:root {
  --bg: #fbf6ee; --card: #ffffff; --ink: #1f2433; --mut: #5b6173; --line: #eadfce; --acc: #e4572e; --acc-ink: #ffffff; --sun: #f2a541;
  --ok: #1f8a5b; --okbg: #e3f5ec; --no: #c4352b; --nobg: #fdebe8; --soft: #f4ece0; --shadow: 0 1px 2px rgba(31, 36, 51, .06), 0 6px 18px rgba(31, 36, 51, .06);
  --r: 20px; --tab: 68px;
  font-family: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #14161d; --card: #1e2230; --ink: #f1ede6; --mut: #a4a9ba; --line: #2c3144; --acc: #ff7a4d; --acc-ink: #1a1208; --ok: #5fd39a; --okbg: #163a2b; --no: #ff8a80; --nobg: #43201d; --soft: #272c3d; --shadow: none; color-scheme: dark; }
}
:root[data-theme="dark"] { --bg: #14161d; --card: #1e2230; --ink: #f1ede6; --mut: #a4a9ba; --line: #2c3144; --acc: #ff7a4d; --acc-ink: #1a1208; --ok: #5fd39a; --okbg: #163a2b; --no: #ff8a80; --nobg: #43201d; --soft: #272c3d; --shadow: none; color-scheme: dark; }

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 17px; line-height: 1.4; }
main { max-width: 560px; margin: 0 auto; padding: 16px 16px calc(var(--tab) + 28px + env(safe-area-inset-bottom)); outline: none; }
body.immersive main { padding-bottom: 32px; }
body.immersive #tabs { display: none; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 1.9rem; line-height: 1.15; letter-spacing: -.01em; }
h2 { font-size: 1.05rem; margin-bottom: 10px; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; padding: 0; }
:focus-visible { outline: 3px solid var(--acc); outline-offset: 2px; border-radius: 10px; }
small { color: var(--mut); font-size: .82em; }
.meta { color: var(--mut); font-size: .88rem; margin-top: 8px; }
.center { text-align: center; margin-top: 20px; }
.empty { text-align: center; color: var(--mut); padding: 40px 0; }
.hint { background: var(--soft); border-radius: 14px; padding: 10px 12px; font-size: .9rem; margin: 10px 0; }
.link { display: inline-block; margin-top: 8px; color: var(--acc); font-weight: 700; }

/* tab bar */
#tabs { position: fixed; inset: auto 0 0 0; display: flex; justify-content: center; background: color-mix(in srgb, var(--card) 92%, transparent); backdrop-filter: blur(14px); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); z-index: 5; }
#tabs a { flex: 1; max-width: 112px; min-height: var(--tab); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; font-size: .7rem; font-weight: 600; color: var(--mut); }
#tabs a span { font-size: 1.45rem; filter: grayscale(.9) opacity(.7); transition: transform .15s; }
#tabs a.on { color: var(--acc); }
#tabs a.on span { filter: none; transform: translateY(-1px) scale(1.08); }

/* generic blocks */
.hero { padding: 8px 2px 14px; }
.hero .sub { color: var(--mut); margin-top: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip { background: var(--card); border: 1px solid var(--line); border-radius: 99px; padding: 6px 12px; font-size: .88rem; font-weight: 600; }
.card { background: var(--card); border-radius: var(--r); box-shadow: var(--shadow); padding: 16px; margin-bottom: 14px; border: 1px solid var(--line); }
.sec { font-size: .95rem; text-transform: uppercase; letter-spacing: .06em; color: var(--mut); margin: 22px 2px 10px; }
.cta { display: flex; align-items: center; justify-content: center; width: 100%; min-height: 58px; border-radius: 18px; background: var(--acc); color: var(--acc-ink); font-weight: 800; font-size: 1.1rem; margin-top: 12px; padding: 0 20px; box-shadow: 0 6px 16px color-mix(in srgb, var(--acc) 35%, transparent); transition: transform .08s; }
.cta:active { transform: scale(.98); }
.cta.ghost { background: var(--card); color: var(--ink); border: 2px solid var(--line); box-shadow: none; }
.danger { margin-top: 18px; color: var(--no); font-weight: 700; padding: 10px; }

/* today */
.go { display: flex; align-items: center; gap: 16px; }
.gobody { flex: 1; min-width: 0; }
.gobody .cta { margin-top: 0; }
.done { font-size: 1.2rem; font-weight: 800; }
.ring { width: 112px; height: 112px; flex: none; }
.ring circle { fill: none; stroke-width: 11; }
.ring .trk { stroke: var(--soft); }
.ring .val { stroke: var(--acc); stroke-linecap: round; transform: rotate(-90deg); transform-origin: 60px 60px; transition: stroke-dasharray .6s; }
.ring text { text-anchor: middle; fill: var(--ink); }
.ring .rt { font-size: 22px; font-weight: 800; }
.ring .rs { font-size: 11px; fill: var(--mut); }
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 14px 6px; text-align: center; font-weight: 700; font-size: .85rem; display: flex; flex-direction: column; gap: 4px; min-height: 84px; justify-content: center; box-shadow: var(--shadow); }
.tile span { font-size: 1.7rem; }
.meter { height: 12px; border-radius: 99px; background: var(--soft); position: relative; overflow: hidden; }
.meter.sm { height: 7px; }
.meter i { position: absolute; inset: 0 auto 0 0; border-radius: 99px; }
.meter .seen { background: color-mix(in srgb, var(--sun) 55%, transparent); }
.meter .know { background: var(--ok); }
.row { display: flex; align-items: center; gap: 12px; padding: 8px 0; }
.row b { flex: 1; }
.row i { font-style: normal; color: var(--mut); font-size: .85rem; }
.bub { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-size: 1.4rem; background: color-mix(in srgb, var(--c) 18%, var(--card)); }

/* learn / practice tiles */
.pgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.ptile { position: relative; background: color-mix(in srgb, var(--c) 12%, var(--card)); border: 1px solid color-mix(in srgb, var(--c) 28%, var(--line)); border-radius: 20px; padding: 14px; display: flex; flex-direction: column; gap: 4px; min-height: 130px; box-shadow: var(--shadow); }
.ptile .pe { font-size: 2.1rem; line-height: 1; }
.ptile b { font-size: 1rem; line-height: 1.2; margin-top: 4px; }
.ptile em { position: absolute; top: 10px; right: 10px; font-style: normal; font-size: .68rem; font-weight: 800; background: var(--c); color: #fff; border-radius: 99px; padding: 2px 8px; }
.ptile small { margin-top: auto; }
.ptile .meter { margin-top: auto; }
.phead { --c: var(--acc); position: relative; background: linear-gradient(135deg, var(--c), color-mix(in srgb, var(--c) 60%, #000)); color: #fff; border-radius: 24px; padding: 54px 20px 20px; margin-bottom: 14px; }
.phead .pe { font-size: 2.4rem; display: block; margin-bottom: 4px; }
.phead p { opacity: .92; margin-top: 4px; font-size: .95rem; }
.back { position: absolute; top: 12px; left: 12px; width: 44px; height: 44px; border-radius: 50%; background: rgba(255, 255, 255, .22); display: grid; place-items: center; font-size: 1.8rem; line-height: 1; color: #fff; padding-bottom: 3px; }
.actions { margin-bottom: 14px; }
.actions .cta { margin-top: 8px; }
.gram p { margin-bottom: 8px; }
.ex { display: flex; align-items: center; gap: 10px; padding: 6px 0; border-top: 1px dashed var(--line); }
.ex span { font-weight: 700; flex: 1; }
.list { padding: 4px 6px; }
.irow { display: flex; align-items: center; gap: 12px; width: 100%; padding: 11px 8px; text-align: left; border-bottom: 1px solid var(--line); min-height: 58px; flex-wrap: wrap; }
.irow:last-child { border-bottom: 0; }
.irow .ie { font-size: 1.5rem; width: 34px; text-align: center; flex: none; }
.irow .it { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.irow .it small { display: block; }
.irow .it small.rsp { color: var(--acc); font-weight: 600; margin-top: 2px; }
.irow i { font-style: normal; color: var(--mut); font-size: 1.4rem; }
.dot { width: 10px; height: 10px; border-radius: 50%; flex: none; background: var(--line); }
.dot.l { background: var(--sun); } .dot.k { background: var(--ok); }
.bar-row { display: grid; grid-template-columns: 1fr 90px 40px; gap: 10px; align-items: center; padding: 7px 0; font-size: .92rem; }
.bar-row small { text-align: right; }

/* phrasebook */
.quick { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.quick a { background: var(--acc); color: var(--acc-ink); border-radius: 18px; padding: 12px; font-weight: 800; font-size: .95rem; display: flex; align-items: center; gap: 10px; min-height: 64px; line-height: 1.15; }
.quick a span { font-size: 1.6rem; }
.search { width: 100%; min-height: 54px; border: 2px solid var(--line); border-radius: 16px; background: var(--card); color: var(--ink); font: inherit; padding: 0 16px; margin-bottom: 4px; }
.search:focus { border-color: var(--acc); outline: none; }
.show { min-height: calc(100dvh - 60px); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 16px; position: relative; padding: 50px 6px 10px; }
.show .x { position: absolute; top: 0; right: 0; }
.show .se { font-size: 4rem; }
.show .big { font-size: clamp(2.2rem, 11vw, 3.6rem); font-weight: 800; line-height: 1.12; }
.show .sen { color: var(--mut); font-size: 1.1rem; }

/* speaker buttons */
.row2 { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin: 10px 0 4px; }
.spk { min-width: 44px; height: 44px; border-radius: 22px; background: var(--soft); display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 0 12px; font-size: 1.15rem; flex: none; }
.spk span { font-size: .85rem; font-weight: 700; }
.spk:active { background: var(--acc); }
.spk.mic { background: color-mix(in srgb, var(--acc) 18%, var(--card)); }
.bigspk { width: 116px; height: 116px; border-radius: 50%; background: var(--acc); color: var(--acc-ink); font-size: 3rem; display: grid; place-items: center; margin: 4px auto; box-shadow: 0 10px 24px color-mix(in srgb, var(--acc) 40%, transparent); }
.bigspk:active { transform: scale(.96); }

/* session */
.ses { --c: var(--acc); }
.sbar { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.x { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; font-size: 1.2rem; background: var(--soft); flex: none; }
.bar { flex: 1; height: 12px; background: var(--soft); border-radius: 99px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--c); border-radius: 99px; transition: width .35s; }
.tag { display: inline-block; background: var(--c); color: #fff; font-weight: 800; font-size: .72rem; letter-spacing: .08em; border-radius: 99px; padding: 3px 10px; margin-bottom: 8px; }
.q { text-align: center; padding: 22px 16px; border-top: 5px solid var(--c); }
.emo { font-size: 3rem; line-height: 1; margin-bottom: 8px; }
.emo.xl { font-size: 4.4rem; }
.es { font-size: clamp(1.7rem, 7vw, 2.2rem); font-weight: 800; line-height: 1.15; margin: 4px 0; }
.rsp { color: var(--c); font-weight: 700; letter-spacing: .02em; }
.en { color: var(--mut); font-size: 1.1rem; margin-top: 6px; }
.en.big, .big { font-size: 1.5rem; color: var(--ink); font-weight: 800; }
.note { background: var(--soft); border-radius: 12px; padding: 8px 12px; margin-top: 12px; font-size: .9rem; text-align: left; }
.ask { color: var(--mut); font-weight: 600; margin-top: 10px; }
.pron { color: var(--c); }
.opts { display: grid; gap: 10px; margin: 14px 0; }
.opts.nums { grid-template-columns: 1fr 1fr; }
.opts.nums .opt { font-size: 1.4rem; font-weight: 800; justify-content: center; }
.opt { display: flex; align-items: center; gap: 8px; width: 100%; min-height: 58px; padding: 10px 16px; text-align: left; border-radius: 16px; background: var(--card); border: 2px solid var(--line); font-weight: 600; font-size: 1.02rem; box-shadow: var(--shadow); flex-direction: column; justify-content: center; align-items: flex-start; }
.opt:active:not(:disabled) { border-color: var(--c, var(--acc)); }
.opt.right { background: var(--okbg); border-color: var(--ok); color: var(--ok); }
.opt.wrong { background: var(--nobg); border-color: var(--no); color: var(--no); animation: shake .35s; }
.opt:disabled { cursor: default; }
@keyframes shake { 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }
.fbk { border-radius: 14px; padding: 12px 14px; font-weight: 700; margin-top: 10px; }
.fbk.ok { background: var(--okbg); color: var(--ok); }
.fbk.no { background: var(--nobg); color: var(--no); }
.fbk b { color: var(--ink); } .fbk small { color: inherit; opacity: .8; }
.typein { width: 100%; min-height: 58px; border: 2px solid var(--line); border-radius: 16px; background: var(--card); color: var(--ink); font: inherit; font-size: 1.25rem; padding: 0 16px; margin-top: 14px; }
.typein:focus { border-color: var(--c); outline: none; }
.accents { display: grid; grid-template-columns: repeat(9, 1fr); gap: 4px; margin-top: 10px; }
.accents button { height: 44px; border-radius: 12px; background: var(--soft); font-weight: 800; font-size: 1.1rem; }
.micbtn { display: grid; place-items: center; width: 92px; height: 92px; margin: 14px auto 0; border-radius: 50%; background: var(--acc); color: var(--acc-ink); font-size: 2.4rem; box-shadow: 0 10px 24px color-mix(in srgb, var(--acc) 40%, transparent); }
.micbtn.live { animation: pulse 1s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 16px color-mix(in srgb, var(--acc) 22%, transparent); } }
.skip { display: block; margin: 14px auto 0; color: var(--mut); text-decoration: underline; padding: 8px; }
.ans { text-align: center; border-top: 5px solid var(--c); margin-top: 14px; }
.rate { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.rate button { min-height: 64px; border-radius: 16px; font-weight: 800; background: var(--card); border: 2px solid var(--line); display: flex; flex-direction: column; align-items: center; justify-content: center; }
.rate button:nth-child(1) { border-color: var(--no); color: var(--no); } .rate button:nth-child(2) { border-color: var(--ok); color: var(--ok); } .rate button:nth-child(3) { border-color: var(--acc); color: var(--acc); }
.end { text-align: center; padding-top: 24px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 16px 0; }
.stats div { background: var(--soft); border-radius: 14px; padding: 10px 4px; }
.stats b { display: block; font-size: 1.35rem; } .stats small { font-size: .72rem; }
.end .card { text-align: left; }

/* reading */
.line { display: flex; gap: 10px; align-items: flex-start; padding: 10px 0; border-bottom: 1px solid var(--line); }
.line:last-child { border-bottom: 0; }
.line p { font-size: 1.15rem; line-height: 1.5; }
.w { cursor: pointer; font: inherit; border-bottom: 2px dotted color-mix(in srgb, var(--acc) 60%, transparent); padding: 1px 0; }
.w:active { background: color-mix(in srgb, var(--sun) 40%, transparent); }
.tr { display: block; margin-top: 4px; cursor: pointer; }
.tr.hid { font-size: 0; user-select: none; }
.tr.hid::before { content: 'Tap for translation'; font-size: .78rem; color: var(--mut); background: var(--soft); border-radius: 8px; padding: 2px 10px; }
.gloss { position: sticky; bottom: calc(var(--tab) + 10px + env(safe-area-inset-bottom)); background: var(--ink); color: var(--bg); border-radius: 16px; padding: 12px 16px; margin: 12px 0; box-shadow: 0 8px 24px rgba(0, 0, 0, .25); font-size: .95rem; z-index: 2; }
.qz .opt { margin-top: 8px; }

/* chat */
.chat { display: flex; flex-direction: column; gap: 10px; }
.bub2 { max-width: 86%; border-radius: 18px; padding: 10px 14px; box-shadow: var(--shadow); }
.bub2 p { font-weight: 700; font-size: 1.05rem; }
.bub2.them { background: var(--card); border: 1px solid var(--line); border-bottom-left-radius: 4px; align-self: flex-start; }
.bub2.you { background: var(--acc); color: var(--acc-ink); border-bottom-right-radius: 4px; align-self: flex-end; }
.bub2.you small { color: inherit; opacity: .85; }
.bub2.live { outline: 2px solid var(--acc); }

/* settings */
.seg { display: flex; background: var(--soft); border-radius: 14px; padding: 4px; gap: 4px; }
.seg button { flex: 1; min-height: 44px; border-radius: 11px; font-weight: 700; font-size: .92rem; }
.seg button.on { background: var(--card); box-shadow: var(--shadow); color: var(--acc); }
.set label { display: block; font-weight: 700; margin: 16px 0 8px; font-size: .95rem; }
.set input[type=date] { width: 100%; min-height: 50px; border: 2px solid var(--line); border-radius: 14px; background: var(--card); color: var(--ink); font: inherit; padding: 0 12px; }
.filebtn { cursor: pointer; margin-top: 12px; }
.spark { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; height: 92px; align-items: end; margin-top: 8px; }
.spark div { display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; gap: 4px; }
.spark i { display: block; width: 100%; background: var(--acc); border-radius: 6px 6px 3px 3px; min-height: 4px; }

@media (min-width: 700px) { main { padding-top: 32px; } .pgrid { grid-template-columns: 1fr 1fr 1fr; } main { max-width: 640px; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

.cform { position: sticky; bottom: 0; background: var(--bg); padding: 8px 0 4px; margin-top: 12px; }
.cform .typein { margin-top: 0; }
.row2.l { justify-content: flex-start; margin: 6px 0 0; }
.hlp { display: block; margin-top: 6px; background: var(--soft); border-radius: 10px; padding: 8px 10px; }
.hlp[hidden] { display: none; }
canvas#wave { width: 100%; height: auto; border-radius: 12px; background: var(--soft); margin-top: 10px; }
.go .gobody b { font-weight: 700; }
.spk.mic.live { animation: pulse 1s infinite; }

.ph { display: block; width: 100%; height: 168px; object-fit: cover; border-radius: 14px; margin: 0 0 10px; background: var(--soft); }
.ph.big { height: 200px; }
.show .ph { max-width: 420px; height: 240px; }
.cred summary { cursor: pointer; font-weight: 600; padding: 6px 0; }
.cred p { margin: 8px 0; word-break: break-word; }
.cred a { color: var(--acc); }

.swatch { width: 100%; height: 120px; border-radius: 14px; margin: 0 0 10px; border: 1px solid var(--line); }
.swatch.big { height: 150px; }

.chip.on { background: var(--acc); color: var(--acc-ink); border-color: var(--acc); }
.chip.newchat { position: absolute; top: 12px; right: 12px; border: 0; background: rgba(255,255,255,.25); color: #fff; }
.syls { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 4px; }
.syl { border-radius: 10px; padding: 6px 10px; font-weight: 800; font-size: .95rem; }
.syl.g { background: var(--okbg); color: var(--ok); } .syl.a { background: #fff3d6; color: #8a5a00; } .syl.r { background: var(--nobg); color: var(--no); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .syl.a { background: #4a3a10; color: #ffd37a; } }
:root[data-theme="dark"] .syl.a { background: #4a3a10; color: #ffd37a; }
.dot.r { background: var(--no); }

.auth { text-align: center; padding-top: 8vh; }
.auth .sub { color: var(--mut); margin: 6px 0 18px; }
.auth .typein { text-align: left; }
.auth .cta { margin-top: 14px; }

.chk { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.chk input { width: 22px; height: 22px; }
.chk span { flex: 1; }

.mrow { align-items: flex-start; }
.mrow .it small { white-space: normal; }

.lvl { margin-bottom: 14px; }
.lvh { display: flex; align-items: baseline; gap: 8px; margin-bottom: 6px; }
.lvh b { font-size: 1.05rem; }
.lvh span { flex: 1; color: var(--mut); font-size: .88rem; }
.lvh i { font-style: normal; font-weight: 800; }
.lvl small { display: block; margin-top: 4px; }

.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: .8rem; color: var(--mut); margin: 0 4px 10px; }
.legend .dot { display: inline-block; margin-right: 4px; vertical-align: middle; }
.st { font-style: normal; font-size: .75rem; color: var(--mut); margin-left: auto; white-space: nowrap; }