/* Base: element defaults, page shell, dividers. Loaded on every page. */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/*
  Cascade layers: Bootstrap (vendor) < base < everything else.
  Component and page files are unlayered, so they override base without
  needing higher specificity or page qualifiers.
*/
@layer vendor, base;

@layer base {
  /* ---------- Element defaults ---------- */

  [hidden] {
    display: none !important;
  }

  @font-face {
    font-family: 'unicons';
    src: url('../font/unicons-subset.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: block
  }

  :root {
    color-scheme: light;
  }

  [data-theme="dark"] body {
    color-scheme: dark;
  }

  body {
    color: var(--page-text);
    font-family: 'DM Sans', Arial, sans-serif;
  }

  ul {
    margin: 0;
    padding: 0;
  }

  ul li {
    list-style: none;
  }

  p,
  li {
    font-size: 20px;
    font-weight: 300;
    line-height: 1.5;
    color: var(--body-text);
  }

  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    font-weight: bold;
    letter-spacing: -1px;
    color: var(--page-text);
  }

  b,
  strong {
    font-weight: bold;
  }

  [data-theme="dark"] :is(p, li) :is(strong, b) {
    color: var(--page-text);
  }

  [data-theme="dark"] figcaption {
    color: var(--caption-text);
  }

  img {
    max-width: 100%;
  }

  @media screen and (max-width: 600px) {
    p {
      font-size: 18px;
    }
  }

  @media screen and (max-width: 420px) {
    p,
    li {
      font-size: 17px;
    }
  }

  /* ---------- Links and focus ---------- */

  a {
    font-weight: normal;
    text-decoration: none;
    transition: all 0.4s ease;
    color: var(--link-color);
  }

  a:hover,
  a:focus-visible {
    color: var(--hover-color);
  }

  /* Links inside running text */
  :is(p, li, figcaption, .project-glass-panel) a[href]:not(.navbar a) {
    color: var(--inline-link, var(--brand-red));
    text-underline-offset: 3px;
  }

  :is(p, li, figcaption, .project-glass-panel) a[href]:not(.navbar a):is(:hover, :focus-visible) {
    color: var(--inline-link-hover);
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible {
    outline: 3px solid var(--brand-red);
    outline-offset: 4px;
  }

  [data-theme="dark"] a:focus-visible,
  [data-theme="dark"] button:focus-visible {
    outline-color: var(--white);
  }

  /* ---------- Navigation bar ---------- */

  .navbar {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 999999;
    will-change: transform;
    transition: transform 200ms linear;
    font-family: 'DM Sans', Arial, sans-serif;
    background: transparent;
    border: 0;
    padding: 15px 0;
  }

  .navbar[class*="-unpinned"] {
    transform: translate(0, -150%);
  }

  .navbar[class*="-pinned"] {
    transform: translate(0, 0);
  }

  .navbar>.container {
    padding: 13px 24px;
  }

  .navbar-brand {
    font-family: 'Space Grotesk', 'DM Sans', Arial, sans-serif;
    font-size: 28px;
    font-weight: bold;
    letter-spacing: -1.4px;
  }

  .navbar-light .navbar-brand,
  .navbar-light .navbar-nav .nav-link,
  .color-mode {
    color: var(--page-text);
  }

  .navbar-light .navbar-brand:is(:hover, :focus-visible),
  .navbar-light .navbar-nav .nav-link:is(:hover, :focus) {
    color: var(--hover-color);
  }

  .ce-brand-dot {
    color: var(--brand-red);
  }

  .navbar-expand-sm .navbar-nav .nav-link {
    padding: 0 20px;
  }

  .nav-link {
    overflow: hidden;
  }

  .navbar .nav-link {
    font-size: 14px;
  }

  .nav-link span {
    position: relative;
    display: inline-block;
  }

  .nav-link span:before {
    position: absolute;
    top: 100%;
    transform: translate3d(0, 0, 0);
  }

  @media (min-width: 576px) {
    .nav-main {
      margin-inline: auto;
    }
  }

  .navbar-toggler {
    border: 0;
    padding: 0;
    width: 32px;
    height: 32px;
    line-height: 32px;
    outline: none;
    margin-right: 10px;
  }

  .navbar-toggler:focus {
    outline: none;
  }

  .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:first-child {
    transform: rotate(45deg);
    top: 6px;
  }

  .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:nth-child(2) {
    display: none;
  }

  .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:last-child {
    transform: rotate(-45deg);
    bottom: 1px;
  }

  .navbar-toggler .navbar-toggler-icon {
    display: block;
    width: 100%;
    height: 2px;
    margin: 5px 0;
    transition: all 0.4s ease;
    position: relative;
    background: var(--page-text);
  }

  /* Colour-mode toggle */
  button.color-mode {
    border: 0;
    background: transparent;
    color: inherit;
    font: inherit;
    font-weight: bold;
    padding: 0;
    font-size: 13px;
  }

  [data-theme="dark"] .color-mode {
    color: #ffffff;
  }

  button.color-mode:focus:not(:focus-visible) {
    outline: none;
    box-shadow: none;
  }

  .color-mode-icon {
    position: relative;
    right: 6px;
  }

  .color-mode-icon:after {
    font-family: 'unicons';
    content: '\ea9f';
    font-weight: 300;
    font-style: normal;
    font-size: 24px;
  }

  [data-theme="dark"] .color-mode-icon:after {
    content: '\eb65';
    color: #ffffff;
  }

  @media (max-width: 991px) {
    .color-mode {
      display: none;
    }
  }

  @media (max-width: 767px) {
    .navbar>.container {
      padding-inline: 18px;
    }

    .navbar-brand {
      font-size: 25px;
    }

    .navbar-collapse {
      text-align: center;
    }

    .navbar .navbar-collapse {
      background: transparent;
    }

    .navbar-expand-sm .navbar-nav .nav-link {
      padding: 3px 20px;
    }
  }

  /* Phone: the menu opens as a list below the bar */
  @media (max-width: 575px) {
    .navbar {
      padding: 10px 14px;
    }

    .navbar>.container {
      padding: 10px 18px;
    }

    .navbar .navbar-collapse {
      text-align: left;
      padding: 10px 0 4px;
      border-top: 1px solid var(--divider);
      margin-top: 10px;
      max-height: calc(100dvh - 105px);
      overflow-y: auto;
    }

    .navbar .navbar-nav {
      margin: 0;
      width: 100%;
    }

    .navbar.navbar-expand-sm .navbar-nav .nav-link {
      display: block;
      padding: 10px 8px;
      line-height: 1.5;
      border-radius: 10px;
      font-size: 14px;
    }

    .navbar .navbar-collapse .color-mode {
      display: flex;
      gap: 8px;
      width: 100%;
      padding: 10px 8px;
      margin-top: 8px;
      border: 0;
      border-top: 1px solid var(--divider);
      background: transparent;
      text-align: left;
    }

    .navbar .navbar-collapse .nav-tools-item {
      margin: 0;
    }

    .navbar:has(.navbar-collapse.show),
    .navbar:has(.navbar-collapse.collapsing) {
      transform: none !important;
    }

    .navbar .navbar-toggler {
      min-height: 44px;
      min-width: 44px;
    }
  }

  @media (prefers-reduced-transparency: reduce) {
    .navbar>.container {
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
    }
  }

  /* ---------- Page shell ---------- */

  body {
    padding-top: 110px;
    background: var(--quiet-bg);
  }

  .ce-skip {
    position: fixed;
    top: -100px;
    left: 20px;
    z-index: 1100;
    padding: 12px 20px;
    background: var(--white);
    color: var(--brand-blue);
  }

  .ce-skip:focus {
    top: 12px;
  }

  .ce-eyebrow {
    font: 500 13px/1.6 'Space Grotesk', Arial, sans-serif;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--body-text);
    margin: 0;
  }

  .framed {
    filter: drop-shadow(5px 5px 7px rgb(65, 65, 65));
    padding: 30px;
  }

  /* Page banner: the wide photo under the navigation */
  .page-banner {
    width: 100%;
    max-width: 1110px;
    margin: 0 auto;
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--surface-edge);
    border-radius: 18px;
    background: var(--page-bg);
    box-shadow: var(--surface-shadow);
  }

  .page-banner-img {
    display: block;
    width: 100%;
    height: clamp(140px, 30vw, 290px);
    object-fit: cover;
    object-position: center;
    padding: 0;
    background: var(--page-bg);
  }

  @media (max-width: 1199px) {
    .page-banner {
      max-width: 930px;
    }
  }

  @media (max-width: 991px) {
    .page-banner {
      max-width: 690px;
    }
  }

  @media (max-width: 767px) {
    .page-banner {
      max-width: 510px;
    }
  }

  @media (max-width: 575px) {
    body {
      padding-top: 95px;
    }

    .page-banner {
      width: calc(100% - 36px);
      margin: 0 18px;
      border-radius: 16px;
    }
  }

  /* ---------- Homepage and journal: display type and tighter spacing ---------- */

  :is(.page-home,.page-journal) :is(h1, h2, h3, h4) {
    font-family: 'Space Grotesk', 'DM Sans', Arial, sans-serif;
    letter-spacing: -.7px;
  }

  @media (max-width: 767px) {
    :is(.page-home,.page-journal) .navbar-expand-sm .navbar-nav .nav-link {
      padding-inline: 10px;
    }
  }

  @media (min-width: 576px) and (max-width: 1199px) {
    :is(.page-home,.page-journal) .navbar-expand-sm .navbar-nav .nav-link {
      padding-inline: 8px;
      font-size: 12px;
    }
  }

  @media (max-width: 575px) {
    :is(.page-home,.page-journal) .container:not(.navbar>*) {
      padding-left: 22px;
      padding-right: 22px;
    }

    :is(.page-home,.page-journal) .navbar-collapse {
      padding: 14px 0;
    }

    :is(.page-home,.page-journal) .framed {
      padding: 12px;
    }
  }

  /* ---------- Project pages and journal: smaller nav links on tablets ---------- */

  @media (max-width: 767px) {
    body:is(.page-project,.page-journal) .navbar .nav-link {
      padding-inline: 8px;
      font-size: 13px;
    }
  }

  /* ---------- Section dividers: a thin red glass filament ---------- */

  :is(hr.ce-divider, hr.rounded),
  .nj-trip::before,
  .cj-footer::before {
    width: calc(100% - 44px);
    max-width: 1110px;
    height: var(--divider-glass-height);
    box-sizing: border-box;
    border: 0;
    border-radius: 999px;
    margin: 0 auto;
    overflow: hidden;
    background: linear-gradient(180deg, #ffffff60, transparent 65%), linear-gradient(90deg, transparent, var(--divider-glass-red) 12%, var(--divider-glass-red) 88%, transparent);
    box-shadow: 0 2px 9px var(--divider-glass-glow), inset 0 1px 0 #ffffff28;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
  }

  @media (max-width: 575px) {
    :is(hr.ce-divider, hr.rounded),
    .nj-trip::before,
    .cj-footer::before {
      height: 2px;
    }
  }

  @media (prefers-reduced-transparency: reduce) {
    :is(hr.ce-divider, hr.rounded),
    .nj-trip::before,
    .cj-footer::before {
      background: var(--brand-red);
      box-shadow: none;
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
    }
  }

  @media (forced-colors: active) {
    :is(hr.ce-divider, hr.rounded),
    .nj-trip::before,
    .cj-footer::before {
      background: CanvasText;
      box-shadow: none;
    }
  }

  /* ---------- Motion ---------- */

  ::view-transition-old(root) {
    animation: none;
  }

  ::view-transition-new(root) {
    animation: theme-crossfade .2s ease-in-out both;
    mix-blend-mode: normal;
  }

  @keyframes theme-crossfade {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms;
      animation-iteration-count: 1;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }

    ::view-transition-old(root),
    ::view-transition-new(root) {
      animation: none;
    }
  }
}