:root {
  color-scheme: light;
  --frame-bg: #ffffff;
  --frame-panel: #f5f6f8;
  --frame-line: #dfe3e9;
  --frame-text: #202738;
  --frame-muted: #505b6e;
  --frame-accent: #97400f;
  --frame-highlight: #fce5c8;
}
body {
  margin: 0;
  background: var(--frame-bg);
  color: var(--frame-text);
  font-family: var(--font-sans, "Segoe UI", system-ui, sans-serif);
}
[hidden] { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.frame-header {
  position: sticky;
  top: 0;
  z-index: 150;
  background: var(--frame-bg);
  border-bottom: 1px solid var(--frame-line);
}
.frame-nav-inner, .frame-page, .frame-footer {
  box-sizing: border-box;
  width: min(100%, 1120px);
  margin-inline: auto;
  padding-inline: clamp(14px, 3vw, 32px);
}
.frame-nav-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 8px 24px;
  align-items: center;
  min-height: 64px;
  padding-block: 8px;
}
.frame-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--frame-text);
  text-decoration: none;
  font-size: 21px;
  font-weight: 750;
  letter-spacing: -.05em;
}
.frame-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.frame-nav a, .frame-language {
  border: 1px solid transparent;
  border-radius: 4px;
  padding: 8px 10px;
  color: var(--frame-text);
  background: transparent;
  font: inherit;
  font-size: 14px;
  line-height: 1.25;
  text-decoration: none;
  white-space: nowrap;
}
.frame-language {
  grid-column: 3;
  grid-row: 1;
  border-color: var(--frame-line);
  cursor: pointer;
}
.frame-nav a:hover, .frame-language:hover { background: var(--frame-panel); }
.frame-nav a[aria-current="page"] {
  background: var(--frame-highlight);
  color: #73300d;
  font-weight: 650;
}
.frame-header :focus-visible, .frame-footer :focus-visible {
  outline: 2px solid var(--frame-accent);
  outline-offset: 2px;
}
.frame-page { padding-block: 30px 42px; }
.frame-page h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 4.2vw, 42px);
  line-height: 1.12;
  letter-spacing: -.036em;
}
.frame-page p, .frame-instructions ol {
  margin: 0 0 10px;
  color: var(--frame-muted);
  font-size: 16px;
  line-height: 1.65;
}
.frame-intro { max-width: 100%; }
.frame-updates, .frame-instructions {
  margin-top: 30px;
  border-top: 1px solid var(--frame-line);
  padding-top: 22px;
}
.frame-page h2 { margin: 0 0 12px; font-size: 23px; }
.frame-updates { scroll-margin-top: 145px; }
.frame-updates article {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 6px 14px;
  padding-block: 14px;
  border-bottom: 1px solid var(--frame-line);
}
.frame-updates time {
  color: var(--frame-accent);
  font: 13px/1.7 ui-monospace, Consolas, monospace;
}
.frame-updates h3 { margin: 0 0 3px; font-size: 17px; }
.frame-updates article p { margin: 0; }
.frame-footer {
  border-top: 1px solid var(--frame-line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  padding-block: 18px;
  color: var(--frame-muted);
  font-size: 14px;
}
.frame-footer a { color: var(--frame-accent); }
.frame-analytics-settings { padding: 0; border: 0; background: transparent; color: var(--frame-accent); font: inherit; text-decoration: underline; cursor: pointer; }
.frame-consent { position: fixed; z-index: 200; right: 16px; bottom: 16px; box-sizing: border-box; width: min(440px, calc(100% - 32px)); padding: 18px; border: 1px solid var(--frame-line); border-radius: 6px; background: var(--frame-bg); box-shadow: 0 4px 20px #20273820; }
.frame-consent p { margin: 0 0 12px; color: var(--frame-text); font-size: 14px; line-height: 1.5; }
.frame-consent > div { display: flex; flex-wrap: wrap; gap: 10px; }
.frame-consent button { border: 1px solid var(--frame-line); border-radius: 4px; padding: 8px 12px; font: inherit; font-size: 14px; cursor: pointer; }
.frame-consent button:first-child { color: #fff; background: var(--frame-accent); border-color: var(--frame-accent); }
.frame-tool-title { margin-bottom: 16px; }
.frame-instructions ol { padding-inline-start: 1.75em; }
.frame-instructions ol > li + li { margin-top: 5px; }
.frame-instructions .frame-tip {
  margin-top: 16px;
  max-width: 74ch;
  border-left: 2px solid var(--frame-accent);
  padding-left: 12px;
}
.frame-guide-section, .frame-related-tools { max-width: 100%; margin-top: 24px; }
.frame-guide-section h3, .frame-related-tools h3 { margin: 0 0 6px; font-size: 18px; }
.frame-related-tools ul { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 20px; list-style: none; margin: 0; padding: 0; }
.frame-related-tools a { color: var(--frame-accent); }
.frame-guide-section h2 { margin: 0 0 12px; font-size: 23px; line-height: 1.35; }
.frame-guide-section p { margin: 0 0 16px; }
.frame-guide-section h3 { margin: 22px 0 8px; }
.frame-guide-section a { color: var(--frame-accent); text-underline-offset: 3px; }
.frame-guide-figure { margin: 24px 0; }
.frame-guide-figure img { display: block; width: 100%; height: auto; border: 1px solid var(--frame-line); border-radius: 6px; }
.frame-guide-figure figcaption { margin-top: 8px; font-size: 13px; color: var(--frame-muted); }

/* The editor engine supplies the same file, preview and export controls on each page. */
.frame-page .app-container {
  height: auto;
  min-width: 0;
  border: 1px solid var(--frame-line);
  border-radius: 6px;
}
.frame-page .canvas-area { min-width: 0; }
.frame-page .canvas-container {
  height: clamp(270px, 40vh, 400px);
  flex: none;
  padding: 16px;
}
:where(body:not([data-tool="editor"])) .app-container:has(.drop-zone:not(.hidden)) .canvas-container { height: 260px; }
.frame-page .main-content { flex: none; }
.frame-page .timeline { min-width: 0; }
[data-tool="editor"] .app-container { height: min(800px, 100svh); }
[data-tool="editor"] .main-content, [data-tool="editor"] .canvas-container { flex: 1; }
[data-tool="editor"] .canvas-container { height: auto; }
:where(body:not([data-tool="editor"])) .app-container:has(.drop-zone:not(.hidden)) :is(.header, .canvas-toolbar, .sidebar) {
  display: none;
}
.frame-page .drop-zone { text-align: center; }
.frame-page .drop-text h2 { font-size: 20px; margin-bottom: 4px; }
.frame-page .drop-text p { font-size: 14px; }
.frame-page .drop-icon { width: 44px; height: 44px; }
.frame-page .drop-icon .icon { width: 22px; height: 22px; }
.reverse-label, .speed-export-controls { display: none; }

body[data-tool]:not([data-tool="editor"]) .sidebar {
  order: 1;
  flex-shrink: 0;
  border-right: 0;
  border-left: 1px solid var(--frame-line);
}
:where(body[data-tool]:not([data-tool="editor"])) :is(.sidebar-section, .mobile-menu-btn, .canvas-toolbar, .logo-icon) {
  display: none !important;
}
[data-tool="reverse"] .sidebar { display: none; }
[data-tool="make"] #timingSection,
[data-tool="optimize"] #optimizeSection,
[data-tool="resize"] #resizeSection,
[data-tool="speed"] #speedSection,
[data-tool="transparent"] #backgroundRemovalSection,
[data-tool="frames"] #exportSection {
  display: block !important;
}
:is([data-tool="optimize"], [data-tool="frames"]) #exportBtn,
[data-tool="frames"] #exportSection .tool-group > :not(#splitFramesBtn),
[data-tool="speed"] #speedSection .tool-group > .input-group {
  display: none !important;
}
[data-tool="speed"] .speed-export-controls { display: grid; gap: 8px; }
[data-tool="reverse"] #reverseFrames { width: auto; padding-inline: 10px; }
[data-tool="reverse"] .reverse-label { display: inline; }
body[data-tool]:not([data-tool="editor"]) .timeline-actions > :not(#reverseFrames) { display: none; }
body[data-tool]:not([data-tool="reverse"], [data-tool="editor"]) #reverseFrames { display: none; }
[data-tool="make"] .timeline-actions :is(#duplicateFrame, #deleteFrame) { display: inline-flex !important; }

@media (max-width: 930px) {
  .frame-nav-inner { grid-template-columns: 1fr auto; gap: 6px; }
  .frame-language { grid-column: 2; }
  .frame-nav { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  .frame-page { padding-top: 20px; }
  body[data-tool]:not([data-tool="editor"]) .main-content { flex-direction: column; }
  body[data-tool]:not([data-tool="editor"]) .sidebar {
    position: static;
    transform: none;
    width: auto;
    max-width: none;
    height: auto;
    border-left: 0;
    border-top: 1px solid var(--frame-line);
  }
}
@media (max-width: 480px) {
  .frame-nav a { font-size: 12px; padding: 8px 7px; }
  .frame-updates article { grid-template-columns: 1fr; }
}