/* ===== سیستم حسابداری — استایل پایه (بدون نیاز به Node/Build) ===== */
@font-face { font-family: "Vazirmatn"; src: url("../fonts/Vazirmatn-variable.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }

:root {
    --bg: #f3f5f8;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --border: #e2e7ee;
    --border-strong: #cbd3de;
    --text: #1d2635;
    --text-2: #5b6779;
    --text-3: #687384;
    --primary: #1f5f8b;
    --primary-600: #174b6e;
    --primary-50: #eaf2f8;
    --success: #1e7d4f;
    --success-50: #e7f5ee;
    --warning: #9a6200;
    --warning-50: #fff5e0;
    --danger: #b3261e;
    --danger-50: #fdecea;
    --info: #2563a8;
    --info-50: #e9f1fb;
    --sidebar: #16212f;
    --sidebar-2: #1e2c3d;
    --sidebar-text: #c6d0dc;
    --radius: 8px;
    --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .05);
    --font: "Vazirmatn", "IRANSans", Tahoma, "Segoe UI", sans-serif;
    --fs-xs: 12px;
    --fs-sm: 13px;
    --fs-md: 14px;
    --fs-lg: 16px;
    --fs-xl: 20px;
    --fs-2xl: 26px;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
    font-family: var(--font);
    font-size: var(--fs-md);
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    direction: rtl;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.sidebar :focus-visible { outline-color: #9fd0f5; outline-offset: -2px; }
main:focus { outline: none; }
.skip-link { position: fixed; inset-inline-start: 1rem; top: -100px; z-index: 100; padding: .55rem 1rem; color: #fff; background: var(--primary); border-radius: 6px; }
.skip-link:focus { top: .75rem; color: #fff; }
h1, h2, h3, h4 { margin: 0 0 .5rem; line-height: 1.4; font-weight: 700; }
h1 { font-size: var(--fs-xl); }
h2 { font-size: var(--fs-lg); }
h3 { font-size: var(--fs-md); }
.ltr { direction: ltr; unicode-bidi: embed; }
.num, td.num, th.num { font-variant-numeric: tabular-nums; }
.muted { color: var(--text-2); }
.small { font-size: var(--fs-xs); }
.nowrap { white-space: nowrap; }
.text-end { text-align: left; }
.text-center { text-align: center; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-2 { margin-top: .75rem; }
.mb-2 { margin-bottom: .75rem; }
.gap { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.spacer { flex: 1; }
.hidden { display: none !important; }

/* ===== Layout ===== */
.app { display: flex; min-height: 100vh; }
.sidebar {
    width: 250px;
    flex-shrink: 0;
    background: var(--sidebar);
    color: var(--sidebar-text);
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}
.nav-close, .nav-backdrop { display: none; }
.brand {
    display: flex; align-items: center; gap: .6rem;
    padding: 1rem 1.1rem;
    border-bottom: 1px solid rgba(255,255,255,.07);
    color: #fff;
    font-weight: 700;
}
.brand-mark {
    width: 32px; height: 32px; border-radius: 8px;
    background: linear-gradient(135deg, #2f80b7, #1f5f8b);
    display: grid; place-items: center; font-size: var(--fs-lg);
}
.brand small { display: block; font-weight: 400; color: var(--sidebar-text); font-size: var(--fs-xs); }
.nav { padding: .5rem 0 2rem; }
.nav-group > summary {
    list-style: none;
    cursor: pointer;
    padding: .55rem 1.1rem;
    font-weight: 600;
    color: #e8eef5;
    display: flex; align-items: center; gap: .55rem;
    user-select: none;
}
.nav-group > summary::-webkit-details-marker { display: none; }
.nav-group > summary::after { content: "‹"; margin-inline-start: auto; transition: transform .15s; opacity: .6; }
.nav-group[open] > summary::after { transform: rotate(-90deg); }
.nav-group > summary:hover { background: var(--sidebar-2); }
.nav a {
    display: block;
    padding: .38rem 2.6rem .38rem 1rem;
    color: var(--sidebar-text);
    font-size: var(--fs-sm);
}
.nav a:hover { background: var(--sidebar-2); color: #fff; text-decoration: none; }
.nav a.active { background: rgba(47,128,183,.22); color: #fff; border-inline-start: 3px solid #3d95d0; }
.nav .nav-single { padding-inline-start: 1.1rem; font-weight: 600; color: #e8eef5; font-size: var(--fs-md); }
.ico { width: 18px; text-align: center; opacity: .85; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
    display: flex; align-items: center; gap: .75rem;
    padding: .6rem 1.25rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 20;
}
.topbar form { margin: 0; }
.topbar select { min-width: 150px; }
.btn.menu-toggle { display: none; }
.content { padding: 1.25rem; max-width: 1500px; width: 100%; }

.page-head { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; margin-bottom: 1rem; }
.page-head h1 { margin: 0; }
.page-head .actions { margin-inline-start: auto; display: flex; gap: .5rem; flex-wrap: wrap; }
.breadcrumb { color: var(--text-3); font-size: var(--fs-xs); }

/* ===== Cards ===== */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}
.card-head {
    display: flex; align-items: center; gap: .5rem;
    padding: .7rem 1rem;
    border-bottom: 1px solid var(--border);
}
.card-head h2, .card-head h3 { margin: 0; }
.card-body { padding: 1rem; }
.card-body.p0 { padding: 0; }
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.kpi { padding: .9rem 1rem; }
.kpi .label { color: var(--text-2); font-size: var(--fs-sm); }
.kpi .value { font-size: var(--fs-2xl); font-weight: 700; margin-top: .2rem; }
.kpi .sub { font-size: var(--fs-xs); color: var(--text-3); }

/* ===== Forms ===== */
.form-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .8rem 1rem; }
.form-grid .span-2 { grid-column: span 2; }
.form-grid .span-3 { grid-column: span 3; }
.form-grid .span-4 { grid-column: 1 / -1; }
.field label { display: block; font-size: var(--fs-sm); color: var(--text-2); margin-bottom: .25rem; font-weight: 500; }
.field .req { color: var(--danger); }
.field .hint { font-size: var(--fs-xs); color: var(--text-3); margin-top: .2rem; }
input[type=text], input[type=password], input[type=email], input[type=number], input[type=url], input:not([type]), select, textarea {
    width: 100%;
    font: inherit;
    color: inherit;
    padding: .45rem .6rem;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    background: #fff;
    transition: border-color .12s, box-shadow .12s;
}
textarea { min-height: 70px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(31,95,139,.15); }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--primary); outline-offset: 1px; }
input[readonly], input:disabled, select:disabled { background: var(--surface-2); color: var(--text-2); }
input.num, input.jdate { direction: ltr; text-align: left; }
input.jdate { text-align: center; }
.is-invalid { border-color: var(--danger) !important; background: #fffafa !important; }
.invalid { color: var(--danger); font-size: var(--fs-xs); margin-top: .2rem; }
.check { display: inline-flex; align-items: center; gap: .4rem; cursor: pointer; }
.check input { width: 16px; height: 16px; }
.checks { display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; }
.form-actions { display: flex; gap: .5rem; flex-wrap: wrap; padding: .9rem 1rem; border-top: 1px solid var(--border); background: var(--surface-2); border-radius: 0 0 var(--radius) var(--radius); }
.sticky-bar { position: sticky; bottom: 0; z-index: 15; display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1rem; padding: .6rem 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: 0 -6px 16px rgba(16,24,40,.08); }
.sticky-bar .totals { flex: 1 1 420px; }
.sticky-bar .form-actions { padding: 0; border: 0; background: transparent; }
.aux-actions { display: flex; align-items: center; justify-content: flex-end; gap: .5rem; flex-wrap: wrap; margin: .45rem 0 1rem; }
.kbd-hint { margin: .35rem 0 1rem; color: var(--text-2); font-size: var(--fs-xs); }
.kbd-hint kbd { display: inline-block; min-width: 1.4em; padding: 0 .2rem; border: 1px solid var(--border-strong); border-radius: 4px; background: var(--surface); text-align: center; font: inherit; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .35rem;
    font: inherit; font-size: var(--fs-sm); font-weight: 600;
    padding: .42rem .9rem;
    border-radius: 6px;
    border: 1px solid var(--border-strong);
    background: #fff;
    color: var(--text);
    cursor: pointer;
    white-space: nowrap;
    text-decoration: none !important;
    min-height: 40px;
}
.btn:hover { background: var(--surface-2); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-600); }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(.95); background: var(--success); }
.btn-danger { color: var(--danger); border-color: #e9b4b0; }
.btn-danger:hover { background: var(--danger-50); }
.btn-sm { padding: .2rem .7rem; font-size: var(--fs-xs); min-height: 32px; }
.btn-link { border: 0; background: none; color: var(--primary); padding: 0 .2rem; }
.btn-icon { padding: .2rem .45rem; line-height: 1; min-width: 32px; }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-danger-solid { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger-solid:hover { background: #8f1f19; color: #fff; }
@media (pointer: coarse) { .btn, .btn-sm, .btn-icon, input:not([type=checkbox]):not([type=radio]), select { min-height: 44px; } }
form.inline { display: inline; }
.action-menu { position: relative; }
.action-menu > summary { list-style: none; }
.action-menu > summary::-webkit-details-marker { display: none; }
.action-menu-list { position: absolute; inset-inline-end: 0; top: calc(100% + 4px); z-index: 35; display: grid; min-width: 210px; padding: 4px; background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius); box-shadow: 0 12px 28px rgba(16,24,40,.16); }
.action-menu-list a, .action-menu-list button { display: block; width: 100%; padding: .5rem .7rem; border: 0; border-radius: 5px; background: transparent; color: var(--text); font: inherit; text-align: right; cursor: pointer; white-space: nowrap; }
.action-menu-list a:hover, .action-menu-list button:hover { background: var(--primary-50); text-decoration: none; }
.action-menu-list .danger { color: var(--danger); }
.action-menu-list hr { width: 100%; margin: 4px 0; border: 0; border-top: 1px solid var(--border); }

/* ===== Tables ===== */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: .35rem .65rem; border-bottom: 1px solid var(--border); text-align: right; vertical-align: middle; }
.table th { background: var(--surface-2); font-weight: 600; font-size: var(--fs-sm); color: var(--text-2); white-space: nowrap; position: sticky; top: 0; }
.table tbody tr:hover { background: #fafcfe; }
.table td.num, .table th.num { text-align: left; direction: ltr; }
.table tfoot td { font-weight: 700; background: var(--surface-2); }
.table-sm th, .table-sm td { padding: .3rem .5rem; }
.table .row-void td { color: var(--text-2); }
.table .row-void td:first-child { text-decoration: line-through; }
.table td a { display: inline-block; padding-block: .15rem; min-width: 24px; }
.cell-trunc { display: block; max-width: 28rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lines-table td { padding: .3rem .35rem; }
.lines-table input, .lines-table select { padding: .3rem .4rem; }
/* حداقل عرض ستون‌ها تا مبالغ بزرگ کامل دیده شوند؛ در عرض کم، جدول اسکرول افقی می‌خورد */
.lines-table td { padding: .3rem .2rem; }
.lines-table th { white-space: normal; line-height: 1.4; }
.lines-table input.num { min-width: 125px; }
.lines-table input[data-f="discount"] { min-width: 100px; }
.lines-table input[data-f="quantity"] { min-width: 68px; }
.lines-table input[data-f="tax_rate"] { min-width: 46px; }
.lines-table input[data-combo] { min-width: 200px; }
.lines-table select { min-width: 190px; }
.lines-table td.num { white-space: nowrap; }
.lines-table .col-idx { width: 36px; text-align: center; color: var(--text-3); }
.lines-table .col-act { width: 36px; }
.empty { padding: 2rem; text-align: center; color: var(--text-3); }
.tree .lvl-1 td:first-child { font-weight: 700; }
.tree .lvl-2 td:first-child { padding-inline-start: 1.6rem; font-weight: 600; }
.tree .lvl-3 td:first-child { padding-inline-start: 3rem; }
.tree .lvl-1 { background: #f2f6fa; }

/* ===== Badges & Alerts ===== */
.badge {
    display: inline-block; padding: .05rem .5rem; border-radius: 999px;
    font-size: var(--fs-xs); font-weight: 600; white-space: nowrap;
    background: #eef1f5; color: var(--text-2);
}
.badge-success { background: var(--success-50); color: var(--success); }
.badge-info { background: var(--info-50); color: var(--info); }
.badge-danger { background: var(--danger-50); color: var(--danger); }
.badge-warning { background: var(--warning-50); color: var(--warning); }
.badge-muted { background: #eef1f5; color: var(--text-2); }
.badge-void { background: transparent; color: var(--text-2); border: 1px dashed var(--border-strong); }
.alerts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr)); gap: .65rem; margin-bottom: 1rem; }
.alert-card { display: flex; align-items: center; gap: .65rem; min-height: 64px; padding: .75rem; border: 1px solid var(--border); border-inline-start: 3px solid var(--info); border-radius: var(--radius); background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
.alert-card:hover { background: var(--surface-2); text-decoration: none; }
.alert-card .count { font-size: var(--fs-xl); font-weight: 700; min-width: 2.5rem; text-align: center; }
.alert-card .cta { margin-inline-start: auto; color: var(--primary); font-size: var(--fs-xs); white-space: nowrap; }
.alert-card.tone-danger { border-inline-start-color: var(--danger); }
.alert-card.tone-warning { border-inline-start-color: var(--warning); }
.empty-ok { padding: .8rem 1rem; border-color: #b9e1cc; background: var(--success-50); color: #145a39; }
.alert { padding: .7rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; border: 1px solid; }
.alert ul { margin: .3rem 0 0; padding-inline-start: 1.2rem; }
.alert-success { background: var(--success-50); border-color: #b9e1cc; color: #145a39; }
.alert-danger { background: var(--danger-50); border-color: #f1c0bb; color: #8a1d16; }
.alert-warning { background: var(--warning-50); border-color: #f3d79b; color: #6d4600; }
.alert-info { background: var(--info-50); border-color: #bfd5ef; color: #1c4c80; }
.feedback { position: relative; padding-inline-end: 3rem; }
.feedback-close { display: inline-grid; place-items: center; min-width: 32px; min-height: 32px; margin-inline-start: .4rem; border: 0; border-radius: 4px; background: transparent; color: inherit; font: inherit; font-size: var(--fs-xl); cursor: pointer; }
.feedback > .feedback-close { position: absolute; inset-inline-end: .45rem; top: .45rem; }
.feedback-close:hover { background: rgba(16,24,40,.08); }
.toast { position: fixed; inset-inline-start: 1rem; top: 4.5rem; z-index: 60; display: flex; align-items: center; gap: .75rem; max-width: min(480px, calc(100vw - 2rem)); padding: .6rem .75rem; border-radius: var(--radius); background: var(--sidebar); color: #fff; box-shadow: 0 10px 30px rgba(16,24,40,.25); }

/* ===== Totals & description lists ===== */
.totals { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .5rem; }
.totals .t { background: var(--surface-2); border: 1px solid var(--border); border-radius: 6px; padding: .45rem .7rem; }
.totals .t span { display: block; font-size: var(--fs-xs); color: var(--text-2); }
.totals .t b { font-size: var(--fs-lg); }
.totals .t.ok { border-color: #b9e1cc; background: var(--success-50); }
.totals .t.bad { border-color: #f1c0bb; background: var(--danger-50); }
.dl { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .6rem 1.2rem; }
.dl > div span { display: block; font-size: var(--fs-xs); color: var(--text-3); }
.dl > div b { font-weight: 600; }
.links-panel { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: .6rem; }
.link-box { border: 1px solid var(--border); border-radius: 6px; padding: .6rem .8rem; background: var(--surface-2); }
.link-box .title { font-size: var(--fs-xs); color: var(--text-2); }
.link-box .row { display: flex; align-items: center; gap: .4rem; flex-wrap: wrap; margin-top: .25rem; }

/* ===== Filters ===== */
.filters { display: flex; gap: .5rem; flex-wrap: wrap; align-items: flex-end; padding: .75rem 1rem; border-bottom: 1px solid var(--border); }
.filters .field { min-width: 130px; }
.filters .field label { margin-bottom: .1rem; }
.tabs { display: flex; gap: .25rem; border-bottom: 1px solid var(--border); padding: 0 1rem; }
.tabs a { padding: .55rem .9rem; color: var(--text-2); border-bottom: 2px solid transparent; font-weight: 600; font-size: var(--fs-sm); }
.tabs a.active { color: var(--primary); border-bottom-color: var(--primary); }
.tabs a:hover { text-decoration: none; color: var(--text); }

/* ===== Pagination ===== */
.pagination { display: flex; gap: .25rem; padding: .75rem 1rem; flex-wrap: wrap; align-items: center; }
.pagination a, .pagination span { padding: .2rem .6rem; border: 1px solid var(--border); border-radius: 5px; font-size: var(--fs-sm); background: #fff; }
.pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .disabled { color: var(--text-3); }
.cb-list { position: fixed; z-index: 1000; max-height: 280px; overflow: auto; margin: 0; padding: 4px; list-style: none; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 6px; box-shadow: 0 10px 24px rgba(16,24,40,.16); }
.cb-list[hidden] { display: none; }
.cb-list li { display: flex; justify-content: space-between; gap: .6rem; padding: .45rem .6rem; border-radius: 4px; cursor: pointer; }
.cb-list li small { color: var(--text-2); white-space: nowrap; }
.cb-list li[aria-selected="true"], .cb-list li:hover { background: var(--primary-50); }
.cb-list .cb-empty { color: var(--text-2); cursor: default; }
.dialog { border: 0; border-radius: 12px; padding: 1.25rem; width: min(480px, calc(100vw - 32px)); max-height: calc(100dvh - 32px); overflow: auto; box-shadow: 0 24px 60px rgba(16,24,40,.25); }
.dialog::backdrop { background: rgba(16,24,40,.5); }
.dialog form { display: grid; gap: .8rem; }
.dialog p { margin: 0; }
.dialog .field { display: grid; gap: .4rem; }
.dialog .field[hidden] { display: none; }
.dialog-actions { display: flex; gap: .5rem; justify-content: flex-end; }

/* ===== Jalali datepicker ===== */
.jdp {
    position: absolute; z-index: 1000; width: 260px;
    background: #fff; border: 1px solid var(--border-strong); border-radius: 8px;
    box-shadow: 0 10px 30px rgba(16,24,40,.15); padding: .5rem; font-size: var(--fs-sm);
}
.jdp-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: .3rem; font-weight: 700; }
.jdp-head button { border: 0; background: none; cursor: pointer; font-size: var(--fs-lg); padding: 0 .5rem; color: var(--primary); }
.jdp-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; text-align: center; }
.jdp-grid .dow { font-size: var(--fs-xs); color: var(--text-3); padding: .2rem 0; }
.jdp-grid button { border: 0; background: none; padding: .3rem 0; border-radius: 5px; cursor: pointer; font: inherit; }
.jdp-grid button:hover { background: var(--primary-50); }
.jdp-grid button.sel { background: var(--primary); color: #fff; }
.jdp-grid button.today { outline: 1px solid var(--primary); }
.jdp-foot { display: flex; justify-content: space-between; margin-top: .4rem; }
.jdp-foot button { font-size: var(--fs-xs); }

/* ===== Login ===== */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 1rem; background: linear-gradient(160deg, #16212f 0%, #1f5f8b 100%); }
.login-card { width: 100%; max-width: 380px; background: #fff; border-radius: 12px; padding: 1.8rem; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.login-card .brand-mark { width: 44px; height: 44px; font-size: var(--fs-xl); color: #fff; margin-bottom: .6rem; }
.login-card .field { margin-bottom: .9rem; }

/* ===== Print ===== */
.print-page { background: #fff; max-width: 210mm; margin: 0 auto; padding: 12mm; }
.print-only { display: none; }
@media print {
    body { background: #fff; font-size: var(--fs-xs); }
    .sidebar, .topbar, .no-print, .page-head .actions, .form-actions { display: none !important; }
    .content { padding: 0; max-width: none; }
    .card { box-shadow: none; border: 0; }
    .print-only { display: block; }
    .print-page { padding: 0; }
    a { color: inherit; }
}

/* ===== Responsive ===== */
@media (max-width: 1100px) {
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .dl { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
    .sidebar { position: fixed; width: min(280px, 85vw); right: -100%; z-index: 50; transition: right .2s; }
    body.nav-open .sidebar { right: 0; }
    body.nav-open { overflow: hidden; }
    .nav-backdrop:not([hidden]) { display: block; position: fixed; inset: 0; z-index: 45; background: rgba(16,24,40,.5); }
    .nav-close { display: block; margin: .5rem; margin-inline-start: auto; min-width: 44px; min-height: 44px; color: #fff; background: transparent; border: 0; font: inherit; cursor: pointer; }
    .btn.menu-toggle { display: inline-flex; }
    .topbar { flex-wrap: wrap; gap: .4rem .6rem; padding-inline: .75rem; }
    .topbar .small.muted { display: none; }
    .topbar .spacer { display: none; }
    .topbar form.gap { flex: 1 1 100%; order: 3; }
    .topbar form.gap select { width: 100%; min-width: 0; }
    .topbar > a { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .content { padding: .8rem; }
    .toast { top: 6rem; }
}
@media (max-width: 560px) {
    .grid-4, .form-grid, .dl { grid-template-columns: 1fr; }
    .form-grid .span-2, .form-grid .span-3 { grid-column: auto; }
    input:not([type=checkbox]):not([type=radio]), select, textarea { font-size: var(--fs-lg); }
    .lines-table, .lines-table tbody { display: block; width: 100%; }
    .lines-table thead { display: none; }
    .lines-table tbody tr { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .5rem .75rem; position: relative; margin: .6rem; padding: .7rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
    .lines-table td { display: grid; gap: .15rem; min-width: 0; padding: 0; border: 0; }
    .lines-table td[data-label]::before { content: attr(data-label); color: var(--text-2); font-size: var(--fs-sm); direction: rtl; text-align: right; }
    .lines-table td.cell-main { grid-column: 1 / -1; }
    .lines-table td.col-idx { position: absolute; inset-inline-end: .7rem; top: .55rem; color: var(--text-2); }
    .lines-table td.cell-main:first-of-type { padding-inline-end: 1.5rem; }
    .lines-table td.col-act { grid-column: 1 / -1; display: flex; justify-content: flex-end; }
    .lines-table input, .lines-table input.num, .lines-table input[data-combo], .lines-table select { width: 100%; min-width: 0; font-size: var(--fs-lg); }
    .sticky-bar { padding: .5rem; }
    .sticky-bar .totals { flex-basis: 100%; grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .sticky-bar .totals .t { padding: .3rem; }
    .sticky-bar .totals .t span { font-size: var(--fs-xs); }
    .sticky-bar .trade-totals { grid-template-columns: 1fr; }
    .sticky-bar .trade-totals .t:not(.ok) { display: none; }
    .sticky-bar .form-actions { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { .sidebar, .nav-group > summary::after { transition: none; } }

/* راهنمای کاربر؛ متن خواندنی و فهرست در همه عرض‌ها */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.help-guide { max-width: 1000px; margin-inline: auto; }
.help-guide .card { scroll-margin-top: 6rem; }
.help-guide p, .help-guide li { line-height: 1.95; }
.help-guide li + li { margin-top: .5rem; }
.help-guide h2 { font-size: 1.2rem; margin: 0 0 1rem; }
.help-guide table { width: 100%; }
.help-guide td { white-space: normal; vertical-align: top; min-width: 10rem; }
.help-guide ol { padding-inline-start: 1.5rem; }
.help-toc { display: flex; flex-wrap: wrap; gap: .5rem 1rem; margin: 1.25rem 0; padding-block: 1rem; border-block: 1px solid var(--border); }
.help-toc a { padding-block: .35rem; }
.help-guide kbd { direction: ltr; unicode-bidi: isolate; display: inline-block; padding-inline: .25rem; background: var(--bg); border: 1px solid var(--border); border-radius: .25rem; }
@media print { .help-guide .card { break-inside: auto; } .help-guide h2 { break-after: avoid; } }