:root {
  --ink: #14131a;
  --ink-2: #1e1c26;
  --paper: #f7f4ef;
  --paper-card: #fffcf8;
  --line: #e4ddd2;
  --text: #1f1c18;
  --muted: #8a8176;
  --gold: #b08a52;
  --gold-deep: #8d6c3c;
  --danger: #b45a55;
  --font-display: "Cormorant Garamond", "Times New Roman", serif;
  --font-ui: "Source Sans 3", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
}

body.login-page {
  min-height: 100vh;
  font-family: var(--font-ui);
  color: var(--text);
  background: var(--paper);
}

.login-stage {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
}

.brand-pane {
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: 48px;
  background:
    radial-gradient(900px 520px at 20% 20%, rgba(176, 138, 82, 0.18), transparent 55%),
    radial-gradient(700px 480px at 85% 75%, rgba(120, 140, 160, 0.12), transparent 50%),
    linear-gradient(155deg, #17151e 0%, #221f2b 48%, #15131b 100%);
  color: #f6f1e8;
}

.brand-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(18px);
  opacity: 0.55;
  animation: orbDrift 14s ease-in-out infinite alternate;
}

.brand-orb-a {
  width: 280px;
  height: 280px;
  left: -40px;
  top: 18%;
  background: radial-gradient(circle, rgba(176, 138, 82, 0.45), transparent 70%);
}

.brand-orb-b {
  width: 340px;
  height: 340px;
  right: -80px;
  bottom: 8%;
  background: radial-gradient(circle, rgba(140, 160, 180, 0.28), transparent 70%);
  animation-delay: -4s;
}

.brand-content {
  position: relative;
  z-index: 1;
  text-align: left;
  max-width: 520px;
  animation: brandRise 1s ease both;
}

.brand-kicker {
  margin: 0 0 18px;
  letter-spacing: 0.42em;
  font-size: 0.78rem;
  color: rgba(246, 241, 232, 0.55);
  text-indent: 0.42em;
}

.brand-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(3.6rem, 7vw, 6rem);
  line-height: 0.95;
  letter-spacing: 0.04em;
}

.brand-title span {
  display: inline-block;
  background: linear-gradient(120deg, #f8f1e4 0%, #d8b57a 45%, #f4ebe0 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: brandShimmer 6s ease-in-out infinite, brandFloat 5.5s ease-in-out infinite;
}

.brand-title span:nth-child(2) { animation-delay: 0.12s, 0.2s; }
.brand-title span:nth-child(3) { animation-delay: 0.24s, 0.4s; }

.brand-line {
  margin: 28px 0 0;
  font-size: 1.05rem;
  letter-spacing: 0.28em;
  color: rgba(246, 241, 232, 0.62);
  animation: brandRise 1.15s ease 0.15s both;
}

.form-pane {
  display: grid;
  place-items: center;
  padding: 40px 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.55), transparent 40%),
    radial-gradient(700px 420px at 90% 0%, #efe6d7 0%, transparent 60%),
    var(--paper);
}

.form-card {
  width: min(420px, 100%);
  padding: 36px 32px 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 252, 248, 0.92);
  box-shadow: 0 24px 60px rgba(35, 28, 20, 0.06);
  backdrop-filter: blur(8px);
  animation: cardIn 0.85s ease 0.1s both;
}

.form-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.form-head p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.login-form {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.login-form label {
  display: grid;
  gap: 8px;
}

.login-form label span {
  font-size: 0.86rem;
  color: var(--muted);
}

.login-form input {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.login-form input:focus {
  outline: none;
  border-color: #c4a574;
  box-shadow: 0 0 0 3px rgba(176, 138, 82, 0.16);
}

.login-submit {
  margin-top: 6px;
  border: 0;
  border-radius: 12px;
  padding: 13px 16px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(180deg, #b89963, var(--gold-deep));
  box-shadow: 0 10px 22px rgba(141, 108, 60, 0.22);
  transition: transform 0.15s ease, filter 0.15s ease;
}

.login-submit:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.login-error {
  min-height: 1.2em;
  margin: 0;
  color: var(--danger);
  font-size: 0.9rem;
}

.admin-entry {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.admin-entry:hover {
  color: var(--gold-deep);
  border-bottom-color: rgba(141, 108, 60, 0.35);
}

.login-actions {
  margin-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.register-btn {
  border: 1px solid rgba(176, 138, 82, 0.35);
  background: rgba(176, 138, 82, 0.08);
  color: var(--gold-deep);
  border-radius: 999px;
  padding: 10px 18px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}

.register-btn:hover {
  background: rgba(176, 138, 82, 0.16);
  transform: translateY(-1px);
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 20px;
}

.modal.hidden { display: none !important; }
.hidden { display: none !important; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(20, 16, 12, 0.45);
}

.modal-card {
  position: relative;
  width: min(520px, 100%);
  background: #fffcf8;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 24px 60px rgba(35, 28, 20, 0.18);
}

.modal-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.modal-toolbar h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 600;
}

.ghost-close {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  font: inherit;
  cursor: pointer;
}

.prefix-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}

.prefix-domain {
  color: var(--muted);
  font-size: 0.92rem;
  white-space: nowrap;
}

.register-result {
  margin-top: 8px;
  display: grid;
  gap: 12px;
}

.result-tip {
  margin: 0;
  color: var(--gold-deep);
  font-weight: 600;
}

.result-item {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.result-item span {
  color: var(--muted);
  font-size: 0.85rem;
}

.result-item code {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.82rem;
  word-break: break-all;
  color: var(--text);
}

.mini-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--gold-deep);
  border-radius: 8px;
  padding: 6px 10px;
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
}

.result-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.result-actions {
  display: grid;
  gap: 10px;
}

.result-open {
  text-align: center;
  text-decoration: none;
  display: block;
}

@keyframes brandRise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes brandFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes brandShimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes orbDrift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(24px, -18px, 0) scale(1.08); }
}

@keyframes cardIn {
  from { opacity: 0; transform: translateX(18px); }
  to { opacity: 1; transform: translateX(0); }
}

@media (max-width: 900px) {
  .login-stage {
    grid-template-columns: 1fr;
  }

  .brand-pane {
    min-height: 42vh;
    padding: 36px 24px;
  }

  .brand-title {
    font-size: clamp(3rem, 12vw, 4.2rem);
  }

  .brand-content {
    text-align: center;
  }

  .form-pane {
    padding: 28px 18px 40px;
  }
}