/*
 * ReflexScript IDE — themed to kevinweekly.com.
 * Tokens mirror src/styles/global.css; layout structure mirrors the original
 * three-pane IDE so the JS doesn't need to change.
 */

:root {
  /* Site palette (light). */
  --bg: #fbfaf7;
  --bg-2: #f4f1ea;
  --ink: #1b1a17;
  --ink-2: #45433d;
  --muted: #6f6c63;
  --line: #e3ded2;
  --accent: #b8431f;
  --accent-soft: #f3e3da;

  /* Diagnostics. */
  --diag-error: #b8281f;
  --diag-warn: #b07020;
  --diag-ok: #2d7a47;
  --diag-warn-bg: #f5e9d2;

  /* Editor syntax (light — readable on cream). */
  --syntax-keyword: #b8431f;
  --syntax-type:    #2c63c8;
  --syntax-attr:    #8a5cc4;
  --syntax-unit:    #a8362b;
  --syntax-string:  #2d7a47;
  --syntax-number:  #c66a17;
  --syntax-comment: #9a958a;
  --syntax-operator:#45433d;
  --syntax-variable:#1b1a17;
  --editor-selection: #f3e3da;
  --editor-active-line: rgba(184, 67, 31, 0.045);
  --editor-cursor: #b8431f;

  /* Fonts (kept in sync with src/styles/global.css). */
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14130f;
    --bg-2: #1c1a15;
    --ink: #f3efe6;
    --ink-2: #d6d1c4;
    --muted: #9a958a;
    --line: #2c2a23;
    --accent: #e5703f;
    --accent-soft: #2a1f18;

    --diag-error: #e5703f;
    --diag-warn: #d99257;
    --diag-ok: #7cb98f;
    --diag-warn-bg: #2a1f12;

    --syntax-keyword: #e5703f;
    --syntax-type:    #6e9ad8;
    --syntax-attr:    #b78fe0;
    --syntax-unit:    #d97264;
    --syntax-string:  #7cb98f;
    --syntax-number:  #d99257;
    --syntax-comment: #7a766c;
    --syntax-operator:#d6d1c4;
    --syntax-variable:#f3efe6;
    --editor-selection: #2a1f18;
    --editor-active-line: rgba(229, 112, 63, 0.07);
    --editor-cursor: #e5703f;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 14px;
  overflow: hidden;            /* lock viewport — only inner panes scroll */
  -webkit-font-smoothing: antialiased;
}

body { display: flex; flex-direction: column; }

/* ---- License ribbon ---- */
.license-ribbon {
  flex: 0 0 auto;
  background: var(--accent-soft);
  color: var(--ink-2);
  padding: 6px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.45;
}
.license-ribbon-inner { max-width: 1600px; margin: 0 auto; }
.license-ribbon strong { color: var(--accent); font-family: var(--serif); font-weight: 600; }
.license-full { display: inline; margin-left: 8px; }
.license-full summary {
  cursor: pointer; display: inline;
  color: var(--accent); font-family: var(--mono); font-size: 11.5px;
}
.license-full[open] summary { color: var(--ink); }
.license-full-body {
  background: var(--bg-2);
  border: 1px solid var(--line);
  padding: 10px 16px;
  margin-top: 8px;
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--ink-2);
}
.license-full-body ol { margin: 4px 0 4px 18px; padding: 0; }
.license-full-body li { margin-bottom: 4px; }
.license-full-body a { color: var(--accent); }
.license-full-body code {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 1px 4px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 11px;
}

/* ---- Main app grid ---- */
.app {
  flex: 1 1 auto;
  min-height: 0;
  display: grid;
  grid-template-columns: 240px 1fr 280px;
  grid-template-rows: 1fr 220px;
  grid-template-areas:
    "tree   editor  options"
    "diags  diags   diags";
  gap: 8px;
  padding: 8px;
  overflow: hidden;
}

.file-explorer    { grid-area: tree; }
.editor-area      { grid-area: editor; }
.options-pane     { grid-area: options; }
.diagnostics-pane { grid-area: diags; }

/* ---- Common pane chrome ---- */
.file-explorer, .editor-area, .options-pane, .diagnostics-pane {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
}
.pane-head {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.pane-title { font-weight: 500; color: var(--accent); }
.pane-head-spacer { flex: 1; }

/* ---- File tree ---- */
.file-tree {
  flex: 1 1 0;
  min-height: 0;
  overflow: auto;
  padding: 6px 4px 8px;
  font-family: var(--mono);
  font-size: 12.5px;
}
.tree-node { user-select: none; }
.tree-dir-label,
.tree-file {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 6px;
  cursor: pointer;
  border-radius: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tree-dir-label { color: var(--ink-2); font-weight: 500; }
.tree-dir-label:hover { color: var(--accent); }
.tree-file { color: var(--ink-2); padding-left: 22px; }
.tree-file:hover { background: var(--accent-soft); color: var(--ink); }
.tree-file.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 500;
}
.tree-twisty { display: inline-block; width: 12px; text-align: center; color: var(--muted); }
.tree-icon   { display: inline-block; width: 14px; text-align: center; opacity: 0.85; }
.tree-children { padding-left: 14px; }
.tree-children.collapsed { display: none; }
.tree-empty { color: var(--muted); font-style: italic; padding: 8px 6px; }

/* ---- Tabs ---- */
.tab-bar {
  flex: 0 0 auto;
  display: flex;
  gap: 0;
  overflow-x: auto;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  min-height: 32px;
}
.tab-bar::-webkit-scrollbar { height: 4px; }
.tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px 6px 12px;
  border-right: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
  min-width: 0;
  background: transparent;
  border-top: 2px solid transparent;
  transition: color 0.12s, background 0.12s;
}
.tab:hover { color: var(--ink); }
.tab.active {
  background: var(--bg-2);
  color: var(--ink);
  border-top-color: var(--accent);
}
.tab .tab-name { overflow: hidden; text-overflow: ellipsis; max-width: 240px; }
.tab .tab-dirty { color: var(--accent); }
.tab .tab-readonly-badge {
  font-size: 9px;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 1px 4px;
  letter-spacing: 0.06em;
}
.tab .tab-close {
  font-size: 14px;
  line-height: 1;
  padding: 1px 4px;
  border-radius: 3px;
  opacity: 0.55;
}
.tab .tab-close:hover { background: var(--line); opacity: 1; color: var(--ink); }
.tab-empty-hint {
  padding: 8px 14px;
  color: var(--muted);
  font-style: italic;
  font-size: 12px;
}

/* ---- Tab context menu ---- */
.tab-menu {
  position: fixed;
  z-index: 1000;
  min-width: 200px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
  padding: 4px 0;
  font-size: 12px;
  user-select: none;
}
.tab-menu-item {
  padding: 6px 14px;
  cursor: pointer;
  color: var(--ink-2);
}
.tab-menu-item:hover { background: var(--accent-soft); color: var(--accent); }
.tab-menu-item.disabled { color: var(--muted); cursor: not-allowed; }
.tab-menu-item.disabled:hover { background: transparent; color: var(--muted); }
.tab-menu-sep { height: 1px; background: var(--line); margin: 4px 0; }

/* ---- Editor host ---- */
.editor-host {
  flex: 1 1 0;
  min-height: 0;
  overflow: hidden;
  background: var(--bg);
}
.editor-host .cm-editor {
  height: 100%;
  font-family: var(--mono);
  font-size: 13px;
}
.editor-host .cm-editor.cm-readonly .cm-content {
  caret-color: transparent;
  background: color-mix(in srgb, var(--ink) 3%, transparent);
}
.editor-host .cm-scroller { overflow: auto; }

.editor-statusbar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-top: 1px solid var(--line);
  background: var(--bg);
  font-family: var(--mono);
  font-size: 11.5px;
}
.status-path { color: var(--muted); }
.status-path.dirty { color: var(--accent); }

/* ---- Options form ---- */
.options-body {
  flex: 1 1 0;
  min-height: 0;
  overflow: auto;
  padding: 10px 12px;
}
.options-pane fieldset {
  border: 1px solid var(--line);
  border-radius: 8px;
  margin: 0 0 12px 0;
  padding: 8px 12px 10px;
  background: var(--bg);
}
.options-pane legend {
  padding: 0 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.options-pane label {
  display: block;
  margin: 5px 0;
  font-size: 12.5px;
  color: var(--ink-2);
  cursor: pointer;
}
.options-pane label:hover { color: var(--ink); }
.options-pane input[type="radio"],
.options-pane input[type="checkbox"] {
  margin-right: 8px;
  vertical-align: middle;
  accent-color: var(--accent);
}
.options-pane code {
  background: var(--bg-2);
  border: 1px solid var(--line);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink);
}

/* ---- Buttons / inputs ---- */
button {
  background: var(--bg);
  color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 4px 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s, background 0.12s;
}
button:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  color: var(--ink);
}
button:disabled { opacity: 0.4; cursor: not-allowed; }
button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 5px 14px;
}
button.primary:hover { filter: brightness(1.07); color: #fff; border-color: var(--accent); }

select, input[type="number"] {
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 12px;
  font-family: var(--mono);
}
input[type="number"] { width: 5em; }
input[type="number"]:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

/* ---- Diagnostics ---- */
.diagnostics {
  flex: 1 1 0;
  min-height: 0;
  overflow: auto;
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.55;
  color: var(--ink-2);
}
.diag-hint     { color: var(--muted); font-style: italic; }
.diag-summary  { font-size: 11px; color: var(--muted); }
.diag-license {
  color: var(--ink-2);
  background: var(--accent-soft);
  padding: 6px 10px;
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  margin: 0 0 8px;
  white-space: pre-wrap;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.5;
}
.diag-entry {
  padding: 3px 0 3px 8px;
  cursor: pointer;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
}
.diag-entry:hover { background: var(--bg); }
.diag-entry.error   { color: var(--diag-error); border-left-color: var(--diag-error); }
.diag-entry.warning { color: var(--diag-warn);  border-left-color: var(--diag-warn); }
.diag-entry .diag-suggestion {
  display: block;
  color: var(--muted);
  padding-left: 18px;
}
.diag-stdout {
  color: var(--muted);
  white-space: pre-wrap;
  margin-top: 8px;
  font-size: 11.5px;
}

/* ---- CodeMirror gutter diagnostics ---- */
.cm-gutter-diag { width: 14px; }
.cm-gutter-diag .cm-gutter-marker-error   { color: var(--diag-error); text-align: center; }
.cm-gutter-diag .cm-gutter-marker-warning { color: var(--diag-warn);  text-align: center; }
.cm-line-error   { background: color-mix(in srgb, var(--diag-error) 10%, transparent); }
.cm-line-warning { background: color-mix(in srgb, var(--diag-warn)  10%, transparent); }

/* ---- Footer ---- */
.page-footer {
  flex: 0 0 auto;
  text-align: center;
  padding: 6px 12px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
}

/* ---- Narrow screens ---- */
@media (max-width: 1100px) {
  .app { grid-template-columns: 200px 1fr 220px; }
}
@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: 160px 1fr 200px 200px;
    grid-template-areas:
      "tree"
      "editor"
      "options"
      "diags";
  }
}