*{box-sizing:border-box}
:root{--brand:#2f6bff;--brand2:#5b3df5;--ink:#0f1830;--mut:#5b6a8c;--line:#e3e9f6}
html,body{margin:0;padding:0;min-height:100vh;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink)}
body{background:linear-gradient(160deg,#eef4ff 0%,#d6e2ff 45%,#c2d3ff 100%);
 background-attachment:fixed}
[hidden]{display:none !important}

.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{background:#fff;width:100%;max-width:430px;border-radius:22px;
 box-shadow:0 30px 70px -20px rgba(30,60,150,.45);padding:34px 34px 22px;text-align:center;
 border:1px solid rgba(255,255,255,.8)}

/* marca */
.login-logo{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:16px;
 background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;margin-bottom:12px;font-size:30px;
 box-shadow:0 12px 26px -8px rgba(47,73,255,.6)}
.login-logo svg{display:none}
.login-card h1{font-size:26px;font-weight:850;letter-spacing:-.5px;margin:0 0 4px;color:var(--ink)}
.subtitle{color:var(--mut);font-size:14.5px;margin:0 0 20px}

/* abas Entrar / Criar conta */
.tabs{display:flex;gap:4px;background:#eef2fb;border:1px solid var(--line);border-radius:13px;padding:4px;margin-bottom:20px}
.tab{flex:1;border:0;background:transparent;color:var(--mut);font-weight:700;font-size:14px;padding:10px 8px;border-radius:10px;cursor:pointer;transition:all .15s}
.tab.on{background:#fff;color:var(--ink);box-shadow:0 3px 10px -4px rgba(30,60,150,.35)}
.tab:hover:not(.on){color:var(--ink)}

form{display:flex;flex-direction:column;gap:14px;text-align:left}
label{display:flex;flex-direction:column;gap:6px}
label span{font-size:13px;color:#38456a;font-weight:600}
input[type="text"],input[type="password"]{width:100%;padding:13px 13px;font-size:15px;border:1.5px solid var(--line);
 border-radius:11px;outline:none;transition:border-color .15s,box-shadow .15s;background:#fbfcff}
input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,107,255,.14);background:#fff}

button[type="submit"]{width:100%;padding:14px;font-size:15.5px;font-weight:800;color:#fff;border:0;border-radius:12px;cursor:pointer;margin-top:4px;
 background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 12px 26px -8px rgba(47,73,255,.55);transition:transform .1s,box-shadow .2s}
button[type="submit"]:hover:not(:disabled){box-shadow:0 16px 32px -8px rgba(47,73,255,.65);transform:translateY(-1px)}
button:disabled{opacity:.6;cursor:not-allowed}

.hint-signup{margin:-2px 0 0;font-size:12.5px;color:var(--mut);text-align:center}
.error-msg{margin:4px 0 0;padding:10px 12px;background:#fef2f2;color:#991b1b;border:1px solid #fecaca;border-radius:9px;font-size:13px;text-align:center}
.alt-line{margin-top:16px;text-align:center;font-size:13.5px;color:var(--mut)}
.alt-line a{color:var(--brand);font-weight:700;text-decoration:none}
.alt-line a:hover{text-decoration:underline}
.login-footer{margin-top:20px;padding-top:14px;border-top:1px solid #eef1f8;color:#9aa6c2;font-size:12px}