/**
 * FlatPack Rich Text Editor Styles
 *
 * Styles for the TipTap-powered rich text editor surfaces.
 * All values use CSS variables from FlatPack's design system so they
 * automatically adapt to theme changes (light/dark/custom tokens).
 *
 * Structure:
 *   .flat-pack-richtext-wrapper       — outer wrapper (mirrors flat-pack-input-wrapper)
 *   .flat-pack-richtext-toolbar       — formatting toolbar
 *   .flat-pack-richtext-editor        — ProseMirror editor surface
 *   .flat-pack-richtext-bubble-menu   — BubbleMenu floating container
 *   .flat-pack-richtext-floating-menu — FloatingMenu container
 *   .ProseMirror                      — TipTap's contenteditable element
 */

@layer components {
  /* ── Wrapper ─────────────────────────────────────────────────────────────── */

  .flat-pack-richtext-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .flat-pack-richtext-wrapper.flat-pack-richtext--focused .flat-pack-richtext-editor {
    outline: none;
    box-shadow: 0 0 0 2px inset var(--color-ring);
    border-color: transparent;
  }

  /* ── Toolbar ─────────────────────────────────────────────────────────────── */

  .flat-pack-richtext-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 2px;
    padding: 4px 8px;
    background-color: var(--surface-muted-background-color);
    border: 1px solid var(--surface-border-color);
    border-bottom: none;
    border-radius: calc(var(--radius-md, 1rem) - 1px) calc(var(--radius-md, 1rem) - 1px) 0 0;
    min-height: 2.25rem;
  }

  .flat-pack-richtext-toolbar-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 6px;
    min-width: 1.75rem;
    height: 1.75rem;
    border: 1px solid transparent;
    border-radius: var(--radius-sm, 0.75rem);
    background: transparent;
    color: var(--surface-content-color);
    cursor: pointer;
    font-size: 0.75rem;
    line-height: 1;
    transition: background-color 0.1s, color 0.1s, border-color 0.1s;
    user-select: none;
  }

  .flat-pack-richtext-toolbar-btn:hover {
    background-color: var(--surface-background-color);
    border-color: var(--surface-border-color);
    color: var(--surface-content-color);
  }

  .flat-pack-richtext-toolbar-btn.is-active {
    background-color: var(--color-primary);
    color: var(--color-primary-text, #fff);
    border-color: var(--color-primary);
  }

  .flat-pack-richtext-toolbar-btn.is-active:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
  }

  .flat-pack-richtext-toolbar-btn.is-disabled,
  .flat-pack-richtext-toolbar-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
  }

  .flat-pack-richtext-toolbar-sep {
    width: 1px;
    height: 1.25rem;
    background-color: var(--surface-border-color);
    margin: 0 4px;
    flex-shrink: 0;
  }

  /* ── Editor surface ──────────────────────────────────────────────────────── */

  .flat-pack-richtext-editor {
    background-color: var(--surface-background-color);
    /* Width/color also come from FormField::ControlStyles#form_control_border_classes
       so host Tailwind preflight (often loaded last) cannot zero the field chrome. */
    border: 1px solid var(--surface-border-color);
    border-radius: 0 0 calc(var(--radius-md, 1rem) - 1px) calc(var(--radius-md, 1rem) - 1px);
    transition: border-color 0.15s;
    overflow: hidden;
  }

  /* When there is no toolbar, round all corners */
  .flat-pack-richtext-wrapper:not(:has(.flat-pack-richtext-toolbar)) .flat-pack-richtext-editor {
    border-radius: calc(var(--radius-md, 1rem) - 1px);
  }

  /* Bubble-only comments composer mode removes editor chrome and inner padding */
  .flat-pack-comments-richtext--bubble-only .flat-pack-richtext-editor {
    border: none !important;
  }

  .flat-pack-comments-composer-input .flat-pack-richtext-editor {
    border: none;
    box-shadow: none;
  }

  .flat-pack-comments-composer-input div[contenteditable].tiptap {
    padding: 0 !important;
  }

  .flat-pack-comments-composer-input .flat-pack-richtext-editor {
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
  }

  .flat-pack-comments-composer-input .flat-pack-richtext-toolbar {
    border-radius: calc(var(--radius-md, 1rem) - 1px);
    border: 1px solid var(--surface-border-color);
    margin-bottom: 0.5rem;
  }

  /* Error state border is set inline by Ruby; mirror focus ring to error */
  .flat-pack-richtext--error.flat-pack-richtext-wrapper.flat-pack-richtext--focused .flat-pack-richtext-editor {
    box-shadow: 0 0 0 2px inset var(--color-error-border);
    border-color: transparent;
  }

  /* Disabled state */
  .flat-pack-richtext--disabled .flat-pack-richtext-editor {
    opacity: 0.5;
    pointer-events: none;
    cursor: not-allowed;
  }

  .flat-pack-richtext--disabled .flat-pack-richtext-toolbar {
    opacity: 0.5;
    pointer-events: none;
  }

  /* View-mode — strips form-control chrome so the editor reads as plain content */
  .flat-pack-richtext--view-mode .flat-pack-richtext-editor {
    background: transparent;
    border: none;
    border-radius: 0;
  }

  .flat-pack-richtext--view-mode .flat-pack-richtext-editor .ProseMirror {
    padding: 0;
    min-height: auto;
    max-height: none;
    overflow-y: visible;
  }

  /* Override disabled dimming in view mode so content is fully readable */
  .flat-pack-richtext--view-mode.flat-pack-richtext--disabled .flat-pack-richtext-editor {
    opacity: 1;
    pointer-events: auto;
    cursor: default;
  }

  /* ── ProseMirror core styles ──────────────────────────────────────────────── */

  .flat-pack-richtext-editor .ProseMirror {
    /* Inset also comes from FormField::ControlStyles#form_control_padding_classes
       on the editor box so host Tailwind preflight cannot zero the field padding. */
    padding: var(--form-control-padding, 0.875rem);
    min-height: 8rem;
    max-height: 60vh;
    overflow-y: auto;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--surface-content-color);
    outline: none;
    cursor: text;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  /* Placeholder text */
  .flat-pack-richtext-editor .ProseMirror p.is-editor-empty:first-child::before {
    content: attr(data-placeholder);
    color: var(--surface-muted-content-color);
    pointer-events: none;
    height: 0;
    float: left;
  }

  /* Typography */
  .flat-pack-richtext-editor .ProseMirror h1,
  .flat-pack-richtext-editor .ProseMirror h2,
  .flat-pack-richtext-editor .ProseMirror h3,
  .flat-pack-richtext-editor .ProseMirror h4,
  .flat-pack-richtext-editor .ProseMirror h5,
  .flat-pack-richtext-editor .ProseMirror h6 {
    line-height: 1.3;
    font-weight: 700;
    color: var(--surface-content-color);
    margin-top: 1em;
    margin-bottom: 0.5em;
  }

  .flat-pack-richtext-editor .ProseMirror h1 { font-size: 1.875rem; }
  .flat-pack-richtext-editor .ProseMirror h2 { font-size: 1.5rem; }
  .flat-pack-richtext-editor .ProseMirror h3 { font-size: 1.25rem; }
  .flat-pack-richtext-editor .ProseMirror h4 { font-size: 1.125rem; }
  .flat-pack-richtext-editor .ProseMirror h5,
  .flat-pack-richtext-editor .ProseMirror h6 { font-size: 1rem; }

  .flat-pack-richtext-editor .ProseMirror p {
    margin-bottom: 0.75em;
  }

  .flat-pack-richtext-editor .ProseMirror p:last-child {
    margin-bottom: 0;
  }

  .flat-pack-richtext-editor .ProseMirror strong { font-weight: 700; }
  .flat-pack-richtext-editor .ProseMirror em     { font-style: italic; }
  .flat-pack-richtext-editor .ProseMirror u      { text-decoration: underline; }
  .flat-pack-richtext-editor .ProseMirror s      { text-decoration: line-through; }

  .flat-pack-richtext-editor .ProseMirror code {
    background-color: var(--surface-muted-background-color);
    border: 1px solid var(--surface-border-color);
    border-radius: var(--radius-sm, 0.75rem);
    padding: 0.1em 0.35em;
    font-size: 0.8125em;
    font-family: var(--font-mono);
    color: var(--surface-content-color);
  }

  .flat-pack-richtext-editor .ProseMirror pre {
    background-color: var(--surface-muted-background-color);
    border: 1px solid var(--surface-border-color);
    border-radius: var(--radius-md, 1rem);
    padding: 0.875rem 1rem;
    overflow-x: auto;
    font-size: 0.8125rem;
    margin-bottom: 0.75em;
  }

  .flat-pack-richtext-editor .ProseMirror pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: inherit;
  }

  .flat-pack-richtext-editor .ProseMirror blockquote {
    border-left: 3px solid var(--surface-border-color);
    padding-left: 1rem;
    color: var(--surface-muted-content-color);
    margin: 0 0 0.75em 0;
  }

  .flat-pack-richtext-editor ol {
    list-style: decimal;
  }
  .flat-pack-richtext-editor ul {
    list-style: disc;
  }
  .flat-pack-richtext-editor menu {
    list-style: initial;
  }

  .flat-pack-richtext-editor .ProseMirror ul,
  .flat-pack-richtext-editor .ProseMirror ol {
    padding-left: 1.5rem;
    margin-bottom: 0.75em;
  }

  .flat-pack-richtext-editor .ProseMirror li { margin-bottom: 0.25em; }

  .flat-pack-richtext-editor .ProseMirror hr {
    border: none;
    border-top: 1px solid var(--surface-border-color);
    margin: 1rem 0;
  }

  .flat-pack-richtext-editor .ProseMirror img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md, 1rem);
    display: block;
    margin: 0.5rem 0;
  }

  .flat-pack-richtext-editor .ProseMirror img.ProseMirror-selectednode {
    outline: 2px solid var(--color-primary);
  }

  /* Task list */
  .flat-pack-richtext-editor .ProseMirror ul[data-type="taskList"] {
    list-style: none;
    padding-left: 0;
  }

  .flat-pack-richtext-editor .ProseMirror ul[data-type="taskList"] li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .flat-pack-richtext-editor .ProseMirror ul[data-type="taskList"] li > label {
    flex-shrink: 0;
    margin-top: 0.1rem;
  }

  .flat-pack-richtext-editor .ProseMirror ul[data-type="taskList"] li > label input[type="checkbox"] {
    cursor: pointer;
  }

  /* Tables */
  .flat-pack-richtext-editor .ProseMirror table {
    border-collapse: collapse;
    width: 100%;
    margin-bottom: 0.75em;
    overflow: auto;
    table-layout: fixed;
  }

  .flat-pack-richtext-editor .ProseMirror th,
  .flat-pack-richtext-editor .ProseMirror td {
    border: 1px solid var(--surface-border-color);
    padding: 0.375rem 0.75rem;
    vertical-align: top;
    min-width: 60px;
    font-size: 0.875rem;
  }

  .flat-pack-richtext-editor .ProseMirror th {
    background-color: var(--surface-muted-background-color);
    font-weight: 600;
    text-align: left;
  }

  .flat-pack-richtext-editor .ProseMirror .selectedCell::after {
    background: color-mix(in oklab, var(--color-primary) 15%, transparent);
    content: "";
    display: block;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    pointer-events: none;
    position: absolute;
    z-index: 2;
  }

  .flat-pack-richtext-editor .ProseMirror .column-resize-handle {
    background-color: var(--color-primary);
    bottom: -2px;
    position: absolute;
    right: -2px;
    pointer-events: none;
    top: 0;
    width: 4px;
  }

  /* Highlight mark */
  .flat-pack-richtext-editor .ProseMirror mark {
    background-color: oklch(0.96 0.08 90);
    border-radius: 2px;
    padding: 0.05em 0.2em;
    color: inherit;
  }

  /* Mention */
  .flat-pack-richtext-mention {
    background-color: var(--color-secondary);
    border-radius: var(--radius-sm, 0.75rem);
    color: var(--surface-content-color);
    font-weight: 600;
    padding: 0.05em 0.3em;
    white-space: nowrap;
  }

  /* Gap cursor */
  .flat-pack-richtext-editor .ProseMirror .ProseMirror-gapcursor:after {
    border-top: 1px solid var(--surface-content-color);
  }

  /* Drop cursor */
  .flat-pack-richtext-editor .ProseMirror .ProseMirror-dropcursor {
    background-color: var(--color-primary);
  }

  /* Focus ring for focused nodes (Focus extension, full preset) */
  .flat-pack-richtext-focus {
    outline: 2px solid color-mix(in oklab, var(--color-ring) 40%, transparent);
    outline-offset: 2px;
    border-radius: var(--radius-sm, 0.75rem);
  }

  /* Details/Summary */
  .flat-pack-richtext-editor .ProseMirror details {
    border: 1px solid var(--surface-border-color);
    border-radius: var(--radius-md, 1rem);
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.75em;
  }

  .flat-pack-richtext-editor .ProseMirror summary {
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    list-style-position: inside;
  }

  /* ── Bubble Menu ─────────────────────────────────────────────────────────── */

  .flat-pack-richtext-bubble-menu {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 4px 6px;
    background-color: var(--surface-background-color);
    border: 1px solid var(--surface-border-color);
    border-radius: var(--radius-md, 1rem);
    box-shadow: 0 4px 12px oklch(0 0 0 / 0.12), 0 1px 4px oklch(0 0 0 / 0.08);
    z-index: 50;
  }

  .flat-pack-richtext-bubble-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px 5px;
    min-width: 1.625rem;
    height: 1.625rem;
    border: 1px solid transparent;
    border-radius: var(--radius-sm, 0.75rem);
    background: transparent;
    color: var(--surface-content-color);
    cursor: pointer;
    font-size: 0.75rem;
    line-height: 1;
    transition: background-color 0.1s, color 0.1s;
  }

  .flat-pack-richtext-bubble-btn:hover {
    background-color: var(--surface-muted-background-color);
    border-color: var(--surface-border-color);
  }

  .flat-pack-richtext-bubble-btn.is-active {
    background-color: var(--color-primary);
    color: var(--color-primary-text, #fff);
    border-color: var(--color-primary);
  }

  .flat-pack-richtext-bubble-sep {
    width: 1px;
    height: 1rem;
    background-color: var(--surface-border-color);
    margin: 0 3px;
    flex-shrink: 0;
  }

  /* ── Floating Menu ───────────────────────────────────────────────────────── */

  .flat-pack-richtext-floating-menu {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 4px;
    background-color: var(--surface-background-color);
    border: 1px solid var(--surface-border-color);
    border-radius: var(--radius-md, 1rem);
    box-shadow: 0 4px 12px oklch(0 0 0 / 0.12);
    z-index: 40;
    min-width: 10rem;
  }

  .flat-pack-richtext-floating-btn {
    padding: 6px 10px;
    text-align: left;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm, 0.75rem);
    color: var(--surface-content-color);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: background-color 0.1s;
  }

  .flat-pack-richtext-floating-btn:hover {
    background-color: var(--surface-muted-background-color);
  }

  /* ── Inline link / image popover ─────────────────────────────────────────── */

  .flat-pack-rt-link-popover {
    position: fixed;
    z-index: 999;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    background-color: var(--surface-background-color);
    border: 1px solid var(--surface-border-color);
    border-radius: var(--radius-md, 1rem);
    box-shadow: 0 4px 16px oklch(0 0 0 / 0.14), 0 1px 4px oklch(0 0 0 / 0.08);
    min-width: 20rem;
  }

  .flat-pack-rt-link-input {
    flex: 1;
    padding: 4px 8px;
    font-size: 0.8125rem;
    line-height: 1.4;
    border: 1px solid var(--surface-border-color);
    border-radius: var(--radius-sm, 0.75rem);
    background-color: var(--surface-background-color);
    color: var(--surface-content-color);
    outline: none;
    min-width: 0;
  }

  .flat-pack-rt-link-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px color-mix(in oklab, var(--color-primary) 15%, transparent);
  }

  .flat-pack-rt-link-apply-btn {
    flex-shrink: 0;
    padding: 4px 12px;
    font-size: 0.8125rem;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-primary-text, #fff);
    background-color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm, 0.75rem);
    cursor: pointer;
    white-space: nowrap;
    transition: background-color 0.1s, border-color 0.1s;
  }

  .flat-pack-rt-link-apply-btn:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
  }

  .flat-pack-rt-link-remove-btn {
    flex-shrink: 0;
    padding: 4px 10px;
    font-size: 0.8125rem;
    font-weight: 500;
    line-height: 1.4;
    color: var(--surface-content-color);
    background-color: transparent;
    border: 1px solid var(--surface-border-color);
    border-radius: var(--radius-sm, 0.75rem);
    cursor: pointer;
    white-space: nowrap;
    transition: background-color 0.1s;
  }

  .flat-pack-rt-link-remove-btn:hover {
    background-color: var(--surface-muted-background-color);
  }
}