/* Shared by index.html and descent.html: tokens and the primitives both pages draw with. */
:root{--bg:#F4F5F7;--panel:#FFFFFF;--panel2:#EEF0F3;--ink:#15171C;--muted:#535965;--faint:#8A909B;--line:#D7DAE0;--accent:#2457D6;--pk:#FBE5EE;--pkS:#B0305F;--lv:#EDE9FB;--lvS:#5F45BA;--gr:#E3F2E8;--grS:#27753F;--or:#FCEAD4;--orS:#9A5212;--yl:#FFF6D1;--ylS:#B08300;color-scheme:light}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0E1014;--panel:#161920;--panel2:#1D2129;--ink:#E6E8ED;--muted:#A3A9B5;--faint:#6F7684;--line:#2B303B;--accent:#7EA6FF;--pk:#351A26;--pkS:#F08DB0;--lv:#241F3B;--lvS:#B3A1F5;--gr:#13271A;--grS:#6FCB8F;--or:#302210;--orS:#F2AE6B;--yl:#2C2610;--ylS:#E3BD45;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0E1014;--panel:#161920;--panel2:#1D2129;--ink:#E6E8ED;--muted:#A3A9B5;--faint:#6F7684;--line:#2B303B;--accent:#7EA6FF;--pk:#351A26;--pkS:#F08DB0;--lv:#241F3B;--lvS:#B3A1F5;--gr:#13271A;--grS:#6FCB8F;--or:#302210;--orS:#F2AE6B;--yl:#2C2610;--ylS:#E3BD45;color-scheme:dark}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:'IBM Plex Sans',system-ui,sans-serif;color:var(--ink);background:var(--bg);font-size:14px;line-height:1.45}
.mono{font-family:'IBM Plex Mono',ui-monospace,Menlo,monospace}
button{font:inherit;color:inherit;cursor:pointer}
button:disabled{cursor:default}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.cap{font-size:12px;font-weight:600}
.sp{flex:1}
.chip{font-family:'IBM Plex Mono',ui-monospace,Menlo,monospace;font-size:12px;padding:3px 8px;border-radius:6px;border:1px solid var(--line);background:var(--panel);display:inline-flex;text-align:left;align-items:center;gap:6px;color:var(--ink)}
button.chip{min-height:24px}
.c-pk{background:var(--pk);border-color:var(--pkS)}.c-lv{background:var(--lv);border-color:var(--lvS)}.c-gr{background:var(--gr);border-color:var(--grS)}.c-or{background:var(--or);border-color:var(--orS)}
.tag{font-family:'IBM Plex Mono',ui-monospace,Menlo,monospace;font-size:11.5px;line-height:1.3;padding:2px 6px;border-radius:4px;align-self:flex-start;font-weight:500;max-width:100%;overflow-wrap:anywhere}
.t-pk{background:var(--pk);color:var(--pkS)}.t-lv{background:var(--lv);color:var(--lvS)}.t-gr{background:var(--gr);color:var(--grS)}.t-or{background:var(--or);color:var(--orS)}
.btn{border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:0 12px;height:32px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--panel)}
.btn.active{border-color:var(--accent);color:var(--accent)}
.ibtn{width:32px;padding:0;justify-content:center}
.seg{display:flex;padding:3px;border-radius:8px;background:var(--panel2);border:1px solid var(--line)}
.seg button{border:0;background:transparent;padding:4px 10px;border-radius:6px;color:var(--muted);white-space:nowrap}
.seg button[aria-pressed=true]{background:var(--panel);color:var(--ink);box-shadow:0 0 0 1px var(--line);font-weight:600}
.crumbs{display:flex;align-items:center;gap:2px;font-size:12px;padding:3px;border:1px solid var(--line);border-radius:8px;background:var(--panel2);min-width:0;overflow-x:auto}
.crumb{border:0;background:transparent;padding:4px 8px;border-radius:5px;color:var(--muted);white-space:nowrap}
.crumb[aria-current=page]{background:var(--panel);color:var(--ink);box-shadow:0 0 0 1px var(--line);font-weight:600}
.crumb:disabled{opacity:.4}
.sep{color:var(--faint)}
.dots{background-color:var(--bg);background-image:radial-gradient(var(--line) 1px,transparent 1px);background-size:16px 16px}
.sw{width:12px;height:12px;border-radius:3px;border:1.5px solid;display:inline-block;flex:none}
.ill{background:var(--yl)!important;border:1.5px dashed var(--ylS)!important}

.k-pk{background:var(--pk);border-color:var(--pkS)}.k-pk>.cap,.k-pk>.lay-h>.cap{color:var(--pkS)}
.k-lv{background:var(--lv);border-color:var(--lvS)}.k-lv>.cap,.k-lv>.lay-h>.cap{color:var(--lvS)}
.k-gr{background:var(--panel);border-color:var(--grS)}.k-gr>.cap,.k-gr>.lay-h>.cap{color:var(--grS)}
.thin.k-gr{background:var(--panel2)}
.k-or{background:var(--or);border-color:var(--orS)}.k-or>.cap,.k-or>.lay-h>.cap{color:var(--orS)}
.k-vm{background:var(--panel2);border-color:var(--ink)}.k-vm>.cap,.k-vm>.lay-h>.cap{color:var(--ink)}
/* Outline style says what kind of boundary a box is. */
.b-vm{border-width:3px;border-style:solid}
.b-ns{border-width:2px;border-style:dashed}
.b-group,.lay.b-group,.thin.b-group{border:1.5px dotted var(--faint);background:transparent}
.kstrip{border:1.5px solid var(--lvS);background:var(--lv);border-radius:10px;padding:10px 12px;display:flex;flex-direction:column;gap:8px}
.kstrip b{color:var(--lvS)}
.kstrip .d{color:var(--muted);font-size:12.5px}
.kstrip .chips{display:flex;gap:8px;flex-wrap:wrap}
.proc{border:1.5px solid var(--grS);background:var(--panel);border-radius:10px;padding:8px 12px;display:flex;flex-direction:column;gap:1px;text-align:left;cursor:pointer}
.proc .n{font-family:'IBM Plex Mono',ui-monospace,Menlo,monospace;font-weight:600;font-size:13.5px}
.proc .m{font-family:'IBM Plex Mono',ui-monospace,Menlo,monospace;font-size:12px;color:var(--muted)}
.proc[aria-pressed=true],.chip[aria-pressed=true]{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent)}
.cell{border:1px solid var(--line);border-radius:8px;padding:7px 8px;background:var(--panel);display:flex;flex-direction:column;gap:5px;min-width:0}
.cell .v{font-family:'IBM Plex Mono',ui-monospace,Menlo,monospace;font-size:12.5px;line-height:1.35;font-weight:500;overflow-wrap:anywhere}
.cell.real{border:2px solid var(--ink)}
.cell.chg{box-shadow:inset 3px 0 0 var(--accent)}
.realtag{font-size:11.5px;font-weight:600;color:var(--ink)}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
a.btn{text-decoration:none;color:inherit}
/* The packet's own colour: not used for any layer, so it cannot be mistaken for one. */
:root{--pkt:#00A3C7}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--pkt:#4FE3FF}}
:root[data-theme="dark"]{--pkt:#4FE3FF}
/* Page tabs, shared by both pages' headers. */
.tabs{display:flex;gap:4px;padding:3px;border-radius:10px;background:var(--panel2);border:1px solid var(--line);flex:none}
.tabs a{padding:5px 16px;border-radius:7px;font-size:14px;font-weight:600;color:var(--muted);text-decoration:none;white-space:nowrap}
.tabs a:hover{color:var(--ink)}
.tabs a[aria-current=page]{background:var(--accent);color:var(--panel)}