:root {
  --ink: #172033;
  --muted: #667085;
  --line: #d9e3df;
  --surface: #ffffff;
  --soft: #f3f7f5;
  --teal: #0f766e;
  --blue: #2563eb;
  --amber: #b45309;
  --rose: #be123c;
  --sidebar: #14213d;
  --shadow: 0 12px 30px rgba(18, 32, 50, 0.10);
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: #edf3f0; color: var(--ink); font-family: Arial, "Noto Sans KR", sans-serif; }
button, input { font: inherit; }
.app-shell { min-height: 100vh; display: grid; grid-template-columns: 280px minmax(0, 1fr); }
.sidebar { background: var(--sidebar); color: #f8fafc; padding: 24px; display: flex; flex-direction: column; gap: 24px; }
.brand { display: flex; gap: 12px; align-items: center; }
.brand-mark { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 8px; background: #2dd4bf; color: #082f49; font-weight: 800; }
.brand strong, .brand span { display: block; }
.brand span { margin-top: 3px; color: #cbd5e1; font-size: 13px; }
.tabs { display: grid; gap: 8px; }
.tabs button { min-height: 44px; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.07); color: #f8fafc; border-radius: 8px; cursor: pointer; text-align: left; padding: 0 14px; }
.tabs button.is-active { background: #f8fafc; color: var(--sidebar); border-color: #f8fafc; }
.boundary-box { margin-top: auto; border: 1px solid rgba(255,255,255,.22); border-radius: 8px; padding: 14px; background: rgba(255,255,255,.08); }
.boundary-box strong, .boundary-box span { display: block; }
.boundary-box span { margin-top: 6px; color: #dbeafe; font-size: 13px; line-height: 1.45; }
.workspace { padding: 26px; display: grid; gap: 18px; align-content: start; }
.topbar { display: flex; align-items: end; justify-content: space-between; gap: 16px; }
.eyebrow { color: var(--teal); font-weight: 700; font-size: 13px; }
h1, h2, h3, p { margin: 0; }
h1 { margin-top: 5px; font-size: 28px; line-height: 1.18; }
h2 { font-size: 18px; }
h3 { font-size: 16px; }
.gate-list { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.gate-list span { min-height: 30px; display: inline-flex; align-items: center; border-radius: 999px; padding: 0 10px; background: #fff1f2; color: var(--rose); border: 1px solid #fecdd3; font-size: 12px; font-weight: 700; }
.screen { display: none; }
.screen.is-active { display: grid; gap: 16px; }
.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.metric-grid article { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 16px; box-shadow: var(--shadow); display: grid; gap: 6px; }
.metric-grid span { color: var(--muted); font-size: 13px; font-weight: 700; }
.metric-grid strong { font-size: 28px; }
.metric-grid small { color: #475467; }
.split-layout { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr); gap: 16px; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); }
.panel-head { min-height: 68px; padding: 18px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); }
.panel-head span { color: var(--muted); font-size: 13px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; min-width: 850px; border-collapse: collapse; }
th, td { padding: 13px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 14px; }
th { background: #f8fafc; color: #344054; font-size: 12px; }
.chip, .status-pill { min-height: 28px; display: inline-flex; align-items: center; border-radius: 999px; padding: 0 10px; background: #fff7ed; color: var(--amber); border: 1px solid #fed7aa; font-size: 12px; font-weight: 700; }
.wide { width: 100%; }
.flow-image { display: block; border-radius: 8px; border: 1px solid var(--line); }
.chat-log, .question-list, .kb-grid, .evidence-list { padding: 18px; }
.chat-log, .question-list, .evidence-list { display: grid; gap: 12px; }
.message { border-radius: 8px; padding: 16px; display: grid; gap: 10px; line-height: 1.58; }
.user-message { background: #eef6ff; border: 1px solid #bfdbfe; }
.bot-message { background: #f7faf8; border: 1px solid #cfe2d7; }
.speaker, .tag { color: var(--muted); font-size: 12px; font-weight: 700; }
.evidence-strip { margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.evidence-strip div { border: 1px solid var(--line); border-radius: 8px; background: #ffffff; padding: 10px; min-width: 0; }
.evidence-strip dt { color: var(--muted); font-size: 12px; margin-bottom: 5px; }
.evidence-strip dd { margin: 0; font-size: 13px; line-height: 1.36; overflow-wrap: anywhere; }
.ticket-callout { border-left: 4px solid var(--blue); background: #eff6ff; padding: 10px 12px; display: grid; gap: 4px; font-size: 13px; }
.question-list button { min-height: 44px; border: 1px solid var(--line); border-radius: 8px; background: #ffffff; color: var(--ink); cursor: pointer; text-align: left; padding: 0 12px; }
.question-list button.is-active { border-color: var(--teal); box-shadow: inset 0 0 0 2px rgba(15,118,110,.18); }
.kb-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.kb-card { border: 1px solid var(--line); border-radius: 8px; padding: 14px; display: grid; gap: 10px; min-width: 0; }
.card-top { display: flex; justify-content: space-between; gap: 10px; color: var(--muted); font-size: 12px; }
.owner { color: #475467; font-size: 13px; }
.kb-card .evidence-strip { grid-template-columns: 1fr 1fr; }
.toggle { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 999px; padding: 8px 12px; background: #f8fafc; cursor: pointer; color: #344054; }
.evidence-list { list-style: none; margin: 0; }
.evidence-list li { display: flex; justify-content: space-between; gap: 18px; border: 1px solid var(--line); border-radius: 8px; padding: 13px; background: #fbfdfc; }
.evidence-list span { color: var(--muted); font-weight: 700; }
.evidence-list strong { text-align: right; }
.evidence-note { margin: 0 18px 18px; border-radius: 8px; border: 1px solid #bae6fd; background: #eff6ff; padding: 14px; display: grid; gap: 6px; }
.evidence-note p { color: #334155; line-height: 1.55; }
@media (max-width: 980px) { .app-shell { grid-template-columns: 1fr; } .sidebar { min-height: auto; } .tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); } .topbar, .split-layout { display: grid; grid-template-columns: 1fr; } .gate-list { justify-content: flex-start; } .metric-grid, .kb-grid, .evidence-strip { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .workspace, .sidebar { padding: 16px; } h1 { font-size: 22px; } .tabs { grid-template-columns: 1fr; } .panel-head, .evidence-list li { display: grid; } .evidence-list strong { text-align: left; } }