/* ---------- shared graph host + tooltip ---------- */
.nx-host { position: relative; }
.nx-tip {
  position: absolute; top: 0; left: 0; z-index: 5; min-width: 160px; max-width: 260px;
  display: grid; gap: 3px; padding: 10px 12px;
  background: var(--tip-bg); border: 1px solid var(--border); border-radius: 10px;
  color: var(--text); font-size: 12px; line-height: 1.4;
  box-shadow: 0 16px 36px -18px var(--shadow); pointer-events: none;
  opacity: 0; transition: opacity var(--t-fast);
}
.nx-tip.show { opacity: 1; }
.nx-tip strong { font-size: 13px; font-weight: 700; }
.nx-tip-row { display: flex; align-items: center; gap: 6px; color: var(--muted); }
.nx-tip-row i { width: 8px; height: 8px; border-radius: 2px; flex: none; }
.nx-tip-count { color: var(--accent); font-weight: 600; margin-top: 2px; }

/* ---------- layout ---------- */
.ex {
  --cw: 0px; --pw: 0px;
  height: calc(100dvh - var(--header-h) - env(safe-area-inset-top, 0px) - var(--bottom-space, 0px));
  display: grid; grid-template-columns: var(--cw) minmax(0, 1fr) var(--pw);
  background: var(--bg); color: var(--text);
  transition: grid-template-columns var(--t-slow) var(--ease-in-out);
  overflow: hidden;
}
.ex.controls-open { --cw: 304px; }
.ex.panel-open { --pw: 388px; }
.ex:fullscreen { height: 100vh; }

/* ---------- controls ---------- */
.ex-controls { overflow: hidden; border-inline-end: 1px solid var(--border); background: var(--controls-bg); min-width: 0; }
.ex-controls-inner { width: 304px; height: 100%; overflow-y: auto; padding: 18px 18px calc(28px + env(safe-area-inset-bottom, 0px)); scrollbar-width: thin; scrollbar-color: var(--scroll) transparent; }

.ex-search { position: relative; margin-bottom: 20px; }
.ex-search input {
  width: 100%; height: 42px; padding: 0 38px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; color: var(--text); outline: none;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.ex-search input::placeholder { color: var(--faint); }
.ex-search input:focus { border-color: var(--secondary); box-shadow: 0 0 0 3px var(--accent-soft); }
.ex-search input::-webkit-search-cancel-button { display: none; }
.ex-search-ico { position: absolute; inset-inline-start: 12px; top: 12px; color: var(--muted); pointer-events: none; }
.ex-search kbd { position: absolute; inset-inline-end: 10px; top: 10px; font: 600 11px var(--font-en); color: var(--muted); border: 1px solid var(--border); border-radius: 6px; padding: 2px 7px; background: var(--surface); }
.ex-search input:focus ~ kbd { opacity: 0; }
.ex-results {
  position: absolute; z-index: 10; top: 48px; inset-inline: 0; margin: 0; padding: 6px; list-style: none;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 24px 48px -24px var(--shadow); max-height: 340px; overflow-y: auto;
}
.ex-results li { display: grid; grid-template-columns: 14px 1fr; column-gap: 10px; align-items: center; padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.ex-results li[aria-selected="true"], .ex-results li:hover { background: var(--accent-soft); }
.res-name { font-weight: 600; font-size: var(--fs-sm); }
.res-sp { grid-column: 2; font-size: 11px; color: var(--muted); }
.ex-noresult { color: var(--muted); font-size: var(--fs-sm); cursor: default !important; display: block !important; }

.ctl { padding: 16px 0; border-top: 1px solid var(--border); }
.ctl-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.ctl-head h3 { font-size: 12.5px; font-weight: 700; color: var(--muted); }
.ctl-actions { display: flex; gap: 2px; }
.ctl-actions button { background: none; border: 0; color: var(--muted); font-size: 11.5px; padding: 3px 7px; border-radius: 6px; }
.ctl-actions button:hover { color: var(--accent); background: var(--accent-soft); }

.chip-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.chip-list.wrap { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  width: 100%; display: grid; grid-template-columns: 14px 1fr auto; align-items: center; gap: 10px;
  padding: 6px 8px; border-radius: 8px; border: 0; background: transparent; color: var(--text);
  text-align: start; font-size: 13px; transition: background var(--t-fast), opacity var(--t-fast), color var(--t-fast);
}
.chip:hover { background: var(--hover); }
.chip:disabled { opacity: .3; cursor: default; }
.chip[aria-pressed="false"] { opacity: .45; }
.chip[aria-pressed="false"] .chip-dot { background: transparent; box-shadow: inset 0 0 0 1.5px var(--c); }
.chip-dot { width: 10px; height: 10px; border-radius: 3px; background: var(--c); transition: background var(--t-fast); }
.chip-line { width: 14px; height: 2px; border-radius: 2px; background: var(--c); }
.chip.is-personal .chip-line { height: 0; background: none; border-top: 2px dashed var(--c); }
.chip-n { font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.chip-sm { width: auto; display: inline-flex; gap: 6px; padding: 5px 10px; border: 1px solid var(--border); border-radius: 999px; font-size: 12px; background: var(--surface); }
.chip-sm[aria-pressed="true"] { border-color: var(--secondary); background: var(--accent-soft); }
.ex:not(.color-relation) #relChips .chip-line { background: var(--faint); }
.ex:not(.color-relation) #relChips .chip.is-personal .chip-line { background: none; border-color: var(--faint); }

.ctl-label { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.segmented { display: grid; grid-template-columns: 1fr 1fr; background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 3px; margin-bottom: 16px; }
.segmented button { border: 0; background: transparent; color: var(--muted); padding: 6px; border-radius: 7px; font-size: 12.5px; font-weight: 600; transition: background var(--t-fast), color var(--t-fast); }
.segmented button[aria-checked="true"] { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px var(--shadow); }
.range-row { display: grid; grid-template-columns: 1fr auto; gap: 8px 10px; font-size: 13px; margin-bottom: 16px; }
.range-row output { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.range-row input { grid-column: 1 / -1; width: 100%; accent-color: var(--secondary); }
.switch-row { display: flex; align-items: center; gap: 10px; font-size: 13px; cursor: pointer; }
.switch-row input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch { width: 32px; height: 18px; border-radius: 999px; background: var(--surface-3); border: 1px solid var(--border); position: relative; transition: background var(--t-fast); flex: none; }
.switch::after { content: ""; position: absolute; top: 2px; inset-inline-start: 2px; width: 12px; height: 12px; border-radius: 50%; background: var(--faint); transition: inset-inline-start var(--t-fast) var(--ease), background var(--t-fast); }
.switch-row input:checked + .switch { background: var(--accent-soft); border-color: var(--secondary); }
.switch-row input:checked + .switch::after { inset-inline-start: 16px; background: var(--accent); }
.switch-row input:focus-visible + .switch { outline: 2px solid var(--secondary); outline-offset: 2px; }

.scene-form { display: flex; gap: 6px; margin-bottom: 10px; }
.scene-form input { flex: 1; min-width: 0; height: 34px; padding: 0 10px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 13px; }
.scene-form input::placeholder { color: var(--faint); }
.btn-mini {
  display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 12px;
  border-radius: 9px; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font-size: 12.5px; font-weight: 600; white-space: nowrap; transition: border-color var(--t-fast), background var(--t-fast), color var(--t-fast);
}
.btn-mini:hover { border-color: var(--secondary); }
.btn-mini svg { width: 15px; height: 15px; flex: none; }
.btn-mini.primary { background: var(--primary); border-color: var(--primary); color: var(--on-primary); }
.btn-mini.primary:hover { background: var(--primary-hover); }
.btn-mini[aria-pressed="true"] { border-color: var(--secondary); background: var(--accent-soft); color: var(--accent); }
.scene-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.scene { display: flex; align-items: center; gap: 4px; }
.scene-open { flex: 1; min-width: 0; text-align: start; display: grid; padding: 7px 9px; border-radius: 8px; border: 0; background: transparent; color: var(--text); }
.scene-open:hover { background: var(--hover); }
.scene-name { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.scene-date { font-size: 11px; color: var(--muted); }
.scene-empty { font-size: 12.5px; color: var(--muted); line-height: 1.5; }

.icon-btn { width: 34px; height: 34px; display: inline-grid; place-items: center; border-radius: 9px; border: 0; background: transparent; color: var(--muted); flex: none; transition: background var(--t-fast), color var(--t-fast); }
.icon-btn:hover:not(:disabled) { background: var(--hover); color: var(--text); }
.icon-btn:disabled { opacity: .3; cursor: default; }
.icon-btn.sm { width: 28px; height: 28px; }
.icon-btn.sm svg { width: 15px; height: 15px; }
.icon-btn[aria-pressed="true"] { color: var(--accent); }
html[dir="rtl"] #pBack svg { transform: scaleX(-1); }

/* ---------- stage ---------- */
.ex-stage { position: relative; min-width: 0; overflow: hidden; background: radial-gradient(circle at 50% 52%, var(--stage-1) 0%, var(--stage-2) 62%); }
.ex-graph { position: absolute; inset: 60px 8px 30px; }
.ex-top { position: absolute; top: 12px; inset-inline: 16px; z-index: 3; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; pointer-events: none; }
.ex-top > * { pointer-events: auto; }
.lens-switch {
  position: relative; display: inline-flex; padding: 4px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border); box-shadow: 0 10px 24px -20px var(--shadow);
}
.lens-switch button { position: relative; z-index: 1; border: 0; background: transparent; color: var(--muted); font-size: 13px; font-weight: 700; padding: 7px 14px; border-radius: 9px; transition: color var(--t-med); white-space: nowrap; }
.lens-switch button:hover { color: var(--text); }
.lens-switch button[aria-checked="true"] { color: var(--on-primary); }
.lens-thumb { position: absolute; z-index: 0; top: 4px; bottom: 4px; left: 0; border-radius: 9px; background: var(--primary); transition: transform var(--t-slow) var(--ease), width var(--t-slow) var(--ease); }
.ex-status { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.ex-count { font-variant-numeric: tabular-nums; }
.ex-demo { color: var(--warn); background: var(--warn-soft); border-radius: 999px; padding: 2px 9px; font-weight: 700; font-size: 11.5px; }
.ex-valid summary { cursor: pointer; list-style: none; color: var(--danger); }
.ex-valid.ok summary { color: var(--muted); cursor: default; pointer-events: none; }
.ex-valid summary::-webkit-details-marker { display: none; }
.ex-valid ul { position: absolute; margin: 8px 0 0; padding: 10px 14px 10px 26px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; max-width: 420px; max-height: 260px; overflow: auto; font-size: 12px; }
.ex-valid li.error { color: var(--danger); }

.ex-hint {
  position: absolute; bottom: 72px; inset-inline: 16px; margin-inline: auto; width: fit-content; max-width: 92%;
  text-align: center; font-size: 12.5px; color: var(--muted); z-index: 2;
  transition: opacity var(--t-slow), transform var(--t-slow) var(--ease);
}
.ex-hint.gone { opacity: 0; transform: translateY(6px); pointer-events: none; }
.ex-empty { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 14px; color: var(--muted); text-align: center; z-index: 2; padding: 24px; pointer-events: none; }
.ex-empty > * { pointer-events: auto; }
.ex-empty[hidden] { display: none; }
.space-empty h2 { font-size: var(--fs-xl); color: var(--text); }
.space-empty p { max-width: 42ch; }
.space-empty-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }

.ex-toolbar {
  position: absolute; bottom: calc(14px + env(safe-area-inset-bottom, 0px)); left: 50%; transform: translateX(-50%); z-index: 4;
  display: flex; align-items: center; gap: 2px; padding: 5px;
  background: var(--tip-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border); border-radius: 14px; box-shadow: 0 18px 40px -26px var(--shadow);
}
.tb { height: 38px; min-width: 38px; display: inline-flex; align-items: center; justify-content: center; gap: 7px; padding: 0 9px; border: 0; border-radius: 10px; background: transparent; color: var(--text); font-size: 12.5px; font-weight: 600; transition: background var(--t-fast), color var(--t-fast); }
.tb:hover { background: var(--hover); }
.tb[aria-expanded="true"], .tb[aria-pressed="true"] { color: var(--accent); }
.tb-sep { width: 1px; height: 20px; background: var(--border); margin: 0 4px; }
.tb[hidden] { display: none; }

/* ---------- panel ---------- */
.ex-panel { overflow: hidden; background: var(--panel-bg); border-inline-start: 1px solid var(--border); min-width: 0; outline: none; }
.panel-inner { width: 388px; height: 100%; overflow-y: auto; padding: 12px 22px calc(32px + env(safe-area-inset-bottom, 0px)); scrollbar-width: thin; scrollbar-color: var(--scroll) transparent; animation: panelIn var(--t-slow) var(--ease); }
@keyframes panelIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.panel-bar { display: flex; align-items: center; gap: 6px; margin: 0 -8px 10px; }
.panel-bar-sp { flex: 1; display: inline-flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); font-weight: 600; justify-content: center; }
.panel-bar-sp i { width: 8px; height: 8px; border-radius: 2px; background: var(--c); }
.panel-head { padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.panel-cat { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; color: var(--c); font-weight: 700; margin-bottom: 8px; }
.panel-head h2 { font-size: 1.5rem; margin-bottom: 4px; }
.panel-alt { color: var(--muted); font-size: 14px; margin-bottom: 12px; }
.panel-alt:lang(en) { font-family: var(--font-en); }
.panel-alt:lang(ar) { font-family: var(--font-ar); }
.panel-desc { font-size: 14.5px; line-height: 1.7; }
.note-body { white-space: pre-wrap; padding: 12px 14px; background: var(--surface-2); border-radius: 12px; border: 1px solid var(--border); margin-top: 6px; }
.panel-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.save-btn[aria-pressed="true"] { color: var(--personal); border-color: color-mix(in srgb, var(--personal) 45%, transparent); background: color-mix(in srgb, var(--personal) 10%, transparent); }
.review { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; font-size: 12px; }
.review dt { color: var(--muted); margin-bottom: 3px; }
.review dd { margin: 0; }
.badge-demo { color: var(--warn); font-weight: 700; }

.panel-sec { padding: 18px 0 4px; }
.panel-sec > h3 { font-size: 13px; color: var(--muted); font-weight: 700; margin-bottom: 12px; display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.panel-sec .muted { font-weight: 500; font-size: 12px; }
.rel-group { margin-bottom: 14px; }
.rel-group h4 { display: flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 700; color: var(--c); margin-bottom: 4px; }
.rel-group h4 i { width: 16px; height: 2px; border-radius: 2px; background: var(--c); }
.rel-group h4 span { margin-inline-start: auto; color: var(--muted); font-weight: 500; font-variant-numeric: tabular-nums; }
.rel-group ul, .plain-list { list-style: none; margin: 0; padding: 0; }
.rel-go { width: 100%; display: grid; grid-template-columns: 10px 1fr auto; align-items: center; gap: 10px; padding: 7px 8px; border: 0; background: transparent; color: var(--text); text-align: start; border-radius: 9px; font-size: 13.5px; transition: background var(--t-fast); }
.rel-go:hover { background: var(--hover); }
.rel-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--sc); }
.rel-name { font-weight: 600; }
.rel-sp { font-size: 11px; color: var(--muted); }
.rel-meta { padding: 0 8px 8px; padding-inline-start: 28px; }
.rel-meta p { font-size: 12.5px; color: var(--muted); line-height: 1.55; }
.ev-chips { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 5px; }
.ev-chip { font-size: 11px; font-weight: 700; color: var(--evidence); border: 1px solid color-mix(in srgb, var(--evidence) 35%, transparent); border-radius: 999px; padding: 1px 8px; text-decoration: none; }
a.ev-chip:hover { background: color-mix(in srgb, var(--evidence) 10%, transparent); }
.cite { padding: 12px 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface-2); margin: 8px 0; }
.cite-title { font-weight: 700; font-size: 13.5px; line-height: 1.45; margin-bottom: 4px; direction: ltr; text-align: left; font-family: var(--font-en); }
.cite-src { font-size: 12px; color: var(--muted); direction: ltr; text-align: left; font-family: var(--font-en); }
.cite-meta { display: grid; gap: 2px; font-size: 11.5px; color: var(--muted); margin-top: 8px; }
.cite-meta span:last-child { color: var(--warn); }
.cite-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 8px; font-size: 12px; color: var(--accent); text-decoration: none; }
.cite-link svg { width: 14px; height: 14px; }
.panel-empty { font-size: 13px; color: var(--muted); }
.panel-disclaimer { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--border); font-size: 12px; color: var(--muted); line-height: 1.6; }

/* my space (personal) */
.my-space { margin-top: 4px; }
.my-space > h3 { color: var(--personal); }
.my-space-add { display: flex; gap: 6px; }
.my-space-add .btn-mini { height: 30px; padding: 0 10px; font-size: 12px; }
.panel-cat.personal { color: var(--personal); }
.pform { display: grid; gap: 8px; margin-bottom: 12px; padding: 12px; border-radius: 12px; background: var(--surface-2); border: 1px dashed color-mix(in srgb, var(--personal) 45%, transparent); }
.pform textarea, .pform input { width: 100%; padding: 9px 11px; border-radius: 9px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font-size: 13.5px; resize: vertical; }
.pform textarea:focus, .pform input:focus { outline: none; border-color: var(--secondary); box-shadow: 0 0 0 3px var(--accent-soft); }
.pform-date { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 10px; font-size: 12.5px; color: var(--muted); }
.pform-actions { display: flex; gap: 6px; }
.pi-list { list-style: none; margin: 0 0 8px; padding: 0; display: grid; gap: 6px; }
.pi { display: grid; grid-template-columns: 22px 1fr auto auto; align-items: start; gap: 8px; padding: 9px 8px 9px 10px; border-radius: 11px; border: 1px solid var(--border); background: var(--surface); }
.pi-ico { color: var(--personal); padding-top: 2px; }
.pi-ico svg { width: 17px; height: 17px; }
.pi-body p { font-size: 13.5px; line-height: 1.55; white-space: pre-wrap; overflow-wrap: anywhere; }
.pi-meta { font-size: 11px; color: var(--muted); }
.pi-meta b { font-weight: 700; margin-inline-start: 6px; }
.pi-meta .overdue { color: var(--danger); }
.pi-meta .done { color: var(--accent); }
.pi.is-done .pi-body p { text-decoration: line-through; color: var(--muted); }
.local-note { font-size: 11.5px; color: var(--faint); line-height: 1.5; margin-top: 6px; }

/* ---------- tablet / mobile ---------- */
@media (max-width: 900px) {
  .ex, .ex.controls-open, .ex.panel-open { display: block; }
  .ex-stage { height: 100%; }
  .ex-controls {
    position: fixed; z-index: 30; top: calc(var(--header-h) + env(safe-area-inset-top, 0px)); bottom: var(--bottom-space, 0px); inset-inline-start: 0;
    width: min(88vw, 320px); transform: translateX(-104%); transition: transform var(--t-slow) var(--ease);
    box-shadow: 20px 0 50px -30px var(--shadow);
  }
  html[dir="rtl"] .ex-controls { transform: translateX(104%); }
  .ex.controls-open .ex-controls { transform: none; }
  .ex-controls-inner { width: 100%; }
  .ex-panel {
    position: fixed; z-index: 31; inset-inline: 0; bottom: var(--bottom-space, 0px); height: min(66dvh, calc(100dvh - var(--header-h) - var(--bottom-space, 0px) - 40px));
    border-inline-start: 0; border-top: 1px solid var(--border); border-radius: 20px 20px 0 0;
    transform: translateY(102%); transition: transform var(--t-slow) var(--ease);
    box-shadow: 0 -24px 60px -30px var(--shadow);
  }
  .ex.panel-open .ex-panel { transform: none; }
  .panel-inner { width: 100%; }
  .ex-top { inset-inline: 10px; gap: 8px; }
  .lens-switch { width: 100%; }
  .lens-switch button { flex: 1; padding: 7px 6px; font-size: 12.5px; }
  .ex-graph { inset: 96px 0 64px; }
  .tb-filters span { display: none; }
  .ex-hint { display: none; }
}
@media (max-width: 480px) {
  .ex-toolbar { gap: 0; padding: 4px; }
  .tb { min-width: 34px; padding: 0 6px; }
  .tb-sep { margin: 0 2px; }
  .ex-status { font-size: 11px; }
}