/* ============================================
   VEXDYN — Authentication Layer
   Extends the existing design system (style.css).
   No new colors/fonts introduced — reuses the
   graphite / silver VEXDYN identity tokens.
   ============================================ */

/* ---- Nav auth slot (desktop header-actions) ---- */
.auth-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.auth-nav .auth-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.auth-nav .auth-link:hover {
  color: var(--text-primary);
  background: var(--accent-soft);
}

.auth-nav .btn {
  padding: 9px 18px;
  font-size: 0.8rem;
}

.auth-nav-skeleton {
  width: 84px;
  height: 34px;
  border-radius: 999px;
  background: var(--accent-soft);
  opacity: 0.5;
}

/* ---- Nav auth slot (mobile) ---- */
.nav-mobile-auth,
.mobile-nav-auth {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.nav-mobile-auth a,
.mobile-nav-auth a {
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}

.nav-mobile-auth a:hover,
.mobile-nav-auth a:hover {
  color: var(--text-primary);
  background: var(--accent-soft);
  border-color: var(--border);
}

.nav-mobile-auth button,
.mobile-nav-auth button {
  text-align: left;
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  width: 100%;
}

.nav-mobile-auth button:hover,
.mobile-nav-auth button:hover {
  color: var(--text-primary);
  background: var(--accent-soft);
  border-color: var(--border);
}

/* ---- Auth page shell ---- */
.auth-shell {
  max-width: 440px;
  margin: 0 auto;
  padding: 0 20px 100px;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-metal);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(227, 231, 236, 0.06);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(
    135deg,
    rgba(227, 231, 236, 0.05) 0%,
    transparent 48%,
    rgba(200, 202, 208, 0.04) 100%
  );
  opacity: 0.85;
}

.auth-card-title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 6px;
  position: relative;
}

.auth-card-sub {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  position: relative;
  line-height: 1.5;
}

.auth-form {
  position: relative;
}

.auth-row-2 {
  display: grid;
  gap: 14px;
}

@media (min-width: 480px) {
  .auth-row-2 {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---- Feedback states ---- */
.auth-error {
  display: none;
  font-size: 0.82rem;
  color: #e0a3a3;
  background: rgba(200, 60, 60, 0.1);
  border: 1px solid rgba(200, 60, 60, 0.25);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 16px;
}

.auth-error.visible {
  display: block;
}

.auth-success {
  display: none;
  font-size: 0.82rem;
  color: #a9d3b5;
  background: rgba(70, 180, 100, 0.1);
  border: 1px solid rgba(70, 180, 100, 0.25);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 16px;
}

.auth-success.visible {
  display: block;
}

.auth-links {
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.auth-links a {
  color: var(--accent);
  font-weight: 550;
}

.auth-links a:hover {
  color: var(--text-primary);
}

/* ---- Verification / state panel ---- */
.auth-state-panel {
  display: none;
  text-align: center;
  position: relative;
}

.auth-state-panel.visible {
  display: block;
}

.auth-state-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid var(--border-metal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.auth-state-panel p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 18px;
}

.auth-state-panel strong {
  color: var(--text-primary);
}

/* ---- OTP verification ---- */
.otp-boxes {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 18px;
}

.otp-box {
  width: 44px;
  height: 54px;
  text-align: center;
  font-size: 1.4rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  padding: 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-metal);
  background: var(--bg-elevated);
  color: var(--text-primary);
  -webkit-appearance: none;
  appearance: none;
}

.otp-box:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.otp-box.otp-error {
  border-color: rgba(200, 60, 60, 0.5);
}

@media (max-width: 380px) {
  .otp-box {
    width: 38px;
    height: 48px;
    font-size: 1.2rem;
  }

  .otp-boxes {
    gap: 6px;
  }
}

.otp-meta {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 22px;
  line-height: 1.5;
}

.otp-meta strong {
  color: var(--text-primary);
}

.otp-resend-row {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 16px;
}

.otp-resend-row button {
  background: none;
  border: none;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.82rem;
  cursor: pointer;
  padding: 4px;
}

.otp-resend-row button:disabled {
  color: var(--text-muted);
  cursor: default;
}

.otp-change-email {
  text-align: center;
  margin-top: 10px;
}

.otp-change-email button {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.78rem;
  text-decoration: underline;
  cursor: pointer;
  padding: 4px;
}

/* ---- Password field with show/hide toggle ---- */
.pw-field {
  position: relative;
}

.pw-field input {
  padding-right: 46px;
}

.pw-toggle {
  position: absolute;
  top: 50%;
  right: 6px;
  transform: translateY(-50%);

  /* Reliable mobile touch target */
  width: 44px;
  height: 44px;

  display: flex;
  align-items: center;
  justify-content: center;

  background: transparent;
  border: none;
  border-radius: var(--radius-sm);

  color: var(--text-muted);
  cursor: pointer;
  padding: 0;

  /* Keep the button above the password input */
  z-index: 2;

  /* Explicitly make the button touchable */
  pointer-events: auto;

  /* Better Android/mobile interaction */
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.pw-toggle:hover,
.pw-toggle:focus-visible {
  color: var(--text-primary);
  background: var(--accent-soft);
}

.pw-toggle svg {
  width: 20px;
  height: 20px;
  display: block;

  /* Let the BUTTON receive the touch/click */
  pointer-events: none;
}

.pw-toggle .eye-off {
  display: none;
}

.pw-toggle[aria-pressed="true"] .eye-on {
  display: none;
}

.pw-toggle[aria-pressed="true"] .eye-off {
  display: block;
}

/* ---- Password strength meter ---- */
.pw-meter {
  height: 4px;
  border-radius: 4px;
  background: var(--border);
  overflow: hidden;
  margin-top: -10px;
  margin-bottom: 18px;
}

.pw-meter-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.25s ease, background 0.25s ease;
}

.pw-hint {
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: -12px;
  margin-bottom: 18px;
}

/* ---- Account page ---- */
.account-shell {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px 100px;
}

.account-header-card {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.account-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-metal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  flex-shrink: 0;
  overflow: hidden;
}

.account-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.account-identity h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.account-identity p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.account-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 4px 10px;
  border-radius: 999px;
  margin-top: 8px;
}

.account-badge.verified {
  background: rgba(70, 180, 100, 0.12);
  color: #a9d3b5;
  border: 1px solid rgba(70, 180, 100, 0.25);
}

.account-badge.unverified {
  background: rgba(200, 160, 40, 0.12);
  color: #d9be6e;
  border: 1px solid rgba(200, 160, 40, 0.25);
}

.account-grid {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

@media (min-width: 700px) {
  .account-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.account-loading {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.account-field-static {
  padding: 11px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.92rem;
}

[hidden] {
  display: none !important;
}

/* Learn journey-stats originally ships 3 cards (style.css); the 4th
   "Learner" identity card added here needs a 4-column row on desktop
   so it doesn't wrap onto its own line. Scoped override only — style.css
   itself is untouched. */
@media (min-width: 700px) {
  .journey-stats {
    grid-template-columns: repeat(4, 1fr);
  }
   }