/* 登录 / 注册：承接启封暗室，单列同轴居中，无卡片壳 */
.page-auth {
  --void: #03040a;
  --brass: #c9b896;
  --brass-dim: rgba(201, 184, 150, 0.38);
  --cyan: #5ec4b0;
  --amber: #e6b85c;
  --line: rgba(201, 184, 150, 0.2);
  --ink-soft: #ebe6dc;
  --muted: rgba(235, 230, 220, 0.55);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --auth-col: 22.5rem;

  color-scheme: dark;
  color: var(--ink-soft);
  background-color: #06070e;
  background-image:
    linear-gradient(90deg, rgba(201, 184, 150, 0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(201, 184, 150, 0.028) 1px, transparent 1px),
    radial-gradient(ellipse 90% 55% at 50% -8%, rgba(160, 150, 130, 0.14), transparent 58%),
    linear-gradient(180deg, #12151f 0%, #080a12 40%, #04050a 100%);
  background-size: 72px 72px, 72px 72px, auto, auto;
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page-auth::before,
.page-auth::after {
  content: none !important;
}

.page-auth .site-header {
  background: rgba(6, 7, 14, 0.78);
  border-bottom-color: var(--line);
  backdrop-filter: blur(14px);
}

.page-auth .site-header .brand {
  color: var(--brass);
}

.page-auth .site-header .brand:hover {
  color: var(--amber);
}

.page-auth .nav a {
  color: var(--muted);
  text-decoration: none;
}

.page-auth .nav a:hover {
  color: var(--brass);
}

.page-auth .site-footer {
  margin-top: auto;
  border-top-color: var(--line);
  color: var(--muted);
}

.page-auth .site-footer a {
  color: var(--brass-dim);
}

.auth-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(var(--auth-col), calc(100% - 2.5rem));
  margin: 0 auto;
  padding: 2.75rem 0 3.25rem;
}

.auth-panel {
  width: 100%;
  text-align: center;
  animation: auth-rise 0.85s var(--ease) both;
}

@keyframes auth-rise {
  from {
    opacity: 0;
    transform: translateY(0.85rem);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

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

.auth-form {
  display: grid;
  gap: 1rem;
  text-align: left;
}

.auth-field {
  display: grid;
  gap: 0.4rem;
}

.auth-field .label-text {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.auth-field input {
  width: 100%;
  font: inherit;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  padding: 0.8rem 0.1rem 0.7rem;
  border: none;
  border-bottom: 1px solid var(--brass-dim);
  border-radius: 0;
  background: transparent;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.auth-field input::placeholder {
  color: rgba(235, 230, 220, 0.42);
}

.auth-field input:hover {
  border-bottom-color: rgba(201, 184, 150, 0.55);
}

.auth-field input:focus {
  outline: none;
  border-bottom-color: var(--amber);
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(230, 184, 92, 0.06) 100%
  );
}

.auth-submit {
  width: 100%;
  margin-top: 0.25rem;
  min-height: 3rem;
  border: 1px solid rgba(230, 184, 92, 0.45);
  border-radius: 0.1rem;
  background: linear-gradient(180deg, rgba(230, 184, 92, 0.22), rgba(201, 184, 150, 0.1));
  color: var(--amber);
  font: inherit;
  font-size: 0.95rem;
  letter-spacing: 0.28em;
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.auth-submit:hover {
  border-color: var(--amber);
  background: linear-gradient(180deg, rgba(230, 184, 92, 0.32), rgba(201, 184, 150, 0.16));
  color: #f3d9a0;
}

.auth-submit:active {
  transform: translateY(1px);
}

.auth-submit:disabled {
  opacity: 0.55;
  cursor: wait;
}

.auth-demo {
  width: 100%;
  margin-top: 0.15rem;
  min-height: 2.65rem;
  border: 1px solid rgba(201, 184, 150, 0.28);
  border-radius: 0.1rem;
  background: transparent;
  color: rgba(235, 230, 220, 0.78);
  font: inherit;
  font-size: 0.86rem;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease),
    background 0.2s var(--ease);
}

.auth-demo:hover {
  border-color: rgba(201, 184, 150, 0.55);
  color: var(--brass);
  background: rgba(201, 184, 150, 0.06);
}

.auth-demo:disabled {
  opacity: 0.55;
  cursor: wait;
}

.auth-demo-hint {
  margin: 0.15rem 0 0;
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: rgba(235, 230, 220, 0.42);
}

.auth-demo[hidden],
.auth-demo-hint[hidden] {
  display: none !important;
}

.auth-msg {
  margin: 0;
  text-align: center;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.auth-msg.is-error {
  color: #e8a090;
}

.auth-switch {
  margin: 1.5rem 0 0;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.auth-switch a {
  color: var(--brass);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 184, 150, 0.35);
}

.auth-switch a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.auth-note {
  margin: 1rem 0 0;
  font-size: 0.78rem;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: rgba(235, 230, 220, 0.4);
}

.auth-note a {
  color: var(--brass-dim);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 184, 150, 0.25);
}

.auth-note a:hover {
  color: var(--brass);
}

.page-auth [hidden] {
  display: none !important;
}

.turnstile-mount:not([hidden]) {
  display: flex;
  justify-content: center;
  min-height: 65px;
}

@media (max-width: 420px) {
  .auth-stage {
    width: calc(100% - 2rem);
    padding-top: 2rem;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .auth-panel {
    animation: none;
  }
}