/* ==========================================================
   ITM Solutions — Solutions (2026)
   Concept: a "periodic table" of solutions + scrollytelling chapters.
   Builds on home-2026.css primitives and site-chrome.css tokens.
   ========================================================== */

body{background:var(--ink-0)}
.sol{margin-top:-96px} /* run the hero under the floating nav */
.sol{--mono:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--paper:#f3efe7;--violet:#8b93ff}

/* family colours */
.fam-build  {--fam:var(--blue)}
.fam-immerse{--fam:var(--violet)}
.fam-grow   {--fam:var(--orange)}
.fam-think  {--fam:var(--teal)}

/* ---------- Hero ---------- */
.sol-hero{position:relative;padding:150px 0 clamp(64px,8vw,110px);overflow:hidden;isolation:isolate}
.sol-hero::before{
    content:"";position:absolute;inset:0;z-index:-1;
    background:
        radial-gradient(700px 420px at 85% 10%,rgba(139,147,255,.20),transparent 60%),
        radial-gradient(700px 420px at 10% 30%,rgba(0,172,237,.16),transparent 60%),
        radial-gradient(600px 400px at 60% 100%,rgba(247,148,29,.12),transparent 60%);
}
.sol-hero-top{display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:end;margin-bottom:clamp(40px,6vw,72px)}
.sol-hero h1{font-size:clamp(2.8rem,7vw,6.2rem);letter-spacing:-.055em;line-height:.95}
.sol-hero .lede{color:var(--muted);font-size:clamp(1rem,1.3vw,1.15rem)}
@media (max-width:900px){.sol-hero-top{grid-template-columns:1fr}}

/* filter chips */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.filters button{
    display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:999px;
    font:500 14px var(--sans);color:var(--muted);background:rgba(255,255,255,.03);
    border:1px solid var(--line-2);cursor:pointer;transition:all .25s var(--ease);
}
.filters button .sw{width:8px;height:8px;border-radius:50%;background:var(--fam,var(--text))}
.filters button:hover{color:var(--text);border-color:rgba(255,255,255,.3)}
.filters button[aria-pressed="true"]{color:var(--ink-0);background:var(--text);border-color:var(--text)}

/* periodic table */
.ptable{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.el{
    position:relative;aspect-ratio:1/1.08;border-radius:18px;padding:14px 14px 16px;
    display:flex;flex-direction:column;justify-content:space-between;
    background:linear-gradient(160deg,color-mix(in srgb,var(--fam) 16%,transparent),rgba(255,255,255,.02) 55%),var(--ink-1);
    border:1px solid color-mix(in srgb,var(--fam) 35%,transparent);
    color:var(--text);overflow:hidden;
    transition:transform .35s var(--ease),opacity .35s var(--ease),filter .35s var(--ease),border-color .35s,box-shadow .35s;
}
.el::after{ /* shine */
    content:"";position:absolute;inset:0;pointer-events:none;
    background:radial-gradient(260px circle at var(--mx,50%) var(--my,0%),color-mix(in srgb,var(--fam) 28%,transparent),transparent 60%);
    opacity:0;transition:opacity .35s;
}
.el:hover{transform:translateY(-6px);border-color:var(--fam);box-shadow:0 24px 50px -24px var(--fam)}
.el:hover::after{opacity:1}
.el .top{display:flex;justify-content:space-between;font-family:var(--mono);font-size:12px;color:var(--muted)}
.el .sym{font-size:clamp(2.6rem,4.4vw,3.6rem);font-weight:600;letter-spacing:-.05em;line-height:1;color:var(--text)}
.el .sym::first-letter{color:var(--fam)}
.el .name{font-size:14px;font-weight:500;line-height:1.25;min-height:2.5em;display:flex;align-items:flex-end}
.el .fam{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--fam)}
@media (max-width:600px){
    .ptable{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
    .el{padding:10px 10px 12px;border-radius:14px}
    .el .top span:last-child{display:none}
    .el .sym{font-size:2.1rem}
    .el .name{font-size:11.5px}
}
.ptable.filtering .el:not(.match){opacity:.18;filter:grayscale(1);transform:scale(.97)}

.legend{display:flex;flex-wrap:wrap;gap:18px;margin-top:22px;font-family:var(--mono);font-size:12px;color:var(--dim)}
.legend span{display:inline-flex;align-items:center;gap:8px}
.legend i{width:10px;height:10px;border-radius:3px;background:var(--fam)}

/* ---------- Chapters ---------- */
.chapters{display:grid;grid-template-columns:260px 1fr;gap:clamp(32px,5vw,80px);align-items:start}
.rail{position:sticky;top:120px}
.rail .eyebrow{margin-bottom:18px}
.rail ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line-2)}
.rail a{
    display:flex;align-items:center;gap:12px;padding:9px 0 9px 18px;margin-left:-1px;
    border-left:2px solid transparent;color:var(--dim);font-size:14.5px;transition:color .25s,border-color .25s;
}
.rail a .n{font-family:var(--mono);font-size:11px;width:20px}
.rail a:hover{color:var(--text)}
.rail a.active{color:var(--text);border-left-color:var(--fam)}
.rail a.active .n{color:var(--fam)}
.rail .progress{height:2px;margin-top:22px;background:var(--line);border-radius:2px;overflow:hidden}
.rail .progress span{display:block;height:100%;width:0;background:var(--grad);transition:width .2s linear}
@media (max-width:1000px){.chapters{grid-template-columns:1fr}.rail{display:none}}

.chapter{padding-block:clamp(48px,7vw,96px);border-top:1px solid var(--line);scroll-margin-top:100px}
.chapter:first-child{border-top:0;padding-top:0}
.ch-head{display:flex;align-items:center;gap:16px;margin-bottom:22px;font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.ch-head .chip-sym{
    width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
    font:600 17px var(--sans);letter-spacing:-.04em;color:var(--text);
    background:color-mix(in srgb,var(--fam) 18%,transparent);border:1px solid color-mix(in srgb,var(--fam) 45%,transparent);
}
.ch-head .fam-tag{color:var(--fam);text-transform:uppercase;letter-spacing:.1em}
.chapter h2{font-size:clamp(2.4rem,5.4vw,4.6rem);margin-bottom:clamp(24px,3vw,36px)}

.ch-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,4vw,56px);align-items:start}
.chapter:nth-child(even) .ch-grid{grid-template-columns:.95fr 1.05fr}
.chapter:nth-child(even) .ch-visual{order:2}
@media (max-width:900px){.ch-grid,.chapter:nth-child(even) .ch-grid{grid-template-columns:1fr}.chapter:nth-child(even) .ch-visual{order:0}}

.ch-visual{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    background:var(--paper);aspect-ratio:4/3;display:grid;place-items:center;padding:clamp(20px,4vw,48px);
    box-shadow:0 30px 80px -40px rgba(0,0,0,.9);
}
.ch-visual::before{ /* family tint corner */
    content:"";position:absolute;inset:0;
    background:radial-gradient(420px 300px at 100% 0%,color-mix(in srgb,var(--fam) 30%,transparent),transparent 65%);
}
.ch-visual img{position:relative;max-height:100%;width:auto;object-fit:contain;transition:transform .8s var(--ease)}
.chapter:hover .ch-visual img{transform:scale(1.04) rotate(-.6deg)}
.ch-visual .stamp{
    position:absolute;left:16px;bottom:14px;font-family:var(--mono);font-size:11px;letter-spacing:.06em;
    color:rgba(5,7,12,.55);text-transform:uppercase;
}

.ch-body,.ch-body p{color:var(--muted)!important;font-size:16.5px;line-height:1.7;margin:0 0 14px}
.ch-body strong{color:var(--text);font-weight:600}
.ch-body.clamped{max-height:15.5em;overflow:hidden;-webkit-mask-image:linear-gradient(#000 60%,transparent);mask-image:linear-gradient(#000 60%,transparent)}
.ch-more{
    background:none;border:0;padding:0;margin:4px 0 0;cursor:pointer;
    font:500 14px var(--sans);color:var(--text);display:inline-flex;align-items:center;gap:8px;
}
.ch-more i{font-size:11px;transition:transform .25s}
.ch-more[aria-expanded="true"] i{transform:rotate(180deg)}

.highlights{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 26px;padding:0;list-style:none}
.highlights li{
    font-size:13px;padding:7px 13px;border-radius:999px;color:var(--text);
    border:1px solid color-mix(in srgb,var(--fam) 40%,transparent);background:color-mix(in srgb,var(--fam) 8%,transparent);
}

/* ---------- Combine band ---------- */
.combos{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.combo{
    border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:var(--ink-1);
    display:flex;flex-direction:column;gap:14px;
}
.combo .eq{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:14px;color:var(--muted)}
.combo .eq b{
    width:40px;height:40px;border-radius:10px;display:grid;place-items:center;font:600 15px var(--sans);color:var(--text);
    background:color-mix(in srgb,var(--fam) 18%,transparent);border:1px solid color-mix(in srgb,var(--fam) 45%,transparent);
}
.combo h3{font-size:1.5rem}
.combo p{color:var(--muted);font-size:15px}
@media (max-width:900px){.combos{grid-template-columns:1fr}}

@media (prefers-reduced-motion:reduce){
    .el,.ch-visual img{transition:none}
}