/* LinguaAI — общие стили (дизайн-токены из макета) */
:root{
  --bg:#f5f4f1; --ink:#1c1c1e; --muted:#6b6b70; --muted2:#9a9a95;
  --line:#ececec; --line2:#e2e2dd; --indigo:#4f46e5; --indigo-soft:#eef2ff;
  --green:#059669; --amber:#c2660c; --rose:#e11d48; --card:#ffffff;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:'Manrope',system-ui,-apple-system,sans-serif;
  background:var(--bg); color:var(--ink);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:#dcdcd6;border-radius:8px;border:3px solid var(--bg);}
input,textarea,button,select{font-family:inherit;}
textarea::placeholder,input::placeholder{color:#a5a5a0;}
@keyframes spin{to{transform:rotate(360deg);}}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}
@keyframes pulseSk{0%,100%{opacity:.45;}50%{opacity:.85;}}
@keyframes blink{50%{opacity:0;}}
.serif{font-family:'Newsreader',serif;}
.caret{display:inline-block;width:2px;height:58%;background:var(--indigo);border-radius:2px;animation:blink 1.05s steps(1) infinite;}

/* кнопки */
.btn{cursor:pointer;border:none;border-radius:12px;padding:12px 20px;font-weight:700;font-size:15px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .12s ease,opacity .12s ease,box-shadow .12s ease;}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--indigo);color:#fff;box-shadow:0 6px 20px -8px rgba(79,70,229,.6);}
.btn-primary:hover{opacity:.93;}
.btn-soft{background:var(--indigo-soft);color:var(--indigo);}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink);}
.btn-dark{background:var(--ink);color:#fff;}
.btn-block{width:100%;}

/* поля ввода */
.field{display:block;}
.field label{font-size:13px;font-weight:700;color:#8a8a85;display:block;margin-bottom:7px;}
.input{width:100%;border:1px solid var(--line2);border-radius:12px;padding:12px 14px;font-size:15px;outline:none;background:#fff;transition:border-color .15s ease,box-shadow .15s ease;}
.input:focus{border-color:var(--indigo);box-shadow:0 0 0 3px rgba(79,70,229,.12);}

/* карточки авторизации/лендинга */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;}
.auth-card{width:100%;max-width:420px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px;box-shadow:0 20px 60px -28px rgba(0,0,0,.28);animation:fadeUp .4s ease;}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;}
.brand-badge{width:38px;height:38px;border-radius:11px;background:var(--indigo);display:flex;align-items:center;justify-content:center;}
.brand-badge i{font-size:21px;color:#fff;}
.brand-name{font-weight:800;font-size:18px;letter-spacing:-0.3px;}
.brand-name span{color:var(--indigo);}
.error-box{background:#fff5f6;border:1px solid #fbdce0;color:var(--rose);border-radius:11px;padding:11px 14px;font-size:14px;font-weight:600;margin-bottom:14px;display:none;}
.error-box.show{display:block;animation:fadeUp .25s ease;}
.muted{color:var(--muted);}