/* ==================================================================
   Tinkerbench — drafting-desk aesthetic
   Warm paper chrome + blueprint grid, deep-ink editors,
   construction-orange accents. Fraunces + IBM Plex Mono.
   ================================================================== */

:root {
  --paper: #f3edde;
  --paper-hi: #fbf7ec;
  --paper-lo: #eae2cd;
  --ink: #20293a;
  --ink-soft: #5b6474;
  --line: rgba(32, 41, 58, 0.16);

  --accent: #f1550f;
  --accent-deep: #c8440a;
  --green: #2fbf71;

  --c-html: #f1550f;
  --c-css: #2f6fe4;
  --c-js: #e8a400;

  --code-bg: #161e2e;
  --code-gutter: #121826;
  --code-fg: #ece7d8;

  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --display: "Fraunces", Georgia, serif;

  --radius: 10px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  font-family: var(--sans);
  color: var(--ink);
  background-color: var(--paper);
  /* blueprint grid on warm paper */
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    radial-gradient(ellipse at 20% -10%, rgba(241, 85, 15, 0.06), transparent 55%),
    radial-gradient(ellipse at 110% 110%, rgba(47, 111, 228, 0.05), transparent 50%);
  background-size: 28px 28px, 28px 28px, 100% 100%, 100% 100%;
}

body.dragging { user-select: none; cursor: col-resize; }
body.dragging iframe { pointer-events: none; }

/* ------------------------------------------------------------------
   Top bar
   ------------------------------------------------------------------ */
.topbar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 12px 20px;
  border-bottom: 2px solid var(--ink);
  background: linear-gradient(rgba(251, 247, 236, 0.65), rgba(251, 247, 236, 0.2));
  animation: drop 0.5s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  align-self: center;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--ink);
  color: var(--accent);
  font-family: var(--display);
  font-style: italic;
  font-weight: 700;
  font-size: 17px;
  transform: rotate(-4deg);
  box-shadow: 3px 3px 0 rgba(32, 41, 58, 0.25);
}

.brand-name {
  margin: 0;
  font-family: var(--display);
  font-style: italic;
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.01em;
}

.brand-sub {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}

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

/* ------------------------------------------------------------------
   Buttons — stamped, hand-set feel
   ------------------------------------------------------------------ */
.btn {
  appearance: none;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--paper-hi);
  border: 2px solid var(--ink);
  border-radius: 9px;
  padding: 8px 14px;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.btn:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); }
.btn:active { transform: translate(2px, 2px); box-shadow: 0 0 0 var(--ink); }
.btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-deep); }
.btn-primary .arr { display: inline-block; transition: transform 0.15s ease; }
.btn-primary:hover .arr { transform: translate(2px, -2px); }

.btn-quiet { background: transparent; box-shadow: 3px 3px 0 rgba(32, 41, 58, 0.35); }

/* ---- download dropdown ------------------------------------------ */
.dl-wrap { position: relative; }

.caret { display: inline-block; margin-left: 2px; }

.dl-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 50;
  min-width: 270px;
  background: var(--paper-hi);
  border: 2px solid var(--ink);
  border-radius: 10px;
  box-shadow: 5px 5px 0 var(--ink);
  padding: 6px;
  animation: drop 0.18s cubic-bezier(0.22, 1, 0.36, 1);
}

.dl-item {
  appearance: none;
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 2px solid transparent;
  border-radius: 7px;
  padding: 9px 11px;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
}

.dl-item:hover { background: var(--paper-lo); border-color: var(--ink); }
.dl-item:focus-visible { outline: 3px solid var(--accent); outline-offset: 1px; }
.dl-item + .dl-item { margin-top: 4px; }

.dl-item-name {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}

.dl-item-name::before { content: "⤓ "; color: var(--accent); }

.dl-item-desc {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-soft);
}

/* ------------------------------------------------------------------
   Workbench layout
   ------------------------------------------------------------------ */
.bench {
  flex: 1;
  display: flex;
  min-height: 0;
  padding: 16px 20px 10px;
  gap: 0;
}

.panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--paper-hi);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 7px 7px 0 rgba(32, 41, 58, 0.16);
}

.editors-panel {
  flex: 0 0 50%;
  animation: rise 0.55s cubic-bezier(0.22, 1, 0.36, 1) 0.05s backwards;
}

.preview-panel {
  flex: 1;
  animation: rise 0.55s cubic-bezier(0.22, 1, 0.36, 1) 0.12s backwards;
}

.divider {
  flex: 0 0 14px;
  cursor: col-resize;
  position: relative;
}

.divider::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 44px;
  transform: translate(-50%, -50%);
  border-left: 2px dotted var(--ink-soft);
  opacity: 0.6;
  transition: opacity 0.15s ease, border-color 0.15s ease;
}

.divider:hover::after { opacity: 1; border-color: var(--accent); }

/* ------------------------------------------------------------------
   Editor tabs
   ------------------------------------------------------------------ */
.tabs {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  border-bottom: 2px solid var(--ink);
  background: var(--paper-lo);
}

.tab {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  border: 2px solid transparent;
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.tab:hover { border-color: var(--ink); }
.tab.active { background: var(--ink); color: var(--paper-hi); border-color: var(--ink); }
.tab:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  box-shadow: 0 0 0 1.5px rgba(255, 255, 255, 0.25) inset;
}
.dot-html { background: var(--c-html); }
.dot-css { background: var(--c-css); }
.dot-js { background: var(--c-js); }

.tabs-hint {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

/* ------------------------------------------------------------------
   Editors
   ------------------------------------------------------------------ */
.editor-stack {
  position: relative;
  flex: 1;
  min-height: 0;
  background: var(--code-bg);
}

.editor-host {
  position: absolute;
  inset: 0;
  visibility: hidden;
}
.editor-host.active { visibility: visible; }

.CodeMirror {
  height: 100%;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.65;
}

/* ---- "inkwell" CodeMirror theme -------------------------------- */
.cm-s-inkwell.CodeMirror { background: var(--code-bg); color: var(--code-fg); }
.cm-s-inkwell .CodeMirror-gutters {
  background: var(--code-gutter);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}
.cm-s-inkwell .CodeMirror-linenumber { color: #4c586e; padding: 0 8px 0 12px; }
.cm-s-inkwell .CodeMirror-cursor { border-left: 2px solid var(--accent); }
.cm-s-inkwell .CodeMirror-selected { background: rgba(47, 111, 228, 0.28); }
.cm-s-inkwell .CodeMirror-line::selection,
.cm-s-inkwell .CodeMirror-line > span::selection,
.cm-s-inkwell .CodeMirror-line > span > span::selection { background: rgba(47, 111, 228, 0.28); }
.cm-s-inkwell .CodeMirror-activeline-background { background: rgba(255, 255, 255, 0.045); }
.cm-s-inkwell .CodeMirror-matchingbracket {
  color: #fff !important;
  outline: 1px solid rgba(241, 85, 15, 0.7);
  border-radius: 2px;
}

.cm-s-inkwell .cm-comment { color: #66788f; font-style: italic; }
.cm-s-inkwell .cm-keyword { color: #ff8f52; }
.cm-s-inkwell .cm-atom { color: #ffc36b; }
.cm-s-inkwell .cm-number { color: #ffc36b; }
.cm-s-inkwell .cm-def { color: #8fd0ff; }
.cm-s-inkwell .cm-variable { color: var(--code-fg); }
.cm-s-inkwell .cm-variable-2 { color: #a8d3ff; }
.cm-s-inkwell .cm-variable-3, .cm-s-inkwell .cm-type { color: #7fd8c8; }
.cm-s-inkwell .cm-property { color: #8fd0ff; }
.cm-s-inkwell .cm-operator { color: #d3d8e4; }
.cm-s-inkwell .cm-string { color: #f5c84c; }
.cm-s-inkwell .cm-string-2 { color: #f5c84c; }
.cm-s-inkwell .cm-meta { color: #a3adc2; }
.cm-s-inkwell .cm-qualifier { color: #7fd8c8; }
.cm-s-inkwell .cm-builtin { color: #7fd8c8; }
.cm-s-inkwell .cm-tag { color: #ff8f52; }
.cm-s-inkwell .cm-bracket { color: #97a1b5; }
.cm-s-inkwell .cm-attribute { color: #8fd0ff; }
.cm-s-inkwell .cm-error { color: #ff7a7a; }

/* ------------------------------------------------------------------
   Preview panel
   ------------------------------------------------------------------ */
.browser-chrome {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border-bottom: 2px solid var(--ink);
  background: var(--paper-lo);
}

.chrome-dots { display: inline-flex; gap: 5px; }
.chrome-dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1.5px solid var(--ink);
  background: var(--paper-hi);
}
.chrome-dots i:nth-child(1) { background: var(--c-html); }
.chrome-dots i:nth-child(2) { background: var(--c-js); }
.chrome-dots i:nth-child(3) { background: var(--green); }

.address-pill {
  flex: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  background: var(--paper-hi);
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  padding: 5px 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.live-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: breathe 2.4s ease-in-out infinite;
}

.chrome-btn {
  appearance: none;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1;
  color: var(--ink);
  background: var(--paper-hi);
  border: 2px solid var(--ink);
  border-radius: 8px;
  width: 30px;
  height: 30px;
  cursor: pointer;
  box-shadow: 2px 2px 0 var(--ink);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.chrome-btn:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--ink); }
.chrome-btn:active { transform: translate(1px, 1px); box-shadow: 0 0 0 var(--ink); }

.frame-wrap {
  flex: 1;
  position: relative;
  min-height: 0;
  background:
    repeating-conic-gradient(#f6f6f6 0% 25%, #ffffff 0% 50%) 0 0 / 20px 20px;
}

#preview {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: #fff;
}

/* ------------------------------------------------------------------
   Console drawer
   ------------------------------------------------------------------ */
.console {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  border-top: 2px solid var(--ink);
  background: var(--code-bg);
  color: var(--code-fg);
}

.console-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px 0 4px;
}

.console-toggle {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--code-fg);
  background: transparent;
  border: 0;
  padding: 9px 10px;
  cursor: pointer;
}

.console-chev { display: inline-block; transition: transform 0.2s ease; color: var(--accent); }
.console.open .console-chev { transform: rotate(90deg); }

.console-badge {
  font-size: 10px;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 1px 7px;
}

.console-clear {
  appearance: none;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #8b95a9;
  background: transparent;
  border: 1px solid #3a4458;
  border-radius: 6px;
  padding: 3px 9px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.console-clear:hover { color: var(--code-fg); border-color: #8b95a9; }

.console-body {
  display: none;
  height: 148px;
  overflow-y: auto;
  padding: 4px 12px 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
}
.console.open .console-body { display: block; }

.console-empty { margin: 6px 0; color: #66788f; font-style: italic; }

#console-list { list-style: none; margin: 0; padding: 0; }

.console-entry {
  padding: 3px 0 3px 18px;
  position: relative;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  white-space: pre-wrap;
  word-break: break-word;
}
.console-entry::before {
  content: "›";
  position: absolute;
  left: 2px;
  color: #4c586e;
}
.console-entry.is-warn { color: #f5c84c; }
.console-entry.is-warn::before { content: "⚠"; color: #f5c84c; }
.console-entry.is-error { color: #ff8f8f; }
.console-entry.is-error::before { content: "✖"; color: #ff6b6b; }

/* ------------------------------------------------------------------
   Status bar
   ------------------------------------------------------------------ */
.statusbar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 22px 8px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.save-state { color: var(--green); transition: color 0.2s ease; }
.save-state.busy { color: var(--c-js); }

.status-hints { text-align: right; }

/* ------------------------------------------------------------------
   Motion
   ------------------------------------------------------------------ */
@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes drop {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes breathe {
  0%, 100% { box-shadow: 0 0 0 0 rgba(47, 191, 113, 0.55); }
  50% { box-shadow: 0 0 0 5px rgba(47, 191, 113, 0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ------------------------------------------------------------------
   Small screens — stack vertically
   ------------------------------------------------------------------ */
@media (max-width: 900px) {
  .bench { flex-direction: column; padding: 12px; }
  .divider { display: none; }
  .editors-panel { flex: 0 0 46%; }
  .preview-panel { flex: 1; margin-top: 12px; }
  .brand-sub { display: none; }
  .statusbar { flex-direction: column; align-items: flex-start; gap: 2px; }
  .status-hints { display: none; }
}