/* IB Interview Prep — application stylesheet.
   Flat professional dark theme. All colors flow from the custom properties
   below; module accent colors live in content/modules.js (hex field). */

:root{
  --page:#0b0e13; --page-2:#10141b;
  --surface:#141922; --surface2:#1a2029; --surface3:#212936;
  --ink:#e9edf3; --ink2:#a6b0bf; --muted:#717d90;
  --grid:#232b37; --baseline:#39445a;
  --ring:rgba(255,255,255,.07); --ring2:rgba(255,255,255,.13);
  --brand:#37b678; --brand2:#54cd92; --brand-ink:#08130d; --brand-deep:#2b9a64;
  --gold:#d9a441; --gold2:#e8c078; --gold-ink:#241804;
  --blue:#7d97cf; --aqua:#56ab9d; --yellow:#c9a45c; --green:#63a97e;
  --violet:#9d92cf; --red:#c47f7f; --magenta:#b784a4; --orange:#c08a6b;
  --good:#37b678; --warning:#d9a441; --serious:#c08a6b; --critical:#d16964;
  --f-disp:'Inter',system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-body:'Inter',system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,monospace;
  --radius:12px; --radius-sm:9px;
  --shadow:0 1px 2px rgba(0,0,0,.25),0 10px 28px -18px rgba(0,0,0,.5);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--page);color:var(--ink);font-family:var(--f-body);font-size:14.5px;line-height:1.6;letter-spacing:-.006em;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;position:relative;min-height:100vh}
body::before{content:"";position:fixed;inset:0;z-index:-1;background:radial-gradient(1100px 420px at 50% -12%,rgba(93,120,160,.07),transparent 65%),var(--page)}
::selection{background:rgba(55,182,120,.25);color:#fff}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-thumb{background:var(--surface3);border-radius:99px;border:3px solid transparent;background-clip:padding-box}
::-webkit-scrollbar-thumb:hover{background:#303a4a;background-clip:padding-box}

.wrap{max-width:1080px;margin:0 auto;padding:0 22px 96px}

/* ===== ICONS ===== */
svg.ic{display:inline-block;vertical-align:-2.5px;flex:none}
.big-ic{width:52px;height:52px;border-radius:14px;background:var(--surface2);border:1px solid var(--ring);display:grid;place-items:center;margin:0 auto 12px}

/* ===== HEADER ===== */
header.top{position:sticky;top:0;z-index:50;background:rgba(11,14,19,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--ring)}
.top-inner{max-width:1080px;margin:0 auto;padding:12px 22px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{width:30px;height:30px;border-radius:8px;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;flex:none}
.brand-mark svg{display:block}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-weight:700;font-size:15px;letter-spacing:-.01em}
.brand-name .accent{color:var(--brand2)}
.brand-txt small{font-weight:500;color:var(--muted);font-size:11px;margin-top:2px}
.top-spacer{flex:1}
.chip{display:inline-flex;align-items:center;gap:7px;background:var(--surface);border:1px solid var(--ring);border-radius:999px;padding:5px 12px;font-size:12px;color:var(--ink2);font-weight:500}
.chip b{color:var(--ink);font-family:var(--f-mono);font-weight:600;font-size:12px;letter-spacing:-.02em}
.chip .dot{width:7px;height:7px;border-radius:50%}
#chip-xp b{color:var(--gold2)}
#chip-streak{color:var(--ink2)}

/* ===== TABS ===== */
nav.tabs{display:flex;gap:20px;max-width:1080px;margin:0 auto;padding:2px 22px 0;overflow-x:auto;scrollbar-width:none}
nav.tabs::-webkit-scrollbar{display:none}
nav.tabs button{appearance:none;border:none;border-bottom:2px solid transparent;background:transparent;color:var(--muted);font:inherit;font-weight:500;font-size:13px;padding:7px 1px 10px;border-radius:0;cursor:pointer;white-space:nowrap;transition:color .15s,border-color .15s;letter-spacing:-.005em}
nav.tabs button:hover{color:var(--ink)}
nav.tabs button.on{color:var(--ink);font-weight:600;border-bottom-color:var(--brand)}

/* ===== TYPE ===== */
h1{font-family:var(--f-disp);font-size:21px;margin:30px 0 5px;font-weight:700;letter-spacing:-.02em}
h2{font-family:var(--f-disp);font-size:15px;margin:26px 0 11px;font-weight:600;letter-spacing:-.012em}
.sub{color:var(--muted);font-size:13px;margin-bottom:18px;max-width:76ch}
.sub b{color:var(--ink2)}

/* ===== CARDS / GRID ===== */
.card{background:var(--surface);border:1px solid var(--ring);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);position:relative}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:1fr 1fr}
.g3{grid-template-columns:1fr 1fr 1fr}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:840px){.g2,.g3,.g4{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.g2,.g3,.g4{grid-template-columns:1fr}}

.tile{background:var(--surface);border:1px solid var(--ring);border-radius:var(--radius);padding:15px 17px}
.tile .k{font-family:var(--f-mono);font-size:10px;letter-spacing:.8px;text-transform:uppercase;color:var(--muted);margin-bottom:6px;font-weight:600}
.tile .v{font-family:var(--f-disp);font-size:24px;font-weight:700;line-height:1.1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.tile .s{font-size:11.5px;color:var(--muted);margin-top:4px}

/* ===== BUTTONS ===== */
.btn{appearance:none;border:1px solid var(--ring2);background:var(--surface2);color:var(--ink);font:inherit;font-weight:600;font-size:13px;padding:8px 15px;border-radius:8px;cursor:pointer;transition:background .14s,border-color .14s,color .14s;letter-spacing:-.005em}
.btn:hover{background:var(--surface3)}
.btn.primary{background:var(--brand);border-color:transparent;color:var(--brand-ink)}
.btn.primary:hover{background:var(--brand2)}
.btn.gold{background:var(--gold);border-color:transparent;color:var(--gold-ink)}
.btn.gold:hover{background:var(--gold2)}
.btn.ghost{background:transparent;border-color:var(--ring)}
.btn.ghost:hover{background:rgba(255,255,255,.04)}
.btn.small{padding:5px 11px;font-size:12px;border-radius:7px}
.btn.good{background:var(--brand);border-color:transparent;color:var(--brand-ink)}
.btn.bad{background:transparent;border-color:rgba(209,105,100,.5);color:var(--red)}
.btn.bad:hover{background:rgba(209,105,100,.1)}
.btn:disabled{opacity:.4;cursor:default}

/* ===== BARS ===== */
.bar{height:6px;background:var(--page-2);border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;transition:width .6s cubic-bezier(.2,.8,.2,1)}

/* ===== MODULE ROWS ===== */
.mrow{display:flex;align-items:center;gap:14px;padding:13px 0;border-bottom:1px solid var(--grid)}
.mrow:last-child{border-bottom:none}
.mdot{width:10px;height:10px;border-radius:3px;flex:none;display:inline-block;vertical-align:-1px}
.mname{font-weight:600;font-size:13.5px;letter-spacing:-.008em}
.mmeta{font-size:11.5px;color:var(--muted);font-variant-numeric:tabular-nums;font-family:var(--f-mono);font-weight:500}
.mbar{flex:1;min-width:80px}
.mpct{width:46px;text-align:right;font-weight:600;font-size:13px;font-variant-numeric:tabular-nums;font-family:var(--f-mono)}
.mrow.locked .mname,.mrow.locked .mmeta{opacity:.5}

/* ===== BANNERS ===== */
.banner{border-radius:var(--radius);padding:17px 20px;margin:16px 0;border:1px solid var(--ring);border-left-width:3px;background:var(--surface);position:relative}
.banner h3{font-family:var(--f-disp);font-size:14px;margin-bottom:3px;font-weight:600;letter-spacing:-.01em}
.banner p{color:var(--ink2);font-size:13px}
.banner.ready{border-left-color:var(--brand);background:linear-gradient(90deg,rgba(55,182,120,.06),var(--surface) 55%)}
.banner.notready{border-left-color:var(--baseline)}
.banner.daily{border-left-color:var(--gold);background:linear-gradient(90deg,rgba(217,164,65,.05),var(--surface) 55%)}

/* ===== QUIZ ===== */
.qcard{max-width:740px;margin:0 auto}
.qmeta{display:flex;gap:8px;align-items:center;margin-bottom:16px;flex-wrap:wrap}
.tag{font-family:var(--f-mono);font-size:10px;font-weight:600;letter-spacing:.5px;text-transform:uppercase;padding:3px 10px;border-radius:99px;border:1px solid var(--ring2);color:var(--ink2);background:var(--surface2)}
.tag.combo{border-color:rgba(217,164,65,.45);color:var(--gold2);background:rgba(217,164,65,.08)}
.qtext{font-family:var(--f-disp);font-size:18px;font-weight:600;line-height:1.45;margin-bottom:20px;letter-spacing:-.015em}
.opt{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;background:var(--surface);border:1px solid var(--ring);border-radius:10px;padding:13px 15px;margin-bottom:9px;color:var(--ink);font:inherit;font-size:14px;cursor:pointer;transition:background .13s,border-color .13s}
.opt:hover:not(:disabled){border-color:var(--ring2);background:var(--surface2)}
.opt .key{flex:none;width:22px;height:22px;border-radius:6px;background:var(--page-2);border:1px solid var(--ring2);display:grid;place-items:center;font-size:11px;font-weight:600;color:var(--muted);font-family:var(--f-mono)}
.opt.correct{border-color:rgba(55,182,120,.55);background:rgba(55,182,120,.08)}
.opt.correct .key{background:var(--brand);color:var(--brand-ink);border-color:transparent}
.opt.wrong{border-color:rgba(209,105,100,.55);background:rgba(209,105,100,.08)}
.opt.wrong .key{background:var(--critical);color:#fff;border-color:transparent}
.opt.dim{opacity:.45}
.opt:disabled{cursor:default}
.expl{background:var(--surface);border:1px solid var(--ring);border-left:3px solid var(--blue);border-radius:0 10px 10px 0;padding:13px 16px;font-size:13.5px;color:var(--ink2);margin:15px 0}
.expl b{color:var(--ink)}
.numin{display:flex;gap:10px;margin-bottom:10px}
.numin input{flex:1;max-width:240px;background:var(--page-2);border:1px solid var(--ring2);border-radius:9px;color:var(--ink);font:inherit;font-size:15px;padding:11px 14px;font-variant-numeric:tabular-nums;font-family:var(--f-mono)}
.numin input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(55,182,120,.15)}
.model{background:var(--surface);border:1px solid var(--ring);border-radius:10px;padding:16px 18px;font-size:13.5px;color:var(--ink2);margin:15px 0}
.model b{color:var(--ink)}
.model ul{margin:8px 0 8px 20px}
.model li{margin:5px 0}
.selfgrade{display:flex;gap:9px;flex-wrap:wrap;margin-top:12px}
.timer{font-family:var(--f-mono);font-variant-numeric:tabular-nums;font-weight:600;font-size:15px;color:var(--ink)}
.timer.low{color:var(--critical);animation:pulse2 1s ease-in-out infinite}
@keyframes pulse2{50%{opacity:.55}}

/* ===== LESSONS ===== */
.lesson-sec{border:1px solid var(--ring);border-radius:var(--radius);margin-bottom:10px;overflow:hidden;background:var(--surface);transition:border-color .15s}
.lesson-sec.open{border-color:var(--ring2)}
.lesson-head{display:flex;align-items:center;gap:12px;padding:15px 18px;cursor:pointer;user-select:none;transition:background .13s}
.lesson-head:hover{background:var(--surface2)}
.lesson-head .tt{font-weight:600;font-size:13.5px;flex:1;letter-spacing:-.008em}
.lesson-head .done{font-size:11px;color:var(--good);font-weight:600;font-family:var(--f-mono)}
.lesson-body{display:none;padding:4px 22px 20px;color:var(--ink2);font-size:14px}
.lesson-sec.open .lesson-body{display:block;animation:fadeIn .25s ease}
.lesson-body h4{color:var(--ink);font-family:var(--f-disp);font-size:13.5px;margin:18px 0 6px;font-weight:600}
.lesson-body p{margin:9px 0}
.lesson-body ul,.lesson-body ol{margin:9px 0 9px 22px}
.lesson-body li{margin:5px 0}
.lesson-body b{color:var(--ink)}
.callout{border-radius:10px;padding:12px 15px;margin:14px 0;font-size:13px;border:1px solid}
.callout.ask{background:rgba(125,151,207,.06);border-color:rgba(125,151,207,.3)}
.callout.trap{background:rgba(192,138,107,.06);border-color:rgba(192,138,107,.3)}
.callout .cl{font-family:var(--f-mono);font-size:10px;font-weight:600;letter-spacing:.7px;text-transform:uppercase;display:block;margin-bottom:4px}
.callout.ask .cl{color:var(--blue)}
.callout.trap .cl{color:var(--serious)}
table.tbl{width:100%;border-collapse:collapse;font-size:13px;margin:11px 0;font-variant-numeric:tabular-nums}
table.tbl th{text-align:left;color:var(--muted);font-weight:600;font-size:10.5px;padding:8px 10px;border-bottom:1px solid var(--baseline);font-family:var(--f-mono);text-transform:uppercase;letter-spacing:.5px}
table.tbl td{padding:8px 10px;border-bottom:1px solid var(--grid);color:var(--ink2)}
table.tbl td:first-child{color:var(--ink)}

/* ===== MODALS ===== */
.modal-bg{position:fixed;inset:0;background:rgba(6,8,12,.7);backdrop-filter:blur(5px);z-index:100;display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .2s ease}
.modal{background:var(--surface2);border:1px solid var(--ring2);border-radius:16px;padding:34px;max-width:560px;text-align:center;box-shadow:0 30px 70px -25px rgba(0,0,0,.7);animation:modalPop .28s cubic-bezier(.2,.9,.3,1.08)}
.modal h2{margin-top:0;font-size:18px}
@keyframes modalPop{from{opacity:0;transform:scale(.96) translateY(10px)}to{opacity:1;transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.footer-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}

/* ===== MODULE CARDS ===== */
.mcard{cursor:pointer;transition:border-color .15s,transform .15s}
.mcard:hover{border-color:var(--ring2);transform:translateY(-1px)}
.mcard.locked{opacity:.6}
.mcard.locked:hover{transform:none}
.mcard b{font-family:var(--f-disp);font-weight:600;letter-spacing:-.008em}

.kbd{display:inline-block;background:var(--page-2);border:1px solid var(--ring2);border-bottom-width:2px;border-radius:5px;padding:0 6px;font-size:11px;color:var(--ink2);font-family:var(--f-mono)}
.crumb{color:var(--muted);font-size:12.5px;margin:24px 0 0;cursor:pointer;font-weight:500;transition:color .13s;display:inline-block}
.crumb:hover{color:var(--ink)}
canvas#confetti{position:fixed;inset:0;pointer-events:none;z-index:200}
.hero{display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center}
@media(max-width:700px){.hero{grid-template-columns:1fr;text-align:center}.hero .ringbox{margin:0 auto}}
.status-label{font-family:var(--f-disp);font-size:12px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase}
svg text{font-family:'Inter',system-ui,sans-serif}

/* ===== PROFILE FORM ===== */
.pform{display:grid;grid-template-columns:1fr 1fr;gap:13px;text-align:left;margin-top:18px}
.pform label{font-family:var(--f-mono);font-size:9.5px;letter-spacing:.7px;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:5px;font-weight:600}
.pform input{width:100%;background:var(--page-2);border:1px solid var(--ring);border-radius:8px;color:var(--ink);font:inherit;font-size:13px;padding:9px 11px}
.pform input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(55,182,120,.13)}
.pform .full{grid-column:1/-1}
@media(max-width:560px){.pform{grid-template-columns:1fr}}
.modal.wide{max-width:660px;text-align:left;max-height:88vh;overflow-y:auto}

/* ===== CHEAT SHEET ===== */
.sheet-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:840px){.sheet-grid{grid-template-columns:1fr}}
.sheet-card{background:var(--surface);border:1px solid var(--ring);border-radius:var(--radius);padding:16px 18px;font-size:12.5px;color:var(--ink2)}
.sheet-card h3{font-family:var(--f-disp);font-size:12.5px;color:var(--ink);margin-bottom:9px;letter-spacing:0;font-weight:600}
.sheet-card .fm{background:var(--page-2);border:1px solid var(--grid);border-radius:8px;padding:9px 11px;margin:8px 0;font-family:var(--f-mono);font-size:11.5px;color:var(--brand2);overflow-x:auto}
.sheet-card ul{margin:6px 0 6px 18px}
.sheet-card li{margin:4px 0}
.sheet-card b{color:var(--ink)}
@media print{
  body{background:#fff;color:#111}
  body::before{display:none}
  header.top,.footer-actions,.no-print,canvas#confetti{display:none!important}
  .wrap{max-width:100%;padding:0}
  h1,.sub{color:#000}
  .sheet-grid{grid-template-columns:1fr 1fr}
  .sheet-card{background:#fff;border-color:#bbb;color:#222;break-inside:avoid;box-shadow:none}
  .sheet-card h3{color:#000}
  .sheet-card .fm{background:#f4f4f4;color:#000;border-color:#ccc}
}

/* ===== DEMO BANNER ===== */
.demo-banner{background:var(--surface);border:1px solid var(--ring);border-radius:10px;padding:10px 15px;margin:16px 0 0;font-size:12.5px;color:var(--muted)}
.demo-banner b{color:var(--ink2)}

/* ===== TOASTS ===== */
#toasts{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);z-index:300;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none}
.toast{background:var(--surface2);border:1px solid var(--ring2);border-radius:10px;padding:9px 18px;font-weight:600;font-size:13px;color:var(--ink);box-shadow:0 12px 30px -12px rgba(0,0,0,.6);letter-spacing:-.005em;animation:toastin .28s cubic-bezier(.2,.9,.3,1.1),toastout .4s ease 2.6s forwards}
.toast.ach{border-color:rgba(217,164,65,.4)}
.toast b{color:var(--gold2)}
@keyframes toastin{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes toastout{to{opacity:0;transform:translateY(-10px)}}

/* ===== ACHIEVEMENTS ===== */
.ach-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:10px;margin-top:10px}
.ach{background:var(--surface2);border:1px solid var(--ring);border-radius:11px;padding:13px 9px;text-align:center;opacity:.38;filter:grayscale(.9);transition:opacity .15s}
.ach.got{opacity:1;filter:none;border-color:rgba(217,164,65,.35);background:var(--surface2)}
.ach .ai{font-size:21px;display:block}
.ach .an{font-family:var(--f-disp);font-weight:600;font-size:12px;display:block;margin-top:5px;letter-spacing:-.008em}
.ach .ad{font-size:9.5px;color:var(--muted);display:block;margin-top:3px;font-family:var(--f-mono)}

/* ===== GATE / AUTH ===== */
.gatebox{max-width:430px;margin:64px auto 0}
.gatebox .card{padding:30px}
.gatebox h1{margin:12px 0 4px;font-size:22px}
.gatebox .tag-line{color:var(--muted);font-size:13px;margin-bottom:24px}
.gatebox input{width:100%;background:var(--page-2);border:1px solid var(--ring);border-radius:9px;color:var(--ink);font:inherit;font-size:14px;padding:12px 14px;margin-bottom:10px}
.gatebox input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(55,182,120,.13)}
.gatebox .btn{width:100%;padding:12px;margin-bottom:9px}
.gate-err{color:var(--red);font-size:12.5px;min-height:18px;margin:4px 0 8px}
.gate-note{color:var(--good);font-size:12.5px;min-height:18px;margin:4px 0 8px}
.gate-alt{display:flex;gap:9px}
.gate-alt .btn{flex:1}
.gate-switch{text-align:center;color:var(--muted);font-size:12.5px;margin-top:14px;cursor:pointer}
.gate-switch:hover{color:var(--ink2)}
.gate-switch b{color:var(--brand2)}
.paybox{max-width:520px;margin:52px auto 0;text-align:center}
.paybox .price{font-family:var(--f-disp);font-size:38px;font-weight:700;margin:12px 0 2px;letter-spacing:-.025em}
.paybox .price small{font-size:13px;color:var(--muted);font-weight:500;font-family:var(--f-body);letter-spacing:0}
.paybox ul{text-align:left;margin:22px auto;max-width:390px;color:var(--ink2);font-size:13.5px;list-style:none}
.paybox li{margin:9px 0;padding-left:26px;position:relative}
.paybox li:before{content:"✓";position:absolute;left:0;color:var(--brand2);font-weight:700}
.price{font-family:var(--f-disp)}

/* ===== INTERVIEW COACH CHAT ===== */
#chatRoot{position:fixed;right:22px;bottom:22px;z-index:80;display:flex;flex-direction:column;align-items:flex-end;gap:10px;pointer-events:none}
.chat-fab{pointer-events:auto;width:48px;height:48px;border-radius:12px;border:1px solid var(--ring2);background:var(--surface2);color:var(--ink);display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow);position:relative;transition:background .14s,border-color .14s}
.chat-fab:hover{background:var(--surface3);border-color:var(--baseline)}
.chat-fab-lock{position:absolute;right:-4px;top:-4px;width:18px;height:18px;border-radius:6px;background:var(--surface);border:1px solid var(--ring2);display:grid;place-items:center;color:var(--muted)}
.chat-panel{pointer-events:auto;width:min(360px,calc(100vw - 32px));height:min(480px,calc(100vh - 120px));background:var(--surface);border:1px solid var(--ring2);border-radius:14px;box-shadow:0 18px 48px -20px rgba(0,0,0,.7);display:flex;flex-direction:column;overflow:hidden}
.chat-panel[hidden]{display:none!important}
.chat-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:14px 14px 12px;border-bottom:1px solid var(--ring);background:var(--surface2)}
.chat-title{font-weight:600;font-size:13.5px;letter-spacing:-.01em}
.chat-sub{font-size:11.5px;color:var(--muted);margin-top:2px;font-family:var(--f-mono)}
.chat-x{appearance:none;border:none;background:transparent;color:var(--muted);cursor:pointer;padding:4px;border-radius:6px}
.chat-x:hover{color:var(--ink);background:rgba(255,255,255,.04)}
.chat-body{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}
.chat-empty,.chat-muted{color:var(--muted);font-size:13px;line-height:1.5}
.chat-locked{text-align:center;padding:18px 8px}
.chat-locked p{margin:6px 0;font-size:13.5px;color:var(--ink2)}
.chat-locked .btn{margin-top:12px}
.chat-msg{max-width:92%;padding:9px 12px;border-radius:10px;font-size:13px;line-height:1.5;white-space:pre-wrap;word-break:break-word}
.chat-msg.me{align-self:flex-end;background:var(--brand);color:var(--brand-ink);border-bottom-right-radius:4px}
.chat-msg.bot{align-self:flex-start;background:var(--surface2);border:1px solid var(--ring);color:var(--ink2);border-bottom-left-radius:4px}
.chat-msg.thinking{opacity:.55;font-family:var(--f-mono)}
.chat-form{display:flex;gap:8px;padding:12px;border-top:1px solid var(--ring);background:var(--surface2)}
.chat-form input{flex:1;min-width:0;background:var(--page-2);border:1px solid var(--ring);border-radius:8px;color:var(--ink);font:inherit;font-size:13px;padding:9px 11px}
.chat-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(55,182,120,.13)}
@media(max-width:560px){
  #chatRoot{right:14px;bottom:14px}
  .chat-panel{height:min(520px,calc(100vh - 90px))}
}
@media print{#chatRoot{display:none!important}}

/* ===== INTERVIEW COACH (chat) ===== */
#chatRoot{position:fixed;right:20px;bottom:20px;z-index:80}
.chat-fab{width:48px;height:48px;border-radius:12px;border:1px solid var(--ring2);background:var(--surface2);color:var(--ink);display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow);position:relative;transition:background .14s,border-color .14s}
.chat-fab:hover{background:var(--surface3);border-color:var(--baseline)}
.chat-fab-lock{position:absolute;right:-3px;top:-3px;width:18px;height:18px;border-radius:50%;background:var(--surface);border:1px solid var(--ring2);display:grid;place-items:center;color:var(--muted)}
.chat-panel{position:absolute;right:0;bottom:58px;width:min(360px,calc(100vw - 32px));height:min(480px,calc(100vh - 100px));background:var(--surface);border:1px solid var(--ring2);border-radius:14px;box-shadow:0 18px 50px -20px rgba(0,0,0,.7);display:flex;flex-direction:column;overflow:hidden}
.chat-panel[hidden]{display:none!important}
.chat-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-bottom:1px solid var(--ring)}
.chat-title{font-weight:600;font-size:13.5px;letter-spacing:-.01em}
.chat-sub{font-size:11px;color:var(--muted);margin-top:2px;font-family:var(--f-mono)}
.chat-x{appearance:none;border:none;background:transparent;color:var(--muted);cursor:pointer;padding:4px;border-radius:6px}
.chat-x:hover{color:var(--ink);background:var(--surface2)}
.chat-body{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}
.chat-empty,.chat-locked{color:var(--muted);font-size:13px;text-align:center;margin:auto;padding:12px;max-width:280px}
.chat-locked p{margin:6px 0}
.chat-locked .chat-muted{font-size:12.5px;color:var(--muted)}
.chat-locked .btn{margin-top:10px}
.chat-msg{max-width:92%;padding:9px 12px;border-radius:10px;font-size:13px;line-height:1.5;white-space:normal}
.chat-msg.me{align-self:flex-end;background:var(--brand);color:var(--brand-ink);border-bottom-right-radius:4px}
.chat-msg.bot{align-self:flex-start;background:var(--surface2);border:1px solid var(--ring);color:var(--ink2);border-bottom-left-radius:4px}
.chat-msg.thinking{opacity:.55;font-style:italic}
.chat-form{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--ring);background:var(--surface2)}
.chat-form input{flex:1;min-width:0;background:var(--page-2);border:1px solid var(--ring);border-radius:8px;color:var(--ink);font:inherit;font-size:13px;padding:9px 11px}
.chat-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(55,182,120,.13)}
.chat-form .btn{flex:none}
@media(max-width:560px){
  #chatRoot{right:14px;bottom:14px}
  .chat-panel{height:min(420px,calc(100vh - 90px))}
}
@media print{#chatRoot{display:none!important}}