:root{--bg:#f2f2f7;--surface:#fff;--surface-2:#f7f7fa;--glass:#ffffffb8;--text:#111114;--text-2:#6e6e76;--text-3:#a1a1aa;--hairline:#3c3c4324;--accent:#4f46e5;--accent-soft:#4f46e51a;--on-accent:#fff;--ok:#16a34a;--ok-soft:#16a34a1a;--bad:#e11d48;--bad-soft:#e11d4817;--gold:#f59e0b;--fire:#f97316;--ice:#38bdf8;--shaky:#f59e0b;--new:#d4d4d8;--ring-a:#6366f1;--ring-b:#ec4899;--ring-track:#6366f11f;--shadow:0 1px 2px #0000000a, 0 8px 24px #0000000f;--shadow-lg:0 2px 6px #0000000a, 0 24px 48px #1111141f;--radius:22px;--radius-sm:14px;--ease:cubic-bezier(.2, .8, .2, 1);--spring:cubic-bezier(.34, 1.56, .64, 1);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#000;--surface:#1c1c1e;--surface-2:#2c2c2e;--glass:#1c1c1eb8;--text:#f5f5f7;--text-2:#98989f;--text-3:#636366;--hairline:#54545880;--accent:#818cf8;--accent-soft:#818cf829;--on-accent:#0b0b12;--ok:#4ade80;--ok-soft:#4ade8024;--bad:#fb7185;--bad-soft:#fb718524;--new:#3f3f46;--ring-track:#818cf829;--shadow:none;--shadow-lg:0 24px 48px #00000080;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#000;--surface:#1c1c1e;--surface-2:#2c2c2e;--glass:#1c1c1eb8;--text:#f5f5f7;--text-2:#98989f;--text-3:#636366;--hairline:#54545880;--accent:#818cf8;--accent-soft:#818cf829;--on-accent:#0b0b12;--ok:#4ade80;--ok-soft:#4ade8024;--bad:#fb7185;--bad-soft:#fb718524;--new:#3f3f46;--ring-track:#818cf829;--shadow:none;--shadow-lg:0 24px 48px #00000080;--lightningcss-light: 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.lt-name{font-size:14px;font-weight:600;line-height:1.2}.level-tile .lt-soon{color:var(--text-3);font-size:12px}.session{flex-direction:column;gap:22px;min-height:calc(100dvh - 160px);display:flex}.session-top{align-items:center;gap:14px;display:flex}.session-progress{background:var(--surface-2);border-radius:8px;flex:1;height:8px;overflow:hidden}.session-progress>i{border-radius:inherit;background:linear-gradient(90deg, var(--ring-a), var(--ring-b));height:100%;transition:width .5s var(--ease);display:block}.session-count{color:var(--text-2);font-variant-numeric:tabular-nums;text-align:right;min-width:48px;font-size:15px;font-weight:600}.extra-tag{background:var(--bad-soft);color:var(--bad);border-radius:999px;align-items:center;gap:6px;padding:4px 10px;font-size:13px;font-weight:700;display:inline-flex}.flip{perspective:1200px;position:relative}.flip-inner{min-height:210px;transform-style:preserve-3d;transition:transform .7s var(--spring);position:relative}.flip.flipped .flip-inner{transform:rotateY(180deg)}.flip-face{background:var(--surface);box-shadow:var(--shadow-lg);backface-visibility:hidden;text-align:center;border-radius:28px;flex-direction:column;justify-content:center;align-items:center;gap:10px;padding:28px 22px;display:flex;position:absolute;inset:0}.flip-back{transform:rotateY(180deg)}.flip-back.ok{background:linear-gradient(160deg, var(--surface), var(--ok-soft))}.flip-back.bad{background:linear-gradient(160deg, var(--surface), var(--bad-soft))}.face-lang{letter-spacing:.08em;text-transform:uppercase;color:var(--text-3);font-size:12px;font-weight:700}.face-word{letter-spacing:-.03em;overflow-wrap:anywhere;font-size:34px;font-weight:700;line-height:1.15}.face-sub{color:var(--text-2);font-size:15px}.face-speak{position:absolute;top:14px;right:14px}.flip.shake{animation:shake .45s var(--ease)}.combo-chip{background:linear-gradient(135deg, var(--fire), var(--ring-b));color:#fff;letter-spacing:.01em;animation:pop .45s var(--spring);z-index:2;white-space:nowrap;border-radius:999px;padding:6px 14px;font-size:14px;font-weight:800;position:absolute;top:-14px;left:50%;transform:translate(-50%);box-shadow:0 6px 16px #f9731659}.xp-float{z-index:3;color:var(--accent);animation:float-up 1.1s var(--ease) forwards;pointer-events:none;font-size:20px;font-weight:800;position:absolute;top:20px;right:24px}.options{flex-direction:column;gap:12px;display:flex}.option{background:var(--surface);min-height:62px;box-shadow:var(--shadow);text-align:center;cursor:pointer;transition:transform .15s var(--ease), border-color .2s, background .2s, opacity .3s;animation:rise .4s var(--ease) both;border:2px solid #0000;border-radius:18px;padding:18px 20px;font-size:19px;font-weight:600;position:relative}.option:nth-child(2){animation-delay:50ms}.option:nth-child(3){animation-delay:.1s}.option:active:not(:disabled){transform:scale(.98)}.option:disabled{cursor:default}.option.right{border-color:var(--ok);background:var(--ok-soft);color:var(--ok)}.option.wrong{border-color:var(--bad);background:var(--bad-soft);color:var(--bad)}.session-footer{flex-direction:column;gap:10px;margin-top:auto;display:flex}.summary{text-align:center;flex-direction:column;align-items:center;gap:22px;padding-top:12px;display:flex}.summary-emoji{animation:pop .6s var(--spring);font-size:64px}.summary-stats{grid-template-columns:repeat(3,1fr);gap:10px;width:100%;display:grid}.summary-stat{background:var(--surface);box-shadow:var(--shadow);border-radius:18px;padding:14px 8px}.summary-stat strong{letter-spacing:-.02em;font-size:24px;font-weight:800;display:block}.summary-stat span{color:var(--text-2);font-size:13px}.summary-stat.xp strong{background:linear-gradient(135deg, var(--ring-a), var(--ring-b));color:#0000;-webkit-background-clip:text;background-clip:text}.badge-new{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.badge-new .badge{animation:pop .6s var(--spring) both}.confetti{pointer-events:none;z-index:50;position:fixed;inset:0;overflow:hidden}.confetti i{border-radius:2px;animation:linear forwards confetti-fall;position:absolute;top:0}.level-card{align-items:center;gap:16px;display:flex}.level-badge{background:linear-gradient(135deg, var(--ring-a), var(--ring-b));color:#fff;border-radius:20px;flex-shrink:0;place-items:center;width:64px;height:64px;font-size:26px;font-weight:800;display:grid;box-shadow:0 8px 20px #6366f14d}.level-card .grow{flex:1;min-width:0}.week-chart{flex-direction:column;gap:8px;margin-top:14px;display:flex}.week-bars{grid-template-columns:repeat(7,1fr);align-items:end;gap:10px;height:120px;display:grid;position:relative}.week-goal{border-top:2px dashed var(--hairline);position:absolute;left:0;right:0}.week-col{align-items:flex-end;height:100%;display:flex}.week-bar{background:var(--ring-track);width:100%;transition:height .8s var(--ease);border-radius:8px 8px 4px 4px}.week-bar.reached{background:linear-gradient(180deg, var(--ring-b), var(--ring-a))}.week-bar.frozen{background:var(--ice);opacity:.35;height:100%!important}.week-bar.today{box-shadow:0 0 0 2px var(--surface), 0 0 0 4px var(--accent-soft)}.week-labels{text-align:center;color:var(--text-3);grid-template-columns:repeat(7,1fr);gap:10px;font-size:13px;font-weight:600;display:grid}.week-labels .today{color:var(--accent)}.badge-grid{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.badge{background:var(--surface);box-shadow:var(--shadow);text-align:center;border-radius:18px;flex-direction:column;align-items:center;gap:6px;padding:16px 6px 12px;display:flex}.badge-icon{font-size:34px;line-height:1}.badge-name{font-size:12px;font-weight:600;line-height:1.25}.badge.locked .badge-icon{filter:grayscale();opacity:.25}.badge.locked .badge-name{color:var(--text-3)}.search{background:var(--surface);box-shadow:var(--shadow);border-radius:12px;align-items:center;gap:8px;padding:0 12px;display:flex}.search svg{width:18px;height:18px;color:var(--text-3);flex-shrink:0}.search input{background:0 0;padding:12px 0}.search input:focus{background:0 0;border-color:#0000}.row-actions{flex-shrink:0;gap:6px;display:flex}.input-row{align-items:center;gap:8px;display:flex}.chips{flex-wrap:wrap;gap:8px;display:flex}.chip{background:var(--accent-soft);color:var(--accent);cursor:pointer;animation:pop .35s var(--spring) both;border:none;border-radius:999px;padding:8px 14px;font-size:15px;font-weight:600}.fab-row{gap:10px;display:flex}.error{color:var(--bad);font-size:15px}.notice{background:var(--accent-soft);color:var(--text);border-radius:var(--radius-sm);padding:12px 14px;font-size:15px}.toast{left:50%;top:calc(env(safe-area-inset-top) + 12px);background:var(--glass);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);max-width:calc(100% - 32px);box-shadow:var(--shadow-lg);animation:rise .4s var(--spring);z-index:60;border-radius:999px;padding:12px 18px;font-size:15px;font-weight:600;position:fixed;transform:translate(-50%)}.auth{max-width:420px;min-height:100dvh;padding:calc(env(safe-area-inset-top) + 56px) 20px 32px;animation:rise .5s var(--ease);flex-direction:column;gap:28px;margin:0 auto;display:flex}.auth-hero{text-align:center;flex-direction:column;align-items:center;gap:14px;display:flex}.auth-logo{width:84px;height:84px;box-shadow:var(--shadow-lg);border-radius:22px}.auth-hero p{color:var(--text-2);font-size:17px}.auth .card{flex-direction:column;gap:16px;padding:24px 20px;display:flex}.divider{color:var(--text-3);align-items:center;gap:12px;font-size:14px;display:flex}.divider:before,.divider:after{content:"";border-top:1px solid var(--hairline);flex:1}.source-grid{grid-template-columns:1fr;gap:12px;display:grid}.source{text-align:left;border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);cursor:pointer;transition:transform .15s var(--ease);border:none;grid-template-rows:auto auto;grid-template-columns:52px 1fr;align-items:center;column-gap:14px;padding:18px;display:grid}.source:active{transform:scale(.98)}.source-icon{background:var(--accent-soft);border-radius:16px;grid-row:1/3;place-items:center;width:52px;height:52px;font-size:26px;display:grid}.source strong{font-size:17px}.source span:last-child{color:var(--text-2);font-size:14px}textarea{resize:vertical;border-radius:var(--radius-sm);background:var(--surface-2);width:100%;min-height:180px;font:inherit;color:inherit;border:1px solid #0000;padding:14px 16px;font-size:16px}textarea:focus{border-color:var(--accent);background:var(--surface);outline:none}.import-row{gap:10px;transition:opacity 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