/* Auth screens — split layout per design/core/Core.dc.html login mockup. */

.auth {
  display: flex;
  align-items: stretch;
  min-height: 100vh;
  background: var(--bg);
}

/* Left: form panel ------------------------------------------------------- */

.auth-form-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
}

.auth-form-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 100% at 20% 0%, var(--accent-soft), transparent 55%),
    radial-gradient(80% 80% at 100% 100%, rgba(34, 211, 238, 0.05), transparent 60%);
  pointer-events: none;
}

.auth-card {
  position: relative;
  width: 100%;
  max-width: 380px;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.auth-brand-name {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: var(--tracking-tighter);
}

.auth-brand-name span {
  color: var(--text-dim);
  font-weight: 400;
}

.auth-heading {
  margin: 0 0 6px;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: var(--tracking-heading);
}

.auth-subtitle {
  margin: 0 0 var(--space-7);
  color: var(--text-muted);
  font-size: var(--text-xl);
}

.auth-flash {
  margin-bottom: var(--space-4);
  padding: 10px 13px;
  border-radius: var(--radius);
  font-size: var(--text-base);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-secondary);
}

.auth-flash-alert {
  border-color: rgba(242, 109, 109, 0.4);
  color: var(--danger);
}

.auth-flash-notice {
  border-color: var(--accent-border);
  color: var(--accent);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.auth-field { display: block; }

.auth-field .input { width: 100%; }

.auth-form-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin: 2px 0 6px;
  font-size: var(--text-base);
}

.auth-link { color: var(--accent); }

.auth-submit {
  width: 100%;
  height: auto;
  justify-content: center;
  padding: 13px;
  font-size: var(--text-xl);
  letter-spacing: var(--tracking-tight);
}

.auth-footer {
  margin-top: 26px;
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--text-faint);
  font-size: var(--text-sm);
}

.auth-footer-dot { opacity: 0.4; }

.auth-locale-toggle {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-muted);
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
}

/* Right: cube motif panel ------------------------------------------------ */

.auth-brand-panel {
  flex: 1;
  background: var(--bg-deep);
  border-left: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.auth-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--surface-raised) 1px, transparent 1px),
    linear-gradient(90deg, var(--surface-raised) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.5;
  mask-image: radial-gradient(60% 60% at 50% 50%, #000, transparent);
}

.auth-brand-panel-inner {
  position: relative;
  text-align: center;
  padding: var(--space-8);
  max-width: 420px;
}

.auth-cube { margin-bottom: var(--space-6); }

.auth-tagline {
  font-size: var(--text-display);
  font-weight: 600;
  letter-spacing: var(--tracking-heading);
  margin-bottom: 10px;
}

.auth-tagline-sub {
  color: var(--text-dim);
  font-size: var(--text-xl);
  line-height: 1.6;
}

/* Mobile: stack the form, hide the motif panel */
@media (max-width: 860px) {
  .auth-brand-panel { display: none; }
}