:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1c2128;
  --line: #30363d;
  --text: #c9d1d9;
  --muted: #8b949e;
  --up: #26a69a;
  --down: #ef5350;
  --accent: #58a6ff;
  --panel-width: 300px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 13px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
}

body {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  height: 100vh;
  height: 100dvh;
}

/* ---------- Top bar ---------- */
#topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.brand {
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.3px;
}

.controls {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.controls label {
  display: flex;
  gap: 6px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.controls select,
.controls input,
.controls button {
  background: #0d1117;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 12px;
  font-family: inherit;
}

.controls button {
  cursor: pointer;
  min-width: 56px;
}

.controls button:hover:not(:disabled) { border-color: var(--accent); }
.controls button:disabled { opacity: 0.5; cursor: not-allowed; }

.status {
  margin-left: auto;
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.badge {
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0d1117;
  font-size: 11px;
  white-space: nowrap;
}

/* ---------- Workspace (chart + side panel) ---------- */
#workspace {
  display: grid;
  grid-template-columns: 42px 1fr var(--panel-width);
  min-height: 0;
  height: 100%;
}

/* ---------- Drawing toolbar (left rail) ---------- */
#draw-tools {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 4px;
  background: var(--panel);
  border-right: 1px solid var(--line);
}
#draw-tools .dt-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text);
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  font-family: inherit;
  line-height: 1;
}
#draw-tools .dt-btn:hover { background: var(--panel-2); border-color: var(--line); }
#draw-tools .dt-btn.active { background: rgba(88, 166, 255, 0.18); border-color: var(--accent); color: var(--accent); }
#draw-tools .dt-clear { color: var(--down); margin-top: 6px; font-size: 13px; }
#draw-tools .dt-spacer { flex: 1; }

/* When a drawing tool is active, hint at the cursor via the chart wrapper */
#chart.drawing-active { cursor: crosshair; }

#chart {
  position: relative;
  width: 100%;
  min-width: 0;
  min-height: 0;
  border-right: 1px solid var(--line);
}

#trade-panel {
  overflow-y: auto;
  background: var(--panel);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.panel-section {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
}

.panel-section h3 {
  margin: 0 0 8px 0;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--muted);
}

.row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 0;
  font-variant-numeric: tabular-nums;
}
.row .k { color: var(--muted); font-size: 12px; }
.row .v { font-size: 13px; font-weight: 500; }
.row .v.muted { color: var(--muted); font-weight: 400; }

/* Tiny inline link-styled button — used for the "log out" affordance next
   to the trader name in the Account panel. */
.link-btn {
  background: none;
  border: 0;
  color: var(--muted);
  font: inherit;
  font-size: 11px;
  cursor: pointer;
  text-decoration: underline;
  padding: 0 0 0 6px;
}
.link-btn:hover { color: var(--down); }

.trade-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.trade-form label {
  display: flex;
  flex-direction: column;
  font-size: 11px;
  color: var(--muted);
  gap: 3px;
}
.trade-form input {
  background: #0d1117;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 12px;
  font-family: inherit;
}

.trade-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 4px;
}
.trade-buttons button {
  cursor: pointer;
  padding: 8px;
  border-radius: 4px;
  border: 1px solid;
  font-weight: 600;
  font-size: 12px;
  font-family: inherit;
  background: #0d1117;
  color: var(--text);
}
.trade-buttons .long  { border-color: var(--up);   color: var(--up); }
.trade-buttons .short { border-color: var(--down); color: var(--down); }
.trade-buttons button:disabled { opacity: 0.4; cursor: not-allowed; }

.hint { color: var(--muted); font-size: 11px; margin: 6px 0 0; font-style: italic; }
.empty { color: var(--muted); font-size: 12px; margin: 0; }

/* ---------- Footer ---------- */
#statusline {
  display: flex;
  gap: 16px;
  padding: 6px 12px;
  background: var(--panel);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

#log {
  margin-left: auto;
  color: var(--accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 50%;
}

/* ---------- Simulation button + banner ---------- */
.sim-button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 4px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.sim-button:hover { filter: brightness(1.1); }
.sim-button.danger {
  background: transparent;
  color: var(--down);
  border: 1px solid var(--down);
}
.sim-button.danger:hover { background: rgba(239, 83, 80, 0.1); }

/* Non-host accounts can't start/restart/end sims or drive playback — keep the
   host's controls completely out of their UI. We hide via display:none so the
   topbar gap collapses cleanly. Triggers on any [data-host-only] element. */
body.not-host [data-host-only] { display: none !important; }

#sim-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 12px;
  background: linear-gradient(90deg, rgba(88, 166, 255, 0.15), rgba(88, 166, 255, 0.04));
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--text);
}
#sim-banner[hidden] { display: none; }
#sim-banner .sim-tag {
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0.6px;
}
#sim-banner .sep { color: var(--muted); }
#sim-banner span { white-space: nowrap; }

/* ---------- Simulation modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal[hidden] { display: none; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
}

.modal-body {
  position: relative;
  z-index: 1;
  width: min(900px, 92vw);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.modal-head h2 { margin: 0; font-size: 16px; font-weight: 600; }
.modal-close {
  background: transparent;
  color: var(--muted);
  border: 0;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}
.modal-close:hover { color: var(--text); }

.modal-sub {
  margin: 12px 18px 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
  padding: 14px 18px;
  overflow-y: auto;
}

.level-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px;
  background: var(--panel-2);
  cursor: pointer;
  transition: border-color 0.1s, background 0.1s;
  position: relative;
}
.level-card:hover { border-color: var(--accent); }
.level-card.selected {
  border-color: var(--accent);
  background: rgba(88, 166, 255, 0.08);
}
.level-card .lc-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
}
.level-card .lc-num {
  color: var(--accent);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 1px;
}
.level-card .lc-name { font-weight: 600; font-size: 14px; }
.level-card .lc-blurb {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.4;
  margin: 6px 0 8px;
}
.level-card .lc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  font-size: 10px;
}
.level-card .lc-meta span {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 2px 6px;
  color: var(--muted);
}
.level-card .lc-meta .dir-long  { color: var(--up); border-color: var(--up); }
.level-card .lc-meta .dir-short { color: var(--down); border-color: var(--down); }
.level-card .lc-meta .offset    { color: var(--accent); border-color: var(--accent); }
.level-card .lc-goal {
  margin-top: 6px;
  color: var(--muted);
  font-size: 10px;
  font-style: italic;
}

/* Custom sim card — distinct from preset cards. */
.level-card.custom {
  border-style: dashed;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
}
.level-card.custom .lc-name { font-size: 14px; }
.level-card.custom .lc-blurb { font-size: 11px; }

/* Custom form view inside the sim modal. */
.custom-form {
  padding: 12px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
}
.custom-form .custom-back {
  align-self: flex-start;
  background: transparent;
  color: var(--accent);
  border: 0;
  padding: 4px 0;
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
}
.custom-form .cf-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.custom-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--muted);
  font-size: 12px;
}
.custom-form .cf-check {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}
.custom-form input[type="number"],
.custom-form input[type="date"],
.custom-form select {
  background: #0d1117;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 13px;
  font-family: inherit;
}
.custom-form .cf-tfs {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 8px 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.custom-form .cf-tfs legend {
  color: var(--muted);
  font-size: 11px;
  padding: 0 4px;
}
.custom-form .cf-tfs label {
  flex-direction: row;
  color: var(--text);
  font-size: 12px;
  gap: 4px;
}

.modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
}
.modal-foot button {
  background: #0d1117;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 6px 14px;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
}
.modal-foot button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}
.modal-foot button:disabled { opacity: 0.5; cursor: not-allowed; }

/* TF dropdown — disabled options show muted */
#tf option:disabled { color: var(--muted); }

/* Reset button — surfaces only when equity has tanked below the floor. */
.reset-btn {
  width: 100%;
  margin-top: 10px;
  padding: 8px;
  background: var(--down);
  color: #fff;
  border: 0;
  border-radius: 4px;
  font-weight: 600;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
}
.reset-btn:hover { filter: brightness(1.1); }

/* ---------- Login modal ---------- */
.login-row { padding: 12px 18px; }
.login-row input {
  width: 100%;
  background: #0d1117;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px 12px;
  font-size: 14px;
  font-family: inherit;
}
.login-error {
  color: var(--down);
  font-size: 12px;
  padding: 0 18px 8px;
}
.login-error[hidden] { display: none; }

/* ---------- Trade form: leverage slider + calc box ---------- */
.lev-row { gap: 4px; }
.lev-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  color: var(--muted);
  font-size: 11px;
}
.lev-label strong {
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
}
#t-lev {
  width: 100%;
  appearance: none;
  background: transparent;
  height: 18px;
  margin: 0;
}
#t-lev::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--line);
  border-radius: 2px;
}
#t-lev::-webkit-slider-thumb {
  appearance: none;
  width: 14px;
  height: 14px;
  margin-top: -5px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}
#t-lev::-moz-range-track {
  height: 4px;
  background: var(--line);
  border-radius: 2px;
}
#t-lev::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 0;
  cursor: pointer;
}

.trade-calc {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 6px 8px;
  margin-top: 2px;
}
.trade-calc .row { padding: 1px 0; font-size: 11px; }
.trade-calc .k { font-size: 10px; }

#trade-hint {
  margin-top: 6px;
}
#trade-hint.error { color: var(--down); font-style: normal; }

/* ---------- Position cards ---------- */
.pos-card {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 8px;
  background: var(--bg);
  margin-bottom: 6px;
  font-size: 11px;
}
.pos-card:last-child { margin-bottom: 0; }

.pos-card .pos-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.pos-card .side {
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 10px;
  letter-spacing: 0.6px;
}
.pos-card .side.long  { background: rgba(38, 166, 154, 0.18); color: var(--up); }
.pos-card .side.short { background: rgba(239, 83, 80, 0.18); color: var(--down); }

.pos-card .pnl { font-weight: 600; font-size: 12px; font-variant-numeric: tabular-nums; }
.pos-card .pnl.pos { color: var(--up); }
.pos-card .pnl.neg { color: var(--down); }

.pos-card .pos-stats {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1px 8px;
  font-variant-numeric: tabular-nums;
}
.pos-card .pos-stats .k { color: var(--muted); font-size: 10px; }
.pos-card .pos-stats .v { font-size: 11px; }

.pos-card .pos-actions {
  margin-top: 6px;
  text-align: right;
}
.pos-card .pos-actions button {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 3px 8px;
  font-size: 11px;
  font-family: inherit;
  cursor: pointer;
}
.pos-card .pos-actions button:hover { color: var(--text); border-color: var(--accent); }

.hist-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 6px;
  padding: 4px 0;
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  align-items: center;
}
.hist-row:last-child { border-bottom: 0; }
.hist-row .side-mini {
  font-weight: 700;
  font-size: 9px;
  padding: 1px 4px;
  border-radius: 2px;
  letter-spacing: 0.6px;
}
.hist-row .side-mini.long  { background: rgba(38, 166, 154, 0.18); color: var(--up); }
.hist-row .side-mini.short { background: rgba(239, 83, 80, 0.18); color: var(--down); }
.hist-row .meta { color: var(--muted); font-size: 10px; }
.hist-row .pnl.pos { color: var(--up); }
.hist-row .pnl.neg { color: var(--down); }

.hist-row .hist-note {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 10px;
  font-style: italic;
  padding-top: 2px;
  cursor: pointer;
  word-break: break-word;
}
.hist-row .hist-note:hover { color: var(--text); }
.hist-row .hist-note.placeholder { font-style: normal; opacity: 0.5; }

.hist-filters {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.hist-chip {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 2px 8px;
  font-size: 10px;
  font-family: inherit;
  cursor: pointer;
}
.hist-chip:hover { color: var(--text); }
.hist-chip.active {
  background: rgba(88, 166, 255, 0.18);
  border-color: var(--accent);
  color: var(--accent);
}

.row .v.up   { color: var(--up); }
.row .v.down { color: var(--down); }

/* ---------- Right-click context menu ---------- */
.ctx-menu {
  position: fixed;
  z-index: 1000;
  min-width: 220px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 4px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  font-size: 12px;
  color: var(--text);
  user-select: none;
}
.ctx-menu[hidden] { display: none; }

.ctx-menu hr {
  margin: 4px 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.ctx-menu .ctx-item {
  display: block;
  width: 100%;
  background: transparent;
  border: 0;
  text-align: left;
  padding: 6px 10px;
  border-radius: 4px;
  color: var(--text);
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
}
.ctx-menu .ctx-item:hover { background: var(--panel-2); }

.ctx-menu .ctx-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.ctx-menu .ctx-row input[type="color"] {
  width: 32px;
  height: 22px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #0d1117;
  cursor: pointer;
}
.ctx-menu .ctx-row input[type="checkbox"] {
  width: 14px; height: 14px;
  accent-color: var(--accent);
  cursor: pointer;
}
.ctx-menu .ctx-reset { color: var(--muted); font-style: italic; }

.ctx-menu .dctx-delete { color: var(--down); }
#drawing-ctx { min-width: 160px; }

.ctx-menu .ctx-ev2-cfg { color: var(--accent); font-size: 11px; }

/* EV2 settings form */
.ev2-form {
  padding: 10px 18px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ev2-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--muted);
  font-size: 12px;
}
.ev2-form input {
  background: #0d1117;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 13px;
  font-family: inherit;
}
.ev2-form .hint {
  color: var(--muted);
  font-size: 11px;
  font-style: italic;
}
.ev2-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 8px 0;
  border-top: 1px solid var(--line);
  margin-top: 4px;
}
@media (max-width: 560px) {
  .ev2-tiers { grid-template-columns: 1fr; }
}

/* ---------- Mobile / narrow screens ---------- */
@media (max-width: 820px) {
  /* On mobile we let the PAGE scroll. The chart still gets a tall fixed
     section, but the trade panel sits below it and you scroll down to reach
     it instead of horizontal-scrolling a cramped strip. */
  html, body { overflow: auto; }
  body {
    height: auto;
    min-height: 100dvh;
    grid-template-rows: auto auto auto auto;
  }

  body { font-size: 12px; }

  #topbar { gap: 6px; padding: 6px 8px; row-gap: 6px; }
  .brand  { font-size: 13px; width: 100%; }
  .status { width: 100%; margin-left: 0; order: 99; gap: 6px; font-size: 11px; }
  .status #range { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 55vw; }

  /* Tighter controls: shorter min-width, smaller padding, drop label text on
     constrained items but keep the input/select visible. */
  .controls { gap: 4px; }
  .controls label { font-size: 11px; gap: 3px; }
  .controls select,
  .controls input,
  .controls button {
    padding: 5px 7px;
    font-size: 11px;
  }
  .controls button { min-width: 0; }
  /* The Speed/TF/Goto labels eat a lot of width; collapse them. */
  .controls label:has(#tf),
  .controls label:has(#speed),
  .controls label:has(#goto) {
    gap: 0;
  }
  .controls label:has(#tf) > :not(select),
  .controls label:has(#speed) > :not(select) { display: none; }
  /* Goto: keep the icon implicit, hide the word "Go to". */
  .controls label:has(#goto) > :not(input) { display: none; }

  .sim-button { padding: 5px 9px; font-size: 11px; }

  #sim-banner { flex-wrap: wrap; gap: 6px 10px; padding: 6px 10px; font-size: 11px; }

  #workspace {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    height: auto;
  }

  /* Drawing toolbar becomes a horizontal strip above the chart on mobile. */
  #draw-tools {
    flex-direction: row;
    width: 100%;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 4px 6px;
    overflow-x: auto;
  }
  #draw-tools .dt-spacer { display: none; }
  #draw-tools .dt-clear { margin-top: 0; margin-left: auto; }

  #chart {
    height: 70dvh;          /* explicit tall block so the chart has real estate */
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  #trade-panel {
    max-height: none;        /* let it grow with content */
    flex-direction: column;  /* sections stack vertically */
    overflow: visible;
    padding: 10px;
    gap: 10px;
  }
  .panel-section { min-width: 0; }

  /* Modal — fit the level cards comfortably on narrow screens. */
  .level-grid { grid-template-columns: 1fr; padding: 10px 12px; }
  .modal-head { padding: 10px 12px; }
  .modal-sub  { margin: 8px 12px 0; }
  .modal-foot { padding: 10px 12px; }
}

@media (max-width: 480px) {
  #topbar { padding: 5px 6px; }
  .controls button,
  .controls select { padding: 5px 6px; }
  /* Hide non-critical buttons in the top bar — Settings is still reachable
     via the gear button. Step is reachable via spacebar (desktop) or this
     button (mobile keeps it). */
  #fit, #reset-scale, #jump-end, #jump-start { display: none; }
}