/* =========================================================
   legal.css — Style dùng chung cho 3 trang pháp lý TĨNH
   (privacy.html / terms.html / refund.html)
   Đồng bộ phong cách app "Ươm Mầm Toán": font Nunito, bảng màu
   xanh dương – xanh lá – cam, nền gradient nhạt.
   Mobile-first: chữ ≥16px, dòng thoáng, bảng cuộn ngang được.
   KHÔNG phụ thuộc app — trang xem được khi CHƯA đăng nhập.
   ========================================================= */

:root {
    --lg-ink: var(--ink-900);
    --lg-ink-soft: var(--text-body-soft);
    --lg-blue: var(--blue-600);
    --lg-blue-dark: var(--blue-700);
    --lg-green: var(--green-450);
    --lg-green-soft: var(--green-soft);
    --lg-green-line: var(--green-line);
    --lg-orange: var(--orange-brand);
    --lg-orange-soft: var(--orange-soft);
    --lg-orange-line: var(--orange-line);
    --lg-panel: var(--surface-white);
    --lg-border: var(--blue-100);
    --lg-radius: 14px;
    --lg-shadow: 0 8px 26px rgba(var(--shadow-rgb), 0.10);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    padding: 0 14px 40px;
    font-family: 'Nunito', 'Segoe UI', system-ui, Arial, sans-serif;
    font-size: 17px;
    line-height: 1.72;
    color: var(--lg-ink);
    background:
        radial-gradient(circle at 12% 14%, rgba(255, 214, 102, 0.30) 0 70px, transparent 72px),
        radial-gradient(circle at 88% 10%, rgba(111, 168, 220, 0.24) 0 90px, transparent 92px),
        radial-gradient(circle at 84% 88%, rgba(147, 196, 125, 0.22) 0 85px, transparent 87px),
        linear-gradient(135deg, #eef7ff 0%, var(--surface-warning) 48%, var(--green-soft) 100%);
    background-attachment: fixed;
}

/* ---- Thanh "Quay lại ứng dụng" trên cùng ---- */
.legal-topbar {
    max-width: 820px;
    margin: 0 auto;
    padding: 14px 0 4px;
}

.legal-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    font-weight: 700;
    font-size: 15px;
    color: var(--lg-blue-dark);
    background: var(--surface-white);
    border: 1px solid var(--lg-border);
    border-radius: var(--radius-pill);
    padding: 8px 16px;
    box-shadow: var(--shadow-xs);
    transition: all .15s ease;
    min-height: 40px;
}
.legal-back:hover { background: var(--lg-blue); color: var(--text-inverse); border-color: var(--lg-blue); }
.legal-back:active { transform: translateY(1px); }

/* ---- Khung nội dung ---- */
.legal-wrap {
    max-width: 820px;
    margin: 12px auto 0;
    background: var(--lg-panel);
    border: 1px solid var(--lg-border);
    border-radius: var(--lg-radius);
    box-shadow: var(--lg-shadow);
    padding: 26px 26px 30px;
}

/* ---- Header: logo + tên trang + ngày cập nhật ---- */
.legal-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-bottom: 18px;
    border-bottom: 2px solid var(--lg-green-line);
    margin-bottom: 8px;
}
.legal-logo {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    flex: 0 0 auto;
    box-shadow: 0 3px 10px rgba(var(--shadow-rgb), 0.15);
}
.legal-header-text { min-width: 0; }
.legal-brand {
    font-size: 15px;
    font-weight: 800;
    color: var(--lg-green);
    letter-spacing: .2px;
    margin: 0 0 2px;
}
.legal-title {
    font-size: 27px;
    font-weight: 800;
    color: var(--lg-ink);
    margin: 0 0 6px;
    line-height: 1.25;
}
.legal-updated {
    display: inline-block;
    font-size: 13.5px;
    font-weight: 700;
    color: var(--lg-blue-dark);
    background: var(--surface-subtle);
    border: 1px solid var(--lg-border);
    border-radius: var(--radius-pill);
    padding: 3px 11px;
}

/* ---- Mục lục nhảy ---- */
.legal-toc {
    background: var(--lg-green-soft);
    border: 1px solid var(--lg-green-line);
    border-radius: var(--radius-lg);
    padding: 16px 18px;
    margin: 22px 0 8px;
}
.legal-toc-title {
    font-size: 15px;
    font-weight: 800;
    color: var(--lg-green);
    margin: 0 0 8px;
    text-transform: uppercase;
    letter-spacing: .4px;
}
.legal-toc ol {
    margin: 0;
    padding-left: 22px;
    columns: 2;
    column-gap: 26px;
}
.legal-toc li { margin: 3px 0; break-inside: avoid; }
.legal-toc a {
    color: var(--lg-blue-dark);
    text-decoration: none;
    font-weight: 600;
}
.legal-toc a:hover { text-decoration: underline; }

@media (max-width: 620px) {
    .legal-toc ol { columns: 1; }
}

/* ---- Nội dung ---- */
.legal-content { margin-top: 10px; }

.legal-content h2 {
    font-size: 21px;
    font-weight: 800;
    color: var(--lg-blue-dark);
    margin: 30px 0 10px;
    padding-top: 8px;
    scroll-margin-top: 16px;
}
.legal-content h2:first-of-type { margin-top: 14px; }

.legal-content h3 {
    font-size: 18px;
    font-weight: 800;
    color: var(--lg-green);
    margin: 20px 0 6px;
}

.legal-content p { margin: 10px 0; }

.legal-content ul,
.legal-content ol { margin: 10px 0; padding-left: 26px; }
.legal-content li { margin: 6px 0; }

.legal-content strong { font-weight: 800; color: #16324a; }

.legal-content code {
    font-family: 'SFMono-Regular', 'Consolas', 'Menlo', monospace;
    font-size: 0.92em;
    background: var(--surface-subtle);
    border: 1px solid var(--lg-border);
    border-radius: var(--radius-xs);
    padding: 1px 6px;
    color: var(--lg-blue-dark);
}

.legal-content a {
    color: var(--lg-blue);
    font-weight: 700;
    text-decoration: none;
    border-bottom: 1.5px solid rgba(var(--accent-secondary-rgb), 0.35);
}
.legal-content a:hover { border-bottom-color: var(--lg-blue); }

/* Đường kẻ ngăn cách (--- trong markdown) */
.legal-content hr {
    border: none;
    border-top: 1px dashed var(--lg-green-line);
    margin: 26px 0;
}

/* Ghi chú (> blockquote) */
.legal-content blockquote {
    margin: 14px 0;
    padding: 12px 16px;
    background: var(--lg-orange-soft);
    border-left: 4px solid var(--lg-orange);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--lg-ink-soft);
    font-size: 15.5px;
}
.legal-content blockquote p { margin: 4px 0; }

/* ---- Bảng: cuộn ngang được trên điện thoại ---- */
.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 14px 0;
    border: 1px solid var(--lg-border);
    border-radius: var(--radius-md);
}
.legal-content table {
    border-collapse: collapse;
    width: 100%;
    min-width: 420px;
    font-size: 15.5px;
}
.legal-content th,
.legal-content td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--lg-border);
    vertical-align: top;
}
.legal-content thead th {
    background: var(--surface-subtle);
    color: var(--lg-blue-dark);
    font-weight: 800;
    white-space: nowrap;
}
.legal-content tbody tr:last-child td { border-bottom: none; }
.legal-content tbody tr:nth-child(even) td { background: var(--surface-tint-blue); }

/* ---- Nút quay lại ở CUỐI + chân trang ---- */
.legal-bottom-back {
    text-align: center;
    margin: 30px 0 6px;
}

.legal-footer {
    max-width: 820px;
    margin: 22px auto 0;
    padding: 20px;
    background: var(--lg-panel);
    border: 1px solid var(--lg-border);
    border-radius: var(--lg-radius);
    box-shadow: var(--lg-shadow);
    text-align: center;
    font-size: 15px;
    color: var(--lg-ink-soft);
}
.legal-footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 14px;
    margin-bottom: 12px;
}
.legal-footer-links a {
    color: var(--lg-blue-dark);
    font-weight: 700;
    text-decoration: none;
}
.legal-footer-links a:hover { text-decoration: underline; }
.legal-footer-sep { color: var(--lg-green-line); }
.legal-footer-contact { margin: 4px 0; }
.legal-footer-contact a {
    color: var(--lg-blue);
    font-weight: 700;
    text-decoration: none;
}
.legal-footer-brand {
    margin-top: 10px;
    font-size: 13px;
    color: var(--text-muted);
}

/* ---- Điện thoại ---- */
@media (max-width: 560px) {
    .legal-wrap { padding: 20px 16px 24px; }
    .legal-header { gap: 12px; }
    .legal-logo { width: 50px; height: 50px; border-radius: 13px; }
    .legal-title { font-size: 22px; }
    .legal-content h2 { font-size: 19px; }
    .legal-content h3 { font-size: 16.5px; }
    body { font-size: 16px; }
}