:root {
    --primary: #2c3e50;
    --secondary: #27ae60;
    --accent: #e67e22;
    --bg: #f4f7f6;
    --white: #ffffff;
    --text: #333333;
    --border: #ddd;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 350px;
    background: var(--primary);
    color: var(--white);
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 20px;
    overflow-y: auto;
}

h2 { margin-bottom: 20px; }

.card {
    background: var(--white);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

textarea {
    width: 100%;
    height: 100px;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    margin-bottom: 10px;
    box-sizing: border-box;
    font-size: 14px;
}

button {
    background: var(--secondary);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

button:hover { background: #219150; }

.recommendations {
    margin-top: 20px;
}

.rec-item {
    border-left: 4px solid var(--secondary);
    padding: 15px;
    background: #f9f9f9;
    margin-bottom: 10px;
    position: relative;
    border-radius: 0 8px 8px 0;
}

.copy-btn {
    position: absolute;
    right: 15px;
    top: 15px;
    padding: 5px 10px;
    font-size: 12px;
    background: var(--accent);
}

.log-item {
    font-size: 13px;
    padding: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.timestamp { color: #bdc3c7; font-size: 11px; }