/* ================= Spaced review (js/review.js) ================= */
.rv { max-width: 980px; margin: 0 auto; }
.rv-hero h1 { font-size: 28px; }
.rv-catchup { display: flex; gap: 14px; align-items: center; margin-top: 16px; border-color: var(--gold); background: color-mix(in srgb, var(--gold) 10%, var(--panel)); }
.rv-catchup .big-ico { font-size: 34px; flex: none; }
.rv-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 18px 0; }
.rv-stat { background: var(--panel); border: 2px solid var(--line); border-radius: 16px; padding: 12px 10px; text-align: center; }
.rv-stat .v { font-size: 24px; font-weight: 900; }
.rv-stat .k { font-size: 11px; font-weight: 900; text-transform: uppercase; letter-spacing: .06em; color: var(--ink2); }
.rv-stat small { color: var(--ink2); font-weight: 600; font-size: 12px; }
.rv-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-bottom: 18px; }
.rv-grid > .card { min-width: 0; }
.rv-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.rv-head h3 { margin: 0; font-size: 18px; }
.rv-tile p { margin: 0 0 14px; }
.rv-sm { font-size: 12.5px; font-weight: 600; }
.rv-how { margin-top: 14px; color: var(--ink2); }
.rv-how summary { cursor: pointer; font-weight: 800; color: var(--brand); }
.rv-how li { margin: 4px 0; }

/* heatmap */
.rv-heat-scroll { overflow-x: auto; padding-bottom: 4px; }
.rv-months { display: grid; grid-auto-flow: column; grid-auto-columns: 14px; gap: 3px; font-size: 10px; font-weight: 800; color: var(--ink2); height: 14px; white-space: nowrap; }
.rv-heat { display: grid; grid-auto-flow: column; grid-auto-columns: 14px; gap: 3px; width: max-content; }
.rv-wk { display: grid; grid-template-rows: repeat(7, 14px); gap: 3px; }
.rv-heat i, .rv-legend i { display: block; width: 14px; height: 14px; border-radius: 4px; background: var(--soft); }
.rv-heat i.fut { background: transparent; }
.rv-heat i.today { outline: 2px solid var(--brand); outline-offset: -1px; }
.rv-heat i.l1, .rv-legend i.l1 { background: color-mix(in srgb, var(--teal) 30%, var(--soft)); }
.rv-heat i.l2, .rv-legend i.l2 { background: color-mix(in srgb, var(--teal) 55%, var(--soft)); }
.rv-heat i.l3, .rv-legend i.l3 { background: color-mix(in srgb, var(--teal) 80%, var(--soft)); }
.rv-heat i.l4, .rv-legend i.l4 { background: var(--teal-d); }
.rv-legend { display: flex; gap: 4px; align-items: center; justify-content: flex-end; margin-top: 8px; font-size: 11px; }
.rv-legend i { width: 12px; height: 12px; }

/* forecast */
.rv-bars { display: flex; align-items: flex-end; gap: 6px; height: 150px; padding-top: 18px; }
.rv-bars.dense { gap: 2px; }
.rv-bar { flex: 1; min-width: 0; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; position: relative; padding-bottom: 18px; }
.rv-bar i { display: block; width: 100%; min-height: 2px; border-radius: 6px 6px 2px 2px; background: linear-gradient(180deg, var(--brand), var(--pink)); }
.rv-bar:first-child i { background: var(--pink); }
.rv-bar b { font-size: 11px; font-weight: 900; color: var(--ink2); }
.rv-bar span { position: absolute; bottom: 0; font-size: 10.5px; font-weight: 800; color: var(--ink2); white-space: nowrap; }

/* session */
.rv-left { font-weight: 900; color: var(--ink2); white-space: nowrap; }
.rv-front { font-size: 22px; font-weight: 800; line-height: 1.4; margin: 4px 0 14px; overflow-wrap: anywhere; }
.rv-back hr { border: 0; border-top: 2px dashed var(--line); margin: 6px 0 14px; }
.rv-backtxt { font-size: 19px; font-weight: 700; line-height: 1.45; margin-bottom: 12px; overflow-wrap: anywhere; }
.rv-gradebox:empty { display: none; }
.rv-gradebox { margin-top: 18px; }
.rv-ask { text-align: center; font-weight: 800; color: var(--ink2); margin: 0 0 10px; }
.rv-grades { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.rv-g { --c: var(--brand); display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 10px 6px 8px; border-radius: 16px; border: 2px solid var(--c); background: color-mix(in srgb, var(--c) 10%, var(--panel)); box-shadow: 0 4px 0 var(--c); color: var(--ink); font: inherit; cursor: pointer; transition: transform .08s; }
.rv-g:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 1px 0 var(--c); }
.rv-g .gl { font-weight: 900; font-size: 16px; color: var(--c); }
.rv-g .gi { font-weight: 700; font-size: 13px; color: var(--ink2); }
.rv-g kbd { margin-top: 2px; }
.rv-g.sugg { background: var(--c); }
.rv-g.sugg .gl, .rv-g.sugg .gi { color: #fff; }
.rv-g:disabled { opacity: .35; cursor: default; box-shadow: none; }
.rv-g.again, .rv-t.again { --c: var(--red); }
.rv-g.hard, .rv-t.hard { --c: var(--orange); }
.rv-g.good, .rv-t.good { --c: var(--teal-d); }
.rv-g.easy, .rv-t.easy { --c: var(--blue); }
.rv-tally { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-top: 18px; }
.rv-t { border: 2px solid var(--c); border-radius: 14px; padding: 8px; color: var(--c); }
.rv-t .v { font-size: 22px; font-weight: 900; }
.rv-t .k { font-size: 11px; font-weight: 900; text-transform: uppercase; letter-spacing: .06em; }

/* card manager + editor */
.rv-cards { display: flex; flex-direction: column; gap: 10px; }
.rv-crow { display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; }
.rv-crow[hidden] { display: none; }
.rv-cmain { flex: 1; min-width: 0; }
.rv-cf { font-weight: 800; overflow-wrap: anywhere; }
.rv-cb { margin-top: 4px; font-size: 14px; overflow-wrap: anywhere; max-height: 4.5em; overflow: hidden; }
.rv-cmeta { margin-top: 8px; gap: 6px; }
.rv-cact { display: flex; gap: 6px; flex: none; }
.rv-editor { max-width: 560px; }
.rv-editor h2 { margin-top: 0; }
.rv-field { display: block; margin-bottom: 10px; }
.rv-field span { display: block; font-weight: 800; font-size: 13px; color: var(--ink2); margin-bottom: 4px; }
.rv-field input, .rv-field textarea { width: 100%; font: inherit; padding: 10px 12px; border-radius: 12px; border: 2px solid var(--line); background: var(--panel); color: var(--ink); resize: vertical; }
.rv-field input:focus, .rv-field textarea:focus { outline: none; border-color: var(--brand); }
.rv-prev:empty { display: none; }
.rv-prev { display: flex; justify-content: center; margin: -4px 0 10px; padding: 6px; background: var(--soft); border-radius: 12px; }
.rv-err { color: var(--red-d); font-weight: 800; }
.rv-check { display: flex; align-items: center; gap: 10px; padding: 8px 0; font-weight: 700; }
.rv-check input { width: 18px; height: 18px; accent-color: var(--brand); }

@media (max-width: 760px) {
  .rv-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rv-grid { grid-template-columns: minmax(0, 1fr); }
  .rv-hero { grid-template-columns: auto 1fr; }
  .rv-hero .btn { grid-column: 1 / -1; justify-self: stretch; text-align: center; }
  .rv-hero h1 { font-size: 22px; }
}
@media (max-width: 480px) {
  .rv-grades { gap: 6px; }
  .rv-g { padding: 8px 2px 6px; }
  .rv-g .gl { font-size: 14px; }
  .rv-g kbd { display: none; }
  .rv-front { font-size: 19px; }
  .rv-crow { flex-direction: column; }
}