/* INTERARC ENCYCLOPEDIA — COMMAND CENTER SHELL */
@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500;600&family=Inter:wght@400;500;600;700;800&display=swap');
:root{--bg:#050a14;--paper:#091427;--ink:#dbf1ff;--muted:#83a8c1;--accent:#19d9ff;--line:rgba(66,195,245,.22);--nav:#030a16;--nav2:#102942;--navtxt:#b4d2e5;--shadow:0 18px 70px rgba(0,8,22,.65);--sans:'Inter',system-ui,sans-serif;--serif:'Inter',system-ui,sans-serif;--mono:'IBM Plex Mono',ui-monospace,monospace;--display:'Barlow Condensed','Inter',sans-serif;--read-size:17px}
html{background:#050a14}
body,body.night{--bg:#050a14;--paper:#091427;--ink:#dbf1ff;--muted:#83a8c1;--accent:#19d9ff;--line:rgba(66,195,245,.22);--nav:#030a16;--nav2:#102942;--shadow:0 18px 70px rgba(0,8,22,.65);color:var(--ink);background:radial-gradient(ellipse 80% 35% at 76% 0,rgba(0,105,190,.18),transparent),#050a14}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.25;background-image:linear-gradient(rgba(21,144,208,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(21,144,208,.1) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,#000,transparent 85%)}
#app{position:relative;z-index:1;grid-template-columns:284px minmax(0,1fr)}
.sidebar{background:linear-gradient(180deg,#060f20,#050d1a 85%);border-right:1px solid #14506e;box-shadow:inset -1px 0 0 rgba(25,216,255,.08)}
.brand{padding:24px 19px 26px;gap:12px;border-bottom:1px solid #19425c;background:radial-gradient(ellipse at 20% 0,rgba(0,177,255,.09),transparent 70%)}
.brand-symbol{width:50px;height:50px;border:1px solid #17d8ff;color:#8fecff;border-radius:2px;font:700 23px var(--display);box-shadow:inset 0 0 24px #00b7ff20,0 0 20px #00d5ff16;clip-path:polygon(14% 0,100% 0,100% 80%,86% 100%,0 100%,0 20%)}
.brand-symbol span{color:#17d8ff}
.brand strong{color:#ecfbff;letter-spacing:2px;font:700 16px var(--display)}
.brand small{font:500 8px/1.55 var(--mono);letter-spacing:.3px;color:#49bcd8;margin-top:5px}
.library-label{font-family:var(--mono);letter-spacing:1.2px;color:#4c9cb9}
.library-label span{color:#19d9ff;border:1px solid #16506c;padding:4px 6px;background:#092136}
.volnav{position:relative;border:1px solid transparent;border-radius:2px;margin-bottom:4px;min-height:48px;font:500 12px/1.4 var(--sans);color:#9abacf}
.volnav:hover{background:#102a40;border-color:#1b6481}
.volnav.active{background:linear-gradient(90deg,#0a364b,#0c2139);border:1px solid #187897;border-left:3px solid #20dcff;box-shadow:inset 0 0 26px #00c6ff10}
.volnum{font:600 11px var(--mono);color:#19d9ff}
.volnav .arrow{color:#48bed4}
.sidebar-bottom{border-top:1px solid #18425c}
.sb-motto{font:italic 14px/1.7 Georgia,serif;color:#a3ddec}
.sb-fine,.subtle-link{font-family:var(--mono);font-size:10px}
.topbar{height:76px;background:rgba(4,14,29,.94);border-bottom:1px solid #174d6f;box-shadow:0 10px 40px #0003;backdrop-filter:blur(18px)}
.topbar::after{content:"";position:absolute;bottom:-1px;left:0;width:155px;height:2px;background:linear-gradient(90deg,#15dcff,transparent)}
.wordmark{font:700 21px var(--display);letter-spacing:1.4px;color:#f2fcff}
.wordmark em{font:500 12px var(--mono);color:#18d4fb;letter-spacing:.4px;margin-left:7px}
.search-trigger{background:#0a1c2e;border:1px solid #245772;border-radius:3px;color:#8eb9ce;font:11px var(--mono);min-width:225px}
.search-trigger:hover{border-color:#15cfff;background:#12304b}
.iconbutton{color:#77b7d4;border:1px solid transparent;border-radius:2px}
.iconbutton:hover{background:#102b42;border-color:#195b78;color:#55e5ff}
.reading{max-width:1380px;padding:43px clamp(24px,5vw,75px) 90px}
.eyebrow{font:600 11px var(--mono);color:#19d9ff;letter-spacing:2.2px}
.hero{position:relative;overflow:hidden;padding:46px clamp(22px,4vw,55px) 40px;border:1px solid #1e5878;background:radial-gradient(ellipse at 80% 35%,rgba(0,137,221,.24),transparent 44%),linear-gradient(120deg,rgba(8,32,57,.94),rgba(5,13,28,.95));box-shadow:inset 0 0 45px #00bcff08,0 20px 50px #0004;clip-path:polygon(0 0,97% 0,100% 24px,100% 100%,0 100%)}
.hero::after{content:"◇";position:absolute;right:6%;top:8%;font:230px/1 var(--display);color:transparent;-webkit-text-stroke:1px rgba(42,216,255,.22);pointer-events:none;transform:rotate(15deg);text-shadow:0 0 70px #00bbff25}
.hero h1,.vol-hero h1,.article h1{font-family:var(--display);font-weight:600;letter-spacing:.4px;line-height:1.02}
.hero h1{font-size:clamp(52px,6vw,94px);text-transform:uppercase;max-width:840px;position:relative;z-index:1;margin:25px 0 18px}
.hero h1 em{font-style:normal;color:#1de0ff;text-shadow:0 0 30px #00aeff55}
.lead{font:14px/1.9 var(--sans);color:#a7c4d7;position:relative;z-index:1}
.hero-stats{position:relative;z-index:1}
.stat strong{font:600 33px var(--display);color:#d7f6ff}
.stat small{font:10px var(--mono);letter-spacing:1.1px;color:#6baac5}
.section-heading{align-items:center;margin:42px 0 18px;border-bottom:1px solid #174a65;padding-bottom:14px}
.section-heading h2{font:600 30px var(--display);text-transform:uppercase;letter-spacing:1.1px}
.section-heading span{font:10px var(--mono);color:#2cbbdf;letter-spacing:1.3px}
.shelf{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}
.bookcard{border:1px solid #1a4762;border-radius:3px;background:linear-gradient(140deg,#0d233c,#091725);position:relative;overflow:hidden;min-height:183px;padding:23px 24px}
.bookcard::before{content:"";position:absolute;top:0;left:0;width:27px;height:2px;background:#18d8ff}
.bookcard::after{content:"+";position:absolute;right:18px;bottom:10px;color:#147eaa;font:24px var(--mono)}
.bookcard:hover{border-color:#1cd6fa;background:linear-gradient(140deg,#102e4d,#091b2e);transform:translateY(-2px);box-shadow:0 7px 35px #00aaff13}
.bookcard .vtop{color:#37d8ff;font:10px var(--mono);letter-spacing:1.4px}
.bookcard h3{font:600 26px/1.1 var(--display);letter-spacing:.4px;color:#f2faff;text-transform:uppercase}
.bookcard p{font:12px/1.6 var(--sans);color:#8cb3c9}
.bookcard .vbottom{font:9px var(--mono);color:#52bad5;letter-spacing:1.3px}
.notice{border:1px solid #1c4f68;border-left:3px solid #19d9ff;background:#0c2034;color:#a0bdcf}
.breadcrumbs{font:11px var(--mono);color:#78aec7}
.breadcrumbs b{color:#18d8ff}
.vol-hero{background:linear-gradient(90deg,#0a2038,transparent);border-left:2px solid #12ccf3;padding:42px 26px 35px}
.vol-hero h1{font-size:clamp(44px,5vw,66px);text-transform:uppercase}
.vol-hero p{font:14px/1.8 var(--sans);color:#9bbcd0}
.chapter-row{border-bottom:1px solid #1a4560;padding:18px 13px}
.chapter-row:hover{background:#102940}
.chapter-row .chapter-no{font:18px var(--mono);color:#1bd5f5}
.chapter-row strong{font:500 20px var(--display);letter-spacing:.3px}
.chapter-row small{font:10px var(--mono);color:#79b1c8}
.chapter-row .go{color:#1acced}
.article{max-width:900px}
.article-head{border-bottom:1px solid #265a75}
.article h1{font-size:clamp(46px,5vw,72px);text-transform:uppercase}
.article-tools{gap:8px}
.pill{background:#0c253c;border:1px solid #1c5c7d;color:#a4d5eb;border-radius:2px;font:11px var(--mono);padding:10px 13px}
.pill:hover,.pill.on{border-color:#1edfff;color:#33dcff;background:#12334c}
.article-body{max-width:860px;font:var(--read-size)/1.9 'Inter',system-ui,sans-serif;color:#c8dce9;letter-spacing:.05px}
.article-body h2,.article-body h3{font-family:var(--display);color:#ecfaff;letter-spacing:.4px}
.article-body h2{font-size:30px;border-top:1px solid #204a67}
.article-body h3{font-size:23px}
.article-body strong{color:#ebfaff}
.article-body a{color:#50daff}
.article-body code{background:#122d41;color:#8be9ff}
.article-body pre{background:#030e1c;border:1px solid #1b526f}
.article-body blockquote{border-left:3px solid #17d9ff;color:#a4c5d7}
.chapter-foot{border-top:1px solid #20506b}
.chapter-foot button{background:#0a2339;border:1px solid #215978;border-radius:2px;color:#b4d9ea}
.chapter-foot button:hover{border-color:#19d9ff}
.footer{border-top:1px solid #154762;background:#06111f;color:#4b91b1;font:10px var(--mono);letter-spacing:1px}
.searchpanel{border:1px solid #2487a8;background:#07182a;border-radius:5px}
.dialog-heading{border-bottom:1px solid #245573}
.dialog-heading h2{font:600 27px var(--display);text-transform:uppercase}
#searchInput{background:#0c263b;border-color:#286486;border-radius:3px;color:#e6f8ff;font:13px var(--mono)}
.search-result{border-bottom-color:#1e4359;color:#e0f7ff}
.search-result:hover{background:#13314c}
.search-result small{color:#25d1f4}
.search-result strong{font:600 22px var(--display)}
.search-result span,.searchSummary,.searchfoot{color:#90b7ca}
.toast{background:#10344d;border:1px solid #189dcc;border-radius:2px}
body.focus #app{grid-template-columns:1fr}
body.focus .reading{max-width:1050px}
@media(max-width:960px){#app{grid-template-columns:240px minmax(0,1fr)}}
@media(max-width:700px){.brand{padding:18px 15px}.reading{padding:24px 15px 55px}.topbar{height:65px;padding:0 10px}.wordmark{font-size:16px}.wordmark em{font-size:8px}.topbar-actions{gap:2px}.search-trigger{min-width:0}.hero{padding:31px 21px}.hero h1{font-size:48px}.hero::after{font-size:135px}.lead{font-size:13px}.shelf{grid-template-columns:1fr}.bookcard{min-height:150px}.bookcard h3{font-size:23px}.article h1{font-size:42px}.article-body{font-size:var(--read-size)}}
@media print{body,body.night{background:#fff;color:#000}body::before{display:none}.article-body{color:#111}.article-body h2,.article-body h3,.article-body strong,.article h1{color:#000}.article-head{border-color:#bbb}.reading{background:#fff}}

/* Reader tables and legible educational data */
.table-scroll{overflow-x:auto;width:100%;margin:23px 0;border:1px solid #22536d;border-radius:3px}
.article-body table{border-collapse:collapse;width:100%;min-width:320px;font:13px/1.6 var(--sans)}
.article-body th,.article-body td{padding:10px 13px;border-bottom:1px solid #193d55;text-align:left;vertical-align:top}
.article-body th{background:#10314b;color:#65e6ff;font:600 11px/1.6 var(--mono);text-transform:uppercase;letter-spacing:.35px}
.article-body tbody tr:nth-child(even){background:#0b2134}
.article-body tbody tr:last-child td{border-bottom:0}
@media print{.table-scroll{overflow:visible;border:1px solid #bbb}.article-body table{color:#000}.article-body th{color:#000;background:#eee}.article-body th,.article-body td{border-color:#ddd}}

/* Alternate contrast palette for daylight reading while keeping the InterArc HUD */
body.light{--bg:#e9f4fb;--paper:#f8fcff;--ink:#153349;--muted:#557588;--line:#aecfdf;--accent:#006d91;color:#153349;background:#edf7fb}
body.light::before{opacity:.1}
body.light .main{background:linear-gradient(135deg,#e8f3fa,#f9fdff)}
body.light .topbar{background:#f8fcffee;border-color:#9bcee3}
body.light .wordmark{color:#102d43}
body.light .wordmark em{color:#087fa7}
body.light .search-trigger{background:#fff;color:#446b81;border-color:#9ccbdd}
body.light .iconbutton{color:#235872}
body.light .reading{color:#153349}
body.light .hero{background:radial-gradient(ellipse at 75% 20%,#c2e7f7,transparent 60%),linear-gradient(135deg,#f5fcff,#dceef8);border-color:#8ebcd0}
body.light .hero h1{color:#153349}
body.light .hero h1 em{color:#007da5;text-shadow:0 0 25px #74d8f390}
body.light .lead{color:#46697c}
body.light .eyebrow,.light .section-heading span{color:#006c91}
body.light .section-heading{border-color:#b5d2e0}
body.light .stat strong{color:#123951}
body.light .stat small{color:#52798e}
body.light .bookcard{background:linear-gradient(145deg,#fff,#ebf6fd);border-color:#add1e2}
body.light .bookcard h3{color:#19354a}
body.light .bookcard p{color:#52748a}
body.light .bookcard .vtop,body.light .bookcard .vbottom{color:#097497}
body.light .chapter-row{color:#19354a;border-color:#accdde}
body.light .chapter-row:hover{background:#e0f2fa}
body.light .chapter-row strong{color:#19354a}
body.light .vol-hero{background:linear-gradient(90deg,#d8edf8,transparent);border-color:#0784b0}
body.light .vol-hero h1{color:#183449}
body.light .vol-hero p{color:#527287}
body.light .article h1,body.light .article-body,body.light .article-body h2,body.light .article-body h3,body.light .article-body strong{color:#1c364a}
body.light .article-body h2,body.light .article-head{border-color:#bbd8e6}
body.light .article-body pre{background:#edf5fa;color:#153349;border-color:#a6cad9}
body.light .article-body code{background:#e0eff7;color:#07577c}
body.light .article-body a{color:#006c93}
body.light .pill,body.light .chapter-foot button{background:#fff;color:#1d5b78;border-color:#a1c7da}
body.light .notice{background:#e4f1f8;border-color:#86bed5;color:#2f5974}
body.light .table-scroll{border-color:#b2d2e1}
body.light .article-body th{background:#cde9f5;color:#18536d}
body.light .article-body td{border-color:#c0d9e5}
body.light .article-body tbody tr:nth-child(even){background:#edf6fb}
body.light .searchpanel{background:#f8fcff}
body.light .search-result{color:#18384f;border-color:#bad4e2}
body.light .search-result strong,body.light .dialog-heading h2{color:#18384f}
body.light #searchInput{background:#fff;color:#18384f}
body.light .searchSummary,body.light .searchfoot{color:#466e81}
@media print{body.light .reading,body.light .main{background:#fff}}