/* ═══ THE LAB — shell for the playable UI recreations ════════════════════
   Every skin below lives inside .lab-stage and owns its own visual language.
   The shell is neutral so the skins can be loud.
   ═══════════════════════════════════════════════════════════════════════ */

#lab { overflow: hidden; }

.lab-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.6rem;
  align-items: end;
  margin-bottom: 2rem;
}
@media (min-width: 980px) { .lab-head { grid-template-columns: minmax(0, 1fr) auto; } }

/* ── Project tabs ──────────────────────────────────────── */
.lab-tabs {
  display: flex;
  gap: .45rem;
  overflow-x: auto;
  padding-bottom: .55rem;
  scrollbar-width: none;
  margin-bottom: 1.15rem;
}
.lab-tabs::-webkit-scrollbar { display: none; }

.lab-tab {
  --accent: var(--signal);
  position: relative;
  flex: none;
  display: flex;
  flex-direction: column;
  gap: .18rem;
  padding: .7rem 1.05rem;
  border-radius: var(--r-md);
  border: 1px solid var(--hairline);
  background: var(--surface);
  text-align: left;
  transition: border-color var(--t-base) var(--e-out),
              background var(--t-base) var(--e-out),
              transform var(--t-fast) var(--e-snap);
}
.lab-tab b {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: .84rem;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--bone-faint);
  transition: color var(--t-base);
  white-space: nowrap;
}
.lab-tab span {
  font-family: var(--ff-mono);
  font-size: .6rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--bone-ghost);
  white-space: nowrap;
}
.lab-tab:hover { background: var(--surface-2); transform: translateY(-2px); }
.lab-tab:hover b { color: var(--bone-dim); }
.lab-tab:active { transform: scale(.96); }

.lab-tab.is-active {
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  background: color-mix(in srgb, var(--accent) 9%, transparent);
}
.lab-tab.is-active b { color: var(--accent); }
.lab-tab.is-active span { color: color-mix(in srgb, var(--accent) 62%, var(--bone-ghost)); }
.lab-tab.is-active::after {
  content: '';
  position: absolute;
  left: 50%; bottom: -.55rem;
  width: 5px; height: 5px;
  margin-left: -2.5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

/* ── Device frame ──────────────────────────────────────── */
.lab-device {
  position: relative;
  border-radius: var(--r-xl);
  border: 1px solid var(--hairline-2);
  background: var(--ink-900);
  box-shadow: var(--sh-lg);
  overflow: hidden;
}

.lab-bar {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--hairline);
  background: var(--ink-900);
  position: relative;
  z-index: 3;
  flex-wrap: wrap;
}
.lab-bar .term-dots { flex: none; }
.lab-bar-title {
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: .1em;
  color: var(--bone-faint);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.lab-bar-title b { color: var(--bone); font-weight: 600; }
.lab-bar-title em { font-style: normal; color: var(--bone-ghost); }
.lab-bar-tools { margin-left: auto; display: flex; align-items: center; gap: .45rem; }

.lab-hint {
  font-family: var(--ff-mono);
  font-size: .64rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--bone-ghost);
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}
.lab-hint kbd {
  font-family: var(--ff-mono);
  font-size: .58rem;
  padding: .16rem .38rem;
  border-radius: 4px;
  border: 1px solid var(--hairline-2);
  background: var(--surface-2);
  color: var(--bone-dim);
}

/* ── Stage ─────────────────────────────────────────────── */
.lab-stage {
  position: relative;
  min-height: clamp(320px, 40vh, 480px);
  display: block;
  isolation: isolate;
}
.lab-stage > .skin { display: none; }
.lab-stage > .skin.is-live {
  display: flex;
  overflow: hidden;
  animation: skinIn 340ms var(--e-out);
}
@keyframes skinIn { from { opacity: 0; transform: scale(.985); } }

/* Shared: every skin fills the stage */
.skin {
  position: relative;
  display: flex;
  flex-direction: column;
  container-type: inline-size;
}

/* ── Caption strip under the device ────────────────────── */
.lab-caption {
  display: grid;
  gap: 1.2rem;
  margin-top: 1.4rem;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 860px) { .lab-caption { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); align-items: start; } }

.lab-note {
  font-size: var(--fs-sm);
  color: var(--bone-faint);
  line-height: 1.62;
  text-wrap: pretty;
  max-width: 68ch;
}
.lab-note b { color: var(--bone-dim); font-weight: 600; }
.lab-note code {
  font-family: var(--ff-mono);
  font-size: .86em;
  color: var(--wire);
}

.lab-meta { display: flex; flex-wrap: wrap; gap: .4rem; justify-content: flex-start; }
@media (min-width: 860px) { .lab-meta { justify-content: flex-end; } }

/* ── Generic controls used by several skins ────────────── */
.lab-reset {
  font-family: var(--ff-mono);
  font-size: .62rem;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--bone-ghost);
  padding: .3rem .6rem;
  border: 1px solid var(--hairline);
  border-radius: var(--r-xs);
  transition: color var(--t-fast), border-color var(--t-fast);
}
.lab-reset:hover { color: var(--pulse); border-color: color-mix(in srgb, var(--pulse) 45%, transparent); }

/* Toast (shared across skins) */
.lab-toast {
  position: absolute;
  left: 50%;
  bottom: 1.1rem;
  transform: translate(-50%, 140%);
  z-index: 40;
  padding: .6rem 1.05rem;
  border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--void) 90%, transparent);
  border: 1px solid var(--hairline-2);
  backdrop-filter: blur(12px);
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: .09em;
  color: var(--bone);
  pointer-events: none;
  transition: transform 420ms var(--e-spring), opacity 300ms;
  opacity: 0;
  white-space: nowrap;
  max-width: 90%;
  overflow: hidden;
  text-overflow: ellipsis;
}
.lab-toast.is-up { transform: translate(-50%, 0); opacity: 1; }

/* Confetti / particle host */
.fx-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 30;
  overflow: hidden;
}
.fx-bit {
  position: absolute;
  width: 8px; height: 8px;
  will-change: transform, opacity;
}

/* ── Touch: keyboard affordances are noise ─────────────── */
@media (hover: none), (pointer: coarse) {
  .co-keys,
  .hk-tip kbd,
  .lab-hint kbd { display: none; }
  .lab-bar { padding: .6rem .75rem; }
}

/* ═══ BOARDS GRID ══════════════════════════════════════════════════════ */

.board-grid {
  display: grid;
  gap: clamp(.8rem, 1.6vw, 1.3rem);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 680px)  { .board-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1080px) { .board-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 1080px) { .board--lead { grid-column: span 2; grid-row: span 2; } }

.board {
  --accent: var(--signal);
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--r-lg);
  border: 1px solid var(--hairline);
  background: var(--ink-900);
  overflow: hidden;
  text-align: left;
  isolation: isolate;
  transform-style: preserve-3d;
  transition: border-color var(--t-base), box-shadow var(--t-base);
}
.board:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  box-shadow: 0 22px 60px rgba(0,0,0,.6), 0 0 0 1px color-mix(in srgb, var(--accent) 22%, transparent);
}
.board::before {
  content: '';
  position: absolute;
  inset: -1px;
  z-index: 0;
  border-radius: inherit;
  opacity: 0;
  pointer-events: none;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%),
              color-mix(in srgb, var(--accent) 18%, transparent), transparent 65%);
  transition: opacity var(--t-base);
}
.board:hover::before { opacity: 1; }

.board-shot {
  display: block;
  aspect-ratio: 1920 / 1200;
  overflow: hidden;
  background: var(--ink-800);
}
.board-shot img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  filter: saturate(.9) brightness(.94);
  transition: transform var(--t-lazy) var(--e-out), filter var(--t-lazy) var(--e-out);
}
.board:hover .board-shot img { transform: scale(1.06); filter: none; }

.board-meta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: .2rem;
  padding: .9rem 1rem 1rem;
}
.board-meta b {
  font-family: var(--ff-display);
  font-weight: 900;
  font-size: clamp(1rem, 1.6vw, 1.35rem);
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--bone);
  line-height: 1.05;
}
.board--lead .board-meta b { font-size: clamp(1.3rem, 2.4vw, 2rem); }
.board-meta em {
  font-style: normal;
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
}

.board-open {
  position: absolute;
  top: .7rem; right: .7rem;
  z-index: 2;
  padding: .28rem .65rem;
  border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--void) 76%, transparent);
  border: 1px solid var(--hairline-2);
  backdrop-filter: blur(8px);
  font-family: var(--ff-mono);
  font-size: .55rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--bone-dim);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity var(--t-base), transform var(--t-base) var(--e-out);
}
.board:hover .board-open { opacity: 1; transform: none; }

/* ═══ REAL-SCREEN PANEL ════════════════════════════════════════════════ */

.skin-real {
  background:
    radial-gradient(ellipse 70% 50% at 50% -10%,
      color-mix(in srgb, var(--accent) 10%, transparent), transparent 62%),
    var(--ink-900);
  padding: 0;
  gap: 0;
}