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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 40px);
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 24px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

header h1 {
    font-size: 28px;
    font-weight: 600;
}

.controls {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

.btn-primary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    backdrop-filter: blur(10px);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
}

.status {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    font-size: 13px;
    opacity: 0;
    transition: opacity 0.3s;
}

.status.show {
    opacity: 1;
}

.editor-wrapper {
    flex: 1;
    padding: 24px;
    overflow: hidden;
    display: flex;
}

#editor {
    width: 100%;
    height: 100%;
    border: none;
    outline: none;
    resize: none;
    font-size: 16px;
    line-height: 1.6;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    color: #333;
    background: #fafafa;
    padding: 20px;
    border-radius: 8px;
}

#editor::placeholder {
    color: #999;
}

footer {
    padding: 16px 32px;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.info {
    display: flex;
    gap: 24px;
    font-size: 14px;
    color: #666;
}

.sync-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #666;
}

.sync-indicator {
    font-size: 12px;
    animation: pulse 2s infinite;
}

.sync-indicator.synced {
    color: #28a745;
    animation: none;
}

.sync-indicator.syncing {
    color: #ffc107;
}

.sync-indicator.error {
    color: #dc3545;
    animation: none;
}

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

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    header h1 {
        font-size: 24px;
    }
    
    .container {
        height: calc(100vh - 20px);
        border-radius: 12px;
    }
    
    footer {
        flex-direction: column;
        align-items: flex-start;
    }
}