/* shell.css — the persistent layout: rail + pane, and the mobile drawer.
   This is identical on every page. Only the pane changes. */

/* ---- Base --------------------------------------------------------------- */
body {
  background: var(--ink);
  color: var(--chalk);
  font-family: var(--font-body);
  font-size: var(--step-0);
  font-weight: 400;
}

/* Keyboard-only skip link. */
.skip-link {
  position: absolute;
  left: var(--space-2xs);
  top: -5rem;
  z-index: 100;
  background: var(--paper);
  color: var(--ink);
  padding: var(--space-2xs) var(--space-s);
  font-family: var(--font-display);
  font-weight: 500;
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus {
  top: var(--space-2xs);
}

/* ---- Shell grid --------------------------------------------------------- */
.shell {
  display: grid;
  grid-template-columns: var(--rail-width) 1fr;
  min-height: 100dvh;
}

.rail {
  position: sticky;
  top: 0;
  height: 100dvh;
  overflow-y: auto;
  overscroll-behavior: contain;
  border-right: 1px solid var(--moss);
  padding: var(--space-m);
  display: flex;
  flex-direction: column;
  gap: var(--space-l);
}

.pane {
  padding: var(--space-m);
  min-width: 0; /* load-bearing: lets grid children shrink. Do not remove. */
}

/* ---- Brand -------------------------------------------------------------- */
.rail__head {
  display: flex;
  flex-direction: column;
}
.rail__brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--step-1);
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--chalk);
}
/* Sized by max-height AND max-width so both shapes work: a square mark renders
   at its full height, a wide wordmark hits the rail width first and scales
   down proportionally. */
.brand-logo {
  display: block;
  max-height: 5.5rem;
  max-width: 100%;
  width: auto;
  height: auto;
}
.topbar__brand .brand-logo {
  max-height: 2.5rem; /* the mobile bar is slim */
}

/* A monochrome WHITE logo (the current one) would disappear on the light
   ground, so invert it there — white mark becomes a black mark. This assumes a
   monochrome logo; a full-colour logo would need a second light-mode upload
   instead of a filter. */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .brand-logo {
    filter: invert(1);
  }
}
:root[data-theme="light"] .brand-logo {
  filter: invert(1);
}
.rail__tagline {
  margin-block-start: var(--space-3xs);
  font-size: var(--step--1);
  color: var(--chalk-40);
}

/* Scroll-reveal: fade + short lift. Reduced-motion removes it entirely. */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Loading skeletons (used on the home grid and the project page). */
.skeleton {
  background: var(--ink-80);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}
.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.06), transparent);
  animation: skeleton-shimmer 1.4s ease-in-out infinite;
}
.skeleton--banner {
  aspect-ratio: 4 / 3;
  width: 100%;
}
.skeleton--line {
  height: 1.1em;
  width: 60%;
  margin-block-start: var(--space-s);
}
.skeleton--title {
  height: 1.8em;
  width: 80%;
  margin-block-start: var(--space-s);
}
@keyframes skeleton-shimmer {
  100% {
    transform: translateX(100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .skeleton::after {
    animation: none;
  }
}

/* ---- Nav ---------------------------------------------------------------- */
.rail__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  flex: 1 1 auto;
}

.rail__group {
  border-block-end: 1px solid var(--ink-80);
  padding-block-end: var(--space-2xs);
}

.rail__group-label {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2xs);
  padding-block: var(--space-2xs);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-0);
  color: var(--chalk);
}
.rail__group-label::-webkit-details-marker {
  display: none;
}
.rail__group-label::after {
  content: "\25BE"; /* ▾ */
  font-size: 0.7em;
  color: var(--chalk-60);
  transition: transform var(--dur-fast) var(--ease-out);
}
.rail__group[open] > .rail__group-label::after {
  transform: rotate(180deg);
}

.rail__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xs);
  padding-block: var(--space-2xs) var(--space-xs);
}
.rail__list a {
  display: block;
  padding: var(--space-3xs) 0;
  font-size: var(--step--1);
  color: var(--chalk-60);
  transition: color var(--dur-fast) var(--ease-out);
}
.rail__list a:hover {
  color: var(--chalk);
}
.rail__list a.is-active {
  color: var(--accent-ink);
  font-weight: 500;
}

/* ---- Repeat client, nested inside a category ----------------------------
   The client name is a link to their client page; their projects hang off it on
   a rule, so two jobs for the same client read as one body of work instead of
   two unrelated entries. */
.rail__client + li,
li + .rail__client {
  margin-block-start: var(--space-2xs);
}
.rail__client-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2xs);
  padding: var(--space-3xs) 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step--1);
  letter-spacing: 0.02em;
  color: var(--chalk);
  transition: color var(--dur-fast) var(--ease-out);
}
.rail__client-label:hover {
  color: var(--accent-ink);
}
.rail__client-label.is-active {
  color: var(--accent-ink);
}
/* Project count. A plain numeral, so it never competes with the client name. */
.rail__client-count {
  flex: none;
  color: var(--chalk-40);
  font-variant-numeric: tabular-nums;
}
.rail__sublist {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xs);
  margin-inline-start: var(--space-2xs);
  padding-inline-start: var(--space-2xs);
  border-inline-start: 1px solid var(--ink-60);
}
.rail__sublist a {
  display: block;
  padding: var(--space-3xs) 0;
  font-size: var(--step--1);
  color: var(--chalk-60);
  transition: color var(--dur-fast) var(--ease-out);
}
.rail__sublist a:hover {
  color: var(--chalk);
}
.rail__sublist a.is-active {
  color: var(--accent-ink);
  font-weight: 500;
}

/* A category with no published work yet: dimmed label, muted note. */
.rail__group--empty > .rail__group-label {
  color: var(--chalk-40);
}
.rail__empty {
  padding-block: var(--space-2xs) var(--space-xs);
  font-size: var(--step--1);
  color: var(--chalk-40);
  font-style: italic;
}

/* Empty / error state for the nav (graceful degradation). */
.rail__msg {
  font-size: var(--step--1);
  color: var(--chalk-40);
}

/* Height animation for the disclosure. Progressive enhancement: browsers
   without ::details-content simply open instantly. No JS height hack. */
.rail__group::details-content {
  block-size: 0;
  overflow: hidden;
  transition: block-size var(--dur-base) var(--ease-out),
              content-visibility var(--dur-base) allow-discrete;
}
.rail__group[open]::details-content {
  block-size: auto;
}

/* ---- Foot --------------------------------------------------------------- */
.rail__foot {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  font-size: var(--step--1);
}
.rail__foot a {
  color: var(--chalk-60);
  transition: color var(--dur-fast) var(--ease-out);
}
.rail__foot a:hover {
  color: var(--chalk);
}
.rail__social {
  display: flex;
  gap: var(--space-s);
}
/* The clock was easy to miss at 40% opacity. Raised to the same contrast as the
   footer links and given a live dot, so it reads as current studio time rather
   than decoration. */
.rail__clock {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  margin-block-start: var(--space-2xs);
  font-size: var(--step--1);
  color: var(--chalk-60);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
.rail__clock::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-ink);
  flex: none;
  animation: clock-pulse 2.4s var(--ease-out) infinite;
}
@keyframes clock-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* Given a real button outline so it is discoverable as a control. Previously it
   read as another footer link and users did not know the theme could change. */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  align-self: flex-start;
  padding: var(--space-3xs) var(--space-2xs);
  border: 1px solid var(--chalk-40);
  border-radius: 2px;
  color: var(--chalk);
  font-size: var(--step--1);
  transition: color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    background-color var(--dur-fast) var(--ease-out);
}
.theme-toggle:hover {
  color: var(--ink);
  background: var(--accent-ink);
  border-color: var(--accent-ink);
}
.theme-toggle:focus-visible {
  outline: 2px solid var(--accent-ink);
  outline-offset: 2px;
}
.theme-toggle__icon {
  font-size: 1.1em;
  line-height: 1;
}

.rail__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  margin-block-start: var(--space-2xs);
  font-size: var(--step--1);
}
.rail__legal a {
  color: var(--chalk-40);
}
.rail__legal a:hover {
  color: var(--chalk-60);
}

/* ---- Cookie notice (site-wide) ------------------------------------------ */
.cookie-notice {
  position: fixed;
  inset-inline: var(--space-m);
  bottom: var(--space-m);
  z-index: 60;
  max-width: 34rem;
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-s);
  padding: var(--space-s);
  background: var(--ink-80);
  border: 1px solid var(--moss);
  border-radius: 2px;
  font-size: var(--step--1);
  color: var(--chalk-60);
}
.cookie-notice[hidden] {
  display: none;
}
.cookie-notice__text {
  flex: 1 1 16rem;
}
.cookie-notice__text a {
  color: var(--accent-ink);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}
.cookie-notice__accept {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--paper);
  font: inherit;
  font-weight: 500;
  padding: var(--space-3xs) var(--space-s);
  border-radius: 2px;
}
.cookie-notice__accept:hover {
  background: var(--chalk);
  border-color: var(--chalk);
}

/* ---- Mobile top bar + scrim (hidden on desktop) ------------------------- */
.topbar {
  display: none;
}
.scrim {
  display: none;
}

/* ---- Mobile: the rail becomes a drawer ---------------------------------- */
@media (max-width: 899.98px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-s);
    position: sticky;
    top: 0;
    z-index: 20;
    padding: var(--space-xs) var(--space-m);
    background: var(--ink);
    border-block-end: 1px solid var(--moss);
  }
  .topbar__brand {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: var(--step-1);
    line-height: 1;
    color: var(--chalk);
  }
  .topbar__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    margin-inline-end: calc(var(--space-2xs) * -1);
    color: var(--chalk);
  }
  .topbar__toggle svg {
    width: 1.5rem;
    height: 1.5rem;
  }

  .rail {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 40;
    width: min(82vw, 320px);
    height: 100dvh;
    background: var(--ink);
    transform: translateX(-100%);
    transition: transform var(--dur-base) var(--ease-out);
  }
  body.rail-open .rail {
    transform: none;
  }

  .scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 30;
    background: rgba(0, 0, 0, 0.6);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-base) var(--ease-out);
  }
  body.rail-open .scrim {
    opacity: 1;
    pointer-events: auto;
  }

  /* Lock background scroll while the drawer is open. */
  body.rail-open {
    overflow: hidden;
  }
}

/* Reduced motion: the drawer appears, it does not slide; the marker does not
   rotate. */
@media (prefers-reduced-motion: reduce) {
  .rail,
  .scrim,
  .skip-link,
  .rail__list a,
  .rail__sublist a,
  .rail__client-label,
  .rail__foot a {
    transition: none;
  }
  /* The dot still marks the clock, it just stops pulsing. */
  .rail__clock::before {
    animation: none;
  }
  .theme-toggle {
    transition: none;
  }
  .rail__group::details-content {
    transition: none;
  }
  .rail__group-label::after {
    transition: none;
  }
  .rail__group[open] > .rail__group-label::after {
    transform: none;
  }
}