:root {
    --bg-base: #0f172a;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-base);
    background-image: 
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.15) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-main);
    min-height: 100vh;
}

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

/* Glassmorphism Utilities */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    margin-bottom: 30px;
}

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

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

.logo-area h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo-area p {
    font-size: 0.9rem;
    color: var(--accent-orange);
    font-weight: 500;
}

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

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

.date-picker-group label {
    font-weight: 500;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
}

.glass-input {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 10px 15px;
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.glass-input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.btn-icon {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--accent-blue);
    width: 42px;
    height: 42px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1.2rem;
}

.btn-icon:hover {
    background: var(--accent-blue);
    color: white;
}

/* Loader */
.loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 100px 0;
    gap: 20px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.hidden {
    display: none !important;
}

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

.kpi-card {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    border-left: 4px solid var(--accent);
    transition: transform 0.2s ease;
}

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

.kpi-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--accent);
}

.kpi-data h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 5px;
}

.kpi-data p {
    font-size: 1.8rem;
    font-weight: 700;
}

/* Main Grid */
.main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.list-section, .chart-section {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.list-section h2, .chart-section h2 {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge {
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

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

.table-container::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
.table-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th {
    text-align: left;
    padding: 12px 15px;
    color: var(--text-muted);
    font-weight: 500;
    position: sticky;
    top: 0;
    background: var(--bg-base);
    z-index: 10;
}

td {
    padding: 12px 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

tr:last-child td {
    border-bottom: none;
}

tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

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

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

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 600;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}

.tab-btn.active {
    background: var(--accent-blue);
    color: white;
}

.tab-content {
    display: none;
}

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

/* Responsiveness */
@media (max-width: 900px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    header {
        flex-direction: column;
        gap: 20px;
        align-items: flex-start;
    }
    
    .controls {
        width: 100%;
        justify-content: space-between;
    }
    
    .date-picker-group {
        flex: 1;
    }
    
    #dateFilter {
        width: 100%;
    }
}