/* ===== Notebook Daily: dark, playful, colourful ===== */
:root {
  --bg: #0c0d18;
  --card: #161930;
  --card-2: #1d2042;
  --input: #0e1024;
  --border: rgba(255, 255, 255, .08);
  --border-2: rgba(255, 255, 255, .16);
  --text: #f1f2ff;
  --muted: #a3a8d2;
  --faint: #6a70a3;

  --green: #3ee08f;
  --yellow: #ffd25e;
  --red: #ff6b6b;
  --amber: #ffa24c;

  --accent: #ff6fae;
  --r-lg: 24px;
  --r-md: 16px;
  --r-sm: 12px;
  --f-head: 'Fredoka', ui-rounded, 'Segoe UI', system-ui, sans-serif;
  --f-body: 'Nunito', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --f-hand: 'Patrick Hand', 'Comic Sans MS', cursive;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
button { font: inherit; color: inherit; cursor: pointer; }
button:disabled { cursor: default; }
code { font-family: ui-monospace, Consolas, monospace; font-size: .9em; background: rgba(255,255,255,.08); padding: 1px 5px; border-radius: 6px; }
b { font-weight: 800; }

/* floating colour blobs */
.blobs { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.blobs i { position: absolute; width: 46vmax; height: 46vmax; border-radius: 50%; filter: blur(90px); opacity: .17; animation: drift 28s ease-in-out infinite alternate; }
.blobs i:nth-child(1) { background: #ff6fae; top: -20vmax; left: -16vmax; }
.blobs i:nth-child(2) { background: #4cc9f0; bottom: -22vmax; right: -18vmax; animation-delay: -9s; }
.blobs i:nth-child(3) { background: #a78bfa; top: 35%; left: 55%; width: 30vmax; height: 30vmax; opacity: .11; animation-delay: -15s; }
@keyframes drift { to { transform: translate(5vmax, 4vmax) scale(1.1); } }

.wrap { max-width: 760px; margin: 0 auto; padding: 14px 16px 56px; }

/* ---------- top bar ---------- */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 6px 0 4px; }
.brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; }
.logo {
  width: 42px; height: 42px; display: grid; place-items: center; font-size: 22px;
  border-radius: 14px; background: linear-gradient(135deg, #ff6fae, #ff9f43 50%, #4cc9f0);
  box-shadow: 0 6px 18px rgba(255, 111, 174, .35); transform: rotate(-6deg);
}
.title { font-family: var(--f-head); font-weight: 700; font-size: 26px; letter-spacing: .2px; }
.grad { margin-left: 4px; background: linear-gradient(90deg, #ff6fae, #ff9f43, #ffd25e, #4cc9f0, #a78bfa); -webkit-background-clip: text; background-clip: text; color: transparent; }
.top-actions { display: flex; align-items: center; gap: 8px; }
.streak { font-family: var(--f-head); font-weight: 600; padding: 6px 12px; border-radius: 999px; background: rgba(255, 159, 67, .14); border: 1px solid rgba(255, 159, 67, .35); white-space: nowrap; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 12px; border: 1px solid var(--border-2);
  background: var(--card); font-family: var(--f-head); font-weight: 700; font-size: 18px;
  display: grid; place-items: center; transition: transform .15s, background .15s;
}
.icon-btn:hover { transform: translateY(-2px); background: var(--card-2); }
.icon-btn.on { background: var(--card-2); border-color: var(--accent); }

.subbar { display: flex; justify-content: space-between; align-items: center; gap: 10px; color: var(--muted); font-size: 14px; margin: 6px 2px 14px; flex-wrap: wrap; }
.subbar b { font-family: var(--f-head); color: var(--text); font-variant-numeric: tabular-nums; }
#dayLabel { font-family: var(--f-head); font-weight: 600; color: var(--text); }

/* ---------- today's tiles (wordle-ish row) ---------- */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin-bottom: 16px; }
.tile {
  position: relative; display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 10px; align-items: center;
  text-align: left; padding: 10px 12px; min-height: 64px; border-radius: var(--r-md);
  background: var(--card); border: 2px solid var(--border-2);
  transition: transform .18s, border-color .18s, box-shadow .18s, background .3s;
  animation: pop-in .45s cubic-bezier(.2, 1.4, .4, 1) both; animation-delay: calc(var(--i) * 70ms);
}
.tile:hover { transform: translateY(-2px); }
.tile.active { border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent), 0 10px 26px rgba(0, 0, 0, .35); transform: translateY(-3px); }
.t-emoji { grid-row: 1 / 3; font-size: 26px; line-height: 1; filter: drop-shadow(0 3px 6px rgba(0,0,0,.4)); }
.t-name { font-family: var(--f-head); font-weight: 600; font-size: 15px; line-height: 1.15; }
.t-meta { font-size: 12px; color: var(--muted); font-weight: 700; letter-spacing: .5px; }
.t-num { position: absolute; top: -9px; right: -7px; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-family: var(--f-head); font-size: 12px; font-weight: 700; background: var(--accent); color: #140f1c; }
.tile.perfect { background: linear-gradient(135deg, color-mix(in srgb, var(--green) 32%, var(--card)), var(--card)); border-color: var(--green); }
.tile.helped { background: linear-gradient(135deg, color-mix(in srgb, var(--yellow) 26%, var(--card)), var(--card)); border-color: var(--yellow); }
.tile.missed { background: linear-gradient(135deg, color-mix(in srgb, var(--red) 26%, var(--card)), var(--card)); border-color: var(--red); }
.tile.perfect .t-meta { color: var(--green); }
.tile.helped .t-meta { color: var(--yellow); }
.tile.missed .t-meta { color: var(--red); }
.tile.flip { animation: flip .6s ease both; }
@keyframes flip { 0% { transform: rotateX(0); } 50% { transform: rotateX(90deg); } 100% { transform: rotateX(0); } }
@keyframes pop-in { from { opacity: 0; transform: scale(.85) translateY(8px); } to { opacity: 1; transform: none; } }

.practice-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 16px; }
.practice-bar .label { font-family: var(--f-head); font-weight: 600; margin-right: 4px; }
.ptopic { padding: 8px 14px; border-radius: 999px; border: 2px solid var(--border-2); background: var(--card); font-weight: 700; transition: transform .15s; }
.ptopic:hover { transform: translateY(-2px); }
.ptopic.active { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 18%, var(--card)); }
.ptopic.back { margin-left: auto; }

/* ---------- question card ---------- */
.card {
  position: relative; border-radius: var(--r-lg); background: var(--card); border: 1px solid var(--border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .45); overflow: hidden;
}
.card::before { content: ''; position: absolute; inset: 0 0 auto 0; height: 6px; background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 40%, #fff)); }
.card.enter { animation: card-in .45s cubic-bezier(.2, 1.2, .4, 1) both; }
@keyframes card-in { from { opacity: 0; transform: translateY(18px) scale(.98); } to { opacity: 1; transform: none; } }
.card.shake { animation: shake .45s; }
@keyframes shake { 10%, 90% { transform: translateX(-2px); } 20%, 80% { transform: translateX(4px); } 30%, 50%, 70% { transform: translateX(-7px); } 40%, 60% { transform: translateX(7px); } }

.card-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 18px 20px 10px; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border-radius: 999px; font-family: var(--f-head); font-weight: 600; font-size: 14px; background: color-mix(in srgb, var(--accent) 16%, transparent); color: color-mix(in srgb, var(--accent) 75%, #fff); border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); }
.chip-emoji { font-size: 17px; }
.nb-badge { font-family: var(--f-hand); font-size: 17px; padding: 2px 10px; border-radius: 8px; background: #ffe27a; color: #2b2104; transform: rotate(-2deg); box-shadow: 0 4px 10px rgba(0,0,0,.3); }
.practice-badge { font-size: 13px; font-weight: 800; color: var(--muted); letter-spacing: .6px; text-transform: uppercase; }
.lives { margin-left: auto; display: flex; gap: 3px; }
.heart { width: 22px; height: 22px; fill: #ff5c8a; filter: drop-shadow(0 2px 6px rgba(255, 92, 138, .5)); transition: transform .3s; }
.heart.lost { fill: #343860; filter: none; transform: scale(.85); }

/* ruled notebook paper with a margin line in the topic colour */
.paper {
  position: relative; padding: 14px 22px 18px 66px;
  background:
    linear-gradient(90deg, transparent 46px, color-mix(in srgb, var(--accent) 55%, transparent) 46px, color-mix(in srgb, var(--accent) 55%, transparent) 48px, transparent 48px),
    repeating-linear-gradient(180deg, transparent 0 31px, rgba(255, 255, 255, .045) 31px 32px);
}
.prompt { font-size: 17px; }
.prompt p { margin: 0 0 8px; }
.math-display { overflow-x: auto; overflow-y: hidden; padding: 4px 2px; }
.math-display .katex-display { margin: .45em 0; }
.katex { font-size: 1.1em; }
.tex-fallback { background: none; padding: 0; }

.part { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--border-2); }
.plabel { font-weight: 700; color: var(--muted); font-size: 14px; margin-bottom: 10px; }
.part.solved .plabel::after { content: ' ✓'; color: var(--green); }

.fields { display: flex; flex-wrap: wrap; gap: 12px; }
.field { display: flex; align-items: center; gap: 8px; position: relative; padding-bottom: 16px; }
.flabel { white-space: nowrap; font-size: 16px; }
.field input {
  width: 128px; padding: 10px 12px; border-radius: var(--r-sm); border: 2px solid #2b2f58; background: var(--input);
  color: var(--text); font-family: var(--f-head); font-size: 18px; font-weight: 600; outline: none; transition: border-color .15s, box-shadow .15s;
}
.field input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent); }
.field.ok input { border-color: var(--green); background: color-mix(in srgb, var(--green) 12%, var(--input)); }
.field.bad input { border-color: var(--red); background: color-mix(in srgb, var(--red) 10%, var(--input)); animation: shake .4s; }
.field.ok::after, .field.bad::after { position: absolute; right: 8px; top: 11px; font-weight: 800; }
.field.ok::after { content: '✓'; color: var(--green); }
.field.bad::after { content: '✗'; color: var(--red); }
.preview { position: absolute; left: auto; right: 4px; bottom: -2px; font-size: 12px; color: var(--muted); font-weight: 700; }
.preview.err { color: var(--amber); }

.choices { display: grid; gap: 8px; }
.choice {
  display: flex; align-items: center; gap: 12px; text-align: left; padding: 11px 14px; border-radius: var(--r-sm);
  background: var(--input); border: 2px solid #2b2f58; transition: border-color .15s, transform .12s, background .15s;
}
.choice:not(:disabled):hover { border-color: color-mix(in srgb, var(--accent) 60%, #2b2f58); transform: translateX(3px); }
.choice .letter { flex: none; width: 28px; height: 28px; border-radius: 9px; display: grid; place-items: center; font-family: var(--f-head); font-weight: 700; background: var(--card-2); }
.choice.sel { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, var(--input)); }
.choice.sel .letter { background: var(--accent); color: #140f1c; }
.choice.elim { opacity: .38; text-decoration: line-through; text-decoration-color: var(--red); }
.choice.elim .letter { background: var(--red); color: #140f1c; }
.choice.right { border-color: var(--green); background: color-mix(in srgb, var(--green) 14%, var(--input)); opacity: 1; }
.choice.right .letter { background: var(--green); color: #0b1a12; }

.angles { display: flex; align-items: center; gap: 8px; }
.angles input {
  flex: 1; min-width: 0; padding: 12px 14px; border-radius: var(--r-sm); border: 2px solid #2b2f58; background: var(--input);
  color: var(--text); font-family: var(--f-head); font-size: 19px; font-weight: 600; outline: none; letter-spacing: .3px;
}
.angles input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent); }
.angles .unit { font-family: var(--f-head); font-size: 22px; color: var(--muted); }
.atiles { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.atile {
  min-width: 64px; padding: 8px 10px; border-radius: 10px; text-align: center; font-family: var(--f-head); font-weight: 700;
  font-size: 17px; color: #120f1a; animation: tile-flip .5s ease both; animation-delay: calc(var(--i) * 110ms);
}
.atile small { display: block; font-size: 10px; letter-spacing: .4px; text-transform: uppercase; opacity: .8; font-family: var(--f-body); }
.atile.ok { background: var(--green); }
.atile.bad { background: var(--red); }
.atile.range { background: var(--amber); }
.atile.dup { background: #8a8fbf; }
@keyframes tile-flip { 0% { transform: rotateX(90deg); opacity: 0; } 100% { transform: rotateX(0); opacity: 1; } }
.afound { margin-top: 8px; font-size: 14px; color: var(--muted); font-weight: 700; }

/* ---------- hints: sticky notes ---------- */
.hints { display: grid; gap: 12px; padding: 4px 20px 6px; }
.hint {
  position: relative; background: #ffe27a; color: #2a2104; font-family: var(--f-hand); font-size: 19px; line-height: 1.4;
  padding: 14px 16px 12px; border-radius: 4px 4px 16px 4px; transform: rotate(var(--r));
  box-shadow: 0 10px 20px rgba(0, 0, 0, .35); animation: note-in .4s cubic-bezier(.2, 1.4, .4, 1) both;
}
.hint:nth-child(2) { background: #a8f0d1; color: #072a1b; }
.hint:nth-child(3) { background: #ffc2dc; color: #3a0b20; }
.hint-n { display: block; font-family: var(--f-head); font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; opacity: .65; }
.hint .katex { font-size: 1em; }
@keyframes note-in { from { opacity: 0; transform: translateY(-10px) rotate(-6deg) scale(.95); } to { opacity: 1; } }

/* ---------- buttons ---------- */
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding: 14px 20px 20px; }
.actions .spacer { flex: 1; }
.btn {
  border: 0; border-radius: 14px; padding: 12px 18px; font-family: var(--f-head); font-weight: 600; font-size: 16px;
  display: inline-flex; align-items: center; gap: 8px; box-shadow: 0 4px 0 rgba(0, 0, 0, .45); transition: transform .08s, box-shadow .08s, filter .15s;
}
.btn:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 1px 0 rgba(0, 0, 0, .45); }
.btn:disabled { opacity: .45; }
.btn.primary { background: var(--accent); color: #140f1c; }
.btn.primary:hover:not(:disabled) { filter: brightness(1.08); }
.btn.ghost { background: var(--card-2); border: 1px solid var(--border-2); }
.btn.ghost:hover:not(:disabled) { background: #262a52; }
.btn.danger.armed { background: var(--red); color: #1a0909; }
.btn.wide { width: 100%; justify-content: center; }
.pill { font-size: 12px; padding: 1px 7px; border-radius: 999px; background: rgba(255, 255, 255, .12); }

/* ---------- result ---------- */
.result { border-top: 1px solid var(--border); background: linear-gradient(180deg, rgba(255,255,255,.02), transparent); }
.verdict { display: flex; align-items: center; gap: 16px; padding: 18px 20px 6px; }
.v-title { font-family: var(--f-head); font-weight: 700; font-size: 24px; }
.result.won .v-title { color: var(--green); }
.result.lost .v-title { color: var(--red); }
.v-sub { color: var(--muted); font-size: 14px; }
.stars { display: flex; gap: 2px; font-size: 34px; line-height: 1; }
.star { color: #343860; display: inline-block; }
.star.on { color: var(--yellow); text-shadow: 0 0 18px rgba(255, 210, 94, .6); animation: star-pop .55s cubic-bezier(.2, 1.6, .4, 1) both; animation-delay: var(--d); }
@keyframes star-pop { from { transform: scale(0) rotate(-40deg); } to { transform: none; } }
.answer-line { margin: 8px 20px 4px; padding: 10px 14px; border-radius: var(--r-sm); background: var(--input); border: 1px solid var(--border-2); }
.answer-line .lbl { font-family: var(--f-head); font-weight: 600; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .8px; margin-right: 8px; }
.working { margin: 12px 20px 0; border-radius: var(--r-md); border: 1px solid var(--border-2); overflow: hidden; }
.working summary { cursor: pointer; padding: 12px 16px; font-family: var(--f-head); font-weight: 600; background: var(--card-2); list-style: none; }
.working summary::-webkit-details-marker { display: none; }
.working summary::after { content: '▾'; float: right; transition: transform .2s; }
.working[open] summary::after { transform: rotate(180deg); }
.sol { padding: 10px 16px 14px 56px; background:
  linear-gradient(90deg, transparent 38px, rgba(255, 111, 174, .4) 38px, rgba(255, 111, 174, .4) 40px, transparent 40px),
  repeating-linear-gradient(180deg, transparent 0 33px, rgba(255, 255, 255, .04) 33px 34px); }
.sol-line { padding: 5px 0; }
.tip { display: inline-block; font-family: var(--f-hand); font-size: 18px; color: #ffe27a; }

/* ---------- modal ---------- */
.modal { position: fixed; inset: 0; z-index: 50; display: none; align-items: center; justify-content: center; padding: 16px; }
.modal.open { display: flex; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(5, 6, 14, .7); backdrop-filter: blur(6px); animation: fade .2s both; }
.modal-card {
  position: relative; width: min(520px, 100%); max-height: calc(100vh - 32px); overflow-y: auto; overflow-x: hidden; padding: 24px 22px 22px;
  border-radius: var(--r-lg); background: var(--card); border: 1px solid var(--border-2); box-shadow: 0 30px 80px rgba(0, 0, 0, .6);
  animation: card-in .35s cubic-bezier(.2, 1.2, .4, 1) both;
}
.modal-card h2 { font-family: var(--f-head); font-size: 26px; margin: 0 0 4px; }
.modal-card h3 { font-family: var(--f-head); font-size: 17px; margin: 20px 0 8px; color: var(--muted); }
.modal-card p { margin: 6px 0; }
.modal-card ul { padding-left: 20px; margin: 6px 0; }
.modal-card li { margin: 4px 0; }
.x { position: absolute; top: 12px; right: 12px; width: 34px; height: 34px; border-radius: 10px; border: 1px solid var(--border-2); background: var(--card-2); }
.muted { color: var(--muted); }
@keyframes fade { from { opacity: 0; } }

.sum-rows { display: grid; gap: 8px; margin: 16px 0; }
.sum-row { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: var(--r-sm); background: var(--input); border-left: 5px solid var(--accent); }
.sum-row .sq { font-size: 22px; }
.sum-row .nm { flex: 1; font-weight: 700; }
.sum-row .st { font-family: var(--f-head); color: var(--yellow); letter-spacing: 1px; }
.big-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); gap: 10px; margin: 14px 0; }
.big-stats div { text-align: center; padding: 12px 6px; border-radius: var(--r-md); background: var(--input); }
.big-stats b { display: block; font-family: var(--f-head); font-size: 28px; line-height: 1.1; }
.big-stats span { font-size: 12px; color: var(--muted); font-weight: 700; }
.next-in { text-align: center; color: var(--muted); margin: 14px 0 6px; }
.next-in b { font-family: var(--f-head); color: var(--text); font-variant-numeric: tabular-nums; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.row .btn { flex: 1; justify-content: center; }

.bar { margin: 10px 0; }
.bar-top { display: flex; justify-content: space-between; font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.bar-top span:last-child { color: var(--muted); }
.bar-track { height: 12px; border-radius: 999px; background: var(--input); overflow: hidden; }
.bar-fill { height: 100%; border-radius: 999px; background: var(--accent); width: 0; transition: width .8s cubic-bezier(.2, 1, .4, 1); }

.legend { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.legend .atile { min-width: auto; animation: none; font-size: 13px; }
.topic-list { display: grid; gap: 8px; margin-top: 8px; }
.topic-item { display: flex; gap: 10px; align-items: center; padding: 10px 12px; border-radius: var(--r-sm); background: var(--input); border-left: 5px solid var(--accent); }
.topic-item .e { font-size: 22px; }
.topic-item small { display: block; color: var(--muted); }

/* ---------- toast + confetti ---------- */
.toast {
  position: fixed; left: 50%; bottom: 22px; transform: translate(-50%, 30px); z-index: 60; opacity: 0; pointer-events: none;
  padding: 11px 18px; border-radius: 999px; background: #f1f2ff; color: #12131f; font-weight: 800; box-shadow: 0 12px 30px rgba(0,0,0,.45);
  transition: opacity .2s, transform .25s cubic-bezier(.2, 1.4, .4, 1); max-width: calc(100vw - 32px); text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.warn { background: var(--yellow); }
#confetti { position: fixed; inset: 0; width: 100vw; height: 100vh; pointer-events: none; z-index: 70; }

.foot { text-align: center; color: var(--faint); font-size: 13px; margin-top: 28px; }

/* ---------- phones ---------- */
@media (max-width: 560px) {
  .title { font-size: 21px; }
  .logo { width: 36px; height: 36px; font-size: 19px; }
  .icon-btn { width: 36px; height: 36px; font-size: 16px; }
  .streak { padding: 5px 9px; font-size: 14px; }
  .top-actions { gap: 6px; }
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .paper { padding-left: 36px; padding-right: 14px; background:
    linear-gradient(90deg, transparent 18px, color-mix(in srgb, var(--accent) 55%, transparent) 18px, color-mix(in srgb, var(--accent) 55%, transparent) 20px, transparent 20px),
    repeating-linear-gradient(180deg, transparent 0 31px, rgba(255, 255, 255, .045) 31px 32px); }
  .card-head, .actions { padding-left: 14px; padding-right: 14px; }
  .hints { padding-left: 14px; padding-right: 14px; }
  .field input { width: 110px; }
  .sol { padding-left: 30px; background-size: auto; background:
    linear-gradient(90deg, transparent 14px, rgba(255, 111, 174, .4) 14px, rgba(255, 111, 174, .4) 16px, transparent 16px),
    repeating-linear-gradient(180deg, transparent 0 33px, rgba(255, 255, 255, .04) 33px 34px); }
  .working, .answer-line { margin-left: 14px; margin-right: 14px; }
  .verdict { padding-left: 14px; padding-right: 14px; }
}

@media (max-width: 420px) {
  .topbar { gap: 8px; }
  .brand { gap: 8px; min-width: 0; }
  .title { font-size: 18px; white-space: nowrap; }
  .logo { width: 32px; height: 32px; font-size: 17px; border-radius: 11px; }
  .top-actions { gap: 5px; flex: none; }
  .icon-btn { width: 32px; height: 32px; font-size: 15px; border-radius: 10px; }
  .streak { padding: 4px 8px; font-size: 13px; }
  .t-name { font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-delay: 0ms !important; transition-duration: .001ms !important; }
}