/* ============================================================
   Card studio (fabric.js)
   ============================================================ */
.view.studio { padding: 0; min-height: 0; }
.studio { position: fixed; inset: 0; z-index: 20; display: grid;
  grid-template-columns: 88px auto minmax(0, 1fr); grid-template-rows: 64px minmax(0, 1fr);
  grid-template-areas: 'bar bar bar' 'rail drawer stage'; }

/* header */
.studio__bar { grid-area: bar; min-width: 0; display: flex; align-items: center; gap: 10px; padding: 0 16px;
  background: color-mix(in oklab, var(--bg-0) 70%, transparent); backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); z-index: 3; }
.studio__bar .icon-btn { width: 40px; height: 40px; font-size: 18px; }
.studio__bar .icon-btn:disabled { opacity: .3; pointer-events: none; }
.studio__name { width: min(260px, 26vw); height: 40px; border-radius: 12px; border: 1px solid transparent; background: transparent; padding: 0 12px; font-size: 17px; font-weight: 600; outline: none; transition: background .2s, border-color .2s; }
.studio__name:hover, .studio__name:focus { background: var(--glass); border-color: var(--line); }
.studio__sizes { display: flex; padding: 4px; gap: 2px; border-radius: 14px; background: var(--glass); border: 1px solid var(--line); }
.studio__sizes button { height: 30px; padding: 0 10px; border-radius: 10px; font-size: 13px; font-weight: 600; color: var(--ink-2); transition: background .25s, color .25s; }
.studio__sizes button.is-on { background: #fff; color: var(--bg-0); }
.studio__spacer { flex: 1; }

/* tool rail */
.studio__rail { grid-area: rail; display: flex; flex-direction: column; gap: 4px; padding: 10px 8px; overflow-y: auto; scrollbar-width: none;
  background: color-mix(in oklab, var(--bg-0) 55%, transparent); border-right: 1px solid var(--line); z-index: 2; }
.tool { position: relative; display: grid; justify-items: center; gap: 2px; padding: 9px 2px; border-radius: 16px; color: var(--ink-2); transition: background .25s, color .25s; }
.tool span { font-size: 24px; line-height: 1; transition: transform .45s var(--ease-spring); }
.tool small { font-size: 11px; font-weight: 500; }
.tool:hover { background: var(--glass); color: #fff; }
.tool:hover span { transform: scale(1.18) rotate(-8deg); }
.tool.is-on { background: linear-gradient(135deg, var(--accent), var(--pink)); color: #fff; box-shadow: 0 8px 20px color-mix(in oklab, var(--pink) 40%, transparent); }
.tool span.is-spin { animation: dice .8s var(--ease-spring); }
@keyframes dice { 50% { transform: rotate(200deg) scale(1.4); } 100% { transform: rotate(360deg); } }

/* drawer */
.studio__drawer { grid-area: drawer; width: 0; overflow: hidden; transition: width .5s var(--ease-out);
  background: color-mix(in oklab, var(--bg-1) 60%, transparent); backdrop-filter: blur(16px); border-right: 1px solid var(--line); z-index: 2; }
.studio.has-drawer .studio__drawer { width: 320px; }
.drawer { width: 320px; height: 100%; overflow-y: auto; padding: 18px 16px 40px; scrollbar-width: thin; }
.drawer h3 { margin: 18px 0 10px; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--soft); font-weight: 600; }
.drawer h3:first-child { margin-top: 0; }
.drawer.is-in > *, .drawer.is-in .grid > * , .drawer.is-in .presets > * { animation: drawerIn .55s var(--ease-spring) both; animation-delay: calc(min(var(--i, 0), 24) * 14ms); }
@keyframes drawerIn { from { opacity: 0; transform: translateY(14px) scale(.9); } }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.grid--wide { grid-template-columns: 1fr 1fr; }
.grid--emoji { grid-template-columns: repeat(6, 1fr); gap: 2px; }
.grid--swatch { grid-template-columns: repeat(6, 1fr); }
.grid--pattern { grid-template-columns: repeat(4, 1fr); }
.item { aspect-ratio: 1; border-radius: 14px; display: grid; place-items: center; padding: 6px; background: var(--glass); border: 1px solid transparent;
  transition: transform .35s var(--ease-spring), background .2s, border-color .2s; cursor: grab; }
.item:hover { transform: scale(1.12) rotate(-4deg); background: var(--glass-2); border-color: var(--line); }
.item:active { transform: scale(.9); }
.item img { width: 100%; height: 100%; object-fit: contain; pointer-events: none; filter: drop-shadow(0 4px 6px rgb(0 0 0 / .25)); }
.grid--wide .item { aspect-ratio: 4 / 1; background: rgb(0 0 0 / .25); }
.grid--wide .item:nth-child(even) { background: rgb(255 255 255 / .55); }
.item--emoji { font-size: 26px; padding: 0; background: transparent; }
.grid:not(.grid--emoji) .item--emoji { font-size: 34px; background: var(--glass); }
.item.is-on { border-color: #fff; background: var(--glass-2); }
.swatch-lg { position: relative; aspect-ratio: 1; border-radius: 12px; background-size: 60px; border: 2px solid rgb(255 255 255 / .15); transition: transform .35s var(--ease-spring), border-color .2s; display: grid; place-items: center; font-size: 16px; overflow: hidden; }
.swatch-lg:hover { transform: scale(1.14) rotate(4deg); border-color: #fff; z-index: 1; }
.swatch-lg.is-on { border-color: #fff; box-shadow: 0 0 0 3px var(--pink); }
.swatch-lg--pick { cursor: pointer; background: conic-gradient(red, #ff0, lime, cyan, blue, #f0f, red); }
.swatch-lg--pick input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.swatch-lg--none { background: var(--glass); color: var(--ink-2); }
.add-row { display: block; width: 100%; text-align: left; padding: 14px 18px; border-radius: 18px; background: var(--glass); border: 1px solid var(--line); margin-bottom: 8px; font-size: 16px; transition: transform .35s var(--ease-spring), background .2s; }
.add-row:hover { transform: translateX(6px); background: var(--glass-2); }
.add-row--title { font-size: 26px; font-weight: 700; }
.add-row--sign { font-family: 'SCRIPTIN', cursive; font-size: 26px; }
.presets { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 14px; }
.preset { height: 74px; border-radius: 18px; background: rgb(0 0 0 / .28); font-size: 24px; transition: transform .4s var(--ease-spring); overflow: hidden; }
.preset:hover { transform: scale(1.06) rotate(-2deg); }
.tabs { display: flex; gap: 4px; margin-bottom: 12px; flex-wrap: wrap; }
.tab { width: 38px; height: 38px; border-radius: 12px; font-size: 20px; transition: background .2s, transform .3s var(--ease-spring); }
.tab:hover { transform: scale(1.12); }
.tab.is-on { background: var(--glass-2); }
.dropzone { width: 100%; display: grid; justify-items: center; gap: 6px; padding: 30px 16px; border-radius: 22px; border: 2px dashed var(--soft); background: var(--glass); text-align: center; transition: transform .35s var(--ease-spring), background .2s; }
.dropzone span { font-size: 44px; transition: transform .5s var(--ease-spring); }
.dropzone:hover { background: var(--glass-2); transform: scale(1.02); }
.dropzone:hover span { transform: rotate(-12deg) scale(1.2); }
.dropzone small { color: var(--ink-2); }
.range { width: 100%; accent-color: var(--pink); }

/* stage */
.studio__stage { grid-area: stage; position: relative; display: grid; place-items: center; overflow: hidden;
  background: radial-gradient(circle at 1px 1px, rgb(255 255 255 / .09) 1px, transparent 0) 0 0 / 22px 22px; }
.card-wrap { position: relative; border-radius: 6px; box-shadow: 0 40px 100px rgb(0 0 0 / .5), 0 0 0 1px rgb(255 255 255 / .1);
  opacity: 0; transform: perspective(1200px) rotateX(24deg) translateY(80px) scale(.85); transition: opacity .6s, transform 1.1s var(--ease-spring); }
.studio.is-ready .card-wrap { opacity: 1; transform: none; }
.card-wrap.is-boing { animation: boing .6s var(--ease-spring); }
@keyframes boing { 30% { transform: scale(1.025, .975); } 60% { transform: scale(.99, 1.01); } }
.card-wrap .canvas-container { border-radius: 6px; overflow: hidden; }
.studio__hint { position: absolute; bottom: 10px; left: 0; right: 0; text-align: center; margin: 0; font-size: 13px; color: var(--ink-3); pointer-events: none; }
.drop-hint { position: absolute; inset: 16px; border: 3px dashed var(--pink); border-radius: 30px; display: grid; place-items: center; font-size: 60px; background: rgb(236 77 255 / .08); opacity: 0; pointer-events: none; transition: opacity .2s; }
.studio.is-dropping .drop-hint { opacity: 1; animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 50% { transform: scale(.98); } }

/* inspector */
.inspector { position: absolute; top: 12px; left: 50%; translate: -50% 0; z-index: 5; display: flex; align-items: center; gap: 2px; padding: 6px; max-width: calc(100% - 24px); overflow-x: auto; scrollbar-width: none;
  border-radius: 20px; background: rgb(255 255 255 / .96); color: var(--bg-0); box-shadow: 0 20px 50px rgb(0 0 0 / .35); }
.inspector.is-in { animation: inspIn .5s var(--ease-spring); }
@keyframes inspIn { from { opacity: 0; transform: translateY(-16px) scale(.9); } }
.ibtn { flex: none; display: grid; justify-items: center; gap: 1px; min-width: 50px; padding: 6px 6px 4px; border-radius: 14px; color: var(--bg-0); transition: background .2s, transform .3s var(--ease-spring); }
.ibtn span { font-size: 19px; line-height: 1.1; font-weight: 700; }
.ibtn small { font-size: 10px; font-weight: 500; opacity: .7; white-space: nowrap; }
.ibtn:hover { background: rgb(91 53 245 / .1); transform: translateY(-2px); }
.ibtn:active { transform: scale(.9); }
.ibtn .dot { display: inline-block; width: 20px; height: 20px; border-radius: 50%; border: 2px solid rgb(0 0 0 / .15); }
.isep { flex: none; width: 1px; height: 32px; background: rgb(0 0 0 / .12); margin: 0 4px; }
.pop { position: absolute; z-index: 6; width: 300px; max-height: 60%; overflow-y: auto; padding: 14px; border-radius: 20px; background: #fff; color: var(--bg-0); box-shadow: 0 30px 60px rgb(0 0 0 / .4); }
.pop.is-in { animation: inspIn .45s var(--ease-spring); }
.pop .grid--swatch .swatch-lg { border-color: rgb(0 0 0 / .08); }
.pop .swatch-lg--none { background: #eee; color: #555; }
.fontlist { display: grid; gap: 4px; }
.fontlist button { text-align: left; padding: 10px 14px; border-radius: 12px; font-size: 22px; transition: background .2s, transform .3s var(--ease-spring); }
.fontlist button:hover { background: rgb(91 53 245 / .08); transform: translateX(4px); }
.fontlist button.is-on { background: var(--accent); color: #fff; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.pop .chip { color: var(--bg-0); background: rgb(0 0 0 / .05); border-color: rgb(0 0 0 / .08); cursor: pointer; transition: transform .3s var(--ease-spring), background .2s; }
.pop .chip:hover { transform: scale(1.06); }
.pop .chip.is-on { background: var(--accent); color: #fff; }
.range-row { display: grid; grid-template-columns: auto 1fr 44px; gap: 12px; align-items: center; font-weight: 600; }
.range-row output { text-align: right; font-variant-numeric: tabular-nums; opacity: .6; }

/* export sheet */
.export { position: fixed; inset: 0; z-index: 80; display: grid; place-items: center; padding: 20px; }
.export__scrim { position: absolute; inset: 0; background: rgb(8 4 24 / .7); backdrop-filter: blur(10px); opacity: 0; transition: opacity .4s; }
.export__sheet { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 360px); gap: 34px; align-items: center; width: min(1000px, 100%); max-height: calc(100dvh - 40px); overflow: auto;
  padding: clamp(20px, 3vw, 40px); border-radius: 36px; background: color-mix(in oklab, var(--bg-1) 90%, transparent); border: 1px solid var(--line);
  opacity: 0; transform: translateY(60px) scale(.9); transition: opacity .4s, transform .7s var(--ease-spring); }
.export.is-open .export__scrim { opacity: 1; }
.export.is-open .export__sheet { opacity: 1; transform: none; }
.export__close { position: absolute; top: 16px; right: 16px; }
.export__preview { transform: perspective(900px) rotateX(var(--rx, 0)) rotateY(var(--ry, 0)); transition: transform .5s var(--ease-out); }
.export__preview img { max-height: 62vh; margin: 0 auto; border-radius: 10px; box-shadow: 0 30px 80px rgb(0 0 0 / .5); }
.export__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 22px; }
.export__grid .btn { width: 100%; padding: 0 14px; font-size: 15px; }

/* mobile: stage on top, drawer as bottom sheet, rail at the bottom */
@media (max-width: 760px) {
  .studio { grid-template-columns: minmax(0, 1fr); grid-template-rows: 56px minmax(0, 1fr) auto 70px; grid-template-areas: 'bar' 'stage' 'drawer' 'rail'; }
  .studio__bar { padding: 0 10px; gap: 6px; }
  .studio__name, .studio__spacer { display: none; }
  .studio__sizes { flex: 1 1 auto; min-width: 0; overflow-x: auto; scrollbar-width: none; }
  .studio__sizes button { flex: none; padding: 0 7px; font-size: 12px; }
  .studio__bar .icon-btn { width: 36px; height: 36px; flex: none; }
  .studio__bar .btn--sm { flex: none; }
  .hide-sm { display: none; }
  .studio__bar .btn--sm { padding: 0 12px; }
  .studio__rail { flex-direction: row; padding: 6px 8px max(6px, env(safe-area-inset-bottom)); border-right: 0; border-top: 1px solid var(--line); overflow-x: auto; }
  .tool { min-width: 62px; }
  .studio__drawer { width: auto !important; height: 0; transition: height .5s var(--ease-out); border-right: 0; border-top: 1px solid var(--line); }
  .studio.has-drawer .studio__drawer { height: 38dvh; }
  .drawer { width: 100%; }
  .grid { grid-template-columns: repeat(6, 1fr); }
  .grid--emoji { grid-template-columns: repeat(8, 1fr); }
  .grid--swatch, .grid--pattern { grid-template-columns: repeat(7, 1fr); }
  .presets { grid-template-columns: repeat(4, 1fr); }
  .preset { height: 56px; font-size: 18px; }
  .studio__hint { display: none; }
  .inspector { top: 8px; }
  .pop { width: calc(100% - 16px); }
  .export__sheet { grid-template-columns: 1fr; gap: 16px; }
  .export__preview img { max-height: 42vh; }
}