.app-shell-hidden {
  display: none;
}

.auth-shell-hidden {
  display: none;
}

.auth-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding: 20px 70px 40px;
}

.auth-topbar {
  box-shadow: var(--shadow);
}

.auth-brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
}

.auth-brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  background: linear-gradient(145deg, rgba(74, 158, 255, 0.24), rgba(74, 158, 255, 0.08));
  border: 1px solid rgba(74, 158, 255, 0.26);
}

.auth-brand-copy {
  display: grid;
  gap: 2px;
}

.auth-brand-title {
  font-size: 15px;
  font-weight: 700;
}

.auth-brand-subtitle {
  font-size: 12px;
  color: var(--text-secondary);
}

.auth-page-stack {
  min-height: calc(100vh - 120px);
}

.auth-page {
  display: none;
  animation: fadeUp 0.25s ease both;
}

.auth-page.is-active {
  display: block;
}

.auth-hero-grid,
.auth-card-wrap {
  min-height: calc(100vh - 180px);
}

.auth-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.9fr);
  gap: 22px;
  align-items: stretch;
}

.auth-hero-copy,
.auth-feature-panel,
.auth-card {
  /* Translucent panel that follows the theme (dark glass / light glass);
     in dark mode color-mix(#292828 86%) === the original rgba(41,40,40,0.86). */
  background: color-mix(in srgb, var(--card) 86%, transparent);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.auth-hero-copy,
.auth-card {
  padding: 32px;
}

.auth-feature-panel {
  display: grid;
  gap: 14px;
  padding: 18px;
}

.auth-eyebrow {
  margin-bottom: 12px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #9fc4ff;
}

.auth-copy-text,
.auth-feature-card p,
.auth-card-head p {
  margin: 0;
  color: var(--text-secondary);
}

.auth-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.auth-feature-card {
  padding: 18px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.16);
  border: 1px solid var(--border-subtle);
}

.auth-feature-icon {
  width: 32px;
  height: 32px;
  margin-bottom: 12px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: rgba(74, 158, 255, 0.18);
  color: #9fc4ff;
  font-weight: 700;
  font-size: 13px;
}

.auth-feature-title {
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 1rem;
}

.auth-card-wrap {
  display: grid;
  place-items: center;
}

.auth-card {
  width: min(520px, 100%);
}

.auth-card-head {
  margin-bottom: 24px;
}

.auth-form {
  display: grid;
  gap: 14px;
}

.auth-field {
  display: grid;
  gap: 6px;
}

.auth-field span {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.auth-input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: rgba(0, 0, 0, 0.18);
  color: var(--text-primary);
}

.auth-input:focus-visible {
  outline: 2px solid var(--selection);
  outline-offset: 2px;
}

.auth-form-message {
  min-height: 20px;
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.auth-form-message[data-tone="success"] { color: #33c46e; }
.auth-form-message[data-tone="error"] { color: #e57d7d; }
.auth-form-message[data-tone="info"] { color: #f3c969; }

.auth-download-meta {
  margin: 18px 0 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.auth-download-meta a {
  color: #9fc4ff;
  text-decoration: none;
}

.auth-download-meta a:hover {
  text-decoration: underline;
}

.auth-platform-card {
  display: grid;
  gap: 10px;
}

.auth-platform-card.is-disabled {
  opacity: 0.62;
}

.auth-platform-card .primary-button {
  justify-self: start;
  align-self: start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  text-decoration: none;
}

.auth-platform-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.auth-platform-status {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: rgba(var(--overlay-rgb), 0.06);
  border: 1px solid var(--border-subtle);
}

.auth-platform-status.is-available {
  color: #9fc4ff;
  background: rgba(74, 158, 255, 0.18);
  border-color: rgba(74, 158, 255, 0.36);
}

@media (max-width: 1200px) {
  .auth-shell {
    padding: 20px 24px 40px;
  }

  .auth-hero-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .auth-shell {
    padding: 16px 14px 24px;
  }

  .auth-hero-copy,
  .auth-feature-panel,
  .auth-card {
    padding-left: 18px;
    padding-right: 18px;
  }

  .auth-actions {
    flex-direction: column;
  }

  .auth-actions .primary-button,
  .auth-actions .ghost-button,
  .auth-form .primary-button {
    width: 100%;
  }
}