/* Dashboard styles: quiet, readable, classroom-first. */
:root {
  --accent: #356DA8;
  --accent-dark: #2a5684;
  --ink: #1f2933;
  --ink-secondary: #3e4c59;
  --muted: #6b7a89;
  --line: #d9e2ec;
  --surface: #fcfcfb;
  --panel: #ffffff;
  --warn-bg: #fdf6e3;
  --warn-edge: #b58900;
  --error: #b64b44;
}

* { box-sizing: border-box; }
body {
  margin: 0 auto;
  max-width: 1080px;
  padding: 1.25rem 1.5rem 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--surface);
  line-height: 1.5;
}
h1 { font-size: 1.45rem; margin: 0 0 .25rem; }
h2 { font-size: 1.15rem; margin: 1.1rem 0 .5rem; }
h3 { font-size: 1rem; margin: 1.25rem 0 .4rem; }
a { color: var(--accent-dark); }
code, pre { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: .85em; }
.subtitle { color: var(--ink-secondary); margin-top: 0; }
.muted { color: var(--muted); font-size: .88rem; }
.hint { color: var(--ink-secondary); background: #f0f4f8; border-radius: 6px; padding: .6rem .8rem; }

/* Tabs */
.tabs { display: flex; gap: .25rem; border-bottom: 2px solid var(--line); margin-top: 1rem; }
.tab {
  border: none; background: none; cursor: pointer;
  font: inherit; color: var(--ink-secondary);
  padding: .5rem 1.1rem; border-bottom: 3px solid transparent; margin-bottom: -2px;
}
.tab.active { color: var(--accent-dark); border-bottom-color: var(--accent); font-weight: 600; }
.tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.tab-panel { padding: .25rem 0 1rem; }
.hidden { display: none !important; }

/* Forms and controls */
.controls, .filters { display: flex; flex-wrap: wrap; gap: 1rem; margin: .6rem 0; }
label { display: flex; flex-direction: column; gap: .25rem; font-size: .9rem; color: var(--ink-secondary); }
input[type="text"], select {
  font: inherit; color: var(--ink);
  padding: .4rem .5rem; border: 1px solid var(--line); border-radius: 6px; background: var(--panel);
  min-width: 11rem;
}
button {
  font: inherit; cursor: pointer; border-radius: 6px;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  padding: .45rem 1rem; margin: .4rem 0;
}
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button.primary:hover { background: var(--accent-dark); }
button:disabled { opacity: .55; cursor: wait; }
button:focus-visible { outline: 2px solid var(--accent-dark); outline-offset: 2px; }
.status { color: var(--ink-secondary); min-height: 1.2rem; }

/* Tables */
table { border-collapse: collapse; width: 100%; font-size: .88rem; }
th, td { text-align: left; padding: .3rem .55rem; border-bottom: 1px solid var(--line); }
th { color: var(--ink-secondary); font-weight: 600; background: #f0f4f8; position: sticky; top: 0; }
.dictionary td:first-child { font-family: ui-monospace, Consolas, monospace; font-size: .82rem; }
.table-wrap { max-height: 320px; overflow: auto; border: 1px solid var(--line); border-radius: 6px; }
.facts strong { font-size: 1.05rem; }

/* Chart */
.chart-wrap { border: 1px solid var(--line); border-radius: 6px; padding: .75rem; background: var(--panel); }

/* Metric cards */
.metric-cards { display: flex; flex-wrap: wrap; gap: .75rem; margin: .75rem 0; }
.metric-card {
  flex: 1 1 10rem; background: var(--panel); border: 1px solid var(--line);
  border-radius: 8px; padding: .6rem .9rem;
}
.metric-label { color: var(--muted); font-size: .8rem; }
.metric-value { font-size: 1.5rem; font-weight: 650; font-variant-numeric: tabular-nums; }

/* Notices */
.note { background: #eef4fa; border-left: 3px solid var(--accent); padding: .5rem .8rem; border-radius: 0 6px 6px 0; }
.warning { background: var(--warn-bg); border-left: 3px solid var(--warn-edge); padding: .5rem .8rem; margin: .4rem 0; border-radius: 0 6px 6px 0; }
.warning::before { content: "⚠ "; }
.error-box { color: #7a2f2a; background: #faeceb; border-left: 3px solid var(--error); padding: .5rem .8rem; margin: .4rem 0; border-radius: 0 6px 6px 0; }
.error-box::before { content: "✕ "; }

/* Prediction */
#prediction { border-top: 1px solid var(--line); margin-top: 1rem; padding-top: .75rem; }
.predicted-headline { font-size: 1.25rem; font-weight: 650; }

details { margin: .9rem 0; }
summary { cursor: pointer; color: var(--ink-secondary); }
pre { background: #f0f4f8; border-radius: 6px; padding: .75rem; overflow-x: auto; }

/* Footer: subdued, below all tab content, never overlapping */
.footer {
  margin-top: 1.5rem; padding: .9rem 0 1.2rem;
  border-top: 1px solid var(--line);
  color: var(--muted); font-size: .85rem; text-align: center;
}