:root {
    --bg-color: #0b0e14;
    --card-bg: rgba(23, 28, 41, 0.7);
    --card-border: rgba(255, 255, 255, 0.08);
    --primary-accent: #fbbf24; /* Solar Amber */
    --secondary-accent: #3b82f6; /* Blue */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --success: #10b981;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(251, 191, 36, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(59, 130, 246, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    color: var(--primary-accent);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--success);
    background: rgba(16, 185, 129, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.dot {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--success);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Cards */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

#card-battery .icon-wrapper { color: #3b82f6; }
#card-solar .icon-wrapper { color: #fbbf24; }
#card-controller .icon-wrapper { color: #10b981; }

.stat-content h2 {
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.value-group {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
}

.value {
    font-size: 2rem;
    font-weight: 600;
    line-height: 1;
}

.unit {
    font-size: 1rem;
    color: var(--text-secondary);
}

.sub-value, .details-row {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.details-row {
    display: flex;
    gap: 1rem;
}

/* Charts Section */
.charts-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.time-selector {
    background: var(--card-bg);
    padding: 0.25rem;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    display: flex;
}

.time-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s;
}

.time-btn.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-weight: 600;
}

.time-btn:hover:not(.active) {
    color: var(--text-primary);
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.chart-card {
    min-height: 300px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.chart-card h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
}

canvas {
    width: 100% !important;
    height: auto !important;
    flex: 1;
}

@media (max-width: 768px) {
    .app-container {
        padding: 1rem;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .card {
        padding: 1rem;
    }
}