hero { padding: 56px 20px 40px; }
    .vnkr-hero-stats { gap: 24px; }

    .vnkr-section { padding: var(--p-section-sm); }

    .vnkr-grid--2,
    .vnkr-grid--3 {
        grid-template-columns: 1fr;
    }

    .vnkr-type-row {
        flex-direction: column;
        gap: 8px;
    }

    .vnkr-type-meta { width: 100%; }

    .vnkr-progress-wrap { max-width: 100%; }
    .vnkr-checklist { max-width: 100%; }
    .vnkr-pyramid  { max-width: 100%; }

    /* Tables — horizontal scroll trên mobile */
    .vnkr-table-wrap {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin-bottom: 16px;
    }

    .vnkr-table {
        min-width: 480px;
    }

    /* cm-grid — 2 cột trên tablet, 1 cột mobile nhỏ */
    .cm-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }

    /* legal-grid — 1 cột */
    .legal-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .vnkr-stats-row { gap: 24px; justify-content: center; }
    .vnkr-hero-btns { flex-direction: column; align-items: center; }
    .vnkr-btn--full-mobile { width: 100%; justify-content: center; }

    .cm-grid {
        grid-template-columns: 1fr 1fr;
    }
}



/* ══════════════════════════════════════════════
   28. CALLOUT / ALERT BOX
   ══════════════════════════════════════════════ */

/*
 * Dùng trong bài viết để chú ý, cảnh báo, tip, v.v.
 *
 * <div class="vnkr-callout vnkr-callout--info">
 *   <strong>Lưu ý:</strong> Nội dung callout...
 * </div>
 */

.vnkr-callout {
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin: 20px 0;
    font-size: var(--text-md);
    border-left: 3px solid;
    line-height: var(--lh-relaxed);
    position: relative;
}

.vnkr-callout strong { font-weight: var(--fw-bold); }

/* Info — xanh brand */
.vnkr-callout--info {
    background: var(--info-light);
    border-color: var(--info);
    color: var(--info-text);
}

/* Success — xanh lá */
.vnkr-callout--success {
    background: var(--success-light);
    border-color: var(--success);
    color: var(--success-text);
}

/* Warning — vàng gold */
.vnkr-callout--warn {
    background: var(--warning-light);
    border-color: var(--warning);
    color: var(--warning-text);
}

/* Danger / Error — đỏ accent */
.vnkr-callout--danger {
    background: var(--error-light);
    border-color: var(--error);
    color: var(--error-text);
}

/* Gold — PTB / highlight đặc biệt */
.vnkr-callout--gold {
    background: var(--gold-light);
    border-color: var(--gold);
    color: var(--warning-text);
}

/* Icon tiêu đề callout (optional) */
.vnkr-callout-title {
    font-weight: var(--fw-bold);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: var(--text-lg);
}

.vnkr-callout p:last-child { margin-bottom: 0; }


/* ══════════════════════════════════════════════
   29. INPUT / FORM ELEMENTS
   ══════════════════════════════════════════════ */

/*
 * Cấu trúc:
 * <div class="vnkr-field" data-size="medium">       ← wrapper, data-size: small|medium|large
 *   <label class="vnkr-label">Tiêu đề</label>
 *   <div class="vnkr-input-wrap">
 *     <svg class="vnkr-input-icon vnkr-input-icon--left">...</svg>   ← optional
 *     <input class="vnkr-input" type="text" placeholder="...">
 *     <svg class="vnkr-input-icon vnkr-input-icon--right">...</svg>  ← optional
 *   </div>
 *   <span class="vnkr-input-helper">Gợi ý phụ</span>                ← optional
 *   <span class="vnkr-input-error">Thông báo lỗi</span>             ← optional
 * </div>
 */

/* Wrapper */
.vnkr-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 100%;
    /* Size defaults — medium */
    --input-h:    44px;
    --input-fs:   var(--text-md);
    --input-px:   14px;
}

/* Size variants qua data-size attribute */
.vnkr-field[data-size="large"]  { --input-h: 52px; --input-fs: var(--text-lg);   --input-px: 16px; }
.vnkr-field[data-size="medium"] { --input-h: 44px; --input-fs: var(--text-md);   --input-px: 14px; }
.vnkr-field[data-size="small"]  { --input-h: 36px; --input-fs: var(--text-base); --input-px: 12px; }

/* Label */
.vnkr-label {
    font-size: var(--text-sm);
    font-weight: var(--fw-semibold);
    color: var(--text-muted);
    letter-spacing: 0.2px;
}

/* Input wrapper — chứa icon + input */
.vnkr-input-wrap {
    display: flex;
    align-items: center;
    gap: 0;
    min-height: var(--input-h);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--white);
    padding: 0 var(--input-px);
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.vnkr-input-wrap:hover {
    border-color: var(--border-dark);
}

/* Focus-within — khi input bên trong được focus */
.vnkr-field:focus-within .vnkr-input-wrap {
    border-color: var(--brand-alt);
    box-shadow: var(--focus-ring);
}

/* Error state */
.vnkr-field[data-state="error"] .vnkr-input-wrap {
    border-color: var(--error);
}

.vnkr-field[data-state="error"]:focus-within .vnkr-input-wrap {
    box-shadow: var(--focus-ring-accent);
}

/* Disabled state */
.vnkr-field[data-state="disabled"] .vnkr-input-wrap {
    background: var(--bg);
    border-color: var(--border);
    cursor: not-allowed;
    opacity: 0.65;
}

.vnkr-field[data-state="disabled"] .vnkr-input-wrap:hover {
    border-color: var(--border);
}

/* Input element itself */
.vnkr-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-family: var(--font-main);
    font-size: var(--input-fs);
    color: var(--text);
    min-width: 0;
    padding: 10px 0;
    line-height: var(--lh-snug);
}

.vnkr-input::placeholder {
    color: var(--text-faint);
}

.vnkr-input:disabled,
.vnkr-field[data-state="disabled"] .vnkr-input {
    cursor: not-allowed;
    color: var(--text-muted);
}

/* Textarea variant */
textarea.vnkr-input {
    resize: vertical;
    padding: 10px 0;
    min-height: 100px;
}

.vnkr-field--textarea .vnkr-input-wrap {
    align-items: flex-start;
    height: auto;
    padding-top: 10px;
    padding-bottom: 10px;
}

/* Icons bên trong input */
.vnkr-input-icon {
    display: flex;
    align-items: center;
    color: var(--text-faint);
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    pointer-events: none;
}

.vnkr-input-icon--left  { margin-right: 8px; }
.vnkr-input-icon--right { margin-left: 8px; }

/* Nút clear / toggle bên trong input */
.vnkr-input-action {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    margin-left: 6px;
    transition: color var(--transition-fast);
    flex-shrink: 0;
}

.vnkr-input-action:hover { color: var(--text); }

/* Helper & Error messages */
.vnkr-input-helper {
    font-size: var(--text-sm);
    color: var(--text-muted);
    line-height: var(--lh-snug);
}

.vnkr-input-error {
    font-size: var(--text-sm);
    color: var(--error-text);
    font-weight: var(--fw-semibold);
    line-height: var(--lh-snug);
    display: none;
}

.vnkr-field[data-state="error"] .vnkr-input-error {
    display: block;
}

.vnkr-field[data-state="error"] .vnkr-input-helper {
    display: none;
}

/* ── Select element ── */
.vnkr-select {
    appearance: none;
    -webkit-appearance: none;
    width: 100%;
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-family: var(--font-main);
    font-size: var(--input-fs);
    color: var(--text);
    cursor: pointer;
    padding: 10px 0;
}

/* Search input — dùng trên header */
.vnkr-search {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-full);
    padding: 8px 16px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    width: 100%;
}

.vnkr-search:focus-within {
    border-color: var(--brand-alt);
    box-shadow: var(--focus-ring);
}

.vnkr-search input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-family: var(--font-main);
    font-size: var(--text-md);
    color: var(--text);
    min-width: 0;
}

.vnkr-search input::placeholder { color: var(--text-faint); }

.vnkr-search svg {
    color: var(--text-muted);
    flex-shrink: 0;
    width: 15px;
    height: 15px;
}

/* Responsive */
@media (max-width: 480px) {
    .vnkr-field[data-size="large"] {
        --input-h: 44px;
        --input-fs: var(--text-md);
    }
}


/* ══════════════════════════════════════════════
   30. SKELETON LOADING
   ══════════════════════════════════════════════ */

/*
 * Dùng để hiển thị placeholder trong khi nội dung đang tải.
 *
 * <div class="vnkr-skeleton vnkr-skeleton--text" style="width:60%"></div>
 * <div class="vnkr-skeleton vnkr-skeleton--circle" style="width:40px;height:40px"></div>
 * <div class="vnkr-skeleton vnkr-skeleton--rect" style="height:180px"></div>
 *
 * Card skeleton:
 * <div class="vnkr-skeleton-card">
 *   <div class="vnkr-skeleton-card-header">
 *     <div class="vnkr-skeleton vnkr-skeleton--circle" style="width:40px;height:40px;flex-shrink:0"></div>
 *     <div class="vnkr-skeleton-card-header-text">
 *       <div class="vnkr-skeleton vnkr-skeleton--text" style="width:50%"></div>
 *       <div class="vnkr-skeleton vnkr-skeleton--text" style="width:30%"></div>
 *     </div>
 *   </div>
 *   <div class="vnkr-skeleton-lines">
 *     <div class="vnkr-skeleton vnkr-skeleton--text"></div>
 *     <div class="vnkr-skeleton vnkr-skeleton--text" style="width:85%"></div>
 *     <div class="vnkr-skeleton vnkr-skeleton--text" style="width:70%"></div>
 *   </div>
 * </div>
 */

@keyframes vnkr-pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.40; }
}

.vnkr-skeleton {
    display: inline-block;
    background: var(--border);
    animation: vnkr-pulse 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

/* Text line */
.vnkr-skeleton--text {
    height: 0.9em;
    border-radius: var(--radius-sm);
    display: block;
    width: 100%;
    margin-bottom: 8px;
}

.vnkr-skeleton--text:last-child { margin-bottom: 0; }

/* Circle — avatar, icon */
.vnkr-skeleton--circle {
    border-radius: 50%;
    display: block;
    flex-shrink: 0;
}

/* Rectangle — image, thumbnail, hero */
.vnkr-skeleton--rect {
    border-radius: var(--radius-lg);
    display: block;
    width: 100%;
}

/* Card skeleton wrapper */
.vnkr-skeleton-card {
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.vnkr-skeleton-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.vnkr-skeleton-card-header-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.vnkr-skeleton-lines {
    display: flex;
    flex-direction: column;
    gap: 8px;
}


/* ══════════════════════════════════════════════
   31. MODAL / DIALOG
   ══════════════════════════════════════════════ */

/*
 * Cấu trúc HTML:
 *
 * <!-- Trigger -->
 * <button data-modal-open="my-modal" class="vnkr-btn vnkr-btn--primary">Mở Modal</button>
 *
 * <!-- Modal -->
 * <div class="vnkr-modal" id="my-modal" role="dialog" aria-modal="true" aria-labelledby="my-modal-title">
 *   <div class="vnkr-modal-dialog">
 *     <div class="vnkr-modal-header">
 *       <h3 class="vnkr-modal-title" id="my-modal-title">Tiêu đề</h3>
 *       <button class="vnkr-modal-close" data-modal-close aria-label="Đóng">
 *         <svg>...</svg>
 *       </button>
 *     </div>
 *     <div class="vnkr-modal-body">Nội dung modal...</div>
 *     <div class="vnkr-modal-footer">
 *       <button data-modal-close class="vnkr-btn vnkr-btn--ghost vnkr-btn--sm">Hủy</button>
 *       <button class="vnkr-btn vnkr-btn--primary vnkr-btn--sm">Xác nhận</button>
 *     </div>
 *   </div>
 * </div>
 *
 * Bottom Sheet (mobile):
 * <div class="vnkr-modal vnkr-modal--sheet" id="my-sheet" role="dialog" aria-modal="true">
 *   <div class="vnkr-modal-dialog">
 *     <div class="vnkr-sheet-handle"></div>
 *     <div class="vnkr-modal-body">...</div>
 *   </div>
 * </div>
 */

/* Backdrop */
.vnkr-modal {
    position: fixed;
    inset: 0;
    z-index: 400;
    background: rgba(10, 30, 50, 0.50);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    /* Hidden state */
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

/* Visible state — toggled by JS via .vnkr-modal--open */
.vnkr-modal--open {
    opacity: 1;
    pointer-events: all;
}

/* Dialog box */
.vnkr-modal-dialog {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 480px;
    max-height: 88vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    transform: translateY(10px) scale(0.98);
    transition: transform var(--transition-base);
}

.vnkr-modal--open .vnkr-modal-dialog {
    transform: translateY(0) scale(1);
}

/* Header */
.vnkr-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 0;
    flex-shrink: 0;
}

.vnkr-modal-title {
    font-size: var(--text-2xl);
    font-weight: var(--fw-bold);
    color: var(--brand);
    margin: 0;
    line-height: var(--lh-snug);
}

/* Close button */
.vnkr-modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--text-muted);
    transition: color var(--transition-fast), background var(--transition-fast);
    flex-shrink: 0;
}

.vnkr-modal-close:hover {
    color: var(--text);
    background: var(--bg);
}

.vnkr-modal-close:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* Body */
.vnkr-modal-body {
    padding: 20px 24px;
    flex: 1;
    font-size: var(--text-md);
    color: var(--text);
    line-height: var(--lh-relaxed);
}

/* Footer */
.vnkr-modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    padding: 0 24px 20px;
    flex-shrink: 0;
}

/* ── Bottom Sheet variant ── */
.vnkr-modal--sheet {
    align-items: flex-end;
    padding: 0;
}

.vnkr-modal--sheet .vnkr-modal-dialog {
    max-width: 100%;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    max-height: 85vh;
    transform: translateY(30px);
}

.vnkr-modal--sheet.vnkr-modal--open .vnkr-modal-dialog {
    transform: translateY(0);
}

/* Sheet drag handle */
.vnkr-sheet-handle {
    width: 36px;
    height: 4px;
    border-radius: var(--radius-full);
    background: var(--border-dark);
    margin: 12px auto 0;
    flex-shrink: 0;
}


/* ══════════════════════════════════════════════
   32. TIMELINE
   ══════════════════════════════════════════════ */

/*
 * Dùng cho roadmap, lịch sử, lộ trình thời gian.
 *
 * <div class="vnkr-timeline">
 *   <div class="vnkr-tl-item">
 *     <div class="vnkr-tl-dot vnkr-tl-dot--brand"></div>
 *     <div class="vnkr-tl-content">
 *       <div class="vnkr-tl-period">Tháng 1 · 2025</div>
 *       <div class="vnkr-tl-title">Đặt nền móng</div>
 *       <div class="vnkr-tl-body">Mô tả chi tiết về giai đoạn này...</div>
 *       <div class="vnkr-tl-tags">
 *         <span class="vnkr-tag">Laravel</span>
 *         <span class="vnkr-tag">MySQL</span>
 *       </div>
 *     </div>
 *   </div>
 * </div>
 */

.vnkr-timeline {
    position: relative;
    padding-left: 32px;
}

/* Đường kẻ dọc */
.vnkr-timeline::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent) 0%, var(--brand-alt) 40%, var(--border) 100%);
    border-radius: var(--radius-full);
}

/* Mỗi mốc thời gian */
.vnkr-tl-item {
    position: relative;
    padding-bottom: 32px;
    display: flex;
    gap: 20px;
}

.vnkr-tl-item:last-child {
    padding-bottom: 0;
}

/* Dot — chấm tròn trên đường kẻ */
.vnkr-tl-dot {
    position: absolute;
    left: -27px;
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2.5px solid var(--white);
    box-shadow: 0 0 0 2px var(--border);
    flex-shrink: 0;
    z-index: 1;
    background: var(--border);
}

/* Dot color variants */
.vnkr-tl-dot--accent  { background: var(--accent);    box-shadow: 0 0 0 2px var(--accent); }
.vnkr-tl-dot--brand   { background: var(--brand-alt);  box-shadow: 0 0 0 2px var(--brand-alt); }
.vnkr-tl-dot--gold    { background: var(--gold);       box-shadow: 0 0 0 2px var(--gold); }
.vnkr-tl-dot--success { background: var(--success);    box-shadow: 0 0 0 2px var(--success); }

/* Content bên phải dot */
.vnkr-tl-content {
    flex: 1;
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 18px 20px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.vnkr-tl-content:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-dark);
}

/* Period label */
.vnkr-tl-period {
    font-size: var(--text-xs);
    font-weight: var(--fw-bold);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 5px;
}

/* Title */
.vnkr-tl-title {
    font-size: var(--text-xl);
    font-weight: var(--fw-bold);
    color: var(--brand);
    margin-bottom: 8px;
    line-height: var(--lh-snug);
}

/* Body text */
.vnkr-tl-body {
    font-size: var(--text-md);
    color: var(--text-muted);
    line-height: var(--lh-relaxed);
    margin-bottom: 12px;
}

.vnkr-tl-body:last-child { margin-bottom: 0; }

/* Tags row */
.vnkr-tl-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

/* Status badge trong timeline */
.vnkr-tl-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: var(--text-xs);
    font-weight: var(--fw-bold);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    margin-bottom: 8px;
}

.vnkr-tl-status--done    { background: var(--success-light); color: var(--success-text); }
.vnkr-tl-status--active  { background: var(--info-light);    color: var(--info-text); }
.vnkr-tl-status--soon    { background: var(--warning-light); color: var(--warning-text); }
.vnkr-tl-status--planned { background: var(--bg);            color: var(--text-muted); border: 1px solid var(--border); }

/* Responsive */
@media (max-width: 600px) {
    .vnkr-timeline { padding-left: 24px; }
    .vnkr-tl-dot   { left: -21px; width: 12px; height: 12px; }
    .vnkr-tl-content { padding: 14px 16px; }
}



/* ══════════════════════════════════════════════
   33. DARK MODE ADJUSTMENTS
       Các overrides cần thiết khi [data-theme="dark"]
       (phần còn lại xử lý qua token vars)
   ══════════════════════════════════════════════ */

/* Body transition mượt khi toggle theme */
body {
    transition:
        background-color var(--transition-slow),
        color var(--transition-slow);
}

/* Hero — nền gradient tối hơn trong dark mode */
[data-theme="dark"] .vnkr-hero {
    background: linear-gradient(160deg, #071828 0%, #0a2540 60%, #102e52 100%);
}

/* Code block — tối hơn trong dark */
[data-theme="dark"] .vnkr-code-block {
    background: #0d1117;
    border-color: #2d3d52;
}

/* Card — border sáng hơn chút trong dark */
[data-theme="dark"] .vnkr-card,
[data-theme="dark"] .vnkr-identity-card,
[data-theme="dark"] .vnkr-skeleton-card,
[data-theme="dark"] .vnkr-tl-content,
[data-theme="dark"] .legal-card,
[data-theme="dark"] .cm-card {
    box-shadow: 0 2px 12px rgba(0,0,0,0.35);
}

/* Input wrap — adapt border */
[data-theme="dark"] .vnkr-input-wrap {
    background: #1a2230;
}

[data-theme="dark"] .vnkr-search {
    background: #1a2230;
}

/* Modal — nền tối */
[data-theme="dark"] .vnkr-modal-dialog {
    background: var(--bg-card);
}

/* Table — header row tối */
[data-theme="dark"] .vnkr-table thead th {
    background: #1a2330;
    color: var(--text-muted);
}

[data-theme="dark"] .vnkr-table tr:nth-child(even) td {
    background: #1a2330;
}

/* Progress bar background */
[data-theme="dark"] .vnkr-progress-bg {
    background: #2d3d52;
}

/* Checklist icon done */
[data-theme="dark"] .vnkr-check-icon--done {
    background: #0a2e22;
    color: #4ade9a;
}

/* Theme toggle button — in nav */
.vnkr-theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-full);
    cursor: pointer;
    color: rgba(255,255,255,0.8);
    font-size: 16px;
    transition: background var(--transition-fast), color var(--transition-fast);
    flex-shrink: 0;
    line-height: 1;
}

.vnkr-theme-toggle:hover {
    background: rgba(255,255,255,0.18);
    color: var(--gold);
}

.vnkr-theme-toggle:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
}


/* ══════════════════════════════════════════════
   34. DROPDOWN
   ══════════════════════════════════════════════ */

/*
 * Cấu trúc:
 * <div class="vnkr-dropdown" data-dropdown>
 *   <button class="vnkr-dropdown-trigger" data-dropdown-trigger aria-haspopup="true" aria-expanded="false">
 *     Tùy chọn <svg class="vnkr-dropdown-arrow">...</svg>
 *   </button>
 *   <ul class="vnkr-dropdown-menu" role="menu">
 *     <li role="menuitem"><a class="vnkr-dropdown-item" href="#">Mục 1</a></li>
 *     <li role="separator" class="vnkr-dropdown-divider"></li>
 *     <li role="menuitem"><button class="vnkr-dropdown-item vnkr-dropdown-item--danger">Xóa</button></li>
 *   </ul>
 * </div>
 *
 * Align phải: thêm class .vnkr-dropdown--right vào wrapper
 * Align lên:  thêm class .vnkr-dropdown--up vào wrapper
 */

.vnkr-dropdown {
    position: relative;
    display: inline-block;
}

/* Trigger button */
.vnkr-dropdown-trigger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-main);
    font-size: var(--text-md);
    font-weight: var(--fw-medium);
    color: var(--text);
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 9px 14px;
    cursor: pointer;
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        background var(--transition-fast);
    white-space: nowrap;
}

.vnkr-dropdown-trigger:hover {
    border-color: var(--border-dark);
    background: var(--bg);
}

.vnkr-dropdown-trigger:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
    border-color: var(--brand-alt);
}

/* Dropdown open state on trigger */
.vnkr-dropdown[data-open] .vnkr-dropdown-trigger {
    border-color: var(--brand-alt);
    box-shadow: var(--focus-ring);
}

/* Arrow icon */
.vnkr-dropdown-arrow {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
    color: var(--text-muted);
}

.vnkr-dropdown[data-open] .vnkr-dropdown-arrow {
    transform: rotate(180deg);
}

/* Menu panel */
.vnkr-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    z-index: 200;
    min-width: 180px;
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    list-style: none;
    /* Hidden by default */
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px) scale(0.97);
    transform-origin: top left;
    transition:
        opacity var(--transition-fast),
        transform var(--transition-fast);
}

/* Right-aligned */
.vnkr-dropdown--right .vnkr-dropdown-menu {
    left: auto;
    right: 0;
    transform-origin: top right;
}

/* Upward */
.vnkr-dropdown--up .vnkr-dropdown-menu {
    top: auto;
    bottom: calc(100% + 6px);
    transform-origin: bottom left;
    transform: translateY(6px) scale(0.97);
}

.vnkr-dropdown--up.vnkr-dropdown--right .vnkr-dropdown-menu {
    transform-origin: bottom right;
}

/* Open state */
.vnkr-dropdown[data-open] .vnkr-dropdown-menu {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0) scale(1);
}

/* Item */
.vnkr-dropdown-item {
    display: flex;
    align-items: center;
    gap: 9px;
    width: 100%;
    padding: 9px 12px;
    font-family: var(--font-main);
    font-size: var(--text-md);
    font-weight: var(--fw-medium);
    color: var(--text);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast);
    text-align: left;
    line-height: var(--lh-snug);
    white-space: nowrap;
}

.vnkr-dropdown-item:hover {
    background: var(--bg);
    color: var(--brand);
    text-decoration: none;
}

.vnkr-dropdown-item:focus-visible {
    outline: none;
    background: var(--brand-light);
    color: var(--brand);
}

/* Icon inside item */
.vnkr-dropdown-item svg,
.vnkr-dropdown-item .vnkr-di-icon {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    color: var(--text-muted);
}

.vnkr-dropdown-item:hover svg,
.vnkr-dropdown-item:hover .vnkr-di-icon {
    color: var(--brand-alt);
}

/* Danger item */
.vnkr-dropdown-item--danger {
    color: var(--error-text);
}

.vnkr-dropdown-item--danger:hover {
    background: var(--error-light);
    color: var(--error-text);
}

.vnkr-dropdown-item--danger svg,
.vnkr-dropdown-item--danger .vnkr-di-icon {
    color: var(--error-text);
}

/* Muted/disabled item */
.vnkr-dropdown-item--muted {
    color: var(--text-muted);
    pointer-events: none;
    opacity: 0.6;
}

/* Divider */
.vnkr-dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 5px 0;
}

/* Header label trong menu */
.vnkr-dropdown-header {
    padding: 6px 12px 4px;
    font-size: var(--text-xs);
    font-weight: var(--fw-bold);
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-muted);
}



/* ══════════════════════════════════════════════
   SPRINT 2 — BUTTON PILL SYSTEM
   (Design System Plan §5.2 — 3 variants × sizes)
   ══════════════════════════════════════════════ */

/* Base pill button — áp dụng song song với .vnkr-btn */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-radius: var(--radius-pill);
    font-family: var(--font-main);
    font-weight: var(--fw-semibold);
    font-size: var(--text-btn-medium);
    line-height: 1;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    border: 2px solid transparent;
    padding: 9px 20px;
}

.btn:hover { text-decoration: none; }
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }

/* Sizes */
.btn-giant  { padding: 16px 32px; font-size: var(--text-btn-giant); }
.btn-large  { padding: 12px 24px; font-size: var(--text-btn-large); }
.btn-medium { padding: 9px 20px;  font-size: var(--text-btn-medium); }
.btn-small  { padding: 6px 14px;  font-size: var(--text-btn-small); }
.btn-full   { width: 100%; justify-content: center; }

/* === FILLED === */
.btn-primary   { background: var(--brand);           color: #fff; border-color: var(--brand); }
.btn-primary:hover { background: var(--brand-dark);  border-color: var(--brand-dark); color: #fff; transform: translateY(-1px); }

.btn-accent    { background: var(--accent);           color: #fff; border-color: var(--accent); box-shadow: var(--shadow-accent); }
.btn-accent:hover { background: var(--accent-alt);   border-color: var(--accent-alt); color: #fff; transform: translateY(-1px); }

.btn-dark      { background: #000; color: #fff; border-color: #000; }
.btn-dark:hover { background: #222; border-color: #222; color: #fff; }

.btn-success   { background: var(--success-500); color: #fff; border-color: var(--success-500); }
.btn-success:hover { background: var(--success-700); border-color: var(--success-700); color: #fff; }

.btn-warning   { background: var(--warning-500); color: #1a1a2e; border-color: var(--warning-500); }
.btn-warning:hover { background: var(--warning-700); border-color: var(--warning-700); color: #fff; }

.btn-error     { background: var(--error-500);   color: #fff; border-color: var(--error-500); }
.btn-error:hover { background: var(--error-700); border-color: var(--error-700); color: #fff; }

/* === OUTLINED === */
.btn-outline-primary { background: transparent; color: var(--brand); border-color: var(--brand); }
.btn-outline-primary:hover { background: var(--brand-light); }

.btn-outline-dark    { background: transparent; color: #000; border-color: #000; }
.btn-outline-dark:hover { background: #f4f4f4; }

.btn-outline-accent  { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-outline-accent:hover { background: var(--accent-light); }

/* === GHOST === */
.btn-ghost-primary { background: transparent; color: var(--brand); border-color: transparent; }
.btn-ghost-primary:hover { background: var(--brand-light); }

.btn-ghost-dark    { background: transparent; color: #000; border-color: transparent; }
.btn-ghost-dark:hover { background: #f4f4f4; }

/* === DISABLED === */
.btn:disabled, .btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}


/* ══════════════════════════════════════════════
   SPRINT 2 — FORM INPUT SYSTEM
   (Design System Plan §5.3 — inputs, labels, toggles)
   ══════════════════════════════════════════════ */

.form-input {
    width: 100%;
    padding: 10px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    font-family: var(--font-main);
    font-size: var(--text-b1);
    color: var(--text);
    background: var(--bg-section);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-input:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px var(--brand-light);
    background: var(--bg-card);
}

.form-input::placeholder { color: var(--text-faint); }

.form-input.is-error {
    border-color: var(--error-500);
    box-shadow: 0 0 0 3px var(--error-100);
}

.form-label {
    display: block;
    font-size: var(--text-b2);
    font-weight: var(--fw-medium);
    color: var(--text-muted);
    margin-bottom: 6px;
}

.form-caption {
    font-size: var(--text-caption);
    color: var(--text-muted);
    margin-top: 4px;
}

.form-caption.error { color: var(--error-text); }

/* Toggle switch — Design System Plan §5.4 */
.vnkr-toggle {
    display: inline-block;
    width: 44px;
    height: 24px;
    border-radius: var(--radius-full);
    background: var(--border);
    position: relative;
    cursor: pointer;
    transition: background var(--transition-base);
    flex-shrink: 0;
}

.vnkr-toggle.active,
.vnkr-toggle[data-active="true"] {
    background: var(--success-500);
}

.vnkr-toggle::after {
    content: '';
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: 3px;
    left: 3px;
    transition: left var(--transition-base);
    box-shadow: 0 1px 3px rgba(0,0,0,.2);
}

.vnkr-toggle.active::after,
.vnkr-toggle[data-active="true"]::after {
    left: 23px;
}


/* ══════════════════════════════════════════════
   SPRINT 4 — ARTICLE CARD COMPONENT
   (Design System Plan §6.2)
   ══════════════════════════════════════════════ */

.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    box-shadow: 0 4px 20px rgba(10,61,98,0.10);
    transform: translateY(-2px);
}

.article-card__img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    display: block;
}

.article-card__body {
    padding: var(--sp-4);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.article-card__category {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--fw-semibold);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--brand-light);
    color: var(--brand);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: var(--sp-2);
}

.article-card__title {
    font-family: var(--font-display);
    font-size: var(--text-h5);
    font-weight: var(--fw-semibold);
    color: var(--text);
    line-height: var(--lh-snug);
    margin: 0 0 var(--sp-2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card__title a {
    color: inherit;
    text-decoration: none;
}

.article-card__title a:hover { color: var(--brand); }

.article-card__excerpt {
    font-size: var(--text-b2);
    color: var(--text-muted);
    line-height: var(--lh-normal);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--sp-3);
}

.article-card__meta {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    font-size: var(--text-caption);
    color: var(--text-faint);
    margin-top: auto;
}

.article-card__meta .sep { opacity: .4; }


/* ══════════════════════════════════════════════
   SPRINT 4 — STATUS BADGE SYSTEM
   (Design System Plan §6.1 — semantic status badges)
   ══════════════════════════════════════════════ */

.badge-status {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: var(--text-caption);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    gap: 4px;
}

.badge-published { background: var(--success-100); color: var(--success-900); }
.badge-draft     { background: var(--warning-100); color: var(--warning-900); }
.badge-review    { background: var(--info-100);    color: var(--info-700); }
.badge-archived  { background: #f0f0f0;            color: var(--status-archived); }
.badge-breaking  { background: var(--status-breaking); color: #fff; }

/* LIVE badge với pulse animation */
.badge-live {
    background: var(--error-100);
    color: var(--error-700);
    animation: badge-pulse 1.5s ease-in-out infinite;
}

@keyframes badge-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.55; }
}

/* Category tag */
.badge-category {
    background: var(--brand-light);
    color: var(--brand);
}

/* Reading time */
.badge-readtime {
    background: var(--bg-section);
    color: var(--text-muted);
    font-weight: var(--fw-normal);
}


/* ══════════════════════════════════════════════
   SPRINT 4 — LIST ITEM COMPONENT
   (Design System Plan §6.4 — profile/settings lists)
   ══════════════════════════════════════════════ */

.vnkr-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    gap: var(--sp-3);
}

.vnkr-list-item:last-child { border-bottom: none; }

.vnkr-list-item__icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--bg-section);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--brand);
}

.vnkr-list-item__content { flex: 1; min-width: 0; }

.vnkr-list-item__title {
    font-size: var(--text-b1);
    font-weight: var(--fw-medium);
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.vnkr-list-item__desc {
    font-size: var(--text-caption);
    color: var(--text-muted);
    margin-top: 2px;
}

.vnkr-list-item__chevron {
    color: var(--text-faint);
    flex-shrink: 0;
}


/* ══════════════════════════════════════════════
   SPRINT 4 — ACCORDION / FAQ
   (Design System Plan §6.5)
   ══════════════════════════════════════════════ */

.vnkr-accordion-item {
    border-bottom: 1px solid var(--border);
}

.vnkr-accordion-item:last-child { border-bottom: none; }

.vnkr-accordion-trigger {
    width: 100%;
    padding: 14px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-main);
    font-size: var(--text-b1);
    font-weight: var(--fw-medium);
    color: var(--text);
    cursor: pointer;
    background: none;
    border: none;
    text-align: left;
    gap: var(--sp-3);
}

.vnkr-accordion-trigger:hover { color: var(--brand); }

.vnkr-accordion-trigger .vnkr-acc-icon {
    flex-shrink: 0;
    transition: transform var(--transition-base);
    color: var(--text-muted);
}

.vnkr-accordion-item.open .vnkr-acc-icon {
    transform: rotate(45deg);
}

.vnkr-accordion-body {
    font-size: var(--text-b2);
    color: var(--text-muted);
    padding: 0 0 14px;
    line-height: var(--lh-relaxed);
    display: none;
}

.vnkr-accordion-item.open .vnkr-accordion-body {
    display: block;
}


/* ══════════════════════════════════════════════
   SPRINT 4 — TYPOGRAPHY HELPERS
   (Design System Plan §4 — headings dùng Work Sans)
   ══════════════════════════════════════════════ */

/* Article content headings — Work Sans */
.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
    font-family: var(--font-display);
    font-weight: var(--fw-semibold);
    line-height: var(--lh-snug);
    color: var(--text);
    margin: var(--sp-6) 0 var(--sp-3);
}

.article-content h1 { font-size: var(--text-h1); }
.article-content h2 { font-size: var(--text-h2); }
.article-content h3 { font-size: var(--text-h3); }
.article-content h4 { font-size: var(--text-h4); }
.article-content h5 { font-size: var(--text-h5); }
.article-content h6 { font-size: var(--text-h6); }

.article-content p {
    font-size: var(--text-b1);
    line-height: var(--lh-relaxed);
    color: var(--text);
    margin-bottom: var(--sp-4);
}

/* Section headings dùng Work Sans */
.section-heading {
    font-family: var(--font-display);
    font-size: var(--text-h2);
    font-weight: var(--fw-semibold);
    color: var(--text);
    line-height: var(--lh-tight);
}

.section-sub {
    font-size: var(--text-b1);
    color: var(--text-muted);
    line-height: var(--lh-relaxed);
}

/* Category overline */
.text-overline {
    font-size: var(--text-overline);
    font-weight: var(--fw-medium);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}


/* ══════════════════════════════════════════════
   SPRINT 4 — LAYOUT GRID HELPERS
   (Design System Plan §7.5)
   ══════════════════════════════════════════════ */

.grid-articles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
}

@media (max-width: 768px) {
    .grid-articles { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 576px) {
    .grid-articles { grid-template-columns: 1fr; }
}

.layout-news {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--sp-6);
    align-items: start;
}

@media (max-width: 992px) {
    .layout-news { grid-template-columns: 1fr; }
}