/* ==========================================================================
   License Hub — giao diện dùng chung cho portal khách, trang thanh toán và trang quản trị.
   Tab ngang trên cùng, nội dung chính chiếm diện tích lớn nhất, lịch sử ở panel phải trượt (HUB-SPEC 10).
   Tông sáng/tối theo hệ điều hành, đổi tay được (data-theme trên <html>).
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
    color-scheme: light;

    --font-sans: "Be Vietnam Pro", "Segoe UI", system-ui, -apple-system, sans-serif;
    --font-mono: ui-monospace, "Cascadia Mono", "Consolas", "Menlo", monospace;

    --bg: #f3f5fa;
    --surface: #ffffff;
    --surface-2: #f7f8fc;
    --surface-3: #eef1f7;
    --border: #e2e6ef;
    --border-strong: #cdd3e0;
    --text: #192033;
    --text-2: #475169;
    --muted: #6b7489;

    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-soft: #eef0ff;
    --primary-soft-text: #3730a3;
    --on-primary: #ffffff;
    --focus-ring: rgba(79, 70, 229, 0.35);

    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --danger-soft: #fdecec;
    --danger-text: #b42318;
    --success: #16a34a;
    --success-soft: #e6f6ec;
    --success-text: #146c35;
    --warning-soft: #fdf4d3;
    --warning-text: #8a5a00;
    --orange-soft: #fdeadc;
    --orange-text: #b4410b;
    --neutral-soft: #eceef3;
    --neutral-text: #4f586b;
    --info-soft: #e8f1fd;
    --info-text: #1d5aa6;

    --header-bg: #ffffff;
    --hero-from: #eef0ff;
    --hero-to: #f7f8fc;

    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-pill: 999px;

    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-7: 32px;
    --space-8: 40px;
    --space-9: 56px;

    --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
    --shadow: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.04);
    --shadow-md: 0 6px 16px rgba(16, 24, 40, 0.08);
    --shadow-lg: 0 16px 40px rgba(16, 24, 40, 0.18);

    --header-height: 60px;
    --content-max: 1240px;
    --panel-width: 420px;
    --tap: 44px;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) { color-scheme: dark; }
}

:root[data-theme="dark"] { color-scheme: dark; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #0e1220; --surface: #161b2b; --surface-2: #1b2133; --surface-3: #232a3f;
        --border: #293047; --border-strong: #3a4360; --text: #e7eaf3; --text-2: #b7bfd1; --muted: #8b94ab;
        --primary: #818cf8; --primary-hover: #a5b4fc; --primary-soft: rgba(129, 140, 248, 0.15); --primary-soft-text: #c7d0ff;
        --on-primary: #0e1220; --focus-ring: rgba(129, 140, 248, 0.45);
        --danger: #f87171; --danger-hover: #fca5a5; --danger-soft: rgba(248, 113, 113, 0.14); --danger-text: #fca5a5;
        --success: #34d399; --success-soft: rgba(52, 211, 153, 0.14); --success-text: #6ee7b7;
        --warning-soft: rgba(250, 204, 21, 0.14); --warning-text: #fde047;
        --orange-soft: rgba(251, 146, 60, 0.15); --orange-text: #fdba74;
        --neutral-soft: rgba(148, 163, 184, 0.16); --neutral-text: #cbd5e1;
        --info-soft: rgba(96, 165, 250, 0.15); --info-text: #93c5fd;
        --header-bg: #121726; --hero-from: #1b2140; --hero-to: #0e1220;
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4); --shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
        --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.45); --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
    }
}

:root[data-theme="dark"] {
    --bg: #0e1220; --surface: #161b2b; --surface-2: #1b2133; --surface-3: #232a3f;
    --border: #293047; --border-strong: #3a4360; --text: #e7eaf3; --text-2: #b7bfd1; --muted: #8b94ab;
    --primary: #818cf8; --primary-hover: #a5b4fc; --primary-soft: rgba(129, 140, 248, 0.15); --primary-soft-text: #c7d0ff;
    --on-primary: #0e1220; --focus-ring: rgba(129, 140, 248, 0.45);
    --danger: #f87171; --danger-hover: #fca5a5; --danger-soft: rgba(248, 113, 113, 0.14); --danger-text: #fca5a5;
    --success: #34d399; --success-soft: rgba(52, 211, 153, 0.14); --success-text: #6ee7b7;
    --warning-soft: rgba(250, 204, 21, 0.14); --warning-text: #fde047;
    --orange-soft: rgba(251, 146, 60, 0.15); --orange-text: #fdba74;
    --neutral-soft: rgba(148, 163, 184, 0.16); --neutral-text: #cbd5e1;
    --info-soft: rgba(96, 165, 250, 0.15); --info-text: #93c5fd;
    --header-bg: #121726; --hero-from: #1b2140; --hero-to: #0e1220;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4); --shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
    --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.45); --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
}

/* ---------- Nền tảng ---------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.55;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); text-decoration: underline; }
h1, h2, h3, h4 { margin: 0; line-height: 1.3; font-weight: 650; letter-spacing: -0.01em; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.125rem; }
h3 { font-size: 1rem; }
p { margin: 0 0 var(--space-3); }
p:last-child { margin-bottom: 0; }
hr { border: 0; border-top: 1px solid var(--border); margin: var(--space-5) 0; }
:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 2px; border-radius: var(--radius-xs); }
.icon { flex-shrink: 0; vertical-align: middle; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }
.skip-link { position: absolute; left: -999px; top: 0; padding: var(--space-2) var(--space-3); background: var(--primary); color: var(--on-primary); z-index: 100; }
.skip-link:focus { left: var(--space-3); top: var(--space-3); }

/* ---------- Tiện ích ---------- */
.muted { color: var(--muted); }
.small { font-size: 0.8125rem; }
.mono { font-family: var(--font-mono); font-size: 0.92em; letter-spacing: 0.01em; }
.nowrap { white-space: nowrap; }
.truncate { display: block; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.break { overflow-wrap: anywhere; }
.pre-line { white-space: pre-line; }
.text-right { text-align: right; }
.grow { flex: 1 1 auto; min-width: 0; }
.row { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: var(--space-5); }
.stack-sm { display: flex; flex-direction: column; gap: var(--space-3); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.w-full { width: 100%; }
.show-xs { display: none; }
.site-main { flex: 1 0 auto; }
.money { font-variant-numeric: tabular-nums; white-space: nowrap; }
.kbd { display: inline-block; min-width: 1.5em; padding: 0 5px; border: 1px solid var(--border-strong); border-bottom-width: 2px; border-radius: var(--radius-xs); font-family: var(--font-mono); font-size: 0.75rem; line-height: 1.5; text-align: center; color: var(--text-2); background: var(--surface-2); }

/* ---------- Header + tab ngang ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: var(--header-bg);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 var(--space-5);
    height: var(--header-height);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.brand { display: inline-flex; align-items: center; gap: var(--space-3); color: var(--text); font-weight: 700; white-space: nowrap; }
.brand:hover { color: var(--text); text-decoration: none; }
.brand-mark { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
.brand small { display: block; font-weight: 500; font-size: 0.75rem; color: var(--muted); line-height: 1.1; }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: var(--space-2); }

.tabs {
    display: flex;
    gap: var(--space-1);
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}
.tabs::-webkit-scrollbar { display: none; }

.tab-bar { border-top: 1px solid var(--border); }
.tab-bar .tabs { max-width: var(--content-max); margin: 0 auto; padding: 0 var(--space-4); }

.tab {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0 var(--space-3);
    min-height: 46px;
    color: var(--text-2);
    font-weight: 550;
    white-space: nowrap;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.tab:hover { color: var(--text); text-decoration: none; background: var(--surface-2); }
.tab.is-active { color: var(--primary); }
.tab.is-active::after { content: ""; position: absolute; left: var(--space-3); right: var(--space-3); bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--primary); }
.tab .tab-key { font-size: 0.7rem; color: var(--muted); border: 1px solid var(--border); border-radius: 4px; padding: 0 4px; line-height: 1.4; }
.tab .count { min-width: 20px; padding: 0 6px; border-radius: var(--radius-pill); background: var(--danger); color: #fff; font-size: 0.72rem; font-weight: 700; line-height: 20px; text-align: center; }

.sub-tabs { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-bottom: var(--space-5); }
.sub-tab { padding: 6px 14px; border-radius: var(--radius-pill); border: 1px solid var(--border); background: var(--surface); color: var(--text-2); font-weight: 550; font-size: 0.875rem; }
.sub-tab:hover { text-decoration: none; border-color: var(--border-strong); color: var(--text); }
.sub-tab.is-active { background: var(--primary-soft); color: var(--primary-soft-text); border-color: transparent; }

/* ---------- Khung trang ---------- */
.page { flex: 1 0 auto; width: 100%; max-width: var(--content-max); margin: 0 auto; padding: var(--space-6) var(--space-5) var(--space-8); }
.page-narrow { max-width: 760px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; margin-bottom: var(--space-5); }
.page-head h1 { font-size: 1.5rem; }
.page-head .sub { color: var(--muted); margin-top: var(--space-1); }
.back-link { display: inline-flex; align-items: center; gap: var(--space-1); font-size: 0.875rem; color: var(--muted); margin-bottom: var(--space-2); }

.site-footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 0.8125rem; }
.site-footer .inner { max-width: var(--content-max); margin: 0 auto; padding: var(--space-5); display: flex; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; }

.grid { display: grid; gap: var(--space-5); }
.grid-2 { display: grid; gap: var(--space-5); grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { display: grid; gap: var(--space-5); grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-main { display: grid; gap: var(--space-5); grid-template-columns: minmax(0, 1fr) 340px; align-items: start; }

/* ---------- Thẻ ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); min-width: 0; }
.card-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.card-header h2 { display: flex; align-items: center; gap: var(--space-2); }
.card-body { padding: var(--space-5); }
.card-footer { padding: var(--space-4) var(--space-5); border-top: 1px solid var(--border); background: var(--surface-2); border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
.card-footer.form-actions { display: flex; justify-content: flex-end; gap: var(--space-3); flex-wrap: wrap; }
.hint { color: var(--muted); font-size: 0.8125rem; margin: var(--space-1) 0 0; }

/* Thẻ số liệu */
.stats { display: grid; gap: var(--space-4); grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stat { display: flex; gap: var(--space-4); align-items: center; padding: var(--space-5); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); color: var(--text); box-shadow: var(--shadow-sm); min-width: 0; }
a.stat:hover { text-decoration: none; border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.stat-icon { width: 44px; height: 44px; flex-shrink: 0; border-radius: 12px; display: grid; place-items: center; }
.stat-label { display: block; color: var(--muted); font-size: 0.8125rem; font-weight: 550; }
.stat-value { display: block; font-size: 1.45rem; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.25; }
.stat.is-alert { border-color: var(--danger); background: var(--danger-soft); }
.stat.is-alert .stat-label, .stat.is-alert .stat-value { color: var(--danger-text); }
.tone-success { background: var(--success-soft); color: var(--success-text); }
.tone-warning { background: var(--warning-soft); color: var(--warning-text); }
.tone-danger { background: var(--danger-soft); color: var(--danger-text); }
.tone-info { background: var(--info-soft); color: var(--info-text); }
.tone-primary { background: var(--primary-soft); color: var(--primary-soft-text); }
.tone-neutral { background: var(--neutral-soft); color: var(--neutral-text); }

/* ---------- Nút ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
    min-height: 40px; padding: 0 var(--space-4);
    border: 1px solid transparent; border-radius: var(--radius);
    font: inherit; font-weight: 600; font-size: 0.9rem; line-height: 1;
    cursor: pointer; white-space: nowrap; text-decoration: none;
    transition: background-color .15s, border-color .15s, color .15s, box-shadow .15s;
}
.btn:hover { text-decoration: none; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: var(--on-primary); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-hover); color: var(--on-primary); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--surface-2); color: var(--text); }
.btn-ghost { background: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-3); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); color: #fff; }
.btn-danger-outline { background: var(--surface); color: var(--danger-text); border-color: var(--danger); }
.btn-danger-outline:hover { background: var(--danger-soft); color: var(--danger-text); }
.btn-success { background: var(--success); color: #fff; }
.btn-sm { min-height: 32px; padding: 0 var(--space-3); font-size: 0.8125rem; border-radius: var(--radius-sm); }
.btn-lg { min-height: 50px; padding: 0 var(--space-6); font-size: 1rem; border-radius: var(--radius-lg); }
.btn-block { width: 100%; }
.btn-icon { display: inline-grid; place-items: center; width: 40px; height: 40px; border: 0; border-radius: var(--radius); background: transparent; color: var(--text-2); cursor: pointer; }
.btn-icon:hover { background: var(--surface-3); color: var(--text); }
.btn-group { display: flex; gap: var(--space-2); flex-wrap: wrap; align-items: center; }

/* ---------- Form ---------- */
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field > label, .field-label { font-weight: 600; font-size: 0.875rem; color: var(--text-2); }
.req { color: var(--danger-text); }
.input, .select, .textarea {
    width: 100%; min-height: 42px; padding: 9px 12px;
    border: 1px solid var(--border-strong); border-radius: var(--radius);
    background: var(--surface); color: var(--text); font: inherit; font-size: 0.95rem;
}
.textarea { min-height: 90px; resize: vertical; line-height: 1.5; }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--focus-ring); }
.input.mono { font-family: var(--font-mono); }
.input-sm, .select-sm { min-height: 34px; padding: 5px 10px; font-size: 0.875rem; border-radius: var(--radius-sm); }
.form-grid { display: grid; gap: var(--space-4); grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid .span-2 { grid-column: span 2; }
.input-group { display: flex; gap: var(--space-2); }
.input-group .input, .input-group .select { flex: 1 1 auto; min-width: 0; }
.checkbox { display: flex; gap: var(--space-2); align-items: flex-start; cursor: pointer; font-size: 0.9rem; }
.checkbox input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--primary); }
.field-error { color: var(--danger-text); font-size: 0.8125rem; }
.search-box { position: relative; }
.search-box .icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.search-box .input { padding-left: 38px; }

/* Nhóm lựa chọn dạng thẻ (thời hạn, gói) */
.choice-group { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; inset: 0; }
.choice span { display: inline-flex; align-items: center; gap: var(--space-2); padding: 8px 14px; border: 1px solid var(--border-strong); border-radius: var(--radius); background: var(--surface); cursor: pointer; font-weight: 550; }
.choice input:checked + span { border-color: var(--primary); background: var(--primary-soft); color: var(--primary-soft-text); box-shadow: 0 0 0 1px var(--primary) inset; }
.choice input:focus-visible + span { box-shadow: 0 0 0 3px var(--focus-ring); }

/* ---------- Thông báo ---------- */
.alert { display: flex; gap: var(--space-3); align-items: flex-start; padding: var(--space-3) var(--space-4); border-radius: var(--radius); border: 1px solid transparent; font-size: 0.9rem; }
.alert > .icon { margin-top: 2px; }
.alert-info { background: var(--info-soft); color: var(--info-text); }
.alert-success { background: var(--success-soft); color: var(--success-text); }
.alert-warning { background: var(--warning-soft); color: var(--warning-text); }
.alert-danger { background: var(--danger-soft); color: var(--danger-text); border-color: color-mix(in srgb, var(--danger) 35%, transparent); }
.alert strong { font-weight: 700; }
.alert a { color: inherit; text-decoration: underline; }

/* ---------- Huy hiệu ---------- */
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 2px 10px; border-radius: var(--radius-pill); font-size: 0.78rem; font-weight: 650; white-space: nowrap; line-height: 1.6; }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; opacity: 0.85; }
.badge-plain::before { display: none; }
.badge-success { background: var(--success-soft); color: var(--success-text); }
.badge-warning { background: var(--warning-soft); color: var(--warning-text); }
.badge-danger { background: var(--danger-soft); color: var(--danger-text); }
.badge-orange { background: var(--orange-soft); color: var(--orange-text); }
.badge-neutral { background: var(--neutral-soft); color: var(--neutral-text); }
.badge-info { background: var(--info-soft); color: var(--info-text); }
.badge-primary { background: var(--primary-soft); color: var(--primary-soft-text); }

/* Cảnh báo chặn mở bán (runtime thiếu bản vá): viền trái đậm, chữ lớn hơn cảnh báo thường. */
.alert-strong { border-left: 4px solid var(--danger); font-size: 0.95rem; box-shadow: var(--shadow-sm); }
.alert-strong a { font-weight: 650; white-space: nowrap; }
.runtime-badge { margin-left: var(--space-2); vertical-align: 1px; font-variant-numeric: tabular-nums; }

/* ---------- Tài liệu dự án xem trong admin (docs/*.md) ---------- */
.doc { max-width: 900px; line-height: 1.65; overflow-wrap: anywhere; }
.doc > :first-child { margin-top: 0; }
.doc h2 { font-size: 1.2rem; margin: var(--space-7) 0 var(--space-3); }
.doc h3 { font-size: 1.02rem; margin: var(--space-6) 0 var(--space-2); }
.doc h2, .doc h3 { scroll-margin-top: calc(var(--header-height) + 64px); }
.doc h2:target, .doc h3:target { color: var(--primary); }
.doc h3:target { padding: var(--space-2) var(--space-3); margin-left: calc(-1 * var(--space-3)); border-radius: var(--radius); background: var(--primary-soft); color: var(--primary-soft-text); }
.doc p, .doc ul, .doc ol, .doc blockquote, .doc .table-wrap { margin: 0 0 var(--space-3); }
.doc ul, .doc ol { padding-left: 1.4em; }
.doc li { margin: 4px 0; }
.doc li > ul, .doc li > ol { margin: 4px 0 0; }
.doc hr { border: 0; border-top: 1px solid var(--border); margin: var(--space-6) 0; }
.doc code { font-family: var(--font-mono); font-size: 0.88em; padding: 1px 5px; border-radius: var(--radius-xs); background: var(--surface-2); border: 1px solid var(--border); overflow-wrap: anywhere; }
.doc blockquote { padding: var(--space-3) var(--space-4); border-left: 3px solid var(--info-text); background: var(--info-soft); color: var(--info-text); border-radius: var(--radius); }
.doc blockquote p:last-child { margin-bottom: 0; }
.doc .table { min-width: 640px; }
.doc .table td { vertical-align: top; }
.doc .table th { white-space: normal; }
.doc-checklist { list-style: none; padding-left: 0 !important; }
.doc-checklist > li { position: relative; padding-left: 28px; }
.doc-check { position: absolute; left: 0; top: 0.3em; width: 16px; height: 16px; border: 2px solid var(--border-strong); border-radius: var(--radius-xs); background: var(--surface); }
.doc-checklist > li.is-done > .doc-check { background: var(--success); border-color: var(--success); }

/* ---------- Bảng ---------- */
.table-wrap { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.table th { text-align: left; font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--muted); padding: 10px var(--space-4); border-bottom: 1px solid var(--border); background: var(--surface-2); white-space: nowrap; }
.table td { padding: 12px var(--space-4); border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table tbody tr:hover td { background: var(--surface-2); }
.table .cell-main { max-width: 280px; }
.table .cell-main > .muted { display: block; }
.table .cell-strong { font-weight: 600; color: var(--text); }
.table-compact td { padding: 8px var(--space-3); }
.table-matrix th:first-child, .table-matrix td:first-child { position: sticky; left: 0; background: var(--surface); z-index: 1; }
.table-matrix td .input { min-width: 90px; }

/* Danh sách */
.list { list-style: none; margin: 0; padding: 0; }
.list-item { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-3) var(--space-5); border-bottom: 1px solid var(--border); }
.list-item:last-child { border-bottom: 0; }
.list-title { font-weight: 600; color: var(--text); }
.list-meta { display: flex; flex-wrap: wrap; gap: 4px var(--space-3); color: var(--muted); font-size: 0.8125rem; }
.link-icon { display: inline-flex; align-items: center; gap: 6px; margin-top: 6px; }

/* Thiết bị của khách, nhóm theo sản phẩm (admin chi tiết khách) */
.device-group + .device-group { border-top: 1px solid var(--border); }
.device-group-head { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-1) var(--space-3); padding: var(--space-3) var(--space-5) var(--space-1); }

.dl { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: var(--space-2) var(--space-4); margin: 0; }
.dl dt { color: var(--muted); font-size: 0.875rem; }
.dl dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
.web-dl { grid-template-columns: 130px minmax(0, 1fr); align-items: baseline; }
.web-dl dd .btn { margin-left: var(--space-2); vertical-align: middle; }

.empty { display: flex; flex-direction: column; align-items: center; gap: var(--space-2); padding: var(--space-8) var(--space-5); color: var(--muted); text-align: center; }

.pagination { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-3) var(--space-5); border-top: 1px solid var(--border); }

/* ---------- Panel phải trượt (lịch sử / nhật ký) ---------- */
.side-panel {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 60;
    width: min(var(--panel-width), 100vw);
    background: var(--surface); border-left: 1px solid var(--border); box-shadow: var(--shadow-lg);
    transform: translateX(105%); transition: transform .22s ease;
    display: flex; flex-direction: column;
}
.side-panel.is-open { transform: translateX(0); }
.side-panel-head { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--border); }
.side-panel-body { flex: 1 1 auto; overflow-y: auto; padding: var(--space-3) 0; }
.panel-backdrop { position: fixed; inset: 0; background: rgba(10, 14, 26, 0.35); z-index: 55; opacity: 0; pointer-events: none; transition: opacity .2s; }
.panel-backdrop.is-open { opacity: 1; pointer-events: auto; }
.panel-toggle { position: fixed; right: 0; top: 45%; z-index: 40; writing-mode: vertical-rl; padding: var(--space-3) 8px; border: 1px solid var(--border); border-right: 0; border-radius: var(--radius) 0 0 var(--radius); background: var(--surface); color: var(--text-2); font: inherit; font-size: 0.8125rem; font-weight: 600; cursor: pointer; box-shadow: var(--shadow); }
.panel-toggle:hover { color: var(--primary); }

/* Dòng thời gian (ledger, nhật ký) */
.timeline { list-style: none; margin: 0; padding: 0 var(--space-5); }
.timeline li { position: relative; padding: 0 0 var(--space-4) var(--space-5); border-left: 2px solid var(--border); }
.timeline li:last-child { border-left-color: transparent; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 3px; width: 12px; height: 12px; border-radius: 50%; background: var(--surface); border: 2px solid var(--primary); }
.timeline .t-title { font-weight: 600; font-size: 0.9rem; }
.timeline .t-meta { color: var(--muted); font-size: 0.78rem; }
.timeline .t-note { font-size: 0.85rem; color: var(--text-2); margin-top: 2px; overflow-wrap: anywhere; }

/* ---------- Hộp thoại ---------- */
dialog.modal { width: min(520px, calc(100vw - 32px)); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 0; background: var(--surface); color: var(--text); box-shadow: var(--shadow-lg); }
dialog.modal::backdrop { background: rgba(10, 14, 26, 0.45); }
.modal-header { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-5) var(--space-5) var(--space-3); }
.modal-header h3 { font-size: 1.05rem; flex: 1 1 auto; }
.modal-icon { width: 40px; height: 40px; flex-shrink: 0; display: grid; place-items: center; border-radius: 12px; }
.modal-body { padding: 0 var(--space-5) var(--space-4); display: flex; flex-direction: column; gap: var(--space-3); }
.modal-footer { display: flex; justify-content: flex-end; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-top: 1px solid var(--border); background: var(--surface-2); border-radius: 0 0 var(--radius-lg) var(--radius-lg); flex-wrap: wrap; }

/* ---------- Toast ---------- */
.toast-region { position: fixed; left: 50%; bottom: var(--space-6); transform: translateX(-50%); z-index: 90; width: min(460px, calc(100vw - 32px)); }
.toast { display: flex; gap: var(--space-3); align-items: center; padding: var(--space-3) var(--space-4); border-radius: var(--radius); background: #1b2133; color: #fff; box-shadow: var(--shadow-lg); font-weight: 550; }
.toast.is-error { background: var(--danger); }

/* ---------- Auth ---------- */
.auth-wrap { flex: 1 0 auto; display: grid; place-items: center; padding: var(--space-7) var(--space-4); }
.auth-card { width: min(440px, 100%); padding: var(--space-7); }
.auth-card h1 { font-size: 1.4rem; margin: var(--space-4) 0 var(--space-1); }
.auth-card .brand-mark { width: 44px; height: 44px; border-radius: 12px; }
.auth-card .brand-mark.tone-warning { box-shadow: none; }
.auth-target { margin: var(--space-2) 0 var(--space-1); padding: var(--space-2) var(--space-3); border-radius: var(--radius); background: var(--primary-soft); color: var(--primary-soft-text); font-size: 0.925rem; }
/* Trang chọn tài khoản (tool desktop đăng nhập khi trình duyệt đã có phiên) */
.account-choice { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-4); border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface-2); }
.account-choice-avatar { flex: none; width: 44px; height: 44px; display: grid; place-items: center; border-radius: var(--radius-pill); background: var(--primary-soft); color: var(--primary-soft-text); font-weight: 700; letter-spacing: 0.02em; }
.account-choice-text { display: flex; flex-direction: column; min-width: 0; line-height: 1.4; }
.btn-account { justify-content: flex-start; padding: var(--space-3) var(--space-5); white-space: normal; text-align: left; }
.btn-account svg { flex: none; }
.btn-account-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; line-height: 1.35; }
.btn-account-email { font-weight: 500; font-size: 0.875rem; opacity: 0.9; }
@media (hover: none) { .hide-touch { display: none; } }
.retry-box { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); padding: var(--space-4); background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius); }
.retry-timer { font-size: 1.6rem; font-weight: 700; letter-spacing: 0.04em; color: var(--text); font-variant-numeric: tabular-nums; }
.divider { display: flex; align-items: center; gap: var(--space-3); color: var(--muted); font-size: 0.8125rem; margin: var(--space-4) 0; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.btn-google { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-google:hover { background: var(--surface-2); color: var(--text); }
.totp-key { font-family: var(--font-mono); font-size: 1.05rem; letter-spacing: 0.08em; padding: var(--space-3) var(--space-4); background: var(--surface-2); border: 1px dashed var(--border-strong); border-radius: var(--radius); text-align: center; overflow-wrap: anywhere; }

/* ---------- Portal: trang sản phẩm ---------- */
.hero { background: linear-gradient(180deg, var(--hero-from), var(--hero-to)); border-bottom: 1px solid var(--border); }
.hero-inner { max-width: var(--content-max); margin: 0 auto; padding: var(--space-8) var(--space-5) var(--space-7); display: flex; justify-content: space-between; gap: var(--space-6); align-items: center; flex-wrap: wrap; }
.hero h1 { font-size: clamp(1.6rem, 3vw, 2.2rem); max-width: 18ch; }
.hero p { color: var(--text-2); max-width: 56ch; margin-top: var(--space-3); font-size: 1.02rem; }
.product-nav { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.product-chip { display: inline-flex; align-items: center; gap: var(--space-2); padding: 10px 16px; border-radius: var(--radius-pill); background: var(--surface); border: 1px solid var(--border); color: var(--text); font-weight: 600; box-shadow: var(--shadow-sm); }
.product-chip:hover { text-decoration: none; border-color: var(--primary); color: var(--primary); }

.product-section { scroll-margin-top: calc(var(--header-height) + 16px); }
.product-head { display: flex; gap: var(--space-4); align-items: center; margin-bottom: var(--space-4); }
.product-icon { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary-soft-text); font-weight: 800; font-size: 1.1rem; flex-shrink: 0; overflow: hidden; }
.product-icon img { width: 100%; height: 100%; object-fit: cover; }
.plans { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.plan-card { display: flex; flex-direction: column; gap: var(--space-4); padding: var(--space-6); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl); box-shadow: var(--shadow-sm); position: relative; }
.plan-card.is-featured { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary) inset, var(--shadow-md); }
.plan-card .ribbon { position: absolute; top: -12px; right: var(--space-5); background: var(--primary); color: var(--on-primary); font-size: 0.75rem; font-weight: 700; padding: 3px 10px; border-radius: var(--radius-pill); }
.plan-name { font-size: 1.15rem; font-weight: 700; }
.plan-price { display: flex; align-items: baseline; gap: var(--space-2); }
.plan-price .amount { font-size: 1.8rem; font-weight: 800; letter-spacing: -0.02em; }
.plan-price .per { color: var(--muted); }
.feature-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-2); font-size: 0.9rem; }
.feature-list li { display: flex; gap: var(--space-2); align-items: flex-start; }
.feature-list .yes { color: var(--success); }
.feature-list .no { color: var(--muted); }
.duration-options { display: flex; flex-direction: column; gap: var(--space-2); }
.duration-option { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: 10px 14px; border: 1px solid var(--border-strong); border-radius: var(--radius); cursor: pointer; background: var(--surface); }
.duration-option:hover { border-color: var(--primary); }
.duration-option input { accent-color: var(--primary); width: 18px; height: 18px; }
.duration-option:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); }
.duration-option .save { color: var(--success-text); font-size: 0.78rem; font-weight: 650; }
.compare { margin-top: var(--space-5); }
.compare td, .compare th { text-align: center; }
.compare td:first-child, .compare th:first-child { text-align: left; }

/* Thẻ subscription của khách */
.sub-card { display: flex; flex-direction: column; gap: var(--space-4); padding: var(--space-5); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.sub-card-head { display: flex; align-items: center; gap: var(--space-3); }
.sub-progress { height: 8px; border-radius: var(--radius-pill); background: var(--surface-3); overflow: hidden; }
.sub-progress > span { display: block; height: 100%; background: var(--primary); border-radius: inherit; }
.sub-progress.is-warning > span { background: #f59e0b; }
.sub-progress.is-danger > span { background: var(--danger); }
.ent-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--space-2) var(--space-4); font-size: 0.85rem; }
.ent-grid > div { min-width: 0; overflow-wrap: anywhere; }
.ent-grid .k { color: var(--muted); }

/* ---------- Trang thanh toán (mobile-first) ---------- */
.pay { display: grid; gap: var(--space-5); grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); align-items: start; }
.pay-qr { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); padding: var(--space-6); }
.pay-qr img { width: min(300px, 100%); aspect-ratio: 1; border-radius: var(--radius-lg); background: #fff; padding: 10px; border: 1px solid var(--border); }
.pay-amount { font-size: 2rem; font-weight: 800; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.pay-rows { display: flex; flex-direction: column; }
.pay-row { display: flex; align-items: center; gap: var(--space-3); padding: 12px var(--space-5); border-bottom: 1px solid var(--border); }
.pay-row:last-child { border-bottom: 0; }
.pay-row .k { color: var(--muted); font-size: 0.8125rem; min-width: 104px; }
.pay-row .v { flex: 1 1 auto; font-weight: 650; overflow-wrap: anywhere; }
.pay-row.is-key { background: var(--warning-soft); }
.pay-row.is-key .v { font-family: var(--font-mono); font-size: 1.15rem; letter-spacing: 0.06em; color: var(--text); }
.countdown { font-variant-numeric: tabular-nums; font-weight: 700; }
.pay-status { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-radius: var(--radius-lg); }
.spinner { width: 18px; height: 18px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin .9s linear infinite; flex-shrink: 0; }
@keyframes spin { to { transform: rotate(360deg); } }
.pay-success { text-align: center; padding: var(--space-8) var(--space-6); }
.pay-success .big-check { width: 72px; height: 72px; margin: 0 auto var(--space-4); border-radius: 50%; display: grid; place-items: center; background: var(--success-soft); color: var(--success-text); }

/* Ô copy */
.copy-row { display: flex; align-items: center; gap: var(--space-2); }

/* ---------- Mã / khoá lớn ---------- */
.code-box { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-4); border-radius: var(--radius); background: var(--surface-2); border: 1px dashed var(--border-strong); flex-wrap: wrap; }
.code-box .code { font-family: var(--font-mono); font-size: 1.1rem; letter-spacing: 0.04em; overflow-wrap: anywhere; }

/* ---------- Phân trang, lọc ---------- */
.filters { display: flex; gap: var(--space-3); align-items: flex-end; flex-wrap: wrap; }
.filters .field { min-width: 160px; flex: 1 1 160px; }
.filters .field.is-wide { flex: 3 1 260px; }

/* ---------- Đáp ứng ---------- */
@media (max-width: 1024px) {
    .grid-main { grid-template-columns: minmax(0, 1fr); }
    .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
    .pay { grid-template-columns: minmax(0, 1fr); }
    .pay-qr { order: -1; }
    .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); }
    .form-grid { grid-template-columns: minmax(0, 1fr); }
    .form-grid .span-2 { grid-column: auto; }
}

/* Bảng nhiều cột thành thẻ từ khổ máy tính bảng trở xuống: ở 768px bảng 7–9 cột phải cuộn ngang mới thấy nút thao tác. */
@media (max-width: 900px) {
    .table.responsive thead { display: none; }
    .table.responsive, .table.responsive tbody, .table.responsive tr, .table.responsive td { display: block; width: 100%; }
    .table.responsive tr { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--border); }
    /* Nhãn cột bên trái, nội dung bên phải; ô nhiều dòng (mã đơn + email, giờ tạo + giờ trả) xếp dọc ở cột phải. */
    .table.responsive td { border: 0; padding: 3px 0; display: grid; grid-template-columns: auto minmax(0, 1fr); column-gap: var(--space-3); justify-items: end; align-items: start; text-align: right; line-height: 1.5rem; }
    .table.responsive td::before { content: attr(data-label); color: var(--muted); font-size: 0.8125rem; text-align: left; grid-column: 1; grid-row: 1; justify-self: start; align-self: start; line-height: 1.5rem; }
    .table.responsive td > * { grid-column: 2; min-width: 0; max-width: 100%; }
    /* Ô thao tác (không có nhãn): các nút dồn phải, xuống dòng khi hẹp. */
    .table.responsive td:not([data-label]):not(.cell-main) { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: var(--space-2); padding-top: var(--space-2); }
    .table.responsive td:not([data-label])::before { display: none; }
    .table.responsive td.cell-main { max-width: none; display: block; justify-items: normal; text-align: left; font-size: 1rem; }
    .table.responsive td.cell-main::before { display: none; }
    .table.responsive td:empty { display: none; }
}

@media (max-width: 640px) {
    body { font-size: 15px; }
    .header-inner { padding: 0 var(--space-4); gap: var(--space-3); }
    .brand small, .hide-xs { display: none; }
    .show-xs { display: block; }
    .page { padding: var(--space-5) var(--space-4) var(--space-7); }
    .page-head h1 { font-size: 1.3rem; }
    .stats { grid-template-columns: minmax(0, 1fr); gap: var(--space-3); }
    .stat { padding: var(--space-4); }
    .card-header, .card-body { padding-left: var(--space-4); padding-right: var(--space-4); }
    .list-item { padding-left: var(--space-4); padding-right: var(--space-4); align-items: flex-start; flex-wrap: wrap; }
    .dl { grid-template-columns: minmax(0, 1fr); gap: 2px; }
    .dl dd { margin-bottom: var(--space-3); }
    .tab .tab-key { display: none; }
    .btn-lg { width: 100%; }
    .pay-row { padding: 12px var(--space-4); flex-wrap: wrap; }
    .pay-row .k { min-width: 0; width: 100%; }
    .pay-amount { font-size: 1.75rem; }
    .hero-inner { padding: var(--space-6) var(--space-4); }
    .plan-card { padding: var(--space-5); }
    .auth-card { padding: var(--space-6) var(--space-5); }
    .panel-toggle { top: auto; bottom: 88px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Biểu đồ của trang Tổng quan: một chuỗi, một màu, cột mảnh, đầu cột bo 4px, khe 2px; lưới và trục lùi về sau. */
.vchart-grid { display: grid; gap: var(--space-5); grid-template-columns: repeat(2, minmax(0, 1fr)); }
.vchart { display: flex; align-items: stretch; gap: 2px; height: 160px; border-bottom: 1px solid var(--border-strong); }
.vchart-col { position: relative; flex: 1 1 0; min-width: 0; display: flex; align-items: flex-end; outline: none; }
.vchart-bar { display: block; width: 100%; max-width: 28px; margin: 0 auto; background: var(--primary); border-radius: 4px 4px 0 0; }
.vchart-col:hover, .vchart-col:focus-visible { background: var(--surface-3); }
.vchart-tip { display: none; position: absolute; z-index: 5; bottom: calc(100% - 28px); left: 0; padding: 6px 10px; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 8px; box-shadow: var(--shadow-sm); color: var(--text-2); font-size: 0.8125rem; white-space: nowrap; pointer-events: none; }
.vchart-tip strong { color: var(--text); font-variant-numeric: tabular-nums; }
.vchart-tip-end { left: auto; right: 0; }
.vchart-col:hover .vchart-tip, .vchart-col:focus-visible .vchart-tip { display: block; }
.vchart-axis { display: flex; justify-content: space-between; gap: var(--space-3); margin-top: var(--space-2); color: var(--muted); font-size: 0.78rem; }
.hbar { display: grid; grid-template-columns: minmax(90px, 130px) minmax(0, 1fr) auto; gap: var(--space-3); align-items: center; padding: 6px 0; }
.hbar-label { color: var(--text-2); }
.hbar-track { display: block; height: 10px; background: var(--surface-3); border-radius: 4px; overflow: hidden; }
.hbar-fill { display: block; height: 100%; background: var(--primary); border-radius: 4px; }
.hbar-value { font-variant-numeric: tabular-nums; }
@media (max-width: 900px) { .vchart-grid { grid-template-columns: minmax(0, 1fr); } }