/* High contrast dark theme for accessibility */
:root {
    --bg-dark: #121212;
    --surface: #1e1e1e;
    --card: #2d2d2d;
    --primary: #1a73e8;
    --primary-hover: #4285f4;
    --success: #4caf50;
    --danger: #f44336;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --border: #444;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    font-size: 18px;
    line-height: 1.5;
}

.container {
    max-width: 500px;
    margin: 0 auto;
    padding: 24px;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

h1 {
    font-size: 28px;
    font-weight: 700;
}

h2 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.status-bar {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--danger);
}

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

.status-dot.connecting {
    background: #ff9800;
    animation: pulse 1s infinite;
}

.slider-input {
    width: 70px;
    padding: 12px 8px;
    font-size: 20px;
    text-align: center;
    background: var(--surface);
    border: 2px solid var(--primary);
    border-radius: 8px;
    color: var(--text);
    appearance: textfield;
    -moz-appearance: textfield;
}

.slider-input::-webkit-outer-spin-button,
.slider-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
}

/* Header */
.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.menu-btn {
    background: none;
    border: none;
    color: var(--text);
    font-size: 24px;
    padding: 4px 8px;
    cursor: pointer;
    margin-left: 12px;
}

.menu-btn:hover {
    color: var(--primary);
}

/* Compact Controls */
.controls-compact {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.control-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-label {
    width: 50px;
    font-size: 12px;
    color: var(--text-secondary);
    text-align: right;
}

.control-value {
    width: 30px;
    font-size: 14px;
    text-align: center;
}

.control-input {
    width: 50px;
    padding: 6px 4px;
    font-size: 14px;
    text-align: center;
    background: var(--surface);
    border: 1px solid var(--primary);
    border-radius: 4px;
    color: var(--text);
    appearance: textfield;
    -moz-appearance: textfield;
}

.control-input::-webkit-outer-spin-button,
.control-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
}

.controls-compact .slider {
    flex: 1;
    height: 28px;
}

/* Settings Panel */
.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.settings-header h3 {
    margin: 0;
}

.settings-section {
    padding: 16px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.settings-section:last-child {
    border-bottom: none;
}

.settings-section h4 {
    margin: 0 0 8px 0;
    font-size: 16px;
}

.settings-note {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

/* Mobile Optimization */
@media (max-width: 480px) {
    .container {
        padding: 12px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .panel {
        padding: 16px;
    }
    
    .slider-row {
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .slider-row label {
        width: 100%;
        margin-bottom: 4px;
    }
    
    .slider {
        flex: 1;
        min-width: 120px;
        height: 44px;
    }
    
    .slider-input {
        width: 80px;
        padding: 14px 10px;
        font-size: 22px;
    }
    
    .preset-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }
    
    .preset-btn {
        padding: 14px 8px;
        font-size: 12px;
    }
    
    .action-buttons {
        gap: 12px;
    }
    
    .btn-large {
        padding: 18px 24px;
        font-size: 20px;
    }
}

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

/* Panels */
.panel {
    background: var(--surface);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
}

.hidden {
    display: none !important;
}

/* Inputs */
.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 16px;
}

input[type="text"] {
    width: 100%;
    padding: 16px;
    font-size: 18px;
    background: var(--card);
    border: 2px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    outline: none;
}

input[type="text"]:focus {
    border-color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 56px;
}

.btn:active {
    transform: scale(0.98);
}

.btn-large {
    width: 100%;
    font-size: 22px;
    min-height: 64px;
}

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

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

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #66bb6a;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #ef5350;
}

.btn-secondary {
    background: var(--card);
    color: var(--text-primary);
    border: 2px solid var(--border);
    flex: 1;
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border);
    width: 100%;
}

.btn-outline:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

/* Control Groups */
.control-group {
    margin-bottom: 32px;
}

.control-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.control-header label {
    font-size: 18px;
    color: var(--text-secondary);
}

.value-display {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
}

/* Slider */
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 12px;
    border-radius: 6px;
    background: var(--card);
    outline: none;
    margin-bottom: 16px;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
}

.slider::-moz-range-thumb {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: none;
}

.btn-row {
    display: flex;
    gap: 12px;
}

/* Action Buttons */
.action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

/* Feedback */
.feedback {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card);
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 16px;
    max-width: 90%;
    text-align: center;
    border: 2px solid var(--border);
    z-index: 100;
}

.feedback.success {
    border-color: var(--success);
    color: var(--success);
}

.feedback.error {
    border-color: var(--danger);
    color: var(--danger);
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Focus styles */
button:focus, input:focus {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* Stroke Sliders */
.stroke-sliders {
    margin-bottom: 24px;
}

.slider-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.slider-row label {
    flex: 0 0 200px;
    text-align: right;
    color: var(--text-secondary);
    font-size: 16px;
}

.slider-row .slider {
    flex: 1;
    margin-bottom: 0;
}

.slider-value {
    flex: 0 0 40px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Orange slider variant */
.slider-orange::-webkit-slider-thumb {
    background: #ff9800;
}

.slider-orange::-moz-range-thumb {
    background: #ff9800;
}

/* Preset Grid */
.preset-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.preset-btn {
    background: transparent;
    border: 2px solid #ff9800;
    color: #ff9800;
    padding: 14px 8px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 48px;
}

.preset-btn:hover {
    background: rgba(255, 152, 0, 0.15);
}

.preset-btn:active {
    background: rgba(255, 152, 0, 0.3);
    transform: scale(0.98);
}

.preset-btn.active {
    background: #ff9800;
    color: #000;
}

/* Debug Panel */
.debug-panel {
    background: #1a1a1a;
    border: 1px solid #333;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 13px;
}

.debug-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.debug-header h3 {
    margin: 0;
    font-size: 14px;
    color: #888;
    text-transform: uppercase;
}

.btn-small {
    padding: 4px 12px;
    font-size: 12px;
    background: #333;
    border: 1px solid #555;
    color: #aaa;
    border-radius: 4px;
    cursor: pointer;
}

.btn-small:hover {
    background: #444;
}

.debug-state {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 12px;
    background: #222;
    border-radius: 8px;
    margin-bottom: 12px;
}

.debug-state div {
    color: #aaa;
}

.debug-state span {
    color: #4fc3f7;
}

.debug-log {
    max-height: 200px;
    overflow-y: auto;
    background: #0d0d0d;
    border-radius: 8px;
    padding: 8px;
}

.debug-log .log-entry {
    padding: 4px 0;
    border-bottom: 1px solid #222;
    word-break: break-all;
}

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

.debug-log .log-time {
    color: #666;
    margin-right: 8px;
}

.debug-log .log-method {
    color: #81c784;
    font-weight: bold;
    margin-right: 8px;
}

.debug-log .log-endpoint {
    color: #fff;
}

.debug-log .log-body {
    color: #ffb74d;
    margin-left: 16px;
    display: block;
}

.debug-log .log-response {
    color: #4fc3f7;
    margin-left: 16px;
    display: block;
}

.debug-log .log-error {
    color: #ef5350;
}

/* Safety Settings */
.safety-settings {
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid rgba(244, 67, 54, 0.3);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.safety-settings h3 {
    margin: 0 0 12px 0;
    font-size: 16px;
    color: #f44336;
}

.safety-note {
    margin: 8px 0 0 0;
    font-size: 13px;
    color: #888;
}

/* Red slider for safety */
.slider-red::-webkit-slider-thumb {
    background: #f44336;
}

.slider-red::-moz-range-thumb {
    background: #f44336;
}

/* Experiment Section */
.experiment-section {
    background: rgba(156, 39, 176, 0.1);
    border: 1px solid rgba(156, 39, 176, 0.3);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.experiment-section h3 {
    margin: 0 0 8px 0;
    font-size: 16px;
    color: #ba68c8;
}

.experiment-note {
    margin: 0 0 12px 0;
    font-size: 13px;
    color: #888;
}

.btn-experiment {
    background: rgba(156, 39, 176, 0.2);
    border: 2px solid #9c27b0;
    color: #ba68c8;
    width: 100%;
}

.btn-experiment:hover {
    background: rgba(156, 39, 176, 0.3);
}

/* Speed Control Section */
.speed-control-section {
    background: rgba(33, 150, 243, 0.1);
    border: 1px solid rgba(33, 150, 243, 0.3);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.speed-control-section h3 {
    margin: 0 0 12px 0;
    font-size: 16px;
    color: #64b5f6;
}

.control-note {
    margin: 8px 0 0 0;
    font-size: 13px;
    color: #888;
}

/* Blue slider */
.slider-blue::-webkit-slider-thumb {
    background: #2196f3;
}

.slider-blue::-moz-range-thumb {
    background: #2196f3;
}