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

:root {
    --bg-primary: #1a1b26;
    --bg-secondary: #24283b;
    --bg-tertiary: #1f2335;
    --text-primary: #c0caf5;
    --text-secondary: #9aa5ce;
    --accent: #7aa2f7;
    --accent-hover: #89b4ff;
    --success: #9ece6a;
    --error: #f7768e;
    --border: #3b4261;
}

body {
    font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent);
}

.logo svg {
    color: var(--accent);
}

.status {
    font-size: 0.85rem;
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    background: var(--bg-tertiary);
}

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

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

.status.info {
    color: var(--accent);
}

.main {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.panel {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.editor-panel {
    width: 50%;
    border-right: 1px solid var(--border);
}

.preview-panel {
    flex: 1;
    background: var(--bg-tertiary);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.panel-content {
    flex: 1;
    overflow: auto;
    position: relative;
}

.CodeMirror {
    height: 100% !important;
    font-size: 14px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

.CodeMirror-gutters {
    background: var(--bg-secondary) !important;
    border-right: 1px solid var(--border) !important;
}

.resizer {
    width: 6px;
    background: var(--border);
    cursor: col-resize;
    transition: background 0.2s;
}

.resizer:hover {
    background: var(--accent);
}

#pdf-container {
    display: flex;
    justify-content: center;
    padding: 1rem;
    background: #2d2d2d;
}

#pdf-canvas {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    max-width: 100%;
    height: auto;
}

.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem;
}

.placeholder p {
    font-size: 1rem;
}

.error-log {
    text-align: left;
    font-size: 0.8rem;
    color: var(--error);
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 4px;
    max-width: 100%;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.zoom-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.zoom-controls button {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.zoom-controls button:hover {
    background: var(--accent);
    border-color: var(--accent);
}

#zoom-level {
    font-size: 0.8rem;
    min-width: 45px;
    text-align: center;
}

@media (max-width: 768px) {
    .main {
        flex-direction: column;
    }
    
    .editor-panel {
        width: 100% !important;
        height: 50%;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    
    .preview-panel {
        height: 50%;
    }
    
    .resizer {
        display: none;
    }
}