:root {
    --primary: #4f46e5;
    --primary-soft: #eef2ff;
    --success: #16a34a;
    --danger: #dc2626;

    --sidebar: #0f172a;
    --sidebar-hover: #1e293b;
    --sidebar-active: #4f46e5;

    --bg: #f8fafc;
    --surface: #ffffff;
    --border: #e2e8f0;
    --text: #0f172a;
    --text-muted: #64748b;
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --primary: #818cf8;
    --primary-soft: #252d4d;
    --success: #4ade80;
    --danger: #f87171;

    --sidebar: #080d19;
    --sidebar-hover: #192337;
    --sidebar-active: #4f46e5;

    --bg: #0b1120;
    --surface: #151e2e;
    --border: #2a3649;
    --text: #e5eaf2;
    --text-muted: #9aa8bc;

    --bs-body-bg: var(--bg);
    --bs-body-color: var(--text);
    --bs-border-color: var(--border);
    --bs-secondary-color: var(--text-muted);
    --bs-tertiary-bg: #1c2739;
    --bs-emphasis-color: #f3f6fb;
    --bs-link-color: #a5b4fc;
    --bs-link-hover-color: #c7d2fe;
    --bs-table-color: var(--text);
    --bs-table-bg: var(--surface);
    --bs-table-border-color: var(--border);
    --bs-table-striped-color: var(--text);
    --bs-table-striped-bg: #192436;
    --bs-table-hover-color: var(--text);
    --bs-table-hover-bg: #202c40;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: "Inter", "Cairo", "Segoe UI", system-ui, sans-serif;
    margin: 0;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    width: 260px;
    height: 100vh;
    background: var(--sidebar);
    color: #fff;
}

html[dir="rtl"] .sidebar { right: 0; }
html[dir="ltr"] .sidebar { left: 0; }

.logo {
    padding: 24px;
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    letter-spacing: 1px;
    border-bottom: 1px solid #1e293b;
}

.menu { padding: 16px; }

.menu a {
    color: #cbd5e1;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    margin-bottom: 4px;
    border-radius: 10px;
    font-size: 15px;
    transition: background .15s, color .15s;
}

.menu a:hover {
    background: var(--sidebar-hover);
    color: #fff;
}

.menu a.active {
    background: var(--sidebar-active);
    color: #fff;
}

.menu-section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px 8px;
    margin-top: 8px;
    color: #fff;
    font-size: 15px;
    font-weight: 700;
}

.menu-dropdown > summary {
    cursor: pointer;
    list-style: none;
}

.menu-dropdown > summary::-webkit-details-marker {
    display: none;
}

.menu-dropdown > summary::after {
    content: "\F282";
    font-family: "bootstrap-icons";
    font-size: 12px;
    margin-inline-start: auto;
    transition: transform .15s ease;
}

.menu-dropdown[open] > summary::after {
    transform: rotate(180deg);
}

.menu-subitems {
    margin-inline-start: 14px;
    padding-inline-start: 8px;
    border-inline-start: 1px solid #334155;
}

.menu-subitems a {
    padding: 10px 12px;
    font-size: 14px;
}

/* Layout */
html[dir="rtl"] .content { margin-right: 260px; }
html[dir="ltr"] .content { margin-left: 260px; }

.topbar {
    background: var(--surface);
    height: 64px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
}

.page { padding: 28px; }

html[data-theme="dark"] body {
    background: var(--bg);
    color: var(--text);
}

html[data-theme="dark"] .topbar,
html[data-theme="dark"] .erp-card,
html[data-theme="dark"] .card,
html[data-theme="dark"] .list-group-item,
html[data-theme="dark"] .dropdown-menu,
html[data-theme="dark"] .modal-content,
html[data-theme="dark"] .popover,
html[data-theme="dark"] .offcanvas {
    border-color: var(--border);
    background-color: var(--surface);
    color: var(--text);
}

html[data-theme="dark"] .topbar {
    border-bottom-color: var(--border);
}

html[data-theme="dark"] .table {
    --bs-table-color: var(--text);
    --bs-table-bg: var(--surface);
    --bs-table-border-color: var(--border);
    --bs-table-striped-color: var(--text);
    --bs-table-striped-bg: #192436;
    --bs-table-hover-color: var(--text);
    --bs-table-hover-bg: #202c40;
}

html[data-theme="dark"] .table-light,
html[data-theme="dark"] .table-light > th,
html[data-theme="dark"] .table-light > td,
html[data-theme="dark"] .table-light th,
html[data-theme="dark"] .table-light td {
    --bs-table-color: var(--text);
    --bs-table-bg: #1c2739;
    --bs-table-border-color: var(--border);
}

html[data-theme="dark"] .form-control,
html[data-theme="dark"] .form-select,
html[data-theme="dark"] .input-group-text,
html[data-theme="dark"] .form-control:focus,
html[data-theme="dark"] .form-select:focus {
    border-color: var(--border);
    background-color: #101827;
    color: var(--text);
}

html[data-theme="dark"] .form-control::placeholder {
    color: #8290a5;
}

html[data-theme="dark"] .form-control:disabled,
html[data-theme="dark"] .form-control[readonly],
html[data-theme="dark"] .form-select:disabled {
    background-color: #202a3a;
}

html[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

html[data-theme="dark"] .bg-light,
html[data-theme="dark"] .bg-white {
    background-color: var(--surface) !important;
    color: var(--text);
}

html[data-theme="dark"] .border,
html[data-theme="dark"] hr {
    border-color: var(--border) !important;
}

html[data-theme="dark"] .btn-light,
html[data-theme="dark"] .btn-outline-secondary {
    --bs-btn-color: var(--text);
    --bs-btn-bg: #202b3c;
    --bs-btn-border-color: #3b485b;
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: #303d52;
    --bs-btn-hover-border-color: #53627a;
}

html[data-theme="dark"] .alert-light {
    border-color: var(--border);
    background-color: #202b3c;
    color: var(--text);
}

html[data-theme="dark"] .sidebar {
    background: var(--sidebar);
}

/* Cards */
.erp-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 1px 3px rgba(15, 23, 42, .06);
    transition: box-shadow .2s, transform .2s;
}

.erp-card:hover {
    box-shadow: 0 8px 24px rgba(15, 23, 42, .08);
    transform: translateY(-2px);
}

@media (max-width: 700px) {
    .sidebar {
        position: static;
        width: 100%;
        height: auto;
    }

    .logo {
        padding: 12px 16px;
        font-size: 19px;
        text-align: start;
    }

    .menu {
        display: flex;
        gap: 4px;
        overflow-x: auto;
        padding: 8px;
    }

    .menu a {
        flex: 0 0 auto;
        gap: 8px;
        margin: 0;
        padding: 9px 11px;
        font-size: 13px;
        white-space: nowrap;
    }

    html[dir="rtl"] .content,
    html[dir="ltr"] .content {
        margin: 0;
    }

    .topbar {
        height: 56px;
        padding: 0 16px;
    }

    .page {
        padding: 16px;
    }
}