.auth-page {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

.auth-page *,
.auth-page *::before,
.auth-page *::after {
  box-sizing: border-box;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.auth-main {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 24px;
  overflow: hidden;
}

.auth-main::before {
  content: "";
  position: absolute;
  inset: -18% -10% auto -10%;
  height: 620px;
  background: radial-gradient(60% 80% at 50% 0%, var(--hero-glow), transparent 70%);
  pointer-events: none;
}

.auth-main::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(70% 60% at 50% 8%, #000, transparent 74%);
  mask-image: radial-gradient(70% 60% at 50% 8%, #000, transparent 74%);
  opacity: 0.5;
  pointer-events: none;
}

.auth-shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: min(454px, calc(100vw - 48px));
}

.auth-head {
  text-align: center;
  margin-bottom: 28px;
}

.auth-logo {
  width: 58px;
  height: 58px;
  object-fit: contain;
  margin: 0 auto 18px;
  filter: drop-shadow(0 0 16px var(--hero-glow));
}

.auth-head h1 {
  margin: 0;
  font-size: 42px;
  line-height: 1.05;
  font-weight: 750;
  letter-spacing: 0;
  text-wrap: balance;
}

.auth-head p {
  margin: 12px auto 0;
  max-width: 34ch;
  color: var(--text-2);
  font-size: 16px;
}

.auth-card {
  width: 100%;
  background: color-mix(in srgb, var(--surface), transparent 4%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow), 0 0 80px -34px var(--hero-glow);
  padding: 28px;
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.auth-alert {
  margin-bottom: 20px;
  border: 1px solid color-mix(in srgb, var(--bad), transparent 58%);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bad), transparent 90%);
  color: var(--bad);
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 600;
}

.auth-alert ul {
  margin: 0;
  padding-left: 18px;
}

.auth-oauth {
  width: 100%;
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg), var(--surface) 24%);
  color: var(--text);
  font-size: 15px;
  font-weight: 750;
  text-decoration: none;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}

.auth-oauth:hover {
  border-color: color-mix(in srgb, var(--accent), transparent 46%);
  background: color-mix(in srgb, var(--accent), transparent 91%);
  transform: translateY(-1px);
}

.auth-oauth-mark {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #fff;
  color: #1f1f1f;
  font-size: 14px;
  font-weight: 800;
}

.auth-oauth-consent {
  margin: 12px 2px 0;
  color: var(--text-3);
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
}

.auth-oauth-consent a {
  color: var(--accent-text);
  font-weight: 700;
}

.auth-divider {
  margin: 20px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-3);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--border);
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.field input[type="text"],
.field input[type="email"],
.field input[type="password"] {
  width: 100%;
  height: 52px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg), var(--surface) 18%);
  color: var(--text);
  padding: 0 16px;
  font: inherit;
  font-size: 15px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.field input::placeholder {
  color: var(--text-3);
}

.field input:focus {
  border-color: color-mix(in srgb, var(--accent), transparent 38%);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent), transparent 88%);
}

.field-hint,
.field-error {
  margin: 8px 0 0;
  font-size: 13px;
  font-weight: 600;
}

.field-hint {
  color: var(--text-3);
}

.field-error {
  color: var(--bad);
}

.auth-options {
  margin: 4px 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.remember {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--text-2);
  font-size: 14px;
  font-weight: 500;
}

.remember input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.auth-consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text-2);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
}

.auth-consent input {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  accent-color: var(--accent);
}

.auth-consent a {
  color: var(--accent-text);
  font-weight: 700;
}

.auth-submit {
  width: 100%;
  justify-content: center;
  height: 52px;
  font-size: 16px;
}

.auth-switch {
  margin: 22px 0 0;
  text-align: center;
  color: var(--text-2);
  font-size: 14px;
}

.auth-switch a,
.auth-back {
  color: var(--accent-text);
  font-weight: 700;
}

.auth-back-wrap {
  margin-top: 22px;
  text-align: center;
}

.auth-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-2);
  font-size: 14px;
  transition: color 0.15s ease;
}

.auth-back:hover {
  color: var(--text);
}

@media (max-width: 640px) {
  .auth-main {
    align-items: flex-start;
    padding: 52px 24px;
  }

  .auth-shell {
    max-width: calc(100vw - 48px);
  }

  .auth-head h1 {
    font-size: 34px;
  }

  .auth-card {
    padding: 22px;
  }
}