/* =========================================
3. AUTH LAYOUT (SPLIT SCREEN)
========================================= */
.premium-auth-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

.auth-wrapper {
  width: 100%;
  max-width: var(--container-width);
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  overflow: hidden;
  min-height: 700px;
}

/* Left: Visual Side */
.auth-visual {
  flex: 1;
  position: relative;
  background: url("https://images.unsplash.com/photo-1441986300917-64674bd600d8?q=80&w=1200&auto=format&fit=crop")
    center/cover no-repeat;
  /* background: linear-gradient(135deg, var(--primary) 0%, #2a1f5c 100%); */
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-xl);
  color: var(--white);
  overflow: hidden;
}

.visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgb(21 11 63 / 19%) 0%,
    rgba(13, 6, 38, 0.92) 100%
  );
}

.visual-content {
  position: relative;
  z-index: 2;
  max-width: 420px;
}

.brand-signature {
  font-family: var(--font-accent);
  font-size: var(--fs-3xl);
  color: var(--secondary);
  margin-bottom: var(--space-sm);
  font-weight: var(--fw-normal);
}

.visual-headline {
  font-family: var(--font-primary);
  font-size: var(--fs-4xl);
  line-height: var(--lh-sm);
  margin: 0 0 var(--space-sm) 0;
  font-weight: var(--fw-normal);
  color: var(--white);
}

.visual-subtext {
  font-size: var(--fs-md);
  color: var(--gray-300);
  line-height: var(--lh-md);
  margin: 0;
  font-weight: var(--fw-light);
}

/* Right: Form Side */
.auth-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  background: var(--white);
}

.auth-container {
  width: 100%;
  max-width: 420px;
}

/* =========================================
           4. TYPOGRAPHY & TABS
        ========================================= */
.auth-header {
  margin-bottom: var(--space-lg);
}

.auth-title {
  font-family: var(--font-primary);
  font-size: var(--fs-3xl);
  color: var(--primary);
  margin: 0 0 var(--space-xs) 0;
  font-weight: var(--fw-normal);
}

.auth-subtitle {
  color: var(--gray-500);
  font-size: var(--fs-sm);
  margin: 0;
}

.auth-tabs {
  display: flex;
  gap: var(--space-lg);
  border-bottom: 1px solid var(--gray-200);
  margin-bottom: var(--space-lg);
}

.tab-btn {
  background: none;
  border: none;
  padding: 0 0 var(--space-sm) 0;
  font-family: var(--font-secondary);
  font-size: var(--fs-md);
  font-weight: var(--fw-medium);
  color: var(--gray-400);
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.tab-btn::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}

.tab-btn:hover {
  color: var(--primary);
}

.tab-btn.active {
  color: var(--primary);
  font-weight: var(--fw-semibold);
}

.tab-btn.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* =========================================
           5. FORM ELEMENTS
        ========================================= */
.auth-form {
  display: none;
  animation: fadeIn 0.4s ease forwards;
}

.auth-form.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--gray-900);
  margin-bottom: var(--space-xs);
}

.forgot-link {
  font-size: var(--fs-xs);
  color: var(--secondary);
  text-decoration: none;
  font-weight: var(--fw-medium);
  transition: var(--transition);
}

.forgot-link:hover {
  color: var(--primary);
}

input[type="text"],
input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-family: var(--font-secondary);
  font-size: var(--fs-sm);
  color: var(--gray-900);
  background: var(--gray-100);
  transition: var(--transition);
  outline: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* Checkbox */
.form-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.form-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
}

.form-checkbox label {
  margin: 0;
  color: var(--gray-600);
  font-weight: var(--fw-normal);
  cursor: pointer;
}

/* Submit Button */
.btn-submit {
  width: 100%;
  background: var(--primary);
  color: var(--white);
  border: none;
  padding: 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-secondary);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.btn-submit:hover {
  background: var(--black);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Form Footer Terms */
.form-terms {
  margin-top: var(--space-md);
  font-size: var(--fs-xs);
  color: var(--gray-500);
  text-align: center;
  line-height: var(--lh-md);
}

.form-terms a {
  color: var(--primary);
  text-decoration: underline;
}

/* =========================================
           6. RESPONSIVE DESIGN
        ========================================= */
@media (max-width: 900px) {
  .auth-visual {
    padding: var(--space-lg);
  }
  .visual-headline {
    font-size: var(--fs-3xl);
  }
  .auth-panel {
    padding: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .auth-wrapper {
    flex-direction: column;
    min-height: auto;
  }

  .auth-visual {
    flex: none;
    padding: var(--space-lg) var(--space-md);
    min-height: 220px;
    justify-content: center;
    text-align: center;
  }

  .visual-content {
    margin: 0 auto;
  }
  .auth-panel {
    padding: var(--space-xl) var(--space-md);
  }
}