:root {
  --bg:            #FFFFFF;
  --surface1:      #F8F8F8;
  --border:        #E6E7E8;
  --border-strong: #939598;
  --text:          #000000;
  --text-sec:      #939598;
  --accent:        #D80B2A;
  --accent-dim:    rgba(216,11,42,0.08);
  --error-bg:      #FBE3E6;
  --error-fg:      #8A0A1E;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg:            #0a0a0a;
    --surface1:      #111111;
    --border:        #2a2a2a;
    --border-strong: #444444;
    --text:          #F0EFEB;
    --text-sec:      #888888;
    --accent:        #D80B2A;
    --accent-dim:    rgba(216,11,42,0.12);
    --error-bg:      #2a1113;
    --error-fg:      #FF8B9A;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
  color: var(--text);
  font-family: 'TT Commons', 'Trade Gothic Next', 'Helvetica Neue', Arial, sans-serif;
}
main {
  width: min(400px, calc(100% - 40px));
  padding: 32px;
  border: 1px solid var(--border);
  background: var(--surface1);
  position: relative;
}
main::before {
  content: "";
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
}
.label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}
h1 {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}
p { color: var(--text-sec); font-size: 14px; line-height: 1.75; margin: 0; }
label.field {
  display: block;
  margin: 24px 0 8px;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-sec);
}
input, button { box-sizing: border-box; width: 100%; min-height: 46px; font: inherit; font-size: 14px; }
input { border: 1px solid var(--border-strong); background: var(--bg); color: var(--text); padding: 10px 12px; }
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button { margin-top: 20px; border: 0; background: var(--accent); color: #FFFFFF; font-weight: 700; cursor: pointer; }
button:hover { opacity: 0.92; }
.error { padding: 10px 12px; background: var(--error-bg); color: var(--error-fg); font-size: 14px; margin-top: 16px; }