:root {
  color-scheme: light;

  /* Color tokens */
  --color-white: #fff;
  --color-black: #000;
  --color-blue-700: #0000ee;
  --color-purple-800: #551a8b;
  --color-page: var(--color-white);
  --color-surface: var(--color-white);
  --color-text: var(--color-black);
  --color-border: var(--color-black);
  --color-link: var(--color-blue-700);
  --color-link-visited: var(--color-purple-800);

  /* Typography tokens */
  --font-family-body: "Times New Roman", serif;
  --font-size-sm: 0.875rem;
  --font-size-display: 3rem;

  /* Spacing tokens */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;

  /* Border and layout tokens */
  --border-default: 0.0625rem solid var(--color-border);
  --border-emphasis: 0.125rem solid var(--color-border);
  --shell-width: 34.5rem;
  --background-tile-size: 31.25rem;
  --logo-size: 3rem;

  --page-background-image: url("../img/water-texture.66d0d24ad7b7.jpg");
}

@media screen {
  :root[data-theme="dark"] {
    color-scheme: dark;
    --color-page: #1b1b1b;
    --color-surface: #1b1b1b;
    --color-text: var(--color-white);
    --color-border: var(--color-white);
    --color-link: var(--color-white);
    --color-link-visited: var(--color-white);
    --page-background-image: linear-gradient(rgb(0 0 0 / 50%), rgb(0 0 0 / 50%)),
      url("../img/water-texture.66d0d24ad7b7.jpg");
  }
}

@media screen and (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    color-scheme: dark;
    --color-page: #1b1b1b;
    --color-surface: #1b1b1b;
    --color-text: var(--color-white);
    --color-border: var(--color-white);
    --color-link: var(--color-white);
    --color-link-visited: var(--color-white);
    --page-background-image: linear-gradient(rgb(0 0 0 / 50%), rgb(0 0 0 / 50%)),
      url("../img/water-texture.66d0d24ad7b7.jpg");
  }
}

/* Shared styling for all pages */

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

body {
  min-height: 100vh;
  margin: 0;
  color: var(--color-text);
  background-color: var(--color-page);
  background-image: var(--page-background-image);
  background-repeat: repeat;
  background-size: var(--background-tile-size) auto;
  background-attachment: fixed;
  font-family: var(--font-family-body);
}

a {
  color: var(--color-link);
}

a:visited {
  color: var(--color-link-visited);
}

nav {
  width: min(var(--shell-width), 100%);
  margin: 0 auto;
  padding: var(--space-3) 0 0;
  text-align: right;
}

nav a {
  margin: 0 var(--space-1);
}

nav {
  overflow-wrap: anywhere;
}

.logout-form {
  display: inline;
}

.logout-link {
  padding: 0;
  border: 0;
  color: var(--color-link);
  background: transparent;
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
}

.ticker {
  width: min(var(--shell-width), 100%);
  margin: var(--space-2) auto 0;
  padding: var(--space-1) var(--space-6);
  border: var(--border-emphasis);
  color: var(--color-text);
  background: var(--color-surface);
  overflow: hidden;
  white-space: nowrap;
}

.ticker-track {
  display: flex;
  width: max-content;
  animation: ticker-left 15s linear infinite;
}

.ticker-copy {
  display: flex;
  flex: none;
  gap: var(--space-8);
  padding-right: var(--space-8);
}

@keyframes ticker-left {
  to {
    transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ticker-track {
    animation: none;
  }
}

main {
  width: min(var(--shell-width), 100%);
  margin: var(--space-2) auto var(--space-8);
  padding: var(--space-6);
  border: var(--border-emphasis);
  background: var(--color-surface);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-2);
  border: var(--border-emphasis);
}

.site-header img {
  width: auto;
  height: var(--logo-size);
}

h1 {
  margin: 0;
  font-size: var(--font-size-display);
}

.home-link,
.home-link:visited {
  color: inherit;
  text-decoration: none;
}

.home-link:hover,
.home-link:focus-visible {
  text-decoration: underline;
}

.section-heading {
  text-align: center;
}

.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

hr {
  border: 0;
  border-top: var(--border-emphasis);
}

footer {
  font-size: var(--font-size-sm);
  text-align: center;
}

footer p,
footer address {
  margin: 0;
}

.credit {
  margin-bottom: var(--space-3);
}

@media (min-width: 64rem) {
  html {
    font-size: 112.5%;
  }
}

/* Styling for specific pages */

/* Account and registration pages */

.account-panel,
.form-panel {
  width: min(100%, 27rem);
  margin: var(--space-8) auto;
  overflow-wrap: anywhere;
}

.form-panel > p {
  text-align: center;
}

.account-panel {
  overflow-wrap: anywhere;
}

.account-panel img {
  max-width: 100%;
  height: auto;
  padding: var(--space-2);
  background: var(--color-white);
}

.form-layout {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.form-name-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-field {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
}

.form-field input {
  width: 100%;
}

.form-errors {
  color: #a00000;
}

.form-errors ul {
  margin: 0;
  padding-left: var(--space-6);
}

.field-help {
  font-size: var(--font-size-sm);
}

.form-action {
  justify-self: center;
}

.form-prompt {
  margin-top: var(--space-6);
}

/* Membership status */

.membership-summary,
.membership-price {
  text-align: center;
}

.membership-price {
  font-size: 1.5rem;
  font-weight: bold;
}

.membership-option {
  margin-top: var(--space-6);
  padding: var(--space-4);
  border: var(--border-default);
}

.membership-option > h3 {
  margin-top: 0;
}

/* Links page */

.link-list .section-heading {
  margin-bottom: var(--space-2);
  text-align: left;
}

.link-list ul {
  margin-top: 0;
}

/* Privacy policy page */

.privacy-page article {
  overflow-wrap: anywhere;
}

.printable-page {
  background: var(--color-white);
}

.printable-page main {
  width: min(100%, 50rem);
  border: 0;
}

.privacy-page table {
  width: 100%;
  border-collapse: collapse;
}

.privacy-page th,
.privacy-page td {
  padding: var(--space-2);
  border: var(--border-default);
  text-align: left;
  vertical-align: top;
}

.table-wrap {
  overflow-x: auto;
}

/* Responsive layout */

@media (max-width: 31.25rem) {
  body {
    display: flex;
    flex-direction: column;
  }

  main {
    flex: 1;
    margin-bottom: 0;
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
  }

  .columns,
  .form-name-fields {
    grid-template-columns: 1fr;
  }

  .site-header {
    gap: var(--space-2);
  }

  .site-header h1 {
    font-size: clamp(1.5rem, 8vw, var(--font-size-display));
    overflow-wrap: anywhere;
  }
}

/* Printable privacy policy */

@media print {
  :root {
    --page-background-image: none;
  }

  .privacy-page {
    background: var(--color-page);
  }

  .privacy-page nav,
  .privacy-page main > header,
  .privacy-page main > hr,
  .privacy-page footer,
  .privacy-page .print-link {
    display: none;
  }

  .privacy-page main {
    width: auto;
    margin: 0;
    padding: 0;
    border: 0;
  }

  .privacy-page article > .section-heading {
    margin-top: 0;
  }

  .privacy-page .table-wrap {
    overflow: visible;
  }

  .privacy-page tr {
    break-inside: avoid;
  }

  .privacy-page h2,
  .privacy-page h3,
  .privacy-page h4 {
    break-after: avoid;
  }
}