:root {
  --background: #f8f8f7;
  --surface: rgba(255, 255, 255, 0.96);
  --surface-subtle: #f4f4f2;
  --text: #171817;
  --muted: #6f716f;
  --faint: #9a9c99;
  --line: rgba(25, 27, 25, 0.105);
  --accent: #3376e8;
  --accent-soft: #eaf2ff;
  --focus: #e8eef8;
  --warning: #886b35;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { margin: 0; min-height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 68% 20%, rgba(255,255,255,.96), rgba(246,246,244,.78) 45%, rgba(236,237,235,.7)),
    var(--background);
  overflow: hidden;
  letter-spacing: -0.01em;
}

button, input, select { font: inherit; }
button { color: inherit; }

.app-shell { position: fixed; inset: 0; display: grid; grid-template-columns: 272px 1fr; }
.sidebar { position: relative; padding: 22px 20px; border-right: 1px solid var(--line); background: rgba(244,245,243,.9); }
.traffic { display: flex; gap: 8px; margin-bottom: 28px; }
.traffic i { width: 13px; height: 13px; border-radius: 50%; background: #ff5f57; }
.traffic i:nth-child(2) { background: #febc2e; }
.traffic i:nth-child(3) { background: #28c840; }
.brand { font-size: 18px; font-weight: 650; margin-bottom: 22px; }
.brand span { color: var(--faint); }
.sidebar nav { display: grid; gap: 17px; font-size: 15px; }
.sidebar nav div { display: flex; gap: 13px; align-items: center; }
.nav-gap { height: 4px; }
.nav-label { margin: 28px 0 12px; color: var(--faint); font-size: 13px; }
.workspace { display: flex; gap: 11px; align-items: center; font-size: 14px; }
.workspace b { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 7px; color: white; background: #4d82d9; font-size: 12px; }
.recent { padding: 8px 0; color: #585a58; font-size: 14px; }
.profile { position: absolute; left: 20px; right: 20px; bottom: 20px; display: flex; align-items: center; gap: 10px; }
.profile b { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: #d6b516; color: white; font-size: 11px; }
.background-workspace { position: relative; display: grid; place-items: center; }
.mode-switch { position: absolute; top: 16px; display: flex; padding: 3px; border-radius: 20px; background: #f1f1ef; color: #868885; font-size: 14px; }
.mode-switch span, .mode-switch b { padding: 7px 22px; font-weight: 500; }
.mode-switch b { border-radius: 17px; background: white; color: var(--text); box-shadow: 0 1px 4px rgba(0,0,0,.08); }
.background-workspace h1 { transform: translateY(-56px); font-size: 29px; font-weight: 500; }
.composer { position: absolute; top: calc(50% + 10px); width: 600px; height: 105px; border: 1px solid var(--line); border-radius: 22px; background: rgba(255,255,255,.72); padding: 20px; color: var(--faint); box-shadow: 0 10px 30px rgba(0,0,0,.04); }
.composer b { position: absolute; left: 20px; bottom: 15px; color: var(--text); font-size: 22px; font-weight: 300; }
.scrim { position: fixed; inset: 0; background: rgba(232,233,231,.67); backdrop-filter: blur(1.5px); }

.search-sheet {
  position: fixed;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  width: min(1060px, calc(100vw - 64px));
  height: min(690px, calc(100vh - 64px));
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid rgba(20,22,20,.13);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: 0 30px 80px rgba(26,30,25,.18), 0 4px 16px rgba(26,30,25,.08);
  backdrop-filter: blur(30px) saturate(1.08);
}

.search-header { position: relative; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.header-toolbar { display: flex; align-items: center; gap: 10px; }
.search-box { height: 48px; display: flex; align-items: center; gap: 11px; padding: 0 14px; border: 1px solid rgba(25,27,25,.14); border-radius: 13px; background: rgba(252,252,251,.92); box-shadow: 0 1px 2px rgba(0,0,0,.02); }
.search-box { flex: 1; min-width: 260px; }
.search-box:focus-within { border-color: rgba(51,118,232,.55); box-shadow: 0 0 0 3px rgba(51,118,232,.10); }
.search-box svg { width: 20px; fill: none; stroke: var(--text); stroke-width: 1.7; }
.search-box input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; font-size: 16px; }
.clear-button { border: 0; background: transparent; color: var(--faint); font-size: 24px; line-height: 1; cursor: pointer; }
.scope-control { display: flex; gap: 3px; padding: 3px; border-radius: 11px; background: #f2f2f0; }
.scope-control button { flex: 1; min-width: 0; height: 32px; padding: 0 10px; border: 0; border-radius: 8px; background: transparent; cursor: pointer; transition: background-color 140ms ease, color 140ms ease, transform 120ms var(--ease-out); }
.scope-control button.active { color: #205db8; background: var(--accent-soft); box-shadow: inset 0 0 0 1px rgba(51,118,232,.06); }
.scope-control button:active, .filter-button:active, .filter-popover button:active { transform: scale(.97); }
.right-controls { flex: none; display: flex; align-items: center; gap: 8px; }
.sort-control select { height: 44px; border: 1px solid var(--line); border-radius: 10px; padding: 0 34px 0 12px; background: #fff; color: var(--text); cursor: pointer; outline: 0; }
.filter-button { height: 44px; display: flex; align-items: center; gap: 7px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; background: white; cursor: pointer; transition: background-color 140ms ease, transform 120ms var(--ease-out); }
.filter-button svg { width: 17px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; }
.filter-button span { color: var(--muted); font-size: 13px; }
.filter-button[aria-expanded="true"] { color: var(--accent); background: var(--accent-soft); }
.filter-button[aria-expanded="true"] span { color: inherit; }
.filter-popover { position: absolute; z-index: 3; top: 70px; right: 18px; width: 280px; padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.98); box-shadow: 0 18px 45px rgba(24,28,24,.16); transform-origin: top right; transition: opacity 150ms var(--ease-out), transform 150ms var(--ease-out); }
.filter-popover[hidden] { display: none; }
.popover-title { font-weight: 650; margin-bottom: 14px; }
.filter-section { margin-bottom: 14px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.filter-label { margin-bottom: 8px; color: var(--muted); font-size: 12px; }
.filter-popover label { display: grid; grid-template-columns: 62px 1fr; align-items: center; gap: 10px; margin: 10px 0; color: var(--muted); font-size: 13px; }
.filter-popover select { height: 34px; border: 1px solid var(--line); border-radius: 8px; background: white; padding: 0 8px; color: var(--text); }
.filter-popover button { width: 100%; margin-top: 6px; height: 34px; border: 0; border-radius: 8px; background: var(--surface-subtle); cursor: pointer; transition: transform 120ms var(--ease-out); }

.search-body { position: relative; min-height: 0; display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, .9fr); }
.results-panel { min-width: 0; overflow: auto; border-right: 1px solid var(--line); }
.results-list { min-height: 100%; outline: 0; }
.result-row { position: relative; display: grid; grid-template-columns: 32px minmax(0, 1fr) auto; gap: 12px; padding: 12px 18px 12px 20px; border-bottom: 1px solid var(--line); cursor: default; outline: 0; transition: background-color 120ms ease; }
.result-row[aria-selected="true"] { background: var(--focus); box-shadow: inset 3px 0 0 var(--accent); }
.result-row:focus-visible { box-shadow: inset 0 0 0 2px var(--accent); }
.source-wrap { position: relative; width: 30px; height: 30px; }
.source-icon { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 9px; color: white; background: #292b29; font-size: 11px; font-weight: 650; }
.source-icon.chat { color: #373a37; background: #fff; border: 1px solid rgba(25,27,25,.17); }
.status-indicator { position: absolute; top: -5px; right: -5px; width: 15px; height: 15px; display: grid; place-items: center; padding: 0; border: 2px solid white; border-radius: 50%; color: white; background: #d98a24; box-shadow: 0 1px 3px rgba(84,53,12,.24); font-size: 9px; font-weight: 750; line-height: 1; outline: 0; cursor: help; }
.status-indicator::after { content: attr(data-tooltip); position: absolute; z-index: 6; left: 0; top: 20px; width: max-content; max-width: 180px; padding: 6px 8px; border: 1px solid var(--line); border-radius: 7px; color: var(--text); background: rgba(255,255,255,.98); box-shadow: 0 8px 20px rgba(24,28,24,.13); font-size: 11px; font-weight: 500; opacity: 0; pointer-events: none; transform: scale(.97); transform-origin: top left; transition: opacity 140ms var(--ease-out), transform 140ms var(--ease-out); }
.status-indicator:hover::after, .status-indicator:focus-visible::after { opacity: 1; transform: scale(1); }
.result-main { min-width: 0; }
.result-title-line { min-width: 0; }
.result-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 15px; font-weight: 620; }
.result-summary { margin-top: 6px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #5f625f; font-size: 12.5px; line-height: 1.35; }
.result-date { padding-top: 2px; color: var(--muted); font-size: 12px; white-space: nowrap; }
mark { padding: 0 2px; border-radius: 3px; color: inherit; background: #dce9ff; }
.empty-state { height: 100%; display: grid; place-content: center; gap: 7px; text-align: center; color: var(--muted); }
.empty-state strong { color: var(--text); font-size: 15px; }
.preview-pane { min-width: 0; overflow: auto; padding: 24px 26px; background: rgba(252,252,251,.62); }
.preview-close { display: none; }
.preview-kicker { color: var(--muted); font-size: 11px; font-weight: 650; text-transform: uppercase; letter-spacing: .06em; }
.preview-pane h2 { margin: 8px 0 6px; font-size: 19px; line-height: 1.28; letter-spacing: -.02em; }
.preview-descriptor { color: var(--muted); font-size: 12px; }
.preview-heading { margin-top: 24px; font-size: 13px; font-weight: 650; }
.preview-summary { margin: 8px 0 0; color: #393b39; font-size: 14px; line-height: 1.48; }
.preview-status { display: flex; align-items: flex-start; gap: 9px; margin-top: 18px; padding: 11px 12px; border: 1px solid rgba(217,138,36,.18); border-radius: 9px; color: #76501d; background: #fcf7ee; font-size: 12px; line-height: 1.4; }
.preview-status::before { content: "!"; flex: none; display: grid; place-items: center; width: 16px; height: 16px; border-radius: 50%; color: white; background: #d98a24; font-size: 10px; font-weight: 750; }
.match-reason { margin: 16px 0 0; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.4; }
.match-reason strong { color: var(--text); font-weight: 620; }
.facts { margin-top: 22px; border-top: 1px solid var(--line); }
.fact { display: grid; grid-template-columns: 90px 1fr; gap: 14px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.fact dt { color: var(--muted); font-size: 12px; }
.fact dd { margin: 0; font-size: 13px; line-height: 1.35; }
.related-button { width: 100%; display: flex; justify-content: space-between; margin-top: 20px; padding: 12px 0; border: 0; border-bottom: 1px solid var(--line); background: transparent; cursor: pointer; font-size: 13px; text-align: left; }
.related-list { margin: 8px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 12px; }
.related-list li { padding: 6px 0; }
.related-list[hidden] { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (hover: hover) and (pointer: fine) {
  .result-row:hover:not([aria-selected="true"]) { background: rgba(244,245,243,.72); }
  .filter-button:hover, .filter-popover button:hover { background: var(--surface-subtle); }
}

@media (max-width: 860px) {
  .search-body { grid-template-columns: 1fr; }
  .results-panel { border-right: 0; }
  .preview-pane {
    position: absolute;
    inset: 0;
    z-index: 5;
    display: block;
    padding: 28px 30px;
    background: rgba(252,252,251,.99);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(12px);
    transition: opacity 160ms var(--ease-out), transform 180ms var(--ease-out), visibility 0s linear 180ms;
  }
  .search-sheet.details-open .preview-pane {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
    transition-delay: 0s;
  }
  .preview-close { display: block; margin: -4px 0 18px; padding: 6px 0; border: 0; background: transparent; color: var(--accent); cursor: pointer; }
}

@media (max-width: 760px) {
  body { overflow: auto; }
  .app-shell { display: block; }
  .sidebar { display: none; }
  .background-workspace { min-height: 100vh; opacity: .7; }
  .background-workspace .composer { width: calc(100vw - 40px); }
  .search-sheet { inset: 10px; transform: none; width: auto; height: calc(100dvh - 20px); border-radius: 17px; grid-template-rows: auto minmax(0,1fr); }
  .search-header { padding: 14px 14px 10px; }
  .header-toolbar { align-items: stretch; flex-wrap: wrap; gap: 8px; }
  .search-box { height: 44px; }
  .right-controls { width: 100%; justify-content: flex-end; }
  .sort-control { flex: 1; }
  .sort-control select { width: 100%; max-width: none; }
  .filter-popover { top: 112px; right: 14px; width: min(280px, calc(100vw - 48px)); }
  .result-row { grid-template-columns: 28px minmax(0,1fr) auto; padding: 13px 12px; gap: 10px; }
  .source-wrap, .source-icon { width: 28px; height: 28px; border-radius: 8px; }
  .result-summary { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
  .preview-pane { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}