/* SPEC-182: /episodes browse page.
   Layer 2 = the Sortable Focus Rail (the chosen design, K), namespaced `erail-`
   so nothing collides with base.css. Layer 1 = the crawlable fallback grid
   (treatment-D cards from home.css + the small browse chrome below).
   Only loads on /episodes, so the token aliases map the prototype's names onto
   the SPEC-156 tokens base.css already defines. */
:root{
  --serif:var(--font-serif); --sans:var(--font-sans); --mono:var(--font-mono);
  --surface-2:var(--surface-elevated); --pill:var(--radius-pill);
}

/* ---- ambient topic tint (JS sets --tintc to the focused episode's colour) ---- */
.erail-tint{position:fixed;inset:0;z-index:-1;opacity:.22;pointer-events:none;
  background:radial-gradient(95% 75% at 50% 8%, var(--tintc, transparent), transparent 60%);
  transition:background 1s var(--ease)}

/* ---- rail root: full-bleed breakout from the .container ---- */
.erail-root{position:relative;width:100vw;margin-left:calc(50% - 50vw)}
.erail-root[hidden]{display:none}
.erail-bar{max-width:var(--maxw);margin:0 auto;padding:0 32px;width:100%;display:flex;flex-direction:column;gap:14px}

/* top command bar */
.erail-topbar{position:relative;z-index:40;padding:14px 0 14px;border-bottom:1px solid var(--border-subtle)}
.erail-brandrow{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.erail-eyebrow{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.14em;color:var(--text-3)}
.erail-h1{font-family:var(--serif);font-size:clamp(24px,2.8vw,34px);font-weight:600;line-height:1;margin:6px 0 0}
.erail-corpus{font-family:var(--mono);font-size:12px;color:var(--text-3);margin-left:auto}
.erail-cmdrow{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.erail-cmdk{position:relative;flex:1;min-width:240px;max-width:520px}
.erail-cmdk input{width:100%;background:var(--surface);border:1px solid var(--border-2);color:var(--text);
  border-radius:var(--pill);padding:11px 56px 11px 42px;font-family:var(--sans);font-size:14.5px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.erail-cmdk input::placeholder{color:var(--text-3)}
.erail-cmdk input:focus{outline:none;border-color:var(--accent-line);box-shadow:0 0 0 4px var(--accent-soft)}
.erail-mag{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:15px;pointer-events:none}
.erail-kbd{position:absolute;right:10px;top:50%;transform:translateY(-50%);font-family:var(--mono);font-size:11px;
  color:var(--text-3);border:1px solid var(--border-2);border-radius:6px;padding:2px 7px;background:var(--surface);pointer-events:none}
.erail-typeahead{position:absolute;top:calc(100% + 8px);left:0;right:0;z-index:60;background:var(--surface);
  border:1px solid var(--border-2);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:none}
.erail-typeahead.show{display:block}
.erail-ta-group{padding:7px 0}
.erail-ta-group+.erail-ta-group{border-top:1px solid var(--border-subtle)}
.erail-ta-label{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-3);padding:4px 16px 6px}
.erail-ta-item{display:flex;align-items:center;gap:10px;padding:8px 16px;cursor:pointer;font-size:14px;color:var(--text-2)}
.erail-ta-item:hover,.erail-ta-item.active{background:var(--accent-soft);color:var(--text)}
.erail-ta-item .kind{font-family:var(--mono);font-size:10.5px;color:var(--text-3);margin-left:auto}
.erail-chips{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.erail-chip{display:inline-flex;align-items:center;gap:7px;padding:7px 13px;border-radius:var(--pill);
  border:1px solid var(--border-2);background:rgba(255,255,255,.03);color:var(--text-2);font-size:13px;transition:all .2s;cursor:pointer}
.erail-chip:hover{border-color:var(--accent-line);color:var(--text)}
.erail-chip.on{background:var(--accent-soft);border-color:var(--accent-line);color:var(--accent)}

/* sort segmented control */
.erail-sortbar{display:flex;align-items:center;gap:13px;flex-wrap:wrap}
.erail-sortlabel{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-3)}
.erail-seg{display:inline-flex;background:var(--surface);border:1px solid var(--border-2);border-radius:var(--pill);padding:3px;gap:2px}
.erail-seg button{appearance:none;border:none;background:none;color:var(--text-2);font-family:var(--sans);font-size:13px;
  padding:7px 15px;border-radius:var(--pill);cursor:pointer;transition:color .2s var(--ease),background .2s var(--ease);white-space:nowrap}
.erail-seg button:hover{color:var(--text)}
.erail-seg button.on{background:var(--accent);color:var(--accent-ink);font-weight:600}
.erail-sorthint{font-family:var(--mono);font-size:11.5px;color:var(--text-3)}

/* the rail region */
.erail-railwrap{position:relative;display:flex;flex-direction:column;justify-content:center;padding:8px 0 0;overflow:hidden}
.erail-railwrap::before,.erail-railwrap::after{content:"";position:absolute;top:0;bottom:0;width:14vw;max-width:220px;z-index:20;pointer-events:none}
.erail-railwrap::before{left:0;background:linear-gradient(90deg,var(--bg),transparent)}
.erail-railwrap::after{right:0;background:linear-gradient(270deg,var(--bg),transparent)}
.erail-rail{position:relative;width:100%;height:70vh;min-height:440px;max-height:660px;perspective:1700px;overflow:hidden;touch-action:pan-y;cursor:grab}
.erail-rail.dragging{cursor:grabbing}
.erail-track{position:absolute;top:0;left:50%;height:100%;width:0;transform-style:preserve-3d;will-change:transform}

/* a cinematic frame */
.erail-frame{position:absolute;top:50%;left:0;width:clamp(320px,42vw,520px);height:88%;transform-origin:center center;
  will-change:transform,opacity;transition:transform .6s var(--ease),opacity .5s var(--ease),filter .35s var(--ease)}
.erail-rail.dragging .erail-frame{transition:none}
.erail-card{position:relative;width:100%;height:100%;border-radius:18px;overflow:hidden;border:1px solid var(--border-2);
  background:var(--surface);box-shadow:0 30px 80px -28px rgba(0,0,0,.85);display:flex;flex-direction:column;cursor:pointer;
  text-decoration:none;color:inherit}
.erail-card:hover{text-decoration:none}
.erail-root a{text-decoration:none}
.erail-fambar{position:absolute;top:0;left:0;right:0;height:3px;z-index:5;opacity:.9}
.erail-poster{position:absolute;inset:0}
.erail-poster::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,9,11,.10) 0%,rgba(8,9,11,.30) 42%,rgba(8,9,11,.94) 100%)}
.erail-pw1{background:radial-gradient(130% 110% at 70% 8%,#16202c,#0a0c10)}
.erail-pw2{background:radial-gradient(130% 110% at 28% 6%,#1b2030,#0a0c10)}
.erail-pw3{background:radial-gradient(130% 110% at 78% 16%,#11212a,#0a0c10)}
.erail-pw4{background:radial-gradient(130% 110% at 22% 22%,#201826,#0a0c10)}
.erail-pw5{background:radial-gradient(130% 110% at 60% 4%,#0f2430,#0a0c10)}
.erail-pw6{background:radial-gradient(130% 110% at 40% 26%,#241c1a,#0a0c10)}
.erail-still{position:absolute;inset:0;overflow:hidden}
.erail-still img{width:100%;height:100%;object-fit:cover;display:block;filter:saturate(.92) contrast(1.04);transform:scale(1.06)}
.erail-still::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,9,11,0) 30%,rgba(8,9,11,.55) 64%,rgba(8,9,11,.97) 100%)}
.erail-grain{position:absolute;inset:0;opacity:.5;mix-blend-mode:overlay;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E")}
.erail-topline{position:absolute;top:22px;left:32px;right:32px;z-index:3;display:flex;align-items:center;gap:10px}
.erail-epno{font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.7);border:1px solid rgba(255,255,255,.22);border-radius:var(--pill);padding:3px 11px}
.erail-nov{font-family:var(--mono);font-size:11px;font-weight:600;color:var(--accent-ink);background:var(--accent);border-radius:var(--pill);padding:3px 10px}
.erail-runtime{font-family:var(--mono);font-size:11.5px;color:rgba(255,255,255,.62);margin-left:auto;background:rgba(8,9,11,.5);border:1px solid rgba(255,255,255,.16);border-radius:7px;padding:3px 9px}
.erail-overlay{position:relative;z-index:3;margin-top:auto;padding:30px 32px}
.erail-tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--accent);margin-bottom:11px}
.erail-guest{font-family:var(--serif);font-weight:600;color:#fff;line-height:1.02;font-size:clamp(30px,3.2vw,46px);letter-spacing:-.015em;text-shadow:0 4px 30px rgba(0,0,0,.6);margin:0 0 4px}
.erail-sub{font-family:var(--serif);font-style:italic;font-size:18px;color:rgba(255,255,255,.82);line-height:1.25;margin:0 0 14px;max-width:42ch}
.erail-insight{color:rgba(243,244,246,.74);font-size:14.5px;line-height:1.55;max-width:50ch;margin:0 0 16px}
.erail-cta{display:inline-flex;align-items:center;gap:8px;align-self:flex-start;color:var(--accent);font-weight:600;font-size:14px}
/* non-centered frames: hide rich detail */
.erail-frame[data-foc="0"] .erail-tag,.erail-frame[data-foc="0"] .erail-sub,
.erail-frame[data-foc="0"] .erail-insight,.erail-frame[data-foc="0"] .erail-cta,
.erail-frame[data-foc="0"] .erail-runtime{opacity:0;pointer-events:none}
.erail-frame[data-foc="0"] .erail-guest{font-size:clamp(22px,2.2vw,30px)}
.erail-frame[data-foc="0"] .erail-still img{filter:saturate(.55) contrast(1) brightness(.78)}
.erail-frame[data-foc="1"]{z-index:10}
.erail-frame[data-foc="1"] .erail-card{border-color:var(--fam, var(--accent-line));
  box-shadow:0 40px 110px -30px rgba(0,0,0,.9),0 0 0 1px var(--fam, rgba(var(--accent-rgb),.12)),0 0 80px -22px var(--fam, var(--accent-glow))}
.erail-frame[data-foc="1"] .erail-still img{animation:erail-kenburns 18s ease-in-out infinite alternate}
@keyframes erail-kenburns{0%{transform:scale(1.05) translate(0,0)}100%{transform:scale(1.15) translate(-2.5%,-2%)}}

/* nav arrows + position + timeline */
.erail-navbtns{position:absolute;z-index:30;top:50%;transform:translateY(-50%);display:flex;width:100%;justify-content:space-between;padding:0 18px;pointer-events:none}
.erail-nav{pointer-events:auto;width:52px;height:52px;border-radius:50%;border:1px solid var(--border-2);background:rgba(16,18,22,.82);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:var(--text);font-size:20px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}
.erail-nav:hover{border-color:var(--accent-line);color:var(--accent)}
.erail-empty{position:absolute;inset:0;display:none;flex-direction:column;align-items:center;justify-content:center;text-align:center;z-index:15;padding:40px}
.erail-empty h3{font-family:var(--serif);font-size:30px;color:var(--text-2);margin-bottom:8px}
.erail-empty p{color:var(--text-3);font-size:15px;max-width:42ch;margin-bottom:20px}
.erail-railwrap.empty-on .erail-rail,.erail-railwrap.empty-on .erail-navbtns{visibility:hidden}
.erail-railwrap.empty-on .erail-empty{display:flex}
.erail-hint{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);z-index:22;font-family:var(--mono);font-size:11px;color:var(--text-3);display:flex;align-items:center;gap:8px}
.erail-hint .k{border:1px solid var(--border-2);border-radius:5px;padding:1px 6px;background:var(--surface)}
.erail-underbar{padding:14px 0 26px;border-top:1px solid var(--border-subtle)}
.erail-posrow{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.erail-position{font-family:var(--mono);font-size:12.5px;color:var(--text-3)}
.erail-position b{color:var(--text)}
.erail-position .now-guest{color:var(--text-2)}
.erail-legend{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-left:auto;font-family:var(--mono);font-size:11.5px;color:var(--text-3)}
.erail-legend .lg{display:inline-flex;align-items:center;gap:6px;cursor:pointer;transition:color .2s}
.erail-legend .lg:hover{color:var(--text)}
.erail-legend .dot{width:9px;height:9px;border-radius:50%}
.erail-timeline{position:relative;height:18px;margin-top:12px;cursor:pointer}
.erail-tl-track{position:absolute;top:8px;left:0;right:0;height:2px;background:var(--border)}
.erail-timeline .tick{position:absolute;top:4px;bottom:4px;width:2px;opacity:.55;transition:opacity .2s}
.erail-timeline .tick:hover{opacity:1}
.erail-tl-playhead{position:absolute;top:-2px;bottom:-2px;width:2px;background:var(--accent);transition:left .35s var(--ease)}
.erail-tl-playhead::after{content:"";position:absolute;top:-3px;left:50%;transform:translateX(-50%);width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent-glow)}
.erail-tl-caps{display:flex;justify-content:space-between;font-family:var(--mono);font-size:10.5px;color:var(--text-3);padding:0 2px;margin-top:6px}

/* ---- Layer 1: fallback grid chrome ---- */
.browse-head{padding:30px 0 8px}
.browse-head .eyebrow{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.14em;color:var(--text-3)}
.browse-head h1{font-family:var(--serif);font-size:clamp(30px,4vw,46px);margin:10px 0 8px}
.browse-head p{color:var(--text-2);font-size:16px}
.browse-filters{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:14px 0 24px}
.browse-filters .field{appearance:none;background:var(--surface-3);border:1px solid var(--border-2);color:var(--text);border-radius:10px;padding:9px 14px;font-size:13.5px;font-family:inherit}
.browse-filters .field:focus{outline:none;border-color:var(--accent-line)}
.browse-filters .browse-clear{font-size:13px;color:var(--text-3)}
.browse-filters .browse-clear:hover{color:var(--accent)}
.browse-empty{text-align:center;padding:70px 24px;color:var(--text-3)}
.browse-empty h3{font-family:var(--serif);font-size:24px;color:var(--text-2);margin-bottom:14px}
.pagination{display:flex;align-items:center;justify-content:center;gap:18px;margin:30px 0 60px;font-family:var(--mono);font-size:13px}
.pagination-link{color:var(--accent);border:1px solid var(--border-2);border-radius:var(--pill);padding:8px 16px;transition:all .2s}
.pagination-link:hover{border-color:var(--accent-line)}
.pagination-link.is-disabled{color:var(--text-3);opacity:.5}
.pagination-pos{color:var(--text-3)}

@media (max-width:760px){
  .erail-rail{height:auto;min-height:0;max-height:none;perspective:none;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;display:flex;cursor:default}
  .erail-track{position:static;display:flex;gap:14px;height:auto;width:auto;transform:none!important}
  .erail-frame{position:static!important;top:auto;left:auto;flex:0 0 82vw;width:82vw;height:auto;transform:none!important;opacity:1!important;display:block!important;scroll-snap-align:center}
  .erail-frame .erail-card{height:74vh;min-height:430px}
  .erail-frame[data-foc] .erail-tag,.erail-frame[data-foc] .erail-sub,.erail-frame[data-foc] .erail-insight,
  .erail-frame[data-foc] .erail-cta,.erail-frame[data-foc] .erail-runtime{opacity:1!important;pointer-events:auto}
  .erail-frame[data-foc="0"] .erail-still img{filter:saturate(.92) contrast(1.04)!important}
  .erail-railwrap::before,.erail-railwrap::after{display:none}
  .erail-navbtns{display:none}
  .erail-bar{padding:0 18px}
}

@media (prefers-reduced-motion:reduce){
  .erail-frame{transition:none!important}
  .erail-frame[data-foc="1"] .erail-still img{animation:none!important}
  .erail-tint{transition:none!important}
  .erail-tl-playhead{transition:none!important}
}