/* ============================================================
   知微 · Agent Memory Workbench
   Visual: 案卷 (case file) workbench — paper, ink, cinnabar.
   ============================================================ */

:root {
  /* paper theme (default) */
  --paper:    #f5eddc;
  --paper-2:  #fff8ea;
  --paper-3:  #ece1c9;
  --ink:      #2f241b;
  --ink-soft: #4a3a2c;
  --muted:    #7d6f5f;
  --cinnabar: #a84f2a;
  --cinnabar-soft: #c97053;
  --moss:     #5d6f34;
  --gold:     #b88a3a;
  --line:     rgba(168, 79, 42, 0.22);
  --line-soft:rgba(47, 36, 27, 0.10);
  --line-strong: rgba(47, 36, 27, 0.18);
  --night:    #1f1b17;

  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif CJK SC", "Source Han Serif", STSong, SimSun, "Times New Roman", serif;
  --font-sans:  "PingFang SC", "Hiragino Sans GB", -apple-system, "Helvetica Neue", "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono:  "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* densities */
  --pad-1: 6px;
  --pad-2: 10px;
  --pad-3: 16px;
  --pad-4: 24px;
  --pad-5: 32px;
  --pad-6: 48px;

  --radius-1: 2px;
  --radius-2: 4px;
  --radius-3: 6px;

  /* typography */
  --fs-display: 26px;
  --fs-h1: 22px;
  --fs-h2: 18px;
  --fs-h3: 15px;
  --fs-body: 13.5px;
  --fs-meta: 12px;
  --fs-mini: 11px;
}

[data-theme="night"] {
  --paper:    #181511;
  --paper-2:  #221d18;
  --paper-3:  #2c241d;
  --ink:      #f3e8d3;
  --ink-soft: #d8c9ad;
  --muted:    #b9aa93;
  --cinnabar: #d06a3a;
  --cinnabar-soft: #e08560;
  --moss:     #8a9b5a;
  --gold:     #c7a45d;
  --line:     rgba(208, 106, 58, 0.28);
  --line-soft:rgba(243, 232, 211, 0.10);
  --line-strong: rgba(243, 232, 211, 0.20);
}

[data-accent="moss"]   { --cinnabar: #5d7a3a; --cinnabar-soft: #82a458; --line: rgba(93, 122, 58, 0.26); }
[data-accent="indigo"] { --cinnabar: #2f4a7a; --cinnabar-soft: #4a6aa0; --line: rgba(47, 74, 122, 0.26); }

[data-density="compact"] {
  --pad-1: 4px; --pad-2: 7px; --pad-3: 11px; --pad-4: 16px; --pad-5: 22px; --pad-6: 32px;
  --fs-display: 22px; --fs-h1: 19px; --fs-h2: 16px; --fs-h3: 14px; --fs-body: 13px; --fs-meta: 11.5px; --fs-mini: 10.5px;
}

* { box-sizing: border-box; }
html, body, #root { height: 100%; margin: 0; }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button { font-family: inherit; color: inherit; cursor: pointer; }
ol, ul { list-style: none; padding: 0; margin: 0; }
blockquote { margin: 0; }

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.muted-num { color: var(--muted); font-size: var(--fs-meta); font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ============================================================
   Paper texture
   ============================================================ */
body::before {
  content: "";
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    radial-gradient(rgba(168, 79, 42, 0.05) 1px, transparent 1px),
    radial-gradient(rgba(47, 36, 27, 0.03) 1px, transparent 1px);
  background-size: 28px 28px, 14px 14px;
  background-position: 0 0, 7px 7px;
  opacity: 0.7;
}
[data-theme="night"] body::before {
  background-image:
    radial-gradient(rgba(208, 106, 58, 0.06) 1px, transparent 1px),
    radial-gradient(rgba(243, 232, 211, 0.03) 1px, transparent 1px);
}

/* ============================================================
   App shell
   ============================================================ */
.app {
  display: grid;
  grid-template-rows: 56px 1fr;
  height: 100vh;
  position: relative;
  z-index: 1;
}
[data-density="compact"] .app { grid-template-rows: 48px 1fr; }

.workspace {
  display: grid;
  grid-template-columns: 240px 1fr 0px;
  height: 100%;
  overflow: hidden;
}
.workspace--with-drawer { grid-template-columns: 240px 1fr 380px; }
[data-density="compact"] .workspace { grid-template-columns: 200px 1fr 0px; }
[data-density="compact"] .workspace--with-drawer { grid-template-columns: 200px 1fr 360px; }

.main {
  overflow: auto;
  padding: var(--pad-4) var(--pad-5);
  background: var(--paper);
  position: relative;
}
.main::-webkit-scrollbar { width: 8px; height: 8px; }
.main::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }

/* ============================================================
   Topbar
   ============================================================ */
.topbar {
  display: grid;
  grid-template-columns: 220px 280px 1fr auto;
  align-items: center;
  gap: var(--pad-3);
  padding: 0 var(--pad-4);
  border-bottom: 1px solid var(--line-strong);
  background: var(--paper-2);
  position: relative;
  z-index: 5;
}
.topbar__brand { display: flex; align-items: center; gap: var(--pad-2); color: var(--ink); }
.brand-mark { color: var(--ink); display: flex; align-items: center; justify-content: center; }
.brand-text { line-height: 1.05; }
.brand-text__zh { font-family: var(--font-serif); font-size: 17px; letter-spacing: 4px; }
.brand-text__en { font-family: var(--font-mono); font-size: 9.5px; color: var(--muted); letter-spacing: 0.5px; }

.agent-switcher {
  display: flex; align-items: center; gap: var(--pad-2);
  padding: 6px 10px;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  border-radius: var(--radius-2);
  text-align: left;
}
.agent-switcher:hover { border-color: var(--cinnabar); }
.agent-switcher__avatar {
  width: 26px; height: 26px;
  display: grid; place-items: center;
  background: var(--cinnabar); color: #fff;
  font-family: var(--font-serif); font-size: 14px;
  border-radius: var(--radius-2);
}
.agent-switcher__col { display: flex; flex-direction: column; line-height: 1.15; }
.agent-switcher__name { font-family: var(--font-serif); font-size: 14px; }
.agent-switcher__sub { font-family: var(--font-mono); font-size: 10px; color: var(--muted); }
.agent-switcher__chevron { color: var(--muted); }

.breadcrumb { display: flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 11px; color: var(--muted); }
.breadcrumb__seg--cur { color: var(--ink); font-family: var(--font-serif); font-size: 13px; letter-spacing: 1px; }
.breadcrumb__sep { color: var(--line); }

.topbar__right { display: flex; align-items: center; gap: var(--pad-3); }
.sync-badge { display: flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 11px; color: var(--muted); }
.sync-badge__dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--moss);
  box-shadow: 0 0 0 3px rgba(93, 111, 52, 0.18);
  animation: pulse 2.6s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.45} }

.search {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-2);
  background: var(--paper);
  width: 280px;
}
.search__icon { color: var(--muted); font-size: 14px; }
.search__input { flex: 1; border: none; outline: none; background: transparent; font-size: 12px; color: var(--ink); }
.search__input::placeholder { color: var(--muted); }
.search__kbd { font-family: var(--font-mono); font-size: 10px; color: var(--muted); border: 1px solid var(--line); padding: 1px 5px; border-radius: 3px; }

/* Agent menu dropdown */
.agent-menu {
  position: absolute; top: 56px; left: 220px;
  width: 320px;
  background: var(--paper-2);
  border: 1px solid var(--line-strong);
  box-shadow: 0 10px 40px rgba(47, 36, 27, 0.18);
  border-radius: var(--radius-2);
  padding: var(--pad-2);
  z-index: 50;
}
.agent-menu__title { font-family: var(--font-serif); font-size: 13px; padding: 6px 10px; color: var(--muted); border-bottom: 1px dashed var(--line); }
.agent-menu__item {
  width: 100%; display: flex; align-items: center; gap: var(--pad-2);
  padding: 8px 10px; border: none; background: transparent; text-align: left;
  border-radius: var(--radius-2);
}
.agent-menu__item:hover { background: var(--paper-3); }
.agent-menu__item--current { background: rgba(168, 79, 42, 0.08); }
.agent-menu__avatar { width: 28px; height: 28px; display: grid; place-items: center; background: var(--ink); color: var(--paper); font-family: var(--font-serif); font-size: 14px; border-radius: var(--radius-2); }
.agent-menu__item--current .agent-menu__avatar { background: var(--cinnabar); }
.agent-menu__col { flex: 1; display: flex; flex-direction: column; line-height: 1.15; }
.agent-menu__name { font-family: var(--font-serif); font-size: 14px; }
.agent-menu__sub { font-family: var(--font-mono); font-size: 10px; color: var(--muted); }
.agent-menu__foot { padding: 8px 10px; font-size: 11px; color: var(--muted); border-top: 1px dashed var(--line); margin-top: 4px; }

/* ============================================================
   Left nav
   ============================================================ */
.leftnav {
  border-right: 1px solid var(--line-strong);
  background: var(--paper-2);
  padding: var(--pad-3) 0 var(--pad-3) 0;
  display: flex; flex-direction: column;
  overflow: hidden;
}
.leftnav__heading {
  font-family: var(--font-serif); font-size: 11px; color: var(--muted);
  letter-spacing: 6px; padding: 0 var(--pad-3) var(--pad-2); border-bottom: 1px dashed var(--line);
}
.leftnav__list { padding: var(--pad-2) var(--pad-1); flex: 1; overflow: auto; display: flex; flex-direction: column; gap: 2px; }
.leftnav__sep { height: 1px; margin: var(--pad-2) var(--pad-3); background: var(--line); }
.nav-item {
  width: 100%;
  display: grid;
  grid-template-columns: 36px 1fr auto;
  align-items: center;
  gap: var(--pad-2);
  padding: 8px var(--pad-2);
  border: none; background: transparent; text-align: left;
  border-radius: var(--radius-2);
  position: relative;
}
.nav-item:hover { background: var(--paper-3); }
.nav-item--active {
  background: var(--paper);
  box-shadow: inset 3px 0 0 var(--cinnabar);
}
.nav-item__kanji {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  font-family: var(--font-serif); font-size: 16px;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-1);
  background: var(--paper-2);
}
.nav-item--active .nav-item__kanji { border-color: var(--cinnabar); color: var(--cinnabar); background: var(--paper); }
.nav-item__col { display: flex; flex-direction: column; line-height: 1.1; }
.nav-item__title { font-family: var(--font-serif); font-size: 14px; letter-spacing: 1.5px; }
.nav-item--active .nav-item__title { color: var(--ink); }
.nav-item__en { font-family: var(--font-mono); font-size: 9.5px; color: var(--muted); letter-spacing: 0.4px; }
.nav-item__badge {
  background: var(--cinnabar); color: var(--paper);
  font-family: var(--font-mono); font-size: 10px;
  padding: 1px 6px; border-radius: 8px;
}

.leftnav__foot { padding: var(--pad-3); border-top: 1px dashed var(--line); }
.radius-mini { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; }
.radius-mini__label { font-family: var(--font-serif); font-size: 11px; color: var(--muted); letter-spacing: 2px; }
.radius-mini__rings { position: relative; width: 64px; height: 64px; margin: 0 auto; align-self: center; }
.radius-mini__rings .ring { position: absolute; inset: 0; border-radius: 50%; border: 1px solid var(--cinnabar); }
.radius-mini__rings .ring-2 { inset: 8px; opacity: 0.6; border-style: dashed; }
.radius-mini__rings .ring-3 { inset: 16px; opacity: 0.35; border-style: dotted; }
.radius-mini__rings::before { content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); width: 6px; height: 6px; border-radius: 50%; background: var(--cinnabar); }
.radius-mini__cap { font-family: var(--font-mono); font-size: 9px; color: var(--muted); letter-spacing: 0.5px; }

/* ============================================================
   Drawer (right)
   ============================================================ */
.drawer {
  border-left: 1px solid var(--line-strong);
  background: var(--paper-2);
  overflow: auto;
  transform: translateX(100%);
  transition: transform 0.24s ease;
  display: flex; flex-direction: column;
}
.drawer--open { transform: none; }
.drawer__head {
  position: sticky; top: 0; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--pad-3) var(--pad-3);
  border-bottom: 1px solid var(--line-strong);
  background: var(--paper-2);
}
.drawer__head-left { display: flex; gap: var(--pad-3); align-items: center; }
.drawer__seal {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  font-family: var(--font-serif); font-size: 18px;
  color: var(--cinnabar); border: 1.5px solid var(--cinnabar);
  background: var(--paper);
  position: relative;
  border-radius: 2px;
}
.drawer__seal em { display: block; font-style: normal; font-family: var(--font-mono); font-size: 8px; color: var(--cinnabar); margin-top: -2px; }
.drawer__title { font-family: var(--font-serif); font-size: 16px; line-height: 1.2; max-width: 240px; }
.drawer__sub { font-family: var(--font-mono); font-size: 10px; color: var(--muted); }
.drawer__close {
  background: transparent; border: 1px solid var(--line); width: 28px; height: 28px;
  border-radius: var(--radius-1); font-size: 16px; color: var(--muted);
}
.drawer__close:hover { color: var(--cinnabar); border-color: var(--cinnabar); }
.drawer__body { padding: var(--pad-3); display: flex; flex-direction: column; gap: var(--pad-3); }

/* ============================================================
   Section header
   ============================================================ */
.section-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: var(--pad-4);
  padding-bottom: var(--pad-3);
  margin-bottom: var(--pad-4);
  border-bottom: 1.5px solid var(--ink);
  position: relative;
}
.section-header::after {
  content: ""; position: absolute; left: 0; bottom: -4px; width: 100%; height: 1px; background: var(--ink); opacity: 0.3;
}
.section-header__left { display: flex; gap: var(--pad-3); align-items: center; }
.section-header__seal {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  width: 56px; height: 56px;
  border: 2px solid var(--cinnabar);
  background: var(--paper);
  position: relative;
  border-radius: 2px;
}
.section-header__seal::before {
  content: ""; position: absolute; inset: 3px; border: 1px solid var(--cinnabar); opacity: 0.3;
}
.section-header__kanji { font-family: var(--font-serif); font-size: 24px; color: var(--cinnabar); line-height: 1; }
.section-header__num { font-family: var(--font-serif); font-size: 10px; color: var(--cinnabar); margin-top: 2px; }
.section-header__title { font-family: var(--font-serif); font-size: var(--fs-display); margin: 0; letter-spacing: 4px; line-height: 1.05; }
.section-header__subtitle { font-family: var(--font-sans); font-size: 12px; color: var(--muted); margin-top: 4px; }
.section-header__right { display: flex; align-items: center; gap: var(--pad-3); }

.agent-state { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.2; gap: 2px; }
.agent-state__name { font-family: var(--font-serif); font-size: 14px; }
.agent-state__sub { font-family: var(--font-mono); font-size: 10px; color: var(--muted); }

/* ============================================================
   Cards (general)
   ============================================================ */
.card {
  background: var(--paper-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-2);
  padding: var(--pad-3);
  position: relative;
}
.card::before {
  content: ""; position: absolute; left: -1px; top: 12px; bottom: 12px; width: 3px; background: var(--cinnabar); opacity: 0.0;
}
.card:hover::before { opacity: 0.0; }
.card__head { display: flex; align-items: baseline; justify-content: space-between; padding-bottom: var(--pad-2); border-bottom: 1px dashed var(--line); margin-bottom: var(--pad-3); }
.card__title { font-family: var(--font-serif); font-size: var(--fs-h2); margin: 0; letter-spacing: 2px; }
.card__title-en { font-family: var(--font-mono); font-size: 10px; color: var(--muted); margin-left: 8px; letter-spacing: 0.5px; }

.link-btn { background: transparent; border: none; color: var(--cinnabar); font-family: var(--font-serif); font-size: 12px; padding: 0; }
.link-btn:hover { text-decoration: underline; }
.link-btn--sm { font-size: 11px; }

.btn {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 1px;
  padding: 6px 14px;
  border: 1px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius-1);
  display: inline-flex; align-items: center; gap: 6px;
  transition: all 0.12s;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn--cinnabar { border-color: var(--cinnabar); color: var(--cinnabar); }
.btn--cinnabar:hover { background: var(--cinnabar); color: var(--paper); }
.btn--ghost { border-color: var(--line); color: var(--muted); }
.btn--ghost:hover { border-color: var(--ink); color: var(--ink); background: var(--paper-3); }

/* ============================================================
   Status / source / confidence primitives
   ============================================================ */
.status-dot { display: inline-flex; align-items: center; gap: 4px; font-size: 11.5px; font-family: var(--font-serif); letter-spacing: 1px; }
.status-dot__mark { font-size: 10px; }

.src-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 8px 3px 3px;
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: 12px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--ink-soft);
}
.src-chip:hover { border-color: var(--cinnabar); color: var(--ink); }
.src-chip__tag {
  width: 18px; height: 18px;
  display: inline-grid; place-items: center;
  background: var(--chip-color, var(--muted));
  color: var(--paper);
  font-family: var(--font-serif);
  font-size: 10px;
  border-radius: 50%;
}
.src-chip__label { font-family: var(--font-sans); font-size: 11px; }
.src-chip__locator { font-size: 10px; color: var(--muted); border-left: 1px solid var(--line); padding-left: 6px; }
.src-chip--mini { padding: 1px; border-radius: 50%; border: none; }
.src-chip__more { font-family: var(--font-mono); font-size: 10px; color: var(--muted); }

.conf { display: inline-flex; align-items: center; gap: 6px; }
.conf__rail { width: 64px; height: 4px; background: var(--line-soft); border-radius: 2px; overflow: hidden; }
.conf__fill { height: 100%; }
.conf__num { font-family: var(--font-mono); font-size: 10.5px; font-variant-numeric: tabular-nums; }

.stale {
  display: inline-block; font-family: var(--font-serif); font-size: 10px; letter-spacing: 1px;
  padding: 1px 6px; border-radius: 2px;
}
.stale--med { color: var(--gold); border: 1px solid var(--gold); }
.stale--high { color: var(--paper); background: var(--cinnabar); }

.privacy {
  display: inline-block; font-family: var(--font-mono); font-size: 10px;
  padding: 1px 6px; border: 1px solid currentColor; border-radius: 2px;
  letter-spacing: 0.5px;
}

.role-badge {
  display: inline-block; font-family: var(--font-serif); font-size: 10.5px; letter-spacing: 2px;
  padding: 1px 6px; border: 1px solid currentColor; border-radius: 2px;
}

.seal {
  display: inline-block; font-family: var(--font-serif); font-size: 11px;
  padding: 1px 4px; border: 1.5px solid var(--cinnabar); color: var(--cinnabar);
  letter-spacing: 1.5px;
  background: var(--paper);
  border-radius: 1px;
}

.margin-note {
  display: grid; grid-template-columns: 24px 1fr; align-items: baseline; gap: 8px;
  padding: 4px 0;
}
.margin-note__num {
  font-family: var(--font-serif); font-size: 11px; color: var(--cinnabar);
  border: 1px solid var(--cinnabar); width: 20px; height: 20px;
  display: grid; place-items: center;
  border-radius: 2px;
}
.margin-note__text { font-size: var(--fs-body); color: var(--ink-soft); line-height: 1.55; }