/* BMS5410 Negotiation Learning Platform - shared styles (no external dependencies) */
:root{--ink:#12233d;--muted:#56657a;--bg:#eef3f8;--card:#fff;--line:#d9e2ec;--navy:#173b67;--navy2:#0f2a4b;--gold:#a86e17;--gold-bg:#f8f3e8;--gold-line:#ecd8a8;--green:#176a4a;--green-bg:#edf8f2;--green-line:#b8ddc9;--red:#9b3535;--red-bg:#fff1f1;--red-line:#efc5c5;--link:#0b5cad;--radius:16px;--shadow:0 10px 30px rgba(24,52,86,.08)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:linear-gradient(180deg,#eaf0f7,#f8fafc 400px);color:var(--ink);line-height:1.6;font-size:16px}
a{color:var(--link)}a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid #f0b54a;outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 12px;z-index:100}.skip:focus{left:8px;top:8px}
/* Top nav */
.topbar{position:sticky;top:0;z-index:50;background:var(--navy2);color:#fff;box-shadow:0 2px 10px rgba(0,0,0,.15)}
.topbar .inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;gap:14px;padding:10px 18px;flex-wrap:wrap}
.brand{color:#fff;text-decoration:none;font-weight:800;letter-spacing:.02em;display:flex;align-items:center;gap:10px}
.brand .logo{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--gold);color:#fff;font-weight:900}
.brand small{display:block;font-weight:600;color:#c9d6e6;font-size:11px;letter-spacing:.08em}
.topnav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.topnav a{color:#e6eef8;text-decoration:none;padding:7px 11px;border-radius:9px;font-size:14px;font-weight:600}
.topnav a:hover,.topnav a[aria-current="page"]{background:rgba(255,255,255,.14);color:#fff}
.navtoggle{display:none;margin-left:auto;background:transparent;border:1px solid rgba(255,255,255,.4);color:#fff;border-radius:9px;padding:6px 10px;font:inherit;cursor:pointer}
.topprog{height:4px;background:rgba(255,255,255,.12)}.topprog span{display:block;height:100%;background:var(--gold);width:0;transition:width .4s}
/* Layout */
.layout{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:270px minmax(0,1fr);gap:24px;padding:22px 18px}
.layout.nosidebar{grid-template-columns:minmax(0,1fr);max-width:1100px}
.sidebar{position:sticky;top:76px;align-self:start;max-height:calc(100vh - 96px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow)}
.sidebar h2{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:4px 6px 8px}
.sidebar ol{list-style:none;margin:0;padding:0}
.sidebar li a{display:flex;gap:8px;align-items:flex-start;padding:7px 8px;border-radius:10px;text-decoration:none;color:var(--ink);font-size:14px;line-height:1.3}
.sidebar li a:hover{background:#f1f5fa}
.sidebar li a[aria-current="page"]{background:#e8eff8;font-weight:700;color:var(--navy)}
.sidebar .num{flex:none;display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#e8eff8;color:var(--navy);font-size:12px;font-weight:800}
.sidebar li.done .num{background:var(--green);color:#fff}
.sidebar li.done .num::after{content:"✓"}.sidebar li.done .num span{display:none}
.sidebar .extra a{font-size:13px;color:var(--muted)}
.sideprog{margin:12px 6px 4px;font-size:12px;color:var(--muted)}
main{min-width:0}
/* Cards & typography */
.card,.hero{background:rgba(255,255,255,.98);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px 26px;margin-bottom:18px}
.hero{padding:30px 30px;background:linear-gradient(135deg,#fff 0%,#f5f8fc 60%,#fbf6ec 100%)}
.eyebrow{font-size:12px;letter-spacing:.12em;font-weight:800;color:var(--gold);text-transform:uppercase}
h1{font-size:34px;line-height:1.12;margin:8px 0 10px;color:var(--navy2)}
h2{font-size:23px;line-height:1.25;margin:0 0 12px;color:var(--navy2)}
h3{font-size:17px;margin:20px 0 8px;color:var(--navy)}
.sub,.lead{color:var(--muted);font-size:17px;max-width:820px}
.small{font-size:13px;color:var(--muted)}
.meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.pill{border:1px solid var(--line);background:#f8fafc;padding:5px 10px;border-radius:999px;font-size:12px;font-weight:700;color:var(--navy)}
.pill.gold{background:var(--gold-bg);border-color:var(--gold-line);color:#7a4f0f}
.section-label{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.section-label .ic{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;background:#e8eff8;color:var(--navy);font-weight:900;font-size:15px}
.objectives li,.takeaways li{margin:6px 0}
.voice{border-left:4px solid var(--gold);padding-left:16px}
.callout{padding:14px 16px;border-radius:12px;margin:14px 0;line-height:1.55}
.callout.seller,.seller{background:#eef4fa;border-left:5px solid var(--navy);padding:13px 16px;border-radius:12px;margin:10px 0}
.callout.you,.you{background:var(--gold-bg);border-left:5px solid var(--gold);padding:13px 16px;border-radius:12px;margin:10px 0}
.callout.coach,.coach{background:var(--green-bg);border-left:5px solid var(--green);padding:13px 16px;border-radius:12px;margin:10px 0}
.callout.warnbox{background:var(--red-bg);border-left:5px solid var(--red)}
.callout.critical{background:#f4f1fb;border-left:5px solid #5b3f99}
.rulebox{background:linear-gradient(135deg,var(--navy2),var(--navy));color:#fff;border-radius:var(--radius);padding:20px 24px;margin-bottom:18px;box-shadow:var(--shadow)}
.rulebox .eyebrow{color:#f0c879}.rulebox p{font-size:19px;font-weight:700;margin:6px 0 0;line-height:1.4}
.jlinkbox{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn,button.btn{appearance:none;display:inline-flex;align-items:center;gap:8px;border:1px solid #c5d3e3;background:#fff;color:var(--navy2);padding:10px 16px;border-radius:11px;font:inherit;font-weight:700;font-size:15px;cursor:pointer;text-decoration:none;transition:.15s}
.btn:hover{border-color:#8ca7c3;background:#f6f9fd}
.btn.primary{background:var(--navy);color:#fff;border-color:var(--navy)}.btn.primary:hover{background:var(--navy2)}
.btn.gold{background:var(--gold);color:#fff;border-color:var(--gold)}.btn.gold:hover{background:#8e5c12}
.btn.done{background:var(--green);border-color:var(--green);color:#fff}
.btn.small{padding:6px 11px;font-size:13px}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:10px 0}
table{width:100%;border-collapse:collapse;font-size:14.5px}
th,td{border-bottom:1px solid var(--line);padding:9px 8px;text-align:left;vertical-align:top}
th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.06em;background:#f8fafc}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.stat{padding:14px;border:1px solid var(--line);border-radius:14px;background:#fbfdff}.stat b{display:block;font-size:22px;color:var(--navy)}
.tags{display:flex;gap:7px;flex-wrap:wrap}.tag{font-size:12px;padding:5px 9px;border-radius:999px;background:#edf3f9;border:1px solid #d7e1ec}
code{background:#f2f5f9;border:1px solid var(--line);border-radius:6px;padding:1px 5px;font-size:13px}
details.more{border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin:10px 0;background:#fbfdff}
details.more summary{cursor:pointer;font-weight:700;color:var(--navy)}
/* Progress */
.progress{height:12px;background:#e3eaf2;border-radius:999px;overflow:hidden;margin:10px 0 6px}
.progress .bar{height:100%;width:0;background:linear-gradient(90deg,var(--navy),var(--green));transition:width .5s}
/* Home module cards */
.mgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.mcard{position:relative;display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;text-decoration:none;color:var(--ink);box-shadow:0 4px 14px rgba(24,52,86,.05);transition:.15s}
.mcard:hover{transform:translateY(-2px);border-color:#9fb6cf}
.mcard .mnum{font-size:12px;font-weight:800;color:var(--gold);letter-spacing:.08em}
.mcard h3{margin:0;font-size:16px}
.mcard p{margin:0;font-size:13.5px;color:var(--muted)}
.mcard .tick{position:absolute;top:12px;right:12px;width:26px;height:26px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;font-size:14px;color:transparent}
.mcard.done .tick{background:var(--green);border-color:var(--green);color:#fff}
.mcard .itype{font-size:12px;color:var(--navy);font-weight:700}
.criteria4 .stat h3{margin-top:0}
/* Quiz engine */
.quiz{margin-top:8px}
.qitem{border:1px solid var(--line);border-radius:14px;padding:16px;margin:12px 0;background:#fbfdff}
.qitem .qn{font-size:12px;font-weight:800;color:var(--gold);letter-spacing:.08em}
.qitem .qq{font-weight:700;margin:4px 0 10px}
.qopts{display:grid;gap:8px}
.qopts button,.choices button{appearance:none;border:1px solid #cbd8e6;background:#fff;border-radius:11px;padding:11px 14px;text-align:left;font:inherit;font-size:15px;cursor:pointer;color:var(--ink);transition:.12s}
.qopts button:hover:not(:disabled),.choices button:hover:not(:disabled){border-color:#8ca7c3;background:#f6f9fd}
.qopts button:disabled{cursor:default;opacity:1}
.qopts button.correct{background:var(--green-bg);border-color:var(--green);font-weight:600}
.qopts button.wrong{background:var(--red-bg);border-color:var(--red)}
.qopts button.correct::before{content:"✓ ";color:var(--green);font-weight:900}
.qopts button.wrong::before{content:"✗ ";color:var(--red);font-weight:900}
.qfb{margin-top:10px;padding:12px 14px;border-radius:11px;line-height:1.5}
.qfb.good{background:var(--green-bg);border:1px solid var(--green-line)}
.qfb.bad{background:var(--red-bg);border:1px solid var(--red-line)}
.qfb ul{margin:8px 0 0;padding-left:18px}.qfb li{margin:4px 0;font-size:14px}
.qscore{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 14px;border-radius:12px;background:#eef4fa;border:1px solid #d3e0ee;font-weight:700}
/* Classify engine */
.citem{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin:8px 0;background:#fff}
.citem .ctext{font-size:15px}
.cbtns{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.cbtns button{appearance:none;border:1px solid #c5d3e3;background:#f8fafc;border-radius:9px;padding:7px 10px;font:inherit;font-size:13px;font-weight:700;cursor:pointer;color:var(--navy2)}
.cbtns button:hover:not(:disabled){background:#eaf1f9}
.cbtns button.picked.ok{background:var(--green);color:#fff;border-color:var(--green)}
.cbtns button.picked.no{background:var(--red);color:#fff;border-color:var(--red)}
.cbtns button.answer{outline:2px dashed var(--green)}
.citem .cfb{grid-column:1/-1;font-size:14px;padding:8px 10px;border-radius:9px}
.citem .cfb.ok{background:var(--green-bg)}.citem .cfb.no{background:var(--red-bg)}
/* Forms */
label.field{display:block;font-weight:700;font-size:14px;margin:12px 0 4px;color:var(--navy2)}
input[type=text],input[type=number],input[type=date],select,textarea{width:100%;border:1px solid #c5d3e3;border-radius:10px;padding:9px 11px;font:inherit;font-size:15px;background:#fff;color:var(--ink)}
textarea{min-height:90px;resize:vertical}
textarea.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px;min-height:220px;background:#fbfdff}
input[type=range]{width:100%;accent-color:var(--navy)}
.hint{font-size:13px;color:var(--muted);margin-top:3px}
.checkrow{display:flex;gap:9px;align-items:flex-start;margin:8px 0;cursor:pointer}.checkrow input{margin-top:5px;width:17px;height:17px;flex:none;accent-color:var(--green)}
/* ZOPA / bars */
.zopa{position:relative;height:96px;margin:30px 0 40px;background:#f1f5f9;border-radius:10px;border:1px solid var(--line)}
.zopa .zone{position:absolute;top:30px;height:36px;border-radius:6px;background:rgba(23,106,74,.25);border:2px solid var(--green)}
.zopa .zone.none{background:rgba(155,53,53,.15);border-color:var(--red)}
.zopa .mk{position:absolute;top:0;bottom:0;width:2px;background:var(--navy)}
.zopa .mk span{position:absolute;white-space:nowrap;font-size:11.5px;font-weight:700;transform:translateX(-50%);background:#fff;border:1px solid var(--line);padding:1px 5px;border-radius:6px}
.zopa .mk.up span{top:-24px}.zopa .mk.down span{bottom:-24px}
.zopa .mk.sred{background:var(--red)}.zopa .mk.gold{background:var(--gold)}.zopa .mk.green{background:var(--green)}
.hbar{height:14px;border-radius:7px;background:#e3eaf2;overflow:hidden}.hbar span{display:block;height:100%;background:var(--navy)}
.verdict{padding:14px 16px;border-radius:12px;margin:12px 0;border:1px solid var(--line)}
.verdict.good{background:var(--green-bg);border-color:var(--green-line)}.verdict.bad{background:var(--red-bg);border-color:var(--red-line)}.verdict.mid{background:var(--gold-bg);border-color:var(--gold-line)}
/* Package builder */
.vargrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.varcard{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:#fbfdff}
.varcard h4{margin:0 0 6px;font-size:15px;color:var(--navy)}
.varcard label{display:flex;gap:8px;font-size:14px;margin:5px 0;cursor:pointer;align-items:flex-start}.varcard input{margin-top:4px}
.valtag{font-size:11.5px;font-weight:700;padding:1px 6px;border-radius:6px;margin-left:4px;white-space:nowrap}
.valtag.me{background:#e8eff8;color:var(--navy)}.valtag.sel{background:var(--gold-bg);color:#7a4f0f}
/* Sequencer */
.seqlist{list-style:none;padding:0;margin:0}
.seqlist li{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:11px;padding:9px 12px;margin:7px 0;background:#fff}
.seqlist li .pos{font-weight:900;color:var(--gold);width:22px}
.seqlist li .txt{flex:1}
.seqlist li.ok{border-color:var(--green);background:var(--green-bg)}.seqlist li.off{border-color:var(--gold-line);background:var(--gold-bg)}
.seqlist button{appearance:none;border:1px solid #c5d3e3;background:#f8fafc;border-radius:8px;width:34px;height:32px;cursor:pointer;font-size:15px}
/* Flip cards */
.flipgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.flip{appearance:none;border:none;background:none;padding:0;perspective:900px;height:200px;cursor:pointer;font:inherit;text-align:left}
.flip{display:block;width:100%}
.flip .fi{display:block;position:relative;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d}
.flip.on .fi{transform:rotateY(180deg)}
.flip .ff,.flip .fb{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:14px;padding:16px;display:flex;flex-direction:column;justify-content:center;border:1px solid var(--line)}
.flip .ff{background:linear-gradient(135deg,var(--navy2),var(--navy));color:#fff}
.flip .ff b{font-size:28px;color:#f0c879}.flip .ff span{font-size:14px;color:#d8e3f0}
.flip .fb{background:#fff;transform:rotateY(180deg);font-size:14.5px;font-weight:600;color:var(--ink)}
.flip .ff span,.flip .ff b{display:block}
.flip .fb small{display:block;margin-top:8px;font-weight:500;color:var(--muted)}
/* Ladder */
.ladder{display:flex;flex-direction:column-reverse;gap:6px;max-width:640px}
.ladder button{appearance:none;font:inherit;text-align:left;border:1px solid #c5d3e3;border-radius:10px;padding:10px 14px;background:#fff;cursor:pointer;display:flex;gap:10px;align-items:center}
.ladder button .rung{font-weight:900;color:var(--gold);width:20px}
.ladder button.active{background:#e8eff8;border-color:var(--navy)}
.ladderout{min-height:80px}
/* Prev/next & mark complete */
.pager{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:6px 0 18px}
.pager a{flex:1;min-width:200px;display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;text-decoration:none;color:var(--ink)}
.pager a:hover{border-color:#8ca7c3}.pager a small{display:block;color:var(--muted);font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.pager a.next{text-align:right}
.completebar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
/* Footer */
.footer{border-top:1px solid var(--line);background:#fff;margin-top:20px}
.footer .inner{max-width:1280px;margin:0 auto;padding:20px 18px;font-size:13px;color:var(--muted);line-height:1.7;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
/* Simulation (ported from lab v3) */
.sim .choices{display:grid;gap:10px;margin-top:14px}
.sim .choices button.primary{background:var(--navy);color:#fff;border-color:var(--navy);text-align:center;font-weight:800}
.analysis{padding:13px 16px;border-radius:12px;background:#fff7e7;border:1px solid var(--gold-line);margin:0 0 16px;line-height:1.5}
.analysis.good{background:var(--green-bg);border-color:var(--green-line)}.analysis.warn{background:var(--red-bg);border-color:var(--red-line)}
.jlink{display:block;margin-top:8px;padding-top:8px;border-top:1px dashed rgba(0,0,0,.15);font-size:13px;color:var(--navy)}.jlink b{color:var(--gold)}
.prepgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:10px}.prepcol{border:1px solid var(--line);border-radius:14px;padding:12px;background:#fbfdff}
.prepcol h3{margin:0 0 8px;font-size:14px;letter-spacing:.06em;text-transform:uppercase}
.prepcol label{display:flex;gap:8px;align-items:flex-start;font-size:14px;margin:8px 0;line-height:1.35;cursor:pointer}.prepcol input{margin-top:3px;width:16px;height:16px;flex:none}
.scoreline{display:flex;justify-content:space-between;gap:12px;align-items:center}.scorebig{font-size:42px;font-weight:850;color:var(--navy)}
.simprog{height:8px;background:#e7edf4;border-radius:999px;overflow:hidden;margin:14px 0 4px}.simprog div{height:100%;width:0;background:var(--navy);transition:.3s}
/* Log entries */
.logentry{border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin:10px 0;background:#fbfdff}
.logentry pre{white-space:pre-wrap;font-family:inherit;margin:6px 0 0;font-size:14px}
/* Print sheet */
.printsheet{display:none}
.printsheet.show{display:block}
.sheet{border:2px solid var(--navy);border-radius:12px;padding:18px}
.sheet h2{margin-top:0}
.sheet table td:first-child{width:32%;font-weight:700}
.hidden{display:none!important}
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:var(--navy2);color:#fff;padding:10px 16px;border-radius:10px;font-size:14px;z-index:99;opacity:0;transition:.3s;pointer-events:none}.toast.show{opacity:1}
/* Responsive */
@media(max-width:980px){.layout{grid-template-columns:minmax(0,1fr)}.sidebar{position:static;max-height:none;order:2}.sidebar ol{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}}
@media(max-width:760px){.navtoggle{display:block}.topnav{display:none;width:100%;flex-direction:column}.topnav.open{display:flex}
h1{font-size:27px}.card,.hero{padding:18px}.grid2,.grid3,.vargrid,.prepgrid{grid-template-columns:1fr}.citem{grid-template-columns:1fr}.cbtns{justify-content:flex-start}.layout{padding:14px 10px}.scorebig{font-size:32px}table{font-size:13px}}
/* Print */
@media print{
 body{background:#fff;font-size:12pt}
 .topbar,.sidebar,.footer,.pager,.completebar,.btnrow,.noprint,.navtoggle,.skip{display:none!important}
 .layout{display:block;padding:0}
 .card,.hero,.rulebox{box-shadow:none;border:1px solid #999;break-inside:avoid}
 .rulebox{background:#fff;color:#000}.rulebox .eyebrow{color:#000}
 body.printing-sheet *{visibility:hidden}
 body.printing-sheet .printsheet,body.printing-sheet .printsheet *{visibility:visible}
 body.printing-sheet .printsheet{display:block!important;position:absolute;left:0;top:0;width:100%}
 a{color:#000;text-decoration:none}
}
.zopa .mk.down2 span{bottom:-46px}.zopa .mk.down3 span{bottom:-68px}.zopa .mk.up2 span{top:-46px}
.zopa{margin-top:56px;margin-bottom:84px}
.calcgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
@media(max-width:760px){.calcgrid{grid-template-columns:1fr}}
.fblist{list-style:none;padding:0;margin:8px 0}.fblist li{padding:9px 12px;border-radius:10px;margin:6px 0;border:1px solid var(--line)}
.fblist li.good{background:var(--green-bg);border-color:var(--green-line)}.fblist li.bad{background:var(--red-bg);border-color:var(--red-line)}.fblist li.mid{background:var(--gold-bg);border-color:var(--gold-line)}
.sim .grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.sim select{width:auto}
.sim .stat .small{display:block}
@media(max-width:760px){.sim .grid{grid-template-columns:1fr}}