:root {
    /* Light Theme Variables */
    --bg-color: #f4f7fe;
    --card-bg: #ffffff;
    --text-primary: #2b3674;
    --text-secondary: #a3aed1;
    --border-color: #e2e8f0;
    --primary-color: #4318ff;
    --primary-hover: #3311db;
    --success-color: #05cd99;
    --danger-color: #ee5d50;
    --warning-color: #ffce20;
    --info-color: #39b8ff;
    --shadow: 0 10px 20px rgba(112, 144, 176, 0.08);
    --transition: all 0.3s ease;
    --font-family: 'Inter', sans-serif;
}

[data-theme="dark"] {
    /* Dark Theme Variables */
    --bg-color: #0b1437;
    --card-bg: #111c44;
    --text-primary: #ffffff;
    --text-secondary: #8f9bba;
    --border-color: #2b3674;
    --primary-color: #7551ff;
    --primary-hover: #613ee6;
    --shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    transition: var(--transition);
    line-height: 1.6;
}

.dashboard-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 20px 30px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    transition: var(--transition);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

/* Buttons */
button {
    font-family: var(--font-family);
    cursor: pointer;
    border: none;
    border-radius: 10px;
    transition: var(--transition);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
    padding: 10px 20px;
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 8px 16px;
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-size: 1.2rem;
}

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

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    transition: var(--transition);
}

/* Filters */
.filters-section {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
    min-width: 150px;
}

.filter-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.filter-group input, 
.filter-group select {
    padding: 10px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    outline: none;
    transition: var(--transition);
}

.filter-group input:focus, 
.filter-group select:focus {
    border-color: var(--primary-color);
}

.filter-actions {
    flex: 0;
}

/* KPIs */
.kpis-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.kpi-card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: var(--transition);
}

.kpi-card:hover {
    transform: translateY(-5px);
}

.kpi-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
}

.sales-icon { background-color: var(--primary-color); }
.profit-icon { background-color: var(--success-color); }
.orders-icon { background-color: var(--info-color); }
.qty-icon { background-color: var(--warning-color); }
.aov-icon { background-color: var(--danger-color); }

.kpi-details h3 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 5px;
}

.kpi-details p {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Insights */
.insights-section h2 {
    font-size: 1.2rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
}

.insights-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.insights-list li {
    background-color: var(--bg-color);
    padding: 15px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.insight-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.insight-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Charts */
.charts-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.chart-card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.chart-large {
    grid-column: span 2;
}

.chart-card h3 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

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

.table-header h2 {
    font-size: 1.2rem;
}

.table-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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

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

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

th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
}

td {
    font-size: 0.95rem;
}

tbody tr {
    transition: var(--transition);
}

tbody tr:hover {
    background-color: var(--bg-color);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#page-info {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Responsive */
@media (max-width: 992px) {
    .charts-section {
        grid-template-columns: 1fr;
    }
    
    .chart-large {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .kpis-section {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 576px) {
    .kpis-section {
        grid-template-columns: 1fr;
    }
}