* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #0f1117;
    color: #e4e4e7;
    line-height: 1.6;
    overflow: hidden;
}

/* ── App shell ── */
.app-shell { display: flex; height: 100vh; min-height: 0; }
.app-sidebar {
    width: 288px;
    flex-shrink: 0;
    border-right: 1px solid #2a2d3a;
    background: #161922;
    overflow-y: auto;
    padding: 18px 14px 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.app-sidebar header h1 { font-size: 1.25rem; margin: 0 0 4px; }
.app-sidebar header .subtitle { font-size: 0.78rem; color: #a1a1aa; line-height: 1.4; }

.controls { display: flex; flex-direction: column; gap: 14px; }
.sidebar-label {
    text-transform: uppercase; letter-spacing: 0.06em;
    font-size: 0.68rem; color: #71717a; font-weight: 600; margin-bottom: 5px;
}
.search-box, .filters { display: flex; flex-direction: column; gap: 6px; }
input[type="text"], select {
    width: 100%;
    background: #0f1117;
    border: 1px solid #2a2d3a;
    color: #e4e4e7;
    padding: 7px 9px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-family: inherit;
}
input[type="text"]:focus, select:focus { outline: none; border-color: #6366f1; }
select { cursor: pointer; }
button {
    background: #262a38;
    border: 1px solid #2a2d3a;
    color: #e4e4e7;
    padding: 7px 10px;
    border-radius: 6px;
    font-size: 0.82rem;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}
button:hover { background: #313649; border-color: #4b5266; }
.nav-controls { display: flex; gap: 6px; align-items: center; }
.nav-controls button { flex: 1; }
.nav-controls #counter {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.8rem; color: #a1a1aa; text-align: center; min-width: 64px;
}
.sidebar-footer {
    margin-top: auto; display: flex; flex-direction: column; gap: 4px;
    font-size: 0.76rem; border-top: 1px solid #2a2d3a; padding-top: 12px;
}
.sidebar-footer a { color: #818cf8; text-decoration: none; }
.sidebar-footer a:hover { text-decoration: underline; }

/* ── Main ── */
.app-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.app-main-body { flex: 1; overflow-y: auto; }
.container { max-width: 960px; margin: 0 auto; padding: 28px 32px 64px; }
#loading { color: #a1a1aa; padding: 40px 0; text-align: center; }

.card { background: #161922; border: 1px solid #2a2d3a; border-radius: 12px; padding: 24px 26px; }
.card-header { border-bottom: 1px solid #2a2d3a; padding-bottom: 16px; margin-bottom: 6px; }
.badge-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.badge {
    font-size: 0.72rem; font-weight: 600; padding: 3px 9px; border-radius: 999px;
    border: 1px solid transparent; letter-spacing: 0.01em;
}
.badge.domain-financial { background: #1e3a2f; color: #6ee7b7; border-color: #2f6b52; }
.badge.domain-legal     { background: #3a2f1e; color: #fbbf24; border-color: #6b562f; }
.badge.domain-paper     { background: #1e2a3a; color: #7dd3fc; border-color: #2f4f6b; }
.badge.task   { background: #2a1e3a; color: #d8b4fe; border-color: #55326b; }
.badge.set    { background: #262a38; color: #cbd5e1; border-color: #3b4256; }
.badge.lang   { background: #1a2b2b; color: #5eead4; border-color: #2f5b5b; }
.badge.meta   { background: #21242f; color: #94a3b8; border-color: #333849; }
#questionText { font-size: 1.28rem; line-height: 1.45; font-weight: 650; color: #f4f4f5; }

/* ── Sections ── */
.section { border-top: 1px solid #23262f; }
.section:first-of-type { border-top: none; }
.section-title {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.98rem; font-weight: 600; color: #e4e4e7;
    padding: 15px 0 12px; cursor: pointer; user-select: none;
}
.section-title:hover { color: #fff; }
.section-title .toggle-icon { font-size: 0.7rem; color: #818cf8; width: 12px; }
.section-title .count { font-size: 0.78rem; color: #71717a; font-weight: 500; }
.section-content { padding-bottom: 16px; }

.pre-wrap {
    white-space: pre-wrap; word-wrap: break-word;
    font-family: inherit; font-size: 0.9rem; color: #d4d4d8;
    background: #12141c; border: 1px solid #23262f; border-radius: 8px; padding: 14px 16px;
}

/* ── Documents ── */
#docsList { display: flex; flex-direction: column; gap: 8px; }
.doc-card { border: 1px solid #2a2d3a; border-radius: 8px; background: #12141c; overflow: hidden; }
.doc-head {
    display: flex; align-items: flex-start; gap: 10px;
    padding: 11px 14px; cursor: pointer; user-select: none;
}
.doc-head:hover { background: #171a24; }
.doc-ord {
    font-family: ui-monospace, monospace; font-size: 0.72rem; font-weight: 700;
    color: #818cf8; background: #1e2130; border-radius: 5px;
    padding: 2px 7px; flex-shrink: 0; margin-top: 1px;
}
.doc-head-main { flex: 1; min-width: 0; }
.doc-title { font-size: 0.9rem; font-weight: 600; color: #e4e4e7; word-break: break-word; }
.doc-sub { font-size: 0.74rem; color: #71717a; margin-top: 2px; word-break: break-word; }
.doc-toggle { font-size: 0.7rem; color: #818cf8; flex-shrink: 0; margin-top: 3px; }
.doc-body { border-top: 1px solid #23262f; padding: 14px 16px; display: none; }
.doc-body.open { display: block; }
.doc-body .doc-text {
    white-space: pre-wrap; word-wrap: break-word;
    font-size: 0.84rem; color: #cbd5e1; max-height: 520px; overflow-y: auto;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.doc-loading { color: #71717a; font-size: 0.82rem; }

/* markdown (paper docs) */
.doc-md { font-size: 0.88rem; color: #d4d4d8; max-height: 560px; overflow-y: auto; }
.doc-md h1, .doc-md h2, .doc-md h3 { color: #f4f4f5; margin: 14px 0 8px; line-height: 1.3; }
.doc-md h1 { font-size: 1.2rem; } .doc-md h2 { font-size: 1.05rem; } .doc-md h3 { font-size: 0.95rem; }
.doc-md p { margin: 8px 0; } .doc-md ul, .doc-md ol { margin: 8px 0 8px 22px; }
.doc-md code { background: #21242f; padding: 1px 5px; border-radius: 4px; font-size: 0.85em; }
.doc-md pre { background: #0f1117; border: 1px solid #23262f; border-radius: 6px; padding: 10px; overflow-x: auto; }
.doc-md table { border-collapse: collapse; margin: 10px 0; font-size: 0.82rem; display: block; overflow-x: auto; }
.doc-md th, .doc-md td { border: 1px solid #2a2d3a; padding: 5px 9px; }
.doc-md img { max-width: 100%; }

/* ── Answer ── */
.reveal-btn { background: #3a2f10; color: #fbbf24; border-color: #6b5620; font-weight: 600; }
.reveal-btn:hover { background: #4a3c15; }
#answerBody {
    background: #12141c; border: 1px solid #3a3320; border-left: 3px solid #fbbf24;
    border-radius: 8px; padding: 14px 16px;
}
.ans-dict-key { color: #fbbf24; font-weight: 600; font-size: 0.9rem; margin-top: 10px; }
.ans-dict-key:first-child { margin-top: 0; }
.ans-list { margin: 4px 0 4px 20px; }
.ans-list li { font-size: 0.88rem; color: #e4e4e7; margin: 2px 0; }
.ans-str { font-size: 0.95rem; color: #f4f4f5; white-space: pre-wrap; }
.ans-empty { color: #71717a; font-style: italic; }
.ans-raw-toggle { margin-top: 12px; font-size: 0.76rem; color: #818cf8; cursor: pointer; }
.ans-raw {
    display: none; margin-top: 8px; white-space: pre-wrap; word-wrap: break-word;
    font-family: ui-monospace, monospace; font-size: 0.8rem; color: #a1a1aa;
    background: #0f1117; border: 1px solid #23262f; border-radius: 6px; padding: 10px;
}

/* ── Meta ── */
#metaBody { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; font-size: 0.84rem; }
.meta-k { color: #71717a; }
.meta-v { color: #d4d4d8; word-break: break-word; font-family: ui-monospace, monospace; font-size: 0.8rem; }
.meta-v pre { white-space: pre-wrap; }