/* Canvas (HUD) layouts. All colour, shape and type comes from the theme variables. */

body.canvas-mode > header, body.canvas-mode > nav, body.canvas-mode > main { display: none; }
body.canvas-mode { overflow: hidden; }

#stage {
  position: fixed; overflow: hidden;
  /* Keep the HUD clear of notches, the Dynamic Island and the home indicator. */
  inset: var(--safe-top, env(safe-area-inset-top)) var(--safe-right, env(safe-area-inset-right)) var(--safe-bottom, env(safe-area-inset-bottom)) var(--safe-left, env(safe-area-inset-left));
}
#canvas {
  --hud-line: color-mix(in srgb, var(--accent) 38%, var(--line));
  --hud-face: color-mix(in srgb, var(--panel) 82%, transparent);
  --hud-face-hi: color-mix(in srgb, var(--panel-hi) 90%, transparent);
  position: absolute; left: 50%; top: 50%; transform-origin: 50% 50%;
  font-family: var(--font-body); color: var(--text);
  background:
    linear-gradient(color-mix(in srgb, var(--accent) 7%, transparent) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 7%, transparent) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--bg-art), var(--bg);
  box-shadow: 0 0 0 1px var(--line), 0 30px 80px rgba(0,0,0,.5);
  overflow: hidden;
}
#canvas > *, .hud-region > *, .hud-panel > * { position: absolute; }

/* ---------- buttons ---------- */
.hud-btn {
  --c: var(--accent);
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 0 10px; margin: 0;
  background: linear-gradient(180deg, var(--hud-face-hi), var(--hud-face));
  border: 1px solid var(--hud-line);
  border-radius: min(var(--key-radius), 6px);
  color: var(--text);
  font: var(--label-weight) 15px/1.1 var(--font-body);
  text-transform: var(--label-case); letter-spacing: var(--label-track);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05), var(--key-shadow, 0 0 0 transparent);
  touch-action: none; cursor: pointer; user-select: none;
  transition: transform .06s ease, background .06s ease, box-shadow .06s ease, border-color .06s ease;
}
.hud-btn[data-color="green"] { --c: var(--green); }
.hud-btn[data-color="amber"] { --c: var(--amber); }
.hud-btn[data-color="red"] { --c: var(--red); }
.hud-btn[data-color="blue"] { --c: var(--blue); }
.hud-ico { display: inline-flex; color: var(--c); filter: var(--icon-glow); }
.hud-ico svg { width: 26px; height: 26px; stroke-width: var(--icon-stroke); }
.hud-btn.pressed {
  transform: scale(.97);
  border-color: var(--c);
  background: radial-gradient(circle at 50% 40%, color-mix(in srgb, var(--c) 42%, transparent), transparent 75%),
    color-mix(in srgb, var(--c) 20%, var(--panel));
  box-shadow: inset 0 0 0 1px var(--c), inset 0 0 26px color-mix(in srgb, var(--c) 45%, transparent), 0 0 18px color-mix(in srgb, var(--c) 35%, transparent);
}

.s-top { padding: 0; font-size: 14px; }
.s-top .hud-ico { color: var(--text); }
.s-top .hud-ico svg { width: 24px; height: 24px; }
.s-top .hud-emblem { color: var(--accent); filter: var(--icon-glow); }
.s-top .hud-emblem svg { width: 36px; height: 36px; stroke-width: 2.5; }

.s-tile { flex-direction: column; gap: 6px; clip-path: var(--key-clip); }
.s-tile .hud-ico svg { width: 24px; height: 24px; }

.s-chev { padding: 0; border-color: color-mix(in srgb, var(--c) 30%, var(--line)); }
.s-chev .hud-ico { color: var(--text); filter: none; }
.s-chev.pressed .hud-ico { color: var(--c); }
.s-chev .hud-ico svg { width: 30px; height: 30px; }

.s-wide { gap: 12px; font-size: 16px; }
.s-wide .hud-ico svg { width: 20px; height: 20px; }

.s-switch {
  font-size: 12px; padding: 0 6px; white-space: nowrap; letter-spacing: .04em;
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-color: var(--line-hi);
}

.s-dial { justify-content: center; position: absolute; border-left: 2px solid var(--c); }
.s-dial .dial {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  width: 38px; height: 38px; border-radius: 50%;
  background: color-mix(in srgb, var(--bg) 70%, transparent); border: 1px solid var(--line-hi);
}
.s-dial .dial svg { width: 100%; height: 100%; fill: none; stroke: var(--c); stroke-width: 2.5; }
.s-dial .dial circle { stroke: var(--line-hi); }
.s-dial.pressed .dial svg { animation: hud-spin 1.5s linear; }
@keyframes hud-spin { to { transform: rotate(360deg); } }

/* Big framed buttons: Flight Ready and Engage Quantum. */
.s-hero, .s-quantum {
  font-family: var(--font-display); font-size: 19px; font-weight: 400;
  background: linear-gradient(180deg, var(--hud-face-hi), color-mix(in srgb, var(--bg) 70%, transparent));
  clip-path: polygon(22px 0, calc(100% - 22px) 0, 100% 22px, 100% calc(100% - 22px), calc(100% - 22px) 100%, 22px 100%, 0 calc(100% - 22px), 0 22px);
  border: 1px solid color-mix(in srgb, var(--c) 55%, var(--line));
}
.s-hero::before, .s-quantum::before {
  content: ""; position: absolute; inset: 5px; pointer-events: none;
  clip-path: inherit; border: 1px solid color-mix(in srgb, var(--c) 30%, transparent);
}
.s-quantum { font-size: 22px; letter-spacing: calc(var(--label-track) + .04em); }
.s-quantum::after {
  content: ""; position: absolute; left: 50%; bottom: 9px; width: 46px; height: 6px; transform: translateX(-50%);
  background: repeating-linear-gradient(90deg, var(--c) 0 6px, transparent 6px 10px); opacity: .8;
}
.s-hero, .s-quantum { position: absolute; }
/* The status line ("HOLD TO ENGAGE") sits above the charge dots, not on top of them. */
.s-quantum .fx-state { bottom: 19px; }
/* Buttons with a status line under the label ("RETRACTED") centre label and status
   together, so they don't crowd each other. */
.s-std:has(> .fx-state) { padding-bottom: 10px; }

.s-danger {
  font-size: 16px; color: #fff;
  background: linear-gradient(180deg, color-mix(in srgb, var(--red) 55%, var(--panel)), color-mix(in srgb, var(--red) 30%, var(--panel)));
  border-color: var(--red);
  box-shadow: 0 0 18px color-mix(in srgb, var(--red) 35%, transparent);
}

.s-menu { justify-content: space-between; padding: 0 16px; }
.s-menu .caret { color: var(--accent); }

.s-cell {
  flex-direction: column; align-items: flex-start; justify-content: space-between;
  padding: 12px 12px 10px; font-size: 14px; text-align: left;
  border-left: max(var(--key-edge), 2px) solid var(--c);
  clip-path: var(--key-clip);
}
.s-cell .hud-ico svg { width: 30px; height: 30px; }

.s-pg { position: absolute; top: 0; width: calc(var(--pager-h, 44px) * 1.45); height: var(--pager-h, 44px); padding: 0; }
.s-pg svg { width: 22px; height: 22px; stroke: var(--text); stroke-width: 2.5; fill: none; }

/* ---------- chrome & decoration ---------- */
.hud-status { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--dim); letter-spacing: .08em; text-transform: uppercase; }
.hud-status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); box-shadow: 0 0 8px var(--red); }
.hud-status .dot.on { background: var(--green); box-shadow: 0 0 8px var(--green); }

.hud-rule { height: 6px; border-top: 2px solid color-mix(in srgb, var(--text) 75%, transparent); }
.hud-rule i { position: absolute; top: -6px; width: 2px; height: 10px; background: var(--red); }
.hud-rule i:first-child { left: 0; }
.hud-rule i:last-child { right: 0; }

.hud-divider { width: 1px; background: linear-gradient(180deg, transparent, var(--line-hi) 8%, var(--line-hi) 92%, transparent); }

.hud-header {
  font: 600 11px/1.25 var(--font-body); letter-spacing: .1em; text-transform: uppercase; color: var(--text);
  white-space: nowrap;
}
.hud-header b { color: var(--accent); margin-right: 2px; }
.hud-header em { font-style: normal; color: var(--green); }
.hud-header .b { color: var(--dim); opacity: .7; }

.hud-vlabel {
  width: 40px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); background: color-mix(in srgb, var(--panel) 50%, transparent);
}
.hud-vlabel span {
  transform: rotate(-90deg); font: 600 10px/1 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--dim);
}

.hud-caption { --c: var(--accent); display: flex; flex-direction: column; align-items: center; gap: 4px; }
.hud-caption[data-color="green"] { --c: var(--green); }
.hud-caption[data-color="red"] { --c: var(--red); }
.hud-caption[data-color="blue"] { --c: var(--blue); }
.hud-caption .hud-ico svg { width: 26px; height: 26px; }
.hud-caption .t { font: 600 10px/1 var(--font-body); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); }

.hud-bracket svg { width: 100%; height: 100%; display: block; fill: none; stroke: var(--line-hi); stroke-width: 1.5; stroke-dasharray: 3 4; }
.hud-bracket .f { fill: var(--accent); stroke: none; }

.hud-danger {
  border: 1px solid color-mix(in srgb, var(--red) 40%, transparent);
  background:
    repeating-linear-gradient(-45deg, color-mix(in srgb, var(--red) 9%, transparent) 0 8px, transparent 8px 16px),
    color-mix(in srgb, var(--red) 10%, transparent);
  border-radius: min(var(--key-radius), 6px);
}

/* ---------- eject slider ---------- */
.hud-slider { --fill: 0%; }
.hud-slider .track {
  position: absolute; inset: 0;
  border: 1px solid var(--line-hi); border-radius: 4px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--red) 45%, transparent) var(--fill), transparent var(--fill)),
    radial-gradient(circle, color-mix(in srgb, var(--red) 55%, transparent) 1px, transparent 1.6px) 0 50% / 9px 9px,
    color-mix(in srgb, var(--bg) 70%, transparent);
  display: flex; align-items: center; justify-content: center;
}
.hud-slider .txt {
  font: 700 10px/1 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--red);
  padding: 4px 8px; border: 1px solid var(--red); background: color-mix(in srgb, var(--bg) 85%, transparent);
}
.hud-slider .knob {
  position: absolute; left: 4px; top: -6px; bottom: -6px; width: 18px;
  background: var(--accent); border-radius: 3px;
  box-shadow: 0 0 14px var(--accent); touch-action: none; cursor: grab;
}
.hud-slider.fired .track { background: color-mix(in srgb, var(--red) 70%, transparent); }

/* ---------- regions, panels, pager ---------- */
.hud-panel { left: 0; top: 0; right: 0; }
/* Paging: the new panel slides in from the side you paged towards, with a short flicker. */
.hud-panel.enter-next { animation: panel-in-next .22s ease-out; }
.hud-panel.enter-prev { animation: panel-in-prev .22s ease-out; }
@keyframes panel-in-next {
  0% { opacity: 0; transform: translateX(18px); }
  35% { opacity: .7; } 50% { opacity: .35; }
  100% { opacity: 1; transform: none; }
}
@keyframes panel-in-prev {
  0% { opacity: 0; transform: translateX(-18px); }
  35% { opacity: .7; } 50% { opacity: .35; }
  100% { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) { .hud-panel.enter-next, .hud-panel.enter-prev { animation: none; } }
.hud-pager { left: 0; right: 0; bottom: 0; height: var(--pager-h, 44px); }
.hud-pager .prev { left: 0; }
.hud-pager .next { right: 0; }
.hud-pager .title {
  position: absolute; left: calc(var(--pager-h, 44px) * 1.45 + 8px); right: calc(var(--pager-h, 44px) * 1.45 + 8px); top: 0; bottom: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  background: color-mix(in srgb, var(--panel) 55%, transparent); border: 1px solid var(--line);
  border-radius: min(var(--key-radius), 6px);
}
.hud-pager .title span { font: 400 17px/1 var(--font-display); letter-spacing: .14em; text-transform: uppercase; }
.hud-pager .dots { display: flex; gap: 5px; }
.hud-pager .dots i { width: 14px; height: 3px; background: var(--line-hi); }
.hud-pager .dots i.on { background: var(--accent); box-shadow: 0 0 6px var(--accent); }

.hud-grid { display: grid; align-content: start; }
.hud-grid > .hud-btn { position: relative; }
/* In button grids the label sits at the bottom left (tablet) or on one row (phone), so the
   status line ("OFF", "LOCKED") goes in the free top-right corner instead of under it. */
.hud-grid .fx-state { left: auto; right: 10px; top: 9px; bottom: auto; text-align: right; }
.hud-grid .s-std:has(> .fx-state) { padding-bottom: 0; }
.compact .hud-grid .fx-state, .hud-grid.compact .fx-state { right: 7px; top: 5px; }
.hud-grid.compact .hud-btn { font-size: 12px; }

/* ---------- operator mode menu ---------- */
.hud-menu {
  position: absolute; inset: 0; z-index: 5;
  background: rgba(0, 0, 0, .55); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
}
.hud-menu .sheet {
  position: relative; width: 560px; padding: 18px;
  background: color-mix(in srgb, var(--panel) 95%, transparent); border: 1px solid var(--line-hi);
  border-radius: min(var(--key-radius), 10px);
  box-shadow: 0 20px 60px rgba(0,0,0,.6), 0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent);
}
.hud-menu .hud-header { position: static; margin-bottom: 14px; font-size: 13px; }
.hud-menu .opts { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 92px; gap: 12px; }
.hud-menu .opts .hud-btn { position: relative; }

/* ---------- phone-sized canvases ---------- */
.compact .hud-pager .title { gap: 3px; }
.compact .hud-pager .title span { font-size: 14px; }
.compact .hud-pager .dots i { width: 10px; height: 2px; }
.compact .s-pg svg { width: 18px; height: 18px; }
.compact .hud-menu .sheet { width: 560px; padding: 12px 14px; }
.compact .hud-menu .hud-header { margin-bottom: 8px; }
.compact .hud-menu .opts { grid-template-columns: repeat(4, 1fr); grid-auto-rows: 66px; gap: 8px; }
.compact .hud-menu .opts .hud-btn { padding: 8px 10px; font-size: 13px; }
.compact .hud-grid .hud-btn { font-size: 12px; padding: 0 8px; gap: 6px; justify-content: flex-start; }
.compact .hud-grid .hud-ico svg { width: 20px; height: 20px; }

/* Wide (phone) layouts need landscape; show a hint in portrait. */
.hud-rotate { display: none; }
@media (orientation: portrait) {
  .landscape-only #canvas { visibility: hidden; }
  .landscape-only .hud-rotate {
    position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px;
    color: var(--text); font: 600 15px/1.3 var(--font-body); letter-spacing: .12em; text-transform: uppercase; text-align: center;
  }
  .landscape-only .hud-rotate svg { width: 56px; height: 56px; color: var(--accent); stroke-width: 2; animation: hud-tilt 2.4s ease-in-out infinite; }
}
@keyframes hud-tilt { 0%, 30% { transform: rotate(0); } 60%, 100% { transform: rotate(90deg); } }
/* Phone tiles and the quantum button are too short for a status line plus decoration. */
.compact .s-tile .fx-state { display: none; }
.compact .s-quantum::after { display: none; }
.compact .s-hero .fx-state, .compact .s-quantum .fx-state { bottom: 3px; }
.compact .hud-caption { gap: 2px; }
.compact .hud-caption .hud-ico svg { width: 20px; height: 20px; }