/* ============================================================
 * 未了线（回响·线下）EchoThreads 样式
 * 杂志编辑风（Noto Serif SC + Playfair Display），对齐 beta/未了线(2).html。
 * 主题色 --et-accent 由 JS 按聊天注入（8 色可选，仿余墨色卡）；
 * 派生配色走 color-mix，夜间靠 body.dark-mode / [data-theme="dark"] 覆盖；
 * 禁用毛玻璃（回响铁律），不写死夜间色值（走变量）。
 * ============================================================ */

/* ---- 面板配色变量（日间） ---- */
.echo-threads-overlay {
    --et-accent: #8C2A2A;
    --et-bg: color-mix(in srgb, var(--et-accent) 4%, #FAFAFA);
    --et-text-title: #1A1A1A;
    --et-text-main: #222222;
    --et-text-sub: #888888;
    --et-border-light: #E0E0E0;
    --et-border-dark: #1A1A1A;
    --et-label-bg: color-mix(in srgb, var(--et-accent) 12%, transparent);
    --et-row-bg: rgba(0, 0, 0, 0.03);
    --et-font-en: 'Playfair Display', 'Noto Serif SC', serif;
    --et-font-cn: 'Noto Serif SC', serif;
    --et-font-sans: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
}

/* ---- 面板配色变量（夜间） ---- */
body.dark-mode .echo-threads-overlay,
[data-theme="dark"] .echo-threads-overlay {
    --et-bg: color-mix(in srgb, var(--et-accent) 6%, #1C1C1E);
    --et-text-title: #F5F5F7;
    --et-text-main: #EAEAEA;
    --et-text-sub: #8E8E93;
    --et-border-light: #38383A;
    --et-border-dark: #666666;
    --et-label-bg: color-mix(in srgb, var(--et-accent) 20%, transparent);
    --et-row-bg: rgba(255, 255, 255, 0.04);
}

/* ============ 拓展板图标"线下"小字 ============ */
.ex-item .ex-item-sub {
    font-style: normal; font-size: 9px; font-weight: 500;
    color: var(--text-sub, #6b7280); opacity: 0.7; margin-left: 3px;
}

/* ============ 拓展板图标红点（启用指示，仿余墨） ============ */
.ex-item.echo-threads-active { position: relative; }
.ex-item.echo-threads-active::after {
    content: ''; position: absolute; top: 4px; right: 8px;
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--user-theme-color, #8C2A2A);
    box-shadow: 0 0 0 2px var(--card-bg, #fff);
    pointer-events: none;
}
/* ============ 总览弹窗 ============ */
.echo-threads-overlay {
    position: absolute; inset: 0; z-index: 3000;
    display: none; align-items: flex-end; justify-content: center;
}
.echo-threads-overlay.active { display: flex; }
.echo-threads-overlay .et-mask {
    position: absolute; inset: 0; background: rgba(0, 0, 0, 0.32);
    /* 无毛玻璃：不使用 backdrop-filter */
}
.echo-threads-overlay .et-modal {
    position: relative; width: 100%; max-width: 480px;
    max-height: 88%; display: flex; flex-direction: column;
    background: var(--et-bg);
    border-radius: 18px 18px 0 0;
    box-shadow: 0 -8px 40px rgba(0, 0, 0, 0.22);
    animation: et-slide-up 0.32s cubic-bezier(0.22, 1, 0.36, 1);
    overflow: hidden;
    transition: background 0.4s ease;
}
@keyframes et-slide-up { from { transform: translateY(100%); } to { transform: translateY(0); } }

/* ---- 头部（杂志风标题） ---- */
.et-header {
    padding: 24px 24px 20px; flex-shrink: 0;
    display: flex; justify-content: space-between; align-items: flex-start;
    border-bottom: 2px solid var(--et-border-dark);
    transition: border-color 0.4s;
}
.et-issue {
    font-family: var(--et-font-en);
    font-size: 10px; font-weight: 700; letter-spacing: 2px;
    color: var(--et-text-sub); text-transform: uppercase; margin-bottom: 12px;
}
.et-title {
    font-family: var(--et-font-cn);
    font-size: 30px; font-weight: 900; line-height: 1;
    color: var(--et-text-title); letter-spacing: 2px;
    transition: color 0.4s;
}
.et-title span {
    font-family: var(--et-font-en); font-style: italic; font-weight: 400;
    font-size: 22px; color: var(--et-accent); margin-left: 8px;
    transition: color 0.4s;
}
.et-close {
    background: none; border: none; font-size: 24px; cursor: pointer;
    color: var(--et-text-title); padding: 2px; line-height: 1; margin-top: 8px;
    transition: color 0.4s;
}

/* ---- 开关行（仿余墨 toggle-row） ---- */
.et-toggle-row {
    flex-shrink: 0; padding: 14px 24px;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    background: var(--et-row-bg);
    border-bottom: 1px solid var(--et-border-light);
    transition: background 0.25s ease, border-color 0.25s ease;
}
.et-toggle-row.is-on {
    background: var(--et-label-bg);
    border-bottom-color: var(--et-accent);
}
.et-toggle-info { display: flex; align-items: center; gap: 12px; min-width: 0; }
.et-toggle-icon { font-size: 22px; color: var(--et-text-sub); flex-shrink: 0; transition: color 0.25s; }
.et-toggle-row.is-on .et-toggle-icon { color: var(--et-accent); }
.et-toggle-label { font-size: 14px; font-weight: 600; color: var(--et-text-main); line-height: 1.3; }
.et-offline-tag {
    font-size: 10px; font-weight: 500; color: var(--et-text-sub);
    border: 1px solid var(--et-border-light);
    border-radius: 5px; padding: 0 4px; margin-left: 4px; vertical-align: middle;
}
.et-toggle-hint { font-size: 12px; color: var(--et-text-sub); margin-top: 2px; line-height: 1.3; transition: color 0.25s; }
.et-toggle-row.is-on .et-toggle-hint { color: var(--et-accent); font-weight: 500; }

/* iOS 风开关（复用余墨同款结构，track 开启填主题色对比清晰） */
.et-switch { position: relative; display: inline-block; width: 46px; height: 26px; flex-shrink: 0; cursor: pointer; }
.et-switch input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.et-switch-track { position: absolute; inset: 0; background: rgba(120, 120, 128, 0.32); border-radius: 26px; transition: background 0.25s cubic-bezier(0.34, 1.56, 0.64, 1); display: block; }
.et-switch-thumb { position: absolute; top: 2px; left: 2px; width: 22px; height: 22px; background: #fff; border-radius: 50%; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.25); transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1); }
.et-switch input:checked ~ .et-switch-track { background: var(--et-accent); }
.et-switch input:checked ~ .et-switch-track .et-switch-thumb { transform: translateX(20px); }

/* ---- 色卡行（多重配色方案，仿余墨色卡 + 参考 8 色） ---- */
.et-color-row {
    flex-shrink: 0; padding: 12px 24px;
    display: flex; align-items: center; gap: 12px;
    border-bottom: 1px solid var(--et-border-light);
}
.et-color-label {
    font-family: var(--et-font-en); font-size: 10px; font-weight: 700;
    letter-spacing: 1px; text-transform: uppercase; color: var(--et-text-sub); flex-shrink: 0;
}
.et-color-list { display: flex; gap: 12px; overflow-x: auto; scrollbar-width: none; }
.et-color-list::-webkit-scrollbar { display: none; }
.et-color-dot {
    width: 20px; height: 20px; border-radius: 50%; flex-shrink: 0; cursor: pointer;
    border: 1px solid rgba(128, 128, 128, 0.2); padding: 0; position: relative;
    transition: transform 0.2s;
}
.et-color-dot.is-active::after {
    content: ''; position: absolute; inset: -4px;
    border: 1px solid var(--et-text-title); border-radius: 50%;
}

/* ---- 滚动区 ---- */
.et-scroll { flex: 1; overflow-y: auto; padding: 0 24px 40px; -webkit-overflow-scrolling: touch; }

/* 分类分隔（单人卡=线索/行囊；快穿卡=世界 Vol.） */
.et-divider {
    margin-top: 32px; margin-bottom: 12px; padding-bottom: 8px;
    border-bottom: 2px solid var(--et-border-dark);
    display: flex; justify-content: space-between; align-items: flex-end;
    transition: border-color 0.4s;
}
.et-divider-title { font-family: var(--et-font-cn); font-size: 16px; font-weight: 900; color: var(--et-text-title); letter-spacing: 1px; transition: color 0.4s; }
.et-divider-label { font-family: var(--et-font-en); font-size: 10px; font-weight: 700; color: var(--et-accent); text-transform: uppercase; letter-spacing: 1px; transition: color 0.4s; }
/* 历史世界灰显 */
.et-divider.history { border-bottom-color: var(--et-border-light); }
.et-divider.history .et-divider-title { color: var(--et-text-sub); font-weight: 700; }
.et-divider.history .et-divider-label { color: var(--et-text-sub); }

/* 列表项 */
.et-item { display: flex; align-items: flex-start; gap: 12px; padding: 20px 0; border-bottom: 1px solid var(--et-border-light); transition: border-color 0.4s; }
.et-number { font-family: var(--et-font-en); font-size: 32px; font-weight: 400; line-height: 0.8; color: var(--et-accent); opacity: 0.85; width: 36px; flex-shrink: 0; letter-spacing: -2px; transition: color 0.4s; }
.et-number--icon { font-size: 24px; margin-top: 4px; }
.et-content { flex: 1; display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.et-item-title { font-family: var(--et-font-cn); font-size: 15px; font-weight: 700; color: var(--et-text-main); line-height: 1.4; letter-spacing: 0.5px; transition: color 0.4s; }
.et-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.et-status { font-family: var(--et-font-cn); font-style: normal; font-size: 11px; font-weight: 600; color: var(--et-accent); letter-spacing: 1px; transition: color 0.4s; }
.et-status.pending { color: var(--et-text-sub); }
.et-label { background: var(--et-label-bg); color: var(--et-accent); font-family: var(--et-font-cn); font-size: 10px; font-weight: 700; padding: 2px 6px; letter-spacing: 1px; transition: all 0.4s; }
.et-source { font-family: var(--et-font-sans); font-size: 11px; color: var(--et-text-sub); }

/* 已了结：划掉 */
.et-item.resolved .et-number { color: var(--et-border-light); }
.et-item.resolved .et-item-title { text-decoration: line-through; color: var(--et-text-sub); font-weight: 400; }
.et-item.resolved .et-status { color: var(--et-text-sub); }
.et-item.resolved .et-label { background: var(--et-border-light); color: var(--et-text-sub); }

/* 空态 */
.et-empty { text-align: center; padding: 60px 24px; color: var(--et-text-sub); }
.et-empty i { font-size: 40px; opacity: 0.4; display: block; margin-bottom: 12px; color: var(--et-accent); }
.et-empty p { font-family: var(--et-font-cn); font-size: 16px; font-weight: 700; color: var(--et-text-main); margin: 0 0 6px; }
.et-empty small { font-size: 12px; opacity: 0.75; }
/* ============ 气泡内折叠快照（Soft K-UI 柔和风） ============ */
.echo-threads-mount { margin: -6px 0 4px; }
.etw-widget {
    /* 🧵 聊天流里的快照气泡跟随回响主题主色（--bubble-me-bg，Theme 面板色卡/自定义取色轮都设它），与整体视觉统一；不走未了线弹窗的 8 色盘 */
    --et-accent: var(--bubble-me-bg, #8C2A2A);
    --etw-bg: color-mix(in srgb, var(--et-accent) 8%, #FFFFFF);
    --etw-text-main: #333D4B;
    --etw-text-sub: #8B95A1;
    background: var(--etw-bg);
    border-radius: 16px; padding: 4px; margin-top: 14px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
body.dark-mode .etw-widget,
[data-theme="dark"] .etw-widget {
    --etw-bg: color-mix(in srgb, var(--et-accent) 15%, #2C2C2E);
    --etw-text-main: #E5E5EA;
    --etw-text-sub: #8E8E93;
}
.etw-toggle {
    background: transparent; border: none; width: 100%; padding: 10px 12px;
    border-radius: 12px; display: flex; justify-content: space-between; align-items: center; cursor: pointer;
}
.etw-title { font-family: var(--et-font-sans, -apple-system, sans-serif); font-size: 13px; font-weight: 700; color: var(--et-accent); display: flex; align-items: center; gap: 6px; }
.etw-world-tag { background: var(--et-accent); color: #fff; font-size: 10px; padding: 2px 6px; border-radius: 6px; margin-right: 4px; }
.etw-arrow { color: var(--et-accent); font-size: 18px; transition: transform 0.4s; }
.etw-widget.expanded .etw-arrow { transform: rotate(180deg); }
.etw-content { display: none; flex-direction: column; gap: 12px; padding: 8px 12px 12px; }
.etw-widget.expanded .etw-content { display: flex; }
.etw-item { font-family: var(--et-font-sans, -apple-system, sans-serif); font-size: 13px; font-weight: 600; color: var(--etw-text-main); display: flex; align-items: center; gap: 10px; }
.etw-item.is-done .etw-text { text-decoration: line-through; opacity: 0.6; }
.etw-icon { width: 24px; height: 24px; border-radius: 8px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 14px; transition: all 0.4s; }
.etw-icon.pending { background: rgba(242, 154, 56, 0.15); color: #F29A38; }
.etw-icon.ongoing { background: var(--et-accent); color: #fff; }
.etw-icon.done { background: rgba(139, 149, 161, 0.15); color: var(--etw-text-sub); }
.etw-icon.item { background: color-mix(in srgb, var(--et-accent) 15%, transparent); color: var(--et-accent); }
.etw-text { flex: 1; min-width: 0; }
.etw-badge { font-style: normal; font-size: 10px; font-weight: 600; color: var(--etw-text-sub); margin-left: 6px; }
.etw-badge.soft { opacity: 0.7; }