/* ETB audio player: styles. Shared by every chapter. See audio/README.md. */

.etb-audio-on{padding-bottom:132px;}
/* Title card: listen row */
.etb-title-listen{display:flex;align-items:center;flex-wrap:wrap;gap:10px 16px;margin:-.25rem 0 1.35rem;position:relative;}
.etb-listen-pill{display:inline-flex;align-items:center;gap:9px;font-family:sans-serif;font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#1a3a5c;background:#fff;border:1px solid #c9d3de;border-radius:99px;padding:6px 15px 6px 6px;cursor:pointer;transition:background .15s,color .15s,border-color .15s;}
.etb-listen-pill:hover{background:#1a3a5c;border-color:#1a3a5c;color:#fff;}
.etb-listen-pill:focus-visible,.etb-listen-here:focus-visible,.etb-ap button:focus-visible{outline:2px solid #2a7a4f;outline-offset:2px;}
.etb-listen-ico{width:24px;height:24px;border-radius:50%;background:#1a3a5c;display:flex;align-items:center;justify-content:center;flex:none;transition:background .15s;}
.etb-listen-pill:hover .etb-listen-ico{background:#fff;}
.etb-listen-ico svg{width:9px;height:10px;fill:#fff;margin-left:2px;}
.etb-listen-pill:hover .etb-listen-ico svg{fill:#1a3a5c;}
.etb-listen-len{font-weight:400;letter-spacing:.06em;opacity:.65;}
.etb-textonly{font-family:sans-serif;font-size:11.5px;color:#999;text-decoration:none;background:none;border:0;border-bottom:1px dotted #ccc;padding:0 0 1px;cursor:pointer;}
.etb-textonly:hover{color:#1a3a5c;border-bottom-color:#1a3a5c;}
/* "Listen" on each section label */
.etb-slbl.etb-has-listen,.etb-kicker.etb-has-listen{display:flex;justify-content:space-between;align-items:baseline;gap:12px;}
.etb-listen-here{font-family:sans-serif;font-size:10px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:#bbb;background:none;border:0;padding:0;cursor:pointer;white-space:nowrap;display:inline-flex;align-items:center;gap:6px;transition:color .15s;}
.etb-listen-here:hover{color:#1a3a5c;}
.etb-listen-here svg{width:7px;height:8px;fill:currentColor;}
.etb-listen-here .etb-eq{display:none;}
.etb-listen-here.is-current{color:#2a7a4f;}
.etb-listen-here.is-current svg{display:none;}
.etb-listen-here.is-current .etb-eq{display:inline-flex;}
.etb-app-header .etb-listen-here{margin-left:auto;color:#5a9a7f;}
.etb-app-header .etb-listen-here:hover{color:#1a3a2a;}
.etb-syn-header.etb-has-listen{display:flex;justify-content:space-between;align-items:baseline;}
.etb-syn-header .etb-listen-here{color:rgba(255,255,255,.45);}
.etb-syn-header .etb-listen-here:hover,.etb-syn-header .etb-listen-here.is-current{color:#fff;}
.etb-eq{gap:2px;align-items:flex-end;height:9px;}
.etb-eq i{display:block;width:2px;height:3px;background:currentColor;border-radius:1px;}
.etb-playing .etb-eq i{animation:etbEq 1s ease-in-out infinite;}
.etb-playing .etb-eq i:nth-child(2){animation-delay:-.4s;}
.etb-playing .etb-eq i:nth-child(3){animation-delay:-.7s;}
@keyframes etbEq{0%,100%{height:3px}50%{height:9px}}
/* Marker on the section being read */
.etb-audio-current{position:relative;}
.etb-audio-current::before{content:"";position:absolute;left:-14px;top:.35rem;bottom:2.75rem;width:2px;border-radius:2px;background:#2a7a4f;opacity:.5;}
.etb-hook.etb-audio-current::before,.etb-bigidea.etb-audio-current::before,.etb-applications.etb-audio-current::before,.etb-synthesis.etb-audio-current::before{bottom:.35rem;}
/* Docked player */
.etb-ap{position:fixed;left:0;right:0;bottom:0;z-index:9998;background:#fff;border-top:1px solid #e6e6e6;box-shadow:0 -6px 24px rgba(26,58,92,.08);transform:translateY(105%);visibility:hidden;transition:transform .28s ease,visibility 0s .28s;font-family:sans-serif;color:#1a1a1a;}
.etb-ap.is-open{transform:none;visibility:visible;transition:transform .28s ease;}
.etb-ap-in{max-width:740px;margin:0 auto;padding:.7rem 1rem calc(.8rem + env(safe-area-inset-bottom));box-sizing:border-box;}
.etb-ap button{font-family:inherit;}
.etb-ap-top{display:flex;align-items:center;gap:12px;margin-bottom:.55rem;}
.etb-ap-now{flex:1;min-width:0;text-align:left;background:none;border:0;padding:0;cursor:pointer;}
.etb-ap-kicker{display:block;font-size:9.5px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:#aaa;margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.etb-ap-demo{color:#b07a1e;letter-spacing:.12em;margin-left:6px;}
.etb-ap-title{display:block;font-family:Georgia,'Times New Roman',serif;font-size:15px;font-style:italic;color:#1a3a5c;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.etb-ap-now:hover .etb-ap-title{text-decoration:underline;text-decoration-color:#c9d3de;text-underline-offset:3px;}
.etb-ap-tools{display:flex;align-items:center;gap:4px;flex:none;}
.etb-ap-tool{height:30px;min-width:30px;border:0;background:none;border-radius:6px;color:#888;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;letter-spacing:.02em;padding:0 7px;}
.etb-ap-tool:hover,.etb-ap-tool[aria-expanded="true"]{background:#f2f4f7;color:#1a3a5c;}
.etb-ap-tool svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.etb-ap-speed{min-width:44px;font-variant-numeric:tabular-nums;}
.etb-ap-bot{display:flex;align-items:center;gap:10px;}
.etb-ap-skip{width:34px;height:34px;border:0;background:none;border-radius:50%;color:#777;cursor:pointer;position:relative;flex:none;display:flex;align-items:center;justify-content:center;}
.etb-ap-skip:hover{color:#1a3a5c;background:#f2f4f7;}
.etb-ap-skip svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.etb-ap-skip span{position:absolute;font-size:8px;font-weight:700;top:50%;left:50%;transform:translate(-50%,-38%);}
.etb-ap-play{width:42px;height:42px;border-radius:50%;border:0;background:#1a3a5c;color:#fff;cursor:pointer;flex:none;display:flex;align-items:center;justify-content:center;transition:background .15s,transform .1s;}
.etb-ap-play:hover{background:#244b74;}
.etb-ap-play:active{transform:scale(.95);}
.etb-ap-play svg{width:14px;height:16px;fill:currentColor;}
.etb-ap-play .i-pause{display:none;}
.etb-playing .etb-ap-play .i-play{display:none;}
.etb-playing .etb-ap-play .i-pause{display:block;}
.etb-ap-play .i-play{margin-left:3px;}
.etb-ap-time{font-size:11px;color:#999;font-variant-numeric:tabular-nums;flex:none;min-width:34px;}
.etb-ap-time.is-end{text-align:right;}
.etb-ap-track{position:relative;flex:1;height:22px;display:flex;align-items:center;cursor:pointer;}
.etb-ap-rail{position:relative;width:100%;height:4px;border-radius:4px;background:#e9edf2;overflow:hidden;}
.etb-ap-fill{position:absolute;left:0;top:0;bottom:0;width:0;background:linear-gradient(90deg,#2a7a4f,#1a3a5c);}
.etb-ap-tick{position:absolute;top:-2px;bottom:-2px;width:2px;background:#fff;}
.etb-ap-thumb{position:absolute;top:50%;width:12px;height:12px;margin:-6px 0 0 -6px;border-radius:50%;background:#1a3a5c;box-shadow:0 0 0 3px #fff;left:0;opacity:0;transition:opacity .15s;pointer-events:none;}
.etb-ap-track:hover .etb-ap-thumb,.etb-ap-track:focus-within .etb-ap-thumb,.etb-ap-track.is-drag .etb-ap-thumb{opacity:1;}
.etb-ap-track input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer;}
.etb-ap-track:focus-within .etb-ap-rail{box-shadow:0 0 0 2px #fff,0 0 0 4px #2a7a4f;}
.etb-ap-tip{position:absolute;bottom:24px;transform:translateX(-50%);background:#1a3a5c;color:#fff;font-size:11px;line-height:1.35;padding:5px 9px;border-radius:6px;white-space:nowrap;pointer-events:none;opacity:0;transition:opacity .12s;max-width:240px;overflow:hidden;text-overflow:ellipsis;}
.etb-ap-tip b{font-variant-numeric:tabular-nums;opacity:.7;font-weight:400;margin-right:6px;}
.etb-ap-track:hover .etb-ap-tip{opacity:1;}
/* Contents panel */
.etb-ap-menu{position:absolute;right:max(1rem,calc(50% - 370px + 1rem));bottom:calc(100% + 8px);width:330px;max-width:calc(100vw - 2rem);background:#fff;border:1px solid #e3e3e3;border-radius:10px;box-shadow:0 10px 32px rgba(26,58,92,.16);padding:.5rem 0 0;display:none;max-height:min(70vh,520px);overflow:auto;}
.etb-ap-menu.is-open{display:block;}
.etb-ap-menu-h{font-size:9.5px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:#aaa;padding:.5rem 1rem .4rem;}
.etb-ap-item{display:flex;align-items:baseline;gap:10px;width:100%;background:none;border:0;text-align:left;padding:.55rem 1rem;cursor:pointer;color:#1a1a1a;}
.etb-ap-item:hover{background:#f6f7f9;}
.etb-ap-item.is-current{background:#eef6f0;}
.etb-ap-item-n{font-size:10px;font-weight:700;color:#bbb;width:16px;flex:none;font-variant-numeric:tabular-nums;}
.etb-ap-item.is-current .etb-ap-item-n{color:#2a7a4f;}
.etb-ap-item-t{flex:1;font-family:Georgia,serif;font-size:14px;line-height:1.35;}
.etb-ap-item-t small{display:block;font-family:sans-serif;font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:#aaa;margin-bottom:1px;}
.etb-ap-item-d{font-size:11px;color:#aaa;font-variant-numeric:tabular-nums;flex:none;}
.etb-ap-menu-foot{border-top:1px solid #eee;margin-top:.4rem;padding:.7rem 1rem .8rem;display:flex;flex-direction:column;gap:.45rem;}
.etb-ap-menu-foot a{font-size:12px;color:#1a3a5c;text-decoration:none;display:flex;align-items:center;gap:8px;}
.etb-ap-menu-foot a:hover{text-decoration:underline;}
.etb-ap-menu-foot svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none;}
.etb-ap-menu-foot span{color:#aaa;font-size:11px;}
/* The sentence being read (device voice) */
::highlight(etb-reading){background-color:#dcefe2;color:inherit;}
.etb-synthesis ::highlight(etb-reading){background-color:rgba(255,255,255,.22);color:#fff;}
.etb-reading-el{background-color:#dcefe2!important;box-shadow:0 0 0 4px #dcefe2;border-radius:3px;transition:background-color .2s;}
.etb-synthesis .etb-reading-el{background-color:rgba(255,255,255,.14)!important;box-shadow:0 0 0 4px rgba(255,255,255,.14);}
/* Voice picker */
.etb-ap-voice{display:flex;flex-direction:column;gap:5px;}
.etb-ap-voice label{font-size:9.5px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:#aaa;}
.etb-ap-voice select{width:100%;font:inherit;font-size:12.5px;color:#1a1a1a;background:#fff;border:1px solid #d7dde4;border-radius:6px;padding:6px 8px;}
.etb-ap-voice p{margin:0;font-size:11px;line-height:1.45;color:#999;}
.etb-ap-menu-foot button.etb-ap-link{font:inherit;font-size:12px;color:#1a3a5c;background:none;border:0;padding:0;cursor:pointer;display:flex;align-items:center;gap:8px;text-align:left;}
.etb-ap-menu-foot button.etb-ap-link:hover{text-decoration:underline;}
/* Text-only reading view */
.etb-rv{position:fixed;inset:0;z-index:10000;background:#fff;overflow-y:auto;-webkit-overflow-scrolling:touch;color:#1a1a1a;}
.etb-rv-bar{position:sticky;top:0;background:#fff;border-bottom:1px solid #eee;z-index:1;}
.etb-rv-bar-in{max-width:680px;margin:0 auto;padding:.65rem max(16px,env(safe-area-inset-right,0px)) .65rem max(16px,env(safe-area-inset-left,0px));display:flex;justify-content:space-between;align-items:center;gap:12px;font-family:sans-serif;font-size:12px;color:#888;}
.etb-rv-bar button{font:inherit;font-size:12.5px;font-weight:600;color:#1a3a5c;background:#f2f4f7;border:0;border-radius:6px;padding:7px 12px;cursor:pointer;}
.etb-rv-in{max-width:680px;margin:0 auto;padding:1rem max(16px,env(safe-area-inset-right,0px)) 5rem max(16px,env(safe-area-inset-left,0px));font-family:Georgia,'Times New Roman',serif;font-size:18px;line-height:1.75;}
.etb-rv h1{font-size:30px;line-height:1.2;margin:1.25rem 0 .3rem;text-wrap:balance;}
.etb-rv-sub{font-style:italic;color:#666;margin:0 0 2.25rem;}
.etb-rv h2{font-size:23px;line-height:1.3;margin:2.75rem 0 .9rem;text-wrap:balance;}
.etb-rv h2 small{display:block;font-family:sans-serif;font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:#888;margin-bottom:.35rem;}
.etb-rv h3{font-size:19px;line-height:1.35;margin:2rem 0 .6rem;}
.etb-rv p{margin:0 0 1.1rem;}
.etb-rv .etb-rv-minor{font-family:sans-serif;font-size:13px;font-weight:700;letter-spacing:.03em;color:#1a3a5c;margin:1.75rem 0 .45rem;}
.etb-rv .etb-rv-prompt{border-left:3px solid #c9a227;padding-left:1rem;font-style:italic;color:#444;}
.etb-rv:focus{outline:none;}
@media (max-width:600px){
  .etb-ap-in{padding:.6rem .85rem calc(.7rem + env(safe-area-inset-bottom));}
  .etb-ap-title{font-size:14px;}
  .etb-ap-time{font-size:10.5px;min-width:30px;}
  .etb-ap-bot{gap:6px;}
  .etb-audio-current::before{left:-9px;}
  .etb-listen-here .etb-listen-len{display:none;}
  .etb-ap-kicker .etb-ap-ch{display:none;}
}
@media (prefers-reduced-motion:reduce){.etb-ap{transition:none}.etb-playing .etb-eq i{animation:none;height:6px}}
@media print{.etb-ap,.etb-title-listen,.etb-listen-here,.etb-rv{display:none!important}}