/* ============================================
   MD3 Bottom Sheet & Dialog
   ============================================ */
/* ---- MD3 Bottom Sheet (Function Menu) ---- */
.function-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--md-sys-duration-medium2) var(--md-sys-motion-easing-standard),
              visibility var(--md-sys-duration-medium2) var(--md-sys-motion-easing-standard);
}
.function-menu.show { opacity: 1; visibility: visible; }

.function-menu-overlay {
  position: absolute;
  inset: 0;
  background: var(--md-sys-color-scrim);
}

.function-menu-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  max-width: var(--app-max-width);
  margin: 0 auto;
  background: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-bottom-sheet-container-shape);
  padding-bottom: var(--safe-bottom);
  transform: translateY(100%);
  transition: transform var(--md-sys-duration-long2) var(--md-sys-motion-easing-emphasized-decelerate);
  max-height: 60vh;
  overflow-y: auto;
}
.function-menu.show .function-menu-content { transform: translateY(0); }

/* -- MD3 Drag Handle -- */
.function-menu-content::before {
  content: "";
  display: block;
  width: 32px;
  height: 4px;
  background: var(--md-bottom-sheet-drag-handle-color);
  border-radius: var(--md-sys-shape-corner-full);
  margin: 8px auto 0;
}

.function-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 8px;
  font-size: var(--md-sys-typescale-title-medium-size);
  font-weight: var(--md-sys-typescale-title-medium-weight);
  color: var(--md-sys-color-on-surface);
  letter-spacing: var(--md-sys-typescale-title-medium-tracking);
}

.function-menu-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--md-sys-shape-corner-full);
  color: var(--md-sys-color-on-surface-variant);
  transition: background var(--md-sys-duration-short3) ease;
}
.function-menu-close:hover { background: var(--md-sys-color-surface-variant); }

/* ---- MD3 Grid ---- */
.function-menu-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 8px 16px 20px;
}

.function-menu-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 4px;
  border-radius: var(--md-sys-shape-corner-medium);
  transition: background var(--md-sys-duration-short3) ease;
}
.function-menu-item:hover { background: var(--md-sys-color-surface-variant); }
.function-menu-item:active { background: var(--md-sys-color-surface-container-highest); }

.function-menu-item-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: var(--md-sys-color-secondary-container);
  border-radius: var(--md-sys-shape-corner-large);
  transition: transform var(--md-sys-duration-short3) var(--md-sys-motion-easing-emphasized-decelerate);
}
.function-menu-item:active .function-menu-item-icon { transform: scale(0.92); }

.function-menu-item-title {
  font-size: var(--md-sys-typescale-label-small-size);
  color: var(--md-sys-color-on-surface-variant);
  text-align: center;
  letter-spacing: var(--md-sys-typescale-label-small-tracking);
}

/* ---- MD3 Dialog (Image Gen, Search, etc) ---- */
.md-dialog-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--md-sys-color-scrim);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--md-sys-duration-medium2) var(--md-sys-motion-easing-standard),
              visibility var(--md-sys-duration-medium2) var(--md-sys-motion-easing-standard);
}
.md-dialog-overlay.show { opacity: 1; visibility: visible; }

.md-dialog {
  background: var(--md-sys-color-surface-container-high);
  border-radius: var(--md-dialog-container-shape);
  box-shadow: var(--md-dialog-container-elevation);
  width: 100%;
  max-width: 400px;
  max-height: 80vh;
  overflow-y: auto;
  padding: 24px;
  transform: scale(0.9);
  transition: transform var(--md-sys-duration-medium3) var(--md-sys-motion-easing-emphasized-decelerate);
}
.md-dialog-overlay.show .md-dialog { transform: scale(1); }

.md-dialog-title {
  font-size: var(--md-sys-typescale-headline-small-size);
  font-weight: var(--md-sys-typescale-headline-small-weight);
  color: var(--md-sys-color-on-surface);
  margin-bottom: 16px;
}

.md-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 24px;
}

/* ---- MD3 Text Button ---- */
.md-text-button {
  padding: 8px 16px;
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  letter-spacing: var(--md-sys-typescale-label-large-tracking);
  color: var(--md-sys-color-primary);
  border-radius: var(--md-text-button-container-shape);
  transition: background var(--md-sys-duration-short3) ease;
}
.md-text-button:hover { background: var(--md-sys-color-primary-100); }
.md-text-button:active { background: var(--md-sys-color-primary-200); }

/* ---- MD3 Filled Tonal Button ---- */
.md-tonal-button {
  padding: 10px 24px;
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  letter-spacing: var(--md-sys-typescale-label-large-tracking);
  color: var(--md-sys-color-on-secondary-container);
  background: var(--md-sys-color-secondary-container);
  border-radius: var(--md-filled-button-container-shape);
  transition: box-shadow var(--md-sys-duration-medium1) var(--md-sys-motion-easing-standard),
              background var(--md-sys-duration-medium1) var(--md-sys-motion-easing-standard);
}
.md-tonal-button:hover {
  background: color-mix(in srgb, var(--md-sys-color-secondary-container) 90%, black);
}
.md-tonal-button:active {
  background: color-mix(in srgb, var(--md-sys-color-secondary-container) 80%, black);
}

/* ---- Search Modal (MD3 Full-Screen Dialog) ---- */
.search-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--md-sys-color-scrim);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--md-sys-duration-medium2) var(--md-sys-motion-easing-standard),
              visibility var(--md-sys-duration-medium2) var(--md-sys-motion-easing-standard);
  padding: 0;
}
.search-modal-overlay.show { opacity: 1; visibility: visible; }

.search-modal-content {
  background: var(--md-sys-color-surface);
  width: 100%;
  max-width: var(--app-max-width);
  max-height: 100vh;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.search-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.search-input {
  flex: 1;
  font-size: var(--md-sys-typescale-body-large-size);
  color: var(--md-sys-color-on-surface);
  background: transparent;
  border: none;
  outline: none;
  padding: 8px 0;
}
.search-input::placeholder { color: var(--md-outlined-text-field-input-text-placeholder-color); }

.search-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--md-sys-shape-corner-full);
  color: var(--md-sys-color-on-surface-variant);
  transition: background var(--md-sys-duration-short3) ease;
}
.search-close:hover { background: var(--md-sys-color-surface-variant); }

.search-results {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

/* ---- Image Generation Modal ---- */
.image-gen-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--md-sys-color-scrim);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--md-sys-duration-medium2) var(--md-sys-motion-easing-standard),
              visibility var(--md-sys-duration-medium2) var(--md-sys-motion-easing-standard);
}
.image-gen-modal-overlay.show { opacity: 1; visibility: visible; }

.image-gen-modal {
  composes: md-dialog;
  max-width: 480px;
}

.image-gen-prompt-input {
  width: 100%;
  padding: 12px 16px;
  font-size: var(--md-sys-typescale-body-large-size);
  line-height: var(--md-sys-typescale-body-large-line);
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-outlined-text-field-container-shape);
  resize: none;
  min-height: 80px;
  font-family: var(--font-family);
  transition: border var(--md-sys-duration-medium1) var(--md-sys-motion-easing-standard);
}
.image-gen-prompt-input:focus {
  border: 2px solid var(--md-sys-color-primary);
  padding: 11px 15px;
}
.image-gen-prompt-input::placeholder { color: var(--md-outlined-text-field-input-text-placeholder-color); }