:root{font-family:Arial,Helvetica,sans-serif;color:#20251d;background:#f5f5ed;font-synthesis:none;color-scheme:light;--muted:#707569;--green:#d6f27c}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;padding:0 max(24px,env(safe-area-inset-right)) 0 max(24px,env(safe-area-inset-left))}
button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}button:focus-visible,a:focus-visible{outline:3px solid #5a7319;outline-offset:5px}[hidden]{display:none!important}
.header{width:100%;max-width:1170px;margin:0 auto;padding:28px 0;display:flex;justify-content:center}
.brand{display:flex;align-items:center;text-decoration:none;color:inherit;font-size:30px;font-weight:750;letter-spacing:-1.6px}.brand-light{font-weight:400}.brand-dot{color:#769c30}
main{flex:1;width:100%;max-width:1170px;margin:0 auto;display:grid;align-items:center}
.login{width:100%;max-width:420px;margin:0 auto;padding:28px 0 48px}
.login-art{display:block;width:285px;max-width:100%;height:auto;margin:0 auto 24px;mix-blend-mode:multiply}
.entry-card{border:1px solid #e1e3d8;background:#fff;border-radius:24px;padding:36px;box-shadow:0 12px 36px #343a1508}
.login h1{font-size:32px;line-height:1.15;letter-spacing:-1px;font-weight:600;margin:0 0 12px}
.card-copy{font-size:15px;color:var(--muted);line-height:1.6;margin:0 0 32px}
label{display:block;font-size:14px;font-weight:600;margin-bottom:10px}
.input-wrap{display:flex;border:1px solid #d7dbcf;border-radius:11px;background:#fafbf7;transition:border-color .15s}.input-wrap:focus-within{outline:2px solid #8ca849;outline-offset:2px;border-color:#8ca849}
input{width:100%;min-width:0;min-height:56px;border:0;border-radius:11px;background:transparent;padding:16px 12px 16px 16px;font-size:16px;outline:none;color:#20251d}input::placeholder{color:#93988b}
.reveal{border:0;background:transparent;font-size:12px;color:#5f6c49;min-height:48px;min-width:72px;padding:0 12px}
.input-help{font-size:12px;color:var(--muted);margin:12px 0 26px;line-height:1.6}
.primary{min-height:56px;display:flex;align-items:center;justify-content:center;width:100%;background:var(--green);border:1px solid #cde875;border-radius:11px;font-weight:600;font-size:15px;padding:14px 19px;color:#253315}.primary:hover{background:#cbe86c}
.footer{width:100%;margin:0 auto;text-align:center;padding:22px 0 max(22px,env(safe-area-inset-bottom));color:var(--muted);font-size:12px;line-height:1.6}
.error{font-size:13px;color:#a63828;line-height:1.6;margin:0 0 16px}.loading{padding:60px 0;text-align:center;color:var(--muted)}
.home{width:100%;max-width:650px;padding:65px 0;margin:auto}.eyebrow,.pill{display:inline-flex;align-items:center;gap:10px;font-size:10px;font-weight:600;letter-spacing:1.4px}.small-star{color:#748e3c;font-size:25px;line-height:1}.home h1{font-size:clamp(48px,6vw,72px);line-height:1.02;letter-spacing:-4px;font-weight:600;margin:29px 0 26px;overflow-wrap:anywhere}.classroom-name{color:#5c7629}.intro-copy{font-size:16px;line-height:1.7;color:#6a7063;margin:0}.welcome-card{border:1px solid #e0e3d4;background:white;border-radius:20px;padding:26px;margin:30px 0 22px}.pill{gap:7px;letter-spacing:1px;font-size:8px}.status-dot{width:6px;height:6px;border-radius:50%;background:#7b983a}h2{font-size:27px;font-weight:600;letter-spacing:-1px;margin:0 0 12px}.welcome-card h2{margin-top:20px}.welcome-card p{font-size:15px;color:var(--muted);line-height:1.7;margin-bottom:0}.secondary{background:transparent;border:1px solid #c4ccaf;border-radius:10px;padding:15px 18px;min-height:50px;font-size:14px;color:#465531}.secondary span{margin-left:20px}.home h1:focus{outline:none}
@media(max-width:650px){body{padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}.header{padding:24px 0}.brand{font-size:28px}.login{padding:8px 0 28px}.login-art{width:240px;margin-bottom:20px}.entry-card{padding:28px 24px;border-radius:20px}.login h1{font-size:30px}.card-copy{font-size:14px;margin-bottom:28px}.home{padding:40px 0}.home h1{letter-spacing:-2px}.intro-copy{font-size:14px}h2{font-size:25px}}
@media(max-width:360px){.entry-card{padding:26px 20px}.login h1{font-size:28px}.input-help{font-size:11px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
/* Общая шапка и языки доступны на каждом экране. */
.header{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}
.brand{grid-column:2}.languages{grid-column:3;justify-self:end;display:flex;gap:2px;align-items:center}
.languages button{border:0;background:transparent;color:#5f6c49;min-width:44px;min-height:44px;border-radius:10px;font-size:13px;font-weight:600;padding:8px}
.languages button[aria-pressed=true]{background:var(--green);color:#253315}
#nickname-title{margin-bottom:28px}.nickname-logout{margin-top:18px;width:100%}
@media(max-width:650px){.header{display:flex;justify-content:space-between;gap:8px}.languages{flex-shrink:0}}

/* На узком телефоне четыре кнопки остаются справа, каждая не меньше 44 px. */
@media(max-width:360px){.header{flex-wrap:wrap}.languages{margin-left:auto}}