/* Skill Analytics Dashboard - Dark Theme */

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --text-muted: #6b6b6b;
    --accent-primary: #e94560;
    --accent-secondary: #0f9b8e;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --border-color: #2a2a4a;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --radius: 8px;
    --radius-lg: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Header */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header-version {
    font-size: 0.875rem;
    color: var(--text-muted);
    background-color: var(--bg-tertiary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Buttons */
.btn {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.btn:hover {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.btn-primary {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.btn-primary:hover {
    background-color: #d63850;
}

.btn-small {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-completed, .status-connected {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.status-in_progress, .status-pending {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.status-failed, .status-error {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--error);
}

/* Main Content */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    font-size: 2rem;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius);
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    font-weight: 400;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Secondary Stats */
.secondary-stats {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.stat-pill {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pill-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.pill-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-secondary);
}

/* Section Titles */
.section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* Chart Section */
.chart-section {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.chart-controls {
    display: flex;
    gap: 0.75rem;
}

.select-control {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    cursor: pointer;
}

.select-control:focus {
    outline: none;
    border-color: var(--accent-primary);
}

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

/* Table Section */
.table-section {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    background-color: var(--bg-tertiary);
}

.data-table th:first-child {
    border-radius: var(--radius) 0 0 0;
}

.data-table th:last-child {
    border-radius: 0 var(--radius) 0 0;
}

.data-table tbody tr {
    transition: background-color 0.2s ease;
}

.data-table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

.data-table td {
    font-size: 0.875rem;
}

.loading-cell {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem;
}

/* Error Container */
.error-container {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 200;
}

.error-container.hidden {
    display: none;
}

.error-content {
    background-color: var(--error);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-lg);
}

.error-icon {
    font-size: 1.25rem;
}

#error-dismiss {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: transparent;
    color: white;
}

#error-dismiss:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 1rem 2rem;
    margin-top: 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
    }

    .main-content {
        padding: 1rem;
    }

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

    .stat-card {
        padding: 1rem;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .secondary-stats {
        flex-direction: column;
    }

    .chart-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .chart-controls {
        width: 100%;
    }

    .select-control {
        flex: 1;
    }

    .chart-container {
        height: 250px;
    }

    .data-table th,
    .data-table td {
        padding: 0.625rem 0.5rem;
        font-size: 0.75rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header-title {
        font-size: 1.25rem;
    }

    .stat-icon {
        display: none;
    }

    .chart-controls {
        flex-direction: column;
    }
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.text-success {
    color: var(--success);
}

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

.text-error {
    color: var(--error);
}