/* ============ 内容生成工作台 · content-studio ============ */
:root{
  --brand:#2563eb;
  --brand-soft:#eaf0ff;
  --brand-deep:#1d4ed8;
  --bg:#f4f5f7;
  --card:#ffffff;
  --text:#1a1f2c;
  --text-2:#5b6470;
  --text-3:#98a0ab;
  --line:#eceef2;
  --amber:#b45309;
  --amber-soft:#fff7e8;
  --shadow:0 6px 24px rgba(20,30,60,.07);
  --shadow-sm:0 2px 10px rgba(20,30,60,.05);
  --radius:14px;
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
textarea,input,select{font-family:inherit;font-size:14px;color:var(--text);outline:none}
::selection{background:var(--brand);color:#fff}

/* 顶栏 */
.topbar{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
}
.topbar-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;gap:14px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:19px;letter-spacing:.4px}
.logo .dot{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand),#7c3aed);display:grid;place-items:center;color:#fff;font-size:14px}
.logo-img{width:30px;height:30px;border-radius:8px;object-fit:cover;box-shadow:0 1px 4px rgba(20,30,60,.15)}

/* 内容底部品牌页脚（龙小券 logo） */
.brand-footer{
  display:flex;align-items:center;gap:11px;
  margin:-6px 0 18px;padding:11px 14px;
  border:1px solid #eef1f6;border-radius:11px;
  background:linear-gradient(180deg,#fbfcff,#f5f8ff);
}
.brand-footer .bf-logo{width:38px;height:38px;border-radius:10px;object-fit:cover;flex-shrink:0;box-shadow:0 2px 6px rgba(20,30,60,.12)}
.brand-footer .bf-txt{display:flex;flex-direction:column;line-height:1.35;min-width:0}
.brand-footer .bf-txt b{font-size:13.5px;color:var(--text);font-weight:700}
.brand-footer .bf-txt span{font-size:11.5px;color:var(--text-3)}
.brand-footer .bf-link{margin-left:auto;font-size:12px;font-weight:700;color:var(--brand-deep);background:var(--brand-soft);padding:7px 11px;border-radius:9px;white-space:nowrap;flex-shrink:0;transition:.15s}
.brand-footer .bf-link:hover{background:var(--brand);color:#fff}
.engine-tag{
  font-size:12px;font-weight:600;color:var(--amber);background:var(--amber-soft);
  padding:4px 10px;border-radius:14px;border:1px solid #f5d99a;
}
.topbar .spacer{margin-left:auto}
.topbar .btn-line{padding:7px 14px;border-radius:18px;font-size:13px;font-weight:600;border:1px solid var(--line);color:var(--text-2)}
.topbar .btn-line:hover{border-color:var(--brand);color:var(--brand)}

/* 布局 */
main{max-width:var(--maxw);margin:0 auto;padding:22px 24px 60px}
.layout{display:grid;grid-template-columns:380px 1fr;gap:20px;align-items:start}
.panel{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:20px}
.panel + .panel{margin-top:0}
h2.section-title{font-size:15px;font-weight:700;margin-bottom:4px;display:flex;align-items:center;gap:8px}
.section-title .num{width:20px;height:20px;border-radius:6px;background:var(--brand-soft);color:var(--brand-deep);font-size:12px;display:grid;place-items:center;font-weight:700}
.section-hint{font-size:12.5px;color:var(--text-3);margin-bottom:14px}

/* 表单 */
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--text-2)}
.field .req{color:var(--brand)}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:9px;background:#fbfcfd;
  padding:10px 12px;transition:.15s;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px var(--brand-soft)}
.field textarea{resize:vertical;line-height:1.6}
.preset-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.preset-chip{font-size:12px;padding:5px 11px;border-radius:14px;background:var(--bg);border:1px solid var(--line);color:var(--text-2);transition:.15s}
.preset-chip:hover{border-color:var(--brand);color:var(--brand)}
.style-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.platform-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(86px,1fr));gap:6px;margin-top:4px}
.style-opt{padding:8px 6px;border:1px solid var(--line);border-radius:8px;background:#fbfcfd;font-size:12.5px;font-weight:600;text-align:center;color:var(--text-2);transition:.15s;cursor:pointer;user-select:none}
.style-opt:hover{border-color:var(--brand)}
.style-opt.active{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-deep)}

/* 生成按钮 */
.gen-btn{
  width:100%;padding:13px;border-radius:11px;font-size:15px;font-weight:700;
  background:linear-gradient(135deg,var(--brand),#7c3aed);color:#fff;transition:.15s;
  display:flex;align-items:center;justify-content:center;gap:8px;
}
.gen-btn:hover{filter:brightness(1.05);transform:translateY(-1px)}
.gen-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}
.gen-btn .spin{width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite;display:none}
.gen-btn.loading .spin{display:block}
@keyframes sp{to{transform:rotate(360deg)}}

/* 预览区 */
.preview-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.preview-head .badge{font-size:12px;font-weight:600;color:var(--brand-deep);background:var(--brand-soft);padding:4px 10px;border-radius:12px}
.preview-empty{text-align:center;padding:50px 20px;color:var(--text-3)}
.preview-empty .ico{font-size:34px;opacity:.55;margin-bottom:10px}
.preview-empty p{font-size:14px}

.titles-block{margin-bottom:18px}
.titles-block .label{font-size:12.5px;font-weight:600;color:var(--text-2);margin-bottom:8px}
.title-cand{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);border-radius:9px;margin-bottom:8px;cursor:pointer;transition:.15s;background:#fbfcfd}
.title-cand:hover{border-color:var(--brand)}
.title-cand.selected{border-color:var(--brand);background:var(--brand-soft)}
.title-cand .radio{width:16px;height:16px;border:2px solid var(--text-3);border-radius:50%;flex-shrink:0;margin-top:2px;transition:.15s;position:relative}
.title-cand.selected .radio{border-color:var(--brand)}
.title-cand.selected .radio::after{content:"";position:absolute;inset:2px;border-radius:50%;background:var(--brand)}
.title-cand .txt{font-size:14.5px;font-weight:600;line-height:1.5}

.block{margin-bottom:18px}
.block .label,.titles-block .label,.pv-switch,.cover-block .label{user-select:none;-webkit-user-select:none}
.block .label{font-size:12.5px;font-weight:600;color:var(--text-2);margin-bottom:8px;display:flex;align-items:center;justify-content:space-between}
.block .label .edit{font-size:12px;color:var(--brand);cursor:pointer;font-weight:600}
.editable{font-size:14.5px;line-height:1.75;color:#2a3140;border:1px solid transparent;border-radius:8px;padding:10px 12px;white-space:pre-wrap;background:#fbfcfd}
.editable:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px var(--brand-soft);outline:none}
.tags-edit{display:flex;flex-wrap:wrap;gap:6px}
.tag-pill{font-size:12.5px;padding:4px 10px;border-radius:14px;background:var(--brand-soft);color:var(--brand-deep);font-weight:600;display:flex;align-items:center;gap:4px}
.tag-pill .x{cursor:pointer;opacity:.6}
.tag-pill .x:hover{opacity:1}
.tag-add{font-size:12.5px;padding:4px 10px;border-radius:14px;border:1px dashed var(--line);color:var(--text-3)}
.tag-add:focus{border-color:var(--brand);color:var(--brand)}
.cover-box{width:100%;aspect-ratio:5/3;object-fit:cover;border-radius:10px;background:linear-gradient(135deg,#e7ecf3,#d9e0eb);transition:opacity .4s;cursor:pointer}
.cover-note{font-size:11.5px;color:var(--text-3);margin-top:6px}
.cover-block .btn-line{padding:5px 12px;border-radius:14px;font-size:12px;font-weight:600;border:1px solid var(--line);color:var(--brand);background:#fff;flex-shrink:0}
.cover-block .btn-line:hover{border-color:var(--brand);background:var(--brand-soft)}
.cover-block .btn-line:disabled{opacity:.55;cursor:default}

/* 操作条 */
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.act{display:flex;align-items:center;gap:6px;padding:9px 16px;border-radius:20px;font-size:13.5px;font-weight:600;background:var(--bg);color:var(--text-2);transition:.15s;border:1px solid var(--line)}
.act:hover{border-color:var(--brand);color:var(--brand)}
.act.primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.act.primary:hover{filter:brightness(1.05)}
.act.save{margin-left:auto}

/* 素材库 */
.library{margin-top:26px}
.lib-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.lib-head h3{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px}
.lib-head .count{font-size:13px;color:var(--text-3);font-weight:500}
.lib-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.lib-card{background:var(--card);border-radius:11px;box-shadow:var(--shadow-sm);overflow:hidden;cursor:pointer;transition:.15s;border:1px solid var(--line)}
.lib-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.lib-card .cv{width:100%;aspect-ratio:5/3;object-fit:cover;background:linear-gradient(135deg,#e7ecf3,#d9e0eb)}
.lib-card .bd{padding:12px 13px}
.lib-card .tt{font-size:14px;font-weight:700;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.lib-card .meta{font-size:11.5px;color:var(--text-3);margin-top:7px;display:flex;align-items:center;gap:8px}
.lib-card .del{font-size:12px;color:var(--text-3);cursor:pointer;padding:3px 8px;border-radius:6px}
.lib-card .del:hover{background:#fff0f3;color:#e24b4a}
.lib-empty{grid-column:1/-1;text-align:center;padding:40px 20px;color:var(--text-3);font-size:14px}

/* AI 思考状态回显（生成中显示，完成隐藏） */
.think-box{margin-bottom:16px;padding:14px 16px;border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:10px;background:linear-gradient(180deg,#fbfcff,#f6f8ff);animation:thinkIn .25s ease}
@keyframes thinkIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
.think-row{display:flex;align-items:center;gap:10px}
.think-spinner{width:14px;height:14px;border:2px solid var(--brand-soft);border-top-color:var(--brand);border-radius:50%;animation:sp .7s linear infinite;flex-shrink:0}
.think-title{font-size:13.5px;font-weight:700;color:var(--brand-deep)}
.think-elapsed{margin-left:auto;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}
.think-log{margin-top:9px;padding-top:8px;border-top:1px dashed var(--line);display:flex;flex-direction:column;gap:4px;max-height:120px;overflow:hidden}
.think-line{font-size:12px;color:var(--text-2);animation:thinkLineIn .3s ease}
.think-line:last-child{color:var(--brand-deep);font-weight:600}
@keyframes thinkLineIn{from{opacity:0;transform:translateX(-6px)}to{opacity:1;transform:translateX(0)}}

/* 龙小券实时券源卡片 */
.coupon-sec{background:#fffdf6;border:1px solid #f3e8cf;border-radius:11px;padding:12px 14px;margin-bottom:16px}
.coupon-card{display:flex;gap:10px;align-items:center;padding:9px 10px;border:1px solid var(--line);border-radius:10px;margin-bottom:8px;background:#fff}
.cc-img{width:64px;height:64px;object-fit:cover;border-radius:8px;flex-shrink:0;background:var(--bg)}

/* 手机 / 网页预览切换 */
.pv-switch{margin-left:auto;display:flex;border:1px solid var(--line);border-radius:16px;overflow:hidden;flex-shrink:0}
.pv-switch button{padding:5px 13px;font-size:12px;font-weight:600;color:var(--text-2);background:#fff;transition:.15s}
.pv-switch button.active{background:var(--brand);color:#fff}

/* 手机模拟预览：375px 机身框，券卡片改大图竖版 */
#previewBody.phone{
  max-width:375px;margin:0 auto;background:#fff;
  border:10px solid #1a1f2c;border-radius:30px;
  padding:18px 14px;box-shadow:0 12px 32px rgba(20,30,60,.14);
}
#previewBody.phone .title-cand .txt{font-size:16px;line-height:1.5}
#previewBody.phone .editable{font-size:15.5px;line-height:1.8}
#previewBody.phone .coupon-card{display:block;padding:0;border:none;background:transparent;margin-bottom:14px}
#previewBody.phone .coupon-card .cc-img{width:100%;height:170px;border-radius:10px;margin-bottom:8px}
#previewBody.phone .coupon-card .cc-tt{font-size:15px;white-space:normal;line-height:1.5}
#previewBody.phone .coupon-card .cc-meta{margin-top:6px;font-size:13px}
#previewBody.phone .coupon-card .cc-go{display:block;text-align:center;margin-top:9px;padding:10px;font-size:14px;border-radius:22px}
#previewBody.phone .brand-footer{flex-wrap:wrap}
#previewBody.phone .cover-box{border-radius:12px}
.cc-bd{flex:1;min-width:0}
.cc-tt{font-size:12.5px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cc-meta{display:flex;gap:8px;align-items:center;margin-top:4px;font-size:11.5px;flex-wrap:wrap}
.cc-plat{color:var(--text-3)}
.cc-off{color:#c2410c;font-weight:700}
.cc-price{color:#b91c1c;font-weight:700}
.cc-orig{color:var(--text-3);text-decoration:line-through}
.cc-sale{color:var(--text-3)}
.cc-go{font-size:12px;font-weight:700;color:var(--brand-deep);background:var(--brand-soft);padding:6px 10px;border-radius:8px;text-decoration:none;flex-shrink:0}
.cc-go.nolink{color:var(--text-3);background:var(--bg)}

/* 推广段落+券源交替排版 */
.coupon-inline{margin:-8px 0 18px;padding:0 2px}
.coupon-inline .ci-label{font-size:11.5px;font-weight:700;color:#c2410c;margin:0 0 6px 2px}
.coupon-inline .coupon-card{margin-bottom:0}

/* 券源搜索与勾选面板 */
.coupon-search-row{display:flex;gap:8px}
.coupon-search-row input{flex:1}
.coupon-search-row .btn-line{flex-shrink:0;padding:8px 16px;border-radius:9px;border:1px solid var(--line);color:var(--text-2);font-weight:600;background:#fff}
.coupon-search-row .btn-line:hover{border-color:var(--brand);color:var(--brand)}
.coupon-search-row .btn-line:disabled{opacity:.55;cursor:default}
.coupon-pick-list{margin-top:8px;max-height:260px;overflow-y:auto;border:1px solid var(--line);border-radius:9px;background:#fbfcfd}
.coupon-pick-list:has(.cp-empty){border-style:dashed;background:transparent}
.cp-empty{padding:14px 12px;font-size:12.5px;color:var(--text-3, #9aa1ad);text-align:center}
.cp-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-bottom:1px solid var(--line);cursor:pointer;transition:background .15s}
.cp-item:last-child{border-bottom:none}
.cp-item:hover{background:var(--brand-soft)}
.cp-item.picked{background:var(--brand-soft)}
.cp-item input[type=checkbox]{width:16px;height:16px;accent-color:var(--brand);flex-shrink:0;cursor:pointer}
.cp-img{width:44px;height:44px;border-radius:8px;object-fit:cover;flex-shrink:0;background:#eef1f5}
.cp-info{flex:1;min-width:0}
.cp-tt{font-size:12.5px;font-weight:600;color:var(--text-1, #1c2333);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cp-meta{display:flex;gap:8px;align-items:center;margin-top:3px;font-size:11.5px;flex-wrap:wrap}
.cp-meta .cc-plat{color:var(--brand-deep);font-weight:700}
.cp-meta .cc-off{color:#e02020;font-weight:700}
.cp-meta .cc-price{color:#e02020;font-weight:700}
.cp-meta .cc-sale{color:var(--text-3, #9aa1ad)}
.cp-summary{margin-top:8px;font-size:12.5px;color:var(--brand-deep);background:var(--brand-soft);border-radius:8px;padding:7px 10px}
.cp-summary b{font-size:14px}
.cp-clear{float:right;color:var(--text-2);cursor:pointer;text-decoration:underline}
.cp-clear:hover{color:#e02020}

/* toast */
.toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%) translateY(20px);background:#1a1f2c;color:#fff;padding:11px 22px;border-radius:24px;font-size:13.5px;font-weight:600;z-index:200;opacity:0;transition:.25s;pointer-events:none;box-shadow:0 8px 30px rgba(0,0,0,.2)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

@media (max-width:820px){
  .layout{grid-template-columns:1fr}
  .lib-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:520px){
  main{padding:16px}
  .lib-grid{grid-template-columns:1fr}
  .style-grid{grid-template-columns:repeat(2,1fr)}
}