/* ============================================================
   MTN AI Academy — Design System
   Yellow / Black / White / Graphite. Premium, enterprise-grade.
   ============================================================ */
:root{
  color-scheme: light;
  /* Brand */
  --yellow:#FFCC00;
  --yellow-bright:#FFD426;
  --yellow-deep:#E6B200;
  --yellow-ink:#8A6D00;          /* readable yellow-family text on light */
  --black:#0A0A0A;
  --graphite:#161616;
  --graphite-2:#222222;
  --white:#FFFFFF;
  /* Neutrals */
  --bg:#F4F3F0;
  --bg-2:#FBFAF8;
  --surface:#FFFFFF;
  --line:#E7E4DD;
  --line-strong:#D8D4CB;
  --ink:#141414;
  --ink-2:#3A3A38;
  --muted:#6C6A65;
  --muted-2:#94918A;
  /* Status */
  --ok:#1F9D57;
  --ok-soft:#E7F5EC;
  --warn:#C77D00;
  --warn-soft:#FCF2DC;
  --stop:#C4462E;
  --stop-soft:#FBEBE6;
  /* Radius */
  --r-xs:8px; --r-sm:12px; --r:18px; --r-lg:24px; --r-xl:32px; --pill:999px;
  /* Shadow */
  --sh-1:0 1px 2px rgba(10,10,10,.04), 0 2px 8px rgba(10,10,10,.05);
  --sh-2:0 6px 18px rgba(10,10,10,.07), 0 2px 6px rgba(10,10,10,.05);
  --sh-3:0 18px 44px rgba(10,10,10,.14);
  --sh-yellow:0 10px 30px rgba(255,204,0,.35);
  /* Type */
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Helvetica,Arial,sans-serif;
  --fs-display:clamp(2.5rem,6.2vw,4.25rem);
  --fs-h1:clamp(1.9rem,3.6vw,2.9rem);
  --fs-h2:clamp(1.45rem,2.6vw,2.1rem);
  --fs-h3:1.16rem;
  /* Rhythm */
  --nav-w:270px;
  --maxw:1080px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* Reset */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--ink-2);font-size:16px;line-height:1.62;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3,h4{margin:0 0 .45em;color:var(--ink);line-height:1.12;letter-spacing:-.02em;font-weight:800}
h1{font-size:var(--fs-h1)} h2{font-size:var(--fs-h2)} h3{font-size:var(--fs-h3);letter-spacing:-.01em}
p{margin:0 0 .85em}
a{color:inherit}
img{max-width:100%}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--yellow);outline-offset:2px;border-radius:6px}
::selection{background:var(--yellow);color:var(--black)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ============================================================ Layout */
.app{display:grid;grid-template-columns:var(--nav-w) 1fr;min-height:100vh}
.main{min-width:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(18px,4vw,44px)}
.view{display:none}
.view.active{display:block;animation:viewIn .5s var(--ease)}
@keyframes viewIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.section-pad{padding:clamp(30px,5vw,64px) 0}

/* ============================================================ Sidebar nav */
.sidebar{position:sticky;top:0;height:100vh;overflow-y:auto;background:var(--black);color:#EDEBE6;padding:22px 16px;display:flex;flex-direction:column;gap:6px}
.brand{display:flex;align-items:center;gap:11px;padding:6px 8px 14px;text-align:left;background:none;border:none;cursor:pointer;color:inherit;width:100%}
.brand .mark{width:42px;height:42px;border-radius:12px;background:var(--yellow);color:var(--black);font-weight:900;font-size:.82rem;display:flex;align-items:center;justify-content:center;letter-spacing:.02em;box-shadow:var(--sh-yellow)}
.brand .bt{font-weight:800;font-size:1rem;color:#fff;line-height:1.1}
.brand .bt small{display:block;font-weight:600;font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;color:var(--yellow)}
.nav-progress{margin:2px 8px 12px;padding:12px;background:var(--graphite-2);border-radius:var(--r-sm)}
.nav-progress .npr{display:flex;justify-content:space-between;align-items:baseline;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:#B9B6AE;font-weight:700}
.nav-progress .npr b{color:var(--yellow);font-size:1.05rem}
.trackbar{height:7px;background:#000;border-radius:var(--pill);overflow:hidden;margin-top:8px}
.trackbar>span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--yellow),var(--yellow-bright));border-radius:var(--pill);transition:width .8s var(--ease)}
.nav-scroll{flex:1;overflow-y:auto;margin:0 -4px;padding:0 4px}
.nav-group{margin:10px 0 4px}
.nav-group .gt{font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:#7E7B73;font-weight:800;padding:8px 10px 4px}
.navlink{display:flex;align-items:center;gap:11px;width:100%;text-align:left;border:none;background:none;color:#D7D4CD;padding:9px 10px;border-radius:11px;cursor:pointer;font-size:.88rem;font-weight:600;transition:background .18s,color .18s}
.navlink:hover{background:var(--graphite-2);color:#fff}
.navlink.active{background:var(--yellow);color:var(--black);font-weight:800}
.navlink .ni{width:22px;height:22px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-size:.9rem;opacity:.95}
.navlink .lvpill{margin-left:auto;font-size:.62rem;font-weight:800;background:#000;color:#B9B6AE;border-radius:var(--pill);padding:2px 8px}
.navlink.active .lvpill{background:rgba(0,0,0,.16);color:var(--black)}
.navlink .tick{margin-left:auto;color:var(--ok)}
.navlink.active .tick{color:var(--black)}

/* ============================================================ Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:none;border-radius:var(--pill);padding:13px 24px;font-weight:800;font-size:.94rem;cursor:pointer;text-decoration:none;transition:transform .16s var(--ease),box-shadow .16s,background .16s,color .16s;letter-spacing:-.01em}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--yellow);color:var(--black);box-shadow:var(--sh-yellow)}
.btn-primary:hover{background:var(--yellow-bright);transform:translateY(-2px)}
.btn-dark{background:var(--black);color:#fff}
.btn-dark:hover{background:var(--graphite);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--black);background:#fff}
.btn-ghost.on-dark{color:#fff;border-color:rgba(255,255,255,.28)}
.btn-ghost.on-dark:hover{border-color:var(--yellow);color:var(--yellow)}
.btn-sm{padding:9px 16px;font-size:.82rem}
.btn-block{width:100%}

/* ============================================================ Eyebrow + headers */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.72rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--yellow-ink)}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--yellow);border-radius:2px}
.eyebrow.on-dark{color:var(--yellow)}
.eyebrow.on-dark::before{background:var(--yellow)}
.section-head{max-width:64ch;margin-bottom:22px}
.section-head p{color:var(--muted);font-size:1.05rem}

/* ============================================================ Hero */
.hero{background:radial-gradient(120% 130% at 85% -10%,#2a2a2a 0%,var(--black) 46%);color:#fff;border-radius:0 0 var(--r-xl) var(--r-xl);position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;background:radial-gradient(circle,rgba(255,204,0,.22),transparent 62%);pointer-events:none}
.hero-inner{position:relative;padding:clamp(34px,6vw,74px) 0 clamp(30px,5vw,56px)}
.hero h1{font-size:var(--fs-display);color:#fff;max-width:16ch;margin-bottom:.2em}
.hero h1 .hl{color:var(--yellow)}
.hero .promise{font-size:clamp(1.05rem,2vw,1.3rem);color:#D7D4CD;max-width:44ch;margin-bottom:26px}
.hero .tagline{display:inline-flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.hero .chip{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#EDEBE6;border-radius:var(--pill);padding:7px 14px;font-size:.82rem;font-weight:600}
.hero .chip b{color:var(--yellow)}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:26px;align-items:start}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}}

/* Progress ring */
.ringcard{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-lg);padding:22px;backdrop-filter:blur(4px)}
.ringcard .rh{display:flex;align-items:center;gap:16px}
.ring{--p:0;width:96px;height:96px;flex:0 0 auto;border-radius:50%;background:conic-gradient(var(--yellow) calc(var(--p)*1%),#333 0);display:flex;align-items:center;justify-content:center;transition:background .8s var(--ease)}
.ring::before{content:"";position:absolute;width:74px;height:74px;border-radius:50%;background:var(--graphite)}
.ring{position:relative}
.ring b{position:relative;font-size:1.35rem;font-weight:900;color:#fff}
.ringcard .rt{font-weight:800;color:#fff;font-size:1.05rem}
.ringcard .rt small{display:block;color:#ADA9A1;font-weight:600;font-size:.82rem;margin-top:2px}
.ringcard .rmeta{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.stat{flex:1;min-width:80px;background:rgba(0,0,0,.35);border-radius:var(--r-sm);padding:10px 12px}
.stat b{display:block;color:var(--yellow);font-size:1.15rem;font-weight:900;line-height:1}
.stat small{color:#B9B6AE;font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;font-weight:700}

/* Today's mission card (hero) */
.today{margin-top:16px;background:var(--yellow);color:var(--black);border-radius:var(--r-lg);padding:18px 20px;box-shadow:var(--sh-yellow)}
.today .te{font-size:.68rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase;opacity:.72}
.today h3{color:var(--black);margin:4px 0 2px;font-size:1.12rem}
.today p{color:#3a3000;font-size:.9rem;margin:0 0 12px}
.today .btn-dark{width:100%}

/* ============================================================ Pathway map */
.pathway{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:760px){.pathway{grid-template-columns:1fr}}
.levelcard{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s,border-color .2s;overflow:hidden;text-align:left;cursor:pointer;width:100%;display:block}
.levelcard:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--line-strong)}
.levelcard::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--line-strong)}
.levelcard[data-status="current"]::before{background:var(--yellow)}
.levelcard[data-status="completed"]::before{background:var(--ok)}
.levelcard .lc-top{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.lc-num{width:52px;height:52px;flex:0 0 auto;border-radius:16px;background:var(--black);color:var(--yellow);display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:900;line-height:1}
.lc-num small{font-size:.5rem;letter-spacing:.1em;color:#9c9c9c;font-weight:800}
.lc-num b{font-size:1.5rem}
.levelcard[data-status="completed"] .lc-num{background:var(--ok);color:#fff}
.lc-ic{margin-left:auto;font-size:1.5rem;opacity:.9}
.levelcard h3{margin:0 0 2px}
.lc-outcome{color:var(--muted);font-size:.9rem;margin:0 0 14px;min-height:2.6em}
.lc-foot{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.lc-time{font-size:.76rem;color:var(--muted);font-weight:700;display:inline-flex;align-items:center;gap:5px}
.lc-status{margin-left:auto;font-size:.7rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:5px 11px;border-radius:var(--pill)}
.lc-status[data-s="locked"]{background:#EFEDE8;color:var(--muted-2)}
.lc-status[data-s="current"]{background:var(--yellow);color:var(--black)}
.lc-status[data-s="completed"]{background:var(--ok-soft);color:var(--ok)}
.lc-cta{margin-top:14px;width:100%}
.mandatory-flag{position:absolute;top:16px;right:16px;background:var(--black);color:var(--yellow);font-size:.62rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;padding:5px 10px;border-radius:var(--pill)}
.levelcard .lock{position:absolute;inset:0;background:rgba(250,249,246,.55);backdrop-filter:grayscale(.3);display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:var(--muted-2);border-radius:var(--r-lg);opacity:0;pointer-events:none;transition:opacity .2s}
.levelcard[data-status="locked"]{opacity:.9}
.levelcard[data-status="locked"] .lc-num{background:#E7E4DD;color:var(--muted-2)}

/* ============================================================ Level view header */
.levelhero{background:var(--black);color:#fff;border-radius:var(--r-xl);padding:clamp(24px,4vw,40px);position:relative;overflow:hidden;margin-bottom:26px}
.levelhero::after{content:"";position:absolute;right:-80px;bottom:-100px;width:300px;height:300px;background:radial-gradient(circle,rgba(255,204,0,.16),transparent 60%)}
.levelhero .lh-top{display:flex;align-items:center;gap:16px;margin-bottom:16px;position:relative}
.levelhero .lc-num{width:60px;height:60px}
.levelhero h1{color:#fff;margin:0}
.levelhero .lh-outcome{color:#D7D4CD;max-width:56ch;font-size:1.05rem;position:relative;margin:0}
.levelhero .lh-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px;position:relative}
.lh-badge{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:var(--pill);padding:7px 14px;font-size:.8rem;font-weight:700;color:#EDEBE6;display:inline-flex;gap:7px;align-items:center}
.lh-badge b{color:var(--yellow)}

/* ============================================================ Cards */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 24px;box-shadow:var(--sh-1);margin-bottom:16px}
.card.pad-lg{padding:26px 28px}
.grid{display:grid;gap:16px}
.grid.g2{grid-template-columns:1fr 1fr}
.grid.g3{grid-template-columns:repeat(3,1fr)}
@media(max-width:720px){.grid.g2,.grid.g3{grid-template-columns:1fr}}
.card .cardhead{display:flex;align-items:flex-start;gap:12px;margin-bottom:8px}
.card .card-ic{width:40px;height:40px;flex:0 0 auto;border-radius:12px;background:var(--yellow);color:var(--black);display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:800}
.card.concept .card-ic{background:#111;color:var(--yellow)}

/* Four-questions strip */
.fourq{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:18px 0}
@media(max-width:820px){.fourq{grid-template-columns:1fr 1fr}}
@media(max-width:460px){.fourq{grid-template-columns:1fr}}
.q{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);padding:14px 15px}
.q .k{font-size:.66rem;text-transform:uppercase;letter-spacing:.08em;font-weight:800;color:var(--yellow-ink);margin-bottom:5px}
.q p{margin:0;font-size:.88rem;color:var(--ink-2)}

/* Tags / pills */
.tag{display:inline-flex;align-items:center;gap:6px;font-size:.68rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase;padding:5px 11px;border-radius:var(--pill);background:var(--bg-2);color:var(--ink-2);border:1px solid var(--line)}
.tag.solid{background:var(--black);color:#fff;border-color:var(--black)}
.tag.yellow{background:var(--yellow);color:var(--black);border-color:var(--yellow)}
.tag.ok{background:var(--ok-soft);color:var(--ok);border-color:#bfe6cd}
.tag.warn{background:var(--warn-soft);color:var(--warn);border-color:#f0dfb0}
.tag.stop{background:var(--stop-soft);color:var(--stop);border-color:#f2ccc1}

/* Lists */
ul.clean{margin:6px 0;padding-left:0;list-style:none}
ul.clean li{position:relative;padding:5px 0 5px 26px;font-size:.92rem;color:var(--ink-2)}
ul.clean li::before{content:"";position:absolute;left:4px;top:12px;width:8px;height:8px;border-radius:3px;background:var(--yellow)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:8px 18px;font-size:.92rem;margin:6px 0}
.kv b{color:var(--ink)}

/* Steps */
ol.steps{counter-reset:s;list-style:none;padding:0;margin:6px 0}
ol.steps li{counter-increment:s;position:relative;padding:10px 0 10px 44px;border-bottom:1px dashed var(--line);font-size:.94rem;color:var(--ink-2)}
ol.steps li:last-child{border-bottom:none}
ol.steps li::before{content:counter(s);position:absolute;left:0;top:8px;width:28px;height:28px;background:var(--black);color:var(--yellow);border-radius:9px;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:.82rem}

/* ============================================================ Safety notice */
.notice{border-radius:var(--r);padding:15px 18px;margin:14px 0;display:flex;gap:13px;align-items:flex-start;border:1px solid}
.notice.show{display:flex!important}
.notice .ni{flex:0 0 auto;font-size:1.1rem;line-height:1.3}
.notice .nt{font-weight:800;font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:3px}
.notice.info{background:var(--warn-soft);border-color:#f0dfb0}
.notice.info .nt{color:var(--warn)}
.notice.safe{background:var(--ok-soft);border-color:#bfe6cd}
.notice.safe .nt{color:var(--ok)}
.notice.stop{background:var(--stop-soft);border-color:#f2ccc1}
.notice.stop .nt{color:var(--stop)}
.notice p{margin:0;font-size:.9rem;color:var(--ink-2)}

/* Callout */
.callout{border-left:4px solid var(--yellow);background:linear-gradient(90deg,#FFFBEA,#fff);padding:14px 18px;border-radius:0 var(--r) var(--r) 0;margin:14px 0}
.callout.dark{background:var(--black);border-radius:var(--r);border-left:none;color:#EDEBE6;padding:18px 20px}
.callout.dark h4,.callout.dark .ct{color:var(--yellow)}
.callout .ct{font-weight:800;font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px;color:var(--ink)}
.callout p{margin:0}
.callout.dark p{color:#D7D4CD}

/* ============================================================ Prompt block */
.prompt{border-radius:var(--r);overflow:hidden;border:1px solid var(--graphite-2);background:#0E0E0E;margin:12px 0;box-shadow:var(--sh-2)}
.prompt .p-head{display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--graphite);border-bottom:1px solid #2a2a2a}
.prompt .p-title{color:#fff;font-weight:800;font-size:.9rem;flex:1;min-width:0}
.prompt .p-tool{font-size:.66rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--black);background:var(--yellow);border-radius:var(--pill);padding:3px 9px;white-space:nowrap}
.prompt .p-when{padding:11px 16px 0;color:#9c9c9c;font-size:.82rem}
.prompt .p-when b{color:#cfccc4}
.prompt pre{margin:0;padding:12px 16px 16px;color:#EDEBE6;font-size:.86rem;line-height:1.6;white-space:pre-wrap;font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace}
.prompt .p-foot{display:flex;align-items:center;gap:10px;padding:0 16px 14px;flex-wrap:wrap}
.copybtn{display:inline-flex;align-items:center;gap:8px;border:none;background:var(--yellow);color:var(--black);font-weight:800;font-size:.82rem;padding:9px 16px;border-radius:var(--pill);cursor:pointer;transition:background .16s,transform .16s}
.copybtn:hover{background:var(--yellow-bright);transform:translateY(-1px)}
.copybtn.copied{background:var(--ok);color:#fff}
.p-safe{font-size:.78rem;color:#9c9c9c;display:inline-flex;gap:7px;align-items:center}
.p-safe b{color:var(--yellow)}
.p-better{margin:0 16px 14px}
.p-better summary{cursor:pointer;color:var(--yellow);font-size:.82rem;font-weight:700;list-style:none}
.p-better summary::-webkit-details-marker{display:none}
.p-better[open] summary{margin-bottom:6px}
.p-better p{color:#b7b4ac;font-size:.84rem;margin:0}

/* ============================================================ Mission */
.mission{display:flex;gap:14px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;margin:12px 0;transition:border-color .2s,background .2s}
.mission .mcheck{flex:0 0 auto;width:26px;height:26px;margin-top:2px;border-radius:8px;border:2px solid var(--line-strong);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;color:transparent;font-size:.9rem;font-weight:900;transition:all .18s var(--ease)}
.mission .mcheck:hover{border-color:var(--yellow-deep)}
.mission.done{background:var(--ok-soft);border-color:#bfe6cd}
.mission.done .mcheck{background:var(--ok);border-color:var(--ok);color:#fff}
.mission .mtime{font-size:.68rem;font-weight:900;text-transform:uppercase;letter-spacing:.06em;color:var(--yellow-ink);display:inline-flex;align-items:center;gap:5px}
.mission .mt{font-weight:800;color:var(--ink);margin:3px 0 2px}
.mission.done .mt{text-decoration:line-through;color:var(--muted)}
.mission p{margin:0;font-size:.86rem;color:var(--muted)}

/* ============================================================ Accordion */
.acc{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin:10px 0;background:var(--surface)}
.acc>button{width:100%;text-align:left;padding:15px 18px;border:none;background:none;font-family:inherit;font-size:.98rem;font-weight:800;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px}
.acc>button:hover{background:var(--bg-2)}
.acc .chev{flex:0 0 auto;transition:transform .25s var(--ease);color:var(--muted)}
.acc.open .chev{transform:rotate(90deg)}
.acc .acc-body{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.acc .acc-inner{padding:0 18px 18px}

/* ============================================================ Tabs */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:4px 0 16px}
.tab{border:1.5px solid var(--line);background:var(--surface);border-radius:var(--pill);padding:8px 16px;font-size:.84rem;font-weight:700;cursor:pointer;font-family:inherit;color:var(--ink-2);transition:all .16s}
.tab:hover{border-color:var(--line-strong)}
.tab.active{background:var(--black);color:#fff;border-color:var(--black)}
.tabpane{display:none}
.tabpane.show{display:block;animation:viewIn .3s var(--ease)}

/* ============================================================ Toolkit dock */
.dock{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:720px){.dock{grid-template-columns:1fr}}
.tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:8px}
.tool:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.tool .tk-ic{width:46px;height:46px;border-radius:14px;background:var(--black);color:var(--yellow);display:flex;align-items:center;justify-content:center;font-size:1.25rem}
.tool h3{margin:6px 0 0}
.tool .tk-desc{color:var(--muted);font-size:.9rem;margin:0}
.tool .tk-when{font-size:.78rem;color:var(--yellow-ink);font-weight:700;margin:2px 0 8px}
.tool .tk-when b{color:var(--ink)}
.tool .tk-launch{margin-top:auto;align-self:flex-start}

/* ============================================================ Badges & achievements */
.badgerow{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px}
.badge{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px 12px;text-align:center;position:relative;transition:transform .2s}
.badge.earned{border-color:var(--yellow-deep);box-shadow:0 6px 18px rgba(255,204,0,.18)}
.badge .bdisc{width:54px;height:54px;margin:0 auto 8px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.4rem;background:#EFEDE8;color:var(--muted-2);filter:grayscale(1);transition:all .3s}
.badge.earned .bdisc{background:radial-gradient(circle at 35% 30%,var(--yellow-bright),var(--yellow-deep));color:var(--black);filter:none;box-shadow:var(--sh-yellow)}
.badge .bn{font-size:.78rem;font-weight:800;color:var(--ink);line-height:1.2}
.badge .bs{font-size:.66rem;color:var(--muted);margin-top:2px}
.badge.earned .bs{color:var(--ok);font-weight:700}

/* Next best action */
.nba{background:var(--black);color:#fff;border-radius:var(--r-lg);padding:22px 24px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;box-shadow:var(--sh-2)}
.nba .nba-ic{width:52px;height:52px;flex:0 0 auto;border-radius:15px;background:var(--yellow);color:var(--black);display:flex;align-items:center;justify-content:center;font-size:1.4rem}
.nba .nba-tx{flex:1;min-width:200px}
.nba .nba-e{font-size:.66rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase;color:var(--yellow)}
.nba .nba-h{font-weight:800;color:#fff;font-size:1.12rem;margin:2px 0 3px}
.nba .nba-h small{display:block;font-weight:500;color:#ADA9A1;font-size:.86rem;margin-top:2px}

/* ============================================================ Quiz */
.quiz .qopt{display:block;width:100%;text-align:left;border:1.5px solid var(--line);background:var(--surface);border-radius:var(--r-sm);padding:13px 16px;margin:8px 0;cursor:pointer;font-family:inherit;font-size:.92rem;color:var(--ink-2);transition:all .16s}
.quiz .qopt:hover{border-color:var(--yellow-deep)}
.quiz .qopt.right{background:var(--ok-soft);border-color:var(--ok);color:var(--ok);font-weight:700}
.quiz .qopt.wrong{background:var(--stop-soft);border-color:var(--stop);color:var(--stop)}
.quiz .qfb{font-size:.88rem;margin-top:10px;color:var(--ink-2);display:none;padding:12px 14px;background:var(--bg-2);border-radius:var(--r-sm)}
.quiz .qfb.show{display:block}

/* ============================================================ Confidence score */
.scoretbl{width:100%;border-collapse:collapse}
.scoretbl td{padding:12px 6px;border-bottom:1px solid var(--line);vertical-align:middle}
.scoretbl td.stmt{font-size:.92rem;color:var(--ink-2)}
.rate{display:flex;gap:5px;justify-content:flex-end}
.rate button{width:34px;height:34px;border:1.5px solid var(--line);background:#fff;border-radius:9px;cursor:pointer;font-family:inherit;font-weight:800;color:var(--muted);font-size:.84rem;transition:all .14s}
.rate button:hover{border-color:var(--yellow-deep)}
.rate button.on{background:var(--yellow);border-color:var(--yellow-deep);color:var(--black)}
.scorebox{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
@media(max-width:560px){.scorebox{grid-template-columns:1fr}}
.scorepill{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);padding:18px;text-align:center}
.scorepill b{display:block;font-size:2.2rem;line-height:1;color:var(--ink);font-weight:900}
.scorepill small{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:.68rem;font-weight:800;margin-top:6px;display:block}

/* ============================================================ Mobile nav */
.topbar,.bottomnav{display:none}
.topbar{position:sticky;top:0;z-index:40;background:var(--black);color:#fff;align-items:center;gap:12px;padding:12px 16px}
.topbar .mark{width:34px;height:34px;border-radius:10px;background:var(--yellow);color:var(--black);font-weight:900;font-size:.66rem;display:flex;align-items:center;justify-content:center}
.topbar .tt{font-weight:800;font-size:.94rem}
.topbar .tt small{display:block;font-size:.58rem;letter-spacing:.12em;text-transform:uppercase;color:var(--yellow);font-weight:700}
.topbar .tprog{margin-left:auto;font-weight:900;color:var(--yellow);font-size:.9rem}
.menu-toggle{background:var(--graphite-2);border:none;color:#fff;width:40px;height:40px;border-radius:11px;font-size:1.2rem;cursor:pointer}
.bottomnav{position:fixed;bottom:0;left:0;right:0;z-index:40;background:rgba(10,10,10,.97);backdrop-filter:blur(8px);border-top:1px solid #262626;justify-content:space-around;padding:8px 6px calc(8px + env(safe-area-inset-bottom))}
.bottomnav button{background:none;border:none;color:#8E8B84;display:flex;flex-direction:column;align-items:center;gap:3px;font-size:.6rem;font-weight:700;cursor:pointer;padding:4px 8px;border-radius:10px;flex:1}
.bottomnav button .bi{font-size:1.15rem}
.bottomnav button.active{color:var(--yellow)}

/* Mobile drawer */
.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:50;opacity:0;pointer-events:none;transition:opacity .25s}
.drawer-overlay.open{opacity:1;pointer-events:auto}

@media(max-width:880px){
  .app{grid-template-columns:1fr}
  .sidebar{position:fixed;top:0;left:0;bottom:0;width:290px;max-width:86vw;z-index:60;transform:translateX(-102%);transition:transform .3s var(--ease);border-radius:0 var(--r-lg) var(--r-lg) 0}
  .sidebar.open{transform:none}
  .topbar{display:flex}
  .bottomnav{display:flex}
  .main{padding-bottom:80px}
  .hero{border-radius:0 0 var(--r-lg) var(--r-lg)}
}

/* ============================================================ Toast / celebration */
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,140%);background:var(--black);color:#fff;border-radius:var(--pill);padding:13px 22px;display:flex;align-items:center;gap:12px;z-index:80;box-shadow:var(--sh-3);font-weight:700;font-size:.92rem;transition:transform .45s var(--ease);max-width:92vw}
.toast.show{transform:translate(-50%,0)}
.toast .ti{width:30px;height:30px;border-radius:50%;background:var(--yellow);color:var(--black);display:flex;align-items:center;justify-content:center;flex:0 0 auto;font-weight:900}
.toast b{color:var(--yellow)}
#confetti{position:fixed;inset:0;pointer-events:none;z-index:70;display:none}

/* Language toggle */
.langtoggle{display:inline-flex;align-items:center;background:#2c2c2c;border:1.5px solid rgba(255,255,255,.22);border-radius:var(--pill);padding:4px;gap:3px}
.langtoggle::before{content:"🌐";font-size:.9rem;padding:0 5px 0 8px;line-height:1}
.langtoggle button{border:none;background:none;color:#EDEBE6;font-weight:800;font-size:.76rem;letter-spacing:.03em;padding:7px 15px;border-radius:var(--pill);cursor:pointer;font-family:inherit;transition:background .15s,color .15s}
.langtoggle button:hover{background:rgba(255,255,255,.1);color:#fff}
.langtoggle button.on{background:var(--yellow);color:var(--black)}
.langlabel{display:block;font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--yellow);font-weight:800;margin:2px 10px 4px}
.sidebar .langtoggle{margin:0 8px 12px}
.topbar .langtoggle{border-color:rgba(255,255,255,.28)}
.topbar .langtoggle::before{display:none}
.topbar .langtoggle button{color:#EDEBE6}
.topbar .langtoggle button.on{color:var(--black)}
[lang="fr"] .prompt .p-tool{white-space:normal}

/* Footer */
.footer{margin-top:40px;padding:26px 0 40px;border-top:1px solid var(--line);color:var(--muted);font-size:.8rem}

/* Utilities */
.mt-0{margin-top:0}.mb-0{margin-bottom:0}.center{text-align:center}
.stack>*+*{margin-top:14px}
.divider{height:1px;background:var(--line);margin:18px 0;border:none}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}