:root {
  --paper: #f4f0e9;
  --paper-deep: #eae3d8;
  --surface: rgba(255, 253, 249, 0.88);
  --surface-solid: #fffdf9;
  --ink: #282321;
  --ink-soft: #756d68;
  --ink-faint: #a39a93;
  --plum: #704952;
  --plum-dark: #503238;
  --sage: #708074;
  --gold: #b59a72;
  --line: rgba(67, 55, 48, 0.14);
  --line-strong: rgba(67, 55, 48, 0.25);
  --shadow: 0 24px 70px rgba(67, 48, 39, 0.11);
  --serif: Georgia, "Songti SC", "STSong", "Noto Serif SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(255,255,255,.95), transparent 28%),
    radial-gradient(circle at 90% 92%, rgba(191,167,142,.18), transparent 24%),
    var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .16;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.08'/%3E%3C/svg%3E");
}

button, select, input { font: inherit; }
button { color: inherit; }
button:focus-visible, select:focus-visible, input:focus-visible, canvas:focus-visible {
  outline: 2px solid var(--plum);
  outline-offset: 3px;
}

.hidden { display: none !important; }

.app {
  position: relative;
  min-height: 100vh;
  isolation: isolate;
}

.app-header {
  min-height: 112px;
  display: grid;
  grid-template-columns: 260px minmax(320px, 1fr) 260px;
  align-items: center;
  gap: 28px;
  padding: 24px clamp(24px, 4vw, 68px);
  border-bottom: 1px solid var(--line);
}

.brand-lockup {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  color: inherit;
  text-decoration: none;
}

.brand-copy { display: flex; flex-direction: column; gap: 4px; }
.brand-copy strong {
  font: 500 14px/1 var(--serif);
  letter-spacing: 3px;
}
.brand-copy small {
  color: var(--ink-soft);
  font-size: 8px;
  letter-spacing: 2.3px;
}

.header-intro { text-align: center; }
.eyebrow, .section-index {
  margin: 0 0 7px;
  color: var(--plum);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2.1px;
}
.header-intro h1 {
  margin: 0;
  font: 400 clamp(20px, 2vw, 29px)/1.3 var(--serif);
  letter-spacing: 2px;
}

.save-state {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 11px;
}
.save-state-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sage);
  box-shadow: 0 0 0 5px rgba(112,128,116,.12);
}

.app-main {
  width: min(1440px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  min-height: calc(100vh - 112px);
}

.studio-panel {
  min-width: 0;
  padding: 34px clamp(24px, 5vw, 74px) 52px;
  border-right: 1px solid var(--line);
}

.studio-heading, .section-title-row, .ring-readout, .app-toolbar,
.selection-head, .selection-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.studio-heading { margin-bottom: 18px; }
.studio-heading h2, .section-title-row h2 {
  margin: 0;
  font: 400 21px/1.2 var(--serif);
  letter-spacing: 1px;
}

.readout-label, .selection-caption {
  display: block;
  margin-bottom: 4px;
  color: var(--ink-faint);
  font-size: 9px;
  letter-spacing: 1px;
}
.studio-note {
  margin: 0;
  color: var(--ink-faint);
  font-size: 10px;
  letter-spacing: .8px;
}
.studio-heading-actions { display: flex; align-items: center; }
.mobile-preset-select { display: none; }

.stage-card {
  width: min(100%, 760px);
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 26px;
  box-shadow: var(--shadow), inset 0 0 0 1px var(--line);
  overflow: hidden;
  backdrop-filter: blur(18px);
}

.stage-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1.22 / 1;
  min-height: 420px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  touch-action: none;
}

#ringCanvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.canvas-corner {
  position: absolute;
  left: 24px;
  pointer-events: none;
  color: rgba(69,60,55,.45);
  font: 600 8px/1 var(--sans);
  letter-spacing: 2px;
}
.canvas-corner-top { top: 22px; }
.canvas-corner-bottom { bottom: 20px; }

.ring-readout { gap: 28px; padding: 18px 22px 16px; }
.ring-info {
  color: var(--ink);
  font-size: 12px;
  line-height: 1.5;
}
.fit-disclaimer {
  max-width: 300px;
  margin: 0;
  color: var(--ink-faint);
  font-size: 9px;
  line-height: 1.6;
  text-align: right;
}

.composition-bar {
  min-height: 37px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 22px 14px;
  overflow: hidden;
}
.composition-empty { color: var(--ink-faint); font-size: 10px; }
.composition-chip {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  border: 2px solid rgba(255,255,255,.78);
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(60,45,38,.16);
}
.composition-more { color: var(--ink-soft); font-size: 10px; margin-left: 2px; }

.app-toolbar {
  gap: 10px;
  padding: 14px 18px 18px;
  border-top: 1px solid var(--line);
}
.history-actions { display: flex; gap: 6px; margin-right: auto; }

.icon-btn, .ghost-btn, .primary-btn, .danger-btn, .close-btn {
  border: 1px solid var(--line-strong);
  background: transparent;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, border-color .18s ease, opacity .18s ease;
}
.icon-btn:hover:not(:disabled), .ghost-btn:hover:not(:disabled), .primary-btn:hover:not(:disabled) { transform: translateY(-1px); }
.icon-btn:disabled, .ghost-btn:disabled, .primary-btn:disabled { cursor: not-allowed; opacity: .32; }
.icon-btn {
  width: 39px;
  height: 39px;
  border-radius: 50%;
  font-size: 20px;
}
.ghost-btn, .primary-btn {
  min-height: 42px;
  padding: 0 20px;
  border-radius: 99px;
  font-size: 12px;
  letter-spacing: .5px;
}
.primary-btn {
  min-width: 160px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  color: #fff;
  border-color: var(--ink);
  background: var(--ink);
}
.primary-btn:hover:not(:disabled) { background: var(--plum-dark); border-color: var(--plum-dark); }

.workbench {
  min-width: 0;
  background: rgba(255,253,249,.45);
}
.workbench-scroll {
  position: sticky;
  top: 0;
  height: calc(100vh - 112px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}
.workbench-section { padding: 26px 28px; border-bottom: 1px solid var(--line); }
.section-title-row { gap: 16px; margin-bottom: 22px; }
.section-title-row h2 { font-size: 18px; }
.segmented-control {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,255,255,.5);
}
.segmented-control button {
  min-width: 36px;
  height: 28px;
  padding: 0 9px;
  border: 0;
  border-radius: 8px;
  color: var(--ink-soft);
  background: transparent;
  cursor: pointer;
  font-size: 10px;
}
.segmented-control button.active {
  color: #fff;
  background: var(--ink);
  box-shadow: 0 3px 9px rgba(40,35,33,.16);
}

.inspiration-section { padding-top: 24px; padding-bottom: 24px; }
.inspiration-heading { align-items: flex-end; margin-bottom: 16px; }
.inspiration-heading small { color: var(--ink-faint); font-size: 9px; }
.preset-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; }
.preset-grid button {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 11px 5px 10px;
  border: 1px solid var(--line);
  border-radius: 13px;
  color: var(--ink-soft);
  background: rgba(255,255,255,.42);
  cursor: pointer;
  font-size: 9px;
  transition: transform .18s ease, background .18s ease;
}
.preset-grid button:hover { transform: translateY(-2px); background: rgba(255,255,255,.85); }
.preset-orb {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  box-shadow: inset 6px 7px 10px rgba(255,255,255,.55), inset -5px -6px 8px rgba(67,43,42,.2), 0 4px 8px rgba(67,43,42,.14);
}

.preset-orb.rose { background: linear-gradient(145deg,#f5d7dd,#aa5d70); }
.preset-orb.moon { background: linear-gradient(145deg,#eff8f3,#7199a0 70%,#7b6397); }
.preset-orb.earth { background: linear-gradient(145deg,#d7b787,#55483d 65%,#1f2221); }
.preset-orb.blank {
  position: relative;
  border: 1px dashed rgba(112,73,82,.65);
  background: rgba(255,255,255,.58);
  box-shadow: none;
}
.preset-orb.blank::before,
.preset-orb.blank::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 1px;
  background: var(--plum);
  transform: translate(-50%,-50%);
}
.preset-orb.blank::after { transform: translate(-50%,-50%) rotate(90deg); }

.quick-actions {
  margin: 18px 20px 0;
  padding: 17px;
  border: 1px solid rgba(112,73,82,.23);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(255,255,255,.82), rgba(240,226,224,.7));
  box-shadow: 0 12px 26px rgba(65,45,42,.08);
}
.selection-head { padding-bottom: 13px; border-bottom: 1px solid var(--line); }
.selection-head span { display: block; color: var(--ink-faint); font-size: 9px; margin-bottom: 3px; }
.selection-head strong { font: 500 15px/1 var(--serif); }
.close-btn { width: 28px; height: 28px; border: 0; border-radius: 50%; font-size: 19px; }
.close-btn:hover { background: rgba(112,73,82,.1); }
.selection-content { align-items: flex-end; gap: 10px; padding-top: 13px; }
.selection-sizes button { padding: 0 6px; min-width: 43px; }
.danger-btn {
  height: 34px;
  flex: 0 0 auto;
  padding: 0 10px;
  border-radius: 9px;
  color: var(--plum);
  font-size: 9px;
}
.danger-btn:hover { border-color: var(--plum); background: rgba(112,73,82,.06); }

.palette-panel { border-bottom: 0; }
.library-heading { align-items: flex-end; margin-bottom: 18px; }
.search-shell {
  width: 90px;
  height: 34px;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 8px;
  border-bottom: 1px solid var(--line-strong);
  color: var(--ink-faint);
}
.search-shell input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font-size: 10px;
}
.search-shell input::placeholder { color: var(--ink-faint); }

.category-select-shell {
  position: relative;
  display: none;
}
.category-select-shell select {
  appearance: none;
  min-width: 108px;
  height: 34px;
  padding: 0 29px 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 99px;
  color: var(--plum);
  background: rgba(255,255,255,.52);
  cursor: pointer;
  font-size: 10px;
}
.category-select-shell > span {
  position: absolute;
  right: 11px;
  top: 50%;
  color: var(--plum);
  pointer-events: none;
  transform: translateY(-58%);
}

.palette-tabs {
  display: flex;
  gap: 7px;
  padding-bottom: 13px;
  overflow-x: auto;
  scrollbar-width: none;
}
.palette-tabs::-webkit-scrollbar { display: none; }
.palette-tab {
  flex: 0 0 auto;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--ink-soft);
  background: transparent;
  cursor: pointer;
  font-size: 9px;
}
.palette-tab.active {
  color: #fff;
  border-color: var(--plum);
  background: var(--plum);
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 9px;
}
.bead-swatch {
  min-width: 0;
  min-height: 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 10px 3px 8px;
  border: 1px solid transparent;
  border-radius: 15px;
  color: var(--ink);
  background: rgba(255,255,255,.36);
  cursor: grab;
  touch-action: pan-y;
  user-select: none;
  transition: transform .18s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease;
}
.bead-swatch:hover {
  z-index: 1;
  transform: translateY(-2px);
  border-color: var(--line-strong);
  background: rgba(255,255,255,.82);
  box-shadow: 0 9px 20px rgba(65,45,42,.08);
}
.bead-swatch:active { cursor: grabbing; }
.bead-swatch canvas { width: 48px; height: 48px; pointer-events: none; }
.bead-swatch strong { margin-top: 2px; font: 500 10px/1.2 var(--serif); }
.bead-swatch small { color: var(--ink-faint); font-size: 8px; }
.palette-empty { padding: 28px 0; text-align: center; color: var(--ink-faint); font-size: 11px; }

.drag-ghost {
  position: fixed;
  top: 0;
  left: 0;
  width: 72px;
  height: 72px;
  pointer-events: none;
  display: none;
  z-index: 999;
  filter: drop-shadow(0 8px 14px rgba(42,32,29,.25));
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: calc(100vw - 32px);
  padding: 12px 16px;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 99px;
  color: #fff;
  background: rgba(40,35,33,.93);
  box-shadow: 0 16px 40px rgba(40,35,33,.22);
  font-size: 11px;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 14px);
  transition: opacity .22s ease, transform .22s ease;
}
.toast.show { opacity: 1; pointer-events: auto; transform: translate(-50%,0); }
.toast button { border: 0; color: #ead0d5; background: transparent; cursor: pointer; font-size: 11px; text-decoration: underline; }

@media (max-width: 1040px) {
  .app-header { grid-template-columns: 230px 1fr; }
  .save-state { display: none; }
  .app-main { grid-template-columns: minmax(0,1fr) 350px; }
  .studio-panel { padding-left: 28px; padding-right: 28px; }
  .palette-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

@media (min-width: 761px) {
  .app-header {
    height: 84px;
    min-height: 84px;
    padding-top: 12px;
    padding-bottom: 12px;
  }
  .app-main {
    height: calc(100vh - 84px);
    min-height: 0;
    overflow: hidden;
  }
  .studio-panel {
    height: 100%;
    min-height: 0;
    display: grid;
    grid-template-rows: auto minmax(0,1fr);
    padding-top: 24px;
    padding-bottom: 24px;
  }
  .stage-card {
    height: 100%;
    min-height: 0;
    display: grid;
    grid-template-rows: minmax(220px,1fr) auto auto;
  }
  .stage-wrap {
    height: 100%;
    min-height: 220px;
    aspect-ratio: auto;
  }
  .ring-readout {
    position: absolute;
    right: 18px;
    bottom: 16px;
    z-index: 3;
    min-height: 0;
    gap: 0;
    padding: 8px 12px;
    border: 1px solid rgba(255,255,255,.72);
    border-radius: 99px;
    background: rgba(255,253,249,.76);
    box-shadow: 0 5px 16px rgba(62,45,39,.09);
    backdrop-filter: blur(9px);
    -webkit-backdrop-filter: blur(9px);
  }
  .ring-readout > div { display: flex; align-items: center; gap: 6px; }
  .readout-label { display: inline; margin: 0; font-size: 8px; letter-spacing: .5px; }
  .ring-info { max-width: none; font-size: 10px; line-height: 1; white-space: nowrap; }
  .fit-disclaimer { display: none; }
  .app-toolbar {
    gap: 8px;
    padding: 8px 14px 9px;
  }
  .icon-btn {
    width: 34px;
    height: 34px;
    font-size: 18px;
  }
  .ghost-btn, .primary-btn {
    min-height: 36px;
    padding: 0 17px;
    font-size: 11px;
  }
  .primary-btn {
    min-width: 148px;
    gap: 18px;
  }
  .workbench {
    height: 100%;
    min-height: 0;
    overflow: hidden;
  }
  .workbench-scroll {
    position: static;
    height: 100%;
    overflow-y: auto;
  }
}

@media (min-width: 761px) and (max-height: 850px) {
  .stage-card { grid-template-rows: minmax(220px,1fr) auto; }
  .composition-bar { display: none; }
}

@media (max-width: 760px) {
  body {
    height: 100vh;
    height: 100svh;
    padding: 0;
    overflow: hidden;
    overscroll-behavior: none;
  }
  .app {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    height: 100vh;
    height: 100svh;
    min-height: 0;
    overflow: hidden;
  }
  .app-header {
    height: 72px;
    min-height: 72px;
    grid-template-columns: auto minmax(0,1fr);
    gap: 14px;
    padding: 12px 16px;
  }
  .brand-lockup { margin: 0; }
  .brand-copy { gap: 3px; }
  .brand-copy strong { font-size: 11px; letter-spacing: 2.2px; }
  .brand-copy small { font-size: 6px; letter-spacing: 1.7px; }
  .header-intro { min-width: 0; text-align: right; }
  .header-intro h1 {
    overflow: hidden;
    font-size: clamp(14px,4.2vw,17px);
    letter-spacing: 1px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .eyebrow { display: none; }

  .app-main {
    height: calc(100vh - 133px - env(safe-area-inset-bottom));
    height: calc(100svh - 133px - env(safe-area-inset-bottom));
    min-height: 0;
    display: grid;
    grid-template-columns: minmax(0,1fr);
    grid-template-rows: minmax(328px,calc(58% + 28px)) minmax(0,1fr);
    overflow: hidden;
  }
  .studio-panel {
    min-height: 0;
    display: grid;
    grid-template-rows: auto minmax(0,1fr);
    padding: 8px 12px 7px;
    overflow: hidden;
    border-right: 0;
  }
  .studio-heading { margin-bottom: 6px; padding: 0 4px; }
  .studio-heading .section-index { display: none; }
  .studio-heading h2 { font-size: 15px; letter-spacing: .7px; }
  .studio-note { display: none; }
  .mobile-preset-select {
    position: relative;
    display: block;
  }
  .mobile-preset-select select {
    appearance: none;
    min-width: 96px;
    height: 30px;
    padding: 0 25px 0 11px;
    border: 1px solid var(--line-strong);
    border-radius: 99px;
    color: var(--plum);
    background: rgba(255,255,255,.52);
    font-size: 10px;
    letter-spacing: .3px;
  }
  .mobile-preset-select > span {
    position: absolute;
    right: 10px;
    top: 50%;
    color: var(--plum);
    pointer-events: none;
    transform: translateY(-58%);
  }
  .stage-card {
    position: relative;
    height: 100%;
    min-height: 0;
    display: grid;
    grid-template-rows: minmax(0,1fr);
    border-radius: 16px;
    box-shadow: inset 0 0 0 1px var(--line);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .stage-wrap { min-height: 0; height: 100%; aspect-ratio: auto; border-bottom: 0; }
  .canvas-corner { left: 17px; font-size: 7px; }
  .canvas-corner-top { top: 13px; }
  .canvas-corner-bottom { bottom: 12px; }
  .ring-readout {
    position: absolute;
    right: 13px;
    bottom: 11px;
    z-index: 3;
    min-height: 0;
    gap: 0;
    padding: 7px 10px;
    border: 1px solid rgba(255,255,255,.72);
    border-radius: 99px;
    background: rgba(255,253,249,.76);
    box-shadow: 0 5px 16px rgba(62,45,39,.09);
    backdrop-filter: blur(9px);
    -webkit-backdrop-filter: blur(9px);
  }
  .ring-readout > div { display: flex; align-items: center; gap: 5px; }
  .readout-label { display: inline; margin: 0; font-size: 7px; letter-spacing: .4px; }
  .ring-info { max-width: none; font-size: 9px; line-height: 1; white-space: nowrap; }
  .fit-disclaimer { display: none; }
  .composition-bar { display: none; }

  .workbench {
    min-height: 0;
    overflow: hidden;
    border-top: 1px solid var(--line-strong);
    border-radius: 18px 18px 0 0;
    background: rgba(255,253,249,.72);
    box-shadow: none;
  }
  .workbench-scroll {
    position: static;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }
  .workbench-section { padding: 11px 14px; }
  .inspiration-section { display: none; }

  .palette-panel { padding-top: 12px; padding-bottom: 76px; }
  .library-heading { align-items: center; margin-bottom: 9px; }
  .library-heading .section-index { display: none; }
  .library-heading h2 { font-size: 15px; }
  .search-shell, .palette-tabs { display: none; }
  .category-select-shell { display: block; }
  .category-select-shell select { min-width: 102px; height: 30px; font-size: 9px; }
  .palette-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .bead-swatch { min-height: 78px; padding: 7px 3px 6px; }
  .bead-swatch canvas { width: 38px; height: 38px; }
  .bead-swatch strong { font-size: 11px; }
  .bead-swatch small { font-size: 9px; }

  .quick-actions {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(79px + env(safe-area-inset-bottom));
    z-index: 45;
    margin: 0;
    padding: 15px;
    border-radius: 18px;
    box-shadow: 0 20px 50px rgba(45,33,30,.24);
  }
  .selection-content { align-items: center; }

  .app-toolbar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    gap: 7px;
    padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--line);
    background: rgba(250,247,242,.94);
    box-shadow: 0 -10px 30px rgba(55,43,37,.08);
    backdrop-filter: blur(20px);
  }
  .history-actions { gap: 4px; }
  .icon-btn { width: 36px; height: 36px; }
  .ghost-btn, .primary-btn { min-height: 40px; padding: 0 13px; }
  .primary-btn { min-width: 130px; gap: 10px; }
  .toast { bottom: calc(92px + env(safe-area-inset-bottom)); }
}

@media (max-width: 390px) {
  .palette-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .preset-grid button { padding-left: 2px; padding-right: 2px; }
  .history-actions .icon-btn { width: 34px; }
  .ghost-btn { padding: 0 10px; }
  .primary-btn { min-width: 116px; padding: 0 12px; }
}

@media (max-width: 350px), (max-width: 760px) and (max-height: 690px) {
  .app-header { height: 64px; min-height: 64px; }
  .app-main {
    height: calc(100vh - 125px - env(safe-area-inset-bottom));
    height: calc(100svh - 125px - env(safe-area-inset-bottom));
    grid-template-rows: minmax(306px,calc(55% + 28px)) minmax(0,1fr);
  }
  .studio-panel { padding-top: 6px; }
  .studio-heading { margin-bottom: 4px; }
  .palette-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
}

@media (max-width: 350px) {
  .palette-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}