/* ================================================================
   💎 故事（Compose）— 对话式一体化故事生成界面
   设计约束（用户红线）：
   1. 定高不延伸：整页永不出现纵向滚动，只有中部成品流内部滚动
   2. 放大预览原地弹层，不改变页面高度
   3. 左右气泡不重叠、不覆盖；用户上传内容缩略图小而清晰
   ================================================================ */

/* -------- 页面容器：定高，禁止整页滚动 -------- */
#page-compose.active {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 128px);   /* 52 顶栏 + 28 上内边距 + 48 下内边距 */
    overflow: hidden;
}
#page-compose .page-header {
    flex-shrink: 0;
    margin-bottom: 14px;
}

.compose-root {
    flex: 1;
    min-height: 0;
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    overflow: hidden;
}

/* ================================================================
   顶部参数栏
   ================================================================ */
.compose-topbar {
    flex-shrink: 0;
    display: flex;
    align-items: flex-end;
    gap: 14px;
    padding: 12px 16px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-subtle);
}
.cp-fields {
    flex: 1;
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    min-width: 0;
}
.cp-field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.cp-field label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .04em;
    color: var(--text-tertiary);
    text-transform: uppercase;
}
.cp-select {
    height: 36px;
    padding: 0 30px 0 12px;
    font-size: 13px;
    line-height: 1.3;
    color: var(--text-primary);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: 8px;
    outline: none;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235e5e6e' stroke-width='3'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    transition: border-color .18s ease, background .18s ease;
}
.cp-select:hover { border-color: var(--border-hover); }
.cp-select:focus { border-color: var(--border-focus); }
.cp-select option { background: var(--bg-overlay); color: var(--text-primary); }

.cp-gear {
    flex-shrink: 0;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-tertiary);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: 8px;
    cursor: pointer;
    transition: all .18s ease;
}
.cp-gear:hover { color: var(--text-primary); border-color: var(--border-hover); }
.cp-gear[aria-expanded="true"] {
    color: var(--accent);
    border-color: var(--border-focus);
    background: var(--accent-soft);
}

.compose-topbar-extra {
    flex-shrink: 0;
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    padding: 12px 16px;
    background: var(--bg-overlay);
    border-bottom: 1px solid var(--border-subtle);
    animation: cpSlideDown .18s ease;
}
.compose-topbar-extra[hidden] { display: none; }
@keyframes cpSlideDown { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

/* ================================================================
   阶段进度轨
   ================================================================ */
.compose-stage-rail {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    overflow-x: auto;
    scrollbar-width: none;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
}
.compose-stage-rail::-webkit-scrollbar { display: none; }
.cp-stage {
    display: flex; align-items: center; gap: 6px;
    padding: 3px 10px 3px 8px;
    font-size: 11px;
    color: var(--text-disabled);
    white-space: nowrap;
    border-radius: 20px;
    transition: all .2s ease;
}
.cp-stage + .cp-stage::before {
    content: '';
    width: 12px; height: 1px;
    background: var(--border-default);
    margin-right: 4px;
}
.cp-stage i {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--text-disabled);
    flex-shrink: 0;
    transition: all .2s ease;
}
.cp-stage.active {
    color: var(--accent);
    background: var(--accent-soft);
}
.cp-stage.active i {
    background: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    animation: cpPulse 1.4s ease-in-out infinite;
}
.cp-stage.done { color: var(--success); }
.cp-stage.done i { background: var(--success); }
@keyframes cpPulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

/* ================================================================
   中部成品流（唯一滚动区）
   ================================================================ */
.compose-feed {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 18px 16px 10px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    scroll-behavior: smooth;
}
.compose-feed::-webkit-scrollbar { width: 8px; }
.compose-feed::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,.07);
    border-radius: 4px;
}
.compose-feed::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,.14); }

/* -------- 空态引导 -------- */
.compose-empty {
    margin: auto;
    max-width: 520px;
    text-align: center;
    padding: 20px;
}
.compose-empty .ce-icon { font-size: 40px; margin-bottom: 12px; opacity: .9; }
.compose-empty .ce-title {
    font-size: 17px; font-weight: 650;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.compose-empty .ce-desc {
    font-size: 12.5px; line-height: 1.7;
    color: var(--text-tertiary);
    margin-bottom: 18px;
}
.ce-chips { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.ce-chip {
    padding: 6px 14px;
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: 20px;
    cursor: pointer;
    transition: all .2s cubic-bezier(0.16, 1, 0.3, 1);
}
.ce-chip:hover {
    color: var(--text-primary);
    border-color: var(--border-focus);
    background: var(--accent-soft);
    transform: translateY(-1px);
}

/* ================================================================
   对话气泡（左右分明，绝不重叠）
   ================================================================ */
.cp-msg {
    display: flex;
    gap: 10px;
    max-width: 100%;
    animation: cpMsgIn .26s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes cpMsgIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.cp-msg.user { flex-direction: row-reverse; }
.cp-msg .cp-avatar {
    flex-shrink: 0;
    width: 26px; height: 26px;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
}
.cp-msg.user .cp-avatar { background: var(--accent-soft); border-color: var(--border-focus); }

.cp-bubble {
    max-width: 68%;
    min-width: 0;
    padding: 10px 13px;
    font-size: 13px;
    line-height: 1.65;
    color: var(--text-primary);
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    word-break: break-word;
    white-space: pre-wrap;
}
.cp-msg.user .cp-bubble {
    background: linear-gradient(135deg, rgba(232,184,75,.16), rgba(232,184,75,.08));
    border-color: var(--border-focus);
    border-top-right-radius: 4px;
}
.cp-msg.bot .cp-bubble { border-top-left-radius: 4px; }
/* 产物流气泡放宽（图片网格需要空间） */
.cp-msg.bot.wide .cp-bubble { max-width: 88%; }

/* 系统提示行 */
.cp-note {
    align-self: center;
    font-size: 11px;
    color: var(--text-tertiary);
    padding: 3px 12px;
    background: var(--bg-elevated);
    border-radius: 20px;
}

/* 思考中 */
.cp-typing { display: inline-flex; gap: 4px; align-items: center; height: 16px; }
.cp-typing i {
    width: 5px; height: 5px; border-radius: 50%;
    background: var(--text-tertiary);
    animation: cpDot 1.1s ease-in-out infinite;
}
.cp-typing i:nth-child(2) { animation-delay: .15s; }
.cp-typing i:nth-child(3) { animation-delay: .3s; }
@keyframes cpDot { 0%,60%,100% { opacity: .25; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }

/* ================================================================
   气泡内附件缩略图（真实照片感，小而清晰）
   ================================================================ */
.cp-bubble-atts {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}
.cp-bubble-atts:last-child { margin-bottom: 0; }
.cp-att-thumb {
    position: relative;
    width: 68px; height: 68px;
    border-radius: 9px;
    overflow: hidden;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    cursor: zoom-in;
    flex-shrink: 0;
    transition: transform .2s cubic-bezier(0.16, 1, 0.3, 1), border-color .2s ease;
}
.cp-att-thumb:hover { transform: scale(1.05); border-color: var(--border-focus); }
.cp-att-thumb img,
.cp-att-thumb video {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
}
/* 文档类缩略卡 */
.cp-att-thumb.doc {
    width: auto; min-width: 120px; max-width: 190px; height: 44px;
    display: flex; align-items: center; gap: 8px;
    padding: 0 10px;
    cursor: default;
}
.cp-att-thumb.doc .cp-doc-ico { font-size: 17px; flex-shrink: 0; }
.cp-att-thumb.doc .cp-doc-meta { min-width: 0; }
.cp-att-thumb.doc .cp-doc-name {
    font-size: 11.5px; color: var(--text-primary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cp-att-thumb.doc .cp-doc-size { font-size: 10px; color: var(--text-tertiary); }
/* 视频角标 */
.cp-att-thumb .cp-vbadge {
    position: absolute; left: 4px; bottom: 4px;
    padding: 1px 5px;
    font-size: 9px;
    color: #fff;
    background: rgba(0,0,0,.6);
    border-radius: 4px;
    backdrop-filter: blur(4px);
}
/* @角色卡 */
.cp-att-thumb.rolecard { border-color: rgba(52,211,153,.35); }
.cp-att-thumb.rolecard .cp-rolename {
    position: absolute; left: 0; right: 0; bottom: 0;
    padding: 2px 4px;
    font-size: 9px; text-align: center;
    color: #fff;
    background: linear-gradient(transparent, rgba(0,0,0,.8));
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ================================================================
   产物卡（角色 / 场景 / 道具 / 分镜关键帧 / 视频）
   ================================================================ */
.cp-asset-group { width: 100%; }
.cp-group-head {
    display: flex; align-items: center; gap: 8px;
    margin-bottom: 9px;
}
.cp-group-title {
    font-size: 12.5px; font-weight: 650;
    color: var(--text-primary);
}
.cp-group-count {
    font-size: 10.5px; color: var(--text-tertiary);
    padding: 1px 7px;
    background: var(--bg-input);
    border-radius: 10px;
}
.cp-group-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
    gap: 10px;
}
.cp-asset-card {
    position: relative;
    border-radius: 11px;
    overflow: hidden;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    transition: border-color .2s ease, transform .2s cubic-bezier(0.16, 1, 0.3, 1);
}
.cp-asset-card:hover { border-color: var(--border-focus); transform: translateY(-2px); }
.cp-asset-media {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background: #0a0a10;
    cursor: zoom-in;
    overflow: hidden;
}
.cp-asset-card[data-ratio="16:9"] .cp-asset-media { aspect-ratio: 16 / 9; }
.cp-asset-card[data-ratio="9:16"] .cp-asset-media { aspect-ratio: 9 / 16; }
.cp-asset-card[data-ratio="4:3"]  .cp-asset-media { aspect-ratio: 4 / 3; }
.cp-asset-card[data-ratio="21:9"] .cp-asset-media { aspect-ratio: 21 / 9; }
.cp-asset-media img, .cp-asset-media video {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
.cp-asset-meta {
    padding: 7px 9px;
    display: flex; align-items: center; justify-content: space-between; gap: 6px;
}
.cp-asset-name {
    font-size: 11.5px; color: var(--text-secondary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cp-asset-tag {
    flex-shrink: 0;
    font-size: 9.5px; color: var(--accent);
    padding: 1px 6px;
    background: var(--accent-soft);
    border-radius: 8px;
}
/* 右下角小重生成键 */
.cp-regen {
    position: absolute;
    right: 6px; bottom: 34px;
    width: 24px; height: 24px;
    display: flex; align-items: center; justify-content: center;
    color: #fff;
    background: rgba(0,0,0,.55);
    border: 1px solid rgba(255,255,255,.16);
    border-radius: 7px;
    cursor: pointer;
    opacity: 0;
    backdrop-filter: blur(6px);
    transition: opacity .18s ease, background .18s ease, transform .18s ease;
}
.cp-asset-card:hover .cp-regen { opacity: 1; }
.cp-regen:hover { background: var(--accent); transform: rotate(-90deg); }
.cp-regen.spinning svg { animation: cpSpin .9s linear infinite; }
@keyframes cpSpin { to { transform: rotate(360deg); } }

/* 骨架占位 */
.cp-asset-card.skeleton .cp-asset-media {
    background: linear-gradient(100deg, #0e0e16 30%, #16161f 50%, #0e0e16 70%);
    background-size: 220% 100%;
    animation: cpShimmer 1.3s ease-in-out infinite;
}
@keyframes cpShimmer { from { background-position: 180% 0; } to { background-position: -60% 0; } }

/* 阶段主按钮（引导式单按钮推进） */
.cp-stage-action {
    margin-top: 12px;
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.cp-primary-btn {
    display: inline-flex; align-items: center; gap: 7px;
    height: 34px; padding: 0 18px;
    font-size: 12.5px; font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), #8b7cf6);
    border: none; border-radius: 9px;
    cursor: pointer;
    box-shadow: 0 4px 14px var(--accent-glow);
    transition: transform .2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow .2s ease, filter .2s ease;
}
.cp-primary-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px var(--accent-glow); filter: brightness(1.06); }
.cp-primary-btn:disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
.cp-ghost-btn {
    height: 34px; padding: 0 14px;
    font-size: 12px; color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-default);
    border-radius: 9px;
    cursor: pointer;
    transition: all .18s ease;
}
.cp-ghost-btn:hover { color: var(--text-primary); border-color: var(--border-hover); }

/* ================================================================
   原地放大弹层 — 绝对定位覆盖 root，不撑高页面
   ================================================================ */
.compose-lightbox {
    position: absolute;
    inset: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(6, 6, 10, .72);
    backdrop-filter: blur(10px);
    animation: cpFade .16s ease;
}
.compose-lightbox[hidden] { display: none; }
@keyframes cpFade { from { opacity: 0; } to { opacity: 1; } }
.clb-inner {
    max-width: 100%;
    max-height: 100%;
    display: flex;
    flex-direction: column;
    background: var(--bg-surface);
    border: 1px solid var(--border-hover);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(0,0,0,.6);
    animation: cpZoomIn .2s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes cpZoomIn { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: none; } }
.clb-head {
    flex-shrink: 0;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 9px 12px;
    border-bottom: 1px solid var(--border-subtle);
}
.clb-title { font-size: 12.5px; color: var(--text-secondary); }
.clb-close {
    width: 24px; height: 24px;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; color: var(--text-tertiary);
    background: transparent; border: none; border-radius: 6px;
    cursor: pointer; transition: all .16s ease;
}
.clb-close:hover { color: var(--text-primary); background: var(--bg-hover); }
.clb-body {
    min-height: 0;
    display: flex; align-items: center; justify-content: center;
    overflow: auto;
    padding: 10px;
}
.clb-body img, .clb-body video {
    max-width: 100%;
    max-height: calc(100vh - 260px);
    object-fit: contain;
    border-radius: 8px;
    display: block;
}

/* ================================================================
   底部输入区
   ================================================================ */
.compose-composer {
    flex-shrink: 0;
    padding: 10px 14px 12px;
    background: var(--bg-elevated);
    border-top: 1px solid var(--border-subtle);
}
.compose-attach-strip {
    display: flex; flex-wrap: wrap; gap: 6px;
    margin-bottom: 8px;
    max-height: 88px;
    overflow-y: auto;
}
.compose-attach-strip[hidden] { display: none; }
.cp-pending {
    position: relative;
    width: 54px; height: 54px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    flex-shrink: 0;
}
.cp-pending img, .cp-pending video { width: 100%; height: 100%; object-fit: cover; display: block; }
.cp-pending.doc {
    width: auto; min-width: 110px; max-width: 170px; height: 54px;
    display: flex; align-items: center; gap: 7px; padding: 0 9px;
}
.cp-pending.doc .cp-doc-ico { font-size: 16px; }
.cp-pending .cp-doc-name {
    font-size: 11px; color: var(--text-secondary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cp-pending-x {
    position: absolute; right: 2px; top: 2px;
    width: 15px; height: 15px;
    display: flex; align-items: center; justify-content: center;
    font-size: 10px; line-height: 1; color: #fff;
    background: rgba(0,0,0,.65);
    border: none; border-radius: 50%;
    cursor: pointer;
}
.cp-pending-x:hover { background: var(--danger); }

.compose-input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 6px;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    transition: border-color .18s ease;
}
.compose-input-row:focus-within { border-color: var(--border-focus); }
.cp-attach-btn {
    flex-shrink: 0;
    height: 30px;
    display: inline-flex; align-items: center; gap: 5px;
    padding: 0 10px;
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: 8px;
    cursor: pointer;
    transition: all .18s ease;
}
.cp-attach-btn:hover { color: var(--text-primary); border-color: var(--border-focus); background: var(--accent-soft); }
.cp-input {
    flex: 1;
    min-width: 0;
    max-height: 108px;
    padding: 6px 4px;
    font-size: 13px;
    line-height: 1.6;
    font-family: inherit;
    color: var(--text-primary);
    background: transparent;
    border: none;
    outline: none;
    resize: none;
    overflow-y: auto;
}
.cp-input::placeholder { color: var(--text-disabled); }
.cp-send-btn {
    flex-shrink: 0;
    width: 32px; height: 30px;
    display: flex; align-items: center; justify-content: center;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), #8b7cf6);
    border: none; border-radius: 8px;
    cursor: pointer;
    transition: transform .18s cubic-bezier(0.16, 1, 0.3, 1), filter .18s ease, opacity .18s ease;
}
.cp-send-btn:hover { transform: translateY(-1px); filter: brightness(1.08); }
.cp-send-btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }
/* 停止态：生成中点击=请求停止（未开始的阶段不再执行） */
.cp-send-btn.stop {
    background: linear-gradient(135deg, #e5484d, #c93a3f);
    box-shadow: 0 0 0 3px rgba(229, 72, 77, .18);
}
.cp-send-btn.stop:hover { filter: brightness(1.1); }

/* ================================================================
   响应式
   ================================================================ */
@media (max-width: 1100px) {
    .cp-bubble { max-width: 78%; }
    .cp-msg.bot.wide .cp-bubble { max-width: 92%; }
}
@media (max-width: 780px) {
    #page-compose.active { height: calc(100vh - 110px); }
    .compose-topbar { flex-wrap: wrap; }
    .cp-fields { gap: 10px; }
    .cp-bubble { max-width: 86%; }
    .cp-group-grid { grid-template-columns: repeat(auto-fill, minmax(108px, 1fr)); }
}