:root {
  color-scheme: dark;
  --ink: #0b0a08;
  --paper: #f5f1e9;
  --sand: #d9d1c3;
  --red: #ff5d3d;
  --red-deep: #e33f21;
  --line: rgba(245, 241, 233, .22);
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --serif: "Playfair Display", Georgia, serif;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body.duel-login-page {
  margin: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(255, 93, 61, .18), transparent 33rem),
    radial-gradient(circle at 92% 88%, rgba(255, 93, 61, .09), transparent 30rem),
    var(--ink);
  color: var(--paper);
  font-family: var(--mono);
}

.duel-login-shell {
  width: min(100% - 2rem, 70rem);
  min-height: 100vh;
  margin: 0 auto;
  padding: 2rem 0 1.5rem;
  display: grid;
  align-content: center;
  gap: 1.5rem;
}

.duel-login-back {
  color: var(--paper);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  width: fit-content;
  opacity: .82;
}
.duel-login-back:hover { color: var(--red); opacity: 1; }

.duel-login-card {
  position: relative;
  overflow: hidden;
  width: min(100%, 34rem);
  padding: clamp(2rem, 7vw, 4.5rem);
  border: 1px solid var(--line);
  background: rgba(18, 17, 14, .92);
  box-shadow: 18px 18px 0 rgba(255, 93, 61, .72);
}
.duel-login-card::before,
.duel-login-card::after {
  position: absolute;
  content: "";
  pointer-events: none;
}
.duel-login-card::before {
  top: 0;
  right: 0;
  width: 9rem;
  height: 9rem;
  border-left: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transform: translate(50%, -50%) rotate(45deg);
}
.duel-login-card::after {
  inset: .55rem;
  border: 1px solid rgba(245, 241, 233, .08);
}
.duel-login-card > * { position: relative; z-index: 1; }

.duel-login-seal {
  display: grid;
  width: 3.15rem;
  height: 3.15rem;
  place-items: center;
  margin-bottom: 1.35rem;
  border: 1px solid var(--red);
  border-radius: 50%;
  color: var(--red);
  font-size: 1.35rem;
}
.duel-login-kicker {
  margin: 0 0 .9rem;
  color: var(--red);
  font-size: .66rem;
  letter-spacing: .11em;
}
.duel-login-card h1 {
  margin: 0;
  color: var(--paper);
  font-family: var(--serif);
  font-size: clamp(3rem, 9vw, 5.4rem);
  font-weight: 800;
  letter-spacing: -.08em;
  line-height: .84;
}
.duel-login-card h1 em { color: var(--red); font-weight: 500; }
.duel-login-copy {
  max-width: 26rem;
  margin: 1.55rem 0 2rem;
  color: var(--sand);
  font-size: .78rem;
  line-height: 1.72;
}

.duel-login-error {
  margin: 0 0 1.25rem;
  padding: .85rem 1rem;
  border-left: 3px solid var(--red);
  background: rgba(255, 93, 61, .13);
  color: #ffd7ce;
  font-size: .73rem;
  line-height: 1.45;
}
.duel-google-error { margin-bottom: 1rem; }
.duel-google-button {
  display: grid;
  grid-template-columns: 1.4rem 1fr 1rem;
  align-items: center;
  width: 100%;
  min-height: 3.55rem;
  padding: 0 1.1rem;
  border: 1px solid rgba(245, 241, 233, .38);
  border-radius: 0;
  cursor: pointer;
  background: var(--paper);
  color: var(--ink);
  font: 600 .72rem var(--mono);
  letter-spacing: .055em;
  text-align: center;
}
.duel-google-button svg { width: 1.2rem; height: 1.2rem; }
.duel-google-button span { padding: 0 .5rem; }
.duel-google-button b { color: var(--red-deep); font-size: 1.2rem; font-weight: 400; }
.duel-google-button:hover { border-color: var(--red); background: #fff; }
.duel-google-button:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }
.duel-google-button:disabled { cursor: wait; opacity: .7; }
.duel-login-divider {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin: 1.15rem 0 .25rem;
  color: rgba(245, 241, 233, .55);
  font-size: .6rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.duel-login-divider::before,
.duel-login-divider::after { content: ""; flex: 1; border-top: 1px solid var(--line); }
.duel-login-divider span { white-space: nowrap; }
.duel-login-form { display: grid; gap: .55rem; }
.duel-login-form label {
  margin-top: .6rem;
  color: var(--sand);
  font-size: .65rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.duel-login-form label small {
  color: rgba(245, 241, 233, .55);
  font-size: .56rem;
  letter-spacing: .04em;
}
.duel-login-form input[type="text"],
.duel-login-form input[type="email"],
.duel-login-form input[type="password"] {
  min-width: 0;
  height: 3.15rem;
  padding: 0 .9rem;
  border: 1px solid rgba(245, 241, 233, .35);
  border-radius: 0;
  outline: none;
  background: #15130f;
  color: var(--paper);
  font: .9rem var(--mono);
}
.duel-login-form input:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 2px rgba(255, 93, 61, .2);
}
.duel-login-form .duel-login-remember {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin: .55rem 0 .85rem;
  color: var(--sand);
  font-size: .69rem;
  letter-spacing: 0;
  text-transform: none;
}
.duel-login-remember input { accent-color: var(--red); }
.duel-login-form button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.55rem;
  padding: 0 1.1rem;
  border: 0;
  border-radius: 0;
  cursor: pointer;
  background: var(--red);
  color: var(--ink);
  font: 600 .75rem var(--mono);
  letter-spacing: .06em;
}
.duel-login-form button span { font-size: 1.35rem; }
.duel-login-form button:hover { background: var(--paper); }
.duel-login-form button:focus-visible { outline: 2px solid var(--paper); outline-offset: 3px; }

.duel-registration-trap {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.duel-login-help { display: grid; gap: .65rem; margin: 1.05rem 0 1.85rem; }
.duel-login-help a { color: var(--sand); font-size: .67rem; }
.duel-login-help a:hover { color: var(--red); }
.duel-login-help .duel-login-create { color: var(--red); font-weight: 600; }
.duel-login-rules {
  display: grid;
  gap: .65rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
.duel-login-rules span { color: var(--sand); font-size: .63rem; }
.duel-login-rules b { display: inline-block; width: 2.1rem; color: var(--red); font-size: .6rem; }
.duel-login-footer { margin: 0; color: rgba(245, 241, 233, .45); font-size: .57rem; letter-spacing: .08em; }

@media (min-width: 760px) {
  .duel-login-shell { padding: 3.5rem 0 2rem; }
  .duel-login-card { margin-left: 9vw; }
}

@media (max-width: 420px) {
  .duel-login-shell { width: min(100% - 1.25rem, 70rem); padding-top: 1.15rem; }
  .duel-login-card { padding: 1.7rem 1.4rem; box-shadow: 9px 9px 0 rgba(255, 93, 61, .72); }
  .duel-google-button {
    grid-template-columns: 1.2rem minmax(0, 1fr);
    gap: .65rem;
    min-height: 3.25rem;
    padding: .45rem .9rem;
    font-size: .66rem;
    letter-spacing: .04em;
    line-height: 1.25;
    text-align: left;
  }
  .duel-google-button svg { width: 1.1rem; height: 1.1rem; }
  .duel-google-button span { padding: 0; }
  .duel-google-button b { display: none; }
}