:root {
    --bg: #0f1117;
    --panel: #171a21;
    --panel-2: #1e222c;
    --border: #2a2f3a;
    --text: #e6e9ef;
    --muted: #9aa4b2;
    --accent: #2dd4bf;          /* teal — MEBench accent */
    --accent-dim: #103833;
    --gold: #fbbf24;
    --blue: #38bdf8;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 14px;
}

.app-shell { display: flex; height: 100vh; overflow: hidden; }

/* ---------- Sidebar ---------- */
.app-sidebar {
    width: 340px;
    min-width: 340px;
    background: var(--panel);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 18px 16px;
}
.app-sidebar header h1 { margin: 0; font-size: 22px; letter-spacing: -0.02em; }
.subtitle { margin: 4px 0 0; color: var(--muted); font-size: 12px; }

.controls { margin-top: 18px; display: flex; flex-direction: column; gap: 18px; }

.sidebar-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-bottom: 6px;
}

.view-toggle { display: flex; gap: 6px; }
.view-toggle button {
    flex: 1;
    padding: 8px 10px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    color: var(--muted);
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.12s;
}
.view-toggle button:hover { color: var(--text); border-color: #3a4150; }
.view-toggle button.active { background: var(--accent-dim); color: var(--accent); border-color: var(--accent); }

.search-box { display: flex; flex-direction: column; gap: 8px; }

input[type="text"], select, button { font-family: inherit; font-size: 13px; }
input[type="text"], select {
    width: 100%;
    padding: 8px 10px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    outline: none;
}
input[type="text"]:focus, select:focus { border-color: var(--accent); }
select option { background: var(--panel-2); color: var(--text); }
#docSelect, #questionSelect { max-width: 100%; text-overflow: ellipsis; }

.nav-controls { display: flex; align-items: center; gap: 8px; }
.nav-controls button {
    flex: 1;
    padding: 8px 10px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.12s;
}
.nav-controls button:hover { border-color: var(--accent); color: var(--accent); }
#corpusCounter, #evalCounter {
    font-variant-numeric: tabular-nums;
    color: var(--muted);
    font-size: 12px;
    min-width: 64px;
    text-align: center;
}

.split-select { font-weight: 600; }

.sidebar-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 11px;
    line-height: 1.6;
}
.sidebar-footer a { color: var(--blue); text-decoration: none; }
.sidebar-footer a:hover { text-decoration: underline; }

/* ---------- Main panel ---------- */
.app-main { flex: 1; overflow-y: auto; padding: 24px 28px; display: flex; flex-direction: column; }
#loading { color: var(--muted); padding: 40px; text-align: center; }

/* ---------- Corpus view ---------- */
#corpusView { display: flex; flex-direction: column; flex: 1; min-height: 0; }
.doc-meta-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 16px;
}
.doc-meta-card h2 { margin: 0 0 12px; font-size: 19px; word-break: break-word; }
.meta-grid { display: flex; flex-wrap: wrap; gap: 8px 10px; align-items: center; }
.meta-pill {
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 4px 12px;
    font-size: 12px;
    color: var(--muted);
}
.meta-pill b { color: var(--text); font-weight: 600; }
.doc-link { margin-left: auto; color: var(--blue); text-decoration: none; font-size: 13px; white-space: nowrap; }
.doc-link:hover { text-decoration: underline; }

.doc-content {
    flex: 1;
    min-height: 320px;
    overflow: auto;
    background: #12151c;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px 24px;
    line-height: 1.7;
    white-space: pre-wrap;
    font-size: 14.5px;
}

/* ---------- Eval view ---------- */
#evalView { flex: 1; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 22px 26px; max-width: 1000px; }

.badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.badge {
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    color: var(--muted);
}
.badge.id { color: var(--accent); border-color: var(--accent); }
.badge.cat-Comparative { color: var(--gold); border-color: var(--gold); }
.badge.cat-Statistical { color: var(--blue); border-color: var(--blue); }
.badge.cat-Relational { color: #c084fc; border-color: #c084fc; }
.badge.topic { color: #34d399; border-color: #34d399; }

.card h2 { margin: 0 0 18px; font-size: 20px; line-height: 1.4; }

.answer-banner {
    background: var(--accent-dim);
    border: 1px solid var(--accent);
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 18px;
}
.answer-banner .lbl { color: var(--accent); font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; }
.answer-banner .val { font-size: 16px; font-weight: 600; margin-top: 6px; white-space: pre-wrap; }
.answer-banner ul { margin: 6px 0 0; padding-left: 20px; }
.answer-banner li { margin: 2px 0; font-weight: 600; }
.answer-banner .empty-answer { color: var(--muted); font-weight: 500; font-style: italic; }
.answer-banner table { border-collapse: collapse; margin-top: 6px; font-size: 13px; }
.answer-banner th, .answer-banner td { border: 1px solid var(--accent); padding: 3px 10px; text-align: left; }
.answer-banner th { background: rgba(45,212,191,0.12); }

.field { margin-bottom: 16px; }
.field .lbl { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 5px; }
.field .val { line-height: 1.7; white-space: pre-wrap; }
.field code, .sql-code {
    display: block;
    white-space: pre-wrap;
    font-family: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
    font-size: 12.5px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    color: #8be9c6;
}
.doc-chips { display: flex; flex-wrap: wrap; gap: 8px; }
a.doclink, button.topic-btn {
    color: var(--blue);
    text-decoration: none;
    cursor: pointer;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 5px 10px;
    font-size: 13px;
    white-space: nowrap;
    font-family: inherit;
}
a.doclink:hover, button.topic-btn:hover { border-color: var(--blue); color: var(--blue); }
a.doclink.missing { color: var(--muted); cursor: default; }
a.doclink.missing:hover { border-color: var(--border); }

.empty { color: var(--muted); padding: 40px; text-align: center; }