/* ==========================================================================
   One button system (.btn). Single source of truth for every button and
   button-like link on the site. Loaded for every page by includes/fonts.php.

   Markup:   <a class="btn btn--primary" href="...">Label <svg ...arrow/></a>
             <a class="btn btn--primary-dark btn--sm" href="...">Label
               <span class="btn__chip" aria-hidden="true"><svg ...arrow/></span></a>
   Variants: --primary (light bg, bare arrow), --primary-dark (dark bg, cream
             pill + dark chip), --secondary (light), --secondary-dark (dark),
             --text / --text-dark (inline links). Red is never used on dark.
   Modifiers: --sm (44px, nav / cookie / newsletter), --block (full width on
             phones: only for a sole action or a stack with a secondary).
   Layout:   .btn-group = row on desktop, stack on phones (primary on top).
   States:   :hover, :active, :focus-visible, [aria-disabled="true"],
             [aria-busy="true"] (spinner, width locked, clicks ignored).

   Keep specificity low: modifiers are single classes so a page can still
   place a button (margin, grid area) without fighting its look.
   ========================================================================== */

:root {
  --btn-red: #963723;
  --btn-red-hover: #7F2E1E;
  --btn-ink: #2B1004;
  --btn-cream-top: #FFF3DC;
  --btn-cream-bottom: #FFE2AE;
  --btn-chip-ink: #FFE8C0;
  --btn-focus-light: #963723;
  --btn-focus-dark: #FFD999;
}

.btn {
  --btn-h: 60px;
  --btn-pad: clamp(28px, 2.6vw, 44px);
  --btn-fs: clamp(1rem, 0.4vw + 0.8rem, 1.2rem);
  --btn-chip: 44px;
  --btn-arrow: 22px;
  --btn-fg: #FFFFFF;
  --btn-focus: var(--btn-focus-light);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  box-sizing: border-box;
  min-height: var(--btn-h);
  padding: 0 var(--btn-pad);
  border: 0;
  border-radius: 999px;
  background: none;
  color: var(--btn-fg);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: var(--btn-fs);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0;
  text-align: center;
  text-decoration: none;
  text-transform: none;
  white-space: nowrap;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease,
              border-color 0.2s ease, color 0.2s ease;
}
@media (max-width: 1040px) {
  .btn { --btn-h: 56px; --btn-fs: 16px; --btn-chip: 40px; }
}
@media (max-width: 520px) {
  .btn { --btn-h: 52px; --btn-pad: 24px; --btn-chip: 36px; }
}
/* Very narrow phones: a long label may wrap instead of overflowing */
@media (max-width: 380px) {
  .btn { white-space: normal; }
}
/* Small: nav, cookie banner, newsletter. Same height at every breakpoint. */
.btn--sm {
  --btn-h: 44px;
  --btn-pad: 20px;
  --btn-fs: 15px;
  --btn-chip: 32px;
  --btn-arrow: 18px;
  gap: 10px;
}

.btn:focus-visible { outline: 3px solid var(--btn-focus); outline-offset: 3px; }

/* Bare arrow (primary) and chip arrow (primary-dark) */
.btn > svg { width: var(--btn-arrow); height: var(--btn-arrow); flex-shrink: 0; transition: transform 0.25s ease; }
.btn__chip {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: var(--btn-chip);
  height: var(--btn-chip);
  border-radius: 50%;
  background: var(--btn-ink);
  color: var(--btn-chip-ink);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
  transition: transform 0.35s cubic-bezier(0.34, 1.36, 0.64, 1);
}
.btn__chip > svg { width: 15px; height: 15px; }

/* Full width on phones: only for a sole action or a stack with a secondary */
@media (max-width: 520px) {
  .btn--block { display: flex; width: 100%; }
}

/* Button row: primary first (left on desktop, top on phones), never reversed */
.btn-group { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
@media (max-width: 520px) {
  .btn-group { flex-direction: column; align-items: stretch; gap: 12px; }
  .btn-group > .btn { width: 100%; }
}

/* ---- Primary (light backgrounds) ---- */
.btn--primary {
  --btn-fg: #FFFFFF;
  background-color: var(--btn-red);
  box-shadow: 0 6px 20px rgba(150, 55, 35, 0.22);
}
.btn--primary:hover { background-color: var(--btn-red-hover); transform: translateY(-2px); }
.btn--primary:hover > svg,
.btn--primary:focus-visible > svg { transform: translateX(6px); }
.btn--primary:active { transform: none; box-shadow: 0 2px 8px rgba(150, 55, 35, 0.2); }

/* ---- Primary on dark: cream pill + dark chip (red fails 3:1 on dark) ---- */
.btn--primary-dark {
  --btn-fg: var(--btn-ink);
  --btn-focus: var(--btn-focus-dark);
  overflow: hidden;
  background: linear-gradient(180deg, var(--btn-cream-top) 0%, var(--btn-cream-bottom) 100%);
  box-shadow: 0 6px 22px rgba(255, 214, 150, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.85),
              inset 0 -1px 0 rgba(150, 90, 30, 0.28);
}
.btn--primary-dark:has(> .btn__chip) { padding-right: 8px; }
.btn--primary-dark.btn--sm:has(> .btn__chip) { padding-right: 6px; }
.btn--primary-dark:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(255, 214, 150, 0.38),
  inset 0 1px 0 rgba(255, 255, 255, 0.9), inset 0 -1px 0 rgba(150, 90, 30, 0.28); }
.btn--primary-dark:hover .btn__chip,
.btn--primary-dark:focus-visible .btn__chip { transform: rotate(-45deg); }
.btn--primary-dark:active { transform: none; }
/* one light sweep on hover */
.btn--primary-dark::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 35%, rgba(255, 255, 255, 0.75) 50%, transparent 65%);
  translate: -120% 0;
  pointer-events: none;
}
.btn--primary-dark:hover::after { translate: 120% 0; transition: translate 0.8s ease; }

/* ---- Secondary (light backgrounds) ---- */
.btn--secondary {
  --btn-fg: #111111;
  background-color: #FFFFFF;
  border: 1px solid #8A8A8A;   /* 3.4:1 on white: clearly a control (Cess 2026-10-23) */
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}
.btn--secondary:hover { border-color: var(--btn-red); transform: translateY(-2px); }
.btn--secondary:active { transform: none; box-shadow: none; }

/* ---- Secondary on dark ---- */
.btn--secondary-dark {
  --btn-fg: var(--btn-cream-top);
  --btn-focus: var(--btn-focus-dark);
  background-color: transparent;
  border: 1.5px solid var(--btn-cream-bottom);
}
.btn--secondary-dark:hover { background-color: rgba(255, 226, 174, 0.12); transform: translateY(-2px); }
.btn--secondary-dark:active { transform: none; }

/* ---- Text link (inline, optional 18px arrow) ---- */
.btn--text,
.btn--text-dark {
  --btn-fg: var(--btn-red);
  --btn-arrow: 18px;
  min-height: 44px;
  padding: 0;
  gap: 8px;
  border-radius: 4px;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1.5px;
}
.btn--text-dark { --btn-fg: var(--btn-cream-bottom); --btn-focus: var(--btn-focus-dark); }
.btn--text:hover,
.btn--text-dark:hover { text-decoration-thickness: 2.5px; }
.btn--text:hover > svg,
.btn--text-dark:hover > svg { transform: translateX(4px); }

/* ---- Disabled: aria-disabled="true" (or the disabled attribute) ---- */
.btn[aria-disabled="true"],
.btn[aria-disabled="true"]:hover,
.btn:disabled {
  --btn-fg: #6B5B52;
  background: #E6DED8;
  border-color: #E6DED8;
  box-shadow: none;
  transform: none;
  cursor: not-allowed;
  pointer-events: none;
}
.btn[aria-disabled="true"] .btn__chip,
.btn:disabled .btn__chip { background: #6B5B52; color: #E6DED8; transform: none; }
.btn[aria-disabled="true"]::after,
.btn:disabled::after { display: none; }
.btn[aria-disabled="true"] > svg,
.btn:disabled > svg { transform: none; }

/* ---- Loading: aria-busy="true". Label stays in the DOM (width locked), a
   spinner is centred over it, clicks are ignored. ---- */
.btn[aria-busy="true"] {
  color: transparent;
  pointer-events: none;
  cursor: progress;
}
.btn[aria-busy="true"] > svg,
.btn[aria-busy="true"] > .btn__chip { visibility: hidden; }
.btn[aria-busy="true"]::after { display: none; }
.btn[aria-busy="true"]::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  box-sizing: border-box;
  border: 2.5px solid var(--btn-fg);
  border-right-color: transparent;
  border-radius: 50%;
  animation: btn-spin 0.8s linear infinite;
}
@keyframes btn-spin { to { transform: rotate(360deg); } }

/* ---- Reduced motion: colour changes only ---- */
@media (prefers-reduced-motion: reduce) {
  .btn, .btn > svg, .btn__chip { transition: none; }
  .btn:hover, .btn:active { transform: none; }
  .btn--primary:hover > svg,
  .btn--primary:focus-visible > svg,
  .btn--text:hover > svg,
  .btn--text-dark:hover > svg,
  .btn--primary-dark:hover .btn__chip,
  .btn--primary-dark:focus-visible .btn__chip { transform: none; }
  .btn--primary-dark::after { display: none; }
  .btn[aria-busy="true"]::before { animation-duration: 2.4s; }
}