/* ========================================
   对比度检测工具样式
   ======================================== */

.main-content { width: 100%; max-width: 800px; height: calc(100vh - 120px); display: flex; align-items: center; padding: 0 20px; padding-bottom: 50px; z-index: 10; overflow-y: auto; }
.container { width: 100%; }
.tool-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-xl); overflow: hidden; width: 100%; box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3); }

/* 颜色选择区 */
.color-pickers { display: flex; align-items: center; gap: 16px; padding: 20px; border-bottom: 1px solid var(--border-color); }
.color-picker-group { flex: 1; }
.color-label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 8px; font-weight: 600; }
.picker-row { display: flex; gap: 8px; align-items: center; }
.color-input { width: 50px; height: 36px; border: 1px solid var(--border-color); border-radius: 8px; cursor: pointer; background: none; padding: 0; }
.hex-input { flex: 1; padding: 6px 10px; border-radius: 6px; border: 1px solid var(--border-color); background: var(--bg-card); color: var(--text-primary); font-family: var(--font-mono); font-size: 14px; outline: none; }
.hex-input:focus { border-color: var(--primary-color); }
.swap-divider { flex-shrink: 0; }
.btn-swap { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border-color); background: var(--bg-card); color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: 0.2s; font-size: 16px; }
.btn-swap:hover { border-color: var(--primary-color); color: var(--primary-color); background: var(--primary-light); }

/* 预览区 */
.preview-area { padding: 24px; border-bottom: 1px solid var(--border-color); }
.preview-card { padding: 24px; border-radius: var(--radius-lg); transition: background-color 0.2s, color 0.2s; }
.preview-heading { font-size: 22px; margin: 0 0 12px 0; line-height: 1.4; }
.preview-body { font-size: 16px; margin: 0 0 10px 0; line-height: 1.6; }
.preview-small { font-size: 14px; margin: 0; line-height: 1.5; opacity: 0.85; }

/* 检测结果 */
.results-section { padding: 20px; border-bottom: 1px solid var(--border-color); }
.ratio-display { text-align: center; margin-bottom: 20px; }
.ratio-value { font-size: 48px; font-weight: 700; font-family: var(--font-mono); line-height: 1; }
.ratio-label { font-size: 12px; color: var(--text-muted); margin-top: 6px; }
.wcag-results { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.wcag-card { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: var(--radius-md); border: 1px solid var(--border-color); background: rgba(0,0,0,0.2); }
.wcag-icon { font-size: 20px; }
.wcag-icon.pass { color: #22c55e; }
.wcag-icon.fail { color: #ef4444; }
.wcag-info { display: flex; flex-direction: column; }
.wcag-level { font-size: 13px; font-weight: 600; color: var(--text-primary); }
.wcag-desc { font-size: 11px; color: var(--text-muted); }

/* 推荐配色 */
.suggestions-section { padding: 20px; }
.suggestions-label { font-size: 12px; color: var(--text-muted); font-weight: 600; margin-bottom: 12px; }
.suggestion-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; }
.suggestion-item { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border-color); background: rgba(0,0,0,0.2); cursor: pointer; transition: 0.2s; }
.suggestion-item:hover { border-color: var(--primary-color); }
.suggestion-colors { display: flex; gap: 2px; }
.suggestion-swatch { width: 20px; height: 20px; border-radius: 4px; border: 1px solid rgba(255,255,255,0.1); }
.suggestion-ratio { font-size: 11px; color: var(--text-muted); font-family: var(--font-mono); }

@media (max-width: 768px) {
    .color-pickers { flex-direction: column; }
    .swap-divider { transform: rotate(90deg); }
    .wcag-results { grid-template-columns: 1fr; }
    .ratio-value { font-size: 36px; }
}