/* Generated by scripts/preview-styles.mjs; edit src/styles/global.css. */
/* ==========================================================================
   CTAO Science Portal: content page mockup
   Colours and type follow the CTAO Brand Guidelines (April 2024).
   ========================================================================== */

/* Fonts
   ========================================================================== */

@font-face {
  font-family: "Inter";
  font-weight: 400 700;
  font-display: swap;
  src: url("/assets/fonts/inter-latin.woff2") format("woff2");
}

@font-face {
  font-family: "Space Grotesk";
  font-weight: 500 700;
  font-display: swap;
  src: url("/assets/fonts/space-grotesk-latin.woff2") format("woff2");
}

/* Tokens
   ========================================================================== */

:root {
  /* Brand main colours (D.2.1) */
  --galaxy-blue: #00004a;
  --cherenkov-blue: #00e4d8;
  --moon-gray: #f5f5f5;

  /* Brand secondary colours (D.2.2) */
  --white: #ffffff;
  --cosmic-azure: #007aff;
  --interstellar-indigo: #00009c;

  /* Text */
  --text: #111111;
  --text-muted: #555555;
  /* Cosmic Azure at 84% brightness: 5.4:1 on white, 3.5:1 against body text */
  --link: #0066d6;

  /* Type: Inter for everything, Space Grotesk for headlines (D.3) */
  --font-body: "Inter", Arial, sans-serif;
  --font-head: "Space Grotesk", Arial, sans-serif;

  /* Layout */
  --content-width: 85rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --header-height: 7rem;
  --header-height-scrolled: 5rem;
  --radius-lg: 60px;
  --radius-md: 30px;
  --radius-sm: 15px;
  /* Dropdown submenus (Example, language) */
  --radius-menu: 8px;
  --transition: 0.3s ease-in-out;

  /* Film grain tile over the hero background, also hides gradient banding */
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.05'/%3E%3C/svg%3E");
}

/* Base
   ========================================================================== */

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

html {
  scroll-padding-top: var(--header-height-scrolled);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

body.no-scroll {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

button {
  padding: 0;
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

/* Focus ring: Link blue on light backgrounds, Cherenkov Blue on dark ones */
:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
}

.site-header :focus-visible,
.page-hero :focus-visible,
.site-footer :focus-visible {
  outline-color: var(--cherenkov-blue);
}

/* Prose
   ========================================================================== */

body {
  padding-bottom: 5rem;
}

body > * {
  max-width: 64rem;
}

/* Galaxy Blue headline on light background (D.3.4) */
body h2 {
  margin: 3rem 0 1rem;
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 3vw, 2.375rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--galaxy-blue);
}

body h2:first-child {
  margin-top: 0;
}

body p {
  margin: 0 0 1.25rem;
  font-size: 1.0625rem;
  line-height: 1.6;
}

/* Text links: colour only at rest, underline on hover and focus */
body a:not(.btn):hover,
body a:not(.btn):focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

/* Cherenkov Blue fails contrast as text on white, so it is the accent bar */
body .highlight,
body blockquote {
  margin: 2.5rem 0;
  padding-left: 1.5rem;
  font-size: 1.375rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--galaxy-blue);
  border-left: 4px solid var(--cherenkov-blue);
}

/* Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  height: 2.75rem;
  padding: 0 1.5rem;
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: 999px;
}

/* Underline the label only: a flex container would pass it on to the arrow */
.btn:hover,
.btn:focus-visible {
  text-decoration: none;
}

.btn:hover .btn__label,
.btn:focus-visible .btn__label {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.btn--primary {
  color: var(--white);
  background: linear-gradient(
    90deg,
    var(--galaxy-blue) 0%,
    var(--cosmic-azure) 70%,
    var(--cherenkov-blue) 100%
  );
}

.btn--primary:hover {
  filter: brightness(1.1);
}

body { overflow-wrap: anywhere; }
body h3, body h4, body h5, body h6 { color: var(--galaxy-blue); font-family: var(--font-head); }
body li { margin-bottom: 0.5rem; }
body blockquote p { font-size: inherit; line-height: inherit; }
body pre { padding: 1rem; overflow-x: auto; background: var(--moon-gray); }
body code { overflow-wrap: normal; }
body table { display: block; overflow-x: auto; border-collapse: collapse; }
body th, body td { padding: 0.75rem; border-bottom: 1px solid #ddd; text-align: left; }
body hr { margin: 2rem 0; border: 0; border-top: 1px solid #ddd; }
body img { border-radius: var(--radius-sm); }

body { display: block; min-height: 0; max-width: 64rem; margin: 0 auto; padding: 1.5rem; }
h1 { color: var(--galaxy-blue); font-family: var(--font-head); font-weight: 500; line-height: 1.05; }