:root {
  color-scheme: dark;
  --ink: #e6edf2;
  --muted: #84919b;
  --faint: #52616b;
  --line: #25343d;
  --panel: #101a21;
  --panel-raised: #14222a;
  --canvas: #0b1117;
  --accent: #7ce1c1;
  --accent-strong: #b3f3dc;
  --warning: #f2c879;
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; color: var(--ink); background: var(--canvas); }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .45; background: linear-gradient(120deg, rgba(124,225,193,.06), transparent 38%), repeating-linear-gradient(90deg, transparent 0, transparent 79px, rgba(255,255,255,.018) 80px); }
.auth-gate { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 24px; background: rgba(6,12,16,.94); backdrop-filter: blur(12px); }
.auth-gate[hidden] { display: none; }
.login-panel { width: min(440px, 100%); padding: 34px; border: 1px solid rgba(124,225,193,.28); background: var(--panel); box-shadow: 0 24px 80px rgba(0,0,0,.35); }
.login-panel .brand-mark { margin-bottom: 26px; }
.login-panel h2 { margin-top: 10px; font-size: 34px; }
.login-copy { margin: 15px 0 26px; color: var(--muted); font-size: 13px; line-height: 1.6; }
.login-panel label { color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .14em; }
.login-panel input { display: block; width: 100%; min-height: 46px; margin: 10px 0 8px; padding: 0 12px; color: var(--ink); border: 1px solid var(--line); outline: 0; background: var(--canvas); font: inherit; }
.login-panel input:focus { border-color: var(--accent); }
.login-panel button { width: 100%; justify-content: space-between; margin-top: 12px; }
.login-error { min-height: 18px; color: #f0a0a0; font-size: 11px; }
.shell { position: relative; width: min(1180px, calc(100% - 48px)); min-height: 100vh; margin: 0 auto; display: flex; flex-direction: column; }
.topbar { min-height: 104px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand-block, .status-cluster, .query-footer, .workspace-heading, .footer { display: flex; align-items: center; }
.brand-block { gap: 14px; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; color: var(--canvas); background: var(--accent); font-size: 21px; font-weight: 800; }
.eyebrow, .panel-label, .query-panel label, .footer { margin: 0; color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .16em; }
h1, h2, p { margin: 0; }
h1 { font-size: 17px; letter-spacing: .01em; }
.status-cluster { gap: 9px; color: var(--muted); font-size: 12px; }
.health-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--warning); box-shadow: 0 0 0 4px rgba(242,200,121,.1); }
.health-dot.online { background: var(--accent); box-shadow: 0 0 0 4px rgba(124,225,193,.1); }
.health-dot.offline { background: #e47d7d; box-shadow: 0 0 0 4px rgba(228,125,125,.1); }
.read-only { margin-left: 14px; padding: 7px 9px; color: var(--accent-strong); border: 1px solid rgba(124,225,193,.35); font-size: 10px; font-weight: 800; letter-spacing: .13em; }
.identity-label { margin-left: 10px; color: var(--accent); font-size: 10px; font-weight: 800; letter-spacing: .1em; }
.logout-button { min-height: 28px; padding: 0 8px; color: var(--muted); border: 1px solid var(--line); background: transparent; font-size: 9px; }
.logout-button[hidden] { display: none; }
.logout-button:hover { color: var(--ink); border-color: var(--muted); background: transparent; }
.workspace { flex: 1; padding: 74px 0 48px; }
.workspace-heading { justify-content: space-between; gap: 24px; margin-bottom: 34px; }
h2 { margin-top: 10px; font-size: clamp(28px, 4vw, 48px); line-height: 1.05; font-weight: 500; letter-spacing: -.025em; }
.subheading { margin-top: 14px; color: var(--muted); font-size: 14px; }
.scope-note { display: flex; align-items: center; gap: 10px; color: var(--faint); font-size: 11px; }
.scope-line { width: 27px; height: 1px; background: var(--accent); }
.chat-layout { display: grid; grid-template-columns: minmax(220px, 280px) minmax(0, 1fr); gap: 16px; }
.answer-panel, .history-panel, .query-panel { border: 1px solid var(--line); background: rgba(16,26,33,.9); }
.answer-panel { min-height: 410px; padding: 23px 26px; display: flex; flex-direction: column; }
.history-panel { min-height: 410px; padding: 23px 18px; }
.history-header, .conversation-header, .history-title-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.history-header, .conversation-header { min-height: 38px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.panel-label { display: flex; gap: 10px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.history-header .panel-label, .conversation-header .panel-label { padding: 0; border: 0; }
.panel-index { color: var(--accent); }
.conversation-state { max-width: 58%; color: var(--faint); font-size: 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conversation-list { display: flex; flex-direction: column; gap: 7px; margin-top: 14px; max-height: 350px; overflow-y: auto; }
.history-item { display: block; width: 100%; min-height: 66px; padding: 11px 12px; color: var(--muted); border: 1px solid transparent; background: transparent; text-align: left; }
.history-item:hover, .history-item.active { color: var(--ink); border-color: rgba(124,225,193,.28); background: rgba(124,225,193,.06); }
.history-item strong { max-width: 165px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; font-weight: 600; }
.history-item time { color: var(--faint); font-size: 9px; font-weight: 400; letter-spacing: 0; }
.history-preview { display: block; margin-top: 7px; overflow: hidden; color: var(--faint); font-size: 10px; font-weight: 400; letter-spacing: 0; text-overflow: ellipsis; white-space: nowrap; }
.history-empty { margin-top: 24px; color: var(--faint); font-size: 11px; line-height: 1.5; text-align: center; }
.history-error { color: #f0a0a0; }
.secondary-button { min-height: 30px; padding: 0 10px; color: var(--accent); border: 1px solid rgba(124,225,193,.3); background: transparent; font-size: 10px; letter-spacing: .04em; }
.secondary-button:hover { color: var(--canvas); background: var(--accent); }
.messages { flex: 1; max-height: 350px; padding: 20px 2px 2px; overflow-y: auto; }
.answer-state { min-height: 300px; display: flex; flex-direction: column; justify-content: center; }
.empty-state { align-items: center; color: var(--faint); text-align: center; }
.empty-glyph { margin-bottom: 12px; color: var(--accent); font-size: 30px; }
.message { width: min(82%, 680px); margin-bottom: 14px; padding: 14px 16px; border: 1px solid var(--line); background: rgba(20,34,42,.75); }
.message-user { margin-left: auto; border-color: rgba(124,225,193,.25); background: rgba(124,225,193,.06); }
.message-label { margin-bottom: 7px; color: var(--accent); font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.message-user .message-label { color: var(--warning); }
.message p { color: var(--ink); font-size: 14px; line-height: 1.65; white-space: pre-wrap; overflow-wrap: anywhere; }
.message-meta { margin-top: 10px; color: var(--accent); font-size: 9px; font-weight: 800; letter-spacing: .13em; }
.message-error p { color: #f0a0a0; }
.message-pending { opacity: .65; }
.query-panel { margin-top: 16px; padding: 22px 26px 18px; background: var(--panel-raised); }
.query-panel textarea { display: block; width: 100%; margin-top: 13px; padding: 0; resize: vertical; color: var(--ink); border: 0; outline: 0; background: transparent; font: inherit; font-size: 15px; line-height: 1.5; }
.query-panel textarea::placeholder { color: var(--faint); }
.mode-picker { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; padding: 0; border: 0; }
.mode-picker legend { width: 100%; margin-bottom: 7px; color: var(--muted); font-size: 9px; font-weight: 700; letter-spacing: .14em; }
.mode-picker label { cursor: pointer; }
.mode-picker input { position: absolute; opacity: 0; pointer-events: none; }
.mode-picker span { display: block; padding: 7px 10px; color: var(--muted); border: 1px solid var(--line); font-size: 10px; letter-spacing: .03em; }
.mode-picker input:checked + span { color: var(--canvas); border-color: var(--accent); background: var(--accent); font-weight: 800; }
.mode-picker input:focus-visible + span { outline: 2px solid var(--accent-strong); outline-offset: 2px; }
.comparison-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 14px; }
.comparison-card { min-width: 0; padding: 15px 16px; border: 1px solid rgba(124,225,193,.28); background: rgba(20,34,42,.75); }
.comparison-card p { color: var(--ink); font-size: 13px; line-height: 1.6; white-space: pre-wrap; overflow-wrap: anywhere; }
.comparison-error p { color: #f0a0a0; }
.query-footer { justify-content: space-between; gap: 18px; margin-top: 22px; }
.hint { color: var(--faint); font-size: 11px; }
button { display: inline-flex; align-items: center; gap: 22px; min-height: 42px; padding: 0 16px; color: var(--canvas); border: 0; background: var(--accent); cursor: pointer; font: inherit; font-size: 12px; font-weight: 800; letter-spacing: .03em; }
button:hover { background: var(--accent-strong); }
button:disabled { cursor: wait; opacity: .65; }
.button-arrow { font-size: 18px; }
.footer { justify-content: space-between; padding: 20px 0; border-top: 1px solid var(--line); font-size: 9px; }
@media (max-width: 820px) { .chat-layout { grid-template-columns: 1fr; } .history-panel { min-height: 0; } .conversation-list { max-height: 190px; } }
@media (max-width: 680px) { .shell { width: min(100% - 30px, 1180px); } .topbar { min-height: 86px; align-items: flex-start; padding: 22px 0; gap: 18px; flex-direction: column; } .status-cluster { width: 100%; flex-wrap: wrap; } .workspace { padding-top: 48px; } .workspace-heading { align-items: flex-start; flex-direction: column; } .scope-note { margin-top: 4px; } .answer-panel, .history-panel, .query-panel { padding-left: 18px; padding-right: 18px; } .message { width: 94%; } .comparison-grid { grid-template-columns: 1fr; } .query-footer { align-items: flex-start; flex-direction: column; } .query-footer button { width: 100%; justify-content: space-between; } .footer { align-items: flex-start; flex-direction: column; gap: 8px; } }