/* V2-01 editor shell foundation.
   Stable shell, progressive complexity: the app bar, Source panel, workspace,
   Inspector and status bar exist from first load; loading an image changes
   workspace content and control availability, never the shell structure. */

[hidden] {
  display: none !important;
}

/* --- Design tokens --- */
:root {
  --ink: #111111;
  --paper: #fdfdfb;
  --accent: #ffd400;
  --accent-strong: #ffe14d;

  --chrome: #151515;
  --chrome-raised: #1f1f1f;
  --chrome-border: #313131;
  --chrome-text: #ecece7;
  --chrome-muted: #a6a69f;
  --workspace-bg: #0e0e0e;
}

/* --- Base --- */
body {
  margin: 0;
  background: var(--chrome);
  color: var(--chrome-text);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 14px;
  line-height: 1.4;
}

/* --- Skip link (first Tab stop) --- */
.skip-link {
  position: absolute;
  left: 0.75rem;
  top: 0.25rem;
  transform: translateY(-300%);
  background: var(--accent);
  color: var(--ink);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.45rem 0.7rem;
  border-radius: 6px;
  text-decoration: none;
  z-index: 60;
}

.skip-link:focus {
  transform: none;
  outline: 3px solid #ffffff;
  outline-offset: 2px;
}

/* --- App shell grid --- */
.app-shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) 340px;
  grid-template-rows: auto minmax(0, 1fr) auto;
  grid-template-areas:
    'bar bar bar'
    'source workspace inspector'
    'status status status';
}

/* --- App bar --- */
.app-bar {
  grid-area: bar;
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 0.5rem 0.9rem;
  flex-wrap: wrap;
  padding: 0.5rem 0.75rem;
  background: var(--chrome);
  border-bottom: 1px solid var(--chrome-border);
}

.app-title {
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--paper);
  margin: 0;
  white-space: nowrap;
}

.app-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-left: auto;
}

/* --- Panels (Source / Inspector) --- */
.panel {
  min-width: 0;
  padding: 0.85rem 0.75rem;
  background: var(--chrome);
}

.source-panel {
  grid-area: source;
  border-right: 1px solid var(--chrome-border);
}

.inspector-panel {
  grid-area: inspector;
  border-left: 1px solid var(--chrome-border);
}

.panel-title {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--chrome-muted);
  margin: 0 0 0.6rem;
}

.panel-empty {
  color: var(--chrome-muted);
  font-size: 0.8rem;
  margin: 0 0 0.75rem;
}

body[data-state='loaded'] .panel-empty {
  display: none;
}

.panel-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

/* --- Workspace --- */
.workspace {
  grid-area: workspace;
  min-width: 0;
  min-height: 320px;
  padding: 1rem;
  background: var(--workspace-bg);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 0.75rem;
}

.workspace:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -3px;
}

.workspace-content {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 1rem;
  min-width: 0;
  max-width: 100%;
}

.input-error {
  background: #3a1f1b;
  border: 1px solid #7a3a30;
  color: #ffb3a1;
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  margin: 0;
}

/* --- Dropzone --- */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  width: min(100%, 620px);
  min-height: 240px;
  padding: 2rem 1.25rem;
  border: 2px dashed #3d3d3d;
  border-radius: 12px;
  color: var(--chrome-text);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.dropzone:hover,
.dropzone:focus-within {
  border-color: var(--accent);
  background: rgba(255, 212, 0, 0.07);
}

/* Visible indication while the visually-hidden file input has focus. */
.dropzone:focus-within {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.dropzone.is-dragover {
  border-style: solid;
  border-color: var(--accent);
  background: rgba(255, 212, 0, 0.14);
}

.dropzone-icon {
  font-size: 2.25rem;
  line-height: 1;
}

.dropzone-note {
  color: var(--chrome-muted);
  font-size: 0.8rem;
}

/* --- Canvas --- */
.canvas-stage {
  display: grid;
  place-items: center;
  min-width: 0;
  max-width: 100%;
}

#memeCanvas {
  display: block;
  width: auto;
  height: auto;
  max-width: min(100%, 1000px);
  max-height: min(78dvh, 900px);
  border: 1px solid #3a3a3a;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* --- Buttons --- */
.btn {
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.1;
  min-height: 32px;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--chrome-border);
  border-radius: 6px;
  background: var(--chrome-raised);
  color: var(--chrome-text);
  cursor: pointer;
}

.btn:hover {
  background: #2b2b2b;
}

.btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.55;
  cursor: default;
}

.btn-download {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
  font-weight: 700;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.55);
}

.btn-download:hover {
  background: var(--accent-strong);
}

.btn-download:active:not(:disabled) {
  transform: translateY(2px);
  box-shadow: none;
}

.btn-download:focus-visible {
  outline-color: #ffffff;
}

.btn-clear-image,
.btn-cancel-gif {
  color: #ff9d89;
  border-color: #5b3931;
}

.btn-clear-image:hover,
.btn-cancel-gif:hover {
  background: #2c1b18;
}

.btn-clear-text {
  color: #ffc47c;
  border-color: #5b4931;
}

.btn-clear-text:hover {
  background: #2c2314;
}

.btn-cancel-gif {
  min-height: 26px;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
}

/* --- Inputs --- */
.form-control,
.form-select {
  background-color: #1c1c1c;
  color: var(--chrome-text);
  border: 1px solid var(--chrome-border);
  border-radius: 6px;
  padding: 0.35rem 0.5rem;
  font-size: 0.8rem;
  min-height: 32px;
}

.form-control::placeholder {
  color: #8b8b84;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23a6a69f'%3E%3Cpath d='M4 6l4 4 4-4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.35rem center;
  background-size: 14px;
  padding-right: 1.5rem;
}

.form-control:focus-visible,
.form-select:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
}

input[type='range'] {
  accent-color: var(--accent);
}

input[type='range']:focus-visible,
input[type='color']:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.export-select {
  width: auto;
  flex: 0 0 auto;
}

.quality-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--chrome-muted);
  margin: 0;
}

.quality-label input[type='range'] {
  width: 8rem;
}

/* --- Caption groups (Inspector) --- */
.caption-group {
  border: 1px solid var(--chrome-border);
  border-radius: 8px;
  padding: 0.6rem;
  margin: 0 0 0.6rem;
  background: #191919;
}

.caption-group-title {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--chrome-muted);
  margin: 0 0 0.5rem;
}

.caption-group-body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.caption-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.caption-text {
  flex: 1 1 8rem;
  min-width: 0;
}

.caption-options {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.caption-font {
  flex: 1 1 auto;
  min-width: 0;
}

.caption-color {
  flex: 0 0 auto;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 1px solid var(--chrome-border);
  border-radius: 6px;
  background: #1c1c1c;
  cursor: pointer;
}

.caption-sliders {
  flex-direction: column;
  align-items: stretch;
  gap: 0.45rem;
}

.caption-slider {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  font-size: 0.72rem;
  color: var(--chrome-muted);
  margin: 0;
}

.caption-slider input[type='range'] {
  flex: 1 1 auto;
  min-width: 0;
}

.caption-slider output,
.quality-label output {
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--chrome-text);
  min-width: 2ch;
  text-align: right;
}

/* --- Status bar / GIF export progress --- */
.status-bar {
  grid-area: status;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.3rem 0.75rem;
  min-height: 2.25rem;
  padding: 0.35rem 0.75rem;
  background: var(--chrome);
  border-top: 1px solid var(--chrome-border);
  font-size: 0.75rem;
  color: var(--chrome-muted);
}

.status-text {
  flex: 1 1 auto;
  min-width: 0;
  color: var(--chrome-text);
}

.status-warning {
  color: #ffd27a;
  margin: 0;
}

.status-hint {
  color: var(--chrome-muted);
}

.status-credit {
  margin-left: auto;
  color: var(--chrome-muted);
  font-size: 0.7rem;
  white-space: nowrap;
}

.gif-export-status {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  color: var(--chrome-muted);
}

.gif-export-phase {
  color: var(--chrome-text);
  font-weight: 600;
}

.gif-export-status progress {
  width: clamp(120px, 20vw, 220px);
  height: 0.65rem;
  accent-color: var(--accent);
}

.gif-export-percent {
  min-width: 4ch;
  text-align: right;
  color: var(--chrome-text);
}

/* --- Responsive: single-column stacked shell --- */
@media (max-width: 999px) {
  .app-shell {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto minmax(240px, 1fr) auto auto;
    grid-template-areas:
      'bar'
      'source'
      'workspace'
      'inspector'
      'status';
  }

  .source-panel {
    border-right: 0;
    border-bottom: 1px solid var(--chrome-border);
  }

  .inspector-panel {
    border-left: 0;
    border-top: 1px solid var(--chrome-border);
  }
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  .dropzone {
    transition: none;
  }

  .btn-download:active:not(:disabled) {
    transform: none;
  }
}

/* --- V2-02: application menus, mobile command dialog, dialogs --- */
.app-menubar {
  position: relative;
}

.app-menubar ul[role='menubar'] {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.app-menubar li {
  position: relative;
  margin: 0;
  list-style: none;
}

.menubar-trigger {
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--chrome-text);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  min-height: 30px;
  cursor: pointer;
}

.menubar-trigger:hover,
.menubar-trigger[aria-expanded='true'] {
  background: var(--chrome-raised);
}

.menubar-trigger:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.menu-popup {
  position: absolute;
  top: calc(100% + 0.3rem);
  left: 0;
  z-index: 40;
  min-width: 12rem;
  margin: 0;
  padding: 0.3rem;
  list-style: none;
  background: var(--chrome-raised);
  border: 1px solid var(--chrome-border);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.55);
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.menu-item {
  display: block;
  width: 100%;
  font: inherit;
  font-size: 0.8rem;
  color: var(--chrome-text);
  text-align: left;
  background: transparent;
  border: 0;
  border-radius: 5px;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
}

.menu-item:hover:not([aria-disabled='true']) {
  background: #2b2b2b;
}

.menu-item:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -2px;
}

.menu-item[aria-disabled='true'] {
  color: var(--chrome-muted);
  cursor: default;
}

.menu-item[role='menuitemcheckbox'] {
  position: relative;
  padding-left: 1.6rem;
}

.menu-item[role='menuitemcheckbox']::before {
  content: '';
  position: absolute;
  left: 0.55rem;
}

.menu-item[role='menuitemcheckbox'][aria-checked='true']::before {
  content: '✓';
}

.menu-separator {
  border: 0;
  border-top: 1px solid var(--chrome-border);
  margin: 0.25rem 0.2rem;
}

/* Mobile command surface */
.mobile-menu-button {
  display: none;
}

.mobile-menu-groups {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  max-height: 60dvh;
  overflow: auto;
  padding-right: 0.25rem;
}

.mobile-menu-group-title {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--chrome-muted);
  margin: 0.5rem 0 0.1rem;
}

.mobile-menu-item {
  min-height: 44px;
  text-align: left;
}

/* Dialogs */
.dialog {
  border: 1px solid var(--chrome-border);
  border-radius: 10px;
  background: var(--chrome-raised);
  color: var(--chrome-text);
  padding: 1rem;
  max-width: min(92vw, 26rem);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.dialog::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.dialog-title {
  font-size: 0.95rem;
  margin: 0 0 0.6rem;
}

.dialog-note {
  color: var(--chrome-muted);
  font-size: 0.8rem;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.shortcut-list {
  margin: 0 0 0.5rem;
}

.shortcut-list dt {
  font-weight: 600;
}

.shortcut-list dd {
  margin: 0 0 0.5rem;
  color: var(--chrome-muted);
}

.shortcut-list kbd {
  font-family: inherit;
  font-size: 0.75rem;
  background: var(--chrome);
  border: 1px solid var(--chrome-border);
  border-radius: 4px;
  padding: 0.05rem 0.3rem;
}

/* Panel visibility (shell presentation state, separate from data-state) */
@media (min-width: 1000px) {
  body[data-panel-source='hidden'] .source-panel {
    display: none;
  }

  body[data-panel-inspector='hidden'] .inspector-panel {
    display: none;
  }

  body[data-panel-source='hidden'][data-panel-inspector='hidden'] .app-shell {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      'bar'
      'workspace'
      'status';
  }

  body[data-panel-source='hidden']:not([data-panel-inspector='hidden']) .app-shell {
    grid-template-columns: minmax(0, 1fr) 340px;
    grid-template-areas:
      'bar bar'
      'workspace inspector'
      'status status';
  }

  body[data-panel-inspector='hidden']:not([data-panel-source='hidden']) .app-shell {
    grid-template-columns: 220px minmax(0, 1fr);
    grid-template-areas:
      'bar bar'
      'source workspace'
      'status status';
  }
}

@media (max-width: 999px) {
  .app-menubar {
    display: none;
  }

  .mobile-menu-button {
    display: inline-flex;
    align-items: center;
  }

  body[data-panel-source='hidden'] .source-panel,
  body[data-panel-inspector='hidden'] .inspector-panel {
    display: none;
  }
}