/* ============================================
   G.R.I.P. Platform — Auth (Login / Signup)
   ============================================ */

/* ---- Auth Page Background ---- */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
}

/* Subtle grid pattern background */
.auth-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30, 30, 46, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 30, 46, 0.3) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

/* Radial glow behind the card */
.auth-page::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

/* ---- Auth Card ---- */
.auth-card {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
  animation: fadeIn 0.4s ease, slideUp 0.4s ease;
}

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

.auth-card__logo-text {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-accent);
  letter-spacing: 0.15em;
  text-shadow: var(--text-glow-cyan);
}

.auth-card__logo-sub {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-top: var(--space-1);
}

.auth-card__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  text-align: center;
  margin-bottom: var(--space-2);
}

.auth-card__subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-6);
}

.auth-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-6);
  font-style: italic;
  opacity: 0.8;
}

/* ---- Auth Form ---- */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.auth-form .input-group {
  gap: var(--space-2);
}

.auth-form .input {
  padding: var(--space-3) var(--space-4);
}

.auth-form__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.auth-form__forgot {
  text-align: right;
  margin-top: calc(-1 * var(--space-2));
}

.auth-form__forgot a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: var(--transition-color);
}

.auth-form__forgot a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* ---- Form Validation ---- */
.input--valid {
  border-color: var(--color-success);
}

.input--valid:focus {
  box-shadow: var(--glow-success);
}

.input--invalid {
  border-color: var(--color-error);
}

.input--invalid:focus {
  box-shadow: var(--glow-error);
}

.validation-msg {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  margin-top: var(--space-1);
}

.validation-msg--error {
  color: var(--color-error);
}

.validation-msg--success {
  color: var(--color-success);
}

.validation-msg--info {
  color: var(--color-text-muted);
}

/* Password strength meter */
.password-strength {
  display: flex;
  gap: var(--space-1);
  margin-top: var(--space-2);
}

.password-strength__bar {
  flex: 1;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--color-border);
  transition: background 0.2s ease;
}

.password-strength--weak .password-strength__bar:nth-child(1) {
  background: var(--color-error);
}

.password-strength--fair .password-strength__bar:nth-child(-n+2) {
  background: var(--color-warning);
}

.password-strength--good .password-strength__bar:nth-child(-n+3) {
  background: var(--color-accent);
}

.password-strength--strong .password-strength__bar {
  background: var(--color-success);
}

/* ---- Divider with text ---- */
.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

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

.auth-divider__text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ---- Auth Footer ---- */
.auth-footer {
  text-align: center;
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

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

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

/* ---- Auth Alerts ---- */
.auth-alert {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.auth-alert--error {
  background: var(--color-error-dim);
  border: 1px solid rgba(255, 64, 96, 0.3);
  color: var(--color-error);
}

.auth-alert--success {
  background: var(--color-success-dim);
  border: 1px solid rgba(0, 255, 136, 0.3);
  color: var(--color-success);
}

/* ---- Responsive ---- */
@media (max-width: 480px) {
  .auth-page {
    padding: var(--space-4);
  }

  .auth-card {
    padding: var(--space-6) var(--space-5);
  }
}