/* Today, the topic picker, and the review focus screen. */

/* --- Today ---------------------------------------------------------------- */
.today .page-head h1 { font-size: var(--text-2xl); margin-top: 0.3rem; }
.today-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 1fr); gap: 1.25rem; align-items: start; }
@media (max-width: 1050px) { .today-grid { grid-template-columns: minmax(0, 1fr); } }
.welcome { display: flex; gap: 1.1rem; align-items: center; margin-bottom: 1.25rem;
  background: linear-gradient(120deg, var(--accent-soft), transparent 70%), var(--card); }
.welcome .mark { width: 3.25rem; height: 3.25rem; border-radius: 12px; box-shadow: 0 6px 18px oklch(0.25 0.06 285 / 0.3); }
.welcome p { margin: 0.3rem 0 0; max-width: 42rem; }
.anki-found { display: flex; gap: 1rem; align-items: center; margin-bottom: 1.25rem; }
.anki-found > .icon { width: 1.6rem; height: 1.6rem; color: var(--accent-text); flex: none; }
.anki-found > div { flex: 1; }
.anki-found h2 { font-size: var(--text-md); margin: 0; }
.anki-found p { margin: 0.2rem 0 0; }
@media (max-width: 640px) { .anki-found { flex-wrap: wrap; } }
.revise { padding: 1.5rem 1.6rem 1.1rem; }
.revise-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem 1.5rem;
  padding-bottom: 1.25rem; margin-bottom: 1rem; border-bottom: 1px solid var(--line); }
.revise-total { font: 500 var(--text-lg)/1.2 var(--font-read); color: var(--fg-soft); }
.revise-total .big { display: inline-block; margin-right: 0.15em; font: 600 3.4rem/1 var(--font-read);
  letter-spacing: -0.03em; color: var(--fg); vertical-align: -0.12em; }
.revise-sub { margin: 0.5rem 0 0; color: var(--muted); font-size: var(--text-sm); }
.start { box-shadow: 0 6px 20px oklch(0.5 0.17 285 / 0.3), inset 0 1px 0 oklch(1 0 0 / 0.14); }
.start .icon { fill: currentColor; stroke-width: 0; width: 0.9em; }
.scope-title { margin: 0 0 0.4rem 0.35rem; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.6rem; margin-bottom: 1.25rem; }
.stat { display: flex; flex-direction: column; gap: 0.15rem; padding: 0.85rem 1rem; border-radius: var(--r-lg);
  background: var(--card); border: 1px solid var(--line); }
.stat .num { font: 600 1.75rem/1.1 var(--font-read); font-variant-numeric: tabular-nums; }
.stat .label { color: var(--muted); font-size: var(--text-xs); }

.forecast { margin-bottom: 1.25rem; }
.bars { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(7, 1fr); gap: 0.4rem; height: 7.5rem; }
.bars li { display: grid; grid-template-rows: 1fr auto auto; justify-items: center; gap: 0.2rem; min-width: 0; }
.bars .bar { position: relative; width: 100%; max-width: 2.2rem; height: 100%; border-radius: 7px; background: var(--sunken); overflow: hidden; }
.bars .fill { position: absolute; inset: auto 0 0; height: max(var(--h), 3px); border-radius: 7px;
  background: linear-gradient(to top, var(--accent), color-mix(in oklch, var(--accent) 55%, var(--card)));
  transform-origin: bottom; animation: grow-up 700ms var(--spring) both; }
.bars li:first-child .fill { background: linear-gradient(to top, var(--accent-hover), var(--accent)); }
.bars li:nth-child(2) .fill { animation-delay: 40ms; } .bars li:nth-child(3) .fill { animation-delay: 80ms; }
.bars li:nth-child(4) .fill { animation-delay: 120ms; } .bars li:nth-child(5) .fill { animation-delay: 160ms; }
.bars li:nth-child(6) .fill { animation-delay: 200ms; } .bars li:nth-child(7) .fill { animation-delay: 240ms; }
@keyframes grow-up { from { transform: scaleY(0); } }
.bars .n { font-size: var(--text-xs); font-weight: 600; color: var(--fg-soft); }
.bars .d { font-size: 0.68rem; color: var(--faint); }

.add-tiles { display: grid; gap: 0.5rem; }
.add-tile { display: flex; align-items: center; gap: 0.9rem; padding: 0.8rem 1rem; border-radius: var(--r-lg);
  background: var(--card); border: 1px solid var(--line); color: var(--fg); text-decoration: none;
  transition: transform var(--dur-2) var(--spring), border-color var(--dur-1), box-shadow var(--dur-2); }
.add-tile:hover { color: var(--fg); border-color: var(--accent-line); transform: translateY(-2px); box-shadow: var(--shadow-2); }
.add-tile:active { transform: scale(0.99); }
.add-icon { display: grid; place-items: center; width: 2.4rem; height: 2.4rem; flex: none; border-radius: 11px;
  background: var(--accent-soft); color: var(--accent-text); }
.add-icon .icon { width: 1.2rem; height: 1.2rem; }
.add-text { display: grid; min-width: 0; }
.add-name { font-weight: 600; font-size: var(--text-sm); }
.add-desc { color: var(--muted); font-size: var(--text-xs); }
.add-example { font: italic 0.82rem/1.4 var(--font-read); color: var(--faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.add-plus { margin-left: auto; color: var(--faint); transition: transform var(--dur-2) var(--spring), color var(--dur-1); }
.add-tile:hover .add-plus { color: var(--accent-text); transform: rotate(90deg); }

/* --- topic picker --------------------------------------------------------- */
.scope-picker { display: grid; gap: 1px; }
.scope-row { display: flex; align-items: center; gap: 0.6rem; padding: 0.42rem 0.6rem;
  padding-left: calc(0.6rem + var(--depth, 0) * 1.25rem); border-radius: var(--r-sm);
  transition: background var(--dur-1) var(--ease-out); }
.scope-row:hover { background: var(--hover); }
.scope-row:has(input:checked:not(:disabled)) { background: var(--accent-soft); }
.scope-row.implied { opacity: 0.6; }
.scope-row.implied input { cursor: default; }
.scope-all { font-weight: 600; }
.scope-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: var(--text-sm); }
.scope-counts { display: flex; gap: 0.7rem; }
.scope-empty { margin: 0.6rem; font-size: var(--text-sm); }
.scope-picker.htmx-request { opacity: 0.85; }

/* --- review focus screen --------------------------------------------------- */
.review-screen { position: relative; min-height: 100vh; display: flex; flex-direction: column; align-items: center;
  padding: 1rem clamp(1rem, 4vw, 3rem) 2.5rem; }
.review-screen .exit { position: absolute; top: 1rem; left: 1rem; z-index: 2; }
#card { width: 100%; max-width: 52rem; display: flex; flex-direction: column; flex: 1; }
#card > .review, #card > .done { margin-top: clamp(0.5rem, 8vh, 5rem); }

.card-meta { display: flex; align-items: center; gap: 1rem; padding: 0.1rem 0 1.4rem; margin-left: 5.5rem; }
@media (max-width: 900px) { .card-meta { margin-left: 0; padding-top: 2.5rem; flex-wrap: wrap; } }
.scope-chip { display: inline-flex; align-items: center; gap: 0.45rem; max-width: 22rem; min-height: 2rem; padding: 0.2rem 0.55rem 0.2rem 0.7rem;
  border: 1px solid var(--line-strong); border-radius: var(--r-pill); background: var(--card); color: var(--fg-soft);
  font-size: var(--text-sm); font-weight: 500; cursor: pointer; transition: border-color var(--dur-1), color var(--dur-1); }
.scope-chip:hover { border-color: var(--accent-line); color: var(--fg); }
.scope-chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.scope-chip .icon { width: 0.95rem; height: 0.95rem; color: var(--muted); }
.progress { flex: 1; min-width: 4rem; height: 6px; border-radius: var(--r-pill); background: var(--sunken); overflow: hidden; }
.progress span { display: block; height: 100%; width: 0; border-radius: inherit;
  background: linear-gradient(90deg, color-mix(in oklch, var(--accent) 60%, var(--good)), var(--accent));
  transition: width 600ms var(--spring); }
.queue-info { display: flex; flex: none; gap: 0.35rem; }
.pill { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.15rem 0.55rem; border-radius: var(--r-pill);
  background: var(--sunken); color: var(--fg-soft); font-size: var(--text-xs); font-weight: 600; font-variant-numeric: tabular-nums;
  white-space: nowrap; }
.pill .lbl { font-weight: 400; color: var(--muted); margin-left: -0.2rem; }
.pip { display: inline-block; width: 0.45rem; height: 0.45rem; border-radius: 50%; }
.pip.is-due { background: var(--accent); } .pip.is-new { background: var(--easy); } .pip.is-done { background: var(--good); }
@media (max-width: 640px) { .pill .lbl { display: none; } }

.review { display: flex; flex-direction: column; gap: 1.25rem; }
.card-surface { position: relative; padding: clamp(1.5rem, 4vw, 2.75rem) clamp(1.25rem, 4.5vw, 3.25rem) clamp(1.25rem, 3vw, 2rem);
  border-radius: var(--r-xl); background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow-2);
  transform-origin: 50% 50%; backface-visibility: hidden; will-change: transform; }
.card-surface::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none;
  box-shadow: 0 0 0 0 transparent; transition: box-shadow var(--dur-2); }
.review.left-1 .card-surface::before { box-shadow: 0 0 0 2px var(--again), 0 0 32px color-mix(in oklch, var(--again) 40%, transparent); }
.review.left-2 .card-surface::before { box-shadow: 0 0 0 2px var(--hard), 0 0 32px color-mix(in oklch, var(--hard) 40%, transparent); }
.review.left-3 .card-surface::before { box-shadow: 0 0 0 2px var(--good), 0 0 32px color-mix(in oklch, var(--good) 40%, transparent); }
.review.left-4 .card-surface::before { box-shadow: 0 0 0 2px var(--easy), 0 0 32px color-mix(in oklch, var(--easy) 40%, transparent); }
.card-label { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1.25rem; font-size: var(--text-xs); }
.card-tools { margin-left: auto; display: inline-flex; gap: 0.25rem; }
.card-tools .button { color: var(--faint); }
.card-tools .button:hover { color: var(--fg); }
.comment-count:empty { display: none; }
.comment-help { margin: 0 0.3rem 0.8rem; font-size: var(--text-sm); }

/* Editing the card in the middle of a review: the normal editor in a dialog. */
.edit-dialog { width: min(52rem, calc(100vw - 2rem)); max-height: calc(100vh - 3rem); overflow: auto; margin: auto;
  padding: 1.25rem 1.4rem; border: 1px solid var(--line); border-radius: var(--r-xl); background: var(--bg);
  color: var(--fg); box-shadow: var(--shadow-3); }
.edit-dialog::backdrop { background: oklch(0.1 0.02 280 / 0.35); backdrop-filter: blur(3px); }
.edit-dialog[open] { animation: dialog-in var(--dur-3) var(--spring); }
@keyframes dialog-in { from { opacity: 0; transform: translateY(14px) scale(0.98); } }
.edit-dialog .form-actions { align-items: center; }
.form-actions-end { margin-left: auto; display: inline-flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.face { font-size: var(--text-card); color: var(--fg); overflow-wrap: anywhere; }
.face > :last-child, .face p:last-child { margin-bottom: 0; }
.face .divider, .face > hr { margin: 1.5rem -0.5rem; border: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 20%, var(--line-strong) 80%, transparent); }
.face.back:not([hidden]) .divider { animation: draw-line 500ms var(--ease-out) both; }
@keyframes draw-line { from { transform: scaleX(0); opacity: 0; } }
.extra { margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--fg-soft); font-size: 0.82em; }
.face img { max-width: 100%; max-height: 24rem; height: auto; vertical-align: middle; border-radius: var(--r-sm); }

.cloze { padding: 0.02em 0.3em; border-radius: 5px; background: var(--hide); color: var(--hide-fg); font-weight: 600;
  box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.cloze.revealed { background: linear-gradient(var(--accent-soft), var(--accent-soft)) no-repeat 0 0 / 100% 100%;
  color: var(--accent-text); animation: sweep 600ms var(--ease-out) both; }
@keyframes sweep { from { background-size: 0% 100%; } }

.reveal-hint { display: flex; align-items: center; justify-content: center; gap: 0.6rem; width: 100%; margin-top: 2rem;
  padding: 0.75rem; border: 1px dashed var(--line-strong); border-radius: var(--r-lg); background: none;
  color: var(--muted); font-size: var(--text-sm); cursor: pointer; transition: all var(--dur-2) var(--ease-out); }
.reveal-hint:hover { border-style: solid; border-color: var(--accent-line); color: var(--fg); background: var(--accent-soft); }

.grades { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.6rem; }
.grade { --c: var(--accent); position: relative; display: flex; flex-direction: column; gap: 0.3rem; padding: 0.75rem 0.9rem;
  border: 1px solid var(--line-strong); border-radius: var(--r-lg); background: var(--card); text-align: left;
  cursor: pointer; box-shadow: var(--shadow-1);
  transition: transform var(--dur-2) var(--spring), border-color var(--dur-1), background var(--dur-1), box-shadow var(--dur-2); }
.grade-1 { --c: var(--again); } .grade-2 { --c: var(--hard); } .grade-3 { --c: var(--good); } .grade-4 { --c: var(--easy); }
.grade:hover:not(:disabled) { transform: translateY(-2px); border-color: var(--c);
  background: color-mix(in oklch, var(--c) 8%, var(--card)); }
.grade:active:not(:disabled) { transform: scale(0.97); }
.grade-top { display: flex; align-items: center; gap: 0.5rem; }
.grade-top kbd { border-color: color-mix(in oklch, var(--c) 45%, transparent); color: var(--c); background: transparent; }
.grade-name { font-weight: 650; color: var(--c); }
.grade-help { font-size: var(--text-xs); line-height: 1.35; color: var(--muted); }
.grade.preselected { border-color: var(--c); background: color-mix(in oklch, var(--c) 10%, var(--card));
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--c) 22%, transparent), var(--shadow-2); }
.grade.preselected::after { content: attr(data-space); position: absolute; top: 0.6rem; right: 0.7rem; padding: 0 0.4rem;
  border-radius: var(--r-pill); background: var(--c); color: var(--card); font-size: 0.62rem; font-weight: 700;
  letter-spacing: 0.02em; animation: pop-in var(--dur-3) var(--spring-bouncy) both; }
.grade:disabled { opacity: 0.35; cursor: not-allowed; box-shadow: none; }
.suggest-note { grid-column: 1 / -1; min-height: 1.2em; font-size: var(--text-xs); color: var(--faint); text-align: center; }
@media (max-width: 640px) { .grades { grid-template-columns: repeat(2, 1fr); } }

/* typed answers */
.answer-box { margin-top: 1.5rem; }
.answer-box .rich-editor { min-height: 6rem; font-size: 0.8em; }
.answer-actions { display: flex; gap: 0.9rem; align-items: center; margin-top: 0.7rem; font-size: var(--text-xs); }
.keypoint { border-bottom: 2px solid var(--good); border-radius: 2px; }
.keypoint.found { background: color-mix(in oklch, var(--good) 18%, transparent); }
.keypoint.missed { border-bottom-color: var(--again); background: color-mix(in oklch, var(--again) 15%, transparent); }
.check { font-size: 0.75em; font-family: var(--font-ui); }
.check-score { display: flex; align-items: baseline; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.75rem; font-weight: 650; font-size: 1.05rem; }
.check-score.pass { color: var(--good); } .check-score.fail { color: var(--again); }
.check-score .muted { font-weight: 400; font-size: var(--text-xs); }
.kp-list { list-style: none; padding: 0; margin: 0 0 1.25rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.kp { display: inline-flex; gap: 0.45rem; align-items: center; padding: 0.3rem 0.75rem; border-radius: var(--r-pill);
  border: 1px solid var(--line-strong); font-size: var(--text-sm); transition: all var(--dur-2) var(--ease-out); }
.kp p { margin: 0; }
.kp-mark { font-weight: 700; }
.kp.found { background: color-mix(in oklch, var(--good) 12%, transparent); border-color: color-mix(in oklch, var(--good) 45%, transparent); }
.kp.found .kp-mark { color: var(--good); }
.kp.missed { cursor: pointer; background: color-mix(in oklch, var(--again) 10%, transparent); border-color: color-mix(in oklch, var(--again) 45%, transparent); }
.kp.missed:hover { border-color: var(--again); }
.kp.missed .kp-mark { color: var(--again); }
.kp-said { font-size: var(--text-xs); color: var(--muted); }
.kp.overridden { background: color-mix(in oklch, var(--hard) 14%, transparent); border-color: var(--hard); }
.kp.overridden .kp-mark { color: var(--hard); }
.kp.overridden .kp-said { color: var(--hard); font-weight: 600; }
.kp.overridden .kp-said::before { content: "✓ "; }
.check-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) { .check-cols { grid-template-columns: 1fr; } }
.check-label { margin-bottom: 0.35rem; font: 600 0.68rem/1.2 var(--font-ui); letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--faint); }
.face.back > .check { margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.typed-answer, .model-answer { padding: 0.75rem 0.9rem; border-radius: var(--r); background: var(--sunken);
  border: 1px solid var(--line); font: 1.05rem/1.55 var(--font-read); }
.typed-answer p, .model-answer p { margin: 0 0 0.4em; }

/* done */
.done { display: grid; justify-items: center; gap: 0.6rem; margin: 3vh auto 0; max-width: 34rem; text-align: center; }
.done h2 { font-size: var(--text-xl); margin-top: 0.4rem; }
.mark-anim { width: 4.5rem; height: 4.5rem; border-radius: 17px; box-shadow: 0 10px 30px oklch(0.25 0.06 285 / 0.35); }
.day-summary { width: 100%; margin-top: 0.4rem; padding: 1.1rem 1.25rem; border-radius: var(--r-lg); background: var(--card);
  border: 1px solid var(--line); }
.day-summary p { margin-bottom: 0.8rem; }
.split { display: flex; gap: 3px; height: 10px; border-radius: var(--r-pill); overflow: hidden; }
.split .seg { min-width: 6px; animation: grow-x 700ms var(--spring) both; transform-origin: left; }
@keyframes grow-x { from { transform: scaleX(0); } }
.seg.grade-1, .pip.grade-1 { background: var(--again); } .seg.grade-2, .pip.grade-2 { background: var(--hard); }
.seg.grade-3, .pip.grade-3 { background: var(--good); } .seg.grade-4, .pip.grade-4 { background: var(--easy); }
.split-legend { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.4rem 1rem; margin-top: 0.7rem;
  font-size: var(--text-xs); color: var(--muted); }
.split-legend > span { display: inline-flex; align-items: center; gap: 0.35rem; }
.done-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.5rem; margin-top: 0.8rem; }

/* the topic picker and the comment box as popovers */
.scope-pop, .comment-pop { position: fixed; inset: 4.5rem auto auto 50%; translate: -50% 0; margin: 0; width: min(28rem, calc(100vw - 2rem));
  max-height: calc(100vh - 7rem); overflow: auto; padding: 0.9rem 0.6rem 0.6rem; transform-origin: top center; }
.scope-pop:not(:popover-open), .comment-pop:not(:popover-open) { display: none; opacity: 0;
  transform: scale(0.96) translateY(-6px); }
.scope-pop::backdrop, .comment-pop::backdrop { background: oklch(0.1 0.02 280 / 0.25); backdrop-filter: blur(2px); }
.comment-pop { width: min(34rem, calc(100vw - 2rem)); padding-inline: 0.9rem; }
.scope-pop-head { display: flex; align-items: center; justify-content: space-between; padding: 0 0.3rem 0.6rem 0.6rem; }