:root {
    --primary: #1a3c5e;
    --primary-light: #2d6a9f;
    --accent: #f39c12;
    --sidebar-width: 260px;
    --header-height: 60px;
    --bg: #f0f2f5;
    --card-bg: #ffffff;
    --text: #2c3e50;
    --text-muted: #6c757d;
    --border: #dee2e6;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #3498db;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
}

/* ── Sidebar ── */
.sidebar {
    position: fixed;
    top: 0; left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--primary);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    overflow-y: auto;
    transition: transform 0.3s;
}

.sidebar-brand {
    padding: 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.sidebar-brand .company-name {
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 1px;
}

.sidebar-brand .company-sub {
    color: var(--accent);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.sidebar-brand .brand-icon {
    font-size: 36px;
    margin-bottom: 8px;
    display: block;
}

.sidebar nav { flex: 1; padding: 10px 0; }

.nav-section {
    padding: 8px 16px 4px;
    font-size: 10px;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-top: 8px;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 20px;
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    font-size: 13.5px;
}

.nav-item a:hover,
.nav-item a.active {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border-left-color: var(--accent);
}

.nav-item a .nav-icon { font-size: 16px; width: 20px; text-align: center; }

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-footer .user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,0.8);
    font-size: 13px;
}

.sidebar-footer .avatar {
    width: 36px; height: 36px;
    background: var(--accent);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; color: #fff; font-size: 14px;
    flex-shrink: 0;
}

/* ── Main Content ── */
.main-wrapper {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    height: var(--header-height);
    background: #fff;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.topbar-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
}

.topbar-right { display: flex; align-items: center; gap: 16px; }

.page-content { padding: 24px; flex: 1; }

/* ── Cards ── */
.card {
    background: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 1px 6px rgba(0,0,0,0.07);
    border: 1px solid var(--border);
    margin-bottom: 20px;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fff;
    border-radius: 10px 10px 0 0;
}

.card-header h5 {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    margin: 0;
}

.card-body { padding: 20px; }

/* ── Stat Cards ── */
.stat-card {
    background: #fff;
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 1px 6px rgba(0,0,0,0.07);
    border: 1px solid var(--border);
    border-left: 4px solid;
    margin-bottom: 20px;
}

.stat-card.blue { border-left-color: #3498db; }
.stat-card.green { border-left-color: #27ae60; }
.stat-card.orange { border-left-color: #f39c12; }
.stat-card.red { border-left-color: #e74c3c; }
.stat-card.purple { border-left-color: #9b59b6; }
.stat-card.teal { border-left-color: #1abc9c; }

.stat-icon {
    font-size: 32px;
    width: 60px; height: 60px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}

.stat-card.blue .stat-icon { background: #ebf5fb; }
.stat-card.green .stat-icon { background: #eafaf1; }
.stat-card.orange .stat-icon { background: #fef9e7; }
.stat-card.red .stat-icon { background: #fdedec; }
.stat-card.purple .stat-icon { background: #f5eef8; }
.stat-card.teal .stat-icon { background: #e8f8f5; }

.stat-info .stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.2;
}

.stat-info .stat-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

/* ── Tables ── */
.table-wrapper { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; }

table th {
    background: #f8f9fa;
    padding: 12px 14px;
    text-align: left;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

table td {
    padding: 12px 14px;
    border-bottom: 1px solid #f0f0f0;
    color: var(--text);
    vertical-align: middle;
}

table tbody tr:hover { background: #fafafa; }

/* ── Badges ── */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success { background: #eafaf1; color: #27ae60; }
.badge-danger  { background: #fdedec; color: #e74c3c; }
.badge-warning { background: #fef9e7; color: #f39c12; }
.badge-info    { background: #ebf5fb; color: #3498db; }
.badge-secondary { background: #f0f0f0; color: #666; }
.badge-purple  { background: #f5eef8; color: #9b59b6; }

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    line-height: 1.4;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); }
.btn-success { background: #27ae60; color: #fff; }
.btn-success:hover { background: #219a52; }
.btn-danger { background: #e74c3c; color: #fff; }
.btn-danger:hover { background: #c0392b; }
.btn-warning { background: #f39c12; color: #fff; }
.btn-warning:hover { background: #d68910; }
.btn-info { background: #3498db; color: #fff; }
.btn-info:hover { background: #2980b9; }
.btn-secondary { background: #6c757d; color: #fff; }
.btn-secondary:hover { background: #545b62; }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-icon { padding: 6px 8px; }

/* ── Forms ── */
.form-group { margin-bottom: 18px; }

.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
}

.form-label .required { color: var(--danger); }

.form-control, .form-select {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13.5px;
    color: var(--text);
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(45,106,159,0.1);
}

.form-control::placeholder { color: #adb5bd; }

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }

.form-text { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ── Alerts ── */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 13.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success { background: #eafaf1; border: 1px solid #a9dfbf; color: #1e8449; }
.alert-danger  { background: #fdedec; border: 1px solid #f5b7b1; color: #c0392b; }
.alert-warning { background: #fef9e7; border: 1px solid #f9e79f; color: #9a7d0a; }
.alert-info    { background: #ebf5fb; border: 1px solid #aed6f1; color: #1a5276; }

/* ── Login Page ── */
.login-page {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, #0d2137 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.login-logo {
    text-align: center;
    margin-bottom: 28px;
}

.login-logo .logo-icon { font-size: 48px; margin-bottom: 8px; }

.login-logo h2 {
    color: var(--primary);
    font-size: 22px;
    font-weight: 700;
}

.login-logo p { color: var(--text-muted); font-size: 13px; }

/* ── Utilities ── */
.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.fw-bold { font-weight: 600; }
.w-100 { width: 100%; }
.text-center { text-align: center; }
.text-right { text-align: right; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-6 { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }

/* Action buttons */
.action-btns { display: flex; gap: 6px; }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}

.empty-state .empty-icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* Section divider */
.section-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 20px 0;
}

/* Page header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.page-header h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

.page-header .breadcrumb {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Info box */
.info-box {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

.info-row {
    display: flex;
    padding: 6px 0;
    border-bottom: 1px solid #eee;
    font-size: 13.5px;
}

.info-row:last-child { border-bottom: none; }
.info-row .info-label { color: var(--text-muted); width: 160px; flex-shrink: 0; }
.info-row .info-value { font-weight: 500; }

/* Hamburger for mobile */
.menu-toggle { display: none; background: none; border: none; font-size: 22px; cursor: pointer; }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-wrapper { margin-left: 0; }
    .menu-toggle { display: block; }
    .grid-2, .grid-3, .grid-4, .grid-6 { grid-template-columns: 1fr; }
    .form-row-2, .form-row-3 { grid-template-columns: 1fr; }
}

/* Print */
@media print {
    .sidebar, .topbar, .btn, .action-btns { display: none !important; }
    .main-wrapper { margin-left: 0; }
    .card { box-shadow: none; border: 1px solid #ddd; }
}