/* =========================================================================
   Shared site stylesheet — Green Party design system
   -------------------------------------------------------------------------
   Tokens mirror vault/pgp/design.md (see ./design.md for the source spec).
   One stylesheet for every project. Projects reference /assets/site.css and
   stay content-only; all look-and-feel lives here.

   NOTE ON PATHS: the site is served at a domain root (e.g. projects.davn.uk),
   so asset paths are absolute (/assets/...). If you ever move the site to a
   SUB-PATH (e.g. davn.uk/projects/), switch to relative paths.
   ========================================================================= */

/* -------------------------------------------------------------------------
   1. Tokens (from design.md)
   ------------------------------------------------------------------------- */
:root {
  /* Colours */
  --color-primary:        #00A85A; /* Fair Green — identity/display only */
  --color-secondary:      #00643B; /* Forest Green — reading text, buttons */
  --color-accent:         #27E663; /* Highlighter Green — decorative, digital only */
  --color-on-primary:     #FFFFFF;
  --color-on-secondary:   #FFFFFF;
  --color-foreground:     #001F4E; /* Midnight — default body ink */
  --color-background:     #FFFFFF;
  --color-link:           #00643B;
  --color-link-hover:     #385E2C;

  /* Extended palette */
  --green-fair:           #00A85A;
  --green-forest:         #00643B;
  --green-olive:          #385E2C;
  --green-strong:         #28AA1E;
  --green-apple:          #6AB023;
  --green-lime:           #97D700;
  --green-highlighter:    #27E663;
  --midnight:             #001F4E;
  --sky:                  #41B6E6;
  --red:                  #DF1317;
  --blush:                #FF8A8C;
  --orange:               #FF5B0F;
  --teal:                 #00606A;
  --violet:               #410076;
  --morello:              #BC0C29;
  --peach:                #FFC399;
  --brown:                #713400;
  --turquoise:            #00A499;
  --purple:               #824EE4;
  --pink:                 #E83E6A;
  --yellow:               #FAE100;
  --white:                #FFFFFF;
  --black:                #000000;
  --grey:                 #6B7177;

  /* Neutrals */
  --gray-100: #F4F5F3;
  --gray-200: #E6E8E4;
  --gray-300: #D3D6CF;
  --gray-400: #AEB2AA;
  --gray-500: #6B7177;

  /* Typography */
  --font-display: "Bebas Neue", "Arial Narrow", Impact, sans-serif;
  --font-body: "Manrope", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-secondary: "Helvetica Neue Condensed", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;

  --text-display: 4rem;
  --text-headline: 3rem;
  --text-h1: 2.5rem;
  --text-h2: 1.875rem;
  --text-h3: 1.5rem;
  --text-h4: 1.25rem;
  --text-body-large: 1.125rem;
  --text-body: 1rem;
  --text-caption: 0.875rem;
  --leading: 1.6;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* Layout */
  --container-max: 72rem;
  --container-pad: var(--space-lg);
  --line: 1px solid var(--gray-300);

  /* Focus ring */
  --focus-ring: 3px solid rgba(0, 168, 90, 0.4);
}

/* -------------------------------------------------------------------------
   2. Reset / base
   ------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading);
  color: var(--color-foreground);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }

input, button, textarea, select { font: inherit; color: inherit; }

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

/* -------------------------------------------------------------------------
   3. Accessibility
   ------------------------------------------------------------------------- */
:where(a, button, input, textarea, select, summary):focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-secondary);
  color: var(--color-on-secondary);
  padding: var(--space-sm) var(--space-md);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  z-index: 100;
}
.skip-link:focus { left: 0; top: 0; }

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

/* -------------------------------------------------------------------------
   4. Typography
   ------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--color-secondary);
  margin-block: var(--space-md) var(--space-sm);
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); }

/* h4+ swap to body face for readability */
h4 { font-family: var(--font-body); font-size: var(--text-h4); font-weight: 700; }
h5 { font-family: var(--font-body); font-size: var(--text-h3) * 1; font-size: 1.1rem; font-weight: 600; }
h6 { font-family: var(--font-body); font-size: var(--text-caption); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--gray-600, var(--gray-500)); }

p { margin-block: 0 0 var(--space-md); }

.lead {
  font-size: var(--text-body-large);
  line-height: 1.55;
  color: var(--gray-600, #4a4f52);
}

a { text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--color-link-hover); }

strong, b { font-weight: 700; }
em, i { font-style: italic; }
small { font-size: 0.85em; color: var(--gray-500); }
mark { background: var(--peach); color: inherit; padding: 0 0.15em; }

abbr[title] { text-decoration: underline dotted; cursor: help; }
del { color: var(--gray-500); }
ins { text-decoration: none; background: var(--green-lime); background: rgba(151, 215, 0, 0.35); }

sub, sup { font-size: 0.75em; }

u { text-decoration: underline; }

hr {
  border: 0;
  border-top: var(--line);
  margin-block: var(--space-xl);
}

blockquote {
  margin-block: var(--space-lg);
  padding-left: var(--space-md);
  border-left: 4px solid var(--color-primary);
  color: var(--gray-600, #4a4f52);
  font-size: var(--text-body-large);
  font-family: var(--font-secondary);
  font-style: italic;
}
blockquote :last-child { margin-bottom: 0; }
blockquote cite {
  display: block;
  font-style: normal;
  font-size: var(--text-caption);
  color: var(--gray-500);
  margin-top: var(--space-sm);
}

kbd, code, samp {
  font-family: "SFMono-Regular", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
}
code {
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.35em;
}

pre {
  background: var(--midnight);
  color: #EAF1EA;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  line-height: 1.5;
  margin-block: var(--space-md);
}
pre code { background: none; border: 0; color: inherit; padding: 0; }
pre code::before, pre code::after { content: none; }

/* -------------------------------------------------------------------------
   5. Lists
   ------------------------------------------------------------------------- */
ul, ol { padding-left: 1.4em; margin-block: 0 0 var(--space-md); }
li { margin-block: 0 var(--space-xs); }
li::marker { color: var(--color-primary); }

ul.tick { list-style: none; padding-left: 0; }
ul.tick li { padding-left: 1.4em; position: relative; }
ul.tick li::before {
  content: "";
  position: absolute; left: 0; top: 0.35em;
  width: 0.5em; height: 0.5em;
  background: var(--color-primary);
  border-radius: 50%;
}

dl { margin-block: 0 0 var(--space-md); }
dt { font-weight: 700; font-family: var(--font-secondary); text-transform: uppercase; letter-spacing: 0.04em; font-size: var(--text-caption); }
dd { margin: 0 0 var(--space-md); padding-left: 0; }

/* -------------------------------------------------------------------------
   6. Tables
   ------------------------------------------------------------------------- */
.table-wrap { overflow-x: auto; margin-block: var(--space-md); }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
caption {
  text-align: left;
  font-weight: 600;
  padding-bottom: var(--space-sm);
  color: var(--gray-600, #4a4f52);
}
thead th {
  background: var(--green-forest);
  color: var(--color-on-secondary);
  font-family: var(--font-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: var(--text-caption);
  text-align: left;
}
th, td { padding: var(--space-sm) var(--space-md); border-bottom: var(--line); }
th { font-weight: 700; }
tbody tr:nth-child(even) { background: var(--gray-100); }
tbody tr:hover { background: rgba(0, 168, 90, 0.07); }

/* -------------------------------------------------------------------------
   7. Figures / media
   ------------------------------------------------------------------------- */
figure { margin-block: var(--space-lg); }
figure img { border-radius: var(--radius-md); box-shadow: 0 2px 12px rgba(0, 26, 12, 0.12); }
figcaption {
  margin-top: var(--space-sm);
  font-size: var(--text-caption);
  color: var(--gray-500);
}
figcaption::before { content: "Figure — "; font-weight: 600; }

/* -------------------------------------------------------------------------
   8. Forms
   ------------------------------------------------------------------------- */
label { display: block; font-weight: 600; margin-bottom: var(--space-xs); }
label + .help { margin-top: calc(var(--space-xs) * -1); }

input,
textarea,
select {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  background: var(--white);
  margin-bottom: var(--space-md);
}
input::placeholder, textarea::placeholder { color: var(--gray-500); }

input:focus, textarea:focus, select:focus {
  border-color: var(--color-primary);
  outline: 2px solid rgba(0, 168, 90, 0.3);
  outline-offset: 0;
}

textarea { min-height: 8em; resize: vertical; }

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7177' stroke-width='3'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: var(--space-xl);
}

input[type="checkbox"],
input[type="radio"] {
  display: inline-block;
  width: auto;
  margin: 0 var(--space-xs) 0 0;
  accent-color: var(--color-secondary);
}
input[type="checkbox"] ~ label,
input[type="radio"] ~ label {
  display: inline-block;
  font-weight: 400;
  vertical-align: middle;
}

fieldset {
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-block: 0 var(--space-md);
}
legend { font-weight: 700; padding: 0 var(--space-sm); }

input:disabled, textarea:disabled, select:disabled, button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.help { font-size: var(--text-caption); color: var(--gray-500); margin: calc(var(--space-xs) * -1) 0 var(--space-sm); }

/* -------------------------------------------------------------------------
   9. Buttons
   ------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-body);
  line-height: 1;
  text-decoration: none;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; }

.btn-primary { background: var(--color-secondary); color: var(--color-on-secondary); }
.btn-primary:hover { background: var(--green-olive); }

.btn-outline { background: transparent; color: var(--color-secondary); border-color: var(--color-secondary); }
.btn-outline:hover { background: var(--color-secondary); color: var(--color-on-secondary); }

.btn-ghost { background: transparent; color: var(--color-secondary); }
.btn-ghost:hover { background: var(--green-fair); background: rgba(0, 168, 90, 0.12); color: var(--color-secondary); }

.btn:focus-visible { outline: var(--focus-ring); }

/* -------------------------------------------------------------------------
   10. Badges & tags
   ------------------------------------------------------------------------- */
.badge {
  display: inline-block;
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.15em 0.6em;
  border-radius: 999px;
  color: var(--green-forest);
  background: rgba(0, 168, 90, 0.12);
  border: 1px solid rgba(0, 168, 90, 0.25);
  white-space: nowrap;
}
.badge--muted { color: var(--gray-600, #4a4f52); background: var(--gray-100); border-color: var(--gray-300); }
.badge--outline { background: transparent; }

/* -------------------------------------------------------------------------
   11. Cards
   ------------------------------------------------------------------------- */
.card {
  display: block;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: var(--color-foreground);
  transition: box-shadow 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}
.card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(0, 26, 12, 0.12);
  transform: translateY(-2px);
  text-decoration: none;
}
.card:focus-visible { outline: var(--focus-ring); }

.card__thumb { aspect-ratio: 16 / 7; background: var(--gray-100); display: flex; align-items: center; justify-content: center; }
.card__thumb .badge { margin: var(--space-md); }
.card__thumb svg { display: block; width: 100%; height: 100%; }
/* Card artwork — inline SVG in index.html, coloured by theme tokens so it
   recolours automatically when the Green/Indigo stylesheet flips. */
.card__thumb svg .art-primary { fill: var(--color-primary); }
.card__thumb svg .art-secondary { fill: var(--color-secondary); }
.card__thumb svg .art-accent { fill: var(--color-accent); }
.card__thumb svg .art-white { fill: var(--white); }
.card__thumb svg .art-gray { fill: var(--gray-200); }
.card__thumb svg .art-wash { fill: var(--color-primary); opacity: 0.08; }
.card__thumb svg .art-soft { fill: var(--color-accent); opacity: 0.22; }
.card__thumb svg .art-stroke { fill: none; stroke: var(--color-secondary); stroke-linecap: round; stroke-linejoin: round; }
.card__body { padding: var(--space-lg); }
.card__title { font-family: var(--font-display); font-size: 1.25rem; letter-spacing: 0.015em; color: var(--color-secondary); margin: 0 0 var(--space-xs); }
.card__desc { margin: 0; color: var(--gray-600, #4a4f52); font-size: 0.95rem; }
.card__meta { margin-top: var(--space-md); display: flex; flex-wrap: wrap; gap: var(--space-xs); }

/* -------------------------------------------------------------------------
   12. Callouts
   ------------------------------------------------------------------------- */
.callout {
  border: 1px solid var(--gray-200);
  border-left: 4px solid var(--color-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-block: var(--space-md);
  background: var(--gray-100);
}
.callout--info   { border-left-color: var(--sky);   background: rgba(65, 182, 230, 0.08); }
.callout--warn   { border-left-color: var(--orange); background: rgba(255, 91, 15, 0.08); }
.callout--danger { border-left-color: var(--red);    background: rgba(223, 19, 23, 0.06); }
.callout--tip    { border-left-color: var(--color-primary); background: rgba(0, 168, 90, 0.07); }
.callout p:last-child { margin-bottom: 0; }
.callout .callout__label { font-weight: 700; font-family: var(--font-secondary); text-transform: uppercase; letter-spacing: 0.05em; font-size: var(--text-caption); }

/* -------------------------------------------------------------------------
   13. Layout: container, grid, site chrome
   ------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.site-header {
  border-bottom: 1px solid var(--gray-200);
  background: var(--white);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: var(--space-md);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  color: var(--color-secondary);
  text-decoration: none;
}
.brand:hover { color: var(--green-olive); text-decoration: none; }
.brand__mark {
  width: 1.4em; height: 1.4em;
  flex: none;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  position: relative;
}
.brand__mark::after {
  content: "";
  position: absolute; inset: 0.35em;
  background: var(--color-secondary);
  border-radius: calc(var(--radius-sm) / 2);
}

.site-tagline { font-size: var(--text-caption); color: var(--gray-500); }

.nav ul { list-style: none; display: flex; gap: var(--space-lg); padding: 0; margin: 0; }
.nav a { text-decoration: none; font-weight: 600; color: var(--color-foreground); }
.nav a:hover { color: var(--color-link-hover); text-decoration: underline; }

main { padding-block: var(--space-xxl); }

.section { margin-block: 0 0 var(--space-xxl); }

.hero { padding-block: var(--space-xl) var(--space-xxl); }
.hero__eyebrow { font-family: var(--font-secondary); text-transform: uppercase; letter-spacing: 0.08em; font-size: var(--text-caption); color: var(--color-primary); font-weight: 700; }
.hero__title {
  font-size: var(--text-display);
  letter-spacing: 0.01em;
  color: var(--color-secondary);
  line-height: 1;
  margin: var(--space-sm) 0 var(--space-md);
}
.hero__title :where(.hl) { color: var(--color-primary); }
.hero__lead { max-width: 60ch; }

.section__head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-md); margin-bottom: var(--space-lg); border-bottom: 2px solid var(--color-primary); padding-bottom: var(--space-sm); }
.section__head h2 { margin: 0; }

.page-title { font-size: var(--text-headline); margin-bottom: var(--space-sm); }

.site-footer {
  border-top: var(--line);
  padding-block: var(--space-xl);
  background: var(--green-forest);
  color: #E7F2E8;
  font-size: var(--text-caption);
}
.site-footer a { color: #CBE9D2; }
.site-footer__inner { display: flex; flex-wrap: wrap; gap: var(--space-sm) var(--space-lg); align-items: center; justify-content: space-between; }

/* -------------------------------------------------------------------------
   14. Utilities
   ------------------------------------------------------------------------- */
.text-center { text-align: center; }
.text-muted { color: var(--gray-500); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.stack > * + * { margin-top: var(--space-md); }
.stack-lg > * + * { margin-top: var(--space-lg); }

/* -------------------------------------------------------------------------
   15. Responsive
   ------------------------------------------------------------------------- */
@media (max-width: 640px) {
  :root { --text-display: 2.75rem; --text-h1: 2rem; }
  .site-header__inner { flex-direction: column; align-items: flex-start; }
  .section__head { flex-direction: column; align-items: flex-start; }
}

/* -------------------------------------------------------------------------
   16. Theme switcher (Green / Indigo)
   -------------------------------------------------------------------------
   Shared chrome: segmented control in the site header that swaps between
   site.css (green) and site-new.css (indigo). Uses semantic tokens only,
   so it re-themes itself in both stylesheets. The buttons are toggled by a
   small inline script on each page (no shared JS file yet).
   ------------------------------------------------------------------------- */
.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 999px;
}
.theme-switch__btn {
  border: 0;
  background: transparent;
  color: var(--color-foreground);
  font: inherit;
  font-size: var(--text-caption);
  font-weight: 600;
  line-height: 1.2;
  padding: 4px 12px;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
}
.theme-switch__btn:hover { color: var(--color-link-hover); }
.theme-switch__btn.is-active {
  background: var(--color-secondary);
  color: var(--color-on-secondary);
}
.theme-switch__btn:focus-visible { outline: var(--focus-ring); outline-offset: 2px; }

/* -------------------------------------------------------------------------
   17. Fonts (self-hosted — OFL licensed: Bebas Neue, Manrope)
   -------------------------------------------------------------------------
   Served from /assets/fonts/ (no Google Fonts request at runtime).
   Manrope is a variable font (weight 400–700 declared).
   latin-ext carries the Welsh accents (ŵ ẅ ẃ ẁ) the brand requires.
   ------------------------------------------------------------------------- */
@font-face {
  font-family: "Bebas Neue";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/bebas-neue-latin-ext-400.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Bebas Neue";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/bebas-neue-latin-400.woff2") format("woff2");
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