/* ════════════════════════════════════════════════════════════════ Aaron's Math Sprint — Shared Stylesheet "AMBER CONSOLE" mission-control system (redesign 2026-07-05). UI: IBM Plex Sans · Data/labels: IBM Plex Mono · No serif. Aesthetic direction: Mission control / calm cockpit / everything one glance away. - Cold slate dark theme (default via [data-theme="midnight"]), cool-paper light theme (:root, the "vermillion" localStorage value). - ONE accent: instrument amber. Green reserved for passed/success. - HUD corner brackets on cards, 1px lines over shadows, radius ≤2px. - Mono numerals for every piece of data. Motion: quiet (150ms). TWO THEMES via : (default / "vermillion") cool paper + ink + amber [data-theme="midnight"] cold slate + amber (primary look) COMPONENT CONTRACT (classes pages may use): Shell ....... .site-header .brand .nav .nav a[.active] .theme-toggle .page .page-head .eyebrow footer.site-footer Surfaces .... .card .card.flat .callout .callout--hill Type ........ h1 h2 h3 .lead .sub .mono code Buttons ..... .btn .btn--secondary .btn--ghost .btn--success Tags ........ .tag .pill (.pill--win .pill--hill .pill--away .pill--info) Tiles ....... .tiles (grid) a.tile .tile b .tile span .tile__meta Progress .... .bar .bar > i .stat .stat .n .statgrid .statrow Routine ..... .steps .step .step__t .step__b .minday Tracker ..... .track label input .streak .streak .n Reveal ...... details.reveal summary .reveal__body Decision .... .tree .tree .q .tree .arrow Confidence .. .attrib .attrib .win .attrib .err Plan ........ .phase .phase h3 .wk Worked ex ... .we .we__step .answer (inside details.reveal) .formula Console ..... .hud (corner brackets, add to any surface) Dock/Palette .dock … .pal … (injected by aaron-chrome.js — do not hand-write; include