/* ===== 多巴胺配色 ===== */
:root{
  --pink:#FF4D9D;
  --orange:#FF8A3D;
  --yellow:#FFD93D;
  --mint:#3DDC97;
  --sky:#4DC9FF;
  --purple:#A66CFF;

  --bg:#FFFAFD;
  --surface:#FFFFFF;
  --text:#241B2F;
  --muted:#857A96;
  --line:#F0E6F4;
  --radius:18px;
  --shadow:0 8px 24px rgba(140,70,160,.10);
  --header-h:66px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}

body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent;
}

button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea{font-family:inherit;font-size:15px;color:var(--text)}

/* ===== 背景光斑 ===== */
.blobs{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.35}
.b1{width:340px;height:340px;background:var(--pink);top:-110px;left:-80px}
.b2{width:300px;height:300px;background:var(--sky);top:12%;right:-110px}
.b3{width:280px;height:280px;background:var(--yellow);bottom:-90px;left:22%}
.b4{width:260px;height:260px;background:var(--purple);bottom:8%;right:12%}

/* ===== 顶栏 ===== */
.topbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:12px;
  padding:10px 18px;
  min-height:var(--header-h);
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
}

.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  color:#fff;font-weight:800;font-size:18px;
  background:linear-gradient(135deg,var(--pink),var(--purple));
  box-shadow:0 4px 12px rgba(255,77,157,.35);
}
.brand h1{
  margin:0;font-size:19px;font-weight:800;letter-spacing:.5px;
  background:linear-gradient(90deg,var(--pink),var(--orange),var(--purple));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  white-space:nowrap;
}

.menu-btn{display:none}

.search-wrap{
  position:relative;flex:1 1 auto;max-width:420px;margin-left:auto;
}
.search-wrap input{
  width:100%;height:40px;padding:0 14px 0 38px;
  border:1.5px solid var(--line);border-radius:999px;
  background:#fff;outline:none;transition:.18s;
}
.search-wrap input:focus{border-color:var(--pink);box-shadow:0 0 0 4px rgba(255,77,157,.12)}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted)}

.btn-primary{
  display:inline-flex;align-items:center;gap:6px;
  height:40px;padding:0 18px;border-radius:999px;
  color:#fff;font-size:15px;font-weight:700;
  background:linear-gradient(135deg,var(--pink),var(--orange));
  box-shadow:0 6px 16px rgba(255,77,157,.32);
  transition:transform .15s, box-shadow .15s;
  flex:0 0 auto;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 9px 22px rgba(255,77,157,.42)}
.btn-primary:active{transform:translateY(1px) scale(.98)}

.btn-ghost{
  height:40px;padding:0 18px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--muted);
  background:#F6F1F9;transition:.15s;
}
.btn-ghost:hover{background:#EDE5F2;color:var(--text)}

.icon-btn{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;color:var(--muted);
  background:#F6F1F9;transition:.15s;flex:0 0 auto;
}
.icon-btn:hover{background:#EDE5F2;color:var(--text)}

/* ===== 布局 ===== */
.layout{
  display:flex;align-items:flex-start;
  max-width:1180px;margin:0 auto;padding:18px;
  gap:18px;
}

.sidebar{
  flex:0 0 224px;
  position:sticky;top:calc(var(--header-h) + 18px);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:16px 14px;
  box-shadow:var(--shadow);
  max-height:calc(100vh - var(--header-h) - 36px);
  overflow:auto;
}
.side-head{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12px;font-weight:800;letter-spacing:2px;color:var(--muted);
  margin-bottom:10px;padding-left:6px;
}
.side-close{display:none}

.tag-nav{display:flex;flex-direction:column;gap:4px}
.nav-item{
  display:flex;align-items:center;gap:9px;
  width:100%;padding:9px 10px;border-radius:12px;
  font-size:14.5px;font-weight:600;text-align:left;
  transition:.15s;color:var(--text);
}
.nav-item:hover{background:#F8F2FB}
.nav-item .dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto;background:var(--muted)}
.nav-item .name{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-item .num{
  font-size:12px;font-weight:700;color:var(--muted);
  background:#F4EEF8;border-radius:999px;padding:1px 8px;
}
.nav-item.active{
  background:linear-gradient(135deg,rgba(255,77,157,.14),rgba(166,108,255,.14));
  color:var(--pink);
}
.nav-item.active .num{background:#fff;color:var(--pink)}

.side-foot{
  margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);
  display:flex;flex-wrap:wrap;gap:6px;
}
.link-btn{font-size:12.5px;color:var(--muted);padding:4px 8px;border-radius:8px;font-weight:600}
.link-btn:hover{background:#F6F1F9;color:var(--purple)}
.tip{width:100%;margin:4px 0 0;font-size:11.5px;color:#B3A9BF;padding-left:6px}

.sync-status{width:100%;font-size:12px;font-weight:700;padding:4px 6px;margin-top:2px}
.sync-code-row{display:flex;align-items:center;gap:10px}
.sync-code-row code{
  flex:1 1 auto;font-size:18px;font-weight:800;letter-spacing:2px;
  padding:8px 12px;border-radius:12px;background:#F6F1F9;color:var(--purple);
  text-align:center;user-select:all;word-break:break-all;
}

.scrim{display:none;position:fixed;inset:0;background:rgba(35,20,50,.38);z-index:55;backdrop-filter:blur(2px)}
.scrim.show{display:block}

/* ===== 主内容 ===== */
.content{flex:1 1 auto;min-width:0}
.content-head{display:flex;align-items:baseline;gap:10px;margin:2px 0 14px}
.content-head h2{margin:0;font-size:20px;font-weight:800}
.count-badge{
  font-size:12.5px;font-weight:700;color:var(--purple);
  background:rgba(166,108,255,.14);border-radius:999px;padding:3px 10px;
}

.card-list{display:flex;flex-direction:column;gap:14px}

.card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:16px 18px;
  box-shadow:var(--shadow);
  transition:box-shadow .2s, transform .2s;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:5px;
  background:var(--accent,var(--pink));
}
.card:hover{box-shadow:0 12px 28px rgba(140,70,160,.15)}
.card.open{box-shadow:0 14px 34px rgba(140,70,160,.18)}

.card-top{display:flex;align-items:center;gap:8px;margin-bottom:8px;flex-wrap:wrap}
.card-top .date{font-size:12px;color:var(--muted);font-weight:600}
.card-tags{display:flex;gap:6px;flex-wrap:wrap;flex:1 1 auto}
.ctag{
  font-size:11.5px;font-weight:700;padding:2px 9px;border-radius:999px;
  color:#fff;background:var(--pink);
}
.del-btn{
  margin-left:auto;font-size:12.5px;font-weight:700;color:#C3B8CF;
  padding:4px 8px;border-radius:8px;transition:.15s;
}
.del-btn:hover{color:#FF3B6B;background:#FFEEF2}

.q{
  margin:0 0 12px;font-size:15.5px;line-height:1.65;
  white-space:pre-wrap;word-break:break-word;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card.open .q{display:block;-webkit-line-clamp:unset;overflow:visible}

.meta-bar{
  display:flex;align-items:center;gap:10px;
  background:#FBF7FD;border:1px solid var(--line);
  border-radius:12px;padding:8px 10px 8px 12px;
}
.paper{
  display:flex;align-items:center;gap:6px;min-width:0;
  font-size:13px;font-weight:700;color:var(--muted);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.paper.empty{color:#C3B8CF;font-weight:600}
.view-btn{
  margin-left:auto;display:inline-flex;align-items:center;gap:4px;
  font-size:13.5px;font-weight:800;color:var(--pink);
  padding:5px 12px;border-radius:999px;background:rgba(255,77,157,.12);
  transition:.15s;flex:0 0 auto;
}
.view-btn:hover{background:rgba(255,77,157,.2)}
.chev{display:inline-block;transition:transform .22s;font-size:15px;line-height:1}
.card.open .chev{transform:rotate(90deg)}

.detail{
  max-height:0;opacity:0;overflow:hidden;
  transition:max-height .28s ease, opacity .22s ease, margin-top .2s ease;
}
.card.open .detail{max-height:2400px;opacity:1;margin-top:12px}
.block{border-radius:12px;padding:10px 12px;margin-bottom:8px}
.block:last-child{margin-bottom:0}
.block.answer{background:rgba(61,220,151,.13);border-left:4px solid var(--mint)}
.block.analysis{background:rgba(77,201,255,.13);border-left:4px solid var(--sky)}
.block-title{font-size:12px;font-weight:800;letter-spacing:1px;margin-bottom:4px}
.block.answer .block-title{color:#12A36A}
.block.analysis .block-title{color:#1B93C8}
.block-body{font-size:14.5px;line-height:1.7;white-space:pre-wrap;word-break:break-word;color:#3A2F4A}
.block-body.placeholder{color:#B3A9BF}

/* ===== 空状态 ===== */
.empty{
  text-align:center;padding:64px 20px;
  background:var(--surface);border:1px dashed var(--line);
  border-radius:var(--radius);
}
.empty-emoji{font-size:46px}
.empty-title{margin:12px 0 4px;font-size:16px;font-weight:800}
.empty-sub{margin:0;font-size:13.5px;color:var(--muted)}

/* ===== FAB ===== */
.fab{
  display:none;position:fixed;right:18px;bottom:calc(20px + env(safe-area-inset-bottom));
  width:56px;height:56px;border-radius:50%;color:#fff;
  background:linear-gradient(135deg,var(--pink),var(--orange));
  box-shadow:0 10px 24px rgba(255,77,157,.45);z-index:40;
  place-items:center;
}

/* ===== 弹窗 ===== */
.modal{
  position:fixed;inset:0;z-index:80;
  display:none;align-items:center;justify-content:center;
  padding:20px;background:rgba(35,20,50,.42);
  backdrop-filter:blur(3px);
  animation:fade .18s ease;
}
.modal:not([hidden]){display:flex}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal-panel{
  width:100%;max-width:600px;max-height:88vh;
  display:flex;flex-direction:column;
  background:#fff;border-radius:24px;
  box-shadow:0 24px 60px rgba(80,30,110,.28);
  animation:pop .22s cubic-bezier(.2,.9,.3,1.2);
  overflow:hidden;
}
@keyframes pop{from{transform:translateY(18px) scale(.97);opacity:0}to{transform:none;opacity:1}}
.modal-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 18px;border-bottom:1px solid var(--line);
  background:linear-gradient(120deg,rgba(255,77,157,.10),rgba(166,108,255,.10));
}
.modal-head h3{margin:0;font-size:17px;font-weight:800}
.modal-body{padding:16px 18px;overflow:auto;flex:1 1 auto}
.modal-foot{
  display:flex;justify-content:flex-end;gap:10px;
  padding:14px 18px calc(14px + env(safe-area-inset-bottom));
  border-top:1px solid var(--line);background:#FDFAFF;
}

.field{display:block;margin-bottom:14px}
.field .label{display:block;font-size:13px;font-weight:800;color:var(--muted);margin-bottom:6px}
.field .label i{color:var(--pink);font-style:normal}
.field textarea,.field input[type=text]{
  width:100%;padding:11px 13px;border-radius:13px;
  border:1.5px solid var(--line);background:#FDFAFF;
  outline:none;resize:vertical;line-height:1.6;transition:.15s;
}
.field textarea:focus,.field input[type=text]:focus{
  border-color:var(--pink);background:#fff;box-shadow:0 0 0 4px rgba(255,77,157,.12);
}
.shake{animation:shake .32s}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}

.tag-picker{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.tchip{
  font-size:13px;font-weight:700;padding:6px 12px;border-radius:999px;
  border:1.5px solid var(--line);background:#FDFAFF;color:var(--muted);transition:.15s;
}
.tchip:hover{border-color:#E3D3EA}
.tchip.on{
  color:#fff;border-color:transparent;
  background:var(--c,var(--pink));
  box-shadow:0 4px 10px rgba(140,70,160,.2);
}
.tag-new{
  width:100%;padding:9px 13px;border-radius:13px;font-size:13.5px;
  border:1.5px dashed #E3D3EA;background:#fff;outline:none;
}
.tag-new:focus{border-color:var(--purple);border-style:solid}
.hint{margin:6px 0 0;font-size:11.5px;color:#B3A9BF}

/* ===== 响应式 ===== */
@media (max-width:1000px){
  .layout{padding:14px}
  .sidebar{flex-basis:196px}
}

@media (max-width:860px){
  .menu-btn{display:grid}
  .sidebar{
    position:fixed;left:0;top:0;bottom:0;width:78vw;max-width:300px;
    flex:none;z-index:60;border-radius:0 22px 22px 0;
    padding-top:18px;max-height:none;
    transform:translateX(-102%);transition:transform .28s cubic-bezier(.3,.8,.3,1);
    box-shadow:18px 0 50px rgba(90,40,120,.18);
  }
  .sidebar.open{transform:none}
  .side-close{display:grid}
  .layout{padding:14px 14px 90px;gap:0}
  .fab{display:grid}
}

@media (max-width:680px){
  .topbar{padding:9px 14px;gap:10px;flex-wrap:wrap}
  .brand h1{font-size:17px}
  .search-wrap{order:3;flex:0 0 100%;max-width:none;margin-left:0}
  .btn-primary{padding:0 14px;font-size:14px}
  .btn-primary span{display:none}
  .btn-primary{padding:0 12px}
  .content-head h2{font-size:18px}
  .card{padding:14px 15px}
  .q{font-size:15px}
  .modal{padding:0;align-items:flex-end}
  .modal-panel{
    max-width:none;border-radius:24px 24px 0 0;max-height:92vh;
    animation:sheet .26s cubic-bezier(.2,.9,.3,1);
  }
  @keyframes sheet{from{transform:translateY(60px);opacity:0}to{transform:none;opacity:1}}
}

@media (max-width:400px){
  .logo{width:30px;height:30px;font-size:16px}
  .brand h1{font-size:16px}
  .meta-bar{padding:7px 8px 7px 10px}
}