/* ─── Auth Pages ─────────────────────────────────────────────────────────────── */

.auth-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.auth-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-16) var(--space-12);
}

.auth-form-wrap {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-10);
  text-decoration: none;
}

.auth-logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
}

.auth-heading {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-2);
}

.auth-subheading {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.auth-form .btn-primary {
  width: 100%;
  height: 44px;
  font-size: var(--text-base);
  margin-top: var(--space-2);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.auth-footer {
  margin-top: var(--space-6);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.auth-footer a {
  font-weight: var(--weight-medium);
}

.auth-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  display: none;
}

.auth-alert.show {
  display: flex;
}

.auth-alert-error {
  background: var(--error-50);
  color: var(--error-600);
  border: 1px solid #fecaca;
}

.auth-alert-success {
  background: var(--success-50);
  color: var(--success-600);
  border: 1px solid #a7f3d0;
}

/* ─── Auth Visual Panel ──────────────────────────────────────────────────────── */

.auth-visual {
  background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-700) 50%, var(--primary-800) 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--space-12);
  position: relative;
  overflow: hidden;
}

.auth-visual::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -25%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.auth-visual::after {
  content: '';
  position: absolute;
  bottom: -25%;
  left: -15%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.auth-visual-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: white;
  max-width: 400px;
}

.auth-visual-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--space-6);
  backdrop-filter: blur(8px);
}

.auth-visual-title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: white;
  margin-bottom: var(--space-4);
}

.auth-visual-desc {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-8);
}

.auth-feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  text-align: left;
}

.auth-feature-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.85);
}

.auth-feature-check {
  width: 22px;
  height: 22px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  flex-shrink: 0;
}

/* Certificate preview mockup in auth panel */
.auth-cert-preview {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-10);
  box-shadow: var(--shadow-2xl);
  max-width: 400px;
  width: 100%;
  margin-bottom: var(--space-8);
  text-align: center;
  position: relative;
}

.auth-cert-border {
  position: absolute;
  inset: 8px;
  border: 2px solid;
  border-image: linear-gradient(135deg, #d97706, #f59e0b, #d97706) 1;
  pointer-events: none;
}

.auth-cert-ornament {
  color: var(--accent-500);
  font-size: 1.75rem;
  margin-bottom: var(--space-3);
}

.auth-cert-title {
  font-family: var(--font-serif);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--neutral-500);
  margin-bottom: var(--space-2);
}

.auth-cert-name {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--neutral-900);
  border-bottom: 1px solid var(--neutral-300);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-2);
}

.auth-cert-body {
  font-size: var(--text-xs);
  color: var(--neutral-500);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.auth-cert-course {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--primary-700);
  margin-bottom: var(--space-4);
}

.auth-cert-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--neutral-200);
  font-size: var(--text-xs);
  color: var(--neutral-500);
}

.auth-cert-sig {
  text-align: center;
}

.auth-cert-sig-line {
  width: 80px;
  height: 1px;
  background: var(--neutral-400);
  margin: var(--space-1) auto 0;
}

/* ─── Password Field Toggle ──────────────────────────────────────────────────── */

.input-with-action {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-action .form-input {
  padding-right: 44px;
}

.input-action-btn {
  position: absolute;
  right: var(--space-3);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.input-action-btn:hover {
  color: var(--color-text);
}

/* ─── Responsive ─────────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .auth-page { grid-template-columns: 1fr; }
  .auth-visual { display: none; }
  .auth-panel { padding: var(--space-10) var(--space-6); }
}

@media (max-width: 480px) {
  .auth-form-wrap { max-width: 100%; }
}