:root {
    --bg-color: #0d1117;
    --panel-bg: rgba(22, 27, 34, 0.7);
    --panel-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-glow: rgba(88, 166, 255, 0.3);
    --success: #3fb950;
    --danger: #f85149;
    --danger-glow: rgba(248, 81, 73, 0.3);
    
    --purple: #bf87ff;
    --orange: #ff7b72;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(88, 166, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(191, 135, 255, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.hidden {
    display: none !important;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

header.glass-panel {
    padding: 24px;
    text-align: center;
}

header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(to right, var(--accent), var(--purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header .subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    margin-top: 4px;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.kpi-card {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.kpi-card.highlight {
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
}

.kpi-card h3 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.kpi-value {
    font-size: 2rem;
    font-weight: 700;
}

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

.goals-panel {
    display: flex;
    gap: 20px;
    padding: 20px;
    flex-wrap: wrap;
}

.goal-item {
    flex: 1;
    min-width: 250px;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
}

.goal-icon {
    font-size: 2rem;
}

.goal-details h4 {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.goal-details p {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 500;
}

.charts-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.chart-wrapper {
    padding: 24px;
}

.chart-wrapper h2 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.canvas-container {
    position: relative;
    height: 350px;
    width: 100%;
}

.loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    min-height: 400px;
    gap: 20px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(88, 166, 255, 0.2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.error-panel {
    padding: 40px;
    text-align: center;
    border-color: var(--danger);
    box-shadow: 0 0 30px var(--danger-glow);
}

.error-panel h2 {
    color: var(--danger);
    margin-bottom: 12px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .app-container {
        padding: 12px;
        gap: 16px;
    }
    
    .kpi-grid {
        grid-template-columns: 1fr 1fr;
    }

    .canvas-container {
        height: 250px;
    }

    .chart-wrapper {
        padding: 16px;
    }
}