/* CodeClaw 🦞 — Neobrutalist Minimalist Design */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --yellow: #ffcc00;
  --black: #1a1a1a;
  --white: #fafafa;
  --border: 2px solid #1a1a1a;
  --border-thick: 3px solid #1a1a1a;
  --font: 'JetBrains Mono', 'Courier New', monospace;
  --header-h: 52px;
  --footer-h: 36px;
  --panel-header-h: 36px;
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: var(--font);
  background: var(--white);
  color: var(--black);
}

/* ─── HEADER ─────────────────────────────────────────────── */
.header {
  height: var(--header-h);
  background: var(--black);
  border-bottom: var(--border-thick);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
}

.brand-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--yellow);
  letter-spacing: -0.5px;
  user-select: none;
}

.header-actions {
  display: flex;
  gap: 10px;
}

/* ─── BUTTONS ─────────────────────────────────────────────── */
.btn {
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 6px 14px;
  background: var(--white);
  color: var(--black);
  border: var(--border-thick);
  border-color: var(--white);
  cursor: pointer;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
  outline: none;
  line-height: 1;
}

.btn:hover {
  background: var(--yellow);
  color: var(--black);
  border-color: var(--yellow);
}

.btn:active {
  background: #e6b800;
  border-color: #e6b800;
}

.btn-primary {
  background: var(--yellow);
  color: var(--black);
  border-color: var(--yellow);
}

.btn-primary:hover {
  background: var(--white);
  border-color: var(--white);
}

/* ─── LAYOUT SWITCHER ─────────────────────────────────────── */
.header-layout {
  display: flex;
  gap: 4px;
  margin-left: 16px;
}

.btn-layout {
  font-family: var(--font);
  font-size: 1rem;
  padding: 4px 8px;
  background: transparent;
  color: #666;
  border: 2px solid #444;
  cursor: pointer;
  line-height: 1;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}

.btn-layout:hover {
  color: var(--yellow);
  border-color: var(--yellow);
}

.btn-layout.active {
  background: var(--yellow);
  color: var(--black);
  border-color: var(--yellow);
}

/* ─── MAIN GRID ───────────────────────────────────────────── */
.editor-grid {
  position: fixed;
  top: var(--header-h);
  bottom: var(--footer-h);
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  border-right: var(--border);
  border-bottom: none;
}

/* Layout: 4 columns */
.editor-grid.layout-cols {
  grid-template-columns: 1fr 1fr 1fr 1fr;
  grid-template-rows: 1fr;
}

.editor-grid.layout-cols .panel {
  border-right: var(--border);
}

.editor-grid.layout-cols .panel:last-child {
  border-right: none;
}

/* Layout: code | preview (2 columns) */
.editor-grid.layout-split {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
}

.editor-grid.layout-split #panel-html {
  grid-column: 1;
  grid-row: 1;
}

.editor-grid.layout-split #panel-css {
  grid-column: 1;
  grid-row: 2;
}

.editor-grid.layout-split #panel-js {
  grid-column: 1;
  grid-row: 3;
}

.editor-grid.layout-split #panel-preview {
  grid-column: 2;
  grid-row: 1 / 4;
  border-right: none;
}

/* ─── PANELS ──────────────────────────────────────────────── */
.panel {
  display: flex;
  flex-direction: column;
  border-right: var(--border);
  border-bottom: var(--border);
  overflow: hidden;
  min-width: 0;
  min-height: 0;
}

.panel:nth-child(even) {
  border-right: none;
}

.panel-header {
  height: var(--panel-header-h);
  min-height: var(--panel-header-h);
  background: var(--yellow);
  border-bottom: var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--black);
  user-select: none;
}

.panel-editor {
  flex: 1;
  overflow: auto;
  min-height: 0;
}

.panel-preview-wrap {
  flex: 1;
  overflow: hidden;
  min-height: 0;
  position: relative;
}

/* ─── CODEMIRROR OVERRIDES ────────────────────────────────── */
.cm-editor {
  height: 100%;
  font-family: var(--font) !important;
  font-size: 13px;
  background: #111 !important;
}

.cm-editor .cm-scroller {
  overflow: auto;
  font-family: var(--font) !important;
}

.cm-editor.cm-focused {
  outline: 2px solid var(--yellow) !important;
  outline-offset: -2px;
}

.cm-editor .cm-gutters {
  background: #181818 !important;
  border-right: 1px solid #333 !important;
  color: #555 !important;
}

.cm-editor .cm-lineNumbers .cm-gutterElement {
  padding: 0 8px 0 4px;
  min-width: 32px;
}

.cm-editor .cm-activeLine {
  background: rgba(255, 204, 0, 0.06) !important;
}

.cm-editor .cm-activeLineGutter {
  background: rgba(255, 204, 0, 0.1) !important;
}

/* ─── FULLSCREEN BUTTON ───────────────────────────────────── */
.btn-fullscreen {
  margin-left: auto;
  background: transparent;
  border: 2px solid var(--black);
  color: var(--black);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  padding: 2px 8px;
  line-height: 1;
  font-family: var(--font);
  transition: background 0.1s, color 0.1s;
}

.btn-fullscreen:hover {
  background: var(--black);
  color: var(--yellow);
}

/* ─── FULLSCREEN MODE ─────────────────────────────────────── */
.panel.fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  border: none;
  display: flex;
  flex-direction: column;
}

.panel.fullscreen .panel-header {
  position: relative;
  z-index: 10;
  opacity: 0.3;
  transition: opacity 0.2s;
}

.panel.fullscreen:hover .panel-header {
  opacity: 1;
}

.panel.fullscreen .panel-editor,
.panel.fullscreen .panel-preview-wrap {
  flex: 1;
  min-height: 0;
}

/* ─── PREVIEW IFRAME ──────────────────────────────────────── */
#preview-frame {
  width: 100%;
  height: 100%;
  border: none;
  background: white;
  display: block;
}

/* ─── FOOTER ──────────────────────────────────────────────── */
.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--footer-h);
  background: var(--black);
  color: #666;
  font-size: 0.7rem;
  font-family: var(--font);
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.5px;
  border-top: var(--border);
  z-index: 100;
  user-select: none;
}

/* ─── TOAST ───────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: calc(var(--footer-h) + 16px);
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--yellow);
  color: var(--black);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 10px 20px;
  border: var(--border-thick);
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
  z-index: 999;
  white-space: nowrap;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .editor-grid {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(4, 1fr);
  }

  .panel:nth-child(even) {
    border-right: var(--border);
  }
}