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

:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: #252542;
    --text-primary: #ffffff;
    --text-secondary: #888;
    --accent: #e94560;
    --success: #4caf50;
    --warning: #ff9800;
    --danger: #f44336;
    --border: #3a3a5a;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* Login */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #0f0f1a 100%);
}

.login-box {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    width: 100%;
    max-width: 400px;
}

.login-logo {
    font-size: 60px;
    margin-bottom: 20px;
}

.login-box h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

.company-name {
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 14px;
}

.login-box input {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 16px;
    margin-bottom: 15px;
}

.login-box button {
    width: 100%;
    padding: 15px;
    background: var(--accent);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}

.login-box button:hover {
    background: #d63550;
}

.error {
    color: var(--danger);
    margin-top: 10px;
    font-size: 14px;
}

/* Dashboard Layout */
#dashboard {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: 25px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 15px;
}

.sidebar-header .logo {
    font-size: 40px;
}

.sidebar-header h2 {
    font-size: 20px;
}

.sidebar-header small {
    color: var(--text-secondary);
    font-size: 12px;
}

.menu {
    list-style: none;
    flex: 1;
    padding: 20px 0;
}

.menu li {
    padding: 15px 25px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.menu li:hover {
    background: rgba(233, 69, 96, 0.1);
    color: var(--text-primary);
}

.menu li.active {
    background: rgba(233, 69, 96, 0.15);
    color: var(--accent);
    border-left-color: var(--accent);
}

.menu .icon {
    font-size: 20px;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border);
}

.logout-btn {
    width: 100%;
    padding: 12px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.logout-btn:hover {
    background: var(--danger);
    border-color: var(--danger);
    color: white;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 30px;
    min-height: 100vh;
}

/* Pages */
.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.page-header h1 {
    font-size: 28px;
}

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

.filters select,
.filters input {
    padding: 10px 15px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

/* KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.kpi-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    border: 1px solid var(--border);
    transition: transform 0.3s, box-shadow 0.3s;
}

.kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.kpi-card.profit {
    background: linear-gradient(135deg, #1a472a 0%, #0d2818 100%);
    border-color: #2a5a3a;
}

.kpi-icon {
    font-size: 35px;
}

.kpi-content h3 {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.kpi-value {
    font-size: 24px;
    font-weight: bold;
}

.kpi-change {
    font-size: 12px;
    color: var(--text-secondary);
}

.kpi-change.positive {
    color: var(--success);
}

.kpi-change.negative {
    color: var(--danger);
}

/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.chart-box {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border);
}

.chart-box h3 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--text-secondary);
}

/* Tables */
.section-box {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--border);
}

.section-box h3 {
    font-size: 16px;
    margin-bottom: 15px;
}

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

.data-table th,
.data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 13px;
}

.data-table td {
    font-size: 14px;
}

.data-table tbody tr:hover {
    background: rgba(233, 69, 96, 0.05);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
}

.tabs button {
    padding: 10px 20px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.tabs button:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.tabs button.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.ads-tab,
.products-tab,
.finance-tab {
    display: none;
}

.ads-tab.active,
.products-tab.active,
.finance-tab.active {
    display: block;
}

/* Order Stats */
.order-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.order-stat {
    background: var(--bg-card);
    padding: 15px 25px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 13px;
}

.badge.pending { background: #ff9800; color: #000; }
.badge.shipping { background: #2196f3; color: #fff; }
.badge.completed { background: #4caf50; color: #fff; }
.badge.returned { background: #f44336; color: #fff; }
.badge.cancelled { background: #888; color: #fff; }

.count {
    font-size: 24px;
    font-weight: bold;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.product-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border);
}

.product-card h3 {
    font-size: 16px;
    margin-bottom: 15px;
}

.product-info {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}

.product-info:last-child {
    border-bottom: none;
}

.product-info .label {
    color: var(--text-secondary);
}

.product-info .value.cost {
    color: var(--danger);
}

.product-info .value.profit {
    color: var(--success);
}

.product-status {
    margin-top: 15px;
    padding: 8px 12px;
    border-radius: 6px;
    text-align: center;
    font-size: 13px;
}

.product-status.hot {
    background: rgba(233, 69, 96, 0.2);
    color: var(--accent);
}

.product-status.low {
    background: rgba(255, 152, 0, 0.2);
    color: var(--warning);
}

/* Stock Summary */
.stock-summary {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.stock-card {
    background: var(--bg-card);
    padding: 25px;
    border-radius: 12px;
    flex: 1;
    text-align: center;
}

.stock-card h4 {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.big-number {
    font-size: 32px;
    font-weight: bold;
}

.big-number.warning {
    color: var(--warning);
}

/* Finance Summary */
.finance-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.fin-card {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.fin-card h4 {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.fin-card p {
    font-size: 22px;
    font-weight: bold;
}

.fin-card p.green { color: var(--success); }
.fin-card p.red { color: var(--danger); }

.fin-card.highlight {
    background: linear-gradient(135deg, #1a472a 0%, #0d2818 100%);
}

.fin-card.highlight p {
    color: var(--success);
}

/* Profit Cards */
.profit-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.profit-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border);
}

.profit-card h4 {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.profit-card p {
    font-size: 28px;
    font-weight: bold;
    color: var(--success);
}

/* Line Total */
.line-total {
    background: var(--bg-secondary);
    padding: 15px 20px;
    border-radius: 8px;
    margin: 15px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.line-total span:last-child {
    font-size: 20px;
    font-weight: bold;
}

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

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

/* Buttons */
.btn-primary {
    padding: 12px 25px;
    background: var(--accent);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: #d63550;
}

.btn-secondary {
    padding: 12px 25px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: var(--bg-card);
}

.btn-delete {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    padding: 5px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 6px;
}

/* Alerts */
.alerts-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.alert-item {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 10px;
    display: flex;
    gap: 15px;
    border-left: 4px solid var(--border);
}

.alert-item.warning { border-left-color: var(--warning); }
.alert-item.danger { border-left-color: var(--danger); }
.alert-item.success { border-left-color: var(--success); }
.alert-item.info { border-left-color: #2196f3; }

.alert-icon {
    font-size: 24px;
}

.alert-content h4 {
    font-size: 15px;
    margin-bottom: 5px;
}

.alert-content p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Settings */
.settings-sections {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.settings-section {
    background: var(--bg-card);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.settings-section h3 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--accent);
}

.info-row {
    display: flex;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

.info-row .label {
    width: 200px;
    color: var(--text-secondary);
}

.info-row .value {
    flex: 1;
}

/* Export Actions */
.export-actions {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 16px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-content h2 {
    font-size: 20px;
    margin-bottom: 25px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-top: 25px;
}

/* Hidden */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    #dashboard {
        flex-direction: column;
    }
    
    .menu {
        display: flex;
        overflow-x: auto;
        padding: 10px;
    }
    
    .menu li {
        padding: 10px 15px;
        white-space: nowrap;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
}