:root {
    --bg-color: #1a1a2e;
    --panel-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --primary-color: #00a8cc;
    --secondary-color: #3d3d5e;
    --success-color: #4ec9b0;
    --muted-color: #aaa;
    --error-color: #ff5370;
    --border-color: #444;
    --font-main: 'Inter', sans-serif;
    --font-code: 'Fira Code', monospace;
}

* {
    font-family: var(--font-main);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
}

.editor-container {
    height: 300px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--panel-bg);
}

.editor-container.readonly {
    background-color: #242440;
}

.preview-panel {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    transition: right 0.3s ease-in-out;
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.preview-panel.active {
    right: 0;
}

.preview-toggle {
    position: fixed;
    top: 50%;
    right: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1001;
    transition: background-color 0.2s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.preview-toggle:hover {
    background-color: #0090b3;
}

.preview-toggle.active {
    right: calc(100% - 4rem);
}

#preview-frame {
    flex-grow: 1;
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: white;
}

.status {
    padding: 0.25rem 1rem;
    border-radius: 8px;
    font-family: var(--font-code);
    font-size: 0.9em;
    display: none;
}

.status.error {
    color: var(--error-color);
    display: block;
}

.status.success {
    color: var(--success-color);
    display: block;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.btn-primary:hover {
    background-color: #4a4a6a;
}

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

.btn-primary.copied {
    background-color: var(--success-color);
    color: #161625;
}

.header-bg {
    background-color: #161625;
}

.select-custom {
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem;
}

@media (min-width: 768px) {
    .editor-container {
        height: 400px;
    }
    
    .desktop-layout {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }
    
    .preview-panel {
        position: relative;
        right: 0;
        width: auto;
        height: auto;
        background-color: transparent;
        z-index: auto;
    }
    
    .preview-toggle {
        display: none;
    }
}

@media (min-width: 1024px) {
    .editor-container {
        height: 500px;
    }
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(22, 22, 37, 0.95);
    z-index: 2000;
    display: none;
    padding: 2rem;
    box-sizing: border-box;
}

.modal-overlay.active {
    display: flex;
}

#modal-preview-frame {
    width: 100%;
    height: 100%;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: white;
}

.modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--muted-color);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s, transform 0.2s;
}

.modal-close-btn:hover {
    color: var(--text-color);
    transform: rotate(90deg);
}