:root {
  --colour-background: #ffffff;
  --colour-primary: #123b5d;
  --colour-primary-hover: #0c304d;
  --colour-secondary: #4f6576;
  --colour-focus: #f0b429;
  --colour-card: #edf5f9;
  --colour-card-hover: #e3eff5;
  --colour-card-border: #d4e4ec;

  --page-width: 76rem;
  --radius-small: 0.5rem;
  --radius-medium: 0.75rem;
  --radius-large: 1.25rem;

  font-family: Arial, Helvetica, sans-serif;
  color: var(--colour-primary);
  background-color: var(--colour-background);
  font-synthesis: none;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

body {
  min-width: 20rem;
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  background-color: var(--colour-background);
}

button {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 0.1875rem solid var(--colour-focus);
  outline-offset: 0.1875rem;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 110;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-small);
  color: #ffffff;
  background-color: var(--colour-primary);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.page {
  display: flex;
  flex-direction: column;
  width: min(100%, var(--page-width));
  min-height: 100vh;
  min-height: 100svh;
  margin-inline: auto;
  padding: 1rem 1.25rem 1.5rem;
}

.language-selector {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.25rem;
  color: var(--colour-secondary);
}

.language-button {
  min-width: 2.75rem;
  min-height: 2.75rem;
  padding: 0.5rem;
  border: 0;
  border-radius: var(--radius-small);
  color: var(--colour-secondary);
  background: transparent;
  cursor: pointer;
}

.language-button:hover {
  background-color: var(--colour-card);
}

.language-button[aria-pressed="true"] {
  color: var(--colour-primary);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 0.25rem;
}

main {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  padding-block: 3rem;
}

h1 {
  max-width: 22rem;
  margin: 0;
  font-size: clamp(1.75rem, 8vw, 2.25rem);
  line-height: 1.15;
  text-align: center;
  text-wrap: balance;
}

.resource-grid {
  display: grid;
  width: 100%;
  max-width: 24rem;
  margin-top: 2rem;
  gap: 1.25rem;
}

.resource-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  border: 0.0625rem solid var(--colour-card-border);
  border-radius: var(--radius-large);
  background-color: var(--colour-card);
}

.resource-icon {
  display: grid;
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  place-items: center;
  border-radius: 0.875rem;
  color: var(--colour-primary);
  background-color: var(--colour-background);
}

.resource-card h2 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1.25rem;
  line-height: 1.25;
}

.resource-card p {
  margin: 0 0 1.5rem;
  color: var(--colour-secondary);
  line-height: 1.6;
}

.resource-button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  margin-top: auto;
  padding: 0.75rem 1rem;
  border: 0;
  border-radius: var(--radius-medium);
  color: #ffffff;
  background-color: var(--colour-primary);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.resource-button:hover {
  background-color: var(--colour-primary-hover);
}

.resource-button:active {
  transform: translateY(0.0625rem);
}

.guide-modal[hidden] {
  display: none;
}

.guide-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  background-color: rgb(18 59 93 / 62%);
  overscroll-behavior: contain;
}

.guide-modal__dialog {
  width: 100%;
  height: 100vh;
  height: 100svh;
  margin: 0;
  overflow-y: auto;
  background-color: var(--colour-background);
  overscroll-behavior: contain;
  animation: modal-enter 180ms ease-out;
}

.guide-modal__header {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 0.0625rem solid var(--colour-card-border);
  background-color: var(--colour-background);
}

.guide-modal__header h2 {
  margin: 0;
  font-size: clamp(1.5rem, 7vw, 2rem);
  line-height: 1.2;
  text-wrap: balance;
}

.guide-modal__close {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  flex-shrink: 0;
  padding: 0.5rem 0.75rem;
  border: 0.0625rem solid var(--colour-primary);
  border-radius: var(--radius-medium);
  color: var(--colour-primary);
  background-color: var(--colour-background);
  font-weight: 700;
  cursor: pointer;
}

.guide-modal__close span[aria-hidden="true"] {
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 0.8;
}

.guide-modal__close:hover {
  background-color: var(--colour-card);
}

.guide-modal__content {
  width: 100%;
  max-width: 44rem;
  margin-inline: auto;
  padding: 1.5rem 1.25rem 2rem;
}

.guide-modal__description {
  max-width: 36rem;
  margin: 0 auto;
  color: var(--colour-secondary);
  line-height: 1.6;
  text-align: center;
}

.guide-list {
  display: grid;
  margin-top: 2rem;
  gap: 1rem;
}

.guide-item {
  overflow: hidden;
  border: 0.0625rem solid var(--colour-card-border);
  border-radius: var(--radius-large);
  background-color: var(--colour-card);
}

.guide-item h3 {
  margin: 0;
}

.guide-toggle {
  position: relative;
  display: block;
  width: 100%;
  min-height: 4rem;
  padding: 1rem 3.5rem 1rem 1.25rem;
  border: 0;
  color: var(--colour-primary);
  background-color: transparent;
  font-weight: 700;
  line-height: 1.4;
  text-align: left;
  cursor: pointer;
}

.guide-toggle::after {
  position: absolute;
  top: 50%;
  right: 1.5rem;
  width: 0.75rem;
  height: 0.75rem;
  border-right: 0.125rem solid currentColor;
  border-bottom: 0.125rem solid currentColor;
  content: "";
  transform: translateY(-70%) rotate(45deg);
  transition: transform 180ms ease;
}

.guide-toggle:hover,
.guide-toggle[aria-expanded="true"] {
  background-color: var(--colour-card-hover);
}

.guide-toggle[aria-expanded="true"]::after {
  transform: translateY(-30%) rotate(225deg);
}

.guide-panel {
  padding: 0.25rem 1.25rem 1.25rem;
  animation: guide-panel-enter 180ms ease-out;
}

.guide-panel[hidden] {
  display: none;
}

.guide-panel ol {
  display: grid;
  margin: 0 0 1.5rem;
  padding-left: 1.5rem;
  gap: 0.75rem;
  color: var(--colour-secondary);
  line-height: 1.6;
}

.guide-panel li {
  padding-left: 0.25rem;
}

.guide-panel li::marker {
  color: var(--colour-primary);
  font-weight: 700;
}

.copy-button {
  display: inline-flex;
  width: 100%;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.75rem 1rem;
  border: 0.0625rem solid var(--colour-primary);
  border-radius: var(--radius-medium);
  color: var(--colour-primary);
  background-color: var(--colour-background);
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
}

.copy-button:hover {
  background-color: var(--colour-card-hover);
}

.copy-button:active {
  transform: translateY(0.0625rem);
}

.copy-status {
  position: absolute;
  overflow: hidden;
  width: 0.0625rem;
  height: 0.0625rem;
  margin: -0.0625rem;
  padding: 0;
  border: 0;
  white-space: nowrap;
  clip-path: inset(50%);
}

footer {
  padding-top: 3rem;
  color: var(--colour-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  text-align: center;
}

footer p {
  margin: 0;
}

@keyframes modal-enter {
  from {
    opacity: 0;
    transform: translateY(0.5rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes guide-panel-enter {
  from {
    opacity: 0;
    transform: translateY(-0.375rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 48rem) {
  .page {
    padding: 1.5rem 2rem 2rem;
  }

  main {
    padding-block: 4rem;
  }

  h1 {
    max-width: 44rem;
    font-size: clamp(2.25rem, 5vw, 2.75rem);
  }

  .resource-grid {
    max-width: 50rem;
    margin-top: 3rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .resource-card:last-child:nth-child(odd) {
    width: calc(50% - 0.75rem);
    grid-column: 1 / -1;
    justify-self: center;
  }

  .guide-modal {
    place-items: center;
    padding: 2rem;
  }

  .guide-modal__dialog {
    width: min(100%, 52rem);
    height: auto;
    max-height: calc(100vh - 4rem);
    max-height: calc(100svh - 4rem);
    border-radius: var(--radius-large);
  }

  .guide-modal__header {
    padding: 1.25rem 1.5rem;
  }

  .guide-modal__header h2 {
    font-size: 2rem;
  }

  .guide-modal__content {
    max-width: 48rem;
    padding: 2rem 1.5rem 2.5rem;
  }

  .guide-toggle {
    min-height: 4.5rem;
    padding: 1.125rem 4rem 1.125rem 1.5rem;
    font-size: 1.0625rem;
  }

  .guide-panel {
    padding: 0.5rem 1.5rem 1.5rem;
  }

  .copy-button {
    width: auto;
    min-width: 15rem;
  }

  footer {
    padding-top: 4rem;
  }
}

@media (min-width: 64rem) {
  .page {
    padding: 2rem 2.5rem 2.5rem;
  }

  main {
    padding-block: 5rem;
  }

  h1 {
    max-width: none;
    font-size: 3rem;
  }

  .resource-grid {
    max-width: 68rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .resource-card:last-child:nth-child(odd) {
    width: auto;
    grid-column: auto;
    justify-self: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}