/* PandaSlice Components
   Reusable UI components and patterns */

/* ================================
   HEADER COMPONENTS
   ================================ */

/* Site Header */
.site-header {
  position: sticky;
  top: 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
  gap: var(--spacing-lg);
}

/* Site Branding */
.site-branding {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.site-logo {
  display: block;
  height: 40px;
  width: auto;
}

.site-name {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-gray-900);
}

.site-tagline {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
}

/* Main Navigation */
.main-navigation {
  display: none;
}

@media (min-width: 1024px) {
  .main-navigation {
    display: block;
  }
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-link {
  font-weight: 500;
  color: var(--color-gray-700);
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-item.current-page .nav-link {
  color: var(--color-primary);
  background: var(--color-gray-50);
}

/* Header CTA */
.header-cta {
  display: none;
}

@media (min-width: 1024px) {
  .header-cta {
    display: block;
  }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  transition: background var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background: var(--color-gray-100);
}

@media (min-width: 1024px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.hamburger-line {
  width: 100%;
  height: 2px;
  background: var(--color-gray-700);
  margin: 2px 0;
  transition: all var(--transition-fast);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-content {
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: var(--spacing-lg);
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
}

.site-logo-mobile {
  height: 34px;
  width: auto;
}

.mobile-menu-close {
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  transition: background var(--transition-fast);
}

.mobile-menu-close:hover {
  background: var(--color-gray-100);
}

/* Mobile Navigation */
.mobile-nav-menu {
  list-style: none;
  margin-bottom: var(--spacing-xl);
}

.mobile-nav-item {
  margin-bottom: var(--spacing-sm);
}

.mobile-nav-link {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--color-gray-700);
  text-decoration: none;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.current-page {
  color: var(--color-primary);
  background: var(--color-gray-50);
}

.mobile-cta {
  margin-top: auto;
}

/* ================================
   BUTTON COMPONENTS
   ================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-family: inherit;
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

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

/* Button Sizes */
.btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  min-height: 44px;
}

.btn--small {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.btn--large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

/* Button Variants */
.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background: var(--color-gray-100);
  color: var(--color-gray-900);
  border: 1px solid var(--color-gray-300);
}

.btn--secondary:hover {
  background: var(--color-gray-200);
  border-color: var(--color-gray-400);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--ghost {
  background: transparent;
  color: var(--color-gray-700);
}

.btn--ghost:hover {
  background: var(--color-gray-100);
}

/* Button States */
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* Mobile Button Adjustments */
.btn--mobile {
  width: 100%;
}

.btn--header {
  font-size: var(--font-size-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  min-height: 40px;
}

/* ================================
   FOOTER COMPONENTS
   ================================ */

.site-footer {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  margin-top: var(--spacing-4xl);
}

.footer-container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-md) var(--spacing-lg);
}

.footer-content {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 640px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-content {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-2xl);
  }
}

.footer-section-title {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

/* Footer Company Section */
.footer-branding {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.footer-logo {
  height: 40px;
  width: auto;
}

.footer-company-name {
  color: var(--color-white);
  font-size: var(--font-size-xl);
  font-weight: 600;
}

.footer-tagline {
  color: var(--color-gray-400);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.footer-description {
  line-height: var(--line-height-relaxed);
}

/* Footer Navigation */
.footer-nav {
  list-style: none;
}

.footer-nav li {
  margin-bottom: var(--spacing-sm);
}

.footer-link {
  color: var(--color-gray-300);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-white);
}

/* Contact Info */
.contact-info {
  margin-bottom: var(--spacing-lg);
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

@media (min-width: 640px) {
  .contact-item {
    flex-direction: row;
    align-items: center;
  }
}

.contact-label {
  color: var(--color-gray-400);
  font-weight: 500;
  min-width: 80px;
}

.contact-link {
  color: var(--color-gray-300);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.contact-link:hover {
  color: var(--color-white);
}

.contact-text {
  color: var(--color-gray-300);
}

/* Social Links */
.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-gray-400);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
}

.social-link:hover {
  color: var(--color-white);
  background: var(--color-gray-800);
}

.social-icon {
  width: 20px;
  height: 20px;
}

/* Newsletter Section */
.footer-newsletter {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.newsletter-content {
  max-width: 500px;
}

.newsletter-title {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.newsletter-description {
  color: var(--color-gray-400);
  margin-bottom: var(--spacing-lg);
}

.newsletter-form {
  margin-bottom: var(--spacing-md);
}

.newsletter-input-group {
  display: flex;
  gap: var(--spacing-sm);
}

@media (max-width: 640px) {
  .newsletter-input-group {
    flex-direction: column;
  }
}

.newsletter-input {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-gray-700);
  border-radius: var(--border-radius-md);
  background: var(--color-gray-800);
  color: var(--color-white);
  font-size: var(--font-size-base);
}

.newsletter-input::placeholder {
  color: var(--color-gray-500);
}

.newsletter-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.newsletter-submit {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--border-radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast);
  white-space: nowrap;
}

.newsletter-submit:hover {
  background: var(--color-primary-dark);
}

.newsletter-message {
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-sm);
}

.newsletter-message.success {
  color: var(--color-success);
}

.newsletter-message.error {
  color: var(--color-error);
}

/* Footer Bottom */
.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--spacing-lg);
}

.footer-bottom-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom-content {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-copyright {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

.footer-legal {
  display: flex;
  gap: var(--spacing-lg);
}

.legal-link {
  color: var(--color-gray-500);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.legal-link:hover {
  color: var(--color-gray-300);
}

/* Back to Top */
.back-to-top-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-gray-800);
  color: var(--color-gray-400);
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.back-to-top-btn:hover {
  background: var(--color-gray-700);
  color: var(--color-white);
}

.back-to-top-icon {
  width: 20px;
  height: 20px;
}

/* ================================
   FORM COMPONENTS
   ================================ */

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

.form-label {
  display: block;
  font-weight: 500;
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-sm);
}

.form-label.required::after {
  content: " *";
  color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius-md);
  background: var(--color-white);
  color: var(--color-gray-900);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

.form-help {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

/* ================================
   CARD COMPONENTS
   ================================ */

.card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-gray-200);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-xs);
}

.card-subtitle {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
}

.card-content {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-gray-50);
}

/* ================================
   ALERT COMPONENTS
   ================================ */

.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  border: 1px solid;
  margin-bottom: var(--spacing-md);
}

.alert-success {
  background: rgb(16 185 129 / 0.1);
  border-color: var(--color-success);
  color: #065f46;
}

.alert-warning {
  background: rgb(245 158 11 / 0.1);
  border-color: var(--color-warning);
  color: #92400e;
}

.alert-error {
  background: rgb(239 68 68 / 0.1);
  border-color: var(--color-error);
  color: #991b1b;
}

.alert-info {
  background: rgb(37 99 235 / 0.1);
  border-color: var(--color-primary);
  color: #1e40af;
}

/* ================================
   RESPONSIVE UTILITIES
   ================================ */

@media (max-width: 640px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 641px) {
  .show-mobile {
    display: none !important;
  }
}

@media (max-width: 1023px) {
  .hide-tablet {
    display: none !important;
  }
}

@media (min-width: 1024px) {
  .show-tablet {
    display: none !important;
  }
}

@media (max-width: 1279px) {
  .hide-desktop {
    display: none !important;
  }
}

@media (min-width: 1280px) {
  .show-desktop {
    display: none !important;
  }
}