/* ==========================================================================
   Calibre — interactive watch movements
   ========================================================================== */

:root {
  /* How wide the content is allowed to get. The three-column layout wants
     about 340 + a ~780 stage + 360; past that the side panels get stranded
     at the screen edges and the movement swims in empty space. The guide
     pages are prose and want to be narrower still — see .guide-page. */
  --page-max: 1680px;
  --page-pad: 26px;
  --accent: #c8a45c;
  --bg:        #0b0c0e;
  --bg-2:      #121417;
  --panel:     #16181c;
  --panel-2:   #1b1e23;
  --line:      #262a30;
  --line-soft: #1e2126;
  --ink:       #e8eaee;
  --ink-2:     #a8afb9;
  --ink-3:     #6f7883;
  --good:      #6fb08a;
  --warn:      #d8a34a;

  --sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --mono: "SF Mono", "Cascadia Mono", Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background:
    radial-gradient(1100px 700px at 50% -10%, #1a1d22 0%, transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0; font-weight: 500; letter-spacing: -0.01em; }

/* ---------------------------------------------------------------- top */

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  /* full-bleed background, content aligned to the same column as the page */
  padding: 18px max(var(--page-pad), calc((100% - var(--page-max)) / 2 + var(--page-pad)));
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(255,255,255,.025), transparent);
}

.brand { display: flex; align-items: baseline; gap: 12px; }
.brand .mark { color: var(--accent); align-self: center; display: flex; }
.wordmark {
  font-family: var(--serif); font-size: 25px; letter-spacing: .06em;
  color: var(--ink);
}
.strap {
  font-size: 12.5px; color: var(--ink-3); letter-spacing: .04em;
  border-left: 1px solid var(--line); padding-left: 12px;
}

.picker { display: flex; gap: 8px; flex-wrap: wrap; }

.cal-pill {
  --accent: #c8a45c;
  display: flex; flex-direction: column; align-items: flex-start; gap: 1px;
  padding: 7px 14px 8px;
  background: var(--panel); color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 3px; cursor: pointer;
  font-family: inherit; text-align: left;
  transition: border-color .18s, background .18s, transform .18s, color .18s;
}
.cal-pill:hover { border-color: #3a4048; color: var(--ink); transform: translateY(-1px); }
.cal-pill.on {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(255,255,255,.05), transparent), var(--panel-2);
  color: var(--ink);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent);
}
.cal-pill.on .cal-num { color: var(--accent); }
.cal-num { font-family: var(--mono); font-size: 15px; letter-spacing: .06em; }
.cal-tag { font-size: 10.5px; color: var(--ink-3); letter-spacing: .05em; text-transform: uppercase; }
.cal-pill.ghost { opacity: .4; cursor: default; border-style: dashed; }

/* ------------------------------------------------------------- layout */

.layout {
  display: grid;
  grid-template-columns: minmax(280px, 340px) minmax(420px, 1fr) minmax(290px, 360px);
  gap: 18px;
  padding: 18px var(--page-pad) 8px;
  align-items: start;
  max-width: var(--page-max);
  margin: 0 auto;
}

.col { display: flex; flex-direction: column; gap: 16px; min-width: 0; }

.card {
  background: linear-gradient(180deg, rgba(255,255,255,.018), transparent), var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  padding: 18px 18px 20px;
}

.card-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 10px; margin-bottom: 12px;
}
.card-head h3 { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); }
.dim { color: var(--ink-3); font-weight: 400; }

/* -------------------------------------------------------- calibre info */

.cal-head h2 { font-family: var(--serif); font-size: 27px; letter-spacing: .01em; }
.cal-years {
  margin: 2px 0 0; font-size: 11.5px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent);
}
.cal-blurb { margin: 14px 0 0; color: var(--ink-2); font-size: 13.6px; }

.specs {
  margin: 18px 0 0; padding: 14px 0 0;
  border-top: 1px solid var(--line-soft);
  display: grid; grid-template-columns: auto 1fr; gap: 5px 14px;
  font-size: 12.8px;
}
.specs dt { color: var(--ink-3); }
.specs dd { margin: 0; color: var(--ink); font-family: var(--mono); font-size: 12px; }

h3.sub {
  margin: 18px 0 8px; font-size: 11px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink-3);
}
.models { margin: 0; padding: 0; list-style: none; font-size: 12.8px; color: var(--ink-2); }
.models li { padding: 3px 0 3px 14px; position: relative; }
.models li::before {
  content: ''; position: absolute; left: 0; top: 11px;
  width: 5px; height: 5px; border: 1px solid var(--accent); border-radius: 50%;
}

/* -------------------------------------------------------- part detail */

.part-detail { min-height: 200px; }
.empty { margin: 0; color: var(--ink-3); font-size: 13px; }
/* the tray is a grid, so its placeholder has to span the row or it wraps into
   a single narrow column */
.tray .empty { grid-column: 1 / -1; }

.pd-head { display: flex; gap: 12px; align-items: flex-start; }
.pd-step {
  flex: none; width: 34px; height: 34px; display: grid; place-items: center;
  border: 1px solid var(--accent); border-radius: 50%;
  color: var(--accent); font-family: var(--mono); font-size: 14px;
}
.pd-title h3 { font-size: 17px; }
.pd-title .fr { margin: 0; font-style: italic; color: var(--ink-3); font-size: 12.5px; }

.pd-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0 0; }
.tag {
  font-size: 10.5px; letter-spacing: .06em; text-transform: uppercase;
  padding: 3px 8px; border: 1px solid var(--line); border-radius: 2px; color: var(--ink-3);
}
.tag.cat { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.tag.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, transparent); }

.pd-fn { margin: 14px 0 0; font-size: 13.4px; color: var(--ink-2); }

.pd-note {
  margin: 14px 0 0; padding: 11px 13px;
  background: var(--panel-2); border-left: 2px solid var(--line);
  border-radius: 0 3px 3px 0;
}
.pd-note h4 {
  font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 4px;
}
.pd-note p { margin: 0; font-size: 12.9px; color: var(--ink-2); }
.pd-note.out { border-left-color: #a8664a; }
.pd-note.in  { border-left-color: var(--good); }

.pd-tool { margin: 14px 0 0; font-size: 12.4px; color: var(--ink-3); }
.pd-tool strong { color: var(--ink-2); font-weight: 500; }

/* -------------------------------------------------------------- stage */

.stage-wrap {
  position: relative;
  background:
    radial-gradient(58% 48% at 50% 34%, rgba(214,182,120,.10), transparent 72%),
    radial-gradient(90% 70% at 50% 108%, rgba(120,140,170,.05), transparent 70%),
    linear-gradient(180deg, #171a1f 0%, #101317 55%, #0b0d10 100%);
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  padding: 12px 12px 10px;
  overflow: hidden;
}

/* vignette, so the movement sits in the frame rather than floating on it */
.stage-wrap::after {
  content: '';
  position: absolute; inset: 0;
  pointer-events: none;
  background: radial-gradient(72% 62% at 50% 44%, transparent 55%, rgba(0,0,0,.45) 100%);
}

.stage-head {
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; padding: 2px 6px 6px; min-height: 24px;
}
.next-label { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.nl-step {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .04em;
  color: #14161a; background: var(--accent);
  padding: 2px 7px; border-radius: 2px; white-space: nowrap;
}
.nl-name {
  font-size: 12.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--accent);
}
.nl-side {
  font-size: 10px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-3); border: 1px solid var(--line); border-radius: 2px; padding: 1px 6px;
}
.nl-side.dial { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }
.tip {
  font-size: 12px; color: var(--ink-2); font-family: var(--mono);
  opacity: 0; transition: opacity .16s; text-align: right;
}
.tip.on { opacity: 1; }

/* --- the 3D scene ---------------------------------------------------- */

.scene {
  position: relative;
  width: 100%;
  height: min(62vh, 560px);
  min-height: 380px;
  perspective: 1500px;
  perspective-origin: 50% 46%;
  cursor: grab;
  touch-action: none;
  overflow: hidden;
}
.scene.grabbing { cursor: grabbing; }
/* only ever grows the stage — short screens keep the original height */
@media (min-height: 900px) { .scene { height: min(62vh, 660px); } }

.world {
  position: absolute;
  left: 50%; top: 50%;
  width: 420px; height: 420px;
  margin-left: -210px; margin-top: -210px;
  transform-style: preserve-3d;
  transition: transform .85s cubic-bezier(.4,0,.2,1);
}
.scene.grabbing .world { transition: none; }

.part {
  position: absolute; inset: 0;
  width: 420px; height: 420px;
  transform-style: preserve-3d;
  transition: transform .55s cubic-bezier(.33,.9,.35,1), opacity .42s ease;
  will-change: transform;
}
.part.ref { pointer-events: none; }

.slice { position: absolute; inset: 0; transform-style: preserve-3d; }
.slice.body { pointer-events: none; }
.slice svg { display: block; overflow: visible; }

.part.is-fixed, .part.actionable { cursor: pointer; }

/* NB: `filter` on an element flattens it, which would collapse the extrusion
   inside a .part. So every filter here is applied to the face slice, which has
   no 3D children of its own, and never to .part itself. */
.part.hover .slice.face { filter: drop-shadow(0 0 7px rgba(232,192,122,.9)); }
.part.hl    .slice.face { filter: drop-shadow(0 0 11px rgba(232,192,122,1)); }

/* Every component casts onto whatever is under it, assembled or not.
   Without this the stack reads as flat decals however good the materials are —
   the contact shadow is what tells you a bridge sits above a wheel. */
.part:not(.hover):not(.hl):not(.is-step):not(.ref):not(.ground) .slice.face {
  filter: drop-shadow(0 1.5px 2px rgba(0,0,0,.55));
}
/* separated layers throw a longer, softer shadow */
.scene.exploded .part:not(.hover):not(.hl):not(.ref):not(.ground) .slice.face {
  filter: drop-shadow(0 9px 11px rgba(0,0,0,.5));
}

.scene.focused .part:not(.hl):not(.is-step):not(.gone):not(.ref):not(.blocker) { opacity: .28 !important; }

/* The part that is in the way, flashed when you try to reach past it. Red
   rather than the accent, so it never reads as "this is the next step". */
.part.blocker .slice.face {
  filter: drop-shadow(0 0 10px rgba(226,106,84,.95)) !important;
  animation: blockFlash 2s ease-out;
}
@keyframes blockFlash {
  0%, 100% { opacity: 1; }
  12%, 38%, 64% { opacity: .45; }
  25%, 51%, 77% { opacity: 1; }
}

/* --- the component this step refers to ------------------------------------
   A bright silhouette traced over the part, so there is never any doubt which
   piece the instruction is talking about. */
.slice.outline {
  opacity: 0;
  pointer-events: none;
  color: var(--accent);
  transition: opacity .25s ease;
}
.part.is-step .slice.outline {
  opacity: 1;
  animation: stepPulse 1.7s ease-in-out infinite;
}
@keyframes stepPulse {
  0%, 100% { opacity: .45; }
  50%      { opacity: 1; }
}
.part.is-step .slice.face {
  filter: drop-shadow(0 0 9px color-mix(in srgb, var(--accent) 85%, transparent));
}

/* a part waiting to be refitted, shown in the place it belongs */
.part.ghost .slice.body { opacity: .25; }
.part.ghost .slice.face { filter: saturate(.25) brightness(1.15); }

/* soft contact shadow on the far side of the stack */
.part.ground {
  pointer-events: none;
  background: radial-gradient(closest-side, rgba(0,0,0,.66), rgba(0,0,0,0) 70%);
  border-radius: 50%;
}

.dial-num {
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  font-weight: 600;
  letter-spacing: -0.02em;
}

@keyframes shakeit {
  0%,100% { margin-left: 0; }
  20% { margin-left: -5px; }
  40% { margin-left: 5px; }
  60% { margin-left: -3px; }
  80% { margin-left: 2px; }
}
.part.shake { animation: shakeit .38s; }

/* --- running escapement ---------------------------------------------- */

.geom { transform-box: view-box; }

@keyframes balOsc {
  0%   { transform: rotate(-250deg); }
  50%  { transform: rotate(250deg); }
  100% { transform: rotate(-250deg); }
}
@keyframes palOsc {
  0%,100% { transform: rotate(-7deg); }
  50%     { transform: rotate(7deg); }
}
@keyframes escStep { to { transform: rotate(-360deg); } }
@keyframes secSweep { to { transform: rotate(360deg); } }
@keyframes rotSwing {
  0%,100% { transform: rotate(-26deg); }
  50%     { transform: rotate(34deg); }
}

.scene.running .anim-balance { animation: balOsc .5s ease-in-out infinite; }
.scene.running .anim-pallet  { animation: palOsc .5s ease-in-out infinite; }
.scene.running .anim-escape  { animation: escStep 3.75s steps(15) infinite; }
.scene.running .anim-seconds { animation: secSweep 60s linear infinite; }
.scene.running .anim-rotor   { animation: rotSwing 5.5s ease-in-out infinite; }

@media (prefers-reduced-motion: reduce) {
  .world, .part { transition: none !important; }
  .scene.running * { animation: none !important; }
  /* the shake on a blocked part and the tray hover lift are motion too —
     the toast still says what is wrong, so nothing is lost by stilling them */
  .part.shake { animation: none !important; }
  .tray-card:hover { transform: none !important; }
  * { scroll-behavior: auto !important; }
}

/* ---- keyboard focus ---------------------------------------------------
   Buttons here carry custom borders and backgrounds, so the browser default
   ring is easy to lose against the dark panels. :focus-visible keeps it off
   for pointer users and makes it unmissable for keyboard ones. */
:where(button, a, input, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}
.cal-row:focus-visible { outline-offset: -2px; }
.scene:focus-visible { outline-offset: -3px; }

/* --- stage footer ----------------------------------------------------- */

.stage-foot { padding: 8px 6px 2px; display: flex; flex-direction: column; gap: 9px; }

.view-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.view-group { display: inline-flex; border: 1px solid var(--line); border-radius: 3px; overflow: hidden; }
.view-btn {
  padding: 4px 11px; background: var(--panel); border: 0; cursor: pointer;
  color: var(--ink-3); font-family: inherit; font-size: 11.5px;
  transition: background .15s, color .15s;
}
.view-btn + .view-btn { border-left: 1px solid var(--line); }
.view-btn:hover { background: var(--panel-2); color: var(--ink); }
/* a view button that stands on its own rather than inside a .view-group */
.view-btn.lone { border: 1px solid var(--line); border-radius: 3px; }
.cam-read { font-family: var(--mono); font-size: 10.5px; color: var(--ink-3); margin-left: auto; }

.slider { display: flex; align-items: center; gap: 12px; }
.slider-label {
  font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3);
  flex: none;
}
.slider input[type=range] { flex: 1; accent-color: var(--accent); height: 3px; }
.slider output {
  font-family: var(--mono); font-size: 11.5px; color: var(--ink-2);
  width: 40px; text-align: right;
}

/* ----------------------------------------------------------- controls */

.controls { display: flex; flex-direction: column; gap: 10px; }

.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 3px; overflow: hidden; width: fit-content; }
.dir-btn {
  padding: 8px 20px; background: var(--panel); border: 0; cursor: pointer;
  color: var(--ink-3); font-family: inherit; font-size: 12.5px;
  letter-spacing: .05em; transition: background .18s, color .18s;
}
.dir-btn + .dir-btn { border-left: 1px solid var(--line); }
.dir-btn:hover { color: var(--ink); }
.dir-btn.on { background: var(--accent); color: #14161a; font-weight: 500; }

.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }
.btn {
  padding: 9px 16px; border-radius: 3px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--line); color: var(--ink-2);
  font-family: inherit; font-size: 13px;
  transition: border-color .18s, color .18s, background .18s;
}
.btn:hover { border-color: #3d434b; color: var(--ink); }
.btn.primary {
  background: color-mix(in srgb, var(--accent) 16%, var(--panel));
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  color: var(--ink);
}
.btn.primary:hover { background: color-mix(in srgb, var(--accent) 26%, var(--panel)); }
.btn.ghost { background: transparent; font-size: 12.4px; }
.btn.on { border-color: var(--accent); color: var(--accent); }

.row-split { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.seg.wide .side-btn { padding: 8px 16px; }
.side-btn {
  padding: 8px 18px; background: var(--panel); border: 0; cursor: pointer;
  color: var(--ink-3); font-family: inherit; font-size: 12.5px;
  letter-spacing: .04em; transition: background .18s, color .18s;
}
.side-btn + .side-btn { border-left: 1px solid var(--line); }
.side-btn:hover { color: var(--ink); }
.side-btn.on { background: var(--accent); color: #14161a; font-weight: 500; }
.btn.flip { padding: 8px 14px; font-size: 12.5px; }

.side-note { display: none; border-left: 2px solid var(--warn); }
.side-note.on { display: block; }
.side-note h4 {
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--warn); margin-bottom: 7px;
}
.side-note p { margin: 0 0 8px; font-size: 13px; color: var(--ink-2); }
.side-note p.muted { font-size: 12.2px; color: var(--ink-3); margin-bottom: 0; }

.opts { display: flex; gap: 16px; flex-wrap: wrap; padding-top: 2px; }
.chk { display: inline-flex; align-items: center; gap: 7px; cursor: pointer; font-size: 12.4px; color: var(--ink-2); }
.chk input { accent-color: var(--accent); width: 14px; height: 14px; }
/* an option that does not apply to this calibre — quartz has no escapement */
.chk.disabled { cursor: not-allowed; color: var(--ink-3); opacity: .55; }
.chk.disabled input { cursor: not-allowed; }

.keys { margin: 2px 0 0; font-size: 11.5px; color: var(--ink-3); }
kbd {
  font-family: var(--mono); font-size: 10.5px;
  border: 1px solid var(--line); border-bottom-width: 2px;
  border-radius: 3px; padding: 1px 5px; color: var(--ink-2);
}

/* -------------------------------------------------------------- toast */

.toast {
  position: absolute; left: 50%; bottom: 58px; transform: translate(-50%, 8px);
  background: #22262c; border: 1px solid var(--line);
  border-left: 2px solid var(--warn);
  color: var(--ink); font-size: 12.7px;
  padding: 9px 15px; border-radius: 3px; max-width: 80%;
  opacity: 0; pointer-events: none; transition: opacity .22s, transform .22s;
  box-shadow: 0 10px 30px rgba(0,0,0,.5);
}
.toast.on { opacity: 1; transform: translate(-50%, 0); }

/* ----------------------------------------------------------- sequence */

.progress { height: 2px; background: var(--line-soft); border-radius: 2px; overflow: hidden; }
.progress-fill {
  height: 100%; width: 0; background: var(--accent);
  transition: width .4s cubic-bezier(.4,0,.2,1);
}
.progress-text { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }

.seq-hint { margin: 10px 0 12px; font-size: 12px; color: var(--ink-3); }
.seq-hint em { color: var(--ink-2); font-style: normal; }

.sequence {
  display: flex; flex-direction: column; gap: 1px;
  max-height: 52vh; overflow-y: auto; scroll-behavior: smooth;
  margin: 0 -6px; padding: 0 6px;
}
.seq-row {
  display: flex; align-items: center; gap: 11px;
  width: 100%; text-align: left; cursor: pointer;
  padding: 7px 9px; border-radius: 3px;
  background: transparent; border: 1px solid transparent;
  color: var(--ink-2); font-family: inherit;
  transition: background .15s, border-color .15s, opacity .25s;
}
.seq-row:hover { background: var(--panel-2); }
.seq-n {
  flex: none; width: 21px; height: 21px; display: grid; place-items: center;
  font-family: var(--mono); font-size: 10.5px;
  border: 1px solid var(--line); border-radius: 50%; color: var(--ink-3);
}
.seq-mid { display: flex; flex-direction: column; gap: 0; min-width: 0; flex: 1; }
.seq-name { font-size: 13px; color: var(--ink); }
.seq-meta { display: flex; align-items: center; gap: 6px; }
.seq-meta em { font-style: normal; font-size: 10.5px; color: var(--ink-3); letter-spacing: .04em; }
.mini-badge {
  font-size: 9px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--warn); border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent);
  border-radius: 2px; padding: 0 4px;
}
.seq-mark { flex: none; color: var(--good); font-size: 13px; width: 14px; text-align: right; }

.seq-row.done { opacity: .42; }
.seq-row.done .seq-name { text-decoration: line-through; text-decoration-color: var(--ink-3); }
.seq-row.next {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  opacity: 1;
}
.seq-row.next .seq-n { border-color: var(--accent); color: var(--accent); }

.seq-turn {
  display: flex; align-items: center; gap: 10px;
  margin: 9px 2px; padding: 8px 10px;
  border: 1px dashed color-mix(in srgb, var(--warn) 45%, transparent);
  border-radius: 3px;
  background: color-mix(in srgb, var(--warn) 7%, transparent);
}
.seq-turn-ico { font-size: 15px; color: var(--warn); line-height: 1; }
.seq-turn-tx { display: flex; flex-direction: column; }
.seq-turn-tx strong {
  font-size: 11px; font-weight: 500; letter-spacing: .1em;
  text-transform: uppercase; color: var(--warn);
}
.seq-turn-tx em { font-style: normal; font-size: 11.5px; color: var(--ink-3); }

/* --------------------------------------------------------------- tray */

.tray {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(78px, 1fr));
  gap: 8px; max-height: 30vh; overflow-y: auto;
}
.tray-card {
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  padding: 8px 5px 7px; cursor: pointer;
  background: var(--panel-2); border: 1px solid var(--line-soft);
  border-radius: 3px; font-family: inherit;
  transition: border-color .16s, transform .16s;
}
.tray-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.tray-card.on { border-color: var(--accent); }
.thumb { width: 100%; height: 46px; display: block; }
.thumb svg { width: 100%; height: 100%; display: block; }
.tray-cap { display: flex; align-items: center; gap: 4px; width: 100%; }
.tray-n {
  flex: none; font-family: var(--mono); font-size: 9px; color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  border-radius: 2px; padding: 0 3px;
}
.tray-name {
  font-size: 10px; color: var(--ink-3); line-height: 1.25;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* scrollbars */
.sequence::-webkit-scrollbar, .tray::-webkit-scrollbar { width: 7px; }
.sequence::-webkit-scrollbar-thumb, .tray::-webkit-scrollbar-thumb {
  background: #2a2f36; border-radius: 4px;
}

/* -------------------------------------------------------------- foot */

.foot {
  max-width: var(--page-max);
  margin: 20px auto 26px; padding: 16px var(--page-pad) 0;
  border-top: 1px solid var(--line-soft);
}
.foot p { margin: 0; font-size: 11.6px; color: var(--ink-3); max-width: 900px; }

/* ------------------------------------------------------- responsive */

@media (max-width: 1240px) {
  .layout { grid-template-columns: minmax(260px, 320px) 1fr; }
  .col-right { grid-column: 1 / -1; }
  .col-right { flex-direction: row; flex-wrap: wrap; }
  .col-right > .card { flex: 1 1 340px; }
  .sequence { max-height: 340px; }
}

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; padding: 14px; }
  .col-left { order: 2; }
  .col-stage { order: 1; }
  .col-right { order: 3; flex-direction: column; }
  .topbar { padding: 14px; }
  .strap { display: none; }
  .scene { height: 52vh; min-height: 320px; }
}

/* ------------------------------------------------- view-control labelling */

.ctl-label {
  font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-3); flex: none;
}
.ctl-note { margin: -2px 0 2px; font-size: 11.6px; color: var(--ink-3); }

/* ================================================================ v2 UI */

.topbar-right { display: flex; align-items: center; gap: 10px; }

.icon-btn {
  width: 30px; height: 30px; flex: none;
  display: grid; place-items: center;
  background: var(--panel); border: 1px solid var(--line); border-radius: 50%;
  color: var(--ink-2); font-family: var(--serif); font-size: 15px; cursor: pointer;
  transition: border-color .18s, color .18s;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ---- calibre picker ---------------------------------------------------- */

.cal-select { position: relative; }

.cal-btn {
  --accent: #c8a45c;
  display: flex; align-items: center; gap: 12px;
  padding: 8px 14px;
  background: var(--panel-2); border: 1px solid var(--line);
  border-radius: 3px; cursor: pointer; font-family: inherit;
  color: var(--ink); transition: border-color .18s;
}
.cal-btn:hover { border-color: var(--accent); }
.cal-btn[aria-expanded="true"] { border-color: var(--accent); }
.cal-btn-lead { display: flex; align-items: baseline; gap: 7px; }
.cal-btn-brand {
  font-size: 10px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3);
}
.cal-btn-id { font-family: var(--mono); font-size: 15px; color: var(--accent); letter-spacing: .04em; }
.cal-btn-tag {
  font-size: 11px; letter-spacing: .05em; text-transform: uppercase; color: var(--ink-3);
  border-left: 1px solid var(--line); padding-left: 12px;
}
.cal-caret { color: var(--ink-3); font-size: 11px; }

.cal-panel {
  position: absolute; top: calc(100% + 7px); right: 0; z-index: 60;
  width: min(420px, 92vw);
  background: #14171a; border: 1px solid var(--line);
  border-radius: 4px; box-shadow: 0 22px 50px rgba(0,0,0,.6);
  padding: 10px;
}
.cal-search-wrap { display: block; margin-bottom: 8px; position: relative; }
.cal-search-wrap input {
  width: 100%; padding: 8px 74px 8px 11px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 3px;
  color: var(--ink); font-family: inherit; font-size: 13px;
}
.cal-search-wrap input:focus { outline: none; border-color: var(--accent); }
.cal-count {
  position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-3);
  pointer-events: none;
}

.cal-list { max-height: 56vh; overflow-y: auto; display: flex; flex-direction: column; gap: 1px; }

.cal-group {
  display: flex; align-items: baseline; gap: 8px;
  padding: 10px 6px 5px;
  font-size: 10.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-3);
  border-bottom: 1px solid var(--line-soft); margin-bottom: 3px;
}
.cal-group-n { font-family: var(--mono); letter-spacing: 0; opacity: .65; }

.cal-row {
  --accent: #c8a45c;
  display: flex; align-items: center; gap: 12px; width: 100%;
  padding: 8px 9px; border-radius: 3px; cursor: pointer; text-align: left;
  background: transparent; border: 1px solid transparent;
  font-family: inherit; color: var(--ink-2);
  transition: background .15s, border-color .15s;
}
.cal-row:hover { background: var(--panel-2); }
/* keyboard cursor — moves with the arrow keys while focus stays in the search box */
.cal-row.active { background: var(--panel-2); box-shadow: inset 2px 0 0 var(--accent); }
.cal-row.on { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 9%, transparent); }
.cal-row-id {
  flex: none; width: 46px; font-family: var(--mono); font-size: 14px; color: var(--accent);
}
.cal-row-mid { flex: 1; display: flex; flex-direction: column; gap: 1px; min-width: 0; }
/* the formal designation, then what the movement actually is, then its numbers */
.cal-row-name { font-size: 13px; color: var(--ink); }
.cal-row-spec { font-size: 11px; color: var(--ink-2); }
.cal-row-sub { font-size: 10.5px; color: var(--ink-3); font-family: var(--mono); }
.cal-row-steps { flex: none; font-size: 10.5px; color: var(--ink-3); font-family: var(--mono); }

.cal-empty { margin: 10px 6px 4px; font-size: 12.5px; color: var(--ink-3); }

/* ---- welcome overlay --------------------------------------------------- */

/* an author `display` beats the UA rule for [hidden], so say it explicitly */
.overlay[hidden], .cal-panel[hidden] { display: none; }

.overlay {
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center;
  padding: 20px;
  background: rgba(6,7,9,.78);
  backdrop-filter: blur(3px);
}
.overlay-card {
  position: relative;
  width: min(560px, 100%); max-height: 90vh; overflow-y: auto;
  background: linear-gradient(180deg, #1a1d22, #131619);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 30px 32px 26px;
  box-shadow: 0 30px 80px rgba(0,0,0,.65);
}
.overlay-x {
  position: absolute; top: 12px; right: 14px;
  background: none; border: 0; cursor: pointer;
  color: var(--ink-3); font-size: 22px; line-height: 1; padding: 4px 8px;
}
.overlay-x:hover { color: var(--ink); }
.overlay-kicker {
  margin: 0; font-family: var(--serif); font-size: 13px;
  letter-spacing: .3em; text-transform: uppercase; color: var(--accent);
}
.overlay-card h2 { margin: 8px 0 0; font-family: var(--serif); font-size: 27px; }
.overlay-lead { margin: 12px 0 0; font-size: 13.8px; color: var(--ink-2); }

.how { list-style: none; margin: 20px 0 0; padding: 0; display: flex; flex-direction: column; gap: 13px; }
.how li { display: flex; gap: 13px; font-size: 13.4px; color: var(--ink-2); line-height: 1.5; }
.how strong { color: var(--ink); font-weight: 500; }
.how-n {
  flex: none; width: 23px; height: 23px; display: grid; place-items: center;
  border: 1px solid var(--accent); border-radius: 50%;
  color: var(--accent); font-family: var(--mono); font-size: 11px;
}

.overlay-actions {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; flex-wrap: wrap;
  margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line-soft);
}

/* ---- tidied controls --------------------------------------------------- */

.primary-row { align-items: stretch; }
.btn.big { padding: 11px 26px; font-size: 14px; font-weight: 500; }

.more { border-top: 1px solid var(--line-soft); padding-top: 8px; }
.more > summary {
  cursor: pointer; list-style: none;
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-3); padding: 3px 0;
}
.more > summary::-webkit-details-marker { display: none; }
.more > summary::before { content: '+ '; font-family: var(--mono); }
.more[open] > summary::before { content: '\2212 '; }
.more > summary:hover { color: var(--ink-2); }
.more-body { display: flex; flex-direction: column; gap: 10px; padding-top: 10px; }

@media (max-width: 860px) {
  .topbar-right { width: 100%; }
  .cal-select { flex: 1; }
  .cal-btn { width: 100%; }
  .cal-panel { left: 0; right: auto; width: 100%; }
  .overlay-card { padding: 24px 20px 20px; }
}

/* ------------------------------------------------- reference photography */

.ref-card { padding: 0; }
.ref-card > details > summary {
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px;
  padding: 16px 18px; cursor: pointer; list-style: none;
  font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2);
}
.ref-card > details > summary::-webkit-details-marker { display: none; }
.ref-card > details[open] > summary { border-bottom: 1px solid var(--line-soft); }
.ref-count {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0;
  text-transform: none; color: var(--ink-3);
}
.ref-body { padding: 14px 18px 18px; }

.ref-empty p { margin: 0 0 8px; font-size: 12.6px; color: var(--ink-3); }
.ref-how code {
  font-family: var(--mono); font-size: 11px;
  background: var(--panel-2); border: 1px solid var(--line);
  border-radius: 2px; padding: 1px 4px; color: var(--ink-2);
}

.ref-sub {
  margin: 16px 0 8px; font-size: 10.5px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink-3);
}
.ref-links { margin: 0; padding: 0; list-style: none; }
.ref-links li { padding: 4px 0 4px 14px; position: relative; }
.ref-links li::before {
  content: ''; position: absolute; left: 0; top: 12px;
  width: 5px; height: 1px; background: var(--accent);
}
.ref-links a { color: var(--ink-2); font-size: 12.4px; text-decoration: none; }
.ref-links a:hover { color: var(--accent); text-decoration: underline; }
.ref-warn { margin: 12px 0 0; font-size: 11.4px; color: var(--ink-3); font-style: italic; }

/* ---- thumbnail strip --------------------------------------------------- */

.ph-strip {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 9px; margin: 0;
}
.ph-tile {
  margin: 0; cursor: pointer;
  background: var(--panel-2); border: 1px solid var(--line-soft);
  border-radius: 3px; overflow: hidden;
  transition: border-color .16s, transform .16s;
}
.ph-tile:hover { border-color: var(--accent); transform: translateY(-2px); }
.ph-tile img { display: block; width: 100%; height: 74px; object-fit: cover; background: #0e1013; }
.ph-cap { display: flex; flex-direction: column; padding: 5px 7px 6px; gap: 1px; }
.ph-cap-t {
  font-size: 10.5px; color: var(--ink-2); line-height: 1.3;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ph-cap-c {
  font-size: 9px; color: var(--ink-3);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ph-cap-c.uncredited { color: var(--warn); }

.tag.photo { color: var(--good); border-color: color-mix(in srgb, var(--good) 45%, transparent); }

/* ---- lightbox ---------------------------------------------------------- */

.lightbox { background: rgba(4,5,7,.92); }
.lb-figure {
  margin: 0; max-width: min(1100px, 94vw); max-height: 90vh;
  display: flex; flex-direction: column; gap: 12px; align-items: center;
}
.lb-figure img {
  max-width: 100%; max-height: 76vh; object-fit: contain;
  border: 1px solid var(--line); border-radius: 3px; background: #0b0d10;
}
.lb-caption { margin: 0; font-size: 14px; color: var(--ink); text-align: center; }
.lb-credit { margin: 0; font-size: 11.5px; color: var(--ink-3); text-align: center; }
.lb-credit a { color: var(--accent); }
.lb-count {
  margin: 0; font-family: var(--mono); font-size: 10.5px; color: var(--ink-3);
  text-align: center; letter-spacing: .08em;
}

.lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 46px; height: 76px; display: grid; place-items: center;
  font-size: 30px; line-height: 1; color: var(--ink-2);
  background: rgba(20,23,26,.72); border: 1px solid var(--line);
  border-radius: 3px; cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}
.lb-nav:hover { color: var(--ink); border-color: var(--accent); background: rgba(20,23,26,.94); }
.lb-nav.prev { left: max(14px, calc(50vw - 620px)); }
.lb-nav.next { right: max(14px, calc(50vw - 620px)); }
.lb-nav[hidden] { display: none; }

@media (max-width: 720px) {
  .lb-nav { width: 38px; height: 60px; font-size: 24px; }
  .lb-nav.prev { left: 8px; }
  .lb-nav.next { right: 8px; }
}

/* Touch: the view presets, the zoom pair and the option checkboxes are all
   comfortably clickable with a mouse but were around 20 px tall, which is
   below what a fingertip can reliably hit. */
@media (pointer: coarse) {
  .view-btn { min-height: 34px; min-width: 40px; padding: 6px 13px; }
  #btn-zoom-in, #btn-zoom-out { min-width: 40px; font-size: 15px; }
  .opts .chk { min-height: 34px; }
  .opts .chk input { width: 17px; height: 17px; }
  .ref-links a, .ref-warn a { display: inline-block; padding: 5px 0; }
  .seq-row { padding-top: 9px; padding-bottom: 9px; }
}