/* =====================================================================
   SIKDER TELECOM ERP - Stylesheet
   Design language: clean blue corporate theme, left sidebar navigation,
   card-based dashboard, data tables with export buttons.
   ===================================================================== */

:root {
    --primary: #0061f2;
    --primary-dark: #0047b3;
    --primary-light: #e7f0ff;
    --sidebar-bg: #1e293b;
    --sidebar-hover: #334155;
    --sidebar-active: #0061f2;
    --header-bg: #ffffff;
    --body-bg: #f1f5f9;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --success: #16a34a;
    --success-bg: #dcfce7;
    --warning: #d97706;
    --warning-bg: #fef3c7;
    --danger: #dc2626;
    --danger-bg: #fee2e2;
    --info: #0891b2;
    --white: #ffffff;
    --white-rgb: 255, 255, 255;
    --card-bg: #ffffff;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --shadow-lg: 0 10px 25px rgba(0,0,0,.1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--body-bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===================== LOGIN PAGE ===================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #4a6cf7 0%, #0061f2 50%, #0047b3 100%);
    padding: 20px;
    position: relative;
}
.login-page::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,.08) 0%, transparent 50%);
}
.login-topbar {
    position: absolute;
    top: 0; left: 0; right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    z-index: 2;
}
.login-logo {
    color: #fff;
    font-weight: 700;
    font-size: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.login-logo .logo-icon {
    width: 36px; height: 36px;
    background: rgba(255,255,255,.2);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
}
.lang-switch a { color: #fff; margin: 0 6px; font-size: 13px; opacity: .85; }
.lang-switch a.active { opacity: 1; font-weight: 600; border-bottom: 2px solid #fff; }

.login-card {
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,.25);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 2;
}
.login-card h1 { font-size: 26px; font-weight: 700; margin-bottom: 4px; }
.login-card .subtitle { color: var(--text-muted); margin-bottom: 28px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 13px; }
.form-group .label-row { display: flex; justify-content: space-between; align-items: center; }
.form-control {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color .15s, box-shadow .15s;
    background: var(--white);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,97,242,.12);
}
.input-group { position: relative; }
.input-group .input-icon {
    position: absolute;
    right: 12px; top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    cursor: pointer;
    background: none; border: none;
    font-size: 16px;
}
.form-check { display: flex; align-items: center; gap: 8px; margin-bottom: 20px; }
.form-check input { width: 16px; height: 16px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all .15s;
    text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); text-decoration: none; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #15803d; text-decoration: none; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; text-decoration: none; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-secondary { background: #e2e8f0; color: var(--text); }
.btn-secondary:hover { background: #cbd5e1; text-decoration: none; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-block { width: 100%; }
.btn-lg { padding: 13px 24px; font-size: 15px; }

/* ===================== APP LAYOUT ===================== */
.app-wrapper { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    color: #cbd5e1;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    scrollbar-width: auto;
    scrollbar-color: rgba(148,163,184,.65) transparent;
    z-index: 100;
    transition: width .2s;
}
.sidebar::-webkit-scrollbar { width: 8px; }
.sidebar::-webkit-scrollbar-track { background: rgba(255,255,255,.04); }
.sidebar::-webkit-scrollbar-thumb { background: rgba(148,163,184,.65); border-radius: 8px; }
.sidebar::-webkit-scrollbar-thumb:hover { background: rgba(203,213,225,.9); }
.sidebar .sidebar-menu { padding-bottom: 28px; }
.sidebar.collapsed { width: 64px; }
.sidebar.collapsed .menu-text,
.sidebar.collapsed .submenu,
.sidebar.collapsed .sidebar-brand span { display: none; }

.sidebar-brand {
    padding: 18px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-weight: 700;
    font-size: 17px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-brand .brand-icon {
    width: 34px; height: 34px;
    background: var(--primary);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}
.sidebar-menu { padding: 10px 0; list-style: none; }
.sidebar-menu > li { position: relative; }
.menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 20px;
    color: #cbd5e1;
    font-size: 14px;
    cursor: pointer;
    border-left: 3px solid transparent;
    transition: all .15s;
}
.menu-link:hover { background: var(--sidebar-hover); color: #fff; text-decoration: none; }
.menu-link.active { background: var(--sidebar-active); color: #fff; border-left-color: #fff; }
.menu-icon { width: 20px; text-align: center; flex-shrink: 0; font-size: 16px; }
.menu-arrow { margin-left: auto; font-size: 11px; transition: transform .15s; }
.menu-link.open .menu-arrow { transform: rotate(90deg); }
.submenu { list-style: none; background: rgba(0,0,0,.2); max-height: 0; overflow: hidden; transition: max-height .25s; }
.submenu.open { max-height: 600px; }
.submenu .menu-link { padding-left: 52px; font-size: 13px; }
.submenu .menu-link.active { background: var(--sidebar-active); }
/* Reports has many entries: keep the submenu independently scrollable so no report is clipped. */
.reports-submenu.open {
    /* Reserve room for the rest of the fixed sidebar so Reports never pushes
       Audit Log/User Activity/Notes/Settings out of view. */
    max-height: min(62vh, calc(100vh - 280px));
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
    scrollbar-width: auto;
    scrollbar-color: rgba(148,163,184,.8) transparent;
}
.reports-submenu::-webkit-scrollbar { width: 8px; }
.reports-submenu::-webkit-scrollbar-track { background: rgba(255,255,255,.04); }
.reports-submenu::-webkit-scrollbar-thumb { background: rgba(148,163,184,.75); border-radius: 8px; }
.reports-submenu .menu-link {
    min-height: 38px;
    white-space: normal;
    line-height: 1.35;
    padding-top: 9px;
    padding-bottom: 9px;
}
@media (max-width: 768px) {
    .reports-submenu.open { max-height: min(48vh, calc(100vh - 260px)); }
    .reports-submenu .menu-link { padding-left: 48px; min-height: 42px; }
}

/* Chrome/Android Chrome voice controls */
.voice-input-wrap { display:block; position:relative; width:100%; }
.voice-input-wrap > input, .voice-input-wrap > textarea { padding-right:92px !important; }
.voice-mic-btn { position:absolute; right:8px; top:50%; transform:translateY(-50%); width:32px; height:32px; border:0; border-radius:6px; background:var(--primary); color:#fff; cursor:pointer; z-index:3; }
.voice-input-wrap > textarea ~ .voice-mic-btn { top:12px; transform:none; }
.voice-mic-btn:hover { background:var(--primary-dark); }
.voice-mic-btn.is-listening { background:var(--danger); animation:voicePulse 1.2s infinite; }
.voice-mic-btn:disabled { background:#94a3b8; cursor:not-allowed; animation:none; }
.voice-lang-select { position:absolute; right:44px; top:50%; transform:translateY(-50%); height:28px; max-width:43px; border:1px solid var(--border); border-radius:4px; background:var(--white); color:var(--text); font-size:10px; z-index:3; }
.voice-input-wrap > textarea ~ .voice-lang-select { top:12px; transform:none; }
@keyframes voicePulse { 50% { box-shadow:0 0 0 5px rgba(220,38,38,.2); } }
@media (max-width:768px) {
    .voice-mic-btn { width:36px; height:36px; }
    .voice-lang-select { height:30px; max-width:45px; }
}

/* Main content */
.main-content {
    flex: 1;
    margin-left: 260px;
    transition: margin-left .2s;
    min-width: 0;
}
.sidebar.collapsed ~ .main-content { margin-left: 64px; }

/* Top header */
.top-header {
    background: var(--header-bg);
    height: 60px;
    display: flex;
    align-items: center;
    padding: 0 20px;
    box-shadow: var(--shadow);
    position: sticky; top: 0; z-index: 50;
    gap: 16px;
}
.top-header .hamburger { font-size: 20px; cursor: pointer; color: var(--text); background: none; border: none; }
.top-header .header-brand {
    display: flex; align-items: center; gap: 8px;
    font-weight: 700; color: var(--primary);
}
.top-header .status-dot { width: 8px; height: 8px; background: var(--success); border-radius: 50%; }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.header-icon-btn {
    background: none; border: none; font-size: 18px; color: var(--text-muted);
    cursor: pointer; position: relative;
}
.header-icon-btn:hover { color: var(--primary); }
.badge-count {
    position: absolute; top: -4px; right: -6px;
    background: var(--danger); color: #fff;
    font-size: 10px; font-weight: 700;
    border-radius: 10px; padding: 1px 5px;
}
.header-date { color: var(--text-muted); font-size: 13px; }
.user-menu { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.user-avatar {
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--primary); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 14px;
}
.user-name { font-weight: 600; font-size: 13px; }
.user-dropdown {
    position: absolute; right: 0; top: 110%;
    background: var(--white); border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px; box-shadow: var(--shadow-lg);
    min-width: 180px; padding: 6px;
    display: none; z-index: 200;
}
.user-dropdown.open { display: block; }
.user-dropdown a {
    display: flex; align-items: center; gap: 10px;
    padding: 9px 12px; color: var(--text); border-radius: 6px; font-size: 13px;
}
.user-dropdown a:hover { background: var(--primary-light); text-decoration: none; }

.content-body { padding: 24px; }

/* ===================== PAGE HEADINGS ===================== */
.page-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 20px; flex-wrap: wrap; gap: 12px;
}
.page-title { font-size: 22px; font-weight: 700; }
.page-title small { display: block; font-size: 13px; font-weight: 400; color: var(--text-muted); }
.page-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ===================== CARDS ===================== */
.card {
    background: var(--white); border-radius: var(--radius);
    color: var(--text);
    box-shadow: var(--shadow); margin-bottom: 20px;
    border: 1px solid var(--border);
}
.card-header {
    padding: 14px 20px; border-bottom: 1px solid var(--border);
    font-weight: 700; display: flex; justify-content: space-between; align-items: center;
    background: #fafbfc; border-radius: var(--radius) var(--radius) 0 0;
}
.card-header .alert-icon { color: var(--warning); margin-right: 6px; }
.card-body { padding: 20px; }
.card-footer { padding: 14px 20px; border-top: 1px solid var(--border); background: #fafbfc; }

/* ===================== DASHBOARD STAT CARDS ===================== */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 20px; }
.stat-card {
    background: var(--white); border-radius: var(--radius); padding: 18px;
    color: var(--text);
    box-shadow: var(--shadow); border: 1px solid var(--border);
    display: flex; align-items: center; gap: 14px;
}
.stat-card .stat-icon {
    width: 48px; height: 48px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; flex-shrink: 0;
}
.stat-icon.blue { background: #dbeafe; color: #2563eb; }
.stat-icon.green { background: #dcfce7; color: #16a34a; }
.stat-icon.orange { background: #fef3c7; color: #d97706; }
.stat-icon.red { background: #fee2e2; color: #dc2626; }
.stat-icon.purple { background: #f3e8ff; color: #9333ea; }
.stat-icon.cyan { background: #cffafe; color: #0891b2; }
.stat-card .stat-info { flex: 1; min-width: 0; }
.stat-card .stat-label { font-size: 12px; color: var(--text-muted); margin-bottom: 2px; }
.stat-card .stat-value { font-size: 19px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
/* ===================== GRID & ROWS ===================== */
.row { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 20px; }
.col { flex: 1; min-width: 0; }
.col-2 { flex: 2; }
.col-3 { flex: 3; }
.col-half { flex: 0 0 calc(50% - 10px); }
.col-third { flex: 0 0 calc(33.33% - 14px); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* ===================== TABLES ===================== */
.table-wrap { overflow-x: auto; }
table.data-table {
    width: 100%; border-collapse: collapse; font-size: 13px;
}
table.data-table th {
    background: #f8fafc; padding: 11px 14px; text-align: left;
    font-weight: 700; color: var(--text); border-bottom: 2px solid var(--border);
    white-space: nowrap;
}
table.data-table td { padding: 11px 14px; border-bottom: 1px solid var(--border); }
table.data-table tr:hover td { background: #f8fafc; }
table.data-table .actions { display: flex; gap: 6px; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* ===================== REPORT FILTERS & SORT ===================== */
.filter-bar {
    display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end;
    padding: 14px 18px; background: #f8fafc; border-radius: 8px 8px 0 0;
    border-bottom: 1px solid var(--border); margin-bottom: 0;
}
.filter-bar .form-group { margin: 0; min-width: 140px; }
.filter-bar .form-group label { font-size: 11px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: .3px; margin-bottom: 3px; display: block; }
.filter-bar .form-control { width: 100%; }
.filter-bar .filter-actions { display: flex; gap: 8px; align-items: flex-end; }
.filter-bar .btn { white-space: nowrap; }
.search-box { position: relative; }
.search-box .form-control { padding-left: 32px; }
.search-box .search-icon { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 13px; }
select.form-control { cursor: pointer; }

/* Sortable table headers */
table.data-table th.sortable { cursor: pointer; user-select: none; white-space: nowrap; }
table.data-table th.sortable:hover { background: #eef2ff; color: var(--primary); }
table.data-table th.sortable::after { content: " \f0dc"; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: 10px; opacity: .35; }
table.data-table th.sort-asc::after { content: " \f0d8"; opacity: 1; color: var(--primary); }
table.data-table th.sort-desc::after { content: " \f0d7"; opacity: 1; color: var(--primary); }
.text-right.sortable::after, th.text-right.sortable::after { }

.badge-status { display: inline-block; padding: 2px 9px; border-radius: 11px; font-size: 11px; font-weight: 700; text-transform: uppercase; }
.badge-cash { background: #dcfce7; color: #15803d; }
.badge-bank { background: #dbeafe; color: #1d4ed8; }
.badge-mobile { background: #fce7f3; color: #be185d; }
.badge-final { background: #dcfce7; color: #15803d; }
.badge-draft { background: #fef9c3; color: #a16207; }
.badge-received { background: #dcfce7; color: #15803d; }
.badge-pending { background: #fef9c3; color: #a16207; }
.badge-ordered { background: #dbeafe; color: #1d4ed8; }
.badge-low { background: #fef2f2; color: #b91c1c; font-weight: 700; }
.badge-ok { background: #dcfce7; color: #15803d; }

@page { size: A4 portrait; margin: 10mm; }
@media print {
    .sidebar, .top-header, .filter-bar, .page-actions .btn, .no-print, 
    .table-toolbar, .export-buttons, .report-export-toolbar, .mobile-menu-toggle, .theme-toggle,
    .sidebar-overlay, .btn { display: none !important; }
    .main-content { margin-left: 0 !important; padding: 0 !important; }
    .app-wrapper { display: block; }
    .content-body { padding: 0 !important; width: auto !important; min-width: 0 !important; }
    .main-content { width: auto !important; min-width: 0 !important; }
    body { background: #fff !important; color: #000 !important; font-size: 12px; }
    .card { box-shadow: none !important; border: 1px solid #ccc !important; page-break-inside: avoid; }
    .stat-grid, .stat-row { grid-template-columns: repeat(4, 1fr) !important; }
    .stat-card { box-shadow: none !important; border: 1px solid #ccc !important; }
    table.data-table { width: 100%; font-size: 11px; }
    table.data-table th { background: #f0f0f0 !important; -webkit-print-color-adjust: exact; }
    table.data-table th.sortable { cursor: default; }
    table.data-table th.sortable::after, table.data-table th.sort-asc::after, table.data-table th.sort-desc::after { content: ""; }
    .page-header { border: none; }
    .welcome-banner { background: #0061f2 !important; -webkit-print-color-adjust: exact; }
    a { color: #000 !important; text-decoration: none; }
}

/* Print-only invoice/receipt styles */
.print-invoice { display: none; }
@media print {
    .print-invoice { display: block !important; }
    .print-invoice { position: absolute; top: 0; left: 0; width: 100%; padding: 20px; }
}

/* ===================== INVOICE PRINT TEMPLATE ===================== */
.invoice-print-header { text-align: center; margin-bottom: 20px; border-bottom: 2px solid #000; padding-bottom: 15px; }
.invoice-print-header h2 { font-size: 22px; margin-bottom: 4px; }
.invoice-print-header p { font-size: 12px; color: #555; margin: 2px 0; }
.invoice-print-meta { display: flex; justify-content: space-between; margin-bottom: 15px; font-size: 13px; }
.invoice-print-meta div { line-height: 1.8; }
.invoice-print-meta strong { display: inline-block; min-width: 80px; }
.invoice-print-table { width: 100%; border-collapse: collapse; margin: 15px 0; }
.invoice-print-table th, .invoice-print-table td { border: 1px solid #ddd; padding: 8px 10px; font-size: 12px; text-align: left; }
.invoice-print-table th { background: #f5f5f5; font-weight: 700; }
.invoice-print-totals { width: 300px; margin-left: auto; margin-top: 10px; }
.invoice-print-totals table { width: 100%; border-collapse: collapse; }
.invoice-print-totals td { padding: 6px 12px; font-size: 13px; }
.invoice-print-totals .grand-total { font-size: 16px; font-weight: 700; border-top: 2px solid #000; padding-top: 8px; }
.invoice-print-footer { margin-top: 30px; display: flex; justify-content: space-between; font-size: 12px; }
.invoice-print-signature { border-top: 1px solid #999; padding-top: 5px; width: 200px; text-align: center; }

/* ===================== THERMAL PRINT (58mm/80mm) ===================== */
@media print and (max-width: 80mm) {
    .thermal-print { width: 58mm; padding: 5px; font-size: 10px; }
    .thermal-print h3 { font-size: 14px; text-align: center; }
    .thermal-print table { width: 100%; font-size: 9px; }
    .thermal-print td, .thermal-print th { padding: 2px; }
}
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.fw-bold { font-weight: 700; }
.no-data { text-align: center; padding: 30px; color: var(--text-muted); }

/* Table export toolbar */
.table-toolbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 20px; border-bottom: 1px solid var(--border); flex-wrap: wrap; gap: 10px;
    background: #fafbfc;
}
.export-buttons { display: flex; gap: 6px; flex-wrap: wrap; }
.export-buttons .btn { padding: 5px 11px; font-size: 12px; background: var(--white); border: 1px solid var(--border); color: var(--text); }
.export-buttons .btn:hover { background: var(--primary-light); border-color: var(--primary); text-decoration: none; }
.length-select { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.length-select select { padding: 5px 8px; border: 1px solid var(--border); border-radius: 6px; }

/* Pagination */
.pagination { display: flex; gap: 4px; padding: 12px 20px; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.pagination-info { color: var(--text-muted); font-size: 12px; }
.pagination-links { display: flex; gap: 4px; }
.pagination-links a, .pagination-links span {
    padding: 6px 11px; border: 1px solid var(--border); border-radius: 6px;
    font-size: 13px; color: var(--text);
}
.pagination-links a:hover { background: var(--primary-light); text-decoration: none; }
.pagination-links .active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===================== BADGES & STATUS ===================== */
.badge {
    display: inline-block; padding: 3px 10px; border-radius: 20px;
    font-size: 11px; font-weight: 700;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-info { background: var(--primary-light); color: var(--primary); }
.badge-secondary { background: #e2e8f0; color: var(--text-muted); }

/* ===================== ALERTS / FLASH ===================== */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; display: flex; gap: 10px; align-items: center; }
.alert-success { background: var(--success-bg); color: #15803d; border: 1px solid #bbf7d0; }
.alert-danger { background: var(--danger-bg); color: #b91c1c; border: 1px solid #fecaca; }
.alert-warning { background: var(--warning-bg); color: #b45309; border: 1px solid #fde68a; }
.alert-info { background: var(--primary-light); color: var(--primary-dark); border: 1px solid #bfdbfe; }

/* ===================== FORMS ===================== */
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 16px; }
.form-label { font-weight: 600; font-size: 13px; margin-bottom: 6px; display: block; }
.required { color: var(--danger); }
select.form-control { cursor: pointer; }
textarea.form-control { min-height: 80px; resize: vertical; }
.form-actions { margin-top: 24px; display: flex; gap: 10px; }
.help-text { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.info-circle { color: var(--primary); cursor: help; font-size: 12px; }

/* ===================== INVOICE / SALE FORM ===================== */
.invoice-form .section-title { font-weight: 700; margin: 18px 0 10px; padding-bottom: 8px; border-bottom: 2px solid var(--border); }
.invoice-table { width: 100%; }
.invoice-table th { background: #f8fafc; }
.invoice-table .product-search { position: relative; }
.invoice-table input { width: 100%; padding: 7px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; }
.invoice-totals { width: 100%; max-width: 340px; margin-left: auto; }
.invoice-totals td { padding: 6px 12px; }
.invoice-totals .grand-total { font-size: 18px; font-weight: 700; border-top: 2px solid var(--border); }

/* ===================== CHARTS ===================== */
.chart-container { position: relative; height: 280px; padding: 10px; }

/* ===================== MISC ===================== */
.welcome-banner {
    background: linear-gradient(135deg, #0061f2, #4a6cf7);
    color: #fff; border-radius: var(--radius);
    padding: 20px 24px; margin-bottom: 20px;
    display: flex; justify-content: space-between; align-items: center;
}
.welcome-banner h2 { font-size: 20px; }
.welcome-banner .date-filter { background: rgba(255,255,255,.18); border: none; color: #fff; padding: 8px 14px; border-radius: 6px; }
.empty-box {
    border: 1px dashed var(--border); border-radius: 8px;
    padding: 40px; text-align: center; color: var(--text-muted);
}

/* ===================== STAT ROW & MINI CARDS ===================== */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 20px; }
.stat-card.mini {
    background: var(--white); border-radius: var(--radius); padding: 16px;
    display: flex; align-items: center; gap: 14px;
    box-shadow: var(--shadow); border: 1px solid var(--border);
}
.stat-card.mini .stat-icon {
    width: 48px; height: 48px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; flex-shrink: 0;
}
.stat-card.mini .stat-body { flex: 1; min-width: 0; }
.stat-card.mini .stat-label { font-size: 12px; color: var(--text-muted); margin-bottom: 2px; }
.stat-card.mini .stat-value { font-size: 18px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ===================== CONTACT INFO GRID ===================== */
.contact-info-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px;
}
.contact-info-item { padding: 10px 14px; background: #f8fafc; border-radius: 8px; border: 1px solid var(--border); }
.contact-info-label { font-size: 11px; color: var(--text-muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .5px; display: flex; align-items: center; gap: 6px; }
.contact-info-label i { font-size: 12px; }
.contact-info-value { font-size: 14px; font-weight: 600; word-break: break-word; }

/* ===================== DARK MODE ===================== */
[data-theme="dark"] {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #1e3a5f;
    --sidebar-bg: #0f172a;
    --sidebar-hover: #1e293b;
    --sidebar-active: #3b82f6;
    --header-bg: #1e293b;
    --body-bg: #0f172a;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --border: #334155;
    --success: #22c55e;
    --success-bg: #14532d;
    --warning: #f59e0b;
    --warning-bg: #78350f;
    --danger: #ef4444;
    --danger-bg: #7f1d1d;
    --info: #06b6d4;
    --white: #1e293b;
    --white-rgb: 30, 41, 59;
    --card-bg: #1e293b;
    --shadow: 0 1px 3px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
    --shadow-lg: 0 10px 25px rgba(0,0,0,.4);
}
[data-theme="dark"] .card,
[data-theme="dark"] .stat-card,
[data-theme="dark"] .stat-card.mini { background: var(--card-bg); color: var(--text); border-color: var(--border); }
[data-theme="dark"] .card-header,
[data-theme="dark"] .card-footer,
[data-theme="dark"] .filter-bar,
[data-theme="dark"] table.data-table th,
[data-theme="dark"] table.data-table tr:hover td,
[data-theme="dark"] .invoice-table th,
[data-theme="dark"] .contact-info-item { background: #0f172a; color: var(--text); }
[data-theme="dark"] .table-wrap,
[data-theme="dark"] .invoice-table,
[data-theme="dark"] .data-table { background: var(--card-bg); }
[data-theme="dark"] .form-control,
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select { background: #0f172a; color: var(--text); }
[data-theme="dark"] .btn-secondary,
[data-theme="dark"] .btn-light { background: #334155; color: #f8fafc; border-color: #475569; }
[data-theme="dark"] .btn-secondary:hover,
[data-theme="dark"] .btn-light:hover { background: #475569; }
[data-theme="dark"] .page-title,
[data-theme="dark"] .stat-value,
[data-theme="dark"] .data-table td,
[data-theme="dark"] label,
[data-theme="dark"] strong { color: var(--text); }
[data-theme="dark"] .modal-content,
[data-theme="dark"] .st-modal-box { background: var(--card-bg); color: var(--text); }
[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer { border-color: var(--border); background: #0f172a; }
[data-theme="dark"] .table-toolbar { background: #1e293b; }
[data-theme="dark"] .export-buttons .btn { background: #0f172a; border-color: var(--border); color: var(--text); }
[data-theme="dark"] .data-table th { background: #0f172a; }
[data-theme="dark"] .data-table tr:hover { background: #1e293b; }
[data-theme="dark"] .form-control { background: #0f172a; border-color: var(--border); color: var(--text); }
[data-theme="dark"] .invoice-table th { background: #0f172a; }
[data-theme="dark"] .contact-info-item { background: #0f172a; }
[data-theme="dark"] .login-page { background: linear-gradient(135deg, #1e293b 0%, #0f172a 50%, #020617 100%); }
[data-theme="dark"] .welcome-banner { background: linear-gradient(135deg, #1e40af, #3b82f6); }
[data-theme="dark"] .page-header { border-color: var(--border); }
[data-theme="dark"] .user-dropdown a:hover,
[data-theme="dark"] .branch-dropdown a:hover { background: var(--sidebar-hover); }

.theme-toggle {
    background: none; border: none; font-size: 18px; cursor: pointer;
    color: var(--text-muted); padding: 4px 8px; border-radius: 6px; transition: all .2s;
}
.theme-toggle:hover { background: var(--border); color: var(--primary); }

/* ===================== MOBILE HAMBURGER ===================== */
.mobile-menu-toggle {
    display: none; background: none; border: none; font-size: 22px;
    color: var(--text); cursor: pointer; padding: 4px 8px; margin-right: 8px;
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 1200px) {
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-row { grid-template-columns: repeat(2, 1fr); }
    .grid-2 { grid-template-columns: 1fr; }
    .col-half, .col-third { flex: 0 0 100%; }
}

@media (max-width: 992px) {
    .sidebar { height: 100dvh; max-height: 100dvh; transform: translateX(-100%); transition: transform .25s ease; z-index: 1050; }
    .sidebar.mobile-open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-row { grid-template-columns: repeat(2, 1fr); }
    .grid-2 { grid-template-columns: 1fr; }
    .col-half, .col-third { flex: 0 0 100%; }
    .welcome-banner { flex-direction: column; gap: 12px; text-align: center; }
    .page-header { flex-direction: column; align-items: flex-start; gap: 10px; }
    .page-actions { width: 100%; }
}

@media (max-width: 768px) {
    .mobile-menu-toggle { display: inline-block; }
    .sidebar { transform: translateX(-100%); position: fixed; top: 0; left: 0; bottom: 0; width: 260px; box-shadow: var(--shadow-lg); }
    .sidebar.mobile-open { transform: translateX(0); }
    .main-content { margin-left: 0; padding: 12px; }
    .top-header { padding: 10px 14px; }
    .top-header .header-brand { display: none; }
    .header-date { display: none; }
    .stat-grid { grid-template-columns: 1fr; }
    .stat-row { grid-template-columns: 1fr; gap: 10px; }
    .stat-card { padding: 14px; }
    .stat-card.mini { padding: 12px; }
    .stat-card .stat-value, .stat-card.mini .stat-value { font-size: 16px; }
    .form-row { grid-template-columns: 1fr; }
    .form-actions { flex-direction: column; }
    .form-actions .btn { width: 100%; text-align: center; }
    .user-name { display: none; }
    .page-actions { flex-wrap: wrap; gap: 6px; }
    .page-actions .btn { flex: 1; min-width: 120px; text-align: center; font-size: 13px; }
    .card { margin-bottom: 14px; }
    .card-body { padding: 14px; }
    .contact-info-grid { grid-template-columns: 1fr; }
    .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table.data-table { min-width: 600px; }
    table.data-table th, table.data-table td { padding: 8px 10px; font-size: 13px; }
    .invoice-totals { max-width: 100%; }
    .table-toolbar { flex-direction: column; align-items: stretch; }
    .export-buttons { justify-content: center; }
    .pagination { flex-direction: column; gap: 10px; align-items: center; }
    .welcome-banner { padding: 14px 16px; }
    .welcome-banner h2 { font-size: 16px; }
    .sidebar-overlay {
        display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(0,0,0,.4); z-index: 1040;
    }
    .sidebar-overlay.active { display: block; }
}

@media (max-width: 480px) {
    .stat-grid, .stat-row { grid-template-columns: 1fr; }
    .page-title { font-size: 18px; }
    .btn { padding: 8px 14px; font-size: 13px; }
    .btn-sm { padding: 5px 10px; font-size: 12px; }
    .alert { padding: 10px 12px; font-size: 13px; }
    .top-header { padding: 8px 10px; }
    .header-icon-btn { width: 34px; height: 34px; font-size: 16px; }
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
    display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,.4); z-index: 1040; transition: opacity .25s;
}
.sidebar-overlay.active { display: block; }

/* ===================== FLOATING ACTION BUTTON (FAB) ===================== */
.fab-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: none;
}
.fab-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border: none;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,97,242,.4);
    transition: transform .3s ease, box-shadow .3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}
.fab-btn:hover {
    box-shadow: 0 6px 20px rgba(0,97,242,.5);
    transform: scale(1.05);
}
.fab-btn.rotated {
    transform: rotate(45deg);
}
.fab-menu {
    position: absolute;
    bottom: 70px;
    right: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-end;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all .3s ease;
}
.fab-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.fab-item {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--card-bg);
    color: var(--primary);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0,0,0,.15);
    transition: transform .2s ease, background .2s ease;
}
.fab-item:hover {
    transform: scale(1.1);
    background: var(--primary);
    color: #fff;
}

/* ===================== TOUCH-OPTIMIZED TABLES ===================== */
@media (max-width: 768px) {
    .data-table tbody tr {
        min-height: 44px;
    }
    .data-table td, .data-table th {
        padding: 12px 10px;
        -webkit-tap-highlight-color: transparent;
    }
    .btn-sm {
        min-height: 36px;
        min-width: 36px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
}

/* Show FAB only on mobile */
@media (max-width: 992px) {
    .fab-container { display: block; }
}

/* ===================== PAGINATION STYLES ===================== */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    margin-top: 8px;
    flex-wrap: wrap;
    gap: 10px;
}
.pagination-info {
    font-size: 13px;
    color: var(--text-muted);
}
.pagination-links {
    display: flex;
    gap: 4px;
    align-items: center;
}
.pagination-links a, .pagination-links span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    text-decoration: none;
    color: var(--text);
    background: var(--card-bg);
    transition: all .2s ease;
}
.pagination-links a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.pagination-links span.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    font-weight: 600;
}
.pagination-links span:not(.active) {
    color: var(--text-muted);
}

/* ===================== EXPORT BUTTONS ===================== */
.export-buttons {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.export-buttons .btn {
    padding: 5px 12px;
    font-size: 12px;
}

/* ===================== IMPROVED FORM STYLES ===================== */
.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,97,242,.1);
    outline: none;
}
.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

/* ========================================================================
   v5.8.0 — Date Range Presets, Charts, New Reports styles
   ======================================================================== */
.date-presets { display:flex; gap:6px; flex-wrap:wrap; margin-bottom:10px; align-items:center; }
.date-presets .btn { padding:4px 11px; font-size:12px; border-radius:6px; }
.date-presets .btn.active { background:var(--primary); color:#fff; }

.chart-card { background:var(--card-bg); border:1px solid var(--border); border-radius:10px; padding:18px; margin:14px 0; box-shadow:0 1px 3px rgba(0,0,0,.04); }
.chart-card .chart-title { font-size:15px; font-weight:600; margin-bottom:4px; color:var(--text); display:flex; align-items:center; gap:8px; }
.chart-card .chart-sub { font-size:12px; color:var(--text-muted); margin-bottom:12px; }
.chart-canvas-wrap { position:relative; width:100%; }
.chart-canvas-wrap canvas { width:100% !important; }
.chart-grid-2 { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media (max-width: 900px) { .chart-grid-2 { grid-template-columns:1fr; } }

/* Top N report tables (Top Customers / Top Products) */
.topn-table th, .topn-table td { padding:9px 12px; }
.topn-table .rank { font-weight:700; color:var(--primary); }
.bar-cell { background:linear-gradient(90deg,var(--primary),var(--primary-light,#3b82f6)); height:8px; border-radius:4px; min-width:2px; }
.bar-track { background:#eef2f7; border-radius:4px; height:8px; width:100%; overflow:hidden; }

/* Stock value trend table */
.value-trend-table th, .value-trend-table td { padding:9px 12px; }
.trend-up   { color:var(--success); font-weight:600; }
.trend-down { color:var(--danger); font-weight:600; }
.trend-flat { color:var(--text-muted); }

@media print {
    .date-presets, .chart-card .no-print { display:none !important; }
    .chart-card { box-shadow:none; border:1px solid #ccc; break-inside:avoid; }
}

/* Print safety normalization: preserve wide report columns and long IMEI values. */
@media print {
    .table-wrap, .st-table-responsive, .card-body[style*="overflow-x"] {
        overflow: visible !important;
        max-height: none !important;
    }
    table.data-table, table.table, .invoice-table, .st-table {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
        table-layout: auto !important;
        page-break-inside: auto;
    }
    table.data-table thead, table.table thead, .invoice-table thead, .st-table thead {
        display: table-header-group;
    }
    table.data-table tr, table.table tr, .invoice-table tr, .st-table tr {
        break-inside: avoid;
        page-break-inside: avoid;
    }
    table.data-table th, table.data-table td, table.table th, table.table td,
    .invoice-table th, .invoice-table td, .st-table th, .st-table td {
        overflow-wrap: anywhere;
        word-break: normal;
    }
    .data-table th, .data-table td { font-size: 10px; padding: 6px 7px; }
}

@media print and (max-width: 768px) {
    table.data-table { min-width: 0 !important; }
}

/* ===== v5.8.0: New Report Badges ===== */
.badge-new {
    display:inline-block;
    background:linear-gradient(135deg,#0061f2,#0ea5e9);
    color:#fff;
    font-size:9px;
    font-weight:700;
    padding:2px 7px;
    border-radius:10px;
    margin-left:4px;
    vertical-align:middle;
    text-transform:uppercase;
    letter-spacing:0.5px;
}

/* ===================== DARK MODE — Additional Component Fixes ===================== */
[data-theme="dark"] .chart-card { background: var(--card-bg); }
[data-theme="dark"] .st-modal-box { background: var(--card-bg); border-color: var(--border); }
[data-theme="dark"] .st-modal-header { border-color: var(--border); }
[data-theme="dark"] .st-search-dropdown,
[data-theme="dark"] .autocomplete-results { background: var(--card-bg); border-color: var(--border); box-shadow: 0 8px 24px rgba(0,0,0,.5); }
[data-theme="dark"] .st-search-item,
[data-theme="dark"] .ac-item { border-color: var(--border); }
[data-theme="dark"] .st-search-item:hover,
[data-theme="dark"] .st-search-item.is-active,
[data-theme="dark"] .ac-item:hover,
[data-theme="dark"] .ac-item.active { background: var(--sidebar-hover); }
[data-theme="dark"] .st-search-selected { background: #0f172a; border-color: var(--border); }
[data-theme="dark"] .st-btn { background: var(--card-bg); border-color: var(--border); color: var(--text); }
[data-theme="dark"] .fab-item { background: var(--card-bg); }
[data-theme="dark"] .pagination-links a { background: var(--card-bg); }
[data-theme="dark"] .modal-backdrop-dim { background: rgba(0,0,0,.6); }
[data-theme="dark"] .top-header { background: var(--header-bg); border-color: var(--border); }
[data-theme="dark"] .sidebar { background: var(--sidebar-bg); }
[data-theme="dark"] .user-dropdown,
[data-theme="dark"] .branch-dropdown { background: var(--card-bg); border-color: var(--border); box-shadow: 0 8px 24px rgba(0,0,0,.5); }
[data-theme="dark"] .user-dropdown a,
[data-theme="dark"] .branch-dropdown a { color: var(--text); }
[data-theme="dark"] .header-icon-btn { color: var(--text-muted); }
[data-theme="dark"] .header-icon-btn:hover { background: var(--sidebar-hover); color: var(--text); }
[data-theme="dark"] .header-date { color: var(--text-muted); }
[data-theme="dark"] .user-avatar { background: var(--primary); }
[data-theme="dark"] .badge-count { background: var(--danger); color: #fff; }
[data-theme="dark"] select { background: #0f172a; border-color: var(--border); color: var(--text); }
[data-theme="dark"] select option { background: #0f172a; color: var(--text); }
[data-theme="dark"] textarea { background: #0f172a; border-color: var(--border); color: var(--text); }
[data-theme="dark"] .badge-sm { background: var(--sidebar-hover); color: var(--text-muted); }
[data-theme="dark"] .imei-box { background: #0f172a; border-color: var(--border); }
[data-theme="dark"] .payment-summary { background: #0f172a; border-color: var(--border); }
[data-theme="dark"] .stat-card .stat-icon { opacity: .85; }
[data-theme="dark"] .table-wrap { background: var(--card-bg); border-color: var(--border); }
[data-theme="dark"] .data-table td { border-color: var(--border); }
[data-theme="dark"] .data-table th { border-color: var(--border); color: var(--text); }
[data-theme="dark"] .invoice-totals { background: #0f172a; }
[data-theme="dark"] .invoice-totals td { border-color: var(--border); }
[data-theme="dark"] hr { border-color: var(--border); }
[data-theme="dark"] .nav-tab { background: #0f172a; border-color: var(--border); color: var(--text-muted); }
[data-theme="dark"] .nav-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
[data-theme="dark"] .alert { border-color: var(--border); }
[data-theme="dark"] .login-box { background: var(--card-bg); }
[data-theme="dark"] .login-box .form-control { background: #0f172a; }

/* Dashboard responsive polish */
.dashboard-filter {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}
.dashboard-chart-wide { flex: 3; }
.dashboard-chart-narrow { flex: 2; }
.dashboard-chart-equal { flex: 1; }
.dashboard-aging-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

@media (max-width: 768px) {
    .dashboard-filter { width: 100%; }
    .dashboard-filter .date-filter {
        flex: 1 1 145px;
        min-width: 0;
    }
    .dashboard-filter button.date-filter { flex: 0 1 auto; }
    .dashboard-chart-wide,
    .dashboard-chart-narrow,
    .dashboard-chart-equal { flex: 1 1 100%; }
    .dashboard-aging-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 420px) {
    .dashboard-aging-grid { grid-template-columns: 1fr; }
    .dashboard-filter .date-filter,
    .dashboard-filter button.date-filter { width: 100%; flex-basis: 100%; }
}
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #eff6ff;
    --accent: #06b6d4;
    --sidebar-bg: #0f172a;
    --sidebar-hover: #1e293b;
    --sidebar-active: #2563eb;
    --header-bg: rgba(255,255,255,.92);
    --body-bg: #f8fafc;
    --text: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --success: #16a34a;
    --success-bg: #f0fdf4;
    --warning: #d97706;
    --warning-bg: #fffbeb;
    --danger: #dc2626;
    --danger-bg: #fef2f2;
    --info: #0891b2;
    --card-bg: #ffffff;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 2px rgba(15,23,42,.04), 0 4px 12px rgba(15,23,42,.05);
    --shadow-lg: 0 16px 40px rgba(15,23,42,.12);
    --focus-ring: 0 0 0 4px rgba(37,99,235,.14);
}

html { scroll-behavior: smooth; }
body {
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--body-bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.55;
    letter-spacing: -.005em;
}
button, input, select, textarea { font: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: none; box-shadow: var(--focus-ring); }

/* Shared page shell */
.main-content { background: var(--body-bg); }
.top-header {
    min-height: 68px;
    padding: 12px 24px;
    border-bottom: 1px solid rgba(226,232,240,.82);
    background: var(--header-bg);
    backdrop-filter: blur(14px);
    box-shadow: 0 1px 0 rgba(15,23,42,.02);
}
.content-body { max-width: 1680px; margin: 0 auto; padding: 24px; }
.page-header { margin-bottom: 22px; }
.page-title { font-size: clamp(20px, 2vw, 28px); font-weight: 750; letter-spacing: -.035em; color: var(--text); }
.page-subtitle, .page-header small { color: var(--text-muted); font-size: 13px; }
.page-actions { gap: 8px; }

/* Navigation */
.sidebar { width: 268px; background: linear-gradient(180deg, #0f172a 0%, #111c33 100%); box-shadow: 8px 0 24px rgba(15,23,42,.08); }
.sidebar-brand { min-height: 68px; padding: 16px 20px; letter-spacing: -.02em; }
.sidebar-brand .brand-icon { background: linear-gradient(135deg, #3b82f6, #06b6d4); box-shadow: 0 6px 16px rgba(37,99,235,.35); }
.menu-link { margin: 2px 10px; border-left: 0; border-radius: 9px; padding: 11px 12px; }
.menu-link:hover { background: rgba(148,163,184,.13); }
.menu-link.active { background: linear-gradient(90deg, rgba(37,99,235,.95), rgba(6,182,212,.72)); box-shadow: 0 6px 14px rgba(37,99,235,.22); }
.submenu { background: rgba(2,6,23,.22); margin: 0 10px; border-radius: 9px; }
.submenu .menu-link { margin: 2px 0; padding-left: 42px; }

/* Consistent interactive controls */
.btn, .st-btn { min-height: 40px; border-radius: var(--radius-sm); font-weight: 650; letter-spacing: -.01em; box-shadow: 0 1px 1px rgba(15,23,42,.04); }
.btn-primary, .st-btn-primary { background: linear-gradient(135deg, var(--primary), #3b82f6); box-shadow: 0 5px 12px rgba(37,99,235,.18); }
.btn-primary:hover, .st-btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 18px rgba(37,99,235,.25); }
.btn-secondary { border: 1px solid var(--border); background: var(--card-bg); color: var(--text); }
.form-control { min-height: 42px; border-radius: var(--radius-sm); border-color: #d7e0eb; background: var(--card-bg); color: var(--text); }
.form-control:hover { border-color: #b8c6d8; }
.form-control:focus { border-color: var(--primary); box-shadow: var(--focus-ring); }
.form-group label, .st-label { color: #334155; font-size: 12px; font-weight: 750; letter-spacing: .01em; }

/* Shared surfaces */
.card, .stat-card, .chart-card, .st-modal-box {
    border: 1px solid rgba(226,232,240,.92);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.card-header, .card-footer { border-color: var(--border); background: transparent; }
.card-header { padding: 17px 20px; font-weight: 750; }
.card-body { padding: 20px; }
.stat-card { position: relative; overflow: hidden; transition: transform .18s ease, box-shadow .18s ease; }
.stat-card::after { content: ''; position: absolute; width: 120px; height: 120px; right: -44px; top: -54px; border-radius: 50%; background: rgba(37,99,235,.06); }
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.stat-value { letter-spacing: -.04em; font-weight: 780; }

/* Tables and filters */
.table-wrap, .data-table, .invoice-table { border-radius: var(--radius); }
.table-toolbar, .filter-bar { gap: 10px; padding: 14px 16px; border: 1px solid var(--border); border-radius: var(--radius) var(--radius) 0 0; background: #fbfdff; }
table.data-table th, .invoice-table th, .st-table th { padding: 12px 14px; background: #f1f5f9; color: #334155; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; }
table.data-table td, .invoice-table td, .st-table td { padding: 12px 14px; vertical-align: middle; }
table.data-table tbody tr, .st-table tbody tr { transition: background .15s ease; }
table.data-table tbody tr:hover, .st-table tbody tr:hover { background: #f8fbff; }
.badge, .badge-sm { border-radius: 999px; font-weight: 700; }
.pagination-links a, .pagination-links span { border-radius: 8px; }

/* Alerts */
.alert, .server-actionable-error, .inline-validation-panel { border-radius: var(--radius-sm); box-shadow: none; }

@media (max-width: 992px) {
    .content-body { padding: 20px; }
    .top-header { padding: 12px 18px; }
}
@media (max-width: 768px) {
    .content-body { padding: 14px; }
    .top-header { min-height: 60px; padding: 10px 12px; }
    .global-search-wrap { display: none !important; }
    .page-title { font-size: 21px; }
    .card-body { padding: 16px; }
    .table-toolbar, .filter-bar { padding: 12px; }
    .table-wrap { border: 1px solid var(--border); border-radius: var(--radius); }
}

@media print {
    body { background: #fff !important; color: #111827 !important; font-size: 10pt; }
    .sidebar, .top-header, .report-export-toolbar, .page-actions, .no-print, .fab-container, .sidebar-overlay { display: none !important; }
    .main-content { margin: 0 !important; }
    .content-body { max-width: none; padding: 0 !important; }
    .card, .chart-card, .table-wrap { border: 1px solid #cbd5e1 !important; box-shadow: none !important; break-inside: avoid; }
    .page-title { font-size: 18pt; }
    a { color: #111827 !important; text-decoration: none !important; }
}

[data-theme="dark"] {
    --body-bg: #020617;
    --header-bg: rgba(15,23,42,.92);
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --border: #263449;
    --card-bg: #0f172a;
    --primary-light: #172554;
    --shadow: 0 1px 2px rgba(0,0,0,.28), 0 8px 24px rgba(0,0,0,.18);
}
[data-theme="dark"] .top-header { border-color: var(--border); }
[data-theme="dark"] .table-toolbar, [data-theme="dark"] .filter-bar { background: #111c33; }
[data-theme="dark"] table.data-table th, [data-theme="dark"] .invoice-table th, [data-theme="dark"] .st-table th { background: #111c33; color: #cbd5e1; }
[data-theme="dark"] table.data-table tbody tr:hover, [data-theme="dark"] .st-table tbody tr:hover { background: #162238; }
[data-theme="dark"] .form-group label, [data-theme="dark"] .st-label { color: #cbd5e1; }

/* Public authentication screen */
.login-page {
    background: radial-gradient(circle at 15% 15%, rgba(125,211,252,.22), transparent 30%), linear-gradient(135deg, #0f172a 0%, #1d4ed8 52%, #0891b2 100%);
    overflow: hidden;
}
.login-page::after { content: ''; position: absolute; inset: auto -10% -35% auto; width: 58vw; height: 58vw; border-radius: 50%; background: rgba(255,255,255,.07); }
.login-topbar { padding: 24px 32px; }
.login-logo { font-size: 18px; letter-spacing: -.02em; }
.login-logo .logo-icon { width: 40px; height: 40px; border-radius: 12px; background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.2); }
.lang-switch { display: flex; gap: 6px; padding: 4px; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; background: rgba(15,23,42,.16); }
.lang-switch a { margin: 0; padding: 6px 10px; border-radius: 999px; }
.lang-switch a.active { background: rgba(255,255,255,.18); border-bottom: 0; }
.login-card { padding: 40px; border: 1px solid rgba(255,255,255,.55); border-radius: 20px; box-shadow: 0 24px 70px rgba(2,6,23,.35); }
.login-card h1 { font-size: 28px; letter-spacing: -.04em; }
.login-card .subtitle { margin-bottom: 30px; }
.login-card .btn-lg { min-height: 48px; }
.login-card .input-icon { right: 8px; }
@media (max-width: 520px) {
    .login-topbar { padding: 18px; }
    .login-logo span { display: none; }
    .login-card { padding: 28px 22px; border-radius: 16px; }
}

/* Dashboard composition */
.welcome-banner { border-radius: 16px; padding: 24px 26px; background: linear-gradient(120deg, #1d4ed8, #2563eb 58%, #0891b2); box-shadow: 0 12px 28px rgba(37,99,235,.2); }
.welcome-banner h2 { letter-spacing: -.035em; }
.dashboard-filter { gap: 8px; }
.dashboard-filter .date-filter { min-height: 38px; border: 1px solid rgba(255,255,255,.28); border-radius: 8px; background: rgba(255,255,255,.13); color: #fff; padding: 8px 10px; }
.dashboard-filter input.date-filter { color-scheme: dark; }
.stat-card-capital { border-color: rgba(37,99,235,.45); }
.dashboard-aging-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.dashboard-aging-item { padding: 13px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: linear-gradient(180deg, var(--card-bg), var(--body-bg)); text-align: center; }
.dashboard-aging-item .text-muted { font-size: 11px; }
.dashboard-aging-item strong { display: block; margin-top: 6px; font-size: 15px; letter-spacing: -.02em; }
.dashboard-chart-row .card, .dashboard-chart-row .chart-card { height: 100%; }
.chart-container { min-height: 190px; }
@media (max-width: 768px) { .dashboard-aging-grid { grid-template-columns: repeat(2, 1fr); } .welcome-banner { padding: 20px; } .dashboard-filter { width: 100%; flex-wrap: wrap; } .dashboard-filter .date-filter { flex: 1 1 130px; } }
@media (max-width: 420px) { .dashboard-aging-grid { grid-template-columns: 1fr 1fr; gap: 8px; } }
[data-theme="dark"] .dashboard-aging-item { background: #111c33; }

/* Transaction-page design freeze: Add Sale and Add Purchase retain their established UI. */
#saleForm .st-card, #purchaseForm .st-card {
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
#saleForm .st-input, #purchaseForm .st-input {
    border-radius: 6px;
    min-height: 46px;
}
#saleForm .st-toggle, #purchaseForm .st-toggle { border-radius: 0; box-shadow: none; }
#saleForm .st-item, #purchaseForm .st-item { border-radius: 8px; }
#saleForm .st-pay-total, #purchaseForm .st-pay-total { border-radius: 8px; }
#saleForm .st-action-btn, #purchaseForm .st-action-btn { transform: none; box-shadow: none; }
#saleForm .st-action-btn:hover, #purchaseForm .st-action-btn:hover { transform: none; }

/* Non-transaction list/report filters */
.filter-form {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    flex-wrap: wrap;
    margin: 0 0 16px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
    box-shadow: 0 1px 2px rgba(15,23,42,.03);
}
.filter-form .form-group { margin: 0; min-width: 150px; }
.filter-form .form-control { min-width: 145px; }
.filter-form > input.form-control { min-height: 42px; }
.filter-form > .btn { min-height: 42px; }
@media (max-width: 768px) {
    .filter-form { align-items: stretch; padding: 12px; }
    .filter-form .form-group, .filter-form > input.form-control, .filter-form > .btn { width: 100%; min-width: 0 !important; }
    .filter-form > input.form-control { flex: 1 1 100% !important; }
}
[data-theme="dark"] .filter-form { background: #0f172a; }

/* Shared non-transaction list/report finishing touches */
.no-data, .empty-state, .empty-state-card {
    color: var(--text-muted);
    text-align: center;
    padding: 32px 18px;
    background: linear-gradient(180deg, var(--card-bg), var(--body-bg));
}
.empty-state-card { border: 1px dashed var(--border); border-radius: var(--radius); }
.empty-state i, .empty-state-card i { display: block; margin-bottom: 10px; color: #94a3b8; font-size: 28px; }
.page-actions { display: flex; align-items: center; flex-wrap: wrap; }
.page-actions .btn { white-space: nowrap; }
.status-badge, .badge-status, .badge-ok, .badge-pending, .badge-low { padding: 4px 9px; font-size: 11px; }
.table-wrap { scrollbar-color: #cbd5e1 transparent; }
.table-wrap::-webkit-scrollbar { height: 8px; }
.table-wrap::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 999px; }
@media (max-width: 768px) {
    .page-actions { width: 100%; }
    .page-actions .btn { flex: 1 1 auto; }
    .export-buttons { width: 100%; }
    .export-buttons .btn { flex: 1 1 auto; }
}

/* Non-transaction forms and detail surfaces */
.form-grid, .form-row, .form-section-grid {
    gap: 16px;
}
.form-section, .form-panel {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
}
.form-section-title, .form-panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    font-size: 15px;
    font-weight: 750;
}
.required { color: var(--danger); }
.form-error, .field-error, .invalid-feedback { margin-top: 5px; color: var(--danger); font-size: 12px; }
.form-control.is-invalid, .form-control.error { border-color: var(--danger); box-shadow: 0 0 0 3px rgba(220,38,38,.1); }
.form-actions { display: flex; justify-content: flex-end; align-items: center; gap: 8px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.detail-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 18px; }
.detail-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; color: var(--text-muted); font-size: 13px; }
@media (max-width: 768px) {
    .form-grid, .form-row, .form-section-grid { grid-template-columns: 1fr !important; }
    .form-section, .form-panel { padding: 14px; }
    .form-actions { flex-direction: column-reverse; align-items: stretch; }
    .form-actions .btn { width: 100%; }
    .detail-header { flex-direction: column; }
}