.ig-tool-wrapper { --p-bg: #ffffff; --p-border: #e2e8f0; --p-primary: #E1306C; --p-text: #0f172a; width: 100%; max-width: 1300px; margin: 0 auto; background: var(--p-bg); border-radius: 20px; padding: 24px; border: 1px solid var(--p-border); box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05); box-sizing: border-box; }
.ig-header-main { font-size: 1.6rem; font-weight: 800; color: var(--p-text); margin-bottom: 8px; text-align: center; }
.ig-subtitle { color: #64748b; font-size: 0.95rem; padding-bottom: 20px; border-bottom: 1px solid var(--p-border); margin-bottom: 24px; text-align: center; max-width: 800px; margin-left: auto; margin-right: auto; line-height: 1.6; }

/* 上下结构单栏布局 */
.ig-layout { display: flex; flex-direction: column; gap: 24px; }

/* 面板样式 */
.ig-panel { display: flex; flex-direction: column; background: #f8fafc; border: 1px solid var(--p-border); border-radius: 16px; overflow: hidden; padding: 0; box-sizing: border-box; }
.ig-preview-panel { background: #fdf2f8; padding: 24px; display: flex; align-items: center; justify-content: flex-start; flex-direction: column; box-sizing: border-box; }
.ig-panel-title { font-size: 1.05rem; font-weight: 700; color: #334155; padding: 20px; border-bottom: 1px solid var(--p-border); background: #ffffff; margin: 0; }

/* 配置区的多列网格布局 */
.ig-config-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; padding: 24px; box-sizing: border-box; }
.ig-config-section { display: flex; flex-direction: column; }
.ig-section-title { font-size: 0.95rem; font-weight: 700; color: #475569; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; border-bottom: 1px dashed #cbd5e1; padding-bottom: 10px; }

.ig-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.ig-form-group { display: flex; flex-direction: column; margin-bottom: 12px; }
.ig-label { font-size: 0.85rem; font-weight: 600; color: #64748b; margin-bottom: 6px; }

.ig-input, .ig-select, .ig-textarea { width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid #cbd5e1; background: #ffffff; color: var(--p-text); font-size: 0.95rem; outline: none; transition: 0.2s; box-sizing: border-box; }
.ig-textarea { resize: vertical; min-height: 100px; font-family: inherit; }
.ig-input:focus, .ig-select:focus, .ig-textarea:focus { border-color: var(--p-primary); box-shadow: 0 0 0 3px rgba(225, 48, 108, 0.15); }

/* 文件上传 */
.ig-file-upload { display: block; width: 100%; border: 1px dashed #94a3b8; background: #ffffff; border-radius: 8px; padding: 10px; text-align: center; cursor: pointer; transition: 0.2s; box-sizing: border-box; }
.ig-file-upload:hover { border-color: var(--p-primary); background: #fdf2f8; color: var(--p-primary); }
.ig-file-upload input[type="file"] { display: none; }
.ig-file-upload span { font-size: 0.85rem; font-weight: 600; color: #475569; }

/* 悬浮式主题配置栏 */
.ig-theme-picker-bar { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 24px; padding: 12px 24px; background: #ffffff; border: 1px solid var(--p-border); border-radius: 12px; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05); box-sizing: border-box; width: 100%; max-width: 470px; }
.ig-theme-label { font-weight: 700; color: #475569; font-size: 0.95rem; white-space: nowrap; }
.ig-theme-picker { display: flex; gap: 12px; flex: 1; min-width: 200px; }
.ig-theme-option { flex: 1; padding: 10px; text-align: center; border-radius: 8px; font-weight: bold; font-size: 0.9rem; cursor: pointer; transition: 0.2s; border: 2px solid transparent; box-sizing: border-box; }
.ig-theme-option:hover { transform: translateY(-2px); }
.ig-theme-option.active { box-shadow: 0 4px 12px rgba(0,0,0,0.1); }

/* 按钮 */
.ig-btn-primary { background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%); color: white; border: none; padding: 10px 20px; border-radius: 20px; font-weight: 700; font-size: 0.95rem; cursor: pointer; transition: 0.2s; display: flex; align-items: center; gap: 6px; box-shadow: 0 4px 12px rgba(225, 48, 108, 0.3); }
.ig-btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }

/* ================= 黑夜模式 (工具自身外壳适配) ================= */
[data-theme="dark"] .ig-tool-wrapper { background: #1e293b; border-color: #334155; }
[data-theme="dark"] .ig-header-main, [data-theme="dark"] .ig-panel-title { color: #f8fafc; }
[data-theme="dark"] .ig-panel { background: #0f172a; border-color: #475569; }
[data-theme="dark"] .ig-panel-title { background: #1e293b; border-bottom-color: #475569; }
[data-theme="dark"] .ig-preview-panel { background: #020617; }
[data-theme="dark"] .ig-section-title { border-bottom-color: #334155; }
[data-theme="dark"] .ig-label { color: #cbd5e1; }
[data-theme="dark"] .ig-input, [data-theme="dark"] .ig-select, [data-theme="dark"] .ig-textarea { background: #020617; border-color: #475569; color: #f8fafc; }
[data-theme="dark"] .ig-file-upload { background: #1e293b; border-color: #475569; }
[data-theme="dark"] .ig-theme-picker-bar { background: #0f172a; border-color: #475569; }
[data-theme="dark"] .ig-theme-label { color: #cbd5e1; }


/* =======================================================
   独立封装的 Instagram 贴文渲染引擎 (严格隔离)
   ======================================================= */
.ig-preview-container { width: 100%; display: flex; justify-content: center; margin-top: 20px; overflow: hidden; box-sizing: border-box; }

.ig-mockup-wrapper {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    width: 100%;
    max-width: 470px; /* IG 常见宽度 */
    background-color: var(--ig-bg);
    border: 1px solid var(--ig-border);
    border-radius: 8px; /* IG Web端边角 */
    padding-bottom: 12px;
    box-sizing: border-box;
    transition: background-color 0.3s;
    
    /* 默认浅色主题变量 */
    --ig-bg: #ffffff;
    --ig-text: #262626;
    --ig-text-dim: #8e8e8e;
    --ig-border: #dbdbdb;
    --ig-blue: #0095f6;
}

.ig-mockup-wrapper[data-ig-theme="dark"] {
    --ig-bg: #000000;
    --ig-text: #fafafa;
    --ig-text-dim: #a8a8a8;
    --ig-border: #262626;
}

/* 头部 */
.ig-mockup-header { display: flex; justify-content: space-between; align-items: center; padding: 12px 14px; }
.ig-mockup-header-left { display: flex; align-items: center; overflow: hidden; }

/* IG 故事彩环模拟 (可选设计) */
.ig-mockup-avatar-ring { padding: 2px; border-radius: 50%; background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); margin-right: 12px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.ig-mockup-avatar { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; border: 2px solid var(--ig-bg); }

.ig-mockup-user-info { display: flex; flex-direction: column; overflow: hidden; }
.ig-mockup-name-row { display: flex; align-items: center; }
.ig-mockup-username { font-weight: 600; font-size: 14px; color: var(--ig-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ig-mockup-badge { margin-left: 4px; display: flex; align-items: center; flex-shrink: 0; }
.ig-mockup-badge svg { width: 14px; height: 14px; }
.ig-mockup-location { font-size: 12px; color: var(--ig-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 2px; }

.ig-mockup-dots svg { width: 24px; height: 24px; fill: var(--ig-text); }

/* 主图 */
.ig-mockup-media { width: 100%; overflow: hidden; display: flex; align-items: center; justify-content: center; background: #000; border-top: 1px solid var(--ig-border); border-bottom: 1px solid var(--ig-border); }
.ig-mockup-media img { width: 100%; max-height: 580px; object-fit: cover; display: block; }

/* 动作条 */
.ig-mockup-actions { display: flex; justify-content: space-between; align-items: center; padding: 12px 14px 8px 14px; }
.ig-actions-left { display: flex; gap: 16px; align-items: center; }
.ig-actions-left svg, .ig-actions-right svg { width: 24px; height: 24px; color: var(--ig-text); cursor: pointer; }
.ig-actions-left svg.ig-icon-heart { color: var(--ig-text); }

/* 底部文字区 */
.ig-mockup-footer { padding: 0 14px; display: flex; flex-direction: column; gap: 6px; }
.ig-mockup-likes { font-weight: 600; font-size: 14px; color: var(--ig-text); }

/* 核心修复点：缩小 pre-wrap 的范围 */
.ig-mockup-caption-wrap { font-size: 14px; color: var(--ig-text); line-height: 18px; word-break: break-word; overflow-wrap: break-word; }
.ig-mockup-username-bold { font-weight: 600; margin-right: 6px; }
/* 只给正文内容加 pre-wrap 属性，保证换行且不引入 HTML 换行空白 */
.ig-mockup-caption { white-space: pre-wrap; }

.ig-mockup-comments-count { font-size: 14px; color: var(--ig-text-dim); margin-top: 2px; }
.ig-mockup-time { font-size: 10px; color: var(--ig-text-dim); margin-top: 4px; letter-spacing: 0.2px; }


/* ================= 移动端强力自适应适配 ================= */
@media (max-width: 650px) {
    .ig-tool-wrapper { padding: 16px; }
    .ig-preview-panel { padding: 16px 12px; }
    
    /* 缩小预览外壳，取消边框以贴合手机原样 */
    .ig-mockup-wrapper { border: none; border-radius: 0; }
    
    .ig-config-grid { grid-template-columns: 1fr; padding: 16px; gap: 16px; }
    .ig-form-row { grid-template-columns: 1fr; gap: 12px; }
    .ig-theme-picker-bar { flex-direction: column; gap: 12px; padding: 16px; }
    .ig-theme-picker { width: 100%; min-width: auto; }
}