.studio-page {
  --studio-blue: #153d66;
  --studio-coral: #ef615d;
  --studio-yellow: #ffd166;
  --studio-paper: #fffdf8;
  background: #f7f4eb;
  color: #20364d;
}

.studio-page::after { display: none; }
.studio-page * { box-sizing: border-box; }
.studio-header { position: sticky; top: 0; z-index: 40; transition: transform .24s ease, box-shadow .24s ease; will-change: transform; }
.studio-header.is-hidden { transform: translateY(-105%); box-shadow: none; }
.studio-header .nav-wrap { min-height: 82px; }
.studio-home-link {
  color: var(--studio-blue);
  font-weight: 800;
  text-decoration: none;
  border: 2px solid #d7e0e8;
  border-radius: 999px;
  padding: .62rem 1rem;
  background: rgba(255,255,255,.86);
}

.studio-main { width: min(1480px, calc(100% - 32px)); margin: 0 auto; padding: 40px 0 64px; }
.studio-intro { display: block; text-align: center; max-width: 820px; margin: 0 auto 28px; }
.studio-intro .kicker,
.studio-intro h1,
.studio-intro p { display: block; text-align: center; margin-left: auto; margin-right: auto; }
.studio-intro h1 { color: var(--studio-blue); font-size: clamp(2.6rem, 5vw, 4.7rem); margin-top: 0; margin-bottom: 8px; line-height: .98; max-width: none; }
.studio-intro p:last-child { font-size: 1.08rem; line-height: 1.65; margin-top: 0; margin-bottom: 0; max-width: 700px; }

.studio-shell { display: grid; gap: 18px; width: 100%; min-width: 0; }
.template-panel,
.paint-workspace { min-width: 0; max-width: 100%; background: rgba(255,255,255,.9); border: 1px solid rgba(21,61,102,.12); box-shadow: 0 18px 50px rgba(32,54,77,.1); border-radius: 28px; }
.template-panel { max-width: 100%; min-width: 0; padding: 18px; overflow: hidden; }
.panel-heading,
.toolbar-heading { display: flex; gap: 10px; align-items: center; margin-bottom: 15px; }
.panel-heading > span,
.toolbar-heading > span,
.canvas-heading > div > span {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  border-radius: 50%;
  background: var(--studio-coral);
  color: white;
  font-weight: 900;
}
.panel-heading h2 { font-size: 1.08rem; line-height: 1.1; margin: 0; color: var(--studio-blue); }
.panel-heading p { margin: 3px 0 0; font-size: .78rem; color: #66788a; }
.template-carousel-wrap { position: relative; width: 100%; max-width: 100%; min-width: 0; padding: 0 45px; overflow: hidden; }
.template-carousel { display: grid; width: 100%; max-width: 100%; grid-auto-flow: column; grid-auto-columns: clamp(160px, 16vw, 190px); gap: 12px; overflow-x: scroll; overflow-y: hidden; overscroll-behavior-inline: contain; scroll-snap-type: x mandatory; scrollbar-width: auto; scrollbar-color: var(--studio-coral) #e8eef3; padding: 3px 3px 15px; }
.template-carousel::-webkit-scrollbar { height: 11px; }
.template-carousel::-webkit-scrollbar-track { background: #e8eef3; border-radius: 999px; }
.template-carousel::-webkit-scrollbar-thumb { background: var(--studio-coral); border: 2px solid #e8eef3; border-radius: 999px; }
.template-card {
  appearance: none;
  min-width: 160px;
  scroll-snap-align: start;
  border: 2px solid transparent;
  padding: 7px;
  background: white;
  border-radius: 17px;
  color: var(--studio-blue);
  font: inherit;
  font-size: .78rem;
  font-weight: 800;
  line-height: 1.2;
  text-align: left;
  cursor: pointer;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.template-thumb { display: grid; place-items: center; width: 100%; aspect-ratio: 3/4; overflow: hidden; border: 1px solid #e2e8ec; border-radius: 11px; background: #fff; }
.template-thumb img { display: block; width: 100%; height: 100%; object-fit: contain; object-position: center; background: white; }
.template-meta { display: block; min-height: 4.35rem; padding: 8px 4px 3px; }
.template-meta small { display: block; min-height: 2.45em; color: #718497; font-size: .68rem; font-weight: 800; line-height: 1.22; }
.template-meta strong { display: block; margin-top: 4px; color: var(--studio-blue); font-size: .8rem; line-height: 1.2; }
.blank-sheet { position: relative; background: linear-gradient(#fff,#fffdf8); box-shadow: inset 0 0 0 8px #f6f6f2; }
.blank-sheet::before { content: ""; position: absolute; inset: 18px; border: 2px dashed #c9d6df; border-radius: 8px; }
.blank-sheet i { position: relative; z-index: 1; display: grid; place-items: center; width: 54px; height: 54px; border-radius: 50%; background: #e7f6f4; color: var(--studio-blue); font: 400 2.2rem/1 sans-serif; }
.template-card:hover { transform: translateY(-2px); }
.template-card.is-active { border-color: var(--studio-coral); background: #fff2ef; box-shadow: 0 6px 18px rgba(239,97,93,.2); }
.gallery-arrow { position: absolute; z-index: 2; top: 42%; width: 38px; height: 56px; border: 0; border-radius: 999px; background: var(--studio-blue); color: white; font: 700 2rem/1 sans-serif; cursor: pointer; box-shadow: 0 7px 18px rgba(21,61,102,.22); }
.gallery-arrow:hover { background: var(--studio-coral); }
.gallery-prev { left: 0; }
.gallery-next { right: 0; }
.toolbar-mode { display: grid; gap: 9px; margin-bottom: 15px; padding: 11px; border: 1px solid rgba(21,61,102,.14); border-radius: 15px; background: #eaf7f5; }
.toolbar-mode > div:first-child { display: grid; gap: 2px; }
.toolbar-mode strong { color: var(--studio-blue); font-size: .84rem; }
.toolbar-mode #mode-description { color: #607689; font-size: .69rem; line-height: 1.3; }
.mode-switch-wrap { display: flex; align-items: center; gap: 9px; color: var(--studio-blue); font-size: .78rem; font-weight: 900; }
.mode-switch { position: relative; display: inline-block; width: 66px; height: 34px; flex: 0 0 66px; }
.mode-switch input { position: absolute; opacity: 0; pointer-events: none; }
.mode-switch i { position: absolute; inset: 0; border: 2px solid #9eb5c6; border-radius: 999px; background: white; cursor: pointer; transition: .2s background,.2s border-color; }
.mode-switch i::after { content: ""; position: absolute; width: 24px; height: 24px; left: 3px; top: 3px; border-radius: 50%; background: var(--studio-coral); box-shadow: 0 2px 7px rgba(21,61,102,.2); transition: .2s transform; }
.mode-switch input:checked + i { background: var(--studio-blue); border-color: var(--studio-blue); }
.mode-switch input:checked + i::after { transform: translateX(32px); background: #fff; }
.mode-switch input:focus-visible + i { outline: 3px solid #1b87b7; outline-offset: 3px; }
.is-simple-mode .pro-only { display: none !important; }
.is-simple-mode .paint-workspace { grid-template-columns: 270px minmax(0,1fr); }
.is-simple-mode .paint-toolbar { align-self: start; }
.template-card:focus-visible,
.gallery-arrow:focus-visible,
.tool-button:focus-visible,
.brush-button:focus-visible,
.zoom-button:focus-visible,
.focus-mode-button:focus-visible,
.color-swatch:focus-visible,
.soft-button:focus-visible,
.saved-color:focus-within { outline: 3px solid #1b87b7; outline-offset: 2px; }

.paint-workspace { display: grid; grid-template-columns: 300px minmax(0, 1fr); padding: 14px; min-height: 0; overflow: hidden; }
.paint-toolbar { padding: 4px 16px 4px 0; border-right: 1px solid #dde4e8; }
.toolbar-heading strong { color: var(--studio-blue); }
.tool-group { display: grid; grid-template-columns: 1fr; gap: 8px; }
.tool-button,
.brush-button,
.soft-button {
  appearance: none;
  border: 2px solid #d7e0e8;
  border-radius: 13px;
  background: white;
  color: var(--studio-blue);
  padding: 9px 11px;
  min-height: 43px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  text-align: left;
}
.tool-button span { display: inline-block; width: 28px; }
.tool-button.is-active { background: var(--studio-blue); color: white; border-color: var(--studio-blue); }
.brush-group,
.color-group { border: 0; padding: 18px 0 0; margin: 0; }
.brush-group legend,
.color-group legend,
.range-control { color: var(--studio-blue); font-weight: 900; font-size: .84rem; }
.brush-options { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; margin-top: 9px; }
.brush-button { min-height: 40px; padding: 7px; font-size: .75rem; text-align: center; }
.brush-button span { display: block; font-size: 1rem; line-height: 1; margin-bottom: 3px; }
.brush-button.is-active { border-color: var(--studio-coral); color: #a82c36; background: #fff0ee; box-shadow: inset 0 0 0 1px var(--studio-coral); }
.color-palette { display: grid; max-width: 100%; grid-template-columns: repeat(5, 36px); gap: 10px; margin-top: 10px; }
.color-swatch {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid white;
  box-shadow: 0 0 0 1px #c8d0d7;
  background: var(--swatch);
  cursor: pointer;
}
.light-swatch { box-shadow: 0 0 0 1px #9fb0bd, inset 0 0 0 1px #e5e9ec; }
.color-swatch.is-active { box-shadow: 0 0 0 3px var(--studio-blue); transform: scale(.82); }
.custom-label { display: block; margin: 12px 0 7px; color: #62788a; font-size: .7rem; line-height: 1.3; }
.saved-colors { display: grid; grid-template-columns: repeat(5, 36px); gap: 8px; }
.saved-color { position: relative; display: grid; place-items: center; width: 36px; height: 36px; border: 2px solid white; border-radius: 50%; background: var(--custom-color); box-shadow: 0 0 0 1px #c8d0d7; overflow: hidden; cursor: pointer; }
.saved-color input { position: absolute; inset: -10px; width: 55px; height: 55px; opacity: 0; cursor: pointer; }
.saved-color span { position: relative; z-index: 1; color: white; font-size: .68rem; font-weight: 900; text-shadow: 0 1px 3px rgba(0,0,0,.75); pointer-events: none; }

.tip-controls { margin-top: 18px; padding-top: 16px; border-top: 1px solid #e1e7eb; }
.tip-preview-wrap { display: flex; justify-content: space-between; align-items: center; min-height: 74px; color: var(--studio-blue); font-size: .78rem; font-weight: 900; }
.tip-preview,
.brush-cursor { position: relative; border: 1px solid rgba(21,61,102,.7); border-radius: 50%; background-color: transparent; }
.tip-preview::before,
.tip-preview::after,
.brush-cursor::before,
.brush-cursor::after { content: ""; position: absolute; left: 50%; top: 50%; background: rgba(21,61,102,.72); transform: translate(-50%,-50%); }
.tip-preview::before,
.brush-cursor::before { width: 58%; height: 1px; }
.tip-preview::after,
.brush-cursor::after { width: 1px; height: 58%; }
.tip-preview i,
.brush-cursor i { position: absolute; left: 50%; top: 50%; width: 4px; height: 4px; border: 1px solid rgba(255,255,255,.9); border-radius: 50%; background: var(--studio-blue); transform: translate(-50%,-50%); }
.range-control { display: block; margin-top: 10px; }
.range-control output { float: right; color: #64778b; }
.range-control input { display: block; width: 100%; margin-top: 7px; accent-color: var(--studio-coral); }
.gradient-help { margin: 11px 0 0; color: #64798b; font-size: .69rem; line-height: 1.35; }
.zoom-control { display: grid; gap: 9px; margin-top: 18px; padding-top: 15px; border-top: 1px solid #e1e7eb; }
.zoom-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--studio-blue); font-size: .84rem; }
.zoom-heading output { color: #64778b; font-weight: 800; }
.zoom-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.zoom-button {
  appearance: none;
  min-height: 46px;
  padding: 7px 5px;
  border: 2px solid #d7e0e8;
  border-radius: 13px;
  background: white;
  color: var(--studio-blue);
  font: inherit;
  font-size: .72rem;
  font-weight: 800;
  cursor: pointer;
}
.zoom-button span { display: block; margin-bottom: 2px; font-size: 1.08rem; line-height: 1; }
.zoom-button.is-active { border-color: var(--studio-blue); background: var(--studio-blue); color: white; }
.zoom-control p { margin: 0; color: #64798b; font-size: .69rem; line-height: 1.35; }
.history-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 18px; }
.soft-button { font-size: .76rem; padding-inline: 6px; text-align: center; }
.soft-button:hover:not(:disabled) { border-color: var(--studio-blue); }
.soft-button:disabled { opacity: .42; cursor: not-allowed; }

.canvas-column { min-width: 0; padding: 2px 0 0 16px; }
.canvas-heading { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 43px; margin: 0 4px 10px; }
.canvas-heading > div { display: flex; align-items: center; gap: 9px; color: var(--studio-blue); }
.canvas-heading > .canvas-heading-actions { justify-content: flex-end; min-width: 0; }
.canvas-heading strong { font-size: 1rem; }
.canvas-heading p { margin: 0; font-size: .78rem; color: #68798a; text-align: right; }
.focus-mode-button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 35px;
  padding: 5px 10px;
  border: 2px solid #d7e0e8;
  border-radius: 999px;
  background: #fff;
  color: var(--studio-blue);
  font: inherit;
  font-size: .72rem;
  font-weight: 900;
  white-space: nowrap;
  cursor: pointer;
}
.focus-mode-button span:first-child { font-size: 1rem; line-height: 1; }
.focus-mode-button:hover,
.focus-mode-button[aria-pressed="true"] { border-color: var(--studio-blue); background: var(--studio-blue); color: white; }
.canvas-viewport { width: min(100%, 660px); max-width: 100%; margin: 0 auto; }
.canvas-frame { width: 100%; max-width: 660px; aspect-ratio: 1075 / 1521; margin: 0 auto; position: relative; overflow: hidden; border-radius: 17px; border: 2px solid #d8e0e6; background: white; box-shadow: 0 8px 26px rgba(32,54,77,.1); touch-action: none; user-select: none; }
.canvas-frame.is-zoomed { box-shadow: 0 8px 26px rgba(32,54,77,.14), 0 0 0 3px rgba(21,61,102,.1); }
.canvas-stage { position: absolute; inset: 0; z-index: 1; transform-origin: 0 0; }
#paint-canvas,
#line-art { position: absolute; inset: 0; width: 100%; height: 100%; }
#paint-canvas { z-index: 1; cursor: none; }
#line-art { z-index: 2; object-fit: contain; mix-blend-mode: multiply; pointer-events: none; }
#line-art[hidden] { display: none; }
.brush-cursor { position: absolute; z-index: 4; pointer-events: none; transform: translate(-50%,-50%); border-color: rgba(21,61,102,.82); background: transparent; box-shadow: 0 0 0 1px rgba(255,255,255,.7); }
.brush-cursor[hidden] { display: none; }
.canvas-loading { position: absolute; inset: 0; z-index: 5; display: grid; place-items: center; background: rgba(255,255,255,.86); color: var(--studio-blue); font-weight: 900; }
.canvas-loading[hidden] { display: none; }
.save-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin: 13px auto 0; width: min(100%, 660px); }
.save-row p { margin: 0; font-size: .84rem; color: #5f7182; }
.save-row .button { border: 0; cursor: pointer; white-space: nowrap; }

.studio-note { margin: 24px auto 0; padding: 22px 28px; border-radius: 24px; background: #dff4f1; color: var(--studio-blue); }
.studio-note h2 { text-align: center; font-size: 1.35rem; margin: 0 0 14px; }
.studio-note > div { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.studio-note p { margin: 0; text-align: center; }
.studio-note kbd { display: inline-block; padding: .05rem .34rem; border: 1px solid rgba(21,61,102,.24); border-bottom-width: 2px; border-radius: 5px; background: rgba(255,255,255,.78); font: 800 .72rem/1.5 "Nunito",sans-serif; white-space: nowrap; }
.studio-footer { background: var(--studio-blue); color: white; padding: 28px max(24px, calc((100vw - 1180px)/2)); display: flex; align-items: center; gap: 22px; }
.studio-footer > a { display: flex; align-items: center; color: white; text-decoration: none; font-size: 1.25rem; }
.studio-footer img { width: 42px; height: 42px; object-fit: contain; margin-right: 9px; }
.studio-footer p { margin: 0 auto 0 0; opacity: .82; }
.studio-footer nav { display: flex; gap: 15px; }
.studio-footer nav a { color: white; opacity: .88; }

@media (max-width: 1100px) {
  .paint-workspace { grid-template-columns: 270px minmax(0,1fr); }
  .studio-note > div { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 821px) {
  .paint-toolbar { padding: 2px 12px 2px 0; }
  .toolbar-heading { margin-bottom: 8px; }
  .toolbar-mode { grid-template-columns: 1fr auto; align-items: center; gap: 7px; margin-bottom: 9px; padding: 8px 9px; }
  .toolbar-mode #mode-description { font-size: .64rem; }
  .mode-switch-wrap { gap: 6px; font-size: .7rem; }
  .mode-switch { width: 56px; height: 30px; flex-basis: 56px; }
  .mode-switch i::after { width: 20px; height: 20px; }
  .mode-switch input:checked + i::after { transform: translateX(26px); }
  .tool-group { grid-template-columns: 1fr 1fr; gap: 6px; }
  .tool-button { min-height: 38px; padding: 6px 7px; font-size: .76rem; text-align: center; }
  .tool-button span { display: block; width: auto; margin-bottom: 1px; line-height: 1; }
  .brush-group,
  .color-group { padding-top: 10px; }
  .brush-options { grid-template-columns: repeat(4,1fr); gap: 5px; margin-top: 6px; }
  .brush-button { min-height: 35px; padding: 5px 2px; font-size: .63rem; }
  .brush-button span { font-size: .88rem; margin-bottom: 1px; }
  .color-palette { grid-template-columns: repeat(6,34px); gap: 7px; margin-top: 7px; }
  .color-swatch,
  .saved-color { width: 34px; height: 34px; }
  .custom-label { margin: 8px 0 5px; }
  .saved-colors { grid-template-columns: repeat(5,34px); gap: 7px; }
  .tip-controls { margin-top: 10px; padding-top: 9px; }
  .tip-preview-wrap { min-height: 46px; }
  .range-control { margin-top: 5px; font-size: .76rem; }
  .range-control input { margin-top: 2px; }
  .gradient-help { margin-top: 5px; }
  .zoom-control { gap: 6px; margin-top: 10px; padding-top: 9px; }
  .zoom-button { min-height: 38px; padding: 4px; }
  .zoom-button span { display: inline; margin: 0 3px 0 0; font-size: .9rem; }
  .zoom-control p { display: none; }
  .history-actions { margin-top: 10px; }
  .soft-button { min-height: 38px; padding-top: 5px; padding-bottom: 5px; }

  .studio-focus-mode { overflow: hidden; }
  .studio-focus-mode .studio-header,
  .studio-focus-mode .studio-intro,
  .studio-focus-mode .template-panel,
  .studio-focus-mode .studio-note,
  .studio-focus-mode .studio-footer { display: none; }
  .studio-focus-mode .studio-main { width: 100%; height: 100vh; height: 100dvh; margin: 0; padding: 8px; overflow: hidden; }
  .studio-focus-mode .studio-shell { display: block; height: 100%; }
  .studio-focus-mode .paint-workspace { height: 100%; grid-template-columns: 280px minmax(0,1fr); padding: 10px; border-radius: 20px; }
  .studio-focus-mode .paint-toolbar { min-height: 0; overflow-y: auto; scrollbar-width: thin; scrollbar-color: rgba(21,61,102,.35) transparent; }
  .studio-focus-mode .canvas-column { display: grid; min-height: 0; grid-template-rows: auto minmax(0,1fr) auto; padding-top: 0; }
  .studio-focus-mode .canvas-heading { margin-bottom: 6px; }
  .studio-focus-mode .canvas-viewport { display: flex; width: 100%; height: 100%; min-height: 0; align-items: center; justify-content: center; }
  .studio-focus-mode .canvas-frame { width: auto; height: 100%; max-width: 100%; max-height: 100%; margin: 0; }
  .studio-focus-mode .save-row { margin-top: 6px; }
}

@media (max-width: 820px) {
  .studio-main { width: min(100% - 18px, 720px); padding-top: 24px; }
  .studio-intro { margin-bottom: 20px; }
  .studio-intro h1 { font-size: 2.65rem; }
  .studio-intro p:last-child { font-size: .98rem; }
  .template-carousel-wrap { padding-inline: 0; }
  .template-carousel { grid-auto-columns: 155px; }
  .template-card { min-width: 155px; }
  .gallery-arrow { display: none; }
  .mode-switch-wrap { align-self: stretch; justify-content: flex-end; }
  .paint-workspace { grid-template-columns: 1fr; padding: 12px; }
  .is-simple-mode .paint-workspace { grid-template-columns: 1fr; }
  .paint-toolbar { border-right: 0; border-bottom: 1px solid #dde4e8; padding: 0 0 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 13px 18px; }
  .toolbar-heading,
  .toolbar-mode,
  .tool-group { grid-column: 1/-1; }
  .zoom-control { grid-column: 1/-1; margin-top: 0; }
  .tool-group { grid-template-columns: repeat(4,1fr); }
  .tool-button { text-align: center; padding: 8px 5px; font-size: .82rem; }
  .tool-button span { display: block; width: auto; margin-bottom: 2px; }
  .brush-group,
  .color-group { padding: 0; }
  .tip-controls { margin: 0; padding: 0; border-top: 0; }
  .history-actions { grid-column: 1/-1; margin: 0; }
  .canvas-column { padding: 14px 0 0; }
  .canvas-heading { align-items: flex-start; }
  .canvas-heading p { max-width: 46%; }
  .focus-mode-button { display: none; }
  .studio-note > div { grid-template-columns: 1fr; gap: 9px; }
  .studio-footer { flex-wrap: wrap; justify-content: center; text-align: center; }
  .studio-footer p { width: 100%; margin: 0; }
}

@media (max-width: 520px) {
  .studio-header .nav-wrap { min-height: 70px; padding-inline: 13px; }
  .studio-header .brand-logo { width: 45px; height: 45px; }
  .studio-header .header-wordmark { font-size: 1.25rem; }
  .studio-home-link { font-size: .78rem; padding: .5rem .7rem; }
  .studio-intro .kicker { font-size: .72rem; }
  .template-panel { padding: 13px; border-radius: 21px; }
  .template-carousel { grid-auto-columns: 148px; gap: 9px; }
  .template-card { min-width: 148px; }
  .template-meta small { font-size: .66rem; }
  .paint-workspace { border-radius: 21px; }
  .paint-toolbar { grid-template-columns: 1fr; }
  .brush-group,
  .color-group,
  .tip-controls { grid-column: 1/-1; }
  .brush-options { grid-template-columns: repeat(4,1fr); }
  .brush-button { font-size: .66rem; padding-inline: 3px; }
  .color-palette { grid-template-columns: repeat(5,36px); gap: 9px; }
  .tip-preview-wrap { min-height: 64px; }
  .canvas-heading { display: block; }
  .canvas-heading p { max-width: none; text-align: left; margin: 7px 0 0 41px; }
  .save-row { align-items: stretch; flex-direction: column; }
  .save-row .button { width: 100%; }
  .studio-note { padding: 20px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .template-card { transition: none; }
}