/* ==========================================================================
   UI layer — controls, chrome, surfaces, overlays
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Buttons
   -------------------------------------------------------------------------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 0.95em 1.6em;
  border-radius: var(--r-pill);
  font-family: var(--font-display);
  font-size: var(--step-0);
  font-weight: 600;
  letter-spacing: -0.012em;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  isolation: isolate;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  transition:
    transform var(--t-base) var(--ease-out),
    box-shadow var(--t-base) var(--ease-out),
    background-color var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out),
    color var(--t-base) var(--ease-out);
}

/* Light sweep that crosses the button on hover */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    100deg,
    transparent 20%,
    rgba(255, 255, 255, 0.42) 50%,
    transparent 80%
  );
  transform: translateX(-120%);
  transition: transform 720ms var(--ease-out);
}

.btn:hover::after,
.btn:focus-visible::after {
  transform: translateX(120%);
}

.btn:active {
  transform: scale(0.975);
  transition-duration: 80ms;
}

/* Content sits above the ripple and sweep layers */
.btn > * {
  position: relative;
  z-index: 2;
}

.btn__icon {
  width: 1.05em;
  height: 1.05em;
  transition: transform var(--t-base) var(--ease-out);
}

.btn:hover .btn__icon--arrow {
  transform: translateX(4px);
}

.btn:hover .btn__icon--ne {
  transform: translate(3px, -3px);
}

/* Filled bone — the primary conversion action */
.btn--primary {
  background: var(--bone);
  color: var(--ink);
  box-shadow: var(--shadow-sm), 0 0 0 0 rgba(244, 241, 234, 0.25);
}

.btn--primary:hover {
  box-shadow: var(--shadow-md), 0 0 0 6px rgba(244, 241, 234, 0.09);
  transform: translateY(-2px);
}

/* Brass — used where the action should feel premium rather than urgent */
.btn--accent {
  background: linear-gradient(140deg, var(--brass-bright), var(--brass) 55%, var(--brass-deep));
  color: #1a1305;
  box-shadow: var(--shadow-sm);
}

.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), 0 14px 40px -14px rgba(201, 162, 90, 0.55);
}

/* Outlined, for secondary actions on dark backgrounds */
.btn--ghost {
  background: rgba(244, 241, 234, 0.03);
  color: var(--bone);
  border: 1px solid var(--hairline-strong);
  box-shadow: var(--inset-hi);
}

.btn--ghost:hover {
  background: rgba(244, 241, 234, 0.08);
  border-color: var(--hairline-bright);
  transform: translateY(-2px);
}

.btn--ghost::after {
  background: linear-gradient(100deg, transparent 20%, rgba(255, 255, 255, 0.12) 50%, transparent 80%);
}

/* Frosted, for use over photography */
.btn--glass {
  background: var(--glass);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  color: var(--bone);
  border: 1px solid var(--hairline-strong);
}

.btn--glass:hover {
  background: rgba(28, 33, 43, 0.85);
  border-color: var(--hairline-bright);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 0.7em 1.15em;
  font-size: var(--step--1);
}

/* Larger through padding rather than type size, so pairs of long labels still
   sit side by side in a hero column. */
.btn--lg {
  padding: 1.15em 1.85em;
  font-size: var(--step-0);
}

.btn--block {
  width: 100%;
}

.btn[disabled],
.btn[aria-disabled='true'] {
  opacity: 0.45;
  pointer-events: none;
}

/* Ripple element injected on pointer-down */
.btn__ripple {
  position: absolute;
  z-index: 1;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.22;
  transform: scale(0);
  pointer-events: none;
  animation: ripple 620ms var(--ease-out) forwards;
}

@keyframes ripple {
  to {
    transform: scale(2.6);
    opacity: 0;
  }
}

/* Inline text link with an underline that draws in */
.link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--bone);
  padding-block-end: 2px;
}

.link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(var(--link-scale, 0));
  transform-origin: left;
  transition: transform var(--t-base) var(--ease-out);
}

.link:hover {
  --link-scale: 1;
  color: var(--brass-bright);
}

.link:hover .btn__icon--arrow {
  transform: translateX(4px);
}

.link--brass {
  color: var(--brass);
}

.link--dim {
  color: var(--text-dim);
  font-weight: 500;
}

.link--dim:hover {
  color: var(--bone);
}

/* Circular icon button */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.85rem;
  height: 2.85rem;
  border-radius: 50%;
  border: 1px solid var(--hairline-strong);
  background: rgba(244, 241, 234, 0.04);
  color: var(--bone);
  box-shadow: var(--inset-hi);
  transition:
    background-color var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out),
    transform var(--t-base) var(--ease-out),
    color var(--t-base) var(--ease-out);
}

.icon-btn:hover {
  background: var(--bone);
  color: var(--ink);
  border-color: var(--bone);
  transform: translateY(-2px);
}

.icon-btn svg {
  width: 1.15rem;
  height: 1.15rem;
}

.icon-btn[disabled] {
  opacity: 0.3;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   2. Badges, chips, pills
   -------------------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.42em 0.9em;
  border-radius: var(--r-pill);
  border: 1px solid var(--hairline-strong);
  background: rgba(244, 241, 234, 0.04);
  box-shadow: var(--inset-hi);
  font-family: var(--font-mono);
  font-size: var(--step--2);
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--bone-soft);
  white-space: nowrap;
}

.badge svg {
  width: 0.95em;
  height: 0.95em;
  color: var(--steel-bright);
}

.badge--brass {
  border-color: rgba(201, 162, 90, 0.35);
  background: rgba(201, 162, 90, 0.09);
  color: var(--brass-bright);
}

.badge--brass svg {
  color: var(--brass);
}

.badge--solid {
  background: var(--bone);
  color: var(--ink);
  border-color: var(--bone);
}

/* Small live indicator dot */
.dot-live {
  position: relative;
  width: 0.5em;
  height: 0.5em;
  border-radius: 50%;
  background: var(--success);
  flex: none;
}

.dot-live::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1px solid var(--success);
  animation: pulse-ring 2.4s var(--ease-out) infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.6);
    opacity: 0.9;
  }
  70%,
  100% {
    transform: scale(1.9);
    opacity: 0;
  }
}

/* Star rating */
.stars {
  display: inline-flex;
  gap: 0.12em;
  color: var(--brass);
}

.stars svg {
  width: 1em;
  height: 1em;
}

.stars--sm {
  font-size: 0.7rem;
}

/* --------------------------------------------------------------------------
   3. Surfaces
   -------------------------------------------------------------------------- */

.surface {
  position: relative;
  background: var(--ink-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  box-shadow: var(--inset-hi);
  overflow: hidden;
}

.surface--raised {
  background: linear-gradient(168deg, var(--ink-card-hi), var(--ink-card) 62%);
  box-shadow: var(--inset-hi), var(--shadow-md);
}

.surface--flush {
  border-radius: 0;
  border: 0;
}

/* Cursor-tracked highlight. --spot-x/y are written by JS. */
.spotlight {
  position: relative;
  isolation: isolate;
}

.spotlight::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-slow) var(--ease-out);
  background: radial-gradient(
    380px circle at var(--spot-x, 50%) var(--spot-y, 0%),
    rgba(91, 150, 192, 0.16),
    transparent 68%
  );
}

.spotlight:hover::before,
.spotlight:focus-within::before {
  opacity: 1;
}

/* Hairline that brightens along the top edge on hover */
.surface--lift {
  transition:
    transform var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out),
    box-shadow var(--t-base) var(--ease-out);
}

.surface--lift:hover {
  transform: translateY(-5px);
  border-color: var(--hairline-strong);
  box-shadow: var(--inset-hi), var(--shadow-lg);
}

/* 3D tilt container. --tilt-x/y written by JS. */
.tilt {
  transform: perspective(1100px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg));
  transform-style: preserve-3d;
  transition: transform 420ms var(--ease-out);
}

.tilt.is-tilting {
  transition: transform 90ms linear;
}

/* --------------------------------------------------------------------------
   4. Header
   -------------------------------------------------------------------------- */

.header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition:
    transform 420ms var(--ease-out),
    opacity var(--t-base) var(--ease-out),
    background-color var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out),
    height var(--t-base) var(--ease-out);
  border-block-end: 1px solid transparent;
}

.header::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(8, 9, 12, 0.72);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
}

.header.is-scrolled {
  --header-h: 66px;
  border-block-end-color: var(--hairline);
}

.header.is-scrolled::before {
  opacity: 1;
}

/* Slide the bar away while scrolling down, bring it back on scroll up */
.header.is-hidden {
  transform: translateY(-102%);
}

/* The header is its own stacking context, so the close toggle only clears the
   mobile overlay if the whole bar is lifted above it */
.header.is-above-menu {
  z-index: calc(var(--z-overlay) + 1);
}

.header__inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.5rem);
}

.header__brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex: none;
  margin-inline-end: auto;
}

/* The horizontal lockup rebuilt from the client artwork, so the bar carries the
   real typeface rather than a stand-in */
.header__logo {
  height: clamp(26px, 2.9vw, 34px);
  width: auto;
  transition: transform var(--t-base) var(--ease-spring);
}

.header__brand:hover .header__logo {
  transform: scale(1.03);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav-link {
  position: relative;
  padding: 0.55rem 0.85rem;
  border-radius: var(--r-pill);
  font-family: var(--font-display);
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--text-dim);
  transition: color var(--t-base) var(--ease-out);
}

.nav-link:hover {
  color: var(--bone);
}

/* Pill that slides between items; positioned by JS */
.nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(244, 241, 234, 0.07);
  opacity: 0;
  transform: scale(0.9);
  transition:
    opacity var(--t-fast) var(--ease-out),
    transform var(--t-fast) var(--ease-out);
  z-index: -1;
}

.nav-link:hover::before {
  opacity: 1;
  transform: scale(1);
}

.nav-link[aria-current='page'] {
  color: var(--bone);
}

.nav-link[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0.15rem;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--brass);
  transform: translateX(-50%);
}

/* ---------- Services dropdown ---------- */

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-item .nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-link__caret {
  width: 0.75rem;
  height: 0.75rem;
  opacity: 0.6;
  transition:
    transform var(--t-base) var(--ease-out),
    opacity var(--t-base) var(--ease-out);
}

.nav-item.is-open .nav-link__caret {
  transform: rotate(180deg);
  opacity: 1;
}

/* Sits over the caret so keyboards and touch can open the panel without
   losing the plain link behind it */
.nav-item__toggle {
  position: absolute;
  top: 50%;
  right: 0.25rem;
  width: 1.6rem;
  height: 1.9rem;
  transform: translateY(-50%);
  background: none;
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
}

.nav-item__toggle:focus-visible {
  outline: 2px solid var(--brass-bright);
  outline-offset: 2px;
}

.nav-menu {
  position: absolute;
  top: calc(100% + 0.55rem);
  left: 50%;
  z-index: 60;
  width: min(23rem, calc(100vw - 2rem));
  padding: 0.5rem;
  border-radius: var(--r-lg);
  border: 1px solid var(--hairline-strong);
  background: rgba(14, 16, 21, 0.92);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -0.5rem);
  transition:
    opacity var(--t-base) var(--ease-out),
    transform var(--t-base) var(--ease-spring),
    visibility var(--t-base) linear;
}

/* Bridges the gap under the trigger so the pointer can travel into the panel */
.nav-menu::before {
  content: '';
  position: absolute;
  inset: -0.7rem 0 100% 0;
}

.nav-item.is-open .nav-menu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.nav-menu__item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.7rem;
  border-radius: var(--r-md);
  opacity: 0;
  transform: translateY(-4px);
  transition:
    background var(--t-fast) var(--ease-out),
    opacity var(--t-base) var(--ease-out),
    transform var(--t-base) var(--ease-out);
}

.nav-item.is-open .nav-menu__item {
  opacity: 1;
  transform: none;
}

.nav-menu__item:nth-child(1) {
  transition-delay: 30ms;
}
.nav-menu__item:nth-child(2) {
  transition-delay: 60ms;
}
.nav-menu__item:nth-child(3) {
  transition-delay: 90ms;
}
.nav-menu__item:nth-child(4) {
  transition-delay: 120ms;
}
.nav-menu__item:nth-child(5) {
  transition-delay: 150ms;
}

.nav-menu__item:hover,
.nav-menu__item:focus-visible {
  background: rgba(244, 241, 234, 0.06);
  outline: none;
}

.nav-menu__item:focus-visible {
  box-shadow: inset 0 0 0 1px var(--brass);
}

.nav-menu__icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--hairline);
  background: rgba(91, 150, 192, 0.1);
  color: var(--steel-bright);
  transition:
    color var(--t-fast) var(--ease-out),
    border-color var(--t-fast) var(--ease-out);
}

.nav-menu__icon svg {
  width: 1.05rem;
  height: 1.05rem;
}

.nav-menu__item:hover .nav-menu__icon {
  color: var(--brass-bright);
  border-color: rgba(201, 162, 90, 0.4);
}

.nav-menu__title {
  display: block;
  font-family: var(--font-display);
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--bone);
}

.nav-menu__desc {
  display: block;
  margin-block-start: 1px;
  font-size: 0.72rem;
  line-height: 1.35;
  color: var(--text-muted);
}

.nav-menu__all {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-block-start: 0.35rem;
  padding: 0.7rem;
  border-block-start: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass);
  transition: color var(--t-fast) var(--ease-out);
}

.nav-menu__all svg {
  width: 0.9rem;
  height: 0.9rem;
  transition: transform var(--t-base) var(--ease-spring);
}

.nav-menu__all:hover {
  color: var(--brass-bright);
}

.nav-menu__all:hover svg {
  transform: translateX(4px);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: none;
}

/* Phone number treated as a first-class action */
.header__phone {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--bone);
  border: 1px solid var(--hairline);
  transition:
    border-color var(--t-base) var(--ease-out),
    background-color var(--t-base) var(--ease-out);
}

.header__phone svg {
  width: 0.95rem;
  height: 0.95rem;
  color: var(--steel-bright);
}

.header__phone:hover {
  border-color: var(--hairline-bright);
  background: rgba(244, 241, 234, 0.05);
}

/* Hamburger / close toggle */
.menu-toggle {
  display: none;
  position: relative;
  width: 2.85rem;
  height: 2.85rem;
  border-radius: 50%;
  border: 1px solid var(--hairline-strong);
  background: rgba(244, 241, 234, 0.04);
  z-index: calc(var(--z-overlay) + 1);
}

.menu-toggle__bar {
  position: absolute;
  left: 50%;
  width: 1.05rem;
  height: 1.5px;
  border-radius: 2px;
  background: var(--bone);
  transform: translateX(-50%);
  transition:
    transform 380ms var(--ease-spring),
    opacity 200ms var(--ease-out),
    width 380ms var(--ease-spring);
}

.menu-toggle__bar:nth-child(1) {
  top: calc(50% - 5px);
}
.menu-toggle__bar:nth-child(2) {
  top: 50%;
  width: 0.7rem;
  margin-inline-start: -0.175rem;
}
.menu-toggle__bar:nth-child(3) {
  top: calc(50% + 5px);
}

.menu-toggle[aria-expanded='true'] .menu-toggle__bar:nth-child(1) {
  transform: translateX(-50%) translateY(5px) rotate(45deg);
}
.menu-toggle[aria-expanded='true'] .menu-toggle__bar:nth-child(2) {
  opacity: 0;
  width: 0;
}
.menu-toggle[aria-expanded='true'] .menu-toggle__bar:nth-child(3) {
  transform: translateX(-50%) translateY(-5px) rotate(-45deg);
}

/* The last stretch before the nav folds away is the tightest the bar ever gets */
@media (max-width: 1180px) {
  .header__logo {
    height: 28px;
  }

  .nav-link {
    padding-inline: 0.6rem;
  }
}

@media (max-width: 1080px) {
  .header__nav,
  .header__actions .btn,
  .header__phone {
    display: none;
  }

  .header__logo {
    height: clamp(26px, 6vw, 32px);
  }

  .menu-toggle {
    display: block;
  }
}

/* --------------------------------------------------------------------------
   5. Mobile menu overlay
   -------------------------------------------------------------------------- */

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  display: grid;
  grid-template-rows: auto 1fr auto;
  background: var(--ink);
  visibility: hidden;
  opacity: 0;
  transition:
    opacity 380ms var(--ease-out),
    visibility 380ms;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.mobile-menu::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -25%;
  width: 70vw;
  height: 70vw;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91, 150, 192, 0.22), transparent 66%);
  filter: blur(70px);
  pointer-events: none;
}

.mobile-menu.is-open {
  visibility: visible;
  opacity: 1;
}

.mobile-menu__head {
  height: var(--header-h);
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
}

.mobile-menu__head img {
  height: 32px;
  width: auto;
}

.mobile-menu__body {
  padding: clamp(1rem, 5vw, 2.5rem) var(--gutter);
  display: grid;
  align-content: center;
  gap: 0.15rem;
  position: relative;
}

.mobile-menu__link {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-block: clamp(0.55rem, 2.2vw, 0.9rem);
  border-block-end: 1px solid var(--hairline);
  font-family: var(--font-display);
  font-size: var(--step-4);
  font-weight: 600;
  letter-spacing: -0.035em;
  color: var(--bone);
  /* Each link is staggered in by --i set inline */
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 520ms var(--ease-out),
    transform 520ms var(--ease-out),
    color var(--t-base) var(--ease-out);
  transition-delay: calc(90ms + var(--i, 0) * 55ms);
}

.mobile-menu.is-open .mobile-menu__link {
  opacity: 1;
  transform: none;
}

.mobile-menu__link:hover,
.mobile-menu__link[aria-current='page'] {
  color: var(--brass-bright);
}

.mobile-menu__link .mono {
  font-size: var(--step--2);
  color: var(--text-faint);
  letter-spacing: 0.08em;
}

/* Service shortcuts tucked under the Services row */
.mobile-menu__link:has(+ .mobile-menu__sub) {
  border-block-end: 0;
}

.mobile-menu__sub {
  display: grid;
  padding-block: 0.15rem 0.7rem;
  padding-inline-start: calc(var(--step--2) + 1.9rem);
  border-block-end: 1px solid var(--hairline);
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 520ms var(--ease-out),
    transform 520ms var(--ease-out);
  transition-delay: calc(120ms + var(--i, 0) * 55ms);
}

.mobile-menu.is-open .mobile-menu__sub {
  opacity: 1;
  transform: none;
}

.mobile-menu__sub a {
  padding-block: 0.34rem;
  font-size: var(--step--1);
  color: var(--text-dim);
  transition: color var(--t-fast) var(--ease-out);
}

.mobile-menu__sub a::before {
  content: '—';
  margin-inline-end: 0.5rem;
  color: var(--brass);
  opacity: 0.55;
}

.mobile-menu__sub a:hover {
  color: var(--brass-bright);
}

.mobile-menu__foot {
  padding: var(--gutter);
  padding-block-end: max(var(--gutter), env(safe-area-inset-bottom));
  display: grid;
  gap: 0.8rem;
  border-block-start: 1px solid var(--hairline);
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 520ms var(--ease-out) 320ms,
    transform 520ms var(--ease-out) 320ms;
}

.mobile-menu.is-open .mobile-menu__foot {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   6. Scroll progress + back to top
   -------------------------------------------------------------------------- */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  z-index: calc(var(--z-header) + 5);
  transform-origin: left;
  transform: scaleX(var(--progress, 0));
  background: linear-gradient(90deg, var(--steel-deep), var(--steel-bright) 45%, var(--brass));
  pointer-events: none;
}

.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: var(--z-sticky);
  opacity: 0;
  transform: translateY(14px) scale(0.9);
  pointer-events: none;
  transition:
    opacity var(--t-base) var(--ease-out),
    transform var(--t-base) var(--ease-out);
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.to-top.is-visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

@media (max-width: 700px) {
  /* Keep clear of the sticky action bar */
  .to-top {
    bottom: calc(4.9rem + env(safe-area-inset-bottom));
  }
}

/* --------------------------------------------------------------------------
   7. Custom cursor (fine pointers only)
   -------------------------------------------------------------------------- */

.cursor,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-cursor);
  pointer-events: none;
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
  will-change: transform;
}

.cursor {
  width: 6px;
  height: 6px;
  margin: -3px 0 0 -3px;
  background: var(--bone);
}

.cursor-ring {
  width: 34px;
  height: 34px;
  margin: -17px 0 0 -17px;
  border: 1px solid rgba(244, 241, 234, 0.42);
  display: grid;
  place-items: center;
  transition:
    opacity var(--t-base) var(--ease-out),
    width 320ms var(--ease-out),
    height 320ms var(--ease-out),
    margin 320ms var(--ease-out),
    background-color 320ms var(--ease-out),
    border-color 320ms var(--ease-out);
}

.cursor-ring__label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  opacity: 0;
  transform: scale(0.6);
  transition:
    opacity 220ms var(--ease-out),
    transform 220ms var(--ease-out);
  white-space: nowrap;
}

html.has-cursor .cursor,
html.has-cursor .cursor-ring {
  opacity: 1;
}

/* Hovering something interactive */
html.cursor-hover .cursor-ring {
  width: 52px;
  height: 52px;
  margin: -26px 0 0 -26px;
  border-color: rgba(244, 241, 234, 0.8);
  background: rgba(244, 241, 234, 0.08);
}

html.cursor-hover .cursor {
  opacity: 0.4;
}

/* Hovering a labelled target such as a gallery tile or comparison slider */
html.cursor-label .cursor-ring {
  width: 74px;
  height: 74px;
  margin: -37px 0 0 -37px;
  background: var(--bone);
  border-color: var(--bone);
}

html.cursor-label .cursor {
  opacity: 0;
}

html.cursor-label .cursor-ring__label {
  opacity: 1;
  transform: none;
}

@media (hover: none), (pointer: coarse) {
  .cursor,
  .cursor-ring {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   8. Sticky mobile action bar
   -------------------------------------------------------------------------- */

.action-bar {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: var(--z-sticky);
  display: none;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem;
  padding-block-end: max(0.6rem, env(safe-area-inset-bottom));
  background: rgba(8, 9, 12, 0.86);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-block-start: 1px solid var(--hairline);
  transform: translateY(110%);
  transition: transform 420ms var(--ease-out);
}

.action-bar.is-visible {
  transform: none;
}

.action-bar .btn {
  flex: 1;
  padding-inline: 0.75rem;
  font-size: var(--step--1);
}

@media (max-width: 700px) {
  .action-bar {
    display: flex;
  }

  /* Stop the bar covering page content */
  body {
    padding-block-end: 4.4rem;
  }
}

/* --------------------------------------------------------------------------
   9. Forms
   -------------------------------------------------------------------------- */

.field {
  position: relative;
  display: grid;
  gap: 0.45rem;
}

.field__label {
  font-family: var(--font-display);
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--bone-soft);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.field__label .req {
  color: var(--brass);
  font-size: 0.85em;
}

.field__hint {
  font-size: var(--step--2);
  color: var(--text-muted);
}

.input,
.textarea,
.select {
  width: 100%;
  padding: 0.9rem 1.05rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--hairline-strong);
  background: rgba(244, 241, 234, 0.03);
  color: var(--bone);
  font-size: var(--step-0);
  box-shadow: var(--inset-hi);
  transition:
    border-color var(--t-base) var(--ease-out),
    background-color var(--t-base) var(--ease-out),
    box-shadow var(--t-base) var(--ease-out);
}

.input::placeholder,
.textarea::placeholder {
  color: var(--text-faint);
}

.input:hover,
.textarea:hover,
.select:hover {
  border-color: var(--hairline-bright);
}

.input:focus,
.textarea:focus,
.select:focus {
  outline: none;
  border-color: var(--steel);
  background: rgba(91, 150, 192, 0.07);
  box-shadow: 0 0 0 3px rgba(91, 150, 192, 0.16);
}

.textarea {
  min-height: 8.5rem;
  resize: vertical;
  line-height: 1.6;
}

.select {
  appearance: none;
  padding-inline-end: 2.6rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a2aab7' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.05rem;
  cursor: pointer;
}

.select option {
  background: var(--ink-card);
  color: var(--bone);
}

.field.has-error .input,
.field.has-error .textarea,
.field.has-error .select {
  border-color: var(--danger);
  background: rgba(207, 107, 91, 0.07);
}

.field__error {
  display: none;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--step--2);
  color: var(--danger);
}

/* Direct child only, so a nested field keeps its own error to itself */
.field.has-error > .field__error {
  display: flex;
}

/* Follow-up question that unfolds when its option is picked */
.reveal-field {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition:
    grid-template-rows 420ms var(--ease-out),
    margin-block-start 420ms var(--ease-out),
    opacity 240ms var(--ease-out);
}

.reveal-field__inner {
  min-height: 0;
  overflow: hidden;
  /* Leaves room for focus rings to sit outside the collapsing box */
  overflow: clip;
  overflow-clip-margin: 5px;
  visibility: hidden;
}

.field:has(input[data-reveals]:checked) > .reveal-field,
.reveal-field.is-open {
  grid-template-rows: 1fr;
  margin-block-start: 0.35rem;
  opacity: 1;
}

.field:has(input[data-reveals]:checked) > .reveal-field > .reveal-field__inner,
.reveal-field.is-open > .reveal-field__inner {
  visibility: visible;
}

@media (prefers-reduced-motion: reduce) {
  .reveal-field {
    transition-duration: 1ms;
  }
}

/* Selectable option cards, used in place of radio buttons */
.choice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: 0.6rem;
}

.choice {
  position: relative;
  cursor: pointer;
}

.choice input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.choice__box {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  height: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--hairline-strong);
  background: rgba(244, 241, 234, 0.03);
  box-shadow: var(--inset-hi);
  font-family: var(--font-display);
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--bone-soft);
  transition:
    border-color var(--t-base) var(--ease-out),
    background-color var(--t-base) var(--ease-out),
    color var(--t-base) var(--ease-out),
    transform var(--t-base) var(--ease-out);
}

.choice__box svg {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--text-muted);
  transition: color var(--t-base) var(--ease-out);
}

.choice:hover .choice__box {
  border-color: var(--hairline-bright);
  background: rgba(244, 241, 234, 0.06);
  transform: translateY(-2px);
}

.choice input:checked + .choice__box {
  border-color: var(--steel);
  background: rgba(91, 150, 192, 0.14);
  color: var(--bone);
  box-shadow: var(--inset-hi), 0 0 0 1px var(--steel);
}

.choice input:checked + .choice__box svg {
  color: var(--steel-bright);
}

.choice input:focus-visible + .choice__box {
  outline: 2px solid var(--steel-bright);
  outline-offset: 2px;
}

/* Checkbox */
.check {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  cursor: pointer;
  font-size: var(--step--1);
  color: var(--text-dim);
  line-height: 1.5;
}

.check input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.check__box {
  flex: none;
  width: 1.2rem;
  height: 1.2rem;
  margin-block-start: 0.1rem;
  border-radius: 5px;
  border: 1px solid var(--hairline-bright);
  background: rgba(244, 241, 234, 0.03);
  display: grid;
  place-items: center;
  transition:
    background-color var(--t-fast) var(--ease-out),
    border-color var(--t-fast) var(--ease-out);
}

.check__box svg {
  width: 0.8rem;
  height: 0.8rem;
  color: var(--ink);
  opacity: 0;
  transform: scale(0.5);
  transition:
    opacity var(--t-fast) var(--ease-out),
    transform var(--t-fast) var(--ease-spring);
}

.check input:checked + .check__box {
  background: var(--brass);
  border-color: var(--brass);
}

.check input:checked + .check__box svg {
  opacity: 1;
  transform: none;
}

.check input:focus-visible + .check__box {
  outline: 2px solid var(--steel-bright);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   10. Toast
   -------------------------------------------------------------------------- */

.toast-stack {
  position: fixed;
  left: 50%;
  bottom: clamp(1.25rem, 4vw, 2.5rem);
  transform: translateX(-50%);
  z-index: var(--z-modal);
  display: grid;
  gap: 0.5rem;
  width: max-content;
  max-width: min(92vw, 30rem);
  pointer-events: none;
}

@media (max-width: 700px) {
  .toast-stack {
    bottom: calc(5.2rem + env(safe-area-inset-bottom));
  }
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.8rem 1.15rem;
  border-radius: var(--r-pill);
  background: rgba(244, 241, 234, 0.96);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: var(--step--1);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  animation: toast-in 420ms var(--ease-spring);
}

.toast svg {
  width: 1.05rem;
  height: 1.05rem;
  color: var(--steel-deep);
}

.toast.is-leaving {
  animation: toast-out 260ms var(--ease-out) forwards;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.94);
  }
}

@keyframes toast-out {
  to {
    opacity: 0;
    transform: translateY(10px) scale(0.96);
  }
}

/* --------------------------------------------------------------------------
   11. Lightbox
   -------------------------------------------------------------------------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  grid-template-rows: auto 1fr auto;
  background: rgba(4, 5, 7, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 320ms var(--ease-out),
    visibility 320ms;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

/* The header would otherwise show through the backdrop, directly behind the
   lightbox's own close button */
body:has(.lightbox.is-open) .header {
  opacity: 0;
  pointer-events: none;
}

.lightbox__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: clamp(0.75rem, 2vw, 1.4rem) var(--gutter);
}

.lightbox__count {
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.lightbox__stage {
  display: grid;
  place-items: center;
  padding-inline: var(--gutter);
  min-height: 0;
  position: relative;
}

/* Width is derived from the photo's ratio and the measured height of the stage
   row (written to --stage-h by the script), so a tall photo fits between the
   bar and the caption rather than running underneath them. */
.lightbox__frame {
  width: min(100%, 1180px, calc(var(--stage-h, 60vh) * var(--ratio, 1.5)));
  max-height: 100%;
  transform: scale(0.96);
  opacity: 0;
  transition:
    transform 420ms var(--ease-out),
    opacity 320ms var(--ease-out);
}

.lightbox.is-open .lightbox__frame {
  transform: none;
  opacity: 1;
}

.lightbox__foot {
  padding: clamp(0.9rem, 2.4vw, 1.75rem) var(--gutter);
  display: grid;
  gap: 0.9rem;
  justify-items: center;
  text-align: center;
}

.lightbox__nav {
  display: flex;
  gap: 0.6rem;
}

.lightbox__title {
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.lightbox__desc {
  max-width: 56ch;
  font-size: var(--step--1);
  color: var(--text-dim);
}