/*
 * Self-contained RTL admin theme for the deferred-payment accounting system.
 * Hand-authored (no build step) because the environment has no Node/Vite.
 * Provides Tailwind-like utilities plus semantic components. Fully responsive.
 */

:root {
    --brand-primary: #F97316;
    --brand-primary-hover: #EA580C;
    --brand-primary-dark: #C2410C;
    --brand-primary-soft: #FFF7ED;
    --brand-primary-border: #FDBA74;
    --primary: var(--brand-primary);
    --primary-dark: var(--brand-primary-dark);
    --primary-light: var(--brand-primary-soft);
    --bg: #f1f5f9;
    --surface: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --border: #e2e8f0;
    --green: #16a34a;
    --green-bg: #dcfce7;
    --amber: #d97706;
    --amber-bg: #fef3c7;
    --red: #dc2626;
    --red-bg: #fee2e2;
    --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .04);
    --shadow-lg: 0 10px 25px rgba(15, 23, 42, .10);
    --radius: 12px;
    --sidebar-w: 256px;
}

* { box-sizing: border-box; }

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

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, 'Cairo', 'Noto Sans Arabic', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 15px;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0 0 .5rem; font-weight: 700; line-height: 1.3; }

/* ---------- Layout ---------- */
.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-w);
    background: #1e293b;
    color: #cbd5e1;
    position: fixed;
    inset-block: 0;
    inset-inline-start: 0;
    display: flex;
    flex-direction: column;
    z-index: 40;
    transition: transform .25s ease;
}
.sidebar__brand {
    padding: 1.25rem 1.25rem;
    font-size: 1.15rem;
    font-weight: 800;
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    display: flex; align-items: center; gap: .5rem;
}
.sidebar__brand span.logo {
    width: 34px; height: 34px; border-radius: 9px;
    background: var(--primary); display: grid; place-items: center; color: #fff;
}
.sidebar__brand .logo-image { object-fit: contain; background: transparent; }
.sidebar__nav { padding: .75rem; overflow-y: auto; flex: 1; }
.nav-link {
    display: flex; align-items: center; gap: .7rem;
    padding: .7rem .85rem; border-radius: 10px;
    color: #cbd5e1; font-weight: 600; margin-bottom: .15rem;
    transition: background .15s, color .15s;
}
.nav-link:hover { background: rgba(255, 255, 255, .06); color: #fff; }
.nav-link.active { background: var(--primary); color: #fff; }
.nav-link .ic { width: 20px; text-align: center; flex: none; }

.main { flex: 1; margin-inline-start: var(--sidebar-w); min-width: 0; display: flex; flex-direction: column; }

.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: .75rem 1.25rem;
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; z-index: 30;
}
.topbar__title { font-size: 1.05rem; font-weight: 700; }
.topbar__user { display: flex; align-items: center; gap: .75rem; font-size: .9rem; color: var(--muted); }
.hamburger { display: none; background: none; border: 0; font-size: 1.4rem; cursor: pointer; color: var(--text); }

.content { padding: 1.5rem; flex: 1; }
.container-narrow { max-width: 720px; margin-inline: auto; }

/* ---------- Page header ---------- */
.page-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.page-header h1 { font-size: 1.4rem; margin: 0; }
.page-header .sub { color: var(--muted); font-size: .9rem; }

/* ---------- Cards ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 1.25rem; overflow: hidden; }
.card__header { padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); font-weight: 700; display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.card__body { padding: 1.25rem; }
.card__body.tight { padding: 0; }

/* ---------- KPI cards ---------- */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; margin-bottom: 1.25rem; }
.kpi {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 1.1rem 1.2rem; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.kpi::before { content: ""; position: absolute; inset-block: 0; inset-inline-start: 0; width: 4px; background: var(--primary); }
.kpi.green::before { background: var(--green); }
.kpi.amber::before { background: var(--amber); }
.kpi.red::before { background: var(--red); }
.kpi__label { color: var(--muted); font-size: .82rem; font-weight: 600; margin-bottom: .35rem; }
.kpi__value { font-size: 1.5rem; font-weight: 800; letter-spacing: -.5px; }
.kpi__value.sm { font-size: 1.25rem; }

/* ---------- Grids ---------- */
.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

/* ---------- Tables ---------- */
.table-wrap { width: 100%; overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.table th, .table td { padding: .7rem .85rem; text-align: start; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table th { background: #f8fafc; color: var(--muted); font-weight: 700; font-size: .8rem; }
.table tbody tr:hover { background: #f8fafc; }
.table td.num, .table th.num { text-align: end; font-variant-numeric: tabular-nums; }
.table .row-actions { display: flex; gap: .35rem; }

/* ---------- Badges ---------- */
.badge { display: inline-flex; align-items: center; gap: .3rem; padding: .2rem .6rem; border-radius: 999px; font-size: .78rem; font-weight: 700; }
.badge.green { background: var(--green-bg); color: var(--green); }
.badge.amber { background: var(--amber-bg); color: var(--amber); }
.badge.red { background: var(--red-bg); color: var(--red); }
.badge.gray { background: #e2e8f0; color: #475569; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: .4rem; padding: .55rem .95rem; border-radius: 10px; border: 1px solid transparent; font-weight: 700; font-size: .9rem; cursor: pointer; transition: background .15s, box-shadow .15s, opacity .15s; background: #e2e8f0; color: #1e293b; }
.btn:hover { opacity: .92; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); opacity: 1; }
.btn-success { background: var(--green); color: #fff; }
.btn-danger { background: var(--red); color: #fff; }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text); }
.btn-sm { padding: .35rem .6rem; font-size: .82rem; border-radius: 8px; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon { padding: .4rem .55rem; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: 1.1rem; }
.form-label { display: block; font-weight: 700; font-size: .88rem; margin-bottom: .4rem; }
.form-label .req { color: var(--red); }
.form-input, .form-select, textarea.form-input {
    width: 100%; padding: .6rem .75rem; border: 1px solid var(--border); border-radius: 10px;
    font: inherit; background: #fff; color: var(--text); transition: border-color .15s, box-shadow .15s;
}
.form-input:focus, .form-select:focus, textarea.form-input:focus {
    outline: none; border-color: var(--brand-primary); box-shadow: 0 0 0 3px rgba(249, 115, 22, .18);
}
.form-input.is-invalid, .form-select.is-invalid { border-color: var(--red); }
.form-error { color: var(--red); font-size: .8rem; margin-top: .3rem; font-weight: 600; }
.form-hint { color: var(--muted); font-size: .8rem; margin-top: .3rem; }
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.form-row-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.form-actions { display: flex; gap: .6rem; margin-top: 1rem; flex-wrap: wrap; }
.checkbox { display: inline-flex; align-items: center; gap: .5rem; font-weight: 600; cursor: pointer; }
.checkbox input { width: 18px; height: 18px; accent-color: var(--primary); }

/* ---------- Alerts ---------- */
.alert { padding: .85rem 1.1rem; border-radius: 10px; margin-bottom: 1.25rem; font-weight: 600; border: 1px solid transparent; display: flex; align-items: center; gap: .5rem; }
.alert-success { background: var(--green-bg); color: #166534; border-color: #bbf7d0; }
.alert-error { background: var(--red-bg); color: #991b1b; border-color: #fecaca; }
.alert-warning { background: var(--amber-bg); color: #92400e; border-color: #fde68a; }
.alert-info { background: var(--primary-light); color: var(--primary-dark); border-color: #c7d2fe; }

/* ---------- Filters bar ---------- */
.filters { display: flex; flex-wrap: wrap; gap: .75rem; align-items: end; }
.filters .form-group { margin: 0; }
.filters .form-input, .filters .form-select { min-width: 150px; }

/* ---------- Misc utilities ---------- */
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: .5rem; } .gap-2 { gap: 1rem; }
.wrap { flex-wrap: wrap; }
.text-muted { color: var(--muted); }
.text-sm { font-size: .85rem; } .text-lg { font-size: 1.1rem; }
.text-center { text-align: center; } .text-end { text-align: end; }
.fw-bold { font-weight: 700; }
.num { font-variant-numeric: tabular-nums; }
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; }
.mb-0 { margin-bottom: 0; } .mb-1 { margin-bottom: .5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; }
.text-green { color: var(--green); } .text-red { color: var(--red); } .text-amber { color: var(--amber); }
.divide > * + * { border-top: 1px solid var(--border); }
.chart-box { position: relative; height: 280px; }

/* ---------- Empty state ---------- */
.empty { text-align: center; padding: 3rem 1rem; color: var(--muted); }
.empty .icon { font-size: 2.5rem; margin-bottom: .5rem; }

/* ---------- Definition list ---------- */
.dl { display: grid; grid-template-columns: 1fr 1fr; gap: .1rem; }
.dl .item { padding: .7rem .25rem; border-bottom: 1px solid var(--border); }
.dl .item .k { color: var(--muted); font-size: .8rem; }
.dl .item .v { font-weight: 700; }

/* ---------- Pagination ---------- */
.pagination { display: flex; gap: .3rem; flex-wrap: wrap; list-style: none; padding: 1rem 1.25rem; margin: 0; justify-content: center; }
.pagination a, .pagination span { padding: .4rem .7rem; border-radius: 8px; border: 1px solid var(--border); font-size: .85rem; background: #fff; }
.pagination .active span { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .disabled span { color: #cbd5e1; }

/* ---------- Login ---------- */
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; background: linear-gradient(135deg, var(--brand-primary), #1e293b); }
.auth-card { background: #fff; border-radius: 16px; box-shadow: var(--shadow-lg); width: 100%; max-width: 400px; padding: 2rem; }
.auth-card h1 { text-align: center; font-size: 1.4rem; }
.auth-card .brand-logo { width: 54px; height: 54px; border-radius: 14px; background: var(--primary); color: #fff; display: grid; place-items: center; margin: 0 auto 1rem; font-size: 1.5rem; }

/* ---------- Responsive ---------- */
.backdrop { display: none; }
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .sidebar { transform: translateX(100%); }
    .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-lg); }
    .main { margin-inline-start: 0; }
    .hamburger { display: block; }
    .backdrop.show { display: block; position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 35; }
    .grid-2, .grid-3, .grid-4, .form-row, .form-row-3 { grid-template-columns: 1fr; }
    .dl { grid-template-columns: 1fr; }
    .content { padding: 1rem; }
}

/* ---------- Print (statement) ---------- */
@media print {
    .sidebar, .topbar, .no-print, .btn, .filters { display: none !important; }
    .main { margin: 0; }
    .content { padding: 0; }
    .card { box-shadow: none; border: 1px solid #ccc; }
    body { background: #fff; }
}