:root { color-scheme: light; --bg: #faf7f2; --card: #ffffff; --ink: #211c18; --muted: #6b625b; --sep: #e8e1d8; --tint: #a63f24; --bad: #c4161c; }
* { box-sizing: border-box; margin: 0; }
html, body { height: 100%; }
body { background: var(--bg); color: var(--ink); font: 16px/1.45 Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
.auth { width: 100%; max-width: 440px; margin: 0 auto; padding: calc(env(safe-area-inset-top, 0px) + 28px) 16px 32px; display: grid; gap: 18px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; letter-spacing: -0.03em; }
.brand img { border-radius: 8px; }
.brand small { font-size: 13px; font-weight: 600; color: var(--muted); letter-spacing: 0; }
h1 { font-size: 30px; letter-spacing: -0.03em; line-height: 1.15; }
form { display: grid; gap: 14px; }
.group { background: var(--card); border: 1px solid var(--sep); border-radius: 16px; overflow: hidden; }
label { display: block; }
label + label { border-top: 1px solid var(--sep); }
label span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
input { width: 100%; border: 0; background: none; font: inherit; color: var(--ink); padding: 15px 16px; outline: none; }
label:focus-within { box-shadow: inset 0 0 0 2px var(--tint); }
button { min-height: 50px; border: 0; border-radius: 14px; background: var(--tint); color: #fff; font: inherit; font-weight: 600; cursor: pointer; -webkit-tap-highlight-color: transparent; }
button:disabled { opacity: .6; }
button:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.error { color: var(--bad); font-size: 14.5px; padding: 0 4px; }
@media (min-width: 900px) {
  .auth { margin-top: 9vh; max-width: 460px; padding: 32px 28px 28px; background: var(--card); border-radius: 22px; box-shadow: 0 0 0 0.5px var(--sep), 0 18px 48px rgb(0 0 0 / 0.08); }
  .group { background: var(--bg); }
  button { min-height: 46px; }
}