:root {
  /* Paleta de Kwizzz, la misma que en la app (android/.../ui/theme/Theme.kt) y en el logo (design/). */
  --bg: #fffbf0; --fg: #1f1f1f; --muted: #6b6457; --card: #fff; --border: #efe6cf;
  --accent: #ffc21a; --accent-fg: #1f1f1f; --accent-deep: #f2a800; --danger: #c62828; --ok: #2e7d32;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; background: var(--bg); color: var(--fg); }
a { color: inherit; }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 10px 24px; background: var(--card); border-bottom: 1px solid var(--border); }
.topbar nav { display: flex; gap: 16px; align-items: center; }
.topbar .brand img { height: 32px; }
.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
.page-head { display: flex; justify-content: space-between; align-items: center; }
.btn, input[type=submit] { background: var(--accent); color: var(--accent-fg); border: 0; padding: 8px 14px; border-radius: 6px; font-weight: 600; cursor: pointer; text-decoration: none; }
.link { background: none; border: 0; padding: 0; cursor: pointer; text-decoration: underline; font: inherit; }
.danger { color: var(--danger); }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
tr.inactive { color: var(--muted); }
.actions { display: flex; gap: 12px; }
.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }
.flash-notice { background: #e8f5e9; color: var(--ok); }
.flash-alert { background: #ffebee; color: var(--danger); }
.form { display: flex; flex-direction: column; gap: 14px; background: var(--card); padding: 20px; border-radius: 8px; border: 1px solid var(--border); }
.form label { display: flex; flex-direction: column; gap: 4px; font-weight: 600; }
.form label.check { flex-direction: row; align-items: center; font-weight: 400; }
.form input[type=text], .form input[type=number], .form input[type=email], .form input[type=password], .form select, .filter select { padding: 8px; border: 1px solid var(--border); border-radius: 6px; font: inherit; }
.row { display: flex; gap: 24px; align-items: end; }
fieldset { border: 1px solid var(--border); border-radius: 8px; }
.answers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.answer-slot { display: flex; flex-direction: column; gap: 4px; padding: 8px; border: 1px solid var(--border); border-radius: 6px; }
.answer-slot:has(input[type=checkbox]:checked) { border-color: var(--ok); background: #f1f8f1; }
.ok { color: var(--ok); }
.form-actions { display: flex; gap: 16px; align-items: center; }
.filter { margin: 16px 0; }
.login { max-width: 360px; margin: 80px auto; }

/* Idiomas en el panel de admin */
.locale { display: inline-block; font-size: 0.75rem; font-weight: 700; padding: 1px 6px; border-radius: 4px; background: var(--ok); color: #fff; }
.locale.missing { background: transparent; color: var(--muted); border: 1px dashed var(--border); text-decoration: line-through; }
.help { margin: 0; font-size: 0.85rem; color: var(--muted); }
.notes { margin: 4px 0 0; white-space: pre-wrap; font: inherit; font-size: 0.85rem; color: var(--muted); }
.notes.danger { color: var(--danger); }
.review { font-size: 0.8rem; font-weight: 600; white-space: nowrap; }
.review-unreviewed { color: var(--muted); }
.review-reviewed { color: var(--ok); }
.review-reported { color: var(--danger); }
.reports { background: var(--card); border: 1px solid var(--danger); border-radius: 8px; padding: 4px 20px; margin-bottom: 16px; }
.reports h2 { font-size: 1rem; }
.reports ul { padding-left: 18px; }
.reports p { margin: 4px 0 12px; white-space: pre-wrap; }
.reports .resolved { color: var(--muted); }

/* Estadísticas del panel de admin. Colores de serie validados para daltonismo sobre fondo blanco. */
.viz, .stat-tiles { --series-1: #2a78d6; --series-2: #eb6834; --grid: #ece7da; }
.stat-tiles { display: flex; gap: 16px; flex-wrap: wrap; margin: 16px 0; }
.stat-tile { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 12px 20px; }
.stat-value { font-size: 2rem; font-weight: 700; }
.stat-label { color: var(--muted); font-size: 0.85rem; }
.viz { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 16px 20px; margin: 16px 0; }
.viz h2 { font-size: 1.1rem; margin: 0 0 4px; }
.viz details { margin-top: 12px; font-size: 0.9rem; }
.viz summary { cursor: pointer; color: var(--muted); }
.series-1 { background: var(--series-1); }
.series-2 { background: var(--series-2); }
.viz-legend { display: flex; gap: 16px; list-style: none; padding: 0; margin: 12px 0; font-size: 0.85rem; }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; }
.columns-chart { display: grid; grid-template-columns: 32px 1fr; grid-template-rows: 200px auto; }
.columns-chart .y-axis { position: relative; font-size: 0.75rem; color: var(--muted); }
.columns-chart .y-axis span { position: absolute; right: 8px; transform: translateY(50%); }
.columns-chart .plot { position: relative; display: flex; align-items: stretch; border-bottom: 1px solid var(--muted); }
.columns-chart .gridline { position: absolute; left: 0; right: 0; height: 1px; background: var(--grid); }
.columns-chart .column { position: relative; flex: 1; display: flex; flex-direction: column-reverse; align-items: center; gap: 2px; }
.columns-chart .column:hover { background: #faf6ea; }
.columns-chart .segment { width: min(70%, 24px); }
.columns-chart .segment:last-child { border-radius: 4px 4px 0 0; }
.columns-chart .x-axis { grid-column: 2; display: flex; font-size: 0.75rem; color: var(--muted); }
.columns-chart .x-axis span { flex: 1; white-space: nowrap; text-align: center; overflow: visible; width: 0; }
.bars-chart { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.bar-row { display: grid; grid-template-columns: 120px 1fr; align-items: center; gap: 12px; font-size: 0.9rem; }
.bar-label { text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { position: relative; display: flex; align-items: center; gap: 6px; height: 20px; margin-right: 40px; }
.bar { height: 20px; border-radius: 0 4px 4px 0; }
.bar-value { font-size: 0.8rem; color: var(--muted); }
.bar-track .target { position: absolute; top: -4px; bottom: -4px; width: 1px; background: var(--muted); }

/* Páginas públicas (borrado de cuenta, privacidad y términos) */
.public-page { max-width: 640px; margin: 32px auto; padding: 0 16px; line-height: 1.5; }
.public-page h2 { font-size: 1.1rem; margin-top: 0; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 16px 20px; margin: 16px 0; }
.btn-danger { background: var(--danger); color: #fff; }
.public-page h3 { font-size: 1rem; margin-bottom: 4px; }
.brand { display: inline-block; line-height: 0; }
.brand img { height: 40px; width: auto; }
.public-page .updated { color: var(--muted); font-size: 0.9rem; }
.legal-footer { margin: 32px 0; padding-top: 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem; }

/* Portada */
.hero { text-align: center; padding: 24px 0 8px; }
.hero h1 { margin: 0; line-height: 0; }
.hero h1 img { width: min(100%, 420px); height: auto; }
.hero .tagline { font-size: 1.2rem; font-weight: 600; color: var(--muted); margin: 4px 0 16px; }
.store-badge { display: inline-block; background: var(--fg); color: #fff; padding: 10px 18px; border-radius: 8px; font-weight: 600; }
.home ol { padding-left: 20px; margin: 0; }
.home li + li { margin-top: 6px; }