/* ═══════════════════════════════════════════════════════════
   SaleLink v2 — Design System (minimal, mobile-first)
   ═══════════════════════════════════════════════════════════ */

:root {
    /* neutral scale */
    --n0: #ffffff;
    --n50: #fafafa;
    --n100: #f4f4f5;
    --n200: #e8e8ea;
    --n300: #d4d4d8;
    --n400: #a1a1aa;
    --n500: #71717a;
    --n600: #52525b;
    --n700: #3f3f46;
    --n900: #18181b;
    --ink: #09090b;

    /* semantic */
    --ok: #16a34a;
    --ok-bg: #f0fdf4;
    --warn: #d97706;
    --warn-bg: #fffbeb;
    --bad: #dc2626;
    --bad-bg: #fef2f2;
    --info: #2563eb;
    --info-bg: #eff6ff;

    --r-sm: 8px;
    --r: 12px;
    --r-lg: 16px;
    --r-xl: 22px;

    --shadow-sm: 0 1px 2px rgba(9, 9, 11, .05);
    --shadow: 0 2px 8px rgba(9, 9, 11, .06);
    --shadow-lg: 0 12px 32px rgba(9, 9, 11, .12);

    --sans: 'Kanit', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --nav-h: 56px;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

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

/* ── Scrollbar (เข้ากับธีม) ──────────────────────────────── */
html {
    scrollbar-width: thin;
    scrollbar-color: var(--n300) var(--n100);
}
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--n100); }
::-webkit-scrollbar-thumb {
    background: var(--n300);
    border-radius: 99px;
    border: 2px solid var(--n100);
}
::-webkit-scrollbar-thumb:hover { background: var(--ink); }

body {
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.6;
    color: var(--ink);
    background: var(--n50);
    font-weight: 400;
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
img { max-width: 100%; display: block; }

/* โลโก้รูปภาพในกล่อง mark (navbar/footer/sidebar) */
.mark img, .brand .mark img, .auth-logo .mark img, .f-brand .mark img {
    width: 100%; height: 100%;
    object-fit: cover;
    border-radius: inherit;
    display: block;
}

/* ชื่อแบรนด์ xlinkx.xyz — ไล่เฉดแดงตามสีโลโก้ */
.brand-base {
    font-weight: 800;
    letter-spacing: -.02em;
    color: #f3010c;
    background: linear-gradient(110deg, #f3010c 10%, #b91c1c 55%, #680007 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.brand-tld {
    font-weight: 800;
    letter-spacing: -.02em;
    color: #f3010c;
}

::selection { background: var(--ink); color: #fff; }

/* ── Typography ─────────────────────────────────────────── */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.3; letter-spacing: -.01em; }
h1 { font-size: 26px; }
h2 { font-size: 20px; }
h3 { font-size: 17px; }
.muted { color: var(--n500); }
.tiny { font-size: 12.5px; }
.small { font-size: 13.5px; }
.mono { font-family: ui-monospace, 'SF Mono', Menlo, monospace; font-size: 13px; }

/* ── Layout ─────────────────────────────────────────────── */
.container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 560px; }
.stack { display: flex; flex-direction: column; gap: 14px; }
.row { display: flex; align-items: center; gap: 10px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.wrap { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.center { text-align: center; }
.hide { display: none !important; }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 7px;
    border: 1px solid transparent; border-radius: var(--r);
    padding: 11px 18px; font-size: 14.5px; font-weight: 500;
    cursor: pointer; transition: background .15s, border-color .15s, opacity .15s, transform .1s;
    white-space: nowrap; min-height: 44px; background: none; color: inherit;
}
.btn:active { transform: scale(.985); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn i { font-size: 17px; }

.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--n700); }

.btn-outline { background: var(--n0); border-color: var(--n200); color: var(--n900); box-shadow: var(--shadow-sm); }
.btn-outline:hover:not(:disabled) { border-color: var(--n400); background: var(--n50); }

.btn-ghost { color: var(--n600); }
.btn-ghost:hover:not(:disabled) { background: var(--n100); color: var(--ink); }

.btn-danger { background: var(--bad-bg); color: var(--bad); }
.btn-danger:hover:not(:disabled) { background: #fee2e2; }

.btn-sm { padding: 7px 13px; font-size: 13.5px; min-height: 36px; border-radius: var(--r-sm); }
.btn-lg { padding: 14px 24px; font-size: 16px; min-height: 52px; }
.btn-block { width: 100%; }
.btn-icon { width: 38px; min-height: 38px; padding: 0; border-radius: var(--r-sm); }

/* ── Cards & panels ─────────────────────────────────────── */
.card {
    background: var(--n0); border: 1px solid var(--n200);
    border-radius: var(--r-lg); padding: 18px;
}
.card-flat { background: var(--n0); border-radius: var(--r-lg); padding: 18px; box-shadow: var(--shadow); }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.card-head h2, .card-head h3 { margin: 0; }
.divider { height: 1px; background: var(--n200); margin: 18px 0; border: 0; }

/* ── Forms ──────────────────────────────────────────────── */
.field { margin-bottom: 16px; }
.field > label {
    display: block; font-size: 13.5px; font-weight: 500;
    margin-bottom: 6px; color: var(--n700);
}
.field .hint, .hint { font-size: 12.5px; color: var(--n500); margin-top: 5px; line-height: 1.5; }

input[type=text], input[type=password], input[type=email], input[type=url],
input[type=number], input[type=tel], input[type=search], select, textarea {
    width: 100%; background: var(--n0);
    border: 1px solid var(--n300); border-radius: var(--r);
    padding: 11px 13px; font-size: 15px; color: var(--ink);
    transition: border-color .15s, box-shadow .15s;
    -webkit-appearance: none; appearance: none;
}
textarea { resize: vertical; min-height: 96px; line-height: 1.6; }
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px;
}
input:focus, textarea:focus, select:focus {
    outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px rgba(9, 9, 11, .07);
}
input[type=search]::-webkit-search-decoration,
input[type=search]::-webkit-search-cancel-button { -webkit-appearance: none; }
input::placeholder, textarea::placeholder { color: var(--n400); }
input:disabled, textarea:disabled { background: var(--n100); color: var(--n500); }

.input-group { display: flex; gap: 8px; }
.input-group input { flex: 1; min-width: 0; }

/* ช่องกรอกพร้อมไอคอนนำหน้า */
.input-icon { position: relative; flex: 1; min-width: 0; }
.input-icon > i {
    position: absolute; left: 13px; top: 50%;
    transform: translateY(-50%);
    color: var(--n400); font-size: 16px;
    pointer-events: none;
}
.input-icon > input { padding-left: 38px; }

.form-grid { display: grid; grid-template-columns: 1fr; gap: 0 14px; }
.form-grid .full { grid-column: 1 / -1; }

/* prefix input (slug) */
.prefixed { display: flex; align-items: center; border: 1px solid var(--n300); border-radius: var(--r); background: var(--n0); overflow: hidden; transition: border-color .15s, box-shadow .15s; }
.prefixed:focus-within { border-color: var(--ink); box-shadow: 0 0 0 3px rgba(9, 9, 11, .07); }
.prefixed .pfx { padding: 0 2px 0 12px; font-size: 13.5px; color: var(--n500); white-space: nowrap; }
.prefixed input { border: none !important; box-shadow: none !important; padding-left: 2px; }

/* switch */
.switch { position: relative; display: inline-block; width: 46px; height: 27px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.switch .track {
    position: absolute; inset: 0; background: var(--n300);
    border-radius: 99px; cursor: pointer; transition: background .18s;
}
.switch .track::before {
    content: ''; position: absolute; width: 21px; height: 21px; left: 3px; top: 3px;
    background: #fff; border-radius: 50%; transition: transform .18s; box-shadow: var(--shadow-sm);
}
.switch input:checked + .track { background: var(--ink); }
.switch input:checked + .track::before { transform: translateX(19px); }
.switch input:focus-visible + .track { box-shadow: 0 0 0 3px rgba(9, 9, 11, .15); }

.switch-row { display: flex; align-items: center; gap: 11px; padding: 4px 0; }
.switch-row .sw-label { font-size: 14.5px; font-weight: 500; }
.switch-row .sw-sub { font-size: 12.5px; color: var(--n500); }

/* ── Badges & pills ─────────────────────────────────────── */
.badge {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 3px 9px; border-radius: 99px;
    font-size: 12px; font-weight: 500; white-space: nowrap;
}
.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-bad { background: var(--bad-bg); color: var(--bad); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-muted { background: var(--n100); color: var(--n500); }
.badge-dark { background: var(--ink); color: #fff; }

/* ── Empty & loading ────────────────────────────────────── */
.empty { padding: 44px 20px; text-align: center; color: var(--n500); }
.empty > i { font-size: 40px; color: var(--n300); display: block; margin-bottom: 12px; }
.empty h3 { color: var(--n700); margin-bottom: 6px; }
.empty p { font-size: 14px; max-width: 320px; margin: 0 auto 18px; }
.spin { display: inline-block; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.skeleton { background: linear-gradient(90deg, var(--n100) 25%, var(--n200) 50%, var(--n100) 75%); background-size: 200% 100%; animation: sk 1.4s infinite; border-radius: var(--r-sm); }
@keyframes sk { to { background-position: -200% 0; } }

/* ── Progress (quota) ───────────────────────────────────── */
.meter { height: 6px; background: var(--n200); border-radius: 99px; overflow: hidden; }
.meter > span { display: block; height: 100%; background: var(--ink); border-radius: 99px; transition: width .4s ease; }
.meter.is-full > span { background: var(--bad); }
.meter.is-near > span { background: var(--warn); }

/* ── Tabs ───────────────────────────────────────────────── */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--n200); margin-bottom: 18px; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
    padding: 10px 14px; font-size: 14.5px; font-weight: 500; color: var(--n500);
    border-bottom: 2px solid transparent; cursor: pointer; white-space: nowrap; background: none; border-top: 0; border-left: 0; border-right: 0;
}
.tab:hover { color: var(--n900); }
.tab.active { color: var(--ink); border-bottom-color: var(--ink); }
.tab i { margin-right: 6px; font-size: 15px; }

/* ── Table (responsive → cards on mobile) ───────────────── */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
table.tbl th {
    text-align: left; padding: 10px 12px; font-size: 12.5px; font-weight: 500;
    color: var(--n500); border-bottom: 1px solid var(--n200); white-space: nowrap;
}
table.tbl td { padding: 12px; border-bottom: 1px solid var(--n100); vertical-align: middle; }
table.tbl tbody tr:last-child td { border-bottom: 0; }
table.tbl tbody tr:hover { background: var(--n50); }

/* ── Modal ──────────────────────────────────────────────── */
.modal-backdrop {
    position: fixed; inset: 0; background: rgba(9, 9, 11, .45);
    backdrop-filter: blur(2px); z-index: 900;
    display: flex; align-items: flex-end; justify-content: center;
    padding: 0; animation: fade .18s ease;
}
@keyframes fade { from { opacity: 0; } }
.modal {
    background: var(--n0); width: 100%; max-width: 480px;
    border-radius: var(--r-xl) var(--r-xl) 0 0;
    padding: 22px 20px calc(22px + env(safe-area-inset-bottom));
    max-height: 92vh; overflow-y: auto;
    animation: slideUp .26s cubic-bezier(.22, 1, .36, 1);
}
@keyframes slideUp { from { transform: translateY(100%); } }
.modal-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.modal-head h3 { margin: 0; font-size: 18px; }
.modal-close { border: none; background: var(--n100); width: 32px; height: 32px; border-radius: 50%; color: var(--n600); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.modal-close:hover { background: var(--n200); }
.modal-grabber { width: 36px; height: 4px; background: var(--n300); border-radius: 99px; margin: -8px auto 14px; }

/* ── Utilities ──────────────────────────────────────────── */
.mt-0 { margin-top: 0; } .mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; } .mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.gap-sm { gap: 6px; } .gap-lg { gap: 18px; }

@media (max-width: 639px) { .hide-sm { display: none; } }

/* ═══ Tablet / Desktop ═══════════════════════════════════ */
@media (min-width: 640px) {
    body { font-size: 15px; }
    h1 { font-size: 30px; }
    .container { padding: 0 24px; }
    .form-grid { grid-template-columns: 1fr 1fr; }
    .modal-backdrop { align-items: center; padding: 24px; }
    .modal { border-radius: var(--r-xl); padding: 24px; }
    .modal-grabber { display: none; }
    .card, .card-flat { padding: 22px; }
}

@media (min-width: 900px) {
    h1 { font-size: 34px; }
}

/* ═══ Dark-mode-safe focus for keyboard users ════════════ */
:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }