/* ============================================================
 * naive-ui 视觉复刻 —— 与 profile.pku.edu.cn 的主题覆盖保持一致
 * 取值来自 packages/ui/app/app.vue 的 themeOverrides
 * ============================================================ */

:root {
  /* PKU Red */
  --red900: #5C0000;
  --red800: #7A0011;
  --red700: #8B0012;   /* primaryColor */
  --red600: #A31621;   /* primaryColorHover */
  --red100: #FEF2F2;
  --red50:  #FFF7F7;
  /* PKU Gold */
  --gold500: #C5A572;
  --gold100: #FBF8F3;
  /* 语义色（注意：error 是深紫，不是红，避免和主色混淆） */
  --error: #6B21A8;
  --success: #059669;
  --warning: #B45309;
  --info: #0369A1;

  --body: #FAFBFC;
  --card: #FFFFFF;
  --text: rgb(51, 54, 57);
  --text-2: rgb(118, 124, 130);
  --text-3: rgb(154, 160, 166);
  --border: rgb(239, 239, 245);
  --border-2: rgb(224, 224, 230);

  --radius: 10px;
  --radius-sm: 6px;
  --shadow1: 0 2px 8px rgba(0,0,0,.06);
  --shadow2: 0 4px 16px rgba(0,0,0,.08);
  --shadow3: 0 8px 24px rgba(0,0,0,.10);
  --card-shadow: 0 4px 20px rgba(0,0,0,.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: v-sans, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei",
               "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  background:
    linear-gradient(rgba(139,0,18,.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,0,18,.015) 1px, transparent 1px),
    radial-gradient(ellipse at top right, rgba(139,0,18,.04) 0%, transparent 50%),
    radial-gradient(ellipse at bottom left, rgba(197,165,114,.03) 0%, transparent 50%),
    #fafbfc;
  background-size: 32px 32px, 32px 32px, auto, auto, auto;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 顶部导航 ---------- */
.app-header {
  height: 56px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  color: #fff;
  background: linear-gradient(135deg, rgba(122,0,17,.98) 0%, rgba(139,0,18,.98) 40%, rgba(92,0,0,.98) 100%);
  border-bottom: 1px solid rgba(255,255,255,.08);
  box-shadow: 0 4px 20px rgba(92,0,0,.25), 0 1px 3px rgba(0,0,0,.1), inset 0 1px 0 rgba(255,255,255,.1);
  position: relative;
  z-index: 10;
}
.app-header .brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 500; letter-spacing: .5px; }
.app-header .brand .seal {
  width: 30px; height: 30px; border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.75);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; letter-spacing: 0;
}
.app-header .spacer { flex: 1; }
.app-header .usermenu { display: flex; align-items: center; gap: 14px; font-size: 14px; }
.app-header .usermenu .u { display: flex; align-items: center; gap: 7px; cursor: pointer; opacity: .95; }
.app-header .usermenu .u:hover { opacity: 1; }
.avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.35);
  display: flex; align-items: center; justify-content: center; font-size: 12px;
}

/* ---------- 页面容器 ---------- */
.page { width: 100%; max-width: 1280px; margin: 16px auto; padding: 0 8px; }
.pagehead { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.pagehead .t { font-size: 18px; font-weight: 700; }
.pagehead .flex1 { flex: 1; }

.panel { background: #fff; border-radius: 12px; padding: 16px; box-shadow: var(--shadow1); }
.panel-head { display: flex; align-items: center; margin-bottom: 8px; gap: 8px; }
.panel-head .t { font-size: 18px; font-weight: 700; }
.panel-head .flex1 { flex: 1; }

/* ---------- NTabs type=segment ---------- */
.n-tabs-seg {
  display: flex; background: rgb(243,243,245); border-radius: var(--radius);
  padding: 4px; gap: 4px; margin-bottom: 16px;
}
.n-tabs-seg .tab {
  flex: 1; text-align: center; padding: 6px 12px; border-radius: 8px;
  cursor: pointer; font-size: 14px; color: var(--text-2); transition: .2s; user-select: none;
}
.n-tabs-seg .tab:hover { color: var(--text); }
.n-tabs-seg .tab.on { background: #fff; color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.08); font-weight: 500; }

/* ---------- NTabs type=line ---------- */
.n-tabs-line { border-bottom: 1px solid var(--border); display: flex; gap: 0; margin-bottom: 16px; }
.n-tabs-line .tab {
  padding: 10px 16px; cursor: pointer; color: var(--text-2); font-size: 14px;
  border-bottom: 2px solid transparent; margin-bottom: -1px; transition: .2s; white-space: nowrap;
}
.n-tabs-line .tab:hover { color: var(--red700); }
.n-tabs-line .tab.on { color: var(--red700); border-bottom-color: var(--red700); font-weight: 500; }

/* ---------- NButton ---------- */
.n-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 34px; padding: 0 14px; border-radius: 8px;
  border: 1px solid var(--border-2); background: #fff; color: var(--text);
  font-family: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: .2s; white-space: nowrap; text-decoration: none;
}
.n-btn:hover { color: var(--red600); border-color: var(--red600); }
.n-btn:active { color: var(--red900); border-color: var(--red900); }
.n-btn.sm { height: 28px; padding: 0 10px; font-size: 13px; border-radius: 6px; }
.n-btn.tiny { height: 22px; padding: 0 8px; font-size: 12px; border-radius: 4px; }
.n-btn.lg { height: 40px; padding: 0 20px; font-size: 15px; }
.n-btn.primary { background: var(--red700); border-color: var(--red700); color: #fff; }
.n-btn.primary:hover { background: var(--red600); border-color: var(--red600); color: #fff; }
.n-btn.info { background: var(--info); border-color: var(--info); color: #fff; }
.n-btn.info:hover { filter: brightness(1.12); color: #fff; }
.n-btn.success { background: var(--success); border-color: var(--success); color: #fff; }
.n-btn.success:hover { filter: brightness(1.1); color: #fff; }
.n-btn.warning { background: var(--warning); border-color: var(--warning); color: #fff; }
.n-btn.warning:hover { filter: brightness(1.1); color: #fff; }
.n-btn.quaternary { border-color: transparent; background: transparent; }
.n-btn.quaternary:hover { background: rgba(0,0,0,.04); border-color: transparent; color: var(--red600); }
.n-btn:disabled { opacity: .45; cursor: not-allowed; }
.n-btn:disabled:hover { color: var(--text); border-color: var(--border-2); }
.btnbar { display: flex; gap: 8px; align-items: center; }

/* ---------- NTag ---------- */
.n-tag {
  display: inline-flex; align-items: center; height: 24px; padding: 0 8px;
  border-radius: var(--radius-sm); font-size: 13px; line-height: 1;
  background: rgba(0,0,0,.04); color: var(--text-2); border: 1px solid transparent; white-space: nowrap;
}
.n-tag.sm { height: 22px; font-size: 12px; padding: 0 7px; }
.n-tag.tiny { height: 18px; font-size: 11px; padding: 0 5px; border-radius: 3px; }
.n-tag.success { background: rgba(5,150,105,.1);  color: var(--success); border-color: rgba(5,150,105,.28); }
.n-tag.info    { background: rgba(3,105,161,.1);  color: var(--info);    border-color: rgba(3,105,161,.28); }
.n-tag.warning { background: rgba(180,83,9,.1);   color: var(--warning); border-color: rgba(180,83,9,.28); }
.n-tag.error   { background: rgba(107,33,168,.1); color: var(--error);   border-color: rgba(107,33,168,.28); }
.n-tag.primary { background: rgba(139,0,18,.08);  color: var(--red700);  border-color: rgba(139,0,18,.25); }

/* ---------- NCard ---------- */
.n-card {
  background: #fff; border-radius: 16px; box-shadow: var(--card-shadow);
  border: 1px solid rgba(0,0,0,.02);
}
.n-card.sm { border-radius: 10px; box-shadow: var(--shadow1); }
.n-card > .head {
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  font-size: 16px; font-weight: 600; display: flex; align-items: center; gap: 10px;
}
.n-card > .body { padding: 16px 20px; }
.n-card.sm > .body { padding: 12px 14px; }
.n-card > .foot { padding: 12px 20px; border-top: 1px solid var(--border); }

/* 统计卡 */
.statgrid { display: grid; gap: 12px; margin-bottom: 16px; }
.statgrid.c5 { grid-template-columns: repeat(5, 1fr); }
.statgrid.c3 { grid-template-columns: repeat(3, 1fr); }
.statgrid.c2 { grid-template-columns: repeat(2, 1fr); }
.stat { background:#fff; border-radius:10px; box-shadow: var(--shadow1); padding: 12px; text-align: center; border:1px solid rgba(0,0,0,.02); }
.stat .n { font-size: 24px; font-weight: 700; line-height: 1.3; }
.stat .l { font-size: 13px; color: var(--text-2); }
.stat.clickable { cursor: pointer; transition: .18s; }
.stat.clickable:hover { box-shadow: var(--shadow2); transform: translateY(-1px); }
.stat.on { outline: 2px solid var(--red700); }
.c-gray { color: var(--text-2); } .c-gray4 { color: var(--text-3); }
.c-green { color: var(--success); } .c-blue { color: var(--info); }
.c-orange { color: var(--warning); } .c-red { color: var(--red700); } .c-purple { color: var(--error); }

/* ---------- NAlert ---------- */
.n-alert { border-radius: var(--radius); padding: 12px 14px; margin-bottom: 16px; border: 1px solid transparent; font-size: 14px; }
.n-alert .ah { font-weight: 600; margin-bottom: 4px; }
.n-alert.info    { background: rgba(3,105,161,.06);  border-color: rgba(3,105,161,.25); }
.n-alert.success { background: rgba(5,150,105,.07);  border-color: rgba(5,150,105,.28); }
.n-alert.warning { background: rgba(180,83,9,.07);   border-color: rgba(180,83,9,.28); }
.n-alert.error   { background: rgba(107,33,168,.06); border-color: rgba(107,33,168,.25); }

/* ---------- NDataTable ---------- */
.n-table-wrap { border-radius: 12px; overflow: auto; border: 1px solid var(--border); background: #fff; }
table.n-table { width: 100%; border-collapse: collapse; font-size: 14px; }
table.n-table th {
  background: #F8F9FA; text-align: left; font-weight: 600; color: var(--text);
  padding: 10px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; position: sticky; top: 0; z-index: 1;
}
table.n-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.n-table tbody tr:hover td { background: var(--red50); }
table.n-table tr.expanded td { background: var(--red50); }
table.n-table td.nowrap, table.n-table th.nowrap { white-space: nowrap; }
.ellip { display: block; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.n-pagination { display: flex; align-items: center; gap: 8px; justify-content: flex-end; padding: 12px 4px 0; font-size: 14px; }
.n-pagination .pg { min-width: 30px; height: 30px; padding: 0 6px; border-radius: 6px; border: 1px solid var(--border-2);
  background:#fff; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
.n-pagination .pg:hover { border-color: var(--red600); color: var(--red600); }
.n-pagination .pg.on { background: var(--red700); border-color: var(--red700); color: #fff; }

/* ---------- NRadioGroup / NRadioButton ---------- */
.n-radiogroup { display: inline-flex; border: 1px solid var(--border-2); border-radius: var(--radius-sm); overflow: hidden; }
.n-radiogroup .rb {
  padding: 5px 12px; font-size: 13px; cursor: pointer; background: #fff; color: var(--text);
  border-right: 1px solid var(--border-2); user-select: none; white-space: nowrap;
}
.n-radiogroup .rb:last-child { border-right: none; }
.n-radiogroup .rb:hover { color: var(--red600); }
.n-radiogroup .rb.on { background: var(--red700); color: #fff; }

/* ---------- 表单控件 ---------- */
.n-input, .n-select {
  height: 34px; padding: 0 11px; border: 1px solid var(--border-2); border-radius: 8px;
  font-family: inherit; font-size: 14px; background: #fff; color: var(--text); outline: none;
}
.n-input.sm, .n-select.sm { height: 28px; font-size: 13px; padding: 0 8px; }
.n-input:focus, .n-select:focus { border-color: var(--red700); box-shadow: 0 0 0 2px rgba(139,0,18,.16); }
.n-input::placeholder { color: var(--text-3); }
label.n-radio { display: inline-flex; align-items: flex-start; gap: 8px; cursor: pointer; }
label.n-radio input { margin-top: 3px; accent-color: var(--red700); width: 15px; height: 15px; flex: none; }

/* ---------- NUploadDragger ---------- */
.n-upload-dragger {
  border: 1px dashed var(--border-2); border-radius: var(--radius); background: rgb(250,250,252);
  padding: 28px 20px; text-align: center; cursor: pointer; transition: .2s;
}
.n-upload-dragger:hover { border-color: var(--red700); }
.n-upload-dragger .ic { font-size: 34px; color: var(--text-3); margin-bottom: 10px; }
.n-upload-dragger .h { color: var(--text-2); }
.n-upload-dragger .s { font-size: 13px; color: var(--text-3); margin-top: 6px; }
.n-upload-file {
  display: flex; align-items: center; gap: 8px; padding: 6px 10px; margin-top: 8px;
  border-radius: var(--radius-sm); font-size: 14px; background: rgba(0,0,0,.02);
}

/* ---------- NProgress circle ---------- */
.n-progress-circle { width: 120px; height: 120px; position: relative; margin: 0 auto; }
.n-progress-circle svg { transform: rotate(-90deg); }
.n-progress-circle .txt {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 600; color: var(--text);
}

/* ---------- NModal preset=card ---------- */
.n-modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 2000;
  display: flex; align-items: flex-start; justify-content: center; padding: 40px 16px; overflow: auto;
}
.n-modal {
  background: #fff; border-radius: 16px; box-shadow: var(--shadow3); width: 700px; max-width: 95vw;
}
.n-modal.w1200 { width: 1200px; }
.n-modal.w960 { width: 960px; }
.n-modal > .head {
  padding: 18px 24px 12px; font-size: 18px; font-weight: 600;
  display: flex; align-items: center; gap: 10px;
}
.n-modal > .head .flex1 { flex: 1; }
.n-modal > .head .x { cursor: pointer; color: var(--text-3); font-size: 18px; line-height: 1; }
.n-modal > .head .x:hover { color: var(--text); }
.n-modal > .body { padding: 0 24px 8px; }
.n-modal > .foot { padding: 12px 24px 20px; display: flex; justify-content: flex-end; gap: 8px; }

/* ---------- NCollapse ---------- */
.n-collapse { border-top: 1px solid var(--border); }
.n-collapse .ci-head { padding: 10px 0; cursor: pointer; display: flex; align-items: center; gap: 8px; font-size: 14px; }
.n-collapse .ci-body { padding: 0 0 10px 20px; }

/* ---------- 论文对照视图（复刻 PaperCompareView） ---------- */
.cmp { display: flex; gap: 16px; max-height: 50vh; }
.cmp .side { flex: 1; padding: 16px; background: rgb(250,250,252); border-radius: var(--radius); overflow: auto; }
.cmp .side .st { font-weight: 700; margin-bottom: 16px; text-align: center; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.cmp .f { margin-bottom: 12px; }
.cmp .f .k { color: var(--text-2); font-size: 12px; }
.cmp .f .v { font-size: 14px; word-break: break-word; }
.cmp .f .v.title { font-weight: 500; }
.cmp .f.diff { background: rgba(180,83,9,.09); border-radius: 6px; padding: 4px 8px; margin-left: -8px; margin-right: -8px; }
.cmp .au { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; font-size: 12px; margin-bottom: 2px; }
.cmp .au .o { color: var(--text-3); }
.cmp .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* 字段级选择 */
.fchoose { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.fchoose .fr { display: grid; grid-template-columns: 120px 1fr; border-bottom: 1px solid var(--border); }
.fchoose .fr:last-child { border-bottom: none; }
.fchoose .fr.diff { background: rgba(180,83,9,.05); }
.fchoose .fk { padding: 10px 12px; font-size: 13px; color: var(--text-2); background: #F8F9FA; display: flex; align-items: center; gap: 6px; }
.fchoose .fv { padding: 8px 12px; display: flex; flex-direction: column; gap: 6px; }
.fchoose .opt {
  display: flex; gap: 8px; align-items: flex-start; padding: 6px 10px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-2); cursor: pointer; background: #fff; font-size: 13px;
}
.fchoose .opt:hover { border-color: var(--red600); }
.fchoose .opt.on { border-color: var(--red700); background: var(--red50); }
.fchoose .opt .src { font-size: 11px; color: var(--text-3); display: block; }
.fchoose .opt input[type=text] { width: 100%; }

/* 上游库来源标记 */
.srcdot { display: inline-block; padding: 1px 6px; border-radius: 3px; font-size: 11px; color: #fff; font-weight: 600; }

.muted { color: var(--text-2); }
.small { font-size: 13px; }
.xs { font-size: 12px; }
.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.mb2 { margin-bottom: 8px; } .mb4 { margin-bottom: 16px; } .mt2 { margin-top: 8px; } .mt4 { margin-top: 16px; }
.flexrow { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.flex1 { flex: 1; }
.hide { display: none !important; }
.center { text-align: center; }
.right { text-align: right; }
.bold { font-weight: 600; }

/* 演示条 */
.demobar {
  background: #1f2225; color: #d7dade; font-size: 13px; padding: 7px 24px;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.demobar b { color: #fff; }
.demobar select { background: #2c3033; color: #fff; border: 1px solid #444; border-radius: 6px; padding: 3px 8px; font-family: inherit; font-size: 13px; }
.demobar .hint { color: #8b9096; }

/* 向导式（方案六） */
.wiz { padding: 8px 0; }
.wiz .qn { color: var(--red700); font-weight: 600; font-size: 14px; }
.wiz .qt { font-size: 22px; font-weight: 700; margin: 10px 0 14px; line-height: 1.45; }
.wiz .plan { border: 2px solid var(--border-2); border-radius: 12px; padding: 14px 16px; cursor: pointer; background: #fff; }
.wiz .plan:hover { border-color: var(--red600); }
.wiz .plan.on { border-color: var(--red700); background: var(--red50); }
.wiz .dots { display: flex; gap: 4px; flex-wrap: wrap; margin: 8px 0 4px; }
.wiz .dots i { width: 18px; height: 18px; border-radius: 4px; background: #e3e5e8; cursor: pointer; }
.wiz .dots i.done { background: var(--success); }
.wiz .dots i.cur { background: var(--red700); box-shadow: 0 0 0 2px rgba(139,0,18,.25); }
.wiz .dots i.ign { background: var(--text-3); }

.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%) translateY(-10px);
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow3);
  padding: 10px 18px; font-size: 14px; z-index: 3000; opacity: 0; transition: .22s;
  display: flex; align-items: center; gap: 8px; border: 1px solid var(--border);
}
.toast.on { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 1000px) {
  .statgrid.c5 { grid-template-columns: repeat(2, 1fr); }
  .cmp { flex-direction: column; max-height: none; }
}