:root{color:#123047;background:#f6fbff;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--blue: #1677c7;--blue-dark: #0d4f86;--sky: #dff1ff;--ink: #123047;--muted: #64778a;--line: #cbe2f5;--olive: #667a25;--success: #0b7f57;--danger: #bb3d43;--paper: #ffffff}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{min-width:320px;background:linear-gradient(180deg,rgba(22,119,199,.08),transparent 32%),repeating-linear-gradient(90deg,rgba(22,119,199,.06) 0 10px,transparent 10px 28px),#f6fbff}button{font:inherit}.app-shell{position:relative;width:min(100vw,430px);min-height:100vh;margin:0 auto;overflow:hidden;background:linear-gradient(180deg,#fff,#f6fbff);border-left:1px solid rgba(22,119,199,.08);border-right:1px solid rgba(22,119,199,.08)}.app-bg-mark{position:absolute;top:12px;right:-18px;color:#1677c70f;font-size:9rem;font-weight:900;pointer-events:none}.center-screen,.home-screen,.practice-screen,.profile-screen{position:relative;z-index:1;min-height:100vh;padding:max(24px,env(safe-area-inset-top)) 22px max(24px,env(safe-area-inset-bottom))}.center-screen{display:grid;place-items:center;align-content:center;gap:16px;text-align:center}.olive-loader{font-size:2.2rem;animation:bob 1.3s ease-in-out infinite}@keyframes bob{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.muted{color:var(--muted)}.error-box,.error-banner{width:100%;border:1px solid rgba(187,61,67,.22);border-radius:8px;padding:12px;color:var(--danger);background:#fff2f3;white-space:pre-wrap}.home-screen{display:flex;flex-direction:column;justify-content:space-between;gap:32px}.brand-block{position:relative;padding-top:42px}.profile-avatar-button{position:absolute;top:0;right:0;display:grid;place-items:center;width:54px;height:54px;padding:0;border:3px solid white;border-radius:50%;color:#fff;background:var(--blue);box-shadow:0 12px 24px #1677c73d;cursor:pointer;overflow:hidden}.profile-avatar-button img{width:100%;height:100%;object-fit:cover}.profile-avatar-button span{font-size:1.15rem;font-weight:900}.brand-kicker{display:inline-flex;align-items:center;gap:8px;min-height:32px;padding:7px 12px;border:1px solid var(--line);border-radius:999px;color:var(--blue-dark);background:var(--sky);font-size:.9rem;font-weight:700}.brand-block h1{margin:22px 0 6px;color:var(--blue-dark);font-size:clamp(3.2rem,15vw,4.5rem);line-height:.92;letter-spacing:0}.brand-block p{margin:0;color:var(--muted);font-size:1.05rem}.home-actions{display:grid;gap:14px}.primary-button,.secondary-button,.answer-button,.icon-button{min-height:48px;border:0;border-radius:8px;cursor:pointer}.primary-button{min-height:64px;color:#fff;background:var(--blue);box-shadow:0 14px 28px #1677c742;font-size:1.25rem;font-weight:850}.secondary-button{color:var(--blue-dark);background:var(--sky);border:1px solid var(--line);font-weight:800}.home-footer{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:.86rem}.top-bar{display:grid;grid-template-columns:48px 1fr 48px;align-items:center;min-height:48px;margin-bottom:24px}.top-bar span{color:var(--blue-dark);font-weight:850;text-align:center}.icon-button{color:var(--blue-dark);background:var(--sky);border:1px solid var(--line);font-size:1.3rem}.top-bar-mark{display:grid;place-items:center;width:42px;height:42px;margin-left:auto;border-radius:50%;color:#fff;background:var(--blue);font-weight:900}.practice-screen{display:flex;flex-direction:column}.direction-pill{align-self:center;min-height:34px;padding:7px 13px;border:1px solid var(--line);border-radius:999px;color:var(--blue-dark);background:var(--sky);font-size:.9rem;font-weight:800}.practice-card{display:grid;place-items:center;min-height:180px;margin:22px 0;padding:26px 18px;border:1px solid rgba(22,119,199,.16);border-radius:8px;background:linear-gradient(135deg,rgba(22,119,199,.08),transparent 45%),var(--paper);box-shadow:0 16px 34px #12304714;text-align:center}.loading-card{align-content:center;color:var(--muted)}.prompt{max-width:100%;color:var(--ink);font-size:clamp(2.2rem,13vw,4rem);font-weight:900;line-height:1.05;overflow-wrap:anywhere}.answers{display:grid;gap:12px}.answer-button{width:100%;min-height:58px;padding:14px 16px;border:1px solid var(--line);color:var(--ink);background:#fff;font-size:1.04rem;font-weight:800;text-align:center;box-shadow:0 8px 18px #1230470f;overflow-wrap:anywhere}.answer-button:disabled{cursor:default;opacity:.92}.answer-correct{border-color:#0b7f5759;color:var(--success);background:#ecfff6}.answer-wrong{border-color:#bb3d4359;color:var(--danger);background:#fff1f2}.feedback{display:grid;gap:4px;min-height:58px;margin-top:16px;padding:12px 14px;border-radius:8px}.feedback span{color:var(--muted)}.feedback-correct{background:#ecfff6;color:var(--success)}.feedback-wrong{background:#fff1f2;color:var(--danger)}.profile-loading{display:grid;place-items:center;gap:10px;padding:48px 0;color:var(--muted)}.profile-hero{padding:20px;border:1px solid rgba(22,119,199,.16);border-radius:8px;background:var(--paper);box-shadow:0 14px 32px #12304712}.profile-name{color:var(--blue-dark);font-weight:850}.profile-hero h2{margin:8px 0 0;color:var(--blue-dark);font-size:3.6rem;line-height:1}.profile-hero p{margin:6px 0 0;color:var(--muted)}.stat-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}.stat-row>div{display:grid;gap:4px;min-height:84px;padding:14px;border:1px solid var(--line);border-radius:8px;background:var(--sky)}.stat-row strong{color:var(--blue-dark);font-size:1.45rem}.stat-row span,.bucket-label span,.bucket-count span{color:var(--muted);font-size:.86rem}.bucket-list{display:grid;gap:10px}.bucket-item{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:72px;padding:12px;border:1px solid rgba(22,119,199,.14);border-radius:8px;background:#fff}.bucket-label{display:flex;align-items:center;gap:12px;min-width:0}.bucket-label div{display:grid;gap:2px}.bucket-emoji{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:#eef7ff;font-size:1.22rem}.bucket-count{display:grid;justify-items:end;gap:2px}.bucket-count strong{color:var(--blue-dark);font-size:1.25rem}.profile-note{margin:18px 0 0;color:var(--olive);font-weight:750;text-align:center}