/* =========================================================
   Silk Robotics — "For schools" page (schools.html). Loaded after style.css.
   ========================================================= */

.page-schools { --c: var(--turq); }

/* ---------- hero ---------- */
.sc-hero { position: relative; padding: calc(var(--nav-h) + 24px) 0 clamp(64px, 8vw, 110px); overflow: hidden; isolation: isolate; }
.sc-hero__bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(45% 55% at 75% 45%, rgba(18,181,176,.20), transparent 65%),
    radial-gradient(35% 40% at 85% 85%, rgba(255,182,30,.10), transparent 60%),
    linear-gradient(180deg, var(--bg-deep), var(--bg));
}
.sc-hero__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 4vw, 64px); align-items: center; }
.sc-title { margin: 18px 0 24px; font-weight: 300; font-size: clamp(36px, 5vw, 64px); line-height: 1.06; letter-spacing: -.03em; text-wrap: balance; }
.sc-title b { font-weight: 800; color: var(--turq-2); }
.sc-sub { max-width: 52ch; color: var(--text-dim); font-size: clamp(16px, 1.3vw, 19px); }
.sc-chips { list-style: none; margin: 28px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.sc-chips li { display: inline-flex; align-items: center; gap: 8px; height: 36px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line); font-size: 13px; font-weight: 600; color: var(--text-dim); }
.sc-chips .ic { width: 16px; height: 16px; color: var(--turq-2); }

/* isometric classroom */
.lab { position: relative; aspect-ratio: 1 / .9; display: grid; place-items: center; animation: riseIn 1.2s var(--ease-out) .2s both; }
.lab__tag { position: absolute; top: 0; left: 0; z-index: 1; font: 500 11px var(--mono); letter-spacing: .14em; color: var(--text-faint); }
.lab__tag b { color: var(--turq-2); font-weight: 500; }
.lab__tag--r { left: auto; right: 0; }
.lab__live { display: inline-block; width: 7px; height: 7px; margin-left: 6px; border-radius: 50%; background: #3BE38A; }
.lab__stage { width: 100%; display: grid; place-items: center; perspective: 1800px; }
.lab__floor {
  position: relative; width: min(100%, 600px); padding: 22px; display: grid; gap: 18px; border-radius: 28px;
  transform: rotateX(52deg) rotateZ(-32deg); transform-style: preserve-3d;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(rgba(170,182,255,.07) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, rgba(170,182,255,.07) 1px, transparent 1px) 0 0 / 28px 28px,
    rgba(13,19,48,.75);
}
.lab__board { height: 18px; display: grid; place-items: center; border-radius: 6px; background: linear-gradient(90deg, var(--turq), var(--saffron)); transform: translateZ(18px); box-shadow: 0 0 30px rgba(18,181,176,.5); }
.lab__board span { font: 700 8px var(--mono); letter-spacing: .3em; color: var(--ink); }
.lab__teacher { justify-self: center; width: 30%; aspect-ratio: 2.6; display: grid; place-items: center; border-radius: 10px; border: 1px solid var(--saffron); background: rgba(255,182,30,.1); color: var(--saffron); transform: translateZ(12px); }
.lab__teacher .art { width: auto; height: 80%; stroke-width: 6; }
.lab__desks { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; transform-style: preserve-3d; }
.desk {
  --dc: var(--turq);
  position: relative; aspect-ratio: 1.3; display: grid; place-items: center; border-radius: 10px; color: var(--dc);
  border: 1px solid color-mix(in srgb, var(--dc) 60%, transparent);
  background: color-mix(in srgb, var(--dc) 14%, transparent);
  box-shadow: 0 0 26px -6px var(--dc);
  transform: translateZ(14px);
  transition: border-color .6s, background-color .6s, box-shadow .6s, color .6s;
}
.desk .art { width: 56%; height: 70%; stroke-width: 7; }
.desk i { position: absolute; bottom: -10px; width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); }
.desk i:first-of-type { left: 22%; }
.desk i:last-of-type { right: 22%; }
.js .lab__desks:not(.boot) .desk { opacity: .3; transform: translateZ(0); }
.boot .desk { animation: none; }
@keyframes deskBoot { from { opacity: .3; transform: translateZ(0); box-shadow: none; } }
.desk.ping { animation: deskPing .9s var(--ease-out); }
@keyframes deskPing { 40% { transform: translateZ(28px); } }

/* ---------- why ---------- */
.why { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.why__card { display: grid; gap: 12px; align-content: start; padding: 26px; border-radius: 22px; border: 1px solid var(--line); background: var(--card); transition: border-color .4s, opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out); }
.why__card:hover { border-color: rgba(18,181,176,.5); }
.why__ic { width: 52px; height: 52px; display: grid; place-items: center; margin-bottom: 8px; border-radius: 16px; background: rgba(18,181,176,.14); color: var(--turq-2); }
.why__ic .ic { width: 24px; height: 24px; }
.why__card h3 { font-size: 19px; font-weight: 700; }
.why__card p { font-size: 15px; color: var(--text-dim); }

/* ---------- calculator ---------- */
.cfg { --c: var(--robo); display: grid; grid-template-columns: 1fr 1.05fr; border-radius: 28px; border: 1px solid var(--line-strong); background: rgba(13,19,48,.78); overflow: hidden; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.cfg__controls { display: grid; gap: 32px; align-content: start; padding: clamp(24px, 3vw, 40px); border-right: 1px solid var(--line); }
.cfg__group { display: grid; gap: 12px; min-width: 0; margin: 0; padding: 0; border: 0; }
.cfg__group legend, .cfg__group label { padding: 0; font-weight: 600; font-size: 14px; color: var(--text-dim); }
.cfg__group legend { margin-bottom: 12px; }
.cfg__label-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.cfg__big { font-size: 44px; font-weight: 800; line-height: 1; letter-spacing: -.03em; color: var(--c); font-variant-numeric: tabular-nums; }
.cfg__hint { font-size: 13px; color: var(--text-faint); }

.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg label { position: relative; cursor: pointer; }
.seg input { position: absolute; inset: 0; margin: 0; opacity: 0; cursor: pointer; }
.seg label > span { display: inline-flex; align-items: center; gap: 8px; min-height: 48px; padding: 0 16px; border-radius: 14px; border: 1px solid var(--line-strong); font-weight: 600; font-size: 15px; color: var(--text); transition: border-color .25s, background-color .25s; }
#cfg-per label > span { min-width: 60px; justify-content: center; font-family: var(--mono); }
.seg input:checked + span { border-color: var(--c); background: color-mix(in srgb, var(--c) 16%, transparent); }
.seg input:focus-visible + span { outline: 2px solid var(--turq-2); outline-offset: 2px; }
.seg label:hover input:not(:disabled) + span { border-color: color-mix(in srgb, var(--c) 60%, transparent); }
.seg .is-soon { cursor: not-allowed; }
.seg .is-soon span { opacity: .45; }
.seg small { font: 500 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-faint); }
.seg .art { width: 22px; height: 22px; stroke-width: 9; color: var(--c); }


.cfg__out { display: grid; gap: 18px; align-content: start; padding: clamp(24px, 3vw, 40px); background: linear-gradient(160deg, color-mix(in srgb, var(--c) 9%, transparent), transparent 60%); }
.cfg__need { display: flex; align-items: baseline; gap: 12px; font-size: 18px; color: var(--text-dim); }
.cfg__need b { font-size: clamp(56px, 6vw, 84px); font-weight: 800; line-height: 1; letter-spacing: -.05em; color: var(--text); font-variant-numeric: tabular-nums; }
.cfg__grid { display: grid; grid-template-columns: repeat(10, 1fr); gap: 6px; }
.cfg__grid span { aspect-ratio: 1; display: grid; place-items: center; border-radius: 8px; border: 1px dashed var(--line); color: var(--c); transition: background-color .35s, border-color .35s; transition-delay: calc(var(--i) * 8ms); }
.cfg__grid .art { width: 70%; height: 70%; stroke-width: 8; opacity: 0; transform: scale(.6); transition: opacity .3s, transform .4s var(--ease-out); transition-delay: inherit; }
.cfg__grid span.on { border-style: solid; border-color: color-mix(in srgb, var(--c) 50%, transparent); background: color-mix(in srgb, var(--c) 14%, transparent); }
.cfg__grid span.on .art { opacity: 1; transform: none; }
.cfg__list { margin: 0; display: grid; border-top: 1px solid var(--line); }
.cfg__list div { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.cfg__list dt { color: var(--text-dim); }
.cfg__list dd { margin: 0; font: 600 15px var(--mono); white-space: nowrap; }
.cfg__list em { font: 600 14px var(--font); font-style: normal; color: var(--turq-2); }
.cfg__total { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 12px; }
.cfg__total span { font-weight: 600; color: var(--text-dim); }
.cfg__total b { font-size: clamp(26px, 2.6vw, 36px); font-weight: 800; letter-spacing: -.02em; }
.cfg__note { margin-top: -8px; font-size: 13px; color: var(--text-faint); }

/* ---------- curriculum ---------- */
.seg--tabs button { display: inline-flex; align-items: center; gap: 8px; min-height: 48px; padding: 0 16px; border-radius: 14px; border: 1px solid var(--line-strong); background: none; cursor: pointer; font-weight: 600; font-size: 15px; color: var(--text-dim); transition: border-color .25s, background-color .25s, color .25s; }
.seg--tabs button:hover { color: var(--text); }
.seg--tabs button[aria-selected="true"] { color: var(--text); border-color: var(--c); background: color-mix(in srgb, var(--c) 14%, transparent); }
.term { --c: var(--robo); display: grid; gap: 22px; padding: clamp(22px, 3vw, 36px); border-radius: 28px; border: 1px solid var(--line); background: var(--card); }
.term__head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.term__kit { display: inline-flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 300; }
.term__kit .art { width: 34px; height: 34px; stroke-width: 7; color: var(--c); }
.term__kit b { font-weight: 800; color: var(--c); }
.term__sum { font: 500 13px var(--mono); color: var(--text-dim); }
.term__sum b { color: var(--text); font-weight: 600; }
.term__bar { display: grid; gap: 6px; }
.term__seg { position: relative; height: 44px; display: flex; align-items: center; padding: 0 14px; overflow: hidden; border-radius: 12px; background: var(--c); color: var(--ink); font: 700 12px var(--mono); transform-origin: left; }
.term__seg i { display: none; }
@keyframes segShine { 60%, 100% { transform: translateX(100%); } }
.js .term:not(.in) .term__seg { transform: scaleX(0); }
.term.in .term__seg { animation: segGrow .9s var(--ease-out) both; animation-delay: calc(var(--k) * .12s); }
@keyframes segGrow { from { transform: scaleX(0); } }
.term__mods { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.term__mods li { display: grid; gap: 6px; align-content: start; min-width: 0; padding: 14px 4px 0; border-top: 2px solid color-mix(in srgb, var(--c) 40%, transparent); }
.term__weeks { font: 500 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--c); }
.term__mods h3 { font-size: 18px; font-weight: 700; }
.term__mods p { font-size: 14px; color: var(--text-dim); }
.term__n { font: 500 12px var(--mono); color: var(--text-faint); }
.cur-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; margin-top: 28px; }
.cur-foot__t { font: 500 12px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--text-faint); }
.incl { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.incl li { display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--card); font-weight: 600; font-size: 14px; }
.incl .ic { width: 18px; height: 18px; color: var(--turq-2); }
#cur-pdf { margin-left: auto; }

/* ---------- training ---------- */
.train { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.train__card { position: relative; display: grid; gap: 14px; align-content: start; min-height: 280px; padding: 28px; border-radius: 24px; border: 1px solid var(--line); background: var(--card); transition: border-color .4s, opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out); }
.train__card--hl { border-color: rgba(18,181,176,.45); background: linear-gradient(160deg, rgba(18,181,176,.12), rgba(255,255,255,.02)); }
.train__meta { position: absolute; top: 24px; right: 24px; padding: 6px 10px; border-radius: 999px; border: 1px solid rgba(255,182,30,.35); font: 600 12px var(--mono); color: var(--saffron); }
.train__ic { width: 56px; height: 56px; display: grid; place-items: center; border-radius: 16px; background: rgba(18,181,176,.14); color: var(--turq-2); }
.train__ic .ic { width: 26px; height: 26px; }
.train__card h3 { margin-top: 18px; font-size: 22px; font-weight: 800; letter-spacing: -.01em; }
.train__card p { color: var(--text-dim); }

/* ---------- process ---------- */
.steps { position: relative; list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.steps::before { content: ""; position: absolute; top: 27px; left: 28px; right: calc((100% - 80px) / 5 - 28px); height: 1px; background: linear-gradient(90deg, var(--turq), var(--saffron)); transform: scaleX(0); transform-origin: left; transition: transform 1.8s var(--ease-out) .3s; }
.steps.in::before { transform: scaleX(1); }
.steps li { position: relative; display: grid; gap: 10px; align-content: start; }
.steps__n { position: relative; z-index: 1; width: 56px; height: 56px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line-strong); background: var(--bg); font: 600 14px var(--mono); color: var(--turq-2); transition: border-color .5s, background-color .5s, box-shadow .5s; transition-delay: calc(.3s + var(--s) * .3s); }
.steps.in .steps__n { border-color: var(--turq); background: #0F2340; box-shadow: 0 0 0 6px rgba(18,181,176,.12); }
.steps h3 { margin-top: 8px; font-size: 19px; font-weight: 700; }
.steps p { font-size: 15px; color: var(--text-dim); }

/* ---------- quote ---------- */
.talk { display: grid; gap: 12px; margin-top: 8px; padding: 24px; border-radius: 22px; border: 1px solid var(--line); background: var(--card); }
.talk h3 { font-size: 20px; font-weight: 700; }
.talk p { color: var(--text-dim); }
.talk__btns { display: flex; flex-wrap: wrap; gap: 10px; }
.talk__docs { display: flex; gap: 10px; font-size: 13px; color: var(--text-faint) !important; }
.talk__docs .ic { width: 16px; height: 16px; margin-top: 2px; color: var(--turq-2); }
.sc-faq { margin-top: 8px; border-top: 0; }
.sc-faq__title { padding: 12px 0 10px; font-size: 26px; font-weight: 300; letter-spacing: -.01em; }
.sc-faq__title b { font-weight: 800; }
.sc-faq details:first-of-type { border-top: 1px solid var(--line); }

.field textarea { width: 100%; min-height: 96px; padding: 14px 16px; resize: vertical; border-radius: 14px; border: 1px solid var(--line-strong); background: rgba(8,12,34,.5); color: var(--text); font: 500 16px/1.5 var(--font); transition: border-color .25s, box-shadow .25s; }
.field textarea:focus { outline: none; border-color: var(--turq-2); box-shadow: 0 0 0 4px rgba(18,181,176,.22); }
.field--kits { margin: 0; padding: 0; border: 0; min-width: 0; }
.field--kits legend { margin-bottom: 8px; padding: 0; font-weight: 600; font-size: 14px; }
.checks { display: flex; flex-wrap: wrap; gap: 8px; }
.checks label { position: relative; cursor: pointer; }
.checks input { position: absolute; inset: 0; margin: 0; opacity: 0; cursor: pointer; }
.checks span { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 14px; border-radius: 12px; border: 1px solid var(--line-strong); font-weight: 600; font-size: 14px; transition: border-color .25s, background-color .25s; }
.checks span::before { content: ""; width: 16px; height: 16px; border-radius: 5px; border: 1.5px solid var(--text-faint); transition: background-color .2s, border-color .2s; }
.checks input:checked + span { border-color: var(--turq); background: rgba(18,181,176,.12); }
.checks input:checked + span::before { border-color: var(--turq-2); background: var(--turq-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230D1330' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 12px no-repeat; }
.checks input:focus-visible + span { outline: 2px solid var(--turq-2); outline-offset: 2px; }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .sc-hero__grid { grid-template-columns: 1fr; }
  .lab { width: 100%; max-width: 560px; margin: 0 auto; }
  .why { grid-template-columns: repeat(2, 1fr); }
  .cfg { grid-template-columns: 1fr; }
  .cfg__controls { border-right: 0; border-bottom: 1px solid var(--line); }
  .train { grid-template-columns: 1fr; }
  .train__card { min-height: 0; }
}
@media (max-width: 860px) {
  .steps { grid-template-columns: 1fr; gap: 26px; }
  .steps::before { top: 28px; bottom: 28px; left: 27px; right: auto; width: 1px; height: auto; transform: scaleY(0); transform-origin: top; }
  .steps.in::before { transform: scaleY(1); }
  .steps li { grid-template-columns: 56px 1fr; column-gap: 18px; row-gap: 4px; }
  .steps__n { grid-row: 1 / 3; }
  .steps h3 { margin-top: 2px; }
  .term__mods { grid-template-columns: 1fr !important; gap: 14px; }
  .term__seg { padding: 0 8px; font-size: 11px; }
}
@media (max-width: 640px) {
  .why { grid-template-columns: 1fr; }
  .cfg__grid { grid-template-columns: repeat(8, 1fr); }
  #cur-pdf { margin-left: 0; }
  .lab { aspect-ratio: 1 / .66; margin-top: 16px; }
  .lab__stage { margin-top: 12px; }
  .lab__floor { width: 76%; padding: 14px; gap: 12px; }
  .lab__desks { gap: 8px; }
}

/* the row header's generic "div → grid" rule must not stack the kit tabs */
.section__head--row > .seg.seg--tabs { display: flex; gap: 8px; }

/* calmer cards, no icon tiles */
.sc-hero__media { margin: 0; }
.sc-hero__media img { width: 100%; height: auto; }
.why__card, .train__card { min-height: 0; padding: 22px; }
.train__card h3 { margin-top: 28px; }