/* Base styles: reset, typography, primitives. Mobile-first; colors only via tokens.css. */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-height) + var(--space-element));
}

body {
  margin: 0;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-body);
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
h1, h2, h3, h4 { font-weight: var(--weight-medium); line-height: var(--leading-heading); text-wrap: balance; }
p { text-wrap: pretty; }
p + p { margin-top: 1em; }

img, svg, video, picture { display: block; max-width: 100%; height: auto; }
img { border-radius: var(--radius); }

a { color: inherit; text-decoration-color: var(--color-accent); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { text-decoration-color: var(--color-hover-border); }

:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; border-radius: var(--radius); }
.on-ink :focus-visible { outline-color: var(--color-focus-on-ink); }
::selection { background: var(--color-highlight); color: var(--color-ink); }

hr { border: 0; border-top: var(--hairline); margin-block: var(--space-section); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Layout ---------- */

.container {
  width: 100%;
  max-width: calc(var(--max-width) + 2 * var(--space-gutter));
  margin-inline: auto;
  padding-inline: var(--space-gutter);
}

.section { padding-block: var(--space-section); }
.section + .section { border-top: var(--hairline); }

.stack > * + * { margin-top: var(--space-element); }

/* Text + image blocks alternate sides on wide screens. */
.split { display: grid; gap: var(--space-card); align-items: center; }
@media (min-width: 768px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split--reverse > :first-child { order: 2; }
}

.card {
  border: var(--hairline);
  border-radius: var(--radius);
  padding: var(--space-card);
  background: var(--color-canvas);
}

/* ---------- Typography ---------- */

/* Display serif: hero and large editorial headings only, weight never above 300. */
.display {
  font-family: var(--font-display);
  font-weight: var(--weight-light);
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
  color: var(--color-ink);
}

.section-title {
  font-size: var(--text-section);
  font-weight: var(--weight-medium);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  text-transform: uppercase;
}

.eyebrow {
  display: inline-block;
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  line-height: 1.84;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  background: var(--color-highlight);
  padding: 0 var(--space-s);
  border-radius: var(--radius);
}

.lead { font-size: var(--text-body-lg); line-height: 1.49; }
.small { font-size: var(--text-small); line-height: 1.5; }
.caption { font-size: var(--text-caption); line-height: 1.84; letter-spacing: 0.1em; }
.muted { color: var(--color-ink-muted); }
.prose { max-width: var(--measure); }
.prose > * + * { margin-top: 1em; }
.text-accent { color: var(--color-accent-deep); }

/* Bullet: 6px terracotta dot. */
.list-dot { list-style: none; padding: 0; }
.list-dot li { position: relative; padding-left: 1.25rem; line-height: var(--leading-list); }
.list-dot li + li { margin-top: 0.875rem; }
.list-dot li::before {
  content: ""; position: absolute; left: 0; top: calc(0.92em - 3px);
  width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent);
}

/* ---------- Suits (♠♣ ink, ♥♦ accent-deep — everywhere) ---------- */

.suit { font-family: var(--font-suit); font-variant-emoji: text; font-style: normal; line-height: 1; }
.suit--spade, .suit--club { color: var(--color-suit-black); }
.suit--heart, .suit--diamond { color: var(--color-suit-red); }
/* On dark grounds ♠♣ switch to cream and ♥♦ to terracotta (≈4.5:1 on ink, decision K-29). */
.on-ink .suit--spade, .on-ink .suit--club { color: var(--color-on-ink); }
.on-ink .suit--heart, .on-ink .suit--diamond { color: var(--color-accent); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-s);
  min-height: var(--touch-target);
  padding: 0.9rem clamp(1.25rem, 0.5rem + 3vw, 2.8125rem);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  background: transparent;
  color: var(--color-ink);
  font: inherit;
  font-size: var(--text-caption);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-heading);
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}
.btn:hover { background: var(--color-hover-surface); border-color: var(--color-hover-border); }

/* Ghost: on dark grounds. */
.btn--ghost { border-color: var(--color-on-ink); color: var(--color-on-ink); padding-inline: clamp(1rem, 0.4rem + 2vw, 2.125rem); }
.btn--ghost:hover { background: color-mix(in srgb, var(--color-on-ink) 12%, transparent); border-color: var(--color-on-ink); }

/* ---------- Forms ---------- */

label { display: block; font-size: var(--text-small); font-weight: var(--weight-medium); margin-bottom: var(--space-xs); }

input:not([type="checkbox"]):not([type="radio"]):not([type="file"]), select, textarea {
  width: 100%;
  min-height: var(--touch-target);
  padding: 0.6rem 0.75rem;
  font: inherit;
  font-size: 1rem; /* ≥16px prevents iOS zoom on focus */
  color: var(--color-ink);
  background: var(--color-canvas);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
}
input:focus, select:focus, textarea:focus { border-color: var(--color-focus); outline: none; box-shadow: none; }
input[type="checkbox"], input[type="radio"] { width: 1.25rem; height: 1.25rem; accent-color: var(--color-accent-deep); }

.field + .field { margin-top: var(--space-element); }
.field-error, .validation-summary-errors { color: var(--color-accent-deep); font-size: var(--text-small); }
.validation-summary-errors ul { padding-left: 1.1rem; }

/* ---------- Mobile back / back-to-top buttons (T-11, scroll-nav.js) ----------
   Below 960px, both fade in after half a screen of scrolling: "back" at the top right just under the sticky
   header (--scroll-nav-top, measured by scroll-nav.js), "top" at the bottom right.
   --scroll-nav-bottom is raised by admin.css above its tab bar and sticky Save bar. */
.scroll-nav[hidden], .scroll-nav { display: none; }
@media (max-width: 959.98px) {
  .scroll-nav { display: block; }
  .scroll-nav__button {
    position: fixed; z-index: 40; bottom: var(--scroll-nav-bottom, calc(var(--space-element) + env(safe-area-inset-bottom, 0px)));
    display: grid; place-items: center; width: var(--touch-target); height: var(--touch-target);
    border: 1px solid color-mix(in srgb, var(--color-ink) 25%, transparent); border-radius: 50%;
    background: color-mix(in srgb, var(--color-canvas) 88%, transparent); color: var(--color-ink);
    opacity: 0; transform: translateY(0.5rem); pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .scroll-nav__button--back {
    top: calc(var(--scroll-nav-top, var(--header-height)) + var(--space-s)); bottom: auto; right: var(--space-element);
    transform: translateY(-0.5rem);
  }
  .scroll-nav__button--top { right: var(--space-element); }
  .scroll-nav.is-visible .scroll-nav__button { opacity: 1; transform: none; pointer-events: auto; }
  .scroll-nav__button svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

/* ---------- Development-only pages (/dev/…): classes instead of style attributes (CSP, F4-04) ---------- */
.dev-weight-300 { font-weight: 300; } .dev-weight-400 { font-weight: 400; } .dev-weight-500 { font-weight: 500; }
.dev-weight-600 { font-weight: 600; } .dev-weight-700 { font-weight: 700; }
.dev-ink { background: var(--color-ink); color: var(--color-on-ink); }
.dev-spaced { margin-top: var(--space-section); }
.dev-pre { white-space: pre-wrap; word-break: break-word; }