/* Course shortcuts and a shared, independently scrolling lesson index. */
.trainer-directory{margin:18px 0 28px;padding:18px 0;border-bottom:1px solid #29424a}
.trainer-directory-heading{margin:0 0 12px;color:#afc1c0;font:700 11px/1.5 system-ui,-apple-system,Segoe UI,sans-serif;letter-spacing:.12em;text-transform:uppercase}
.trainer-directory-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;align-items:start}
.trainer-directory details{min-width:0;border:1px solid #29424a;border-radius:10px;background:#0d2028}
.trainer-directory summary{padding:14px 16px;min-height:48px;color:#edf4ef;font-weight:650;cursor:pointer}
.trainer-directory summary::marker{color:#a8e3df}
.trainer-directory details[open] summary{border-bottom:1px solid #29424a}
.trainer-directory-links{display:grid;padding:8px;gap:3px}
.trainer-directory a{display:flex;align-items:center;min-height:44px;padding:8px;border-radius:6px;color:#a8e3df;text-decoration:none;font-size:14px;line-height:1.5}
.trainer-directory a:hover{background:#18313a;color:#edf4ef}
.trainer-directory a:focus-visible,.trainer-directory summary:focus-visible{outline:3px solid #e5b986;outline-offset:3px}
.shell>.trainer-tabs{position:sticky;top:0;z-index:15;display:flex;flex-wrap:nowrap;align-items:stretch;gap:7px;margin:0 0 24px;padding:10px 0;max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;background:var(--bg,#0b111a);border-bottom:1px solid var(--line,#314458);scroll-padding-inline:4px}
.trainer-tabs button{flex:0 0 auto;white-space:nowrap;min-height:44px}
.trainer-tabs button:focus-visible{outline:3px solid var(--amber,#e5b986);outline-offset:-3px}
.shell .layout{align-items:start}
.shell .layout>.sidebar{position:sticky;top:calc(var(--trainer-tabs-height,68px) + 16px);align-self:start;max-height:calc(100vh - var(--trainer-tabs-height,68px) - 32px);max-height:calc(100dvh - var(--trainer-tabs-height,68px) - 32px);overflow-y:auto;overflow-x:hidden;overscroll-behavior-y:contain;scrollbar-gutter:stable}
.shell .sidebar:focus-visible{outline:3px solid var(--amber,#e5b986);outline-offset:3px}
.shell .reader,.shell .lesson-reader,.shell [id^="reading-lesson-"]{scroll-margin-top:calc(var(--trainer-tabs-height,68px) + 16px)}
@media(max-width:1050px){.trainer-directory-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:900px){.shell .layout{grid-template-columns:minmax(0,1fr)}.shell .layout>.sidebar{position:static;top:auto;max-height:min(55vh,28rem);max-height:min(55dvh,28rem)}}
@media(max-width:560px){.trainer-directory-grid{grid-template-columns:minmax(0,1fr)}.trainer-directory{margin-top:14px}.shell>.trainer-tabs{margin-bottom:18px}}
@media print{.trainer-directory,.shell>.trainer-tabs,.shell .layout>.sidebar{display:none!important}.shell .layout{display:block}}