/* ptc-components.css */

/* 1. Skip Link */
.ptc-skip-link {
  position: absolute;
  top: -100%;
  left: var(--ptc-space-4);
  z-index: var(--ptc-z-toast);
  padding: var(--ptc-space-2) var(--ptc-space-4);
  background: var(--ptc-accent);
  color: var(--ptc-white);
  border-radius: var(--ptc-radius-sm);
  font-size: var(--ptc-font-sm);
  transition: top var(--ptc-transition);
}

.ptc-skip-link:focus {
  top: var(--ptc-space-2);
}

/* 2. Header */
.ptc-header {
  background-color: var(--ptc-bg-primary);
  border-bottom: 1px solid var(--ptc-border-light);
  position: sticky;
  top: 0;
  z-index: var(--ptc-z-sticky);
}

.ptc-header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--ptc-content-max);
  margin: 0 auto;
  padding: 0 var(--ptc-space-4);
}

.ptc-header__logo {
  text-decoration: none;
  font-weight: var(--ptc-font-bold);
  font-size: var(--ptc-font-xl);
  color: var(--ptc-accent);
  display: flex;
  align-items: center;
}

.ptc-header__toggle {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--ptc-space-2);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ptc-header__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--ptc-text-primary);
  transition: transform var(--ptc-transition), opacity var(--ptc-transition);
}

.ptc-header__nav {
  display: none;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background-color: var(--ptc-bg-primary);
  border-bottom: 1px solid var(--ptc-border-light);
  padding: var(--ptc-space-4);
  box-shadow: var(--ptc-shadow-md);
}

.ptc-header__nav--visible {
  display: block;
}

.ptc-header__nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--ptc-space-4);
  padding-left: 0;
  list-style: none;
  margin-bottom: 0;
}

.ptc-header__nav-link {
  text-decoration: none;
  color: var(--ptc-text-secondary);
  font-weight: var(--ptc-font-medium);
  font-size: var(--ptc-font-md);
  transition: color var(--ptc-transition);
  display: block;
  padding: var(--ptc-space-2) 0;
}

.ptc-header__nav-link:hover {
  color: var(--ptc-accent);
}

@media (min-width: 768px) {
  .ptc-header__toggle {
    display: none;
  }

  .ptc-header__nav {
    display: block;
    position: static;
    border-bottom: none;
    box-shadow: none;
    padding: 0;
  }

  .ptc-header__nav-list {
    flex-direction: row;
    gap: var(--ptc-space-6);
  }

  .ptc-header__nav-link {
    padding: 0;
  }
}

/* 3. Hero Section */
.ptc-hero {
  background-color: var(--ptc-bg-secondary);
  padding: var(--ptc-space-12) 0;
  text-align: center;
  border-bottom: 1px solid var(--ptc-border-light);
}

.ptc-hero__container {
  max-width: var(--ptc-content-narrow);
  margin: 0 auto;
  padding: 0 var(--ptc-space-4);
}

.ptc-hero__heading {
  font-size: var(--ptc-font-4xl);
  margin-bottom: var(--ptc-space-3);
  color: var(--ptc-text-primary);
}

.ptc-hero__subheading {
  font-size: var(--ptc-font-lg);
  color: var(--ptc-text-secondary);
  line-height: var(--ptc-leading-relaxed);
  margin-bottom: 0;
}

/* 4. Content Section */
.ptc-section {
  padding: var(--ptc-space-12) 0;
}

.ptc-section__container {
  max-width: var(--ptc-content-max);
  margin: 0 auto;
  padding: 0 var(--ptc-space-4);
}

.ptc-section__container--narrow {
  max-width: var(--ptc-content-narrow);
}

.ptc-section__heading {
  font-size: var(--ptc-font-2xl);
  margin-bottom: var(--ptc-space-4);
  color: var(--ptc-text-primary);
}

.ptc-section__text {
  font-size: var(--ptc-font-base);
  color: var(--ptc-text-secondary);
  line-height: var(--ptc-leading-relaxed);
}

/* 5. Card Grid */
.ptc-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ptc-space-6);
  margin: var(--ptc-space-8) 0;
}

@media (min-width: 768px) {
  .ptc-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .ptc-card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.ptc-card {
  background-color: var(--ptc-bg-primary);
  border: 1px solid var(--ptc-border-light);
  border-radius: var(--ptc-radius-md);
  padding: var(--ptc-space-6);
  box-shadow: var(--ptc-shadow-sm);
  transition: transform var(--ptc-transition), box-shadow var(--ptc-transition);
}

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

.ptc-card__heading {
  font-size: var(--ptc-font-xl);
  margin-top: 0;
  margin-bottom: var(--ptc-space-3);
  color: var(--ptc-text-primary);
}

.ptc-card__text {
  margin-bottom: 0;
  font-size: var(--ptc-font-sm);
}

/* 6. Breadcrumbs */
.ptc-breadcrumbs {
  margin-bottom: var(--ptc-space-6);
}

.ptc-breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  padding-left: 0;
  margin-bottom: 0;
  font-size: var(--ptc-font-sm);
}

.ptc-breadcrumbs__item {
  display: flex;
  align-items: center;
  color: var(--ptc-text-muted);
}

.ptc-breadcrumbs__item + .ptc-breadcrumbs__item::before {
  content: "/";
  display: inline-block;
  margin: 0 var(--ptc-space-2);
  color: var(--ptc-gray-400);
}

.ptc-breadcrumbs__link {
  color: var(--ptc-accent);
  text-decoration: none;
}

.ptc-breadcrumbs__link:hover {
  text-decoration: underline;
}

.ptc-breadcrumbs__current {
  color: var(--ptc-text-secondary);
  font-weight: var(--ptc-font-medium);
}

/* 7. Forms & Buttons */
.ptc-form {
  background-color: var(--ptc-bg-primary);
  border: 1px solid var(--ptc-border);
  border-radius: var(--ptc-radius-lg);
  padding: var(--ptc-space-6);
  box-shadow: var(--ptc-shadow-md);
}

.ptc-form__fieldset {
  border: none;
  padding: 0;
  margin: 0;
}

.ptc-form__legend {
  font-size: var(--ptc-font-2xl);
  font-weight: var(--ptc-font-bold);
  color: var(--ptc-text-primary);
  margin-bottom: var(--ptc-space-6);
}

.ptc-form__group {
  margin-bottom: var(--ptc-space-5);
  display: flex;
  flex-direction: column;
}

.ptc-form__label {
  font-size: var(--ptc-font-sm);
  font-weight: var(--ptc-font-medium);
  color: var(--ptc-text-secondary);
  margin-bottom: var(--ptc-space-2);
}

.ptc-form__input,
.ptc-form__select,
.ptc-form__textarea {
  width: 100%;
  padding: var(--ptc-space-3);
  border: 1px solid var(--ptc-border);
  border-radius: var(--ptc-radius-md);
  font-size: var(--ptc-font-base);
  color: var(--ptc-text-primary);
  background-color: var(--ptc-white);
  transition: border-color var(--ptc-transition);
}

.ptc-form__input:focus,
.ptc-form__select:focus,
.ptc-form__textarea:focus {
  border-color: var(--ptc-accent);
}

.ptc-form__error {
  font-size: var(--ptc-font-xs);
  color: var(--ptc-error);
  margin-top: var(--ptc-space-1);
  min-height: var(--ptc-space-4);
  display: block;
}

.ptc-button {
  display: inline-block;
  font-weight: var(--ptc-font-medium);
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  padding: var(--ptc-space-3) var(--ptc-space-6);
  font-size: var(--ptc-font-base);
  border-radius: var(--ptc-radius-md);
  border: 1px solid transparent;
  transition: background-color var(--ptc-transition), border-color var(--ptc-transition), color var(--ptc-transition);
  text-decoration: none;
}

.ptc-button--primary {
  background-color: var(--ptc-accent);
  color: var(--ptc-white);
}

.ptc-button--primary:hover {
  background-color: var(--ptc-accent-hover);
  color: var(--ptc-white);
}

.ptc-button--secondary {
  background-color: var(--ptc-bg-tertiary);
  color: var(--ptc-text-primary);
  border-color: var(--ptc-border);
}

.ptc-button--secondary:hover {
  background-color: var(--ptc-gray-200);
}

/* 8. Back-to-Top Button */
.ptc-back-to-top {
  position: fixed;
  bottom: var(--ptc-space-6);
  right: var(--ptc-space-6);
  z-index: var(--ptc-z-dropdown);
  width: 44px;
  height: 44px;
  border-radius: var(--ptc-radius-full);
  background-color: var(--ptc-accent);
  color: var(--ptc-white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--ptc-shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--ptc-transition), visibility var(--ptc-transition), background-color var(--ptc-transition);
}

.ptc-back-to-top:hover {
  background-color: var(--ptc-accent-hover);
}

.ptc-back-to-top--visible {
  opacity: 1;
  visibility: visible;
}

/* 9. Footer */
.ptc-footer {
  background-color: var(--ptc-bg-secondary);
  border-top: 1px solid var(--ptc-border-light);
  padding: var(--ptc-space-10) 0;
  margin-top: auto;
}

.ptc-footer__container {
  max-width: var(--ptc-content-max);
  margin: 0 auto;
  padding: 0 var(--ptc-space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--ptc-space-6);
}

.ptc-footer__nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--ptc-space-4);
  list-style: none;
  padding-left: 0;
  margin-bottom: 0;
}

.ptc-footer__nav-link {
  text-decoration: none;
  color: var(--ptc-text-secondary);
  font-size: var(--ptc-font-sm);
  transition: color var(--ptc-transition);
}

.ptc-footer__nav-link:hover {
  color: var(--ptc-accent);
}

.ptc-footer__copyright {
  font-size: var(--ptc-font-xs);
  color: var(--ptc-text-muted);
}

@media (min-width: 768px) {
  .ptc-footer__container {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* 10. Calculators Specific CSS */
.ptc-calculator {
  max-width: var(--ptc-content-calc);
  margin: var(--ptc-space-8) auto;
  border: 1px solid var(--ptc-border-light);
  border-radius: var(--ptc-radius-lg);
  background-color: var(--ptc-white);
  padding: var(--ptc-space-6);
  box-shadow: var(--ptc-shadow-lg);
}

@media (min-width: 768px) {
  .ptc-calculator {
    padding: var(--ptc-space-8);
  }
}

.ptc-calculator__heading {
  font-size: var(--ptc-font-2xl);
  margin-top: 0;
  margin-bottom: var(--ptc-space-8);
  color: var(--ptc-text-primary);
  text-align: center;
}

.ptc-calculator__grid {
  display: flex;
  flex-direction: column;
  gap: var(--ptc-space-6);
}

.ptc-input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.ptc-input-with-icon__symbol {
  position: absolute;
  left: var(--ptc-space-3);
  color: var(--ptc-text-muted);
  font-weight: var(--ptc-font-bold);
  pointer-events: none;
}

.ptc-input-with-icon input {
  padding-left: var(--ptc-space-7);
}

.ptc-results-section {
  display: none;
  margin-top: var(--ptc-space-6);
  background-color: var(--ptc-bg-secondary);
  border-radius: var(--ptc-radius-md);
  padding: var(--ptc-space-8);
  border: 1px solid var(--ptc-border);
  scroll-margin-top: 80px;
}

@media (min-width: 768px) {
  .ptc-results-section {
    margin-top: var(--ptc-space-8);
  }
}

.ptc-results-heading {
  font-size: var(--ptc-font-lg);
  color: var(--ptc-text-primary);
  margin-top: 0;
  margin-bottom: var(--ptc-space-4);
  font-weight: var(--ptc-font-bold);
  text-align: center;
}

.ptc-results-grid {
  display: flex;
  flex-direction: column;
  gap: var(--ptc-space-3);
}

.ptc-result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--ptc-space-2) 0;
  border-bottom: 1px solid var(--ptc-border-light);
}

.ptc-result-item:last-child {
  border-bottom: none;
}

.ptc-result-item__label {
  font-size: var(--ptc-font-sm);
  color: var(--ptc-text-secondary);
}

.ptc-result-item__value {
  font-weight: var(--ptc-font-bold);
  font-size: var(--ptc-font-md);
  color: var(--ptc-text-primary);
}

.ptc-result-item--highlight .ptc-result-item__label {
  font-weight: var(--ptc-font-bold);
  color: var(--ptc-text-primary);
}

.ptc-result-item--highlight .ptc-result-item__value {
  color: var(--ptc-success);
  font-size: var(--ptc-font-lg);
}

.ptc-overtime-toggle {
  margin-bottom: var(--ptc-space-4);
}

.ptc-form__radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ptc-space-6);
}

.ptc-form__radio-label {
  display: flex;
  align-items: center;
  gap: var(--ptc-space-2);
  font-size: var(--ptc-font-sm);
  cursor: pointer;
}

.ptc-button--block {
  width: 100%;
}

/* 11. Tables */
.ptc-table-wrapper {
  width: 100%;
  overflow-x: auto;
  margin: var(--ptc-space-6) 0;
  border: 1px solid var(--ptc-border-light);
  border-radius: var(--ptc-radius-md);
}

.ptc-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--ptc-font-sm);
}

.ptc-table th,
.ptc-table td {
  padding: var(--ptc-space-3) var(--ptc-space-4);
  border-bottom: 1px solid var(--ptc-border-light);
}

.ptc-table th {
  background-color: var(--ptc-bg-tertiary);
  color: var(--ptc-text-primary);
  font-weight: var(--ptc-font-bold);
}

.ptc-table tr:last-child td {
  border-bottom: none;
}

.ptc-table tr:nth-child(even) {
  background-color: var(--ptc-bg-secondary);
}

.ptc-table__caption {
  font-size: var(--ptc-font-xs);
  color: var(--ptc-text-muted);
  padding: var(--ptc-space-2) var(--ptc-space-4);
  text-align: right;
  caption-side: bottom;
}

/* 12. Frequently Asked Questions */
.ptc-faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--ptc-space-4);
  margin-top: var(--ptc-space-6);
}

.ptc-faq-item {
  background-color: var(--ptc-bg-secondary);
  border: 1px solid var(--ptc-border-light);
  border-radius: var(--ptc-radius-md);
  overflow: hidden;
  transition: box-shadow var(--ptc-transition);
}

.ptc-faq-item:hover {
  box-shadow: var(--ptc-shadow-sm);
}

.ptc-faq-item__details {
  width: 100%;
}

.ptc-faq-item__summary {
  padding: var(--ptc-space-4);
  font-weight: var(--ptc-font-bold);
  font-size: var(--ptc-font-md);
  color: var(--ptc-text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  outline: none;
}

.ptc-faq-item__summary::-webkit-details-marker {
  display: none;
}

.ptc-faq-item__summary::after {
  content: "+";
  font-size: var(--ptc-font-xl);
  color: var(--ptc-accent);
  transition: transform var(--ptc-transition);
}

.ptc-faq-item__details[open] .ptc-faq-item__summary::after {
  content: "\u2212";
}

.ptc-faq-item__content {
  padding: 0 var(--ptc-space-4) var(--ptc-space-4);
  font-size: var(--ptc-font-sm);
  line-height: var(--ptc-leading-relaxed);
  color: var(--ptc-text-secondary);
}

.ptc-faq-item__content p:last-child {
  margin-bottom: 0;
}

/* 13. Aside/Disclaimer Callouts */
.ptc-callout {
  background-color: var(--ptc-accent-light);
  border-left: 4px solid var(--ptc-accent);
  padding: var(--ptc-space-4);
  border-radius: 0 var(--ptc-radius-md) var(--ptc-radius-md) 0;
  margin: var(--ptc-space-6) 0;
  font-size: var(--ptc-font-sm);
  color: var(--ptc-text-secondary);
}

.ptc-callout--success {
  background-color: var(--ptc-success-light);
  border-left-color: var(--ptc-success);
}

.ptc-callout--warning {
  background-color: var(--ptc-warning-light);
  border-left-color: var(--ptc-warning);
}

.ptc-callout--error {
  background-color: var(--ptc-error-light);
  border-left-color: var(--ptc-error);
}

/* Legal Pages article layout */
.ptc-legal {
  max-width: var(--ptc-content-narrow);
  margin: 0 auto;
  line-height: var(--ptc-leading-relaxed);
}

.ptc-legal__title {
  margin-bottom: var(--ptc-space-2);
}

.ptc-legal__meta {
  font-size: var(--ptc-font-sm);
  color: var(--ptc-text-muted);
  margin-bottom: var(--ptc-space-6);
  display: block;
}

.ptc-legal__section {
  margin-bottom: var(--ptc-space-8);
}

/* 14. Calculator Tabs */
.ptc-calculator__tabs {
  display: flex;
  border-bottom: 2px solid var(--ptc-border-light);
  margin-bottom: var(--ptc-space-6);
}

.ptc-calculator__tab {
  flex: 1;
  padding: var(--ptc-space-3) var(--ptc-space-4);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-size: var(--ptc-font-sm);
  font-weight: var(--ptc-font-medium);
  color: var(--ptc-text-secondary);
  cursor: pointer;
  transition: color var(--ptc-transition), border-color var(--ptc-transition);
}

.ptc-calculator__tab:hover {
  color: var(--ptc-accent);
}

.ptc-calculator__tab--active {
  color: var(--ptc-accent);
  border-bottom-color: var(--ptc-accent);
}

.ptc-calculator__panel {
  display: block;
}

.ptc-calculator__panel--hidden {
  display: none;
}

@media (min-width: 768px) {
  .ptc-calculator__tab {
    font-size: var(--ptc-font-md);
    padding: var(--ptc-space-4) var(--ptc-space-6);
  }
}

/* 15. Bracket Calculator */
.ptc-bracket__heading {
  margin-top: var(--ptc-space-8);
  text-align: center;
}

.ptc-bracket-viz {
  position: relative;
  height: 60px;
  background-color: var(--ptc-gray-200);
  border-radius: var(--ptc-radius-md);
  margin: var(--ptc-space-4) 0;
  overflow: hidden;
}

.ptc-bracket {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--ptc-font-xs);
  color: var(--ptc-white);
  font-weight: var(--ptc-font-bold);
  position: absolute;
  top: 0;
  bottom: 0;
  background-color: var(--ptc-gray-500);
  transition: background-color var(--ptc-transition);
}

.ptc-bracket--active {
  background-color: var(--ptc-accent);
}

.ptc-distribution-chart {
  height: 180px;
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  background-color: var(--ptc-gray-50);
  border: 1px solid var(--ptc-border-light);
  border-radius: var(--ptc-radius-md);
  padding: var(--ptc-space-4) 5%;
  margin-bottom: var(--ptc-space-2);
}

.ptc-chart-labels {
  display: flex;
  justify-content: space-around;
  padding: 0 5%;
  margin-bottom: var(--ptc-space-4);
}

.ptc-results-section--visible {
  display: block;
}