.shell-topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 24px;
  background: var(--surface, #111827);
  border-bottom: 1px solid var(--border-soft, rgba(255,255,255,0.08));
}

.shell-brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent, #64ffda);
  text-decoration: none;
}

.shell-nav {
  display: flex;
  gap: 16px;
  flex: 1;
}

.shell-nav a {
  color: var(--text-secondary, #8892b0);
  text-decoration: none;
  font-size: 0.95rem;
}

.shell-nav a:hover {
  color: var(--text-primary, #e2eaf5);
}

.shell-user {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary, #8892b0);
  font-size: 0.9rem;
}

.shell-logout {
  background: transparent;
  color: var(--text-secondary, #8892b0);
  border: 1px solid var(--border-soft, rgba(255,255,255,0.08));
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.85rem;
  cursor: pointer;
  font-family: inherit;
}

.shell-logout:hover {
  color: var(--text-primary, #e2eaf5);
  border-color: var(--text-secondary, #8892b0);
}

.shell-logout[disabled] {
  opacity: 0.5;
  cursor: progress;
}

.signed-out {
  text-align: center;
  padding: 60px 20px;
}

.signed-out h2 {
  margin-bottom: 12px;
}

.signed-out p {
  color: var(--text-secondary, #8892b0);
  margin-bottom: 24px;
}

.settings-form,
.run-panel {
  background: var(--surface, #111827);
  border: 1px solid var(--border-soft, rgba(255,255,255,0.08));
  border-radius: var(--radius-lg, 16px);
  padding: 24px;
  margin-bottom: 24px;
}

.settings-form h2,
.run-panel h2 {
  margin-top: 0;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.field label {
  font-size: 0.85rem;
  color: var(--text-secondary, #8892b0);
}

.field input[type="text"],
.field input[type="email"],
.field input[type="password"],
.field input[type="number"],
.field select,
.field textarea {
  background: var(--surface-2, #1a2335);
  color: var(--text-primary, #e2eaf5);
  border: 1px solid var(--border-soft, rgba(255,255,255,0.08));
  border-radius: 6px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 0.95rem;
}

.model-blurb {
  color: var(--text-muted, #4a5568);
  font-size: 0.85rem;
  margin: 4px 0 0;
}

.criteria-row {
  display: grid;
  grid-template-columns: 1fr 100px auto;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}

.run-status {
  font-variant-numeric: tabular-nums;
  color: var(--text-secondary, #8892b0);
  margin-top: 12px;
}

/* ---------- Auth pages (login.html / signup.html) ---------- */

.auth-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 48px 20px;
  gap: 32px;
}

.auth-brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent, #64ffda);
  text-decoration: none;
  font-size: 1.1rem;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--surface, #111827);
  border: 1px solid var(--border-soft, rgba(255,255,255,0.08));
  border-radius: var(--radius-lg, 16px);
  padding: 32px;
}

.auth-card h1 {
  margin: 0 0 24px;
  font-size: 1.4rem;
  font-weight: 600;
}

.auth-form .field:last-of-type {
  margin-bottom: 20px;
}

.auth-submit {
  width: 100%;
  padding: 12px;
  font-size: 0.95rem;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0;
  color: var(--text-muted, #4a5568);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border-soft, rgba(255,255,255,0.08));
}

.auth-providers {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.auth-provider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 14px;
  width: 100%;
  text-decoration: none;
}

.provider-glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 4px;
  background: var(--surface-2, #1a2335);
  color: var(--text-primary, #e2eaf5);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.auth-footer {
  margin: 24px 0 0;
  text-align: center;
  color: var(--text-secondary, #8892b0);
  font-size: 0.9rem;
}

.auth-footer a {
  color: var(--accent, #64ffda);
  text-decoration: none;
}

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