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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: #f5f5f5;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
    font-size: 2rem;
}

h3 {
    color: #555;
    margin-bottom: 10px;
    font-size: 1rem;
}

.controls {
    display: flex;
    gap: 30px;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 8px;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.control-group label {
    color: #555;
    font-size: 0.9rem;
}

.control-group input[type="range"] {
    width: 150px;
    cursor: pointer;
}

.control-group input[type="color"] {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    padding: 0;
}

.canvas-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

#drawingCanvas {
    border: 2px solid #ddd;
    border-radius: 8px;
    background-color: white;
    cursor: crosshair;
    touch-action: none;
}

#drawingCanvas:hover {
    border-color: #007bff;
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 25px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-primary {
    background-color: #007bff;
    color: white;
}

.btn-primary:hover {
    background-color: #0056b3;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #545b62;
}

.btn-success {
    background-color: #28a745;
    color: white;
}

.btn-success:hover {
    background-color: #1e7e34;
}

.btn-download {
    background-color: #17a2b8;
    color: white;
}

.btn-download:hover:not(:disabled) {
    background-color: #117a8b;
}

.btn-record {
    background-color: #dc3545;
    color: white;
    min-width: 150px;
}

.btn-record:hover {
    background-color: #c82333;
}

.btn-record.recording {
    background-color: #28a745;
    animation: pulse 1s infinite;
}

.btn-record.recording:hover {
    background-color: #1e7e34;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.recording-controls {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: center;
    margin-bottom: 15px;
    padding: 15px;
    background-color: #fff3cd;
    border-radius: 8px;
    border: 2px solid #ffc107;
}

.recording-controls.is-recording {
    background-color: #d4edda;
    border-color: #28a745;
}

#drawingCanvas.recording {
    border-color: #dc3545;
    box-shadow: 0 0 10px rgba(220, 53, 69, 0.5);
}

.frames-section {
    margin-bottom: 25px;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 8px;
}

.frames-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    min-height: 80px;
    padding: 10px;
    background-color: white;
    border: 2px dashed #ddd;
    border-radius: 8px;
}

.frame-thumbnail {
    position: relative;
    width: 80px;
    height: 60px;
    border: 2px solid #ddd;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s ease;
}

.frame-thumbnail:hover {
    border-color: #dc3545;
    transform: scale(1.05);
}

.frame-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.frame-thumbnail .frame-number {
    position: absolute;
    bottom: 2px;
    left: 2px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
}

.frame-thumbnail .delete-hint {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(220, 53, 69, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.frame-thumbnail:hover .delete-hint {
    opacity: 1;
}

.gif-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
    margin-bottom: 20px;
}

.gif-buttons {
    display: flex;
    gap: 15px;
}

.preview-section {
    text-align: center;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
    margin-bottom: 20px;
}

#gifPreview {
    max-width: 100%;
    border: 2px solid #ddd;
    border-radius: 8px;
    margin-top: 10px;
}

.status-message {
    text-align: center;
    padding: 10px;
    border-radius: 8px;
    font-weight: 500;
    min-height: 20px;
}

.status-message.info {
    background-color: #d1ecf1;
    color: #0c5460;
}

.status-message.success {
    background-color: #d4edda;
    color: #155724;
}

.status-message.error {
    background-color: #f8d7da;
    color: #721c24;
}

/* ============= STROKE MODE STYLES ============= */

.mode-toggle {
    display: flex;
    justify-content: center;
    margin-bottom: 15px;
    padding: 10px;
    background-color: #e3f2fd;
    border-radius: 8px;
    border: 2px solid #2196f3;
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: 500;
    color: #1976d2;
}

.toggle-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.toggle-text {
    font-size: 1rem;
}

.stroke-mode-controls {
    padding: 20px;
    background-color: #e8f5e9;
    border-radius: 8px;
    border: 2px solid #4caf50;
    margin-bottom: 15px;
}

.stroke-mode-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.stroke-mode-header h3 {
    color: #2e7d32;
    margin: 0;
}

.character-input {
    padding: 8px 12px;
    font-size: 1.2rem;
    border: 2px solid #4caf50;
    border-radius: 6px;
    width: 100px;
    text-align: center;
}

.stroke-settings {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-bottom: 15px;
    padding: 10px;
    background-color: #f1f8e9;
    border-radius: 6px;
}

.strokes-section {
    margin-bottom: 15px;
}

.strokes-section h4 {
    color: #388e3c;
    margin-bottom: 10px;
}

.stroke-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 50px;
    padding: 10px;
    background-color: white;
    border: 2px dashed #a5d6a7;
    border-radius: 6px;
}

.no-strokes {
    color: #81c784;
    font-style: italic;
    width: 100%;
    text-align: center;
    padding: 10px;
}

.stroke-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background-color: #c8e6c9;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid #a5d6a7;
}

.stroke-number {
    font-weight: bold;
    color: #2e7d32;
    background-color: white;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

.stroke-info {
    color: #555;
}

.stroke-color {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 1px solid #666;
}

.stroke-delete {
    background: #f44336;
    color: white;
    border: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: background-color 0.2s;
}

.stroke-delete:hover {
    background: #d32f2f;
}

.stroke-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.stroke-actions .btn {
    min-width: 120px;
}

/* Canvas styling when in stroke mode */
#drawingCanvas.stroke-mode {
    border-color: #4caf50;
    box-shadow: 0 0 10px rgba(76, 175, 80, 0.3);
}

/* Responsive adjustments */
@media (max-width: 650px) {
    .container {
        padding: 15px;
    }

    #drawingCanvas {
        width: 100%;
        height: 300px;
    }

    .controls {
        flex-direction: column;
        gap: 15px;
    }

    .action-buttons {
        flex-wrap: wrap;
    }

    .btn {
        padding: 10px 18px;
        font-size: 0.9rem;
    }

    .gif-buttons {
        flex-direction: column;
        width: 100%;
    }

    .gif-buttons .btn {
        width: 100%;
    }

    .stroke-mode-header {
        flex-direction: column;
        text-align: center;
    }

    .stroke-settings {
        flex-direction: column;
        align-items: stretch;
    }

    .stroke-actions {
        flex-direction: column;
    }

    .stroke-actions .btn {
        width: 100%;
    }
}