*{box-sizing:border-box}
html{background:#f6f7fb;color:#172033;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Arial,sans-serif;background:linear-gradient(180deg,#eef7f5 0,#f6f7fb 240px,#f6f7fb 100%);color:#172033}
.box{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:18px 14px}
.panel{width:100%;max-width:420px;background:#fff;border:1px solid #e4e8f0;border-radius:8px;padding:18px;box-shadow:0 18px 42px rgba(23,32,51,.09)}
h1{margin:0;font-size:28px;line-height:1.08;font-weight:850;letter-spacing:0;color:#172033}
.kicker{margin:6px 0 18px;color:#667085;font-size:13px}

/* --- Lockup značky (loyaltycards-brand/snippets/logo.css) --------------------
   Symbol + wordmark + endorsement. Bez webfontu: systémový stack, ExtraBold. */
.brand-lockup{display:flex;align-items:center;gap:13px}
.brand-mark{display:block;width:44px;height:44px;flex-shrink:0}
.brand-word{font-size:26px;line-height:1;font-weight:800;letter-spacing:-.028em}
.brand-word span:first-child{color:#16202F}
.brand-word span:last-child{color:#0F766E}
.brand-by{margin-top:5px;font-size:10px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:#9AA3B2}
.brand-lockup.is-stacked{flex-direction:column;gap:10px;text-align:center}
/* Tmavý režim ze snippetu ZÁMĚRNĚ vynechán: login má natvrdo světlé pozadí
   (html{background:#f6f7fb} + bílý .panel), takže Ink 50 wordmark by byl
   bílý na bílém. Vrátit až s celoplošným dark režimem aplikace. */
.input{width:100%;min-height:46px;padding:11px 12px;margin:0 0 10px;border-radius:8px;border:1px solid #ccd4e0;background:#fff;color:#172033;font-size:16px;outline:none}
.input:focus{border-color:#0f766e;box-shadow:0 0 0 3px rgba(15,118,110,.14)}
.remember{display:flex;align-items:center;gap:8px;margin:2px 0 14px;color:#344054;font-size:14px}
.btn{width:100%;min-height:46px;border-radius:8px;border:0;background:#0f766e;color:#fff;font-weight:750;font-size:15px;box-shadow:0 8px 18px rgba(15,118,110,.22)}
.err{margin:0 0 12px;padding:10px 11px;border-radius:8px;background:#fff1f3;border:1px solid #fecdd3;color:#b42318;font-size:13px;font-weight:750}