/* CSV2BI §2 디자인 시스템 - MyStockBuddy 공통 테마 */
:root {
    /* Primary & Accent */
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #e0f2fe;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #10b981 100%);

    /* Semantic */
    --success-color: #10b981;
    --success-light: #d1fae5;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;

    /* Background & Surface */
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --hover-bg: #f0f9ff;

    /* Text */
    --text-primary: #1e293b;
    --text-secondary: #64748b;

    /* Border */
    --border-color: #e2e8f0;
}

* {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    margin: 0;
    color: var(--text-primary);
}

.brand-text {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #3b82f6 0%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 카드·버튼 공통 */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,.06), 0 2px 8px rgba(0,0,0,.04);
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    border: none;
}

/* 드롭존·분석 화면용 (BI 도구 열 때) */
.drop-zone {
    background: var(--bg-color);
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 12px;
    min-height: 100px;
    transition: all 0.2s;
}

.drop-zone.drag-over {
    border-color: var(--success-color);
    background: linear-gradient(135deg, #e0f2fe 0%, #d1fae5 100%);
}

.chart-section {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    min-height: 350px;
}

@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        max-height: 200px;
    }
}