/* ============================================================
   AUTH PAGE — index.html
   ============================================================ */

.auth-page {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--s-5);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  animation: fadeUp var(--t-med) ease both;
}

.auth-logo {
  text-align: center;
  margin-bottom: var(--s-6);
}

.auth-logo__icon {
  width: 64px;
  height: 64px;
  background: var(--accent-light);
  border-radius: var(--r-xl);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: var(--s-3);
  border: 1px solid var(--glass-border);
}

.auth-logo__title {
  font-size: var(--fs-3xl);
  font-weight: 800;
  font-family: var(--font-display);
  background: linear-gradient(135deg, var(--accent), #a855f7, #ec4899);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 4s ease infinite;
  display: block;
}

.auth-logo__sub {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-top: var(--s-1);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  padding: var(--s-6);
}

.auth-input-wrap {
  position: relative;
}

.auth-input-wrap .input-toggle {
  position: absolute;
  right: var(--s-3);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: var(--s-1);
  border-radius: var(--r-sm);
  transition: color var(--t-fast);
}
.auth-input-wrap .input-toggle:hover { color: var(--text-secondary); }

.auth-advanced {
  font-size: var(--fs-sm);
  color: var(--accent);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  text-align: left;
  transition: opacity var(--t-fast);
}
.auth-advanced:hover { opacity: 0.8; }

.auth-advanced-panel {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  padding: var(--s-4);
  background: var(--surface);
  border-radius: var(--r-md);
  border: 1px solid var(--glass-border);
}

.auth-btn {
  margin-top: var(--s-2);
}

.auth-footer {
  text-align: center;
  padding: var(--s-4) var(--s-6);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  border-top: 1px solid var(--divider);
  line-height: var(--lh-relaxed);
}

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

.passphrase-strength {
  margin-top: var(--s-1);
}

.strength-bar {
  height: 3px;
  background: var(--surface);
  border-radius: var(--r-full);
  overflow: hidden;
  margin-bottom: 4px;
}

.strength-fill {
  height: 100%;
  border-radius: var(--r-full);
  transition: width var(--t-med), background var(--t-med);
}

.strength-fill.weak   { width: 25%; background: var(--danger); }
.strength-fill.fair   { width: 50%; background: var(--warning); }
.strength-fill.good   { width: 75%; background: var(--info); }
.strength-fill.strong { width: 100%; background: var(--success); }