/* ══════════════════════════════════════════════════════════════════════
   pro.css ─ Professional UX layer:
     • Header buttons (.hbtn) for Snippets / Share / Help / mobile menu
     • Snippets dropdown menu
     • Modal system (Help / Save / Share)
     • Toast notifications (success / warn / error)
     • Auto-save status indicator
     • Mobile responsive layout (≤880px) — stacks panels, drawer menu
     • Print-friendly overrides
   ══════════════════════════════════════════════════════════════════════ */

/* ── Header pro buttons ──────────────────────────────────────────── */
.hbtn {
  background: rgba(0, 201, 167, 0.12);
  border: 1.5px solid var(--accent);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 6px 12px;
  cursor: pointer;
  border-radius: 4px;
  transition: all .15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: inset 0 0 8px rgba(0, 201, 167, 0.15);
}
.hbtn:hover  {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 0 12px rgba(0, 201, 167, 0.4);
}
.hbtn:active { transform: translateY(1px); }
.hbtn .kbd   { font-size: 9px; opacity: .55; padding: 1px 4px; border: 1px solid currentColor; border-radius: 2px; }

/* ── Snippets dropdown menu ──────────────────────────────────────── */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
  /* Fixed positioning so the menu escapes the header's overflow-x:auto
     clipping context. JS sets top/right when toggling the menu open. */
  position: fixed;
  background: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
  min-width: 280px; max-width: 360px;
  max-height: 420px; overflow-y: auto;
  z-index: 1000; padding: 6px;
  display: none;
}
.dropdown-menu.show { display: block; }
.dropdown-menu .dh {
  font-family: var(--mono); font-size: 9px; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--gray); padding: 8px 10px 4px; border-bottom: 1px solid var(--ink);
  margin-bottom: 4px;
}
.snip-item {
  padding: 8px 10px; cursor: pointer; border-radius: 4px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px; transition: background .12s;
}
.snip-item:hover { background: var(--cream); }
.snip-item .snip-name { font-family: var(--mono); font-size: 12px; font-weight: 600; color: var(--ink); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.snip-item .snip-meta { font-family: var(--mono); font-size: 9px; color: var(--gray); }
.snip-item .snip-del  { background: none; border: none; color: var(--gray); cursor: pointer; font-size: 14px; padding: 2px 6px; border-radius: 3px; }
.snip-item .snip-del:hover { background: var(--red); color: white; }
.snip-empty { padding: 16px; text-align: center; color: var(--gray); font-family: var(--mono); font-size: 11px; }

.dropdown-actions {
  border-top: 1px solid var(--ink); margin-top: 4px; padding-top: 6px;
  display: flex; gap: 4px; padding: 6px;
}
.dropdown-actions button {
  flex: 1; background: var(--cream); border: 1px solid var(--ink);
  color: var(--ink); font-family: var(--mono); font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .06em; padding: 6px 8px;
  cursor: pointer; border-radius: 3px; transition: all .12s;
}
.dropdown-actions button:hover { background: var(--ink); color: var(--white); }

/* ── Modal system (Help / Save / Share) ──────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.55);
  z-index: 9000; display: none; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.modal-backdrop.show { display: flex; }
.modal {
  background: var(--white); border: 2px solid var(--ink);
  border-radius: 12px; max-width: 720px; width: 90vw; max-height: 85vh;
  overflow-y: auto; box-shadow: 0 24px 80px rgba(0,0,0,.4);
  animation: modalIn .2s ease-out;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(12px) scale(.98);} to { opacity: 1; transform: none;} }
.modal-head {
  padding: 18px 24px; border-bottom: 1.5px solid var(--ink);
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; background: var(--white);
}
.modal-title { font-family: var(--mono); font-size: 14px; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; color: var(--ink); }
.modal-close {
  background: none; border: 1.5px solid var(--ink); color: var(--ink);
  width: 28px; height: 28px; border-radius: 4px; cursor: pointer;
  font-size: 16px; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
}
.modal-close:hover { background: var(--ink); color: var(--white); }
.modal-body { padding: 20px 24px; }
.modal-body h4 {
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase; color: var(--accent);
  margin: 18px 0 8px;
}
.modal-body h4:first-child { margin-top: 0; }
.modal-body p  { font-family: var(--ui); font-size: 13px; color: var(--ink); line-height: 1.55; margin: 4px 0 8px; }
.modal-body ul { margin: 4px 0 12px; padding-left: 18px; }
.modal-body li { font-family: var(--ui); font-size: 13px; color: var(--ink); line-height: 1.6; margin: 3px 0; }
.modal-body code {
  font-family: var(--mono); font-size: 11.5px;
  background: var(--cream); padding: 1px 5px; border-radius: 3px; border: 1px solid var(--ink);
}

/* Keyboard shortcut grid (Help modal) */
.kbd-grid { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; align-items: center; }
.kbd-grid .kc   { display: inline-flex; gap: 4px; align-items: center; }
.kbd-grid .key {
  font-family: var(--mono); font-size: 10.5px; font-weight: 700;
  background: var(--cream); border: 1.5px solid var(--ink); border-bottom-width: 2px;
  border-radius: 4px; padding: 3px 7px; min-width: 22px; text-align: center;
  color: var(--ink); white-space: nowrap;
}
.kbd-grid .desc { font-family: var(--ui); font-size: 12.5px; color: var(--ink); }

/* Save / Share modal — name input row */
.input-row { display: flex; gap: 8px; margin-top: 8px; }
.input-row input {
  flex: 1; font-family: var(--mono); font-size: 13px;
  background: var(--cream); border: 1.5px solid var(--ink); border-radius: 4px;
  padding: 10px 12px; color: var(--ink); outline: none;
}
.input-row input:focus { border-color: var(--accent); }
.input-row button {
  background: var(--accent); border: 1.5px solid var(--ink); color: var(--white);
  font-family: var(--mono); font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; padding: 10px 16px; cursor: pointer; border-radius: 4px;
}
.input-row button:hover { filter: brightness(.92); }

/* ── Toast notifications ─────────────────────────────────────────── */
#toast-container {
  position: fixed; bottom: 80px; right: 20px; z-index: 9500;
  display: flex; flex-direction: column; gap: 8px; pointer-events: none;
}
.toast {
  background: var(--ink); color: var(--white);
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  padding: 10px 16px; border-radius: 6px; min-width: 220px; max-width: 360px;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
  animation: toastIn .25s ease-out; pointer-events: auto;
  border-left: 3px solid var(--accent);
  display: flex; align-items: center; gap: 8px;
}
.toast.success { border-left-color: var(--accent); }
.toast.warn    { border-left-color: #f59e0b; }
.toast.error   { border-left-color: var(--red); }
.toast.fade    { animation: toastOut .25s ease-in forwards; }
@keyframes toastIn  { from { opacity: 0; transform: translateX(20px);} to { opacity: 1; transform: none;} }
@keyframes toastOut { to { opacity: 0; transform: translateX(20px);} }

/* ── Auto-save status indicator (header dot + label) ─────────────── */
.save-status {
  font-family: var(--mono); font-size: 9px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--gray); padding: 4px 8px; border-radius: 3px;
  display: inline-flex; align-items: center; gap: 6px;
  transition: all .25s;
}
.save-status::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--gray); transition: background .25s;
}
.save-status.saved::before  { background: var(--accent); }
.save-status.saving::before { background: #f59e0b; animation: pulse 1s infinite; }

/* ── Mobile: hamburger button + slide-out drawer ─────────────────── */
#mobile-menu-btn {
  display: none;
  background: rgba(0, 201, 167, 0.12);
  border: 1.5px solid var(--accent);
  color: var(--accent);
  width: 36px; height: 32px; border-radius: 4px; cursor: pointer;
  font-size: 18px; align-items: center; justify-content: center;
  transition: all .15s;
  box-shadow: inset 0 0 8px rgba(0, 201, 167, 0.15);
}
#mobile-menu-btn:hover {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 0 12px rgba(0, 201, 167, 0.4);
}

/* ── Tablet responsive (1000px–1200px) — buttons stay visible ──── */
@media (max-width: 1200px) and (min-width: 881px) {
  header { gap: 8px !important; padding: 0 10px !important; }
  .logo-name { font-size: 12px; letter-spacing: 2px; }
  .hm { gap: 8px; }
  .hm label { display: none; }
  .hm select { font-size: 10px; min-width: 160px; padding: 4px 8px; }
  .hbtn { padding: 5px 9px; font-size: 9px; gap: 5px; }
  .hbtn .kbd { display: none; }
  .save-status { font-size: 8px; padding: 2px 5px; }
  #status { font-size: 9px; gap: 5px; padding: 2px 6px; }
}

/* ── Large screens optimization ─────────────────────────────────── */
@media (min-width: 1401px) {
  #tmpl { min-width: 240px; }
}

/* ── Mobile responsive (≤880px) ──────────────────────────────────── */
@media (max-width: 880px) {
  header {
    flex-wrap: wrap; gap: 6px !important; padding: 8px 12px !important;
    height: auto !important; min-height: 56px;
  }
  .logo-name { display: none; }
  .hm label { display: none; }
  .hm select { font-size: 11px; max-width: 160px; }
  #status { font-size: 10px; padding: 3px 8px; }
  .save-status { display: none; }
  #theme-picker { display: none; }
  #mobile-menu-btn { display: inline-flex; }
  .hbtn:not(.always-mobile) { display: none; }

  #main {
    grid-template-columns: 1fr !important;
    flex-direction: column !important;
  }
  .hres { display: none !important; }
  #left { width: 100% !important; max-width: none !important; height: 50vh; border-right: none; border-bottom: 1.5px solid var(--ink); }
  #right { min-width: 0 !important; height: 50vh; }
  .vres { display: block; }

  #bottom {
    flex-wrap: wrap; gap: 8px !important; padding: 8px !important; height: auto !important;
  }
  #pblock { flex: 1 1 100%; order: 99; }
  #sblock { font-size: 10px; }
  #sblock input { width: 80px; }

  .modal { width: 96vw; max-height: 90vh; }
  .modal-head { padding: 14px 16px; }
  .modal-body { padding: 14px 16px; }

  .dropdown-menu { right: auto; left: 0; min-width: 240px; max-width: 92vw; }

  #toast-container { bottom: 110px; right: 8px; left: 8px; align-items: stretch; }
  .toast { min-width: 0; }
}
@media (max-width: 520px) {
  .hm select { max-width: 130px; }
  .ch-info   { display: none; }
  .ch-head   { padding: 6px 10px !important; }
}

/* ── Mobile-only chrome: edit-code button + sticky line header ─────────
   Hidden everywhere by default; only revealed inside the mobile
   full-screen trace view (body.mobile-trace-view, ≤880px).
   ─────────────────────────────────────────────────────────────────── */
#edit-code-btn   { display: none; }
#mobile-line-head{ display: none; }

@media (max-width: 880px){
  /* Fix 1: bug FAB collided with playback controls — drop it on mobile.
     Bug reports live in the ☰ drawer instead (m-bug). */
  #bug-fab { display: none !important; }

  /* Fix 3: after RUN the trace takes the whole screen ─────────────────── */
  body.mobile-trace-view #left,
  body.mobile-trace-view .vres,
  body.mobile-trace-view .hres { display: none !important; }

  body.mobile-trace-view #right {
    height: auto !important;
    flex: 1 1 auto !important;
    min-height: 0;
  }

  /* "← Edit code" pill in the trace header */
  body.mobile-trace-view #edit-code-btn {
    display: inline-flex; align-items: center;
    margin-right: 10px; flex-shrink: 0;
    background: var(--accent); color: #000; border: none;
    padding: 5px 11px; cursor: pointer; border-radius: 5px;
    font-family: var(--mono); font-size: 10px; font-weight: 900;
    letter-spacing: 1px; text-transform: uppercase;
  }
  body.mobile-trace-view #edit-code-btn:active { opacity: .8; }

  /* Sticky source-line header — sits right above the scrolling viz so it
     stays visible. Tells you which line of code produced this state. */
  body.mobile-trace-view #mobile-line-head {
    display: flex; align-items: center; gap: 10px;
    flex-shrink: 0;
    background: #0d0d0d;
    border-bottom: 1.5px solid var(--ink);
    padding: 11px 14px;
    font-family: var(--mono);
  }
  #mobile-line-head .mlh-num {
    color: var(--accent); font-weight: 900; font-size: 11px;
    flex-shrink: 0;
  }
  #mobile-line-head .mlh-src {
    color: #ededed; font-size: 13px; font-weight: 700;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
}

/* Mobile drawer (hidden on desktop, shown via JS toggle) */
#mobile-drawer {
  display: none; position: fixed; top: 56px; right: 8px;
  background: var(--white); border: 1.5px solid var(--ink); border-radius: 8px;
  padding: 10px; flex-direction: column; gap: 6px; z-index: 999;
  box-shadow: 0 8px 24px rgba(0,0,0,.2); min-width: 200px;
}
#mobile-drawer.show { display: flex; }
#mobile-drawer .hbtn { width: 100%; justify-content: flex-start; display: inline-flex; }
#mobile-drawer #theme-picker { display: flex; gap: 6px; padding-top: 6px; border-top: 1px solid var(--ink); margin-top: 4px; }

/* ── Print-friendly: hide chrome, show only the trace + code ─────── */
@media print {
  header, #bottom, .vres, .hres, .modal-backdrop, #toast-container, #mobile-drawer, #bug-fab { display: none !important; }
  #main { flex-direction: column !important; }
  #left, #right { box-shadow: none !important; }
}

/* ── Floating bug-report button ─────────────────────────────────────── */
#bug-fab {
  position: fixed;
  bottom: 72px; right: 16px;
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; line-height: 1;
  background: var(--white);
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  box-shadow: var(--sh);
  cursor: pointer;
  z-index: 900;
  transition: transform .12s, box-shadow .12s, background .12s;
}
#bug-fab:hover { transform: translateY(-2px); box-shadow: var(--shL); background: var(--cream); }
#bug-fab:active { transform: translateY(0); }
@media (max-width: 880px){
  #bug-fab { bottom: 86px; right: 12px; width: 44px; height: 44px; }
}