/* ═══════════════════════════════════════════════════════════
   KYNK - AUTHENTICATION PAGES
   Login & Signup page styling
   ═══════════════════════════════════════════════════════════ */

/* ═══ AUTH PAGE LAYOUT ═══ */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--body-bg) 0%, var(--card-bg) 100%);
}

.auth-container {
  width: 100%;
  max-width: 450px;
}

/* ═══ AUTH CARD ═══ */
.auth-card {
  background-color: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-2xl);
  animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ═══ LOGO & HEADER ═══ */
.auth-logo {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.auth-logo h1 {
  font-family: var(--font-heading);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--oxblood);
  margin-bottom: var(--spacing-xs);
  letter-spacing: 2px;
}

.auth-logo p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
}

.auth-tagline {
  text-align: center;
  font-size: var(--font-size-base);
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  font-weight: var(--font-weight-medium);
}

/* ═══ AUTH FORMS ═══ */
.auth-form {
  margin-bottom: var(--spacing-lg);
}

.auth-form .form-group {
  margin-bottom: var(--spacing-lg);
}

.auth-form .form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.auth-form .form-control {
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
  transition: all var(--transition-base);
}

.auth-form .form-control:focus {
  border-color: var(--oxblood);
  box-shadow: 0 0 0 4px rgba(128, 0, 32, 0.1);
  transform: translateY(-2px);
}

.auth-form .form-control::placeholder {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* ═══ PASSWORD TOGGLE ═══ */
.password-field {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--font-size-lg);
  padding: var(--spacing-xs);
  transition: color var(--transition-fast);
}

.password-toggle:hover {
  color: var(--oxblood);
}

/* ═══ SUBMIT BUTTON ═══ */
.auth-form .btn-primary {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-md);
  background: linear-gradient(135deg, var(--oxblood) 0%, var(--oxblood-dark) 100%);
  border: none;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.auth-form .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.auth-form .btn-primary:active {
  transform: translateY(-1px);
}

/* ═══ FORM TEXT & LINKS ═══ */
.auth-links {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
}

.auth-links a {
  color: var(--oxblood);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

.auth-links a:hover {
  color: var(--oxblood-light);
  text-decoration: underline;
}

.remember-me {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--text-primary);
}

.remember-me input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--oxblood);
}

/* ═══ DIVIDER ═══ */
.auth-divider {
  display: flex;
  align-items: center;
  margin: var(--spacing-xl) 0;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

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

.auth-divider span {
  padding: 0 var(--spacing-md);
}

/* ═══ SWITCH AUTH TYPE ═══ */
.auth-switch {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  margin-top: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.auth-switch a {
  color: var(--oxblood);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  margin-left: var(--spacing-xs);
}

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

/* ═══ AGE VERIFICATION (Signup) ═══ */
.age-verification {
  background-color: rgba(128, 0, 32, 0.05);
  border: 1px solid rgba(128, 0, 32, 0.2);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--text-primary);
}

.age-verification strong {
  color: var(--oxblood);
}

/* ═══ FORM VALIDATION STATES ═══ */
.form-control.is-invalid {
  border-color: var(--danger);
  animation: shake 0.3s;
}

.form-control.is-valid {
  border-color: var(--success);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

.form-error {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--danger);
  animation: slideIn var(--transition-base);
}

.form-error::before {
  content: '⚠';
  font-size: var(--font-size-base);
}

/* ═══ PASSWORD STRENGTH INDICATOR ═══ */
.password-strength {
  margin-top: var(--spacing-sm);
  height: 4px;
  background-color: var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.password-strength-bar {
  height: 100%;
  width: 0;
  transition: all var(--transition-base);
  border-radius: var(--radius-full);
}

.password-strength-bar.weak {
  width: 33%;
  background-color: var(--danger);
}

.password-strength-bar.medium {
  width: 66%;
  background-color: var(--warning);
}

.password-strength-bar.strong {
  width: 100%;
  background-color: var(--success);
}

.password-strength-text {
  font-size: var(--font-size-xs);
  margin-top: var(--spacing-xs);
  color: var(--text-secondary);
}

/* ═══ DARK MODE ADJUSTMENTS ═══ */
body.dark-mode .age-verification {
  background-color: rgba(128, 0, 32, 0.1);
  border-color: rgba(128, 0, 32, 0.3);
}

body.dark-mode .auth-card {
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* ═══ RESPONSIVE ═══ */
@media (max-width: 640px) {
  .auth-page {
    padding: var(--spacing-md);
  }

  .auth-card {
    padding: var(--spacing-xl);
  }

  .auth-logo h1 {
    font-size: var(--font-size-3xl);
  }

  .auth-links {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-start;
  }
}