/* ==========================================================================
   Components: buttons, chips, brand wordmark, floating nav, mobile menu
   ========================================================================== */

/* ---- Buttons ---------------------------------------------------------- */
.btn {
  --btn-h: 52px;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: var(--btn-h);
  padding: 0 26px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  white-space: nowrap;
  transition: background-color var(--dur-fast), border-color var(--dur-fast), color var(--dur-fast);
}
.btn__inner { display: inline-flex; align-items: center; gap: 10px; pointer-events: none; }
.btn svg { width: 16px; height: 16px; flex: none; }

.btn--primary {
  background: var(--color-button-primary);
  color: var(--color-button-text);
  box-shadow: var(--inset-btn);
}
.btn--primary:hover { background: var(--color-button-primary-hover); }
.btn--primary .btn__arrow { transition: transform 0.35s var(--ease-out); }
.btn--primary:hover .btn__arrow { transform: translateX(3px) rotate(-45deg); }

.btn--secondary {
  background: var(--color-white);
  color: var(--ink);
  border: 1px solid var(--color-gray-medium);
}
.btn--secondary:hover { border-color: var(--ink); background: var(--ink); color: var(--on-ink); }

.btn--sm { --btn-h: 42px; padding: 0 18px; font-size: 0.875rem; }

/* ---- Chips ------------------------------------------------------------ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 10px;
  border-radius: var(--radius-pill);
  border: var(--hairline);
  background: rgba(255, 255, 255, 0.85);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font-size: var(--fs-small);
  color: var(--ink-80);
}
.chip__pulse {
  position: relative;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.chip__pulse::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.4s var(--ease-out) infinite;
}
@keyframes pulse {
  0% { transform: scale(1); opacity: 0.6; }
  80%, 100% { transform: scale(3); opacity: 0; }
}

/* ---- Brand wordmark --------------------------------------------------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
}
.brand__mark { width: 30px; height: 30px; flex: none; }
.brand__word span { font-weight: 400; color: var(--muted); }

/* ---- Floating pill navbar --------------------------------------------- */
.site-header {
  position: fixed;
  top: calc(env(safe-area-inset-top, 0px) + 14px);
  left: 0; right: 0;
  z-index: 100;
  padding-left: var(--gutter);
  padding-right: var(--gutter-r);
  pointer-events: none;
  transition: transform 0.5s var(--ease-out);
}
.site-header.is-hidden { transform: translateY(calc(-100% - 28px)); }
.site-header.menu-open { transform: none; }

.nav-pill {
  pointer-events: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1080px;
  margin-inline: auto;
  padding: 7px 7px 7px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.78);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  backdrop-filter: saturate(160%) blur(16px);
  transition: background-color 0.4s, box-shadow 0.4s;
}
.site-header.is-scrolled .nav-pill { background: rgba(255, 255, 255, 0.94); box-shadow: var(--shadow-card); }

.nav-links {
  display: none;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  position: relative;
  display: block;
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--ink-80);
  transition: background-color var(--dur-fast), color var(--dur-fast);
}
.nav-links a:hover { background: var(--ink-4); color: var(--ink); }
.nav-links a[aria-current="true"]::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 3px;
  width: 4px; height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background: var(--accent);
}

.nav-actions { display: flex; align-items: center; gap: 6px; }
.nav-cta { display: none; }

.menu-toggle {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--on-ink);
}
.menu-toggle__lines { position: relative; width: 16px; height: 10px; }
.menu-toggle__lines span {
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.45s var(--ease-out), top 0.45s var(--ease-out);
}
.menu-toggle__lines span:first-child { top: 1px; }
.menu-toggle__lines span:last-child { top: 7.5px; }
.menu-toggle[aria-expanded="true"] .menu-toggle__lines span:first-child { top: 4.25px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle__lines span:last-child { top: 4.25px; transform: rotate(-45deg); }

@media (min-width: 900px) {
  .nav-links { display: flex; }
  .nav-cta { display: inline-flex; }
  .menu-toggle { display: none; }
}

/* ---- Full-screen mobile menu ------------------------------------------ */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 95;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: calc(env(safe-area-inset-top, 0px) + 104px);
  padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 28px);
  padding-left: calc(var(--gutter) + 8px);
  padding-right: calc(var(--gutter-r) + 8px);
  background: var(--bg);
  overflow: hidden;
}
.mobile-menu .wash { opacity: 0.55; }
.mobile-menu__list { position: relative; display: grid; gap: 4px; }
.mobile-menu__list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-block: 10px;
  border-bottom: var(--hairline);
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 1.6rem + 4vw, 3.5rem);
  font-weight: 500;
  letter-spacing: var(--track-display);
  line-height: 1.05;
}
.mobile-menu__list a small {
  font-family: var(--font-body);
  font-size: var(--fs-caption);
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted);
  text-align: right;
}
.mobile-menu__mask { display: block; overflow: hidden; padding-right: 0.08em; }
.mobile-menu__foot { position: relative; display: grid; gap: 18px; }
.mobile-menu__foot .btn { width: 100%; }
.mobile-menu__contact { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: var(--fs-small); color: var(--muted); }

@media (min-width: 900px) { .mobile-menu { display: none !important; } }
.mobile-menu__mask > span { display: inline-block; }

/* ---- Button variants for charcoal sections ---------------------------- */
.btn--cream {
  background: var(--on-ink);
  color: var(--ink);
  box-shadow: inset 0 1px 0 #FFFFFF, inset 0 -1px 0 rgba(43, 43, 43, 0.12);
}
.btn--cream:hover { background: var(--color-gray-light); }
.btn--cream .btn__arrow { transition: transform 0.35s var(--ease-out); }
.btn--cream:hover .btn__arrow { transform: translateX(3px) rotate(-45deg); }
.btn--ghost-dark {
  color: var(--on-ink);
  border: 1px solid rgba(255, 255, 255, 0.32);
}
.btn--ghost-dark:hover { border-color: var(--on-ink); background: var(--cream-12); }
.btn--ghost-dark svg { width: 18px; height: 18px; }
.btn--xl { --btn-h: 64px; padding: 0 34px; font-size: 1.0625rem; }

/* ---- Text links ------------------------------------------------------- */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--ink-40);
  padding-bottom: 2px;
  transition: border-color var(--dur-fast), gap 0.35s var(--ease-out);
}
.link-arrow:hover { border-color: var(--accent); gap: 12px; }
.link-underline { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; }

/* ---- Tags ------------------------------------------------------------- */
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.tags li {
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--ink-40);
  font-size: var(--fs-caption);
  color: var(--ink-80);
}

/* ---- Section header --------------------------------------------------- */
.section-head { display: grid; gap: 18px; max-width: 760px; margin-bottom: clamp(48px, 6vw, 80px); }
.section-head--center { margin-inline: auto; text-align: center; justify-items: center; }
.label--dark { color: var(--cream-60); }

/* ---- Brand on charcoal ------------------------------------------------ */
.brand--dark { color: var(--on-ink); }
.brand--dark .brand__word span { color: var(--cream-60); }

/* ---- Form fields (on charcoal) ---------------------------------------- */
.field { display: grid; gap: 8px; min-width: 0; }
.field label { font-size: var(--fs-small); font-weight: 500; color: var(--cream-60); }
.field input, .field select, .field textarea {
  width: 100%;
  min-height: 50px;
  padding: 12px 14px;
  border-radius: var(--radius-input);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  color: var(--on-ink);
  font: inherit;
  font-size: 1rem;
  transition: border-color var(--dur-fast), background-color var(--dur-fast);
}
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23FFFFFF' stroke-width='1.5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.field select option { color: var(--ink); background: var(--bg); }
.field textarea { resize: vertical; min-height: 120px; }
.field input::placeholder, .field textarea::placeholder { color: rgba(255, 255, 255, 0.45); }
.field input:hover, .field select:hover, .field textarea:hover { border-color: rgba(255, 255, 255, 0.4); }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible {
  outline: none;
  background: rgba(255, 255, 255, 0.09);
}
/* Errors keep a soft red: the one colour that carries meaning (always paired with text) */
.field [aria-invalid="true"] { border-color: #FF8FA3; }
.field__err { font-size: var(--fs-caption); color: #FF9FB0; }

html.has-cursor input, html.has-cursor textarea { cursor: text; }
html.has-cursor select, html.has-cursor label { cursor: pointer; }