/* ═══════════════════════════════════
   xueshu.css — ChatDLM 学术专用样式
   在 index.css 之后引入，不覆盖任何基础样式
   ═══════════════════════════════════ */

/* ═══ LAYOUT OVERRIDES ═══ */
.home-wrap{padding-top:8vh}
.search-box{max-width:800px}
.search-box-inner{position:relative}

/* ═══ ACADEMIC TOOLS GRID ═══ */
.xs-tools{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:24px;width:100%;max-width:800px}
.xs-tool{
  display:flex;align-items:center;gap:10px;
  padding:14px 16px;border-radius:var(--ae-radius-s);
  background:var(--ae-glass-bg);color:var(--ae-text-2);
  cursor:pointer;transition:all .15s;
}
.xs-tool:hover{background:var(--ae-glass-bg-hover);color:var(--ae-text-1)}
.xs-tool-ico{
  width:32px;height:32px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:0.875rem;flex-shrink:0;
}
.xs-tool-name{font-size:0.8125rem;font-weight:500}

@media(max-width:640px){
  .xs-tools{grid-template-columns:repeat(2,1fr)}
}

/* ═══ ADVANCED SEARCH PANEL ═══ */
.adv-panel{
  display:none;width:100%;margin-top:12px;
  background:var(--ae-sidebar-bg);
  border:1px solid var(--ae-glass-border);
  border-radius:16px;padding:24px 28px;
  animation:fadeIn .2s ease;
  position:absolute;top:100%;left:0;right:0;
  z-index:50;
  box-shadow:0 12px 48px rgb(0 0 0 / .4);
}
.adv-panel.visible{display:block}

.adv-row{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.adv-label{
  width:120px;flex-shrink:0;
  font-size:0.8125rem;font-weight:500;color:var(--ae-text-2);
  text-align:right;
}

.adv-fields{flex:1;display:flex;gap:10px;flex-wrap:wrap}

.adv-input{
  flex:1;min-width:160px;
  padding:10px 14px;border:none;
  border-radius:var(--ae-radius-s);
  background:var(--ae-glass-bg-hover);
  color:var(--ae-text-1);font-size:0.8125rem;font-family:inherit;
  outline:none;transition:background .15s;
}
.adv-input::placeholder{color:var(--ae-text-3)}
.adv-input:focus{background:var(--ae-glass-bg-active)}

.adv-select{
  padding:10px 14px;border:none;
  border-radius:var(--ae-radius-s);
  background:var(--ae-glass-bg-hover);
  color:var(--ae-text-1);font-size:0.8125rem;font-family:inherit;
  outline:none;cursor:pointer;
  -webkit-appearance:none;appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%239aa0a6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 12px center;
  padding-right:32px;
}

/* Tag-style input: label + input in one box */
.adv-input-tag{
  display:flex;align-items:center;gap:1px;
  padding:0 4px 0 14px;
  border-radius:var(--ae-radius-s);
  background:var(--ae-glass-bg-hover);
  flex:1;min-width:160px;
  transition:background .15s;
}
.adv-input-tag:focus-within{background:var(--ae-glass-bg-active)}
.adv-input-tag span{
  font-size:0.75rem;color:var(--ae-text-3);
  white-space:nowrap;flex-shrink:0;
  border-right:1px solid var(--ae-glass-border);
  padding-right:10px;margin-right:4px;
}
.adv-input-tag input{
  flex:1;padding:10px 10px;border:none;
  background:transparent;color:var(--ae-text-1);
  font-size:0.8125rem;font-family:inherit;outline:none;
}
.adv-input-tag input::placeholder{color:var(--ae-text-3)}

/* Year range inputs */
.adv-year{width:100px;text-align:center}
.adv-year-sep{color:var(--ae-text-3);font-size:0.8125rem;flex-shrink:0}

/* Radio group */
.adv-radio-group{display:flex;align-items:center;gap:20px}
.adv-radio{
  display:flex;align-items:center;gap:6px;
  cursor:pointer;font-size:0.8125rem;color:var(--ae-text-2);
}
.adv-radio input[type="radio"],
.adv-radio input[type="checkbox"]{
  width:16px;height:16px;margin:0;cursor:pointer;
  accent-color:var(--ae-accent);
}

/* Footer buttons */
.adv-foot{
  display:flex;align-items:center;justify-content:flex-end;
  gap:10px;margin-top:20px;padding-top:16px;
  border-top:1px solid var(--ae-glass-border);
}
.adv-foot-btn{
  padding:8px 20px;border-radius:8px;border:none;
  font-size:0.8125rem;font-weight:500;font-family:inherit;
  cursor:pointer;transition:all .15s;
}
.adv-reset{
  background:transparent;color:var(--ae-text-3);
  display:flex;align-items:center;gap:6px;margin-right:auto;
}
.adv-reset:hover{color:var(--ae-text-2)}
.adv-cancel{background:var(--ae-glass-bg-active);color:var(--ae-text-1)}
.adv-cancel:hover{background:var(--ae-glass-bg-hover)}
.adv-submit{background:var(--ae-accent);color:#fff}
.adv-submit:hover{opacity:.88}

/* ═══ MOBILE ═══ */
@media(max-width:960px){
  .adv-row{flex-direction:column;align-items:flex-start;gap:8px}
  .adv-label{width:auto;text-align:left}
  .adv-fields{width:100%}
  .adv-panel{padding:20px 16px}
  .adv-input-tag{min-width:0}
}