:root {
    --bg: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #263449;
    --bg-input: #0b1324;
    --border: #334155;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --purple: #8b5cf6;
    --radius: 14px;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.35);
}

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

body {
    font-family: 'Cairo', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    padding-bottom: 50px;
}

.container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 18px;
}

/* Header */
.app-header {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border-bottom: 1px solid var(--border);
    padding: 18px 0;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.car-badge {
    background: linear-gradient(135deg, var(--primary), var(--purple));
    color: #fff;
    font-weight: 800;
    padding: 10px 16px;
    border-radius: 12px;
    font-size: 1.05rem;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
    white-space: nowrap;
}

.brand h1 {
    font-size: 1.25rem;
    font-weight: 800;
    color: #fff;
}

.subtitle {
    font-size: 0.88rem;
    color: var(--text-muted);
}

.subtitle strong {
    color: #38bdf8;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-input);
    padding: 6px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.filter-group label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.filter-group select {
    background: transparent;
    border: none;
    color: var(--text);
    font-family: inherit;
    font-weight: 700;
    font-size: 0.92rem;
    outline: none;
    cursor: pointer;
}

.filter-group select option {
    background: var(--bg-card);
    color: var(--text);
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    gap: 10px;
    margin: 22px 0;
    overflow-x: auto;
    padding-bottom: 4px;
}

.tab-btn {
    background: var(--bg-card);
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 11px 20px;
    border-radius: 11px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text);
    border-color: var(--primary);
}

.tab-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* Quick Forms Grid */
.quick-forms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 20px;
    margin-bottom: 26px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 8px;
}

.card-header h2 {
    font-size: 1.1rem;
    font-weight: 700;
}

.badge {
    font-size: 0.78rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
}

.badge-info {
    background: rgba(59, 130, 246, 0.18);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.35);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.18);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.35);
}

.badge-success {
    background: rgba(16, 185, 129, 0.18);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.35);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.18);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.35);
}

/* Forms */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 5px;
    font-weight: 600;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.input-with-unit {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-unit input {
    padding-left: 50px;
    font-weight: 700;
    font-size: 1.05rem;
}

.input-with-unit .unit {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    font-weight: 700;
    font-size: 0.88rem;
}

/* Live Calculation Box */
.calc-preview {
    background: rgba(15, 23, 42, 0.75);
    border: 1px dashed var(--border);
    border-radius: 11px;
    padding: 12px 14px;
    margin-bottom: 12px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    text-align: center;
}

.calc-item span {
    display: block;
    font-size: 0.76rem;
    color: var(--text-muted);
}

.calc-item strong {
    font-size: 0.98rem;
    font-weight: 800;
}

.calc-item.driver-cut strong {
    color: var(--warning);
}

.calc-item.car-cut strong {
    color: var(--success);
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: 10px;
    font-family: inherit;
    font-weight: 700;
    font-size: 0.92rem;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    flex: 1;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-danger {
    background: #e11d48;
    color: #fff;
    flex: 1;
}

.btn-danger:hover {
    background: #be123c;
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-muted);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.82rem;
}

.hidden {
    display: none !important;
}

/* KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(225px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.kpi-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 5px;
    height: 100%;
}

.kpi-gross::after { background: var(--primary); }
.kpi-drivers::after { background: var(--warning); }
.kpi-car-revenue::after { background: #06b6d4; }
.kpi-expenses::after { background: var(--danger); }
.kpi-net-profit::after { background: var(--success); }

.kpi-icon {
    font-size: 1.8rem;
    background: rgba(255, 255, 255, 0.05);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.kpi-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 600;
}

.kpi-value {
    font-size: 1.4rem;
    font-weight: 800;
    margin: 2px 0;
}

.kpi-net-profit .kpi-value {
    color: var(--success);
}

.kpi-expenses .kpi-value {
    color: #f87171;
}

.kpi-sub {
    font-size: 0.76rem;
    color: var(--text-muted);
    display: block;
}

/* Partners Split Banner */
.partners-banner {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.98) 100%);
    border: 1px solid rgba(59, 130, 246, 0.4);
    margin-bottom: 24px;
}

.partners-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    flex-wrap: wrap;
    gap: 10px;
}

.partners-header h2 {
    font-size: 1.18rem;
    color: #fff;
}

.partners-header p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.period-pill {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.35);
    padding: 5px 14px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.85rem;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
}

.partner-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.partner-avatar {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
    flex-shrink: 0;
}

.partner-avatar.partner-2 {
    background: linear-gradient(135deg, #10b981, #047857);
}

.partner-role {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 600;
}

.partner-name {
    font-size: 1.15rem;
    font-weight: 800;
    margin-bottom: 2px;
}

.partner-amount {
    font-size: 1.45rem;
    font-weight: 800;
    color: #34d399;
}

/* Drivers Comparison */
.drivers-comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.driver-stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 12px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.driver-metrics {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.d-metric {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.92rem;
    padding: 6px 10px;
    background: rgba(15, 23, 42, 0.5);
    border-radius: 8px;
}

.text-warning { color: var(--warning); }
.text-success { color: var(--success); }
.text-danger { color: #f87171; }

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.chart-card h3 {
    font-size: 1rem;
    margin-bottom: 14px;
    color: var(--text);
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* Tables */
.table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.table-header h2 {
    font-size: 1.15rem;
}

.table-header p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.table-Tools {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.table-Tools select {
    background: var(--bg-input);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 7px 12px;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.88rem;
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

.data-table th,
.data-table td {
    padding: 12px 14px;
    text-align: right;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: rgba(15, 23, 42, 0.7);
    color: var(--text-muted);
    font-weight: 700;
    font-size: 0.83rem;
    white-space: nowrap;
}

.data-table tbody tr:hover {
    background: var(--bg-card-hover);
}

.action-btns {
    display: flex;
    gap: 6px;
}

.icon-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 5px 9px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.82rem;
}

.icon-btn:hover {
    border-color: var(--primary);
}

.icon-btn.del:hover {
    border-color: var(--danger);
    color: var(--danger);
}

/* Modal */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 16px;
}

.modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    max-width: 500px;
    width: 100%;
    padding: 22px;
    box-shadow: var(--shadow);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 18px 0;
}

.backup-section h4 {
    margin-bottom: 6px;
}

.backup-section p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.backup-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.file-label {
    cursor: pointer;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 24px;
    background: #10b981;
    color: #fff;
    padding: 12px 22px;
    border-radius: 10px;
    font-weight: 700;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    z-index: 200;
}

@media (max-width: 900px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
    .calc-preview {
        grid-template-columns: 1fr;
        text-align: right;
    }
    .calc-item {
        display: flex;
        justify-content: space-between;
    }
}

@media print {
    .app-header, .nav-tabs, .quick-forms-grid, .table-Tools, .btn {
        display: none !important;
    }
    body {
        background: #fff;
        color: #000;
    }
    .card {
        border: 1px solid #ccc;
        box-shadow: none;
        background: #fff;
        color: #000;
    }
}