:root { --ink: #1f2933; --muted: #616e7c; --line: #d9e2ec; --accent: #0b6e4f; --bg: #f7f9fb; --error: #b42318; }
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; color: var(--ink); background: var(--bg); line-height: 1.5; }
.topbar { display: flex; align-items: center; gap: 1.5rem; padding: 0.75rem 1.5rem; background: #fff; border-bottom: 1px solid var(--line); }
.topbar .brand { font-weight: 700; color: var(--accent); text-decoration: none; }
.topbar nav { display: flex; gap: 1rem; flex: 1; }
.topbar .logout { display: flex; align-items: center; gap: 0.75rem; margin: 0; }
main { max-width: 64rem; margin: 0 auto; padding: 1.5rem; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 1.25rem; margin-bottom: 1.5rem; }
.narrow { max-width: 26rem; margin: 3rem auto; }
label { display: block; margin-bottom: 0.75rem; }
label.check { display: flex; gap: 0.5rem; align-items: center; }
input[type=text], input[type=email], input[type=password], input[type=date], select { display: block; width: 100%; padding: 0.5rem; border: 1px solid var(--line); border-radius: 6px; font: inherit; }
button { padding: 0.45rem 0.9rem; border: 1px solid var(--accent); background: var(--accent); color: #fff; border-radius: 6px; font: inherit; cursor: pointer; }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.actions form { margin: 0; }
.filters { display: flex; gap: 1rem; flex-wrap: wrap; align-items: end; }
.filters label { margin: 0; }
.error { color: var(--error); }
.notice { color: var(--accent); }
.muted { color: var(--muted); }
.link { font-family: monospace; }
input[type=file] { display: block; margin-top: 0.25rem; }
textarea { display: block; width: 100%; padding: 0.5rem; border: 1px solid var(--line); border-radius: 6px; font: inherit; }
fieldset { border: 1px solid var(--line); border-radius: 6px; margin: 0 0 0.75rem; }
.answer p, .answer ul, .answer ol { margin: 0 0 0.5rem; }
.citations li { margin-bottom: 0.75rem; }
blockquote { margin: 0.25rem 0 0; padding: 0.5rem 0.75rem; border-left: 3px solid var(--line); background: var(--bg); white-space: pre-wrap; }
main.wide { max-width: none; }
.viewer { display: grid; grid-template-columns: minmax(14rem, 18rem) minmax(0, 1fr); gap: 1.5rem; align-items: start; }
.viewer-panel { position: sticky; top: 1rem; }
.viewer-panel h1 { font-size: 1.25rem; margin-top: 0; }
.viewer-panel table { font-size: 0.9rem; }
.pages { overflow-x: auto; }
.page { margin: 0 0 1.5rem; text-align: center; }
.sheet { position: relative; display: inline-block; max-width: 100%; border: 1px solid var(--line); background: #fff; vertical-align: top; }
.sheet img { display: block; max-width: 100%; height: auto; -webkit-user-select: none; user-select: none; }
.zoom-2 .sheet, .zoom-2 .sheet img { max-width: none; }
.page figcaption { color: var(--muted); font-size: 0.875rem; }
input[type=number] { display: block; width: 100%; padding: 0.5rem; border: 1px solid var(--line); border-radius: 6px; font: inherit; }
@media (max-width: 48rem) { .viewer { grid-template-columns: 1fr; } .viewer-panel { position: static; } }
.mark, .frame { position: absolute; pointer-events: none; }
.mark { background: rgba(255, 214, 0, 0.35); outline: 2px solid rgba(204, 150, 0, 0.9); }
.frame { outline: 3px solid rgba(204, 150, 0, 0.9); outline-offset: -3px; }
.tag { display: inline-block; padding: 0 0.4rem; border: 1px solid var(--line); border-radius: 4px; background: var(--bg); color: var(--muted); font-size: 0.8rem; }
.chat { display: grid; grid-template-columns: minmax(12rem, 16rem) minmax(0, 1fr); gap: 1.5rem; align-items: start; }
.conversations h2 { font-size: 1rem; }
.conversations ul { list-style: none; padding: 0; margin: 0; }
.conversations li { margin-bottom: 0.5rem; }
.conversations a[aria-current] { font-weight: 700; }
.chat-main h1 { margin-top: 0; }
.turn { margin-bottom: 1.5rem; }
.question { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 0.75rem 1rem; margin-bottom: 0.5rem; }
.question p { margin: 0; white-space: pre-wrap; }
.answer-card { background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 8px; padding: 0.75rem 1rem; }
.answer-card.failed { border-left-color: var(--error); }
@media (max-width: 48rem) { .chat { grid-template-columns: 1fr; } }
.answer-card.streaming .answer { white-space: pre-wrap; margin: 0; }
.details { list-style: none; margin: 0; padding: 0; font-size: 0.9rem; }
.table-scroll { overflow-x: auto; }