/**
 * Atari RL Training Dashboard Styles
 * Rainbow DQN Edition - Dark theme with charts and controls
 */

/* ============== CSS Variables ============== */

:root {
    --bg-primary: #0a0f1a;
    --bg-secondary: #111827;
    --bg-card: #1a2234;
    --bg-hover: #243044;
    --bg-input: #0d1421;
    
    --accent-cyan: #06b6d4;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-yellow: #f59e0b;
    --accent-purple: #8b5cf6;
    --accent-pink: #ec4899;
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --border-color: #2d3a4f;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    
    --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
}


/* ============== Base Styles ============== */

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

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}


/* ============== App Layout ============== */

.app {
    max-width: 1800px;
    margin: 0 auto;
    padding: 16px;
    min-height: 100vh;
}


/* ============== Header ============== */

.header {
    padding: 20px 24px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-card) 100%);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

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

.header-left {
    display: flex;
    align-items: baseline;
    gap: 16px;
}

.header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header .subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
}


/* ============== Connection Status ============== */

.connection-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.connection-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.connection-status.connected {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.connection-status.disconnected {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.connected .status-dot {
    background: var(--accent-green);
}

.disconnected .status-dot {
    background: var(--accent-red);
}

.device-info {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-card);
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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


/* ============== Main Content Grid ============== */

.main-content {
    display: grid;
    grid-template-columns: 320px 1fr 280px;
    gap: 20px;
}

@media (max-width: 1400px) {
    .main-content {
        grid-template-columns: 300px 1fr;
    }
    .right-panel {
        grid-column: span 2;
    }
}

@media (max-width: 900px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    .right-panel {
        grid-column: span 1;
    }
}

.left-panel, .center-panel, .right-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
}


/* ============== Control Panel ============== */

.control-panel {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 20px;
}

.control-panel h2 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.control-group {
    margin-bottom: 16px;
}

.control-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.game-select, .model-select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: border-color 0.2s;
}

.game-select:hover:not(:disabled),
.model-select:hover:not(:disabled) {
    border-color: var(--accent-cyan);
}

.game-select:disabled,
.model-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}


/* ============== Model Selector ============== */

.model-selector {
    margin-bottom: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.model-selector-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.model-selector h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.btn-toggle-list {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-toggle-list:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-toggle-list:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.checkpoint-info {
    margin-top: 8px;
    padding: 8px 12px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--accent-green);
    border-radius: var(--border-radius-sm);
    color: var(--accent-green);
    font-size: 0.85rem;
    font-weight: 500;
}

.checkpoint-list {
    margin-top: 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    max-height: 200px;
    overflow-y: auto;
}

.checkpoint-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}

.checkpoint-item:last-child {
    border-bottom: none;
}

.checkpoint-item:hover {
    background: var(--bg-hover);
}

.checkpoint-item.best {
    background: rgba(139, 92, 246, 0.1);
}

.checkpoint-details {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
}

.checkpoint-episode {
    color: var(--text-primary);
    font-weight: 500;
}

.checkpoint-reward {
    color: var(--text-secondary);
}

.checkpoint-badge {
    font-size: 0.9rem;
}

.btn-delete-checkpoint {
    background: transparent;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    transition: all 0.2s;
    opacity: 0.6;
}

.btn-delete-checkpoint:hover:not(:disabled) {
    background: rgba(239, 68, 68, 0.2);
    opacity: 1;
}

.btn-delete-checkpoint:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}


/* ============== Buttons ============== */

.button-group {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
}

.btn {
    padding: 12px 16px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.btn-start {
    background: var(--accent-green);
    color: white;
}

.btn-start.btn-resume {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
}

.btn-start:hover:not(:disabled) {
    background: #0ea472;
    transform: translateY(-1px);
}

.btn-start.btn-resume:hover:not(:disabled) {
    background: linear-gradient(135deg, #0891b2, #0ea472);
}

.btn-stop {
    background: var(--accent-red);
    color: white;
}

.btn-stop:hover:not(:disabled) {
    background: #dc2626;
    transform: translateY(-1px);
}

.btn-save {
    background: var(--accent-purple);
    color: white;
}

.btn-save:hover:not(:disabled) {
    background: #7c3aed;
    transform: translateY(-1px);
}

.btn-load {
    margin-top: 8px;
    width: 100%;
    background: var(--accent-cyan);
    color: white;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}


/* ============== Speed Controls ============== */

.speed-controls {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 16px;
}

.speed-controls h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.control-row {
    margin-bottom: 12px;
}

.control-row:last-child {
    margin-bottom: 0;
}

.control-row label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.speed-buttons {
    display: flex;
    gap: 8px;
}

.speed-btn {
    flex: 1;
    padding: 8px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.speed-btn:hover {
    border-color: var(--accent-cyan);
    color: var(--text-primary);
}

.speed-btn.active {
    background: var(--accent-cyan);
    border-color: var(--accent-cyan);
    color: white;
}

.speed-slider {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-input);
    border-radius: 3px;
    outline: none;
}

.speed-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent-cyan);
    border-radius: 50%;
    cursor: pointer;
}


/* ============== Stats Grid ============== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    padding: 14px;
    text-align: center;
}

.stat-card.highlight {
    border-color: var(--accent-yellow);
    background: rgba(245, 158, 11, 0.1);
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 2px;
}

.stat-card.highlight .stat-value {
    color: var(--accent-yellow);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}


/* ============== Game Section ============== */

.game-section {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 20px;
}

.game-section h2 {
    font-size: 1rem;
    margin-bottom: 12px;
}


/* ============== Game Canvas ============== */

.game-canvas-container {
    position: relative;
    background: #000;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    border: 2px solid var(--border-color);
    transition: border-color 0.3s;
}

.game-canvas-container:has(canvas.active) {
    border-color: var(--accent-green);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.2);
}

canvas {
    display: block;
    width: 100%;
    max-height: 360px;
    object-fit: contain;
    background: #000;
}

.canvas-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.overlay-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

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


/* ============== Charts Panel ============== */

.charts-panel {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 16px;
}

.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.tab {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.tab:hover {
    border-color: var(--accent-cyan);
    color: var(--text-primary);
}

.tab.active {
    background: var(--accent-cyan);
    border-color: var(--accent-cyan);
    color: white;
}

.charts-content {
    min-height: 200px;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.chart-container {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    padding: 12px;
    height: 220px;
}

.chart-container h4 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.chart-container canvas {
    max-height: 180px !important;
}


/* ============== Leaderboard ============== */

.leaderboard {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 16px;
}

.leaderboard h3 {
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.leaderboard table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.leaderboard th, .leaderboard td {
    padding: 8px 6px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.leaderboard th {
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.75rem;
}

.leaderboard .score {
    color: var(--accent-yellow);
    font-weight: 600;
    font-family: var(--font-mono);
}

.leaderboard .empty-message {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
    padding: 20px;
}


/* ============== Activity Log ============== */

.activity-log {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 16px;
    flex: 1;
}

.activity-log h3 {
    font-size: 0.9rem;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.log-container {
    max-height: 400px;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.log-entry {
    padding: 6px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
}

.log-entry:last-child {
    border-bottom: none;
}

.log-time {
    color: var(--text-muted);
    flex-shrink: 0;
    font-size: 0.75rem;
}

.log-message {
    color: var(--text-secondary);
    word-break: break-word;
}

.log-entry.success .log-message {
    color: var(--accent-green);
}

.log-entry.error .log-message {
    color: var(--accent-red);
}

.log-entry.warning .log-message {
    color: var(--accent-yellow);
}


/* ============== Scrollbar ============== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}


/* ============== Responsive Adjustments ============== */

@media (max-width: 600px) {
    .header h1 {
        font-size: 1.4rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .header-left {
        flex-direction: column;
        gap: 4px;
    }
    
    .button-group {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}