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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

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

.header h1 {
    color: #4a5568;
    font-size: 2rem;
    font-weight: 700;
}

.header h1 i {
    color: #667eea;
    margin-right: 10px;
}

.date-filter {
    display: flex;
    gap: 10px;
    align-items: center;
}

.date-input {
    padding: 10px 15px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.date-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.filter-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* Loading */
.loading {
    text-align: center;
    padding: 60px 20px;
    color: white;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* KPI Section */
.kpi-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.kpi-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.kpi-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.kpi-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.kpi-card.revenue .kpi-icon { background: linear-gradient(135deg, #48bb78, #38a169); }
.kpi-card.orders .kpi-icon { background: linear-gradient(135deg, #4299e1, #3182ce); }
.kpi-card.items .kpi-icon { background: linear-gradient(135deg, #ed8936, #dd6b20); }
.kpi-card.ticket .kpi-icon { background: linear-gradient(135deg, #9f7aea, #805ad5); }

.kpi-content h3 {
    color: #718096;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-value {
    font-size: 28px;
    font-weight: 700;
    color: #2d3748;
}

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

.chart-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.chart-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

.chart-card.full-width {
    grid-column: 1 / -1;
}

.chart-card h3 {
    color: #4a5568;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.chart-card h3 i {
    color: #667eea;
}

/* Chart Content */
.chart-content {
    min-height: 200px;
}

.bar-chart {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

.bar-label {
    min-width: 120px;
    font-weight: 600;
    color: #4a5568;
    font-size: 14px;
}

.bar-container {
    flex: 1;
    height: 30px;
    background: #f7fafc;
    border-radius: 15px;
    overflow: hidden;
    position: relative;
}

.bar-fill {
    height: 100%;
    border-radius: 15px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: width 0.8s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 10px;
}

.bar-value {
    color: white;
    font-weight: 600;
    font-size: 12px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Orders Table */
.orders-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

.orders-table th,
.orders-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.orders-table th {
    background: #f7fafc;
    font-weight: 600;
    color: #4a5568;
    font-size: 14px;
}

.orders-table tr:hover {
    background: #f7fafc;
}

.order-value {
    font-weight: 600;
    color: #48bb78;
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    margin-top: 40px;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
    
    .date-filter {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .kpi-section {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .kpi-card {
        padding: 20px;
    }
    
    .kpi-value {
        font-size: 24px;
    }
    
    .bar-label {
        min-width: 80px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .kpi-section {
        grid-template-columns: 1fr;
    }
    
    .date-filter {
        width: 100%;
    }
    
    .date-input {
        flex: 1;
    }
    
    .orders-table {
        font-size: 12px;
    }
    
    .orders-table th,
    .orders-table td {
        padding: 8px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chart-card {
    animation: fadeInUp 0.6s ease forwards;
}

.kpi-card {
    animation: fadeInUp 0.6s ease forwards;
}