/**
 * NAS Authentication Styles - Login and registration forms
 * Requires: nas-base.css
 * Version: 1.0.0 - Production
 */

/* ===== AUTHENTICATION LAYOUT ===== */
.auth-container {
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  background: transparent;
  padding-top: calc(var(--navbar-height) + var(--spacing-lg));
}

/* ===== AUTHENTICATION FORM ===== */
.auth-form {
  max-width: 450px;
  width: 100%;
  background-color: var(--color-bg-card-transparent);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-heavy);
  backdrop-filter: blur(15px);
  padding: var(--spacing-xl);
  color: var(--color-text-primary);/
  padding-bottom: var(--spacing-xl);
}

/* ===== AUTHENTICATION TABS ===== */
.auth-tabs {
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: var(--spacing-lg);
  background: transparent;
}

.auth-tabs .nav-link {
  color: var(--color-text-secondary);
  border: none;
  border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
  padding: var(--spacing-md) 0;
  font-weight: 600;
  text-decoration: none;
  position: relative;
  transition: all var(--transition-fast);
  background: transparent;
}

.auth-tabs .nav-link.active {
  color: var(--color-primary);
  background: var(--color-bg-overlay-light);
  border: 1px solid var(--color-border);
  border-bottom: 3px solid var(--color-primary);
}

.auth-tabs .nav-link:hover {
  color: var(--color-primary);
  background: var(--color-bg-overlay-light);
}

/* ===== FORM ELEMENTS ===== */
.auth-form .form-control,
.auth-form .form-select {
  background-color: var(--color-bg-overlay-light);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
  height: 48px;
  min-height: 48px;
}

.auth-form .form-control:focus,
.auth-form .form-select:focus {
  background-color: var(--color-bg-card-transparent);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.25rem rgba(29, 185, 84, 0.25);
  color: var(--color-text-primary);
}

.auth-form .form-control::placeholder {
  color: var(--color-text-placeholder);
}

.auth-form .form-label {
  color: var(--color-text-primary);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.auth-form .form-check-label {
  color: var(--color-text-primary);
  font-size: 0.875rem;
}

/* ===== PASSWORD FIELD ===== */
.password-field {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
}

.password-field input {
  flex: 1;
}

.toggle-password,
.btn-outline-secondary {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  width: 48px;
  min-width: 48px;
  min-height: 48px;
  background-color: var(--color-bg-overlay-light);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  color: var(--color-text-secondary);
  flex-shrink: 0;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
}

.toggle-password:hover,
.btn-outline-secondary:hover {
  background-color: var(--color-bg-card-transparent);
  color: var(--color-text-primary);
  border-color: var(--color-border-focus);
}

.toggle-password:focus,
.btn-outline-secondary:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== PASSWORD REQUIREMENTS ===== */
.password-requirements {
  background-color: var(--color-bg-overlay-light);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  margin-top: var(--spacing-sm);
  font-size: 0.875rem;
  backdrop-filter: blur(10px);
}

.password-requirements h6,
.password-requirements p {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.password-requirements ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.password-requirements li {
  padding: var(--spacing-xs) 0;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.password-requirements li.text-success {
  color: var(--color-success);
}

.password-requirements li::before {
  content: "×";
  margin-right: var(--spacing-sm);
  color: var(--color-error);
  font-weight: bold;
}

.password-requirements li.text-success::before {
  content: "✓";
  color: var(--color-success);
}

/* ===== PASSWORD STRENGTH METER ===== */
.password-strength-container {
  margin-top: var(--spacing-sm);
}

.password-strength-meter,
.progress {
  height: 4px;
  background-color: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: var(--spacing-xs);
}

.password-strength-meter .progress-bar,
.progress-bar {
  height: 100%;
  transition: width var(--transition-normal);
}

.password-strength-text {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* ===== FORM VALIDATION ===== */
.form-control.is-valid {
  border-color: var(--color-success);
}

.form-control.is-invalid {
  border-color: var(--color-error);
}

.form-control.is-valid:focus {
  border-color: var(--color-success);
  box-shadow: 0 0 0 0.25rem rgba(40, 167, 69, 0.25);
}

.form-control.is-invalid:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 0.25rem rgba(255, 82, 82, 0.25);
}

.valid-feedback,
.invalid-feedback {
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
}

.valid-feedback {
  color: var(--color-success);
}

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

#password-match-message {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

#password-match-message.text-success {
  color: var(--color-success);
}

#password-match-message.text-danger {
  color: var(--color-error);
}

/* ===== BUTTONS ===== */
.btn-submit,
.btn-primary {
  background-color: var(--color-primary) !important;
  color: var(--color-text-primary);
  border: none;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  font-weight: 600;
  width: 100%;
  transition: all var(--transition-fast);
  min-height: 48px;
  margin-bottom: 0;
}

.btn-submit:hover,
.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  color: var(--color-text-primary);
}

.btn-submit:focus,
.btn-primary:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-submit:disabled,
.btn-primary:disabled {
  background-color: var(--color-text-muted);
  cursor: not-allowed;
  transform: none;
  opacity: 0.6;
}

/* ===== LINKS ===== */
.forgot-link,
.register-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.forgot-link:hover,
.register-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* ===== DIVIDER ===== */
.divider {
  display: flex;
  align-items: center;
  margin: var(--spacing-lg) 0;
}

.divider::before,
.divider::after {
  content: "";
  flex: 1;
  border-bottom: 1px solid var(--color-border-light);
}

.divider span {
  padding: 0 var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  background-color: transparent;
}

/* ===== CHECKBOX & RADIO ===== */
.form-check {
  margin-bottom: var(--spacing-md);
}

.form-check-input {
  margin-right: var(--spacing-sm);
  background-color: var(--color-bg-overlay-light);
  border: 1px solid var(--color-border);
}

.form-check-input:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.form-check-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.25rem rgba(29, 185, 84, 0.25);
}

/* ===== ALERT MESSAGES ===== */
.alert {
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border: 1px solid transparent;
  backdrop-filter: blur(10px);
}

.auth-message {
  margin-bottom: var(--spacing-md);
}

.alert-success,
.auth-message.alert-success {
  background-color: var(--color-bg-card-transparent);
  border-color: var(--color-success);
  color: var(--color-success);
  border-left: 4px solid var(--color-success);
}

.alert-danger,
.auth-message.alert-danger {
  background-color: var(--color-bg-card-transparent);
  border-color: var(--color-error);
  color: var(--color-error);
  border-left: 4px solid var(--color-error);
}

.alert-info,
.auth-message.alert-info {
  background-color: var(--color-bg-card-transparent);
  border-color: var(--color-info);
  color: var(--color-info);
  border-left: 4px solid var(--color-info);
}

.alert-warning {
  background-color: var(--color-bg-card-transparent);
  border-color: #ffc107;
  color: #ffc107;
  border-left: 4px solid #ffc107;
}

/* ===== LOADING STATES ===== */
.btn-loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn-loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  margin-left: -10px;
  margin-top: -10px;
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: var(--border-radius-circle);
  animation: spin 1s linear infinite;
}

.btn-submit.btn-loading::after {
  border-top-color: var(--color-text-primary);
}

/* ===== TOOLTIPS ===== */
.password-requirements-tooltip .tooltip-inner {
  max-width: 300px;
  text-align: left;
  padding: var(--spacing-sm);
  background-color: var(--color-bg-card);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

/* ===== HEADERS AND TEXT ===== */
.auth-form h2 {
  color: var(--color-text-primary);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

/* ===== TAB CONTENT SPACING ===== */
.tab-content {
  min-height: 380px;
  position: relative;
}

.tab-pane {
  opacity: 0;
  visibility: hidden;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  transition: opacity var(--transition-fast);
}

.tab-pane.active {
  opacity: 1;
  visibility: visible;
  position: relative;
  padding-bottom: 0;
}

/* ===== FORM SPACING FIXES ===== */
/* Last form element spacing */
.auth-form .tab-content .btn-submit:last-child {
  margin-bottom: 0;
}

/* Remove any extra spacing after forms */
.auth-form form:last-child {
  margin-bottom: 0;
}

.auth-form .mb-3:last-child {
  margin-bottom: 0;
}

/* Remove any debug-specific margins */
.auth-form .debug-btn,
.auth-form .btn-outline-info {
  display: none !important;
}

/* Clean up button container */
.auth-form .mt-2 {
  margin-top: 0 !important;
}

/* Tighten form spacing */
.auth-form .row:last-child .col-12:last-child {
  margin-bottom: 0;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 576px) {
  .auth-container {
    padding: var(--spacing-md);
    padding-top: calc(var(--navbar-height) + var(--spacing-md));
  }

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

  .form-control,
  .btn-submit {
    padding: var(--spacing-sm);
    height: 48px;
    min-height: 48px;
  }

  .auth-tabs .nav-link {
    padding: var(--spacing-sm) 0;
    font-size: 0.875rem;
  }

  .toggle-password,
  .btn-outline-secondary {
    height: 48px;
    width: 48px;
    min-width: 48px;
    min-height: 48px;
  }

  .password-field {
    flex-direction: row;
    align-items: center;
  }
  
  .tab-content {
    min-height: 320px;
  }
}

@media (max-height: 700px) {
  .auth-container {
    padding-top: calc(var(--navbar-height) + var(--spacing-lg));
    align-items: flex-start;
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  .btn-submit,
  .form-control,
  .toggle-password,
  .nav-link {
    transition: none;
  }

  .btn-loading::after {
    animation: none;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .auth-form {
    border: 2px solid var(--color-text-primary);
  }

  .form-control {
    border-width: 2px;
  }

  .toggle-password {
    border-width: 2px;
  }
}

/* Focus management for keyboard navigation */
.auth-form *:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== ANIMATIONS ===== */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.auth-form {
  animation: fadeInUp 0.5s ease-out;
}

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