/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --background: #ecf0f1;
    --card-background: #ffffff;
    --text-color: #2c3e50;
    --border-color: #bdc3c7;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background);
    color: var(--text-color);
    line-height: 1.6;
}

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

/* Header */
header {
    background-color: var(--card-background);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    color: var(--primary-color);
    font-size: 2rem;
}

.last-update {
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* Sections */
section {
    background-color: var(--card-background);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

section h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.5rem;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 10px;
}

section h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

/* Bot Status Grid */
.bot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.bot-card {
    background: linear-gradient(135deg, var(--secondary-color), #2980b9);
    color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

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

.bot-card.offline {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
}

.bot-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.bot-name {
    font-size: 1.3rem;
    font-weight: bold;
}

.bot-status-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    background-color: rgba(255, 255, 255, 0.3);
}

.bot-stats {
    font-size: 0.9rem;
}

.bot-stats div {
    margin: 8px 0;
    display: flex;
    justify-content: space-between;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-card {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 8px;
    border-left: 4px solid var(--secondary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: #7f8c8d;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-value.positive {
    color: var(--success-color);
}

.stat-value.negative {
    color: var(--danger-color);
}

/* Charts */
.chart-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.chart-container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.chart-container canvas {
    max-height: 300px;
}

/* Tables */
.table-container {
    margin-bottom: 30px;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

thead {
    background-color: var(--primary-color);
    color: white;
}

th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

tbody tr:hover {
    background-color: #f8f9fa;
}

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

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .chart-row {
        grid-template-columns: 1fr;
    }

    .bot-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    header {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

    header h1 {
        font-size: 1.5rem;
    }
}

/* Loading state */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Utility classes */
.text-success {
    color: var(--success-color) !important;
}

.text-danger {
    color: var(--danger-color) !important;
}

.text-warning {
    color: var(--warning-color) !important;
}