.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-card {
  background: var(--dark-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg), 0 0 60px rgba(var(--primary-rgb), 0.07);
  border: 1px solid rgba(var(--white-rgb), 0.08);
  animation: fadeUp 0.4s ease;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.login-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}
.login-header h1 {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.3rem;
}
.login-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.login-header-title {
  display: none;
}

.login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 0.75rem;
}
.login-logo img {
  height: 10rem;
  width: auto;
  filter: drop-shadow(0 0 20px rgba(var(--primary-rgb), 0.5));
}
.login-logo .logo-light {
  display: none;
}

[data-theme=light] .login-logo .logo-dark {
  display: none;
}
[data-theme=light] .login-logo .logo-light {
  display: block;
}

.tab-bar {
  display: flex;
  background: var(--dark-lighter);
  border-radius: var(--radius-sm);
  padding: 0.25rem;
  margin-bottom: var(--spacing-md);
  gap: 0.25rem;
}

.tab-btn {
  flex: 1;
  padding: 0.6rem;
  border: none;
  border-radius: calc(var(--radius-sm) - 2px);
  background: transparent;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}
.tab-btn.active {
  background: var(--dark-card);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.hidden {
  display: none !important;
}

.section-intro {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.text-link-row {
  text-align: center;
  font-size: 0.85rem;
  margin-top: var(--spacing-sm);
}

.text-link {
  color: var(--text-secondary);
  text-decoration: none;
  cursor: pointer;
}
.text-link:hover {
  color: var(--primary);
  text-decoration: underline;
}

.hint {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.oauth-section {
  margin-top: var(--spacing-md);
}

.separator {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  font-size: 0.85rem;
}
.separator::before, .separator::after {
  content: "";
  flex: 1;
  height: 1px;
  background: rgba(var(--white-rgb), 0.1);
}

.icon-input-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--spacing-md);
}

.reg-icon-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 7rem;
  height: 5rem;
  border-radius: var(--radius-sm);
  background: var(--dark-lighter);
}

.reg-icon-preview i {
  font-size: 2.5rem;
  color: var(--primary);
}

.icon-hint {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
}

.icon-hint a {
  color: var(--primary);
  text-decoration: none;
}

.icon-hint a:hover {
  text-decoration: underline;
}

.oauth-buttons {
  display: flex;
  gap: 0.75rem;
}

.btn-oauth {
  flex: 1;
  justify-content: center;
  background: var(--dark-lighter);
  color: var(--text-primary);
  border: 1px solid rgba(var(--white-rgb), 0.1);
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.9rem;
  padding: 0.7rem 1rem;
}
.btn-oauth:hover {
  border-color: rgba(var(--white-rgb), 0.3);
  transform: translateY(-1px);
}
.btn-oauth.disabled {
  opacity: 0.35;
  pointer-events: none;
}