/* dkzv.site — page layout for index.html and unlock.html.
   Component look & tokens come from dkzv-ui.css; this file only lays
   out the bands and carries the responsive collapse. Colors are always
   var(--dkzv-*) tokens, never literals (grounds alternate per band). */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--dkzv-paper); }

/* Prototype-parity link defaults (weaker than any component class). */
a { color: var(--dkzv-fg); }
a:hover { color: var(--dkzv-accent-text); }

img { max-width: 100%; }

/* ---------- shells ---------- */

.shell { max-width: 1240px; margin: 0 auto; padding: 0 40px; }
.shell--section { padding: 92px 40px; }
.shell--strip { padding: 40px; }

/* ---------- nav ---------- */

.nav { background: var(--dkzv-bg); border-bottom: 1px solid var(--dkzv-rule); }
.nav--sticky { position: sticky; top: 0; z-index: 40; }
.nav__inner { height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.nav__brand { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.nav__logo { width: 38px; height: 38px; border-radius: var(--dkzv-radius-icon); display: block; flex: none; }
.nav__brand-text { display: flex; flex-direction: column; gap: 2px; }
.nav__brand-name { font-size: 22px; line-height: 1; color: var(--dkzv-fg); }
.nav__brand-sub { font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--dkzv-fg-muted); }
.nav__links { display: flex; align-items: center; gap: 30px; }
.dkzv-root .nav__link { font-size: var(--dkzv-text-small); color: var(--dkzv-fg-soft); text-decoration: none; }
.dkzv-root .nav__link:hover { color: var(--dkzv-fg); }
.dkzv-root .nav__link--muted { color: var(--dkzv-fg-muted); }
.dkzv-root .nav__link--muted:hover { color: var(--dkzv-fg-soft); }
.nav__link--current { font-size: var(--dkzv-text-small); color: var(--dkzv-fg); }

/* ---------- hero ---------- */

.hero { background: var(--dkzv-bg); position: relative; overflow: hidden; min-height: 620px; display: flex; align-items: center; }
.hero__inner { position: relative; width: 100%; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr); gap: 64px; align-items: center; }
.hero__eyebrow-row { display: flex; align-items: center; gap: 10px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--dkzv-amber); flex: none; }
.hero__title { margin: 22px 0 0; font-weight: 400; font-size: clamp(46px, 5.4vw, 78px); line-height: 1.02; letter-spacing: -0.01em; color: var(--dkzv-fg); text-wrap: pretty; }
.hero__standfirst { margin: 26px 0 0; max-width: var(--dkzv-measure); font-size: var(--dkzv-text-body); line-height: 1.62; color: var(--dkzv-fg-soft); text-wrap: pretty; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

/* big store CTA — the developer page listing every Connect IQ app */
.hero__store { margin: 30px 0 0; max-width: var(--dkzv-measure); display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 20px; padding: 22px 26px; background: var(--dkzv-amber); border-radius: var(--dkzv-radius-sharp); text-decoration: none; color: var(--dkzv-midnight); transition: filter 140ms ease; }
.hero__store:hover { filter: brightness(1.06); color: var(--dkzv-midnight); }
.hero__store-kicker { display: block; font-size: var(--dkzv-text-eyebrow); letter-spacing: 0.14em; text-transform: uppercase; color: var(--dkzv-amber-ink); }
.hero__store-label { display: block; margin-top: 6px; font-size: clamp(20px, 2.4vw, 27px); line-height: 1.15; }
.hero__store-arrow { font-size: 26px; line-height: 1; }
.hero__media { display: flex; justify-content: center; }
.hero__render { width: 100%; max-width: 440px; height: auto; border-radius: var(--dkzv-radius); display: block; border: 1px solid var(--dkzv-rule); }

/* ---------- band strips (stats, unlock, recovery) ---------- */

.stats-band { background: var(--dkzv-band); border-top: 1px solid var(--dkzv-rule); border-bottom: 1px solid var(--dkzv-rule); }
.strip { background: var(--dkzv-paper-deep); border-top: 1px solid var(--dkzv-rule); border-bottom: 1px solid var(--dkzv-rule); }
.strip__inner { display: grid; grid-template-columns: auto minmax(0, 1fr) auto auto; gap: 28px; align-items: center; }
.strip__icon { flex: none; }
.strip__copy { margin: 0; font-size: var(--dkzv-text-small); line-height: 1.6; color: var(--dkzv-fg-soft); }
.strip .dkzv-devid, .strip form.devid-form { width: 260px; }
.strip form.devid-form { display: contents; }

/* ---------- sections ---------- */

.section { background: var(--dkzv-bg); }
.grid-plates { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; margin-top: 56px; }
.figure-plate { margin: 92px 0 0; }
.figure-plate img { width: 100%; height: auto; display: block; border: 1px solid var(--dkzv-rule); }
.figure-plate__caption { margin-top: 14px; display: flex; justify-content: space-between; gap: 24px; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dkzv-fg-muted); }
.grid-shelf { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 64px; margin-top: 92px; align-items: start; }
.shelf-col { display: flex; flex-direction: column; gap: 56px; }

.rule-mt { margin-top: 56px; }
.grid-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; margin-top: 22px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.card-title { margin: 0; font-size: var(--dkzv-text-title); font-weight: 400; color: var(--dkzv-fg); }
.card-title--muted { color: var(--dkzv-fg-muted); }
.card-body { margin: 14px 0 0; font-size: var(--dkzv-text-small); line-height: 1.6; color: var(--dkzv-fg-soft); }
.card-body--muted { color: var(--dkzv-fg-muted); }
.card-foot { display: flex; align-items: center; gap: 14px; margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--dkzv-rule-faint); }
.dkzv-root .card-foot__link { font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--dkzv-accent-text); text-decoration: none; }
.card-foot__meta { font-size: 12px; color: var(--dkzv-fg-muted); }

/* ---------- about ---------- */

.grid-about { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 64px; margin-top: 48px; align-items: start; }
.about-copy p { margin: 0; max-width: var(--dkzv-measure); font-size: var(--dkzv-text-body); line-height: 1.62; color: var(--dkzv-fg-soft); }
.about-copy p + p { margin-top: 22px; }
.card-note { margin: 16px 0 0; font-size: var(--dkzv-text-small); line-height: 1.6; color: var(--dkzv-fg-soft); }
.dkzv-root .card-mail { display: inline-block; margin-top: 18px; font-size: var(--dkzv-text-data); color: var(--dkzv-accent-text); text-decoration: none; }
.routeline-wrap { margin-top: 72px; }

/* ---------- footer ---------- */

.footer { background: var(--dkzv-band); border-top: 1px solid var(--dkzv-rule); }
.footer__grid { padding-top: 56px; padding-bottom: 32px; display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr)); gap: 48px; }
.footer__brand-row { display: flex; align-items: center; gap: 14px; }
.footer__tagline { margin: 18px 0 0; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--dkzv-fg-muted); }
.footer__col { display: flex; flex-direction: column; gap: 12px; }
.dkzv-root .flink { font-size: var(--dkzv-text-small); color: var(--dkzv-fg-soft); text-decoration: none; }
.dkzv-root .flink:hover { color: var(--dkzv-fg); }
.footer__legal { padding-bottom: 40px; }
.footer__copyright { margin: 0; padding-top: 24px; border-top: 1px solid var(--dkzv-rule-faint); font-size: 12px; letter-spacing: 0.06em; color: var(--dkzv-fg-muted); }
.footer__row { padding-top: 48px; padding-bottom: 40px; display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer__row-copyright { margin: 16px 0 0; font-size: 12px; letter-spacing: 0.06em; color: var(--dkzv-fg-muted); }
.footer__links-inline { display: flex; gap: 28px; flex-wrap: wrap; }

/* ---------- unlock page ---------- */

.page-head { padding-top: 72px; padding-bottom: 0; }
.steps { padding-top: 56px; padding-bottom: 0; }
.steps__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.step { border-top: 1px solid var(--dkzv-rule); padding-top: 18px; display: flex; gap: 16px; }
.step__num { font-size: var(--dkzv-text-data); color: var(--dkzv-accent-text); flex: none; }
.step__title { margin: 0; font-size: var(--dkzv-text-small); font-weight: 600; color: var(--dkzv-fg); }
.step__body { margin: 6px 0 0; font-size: var(--dkzv-text-small); line-height: 1.6; color: var(--dkzv-fg-soft); }

.buy { padding-top: 72px; padding-bottom: 92px; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr); gap: 64px; align-items: start; }

.chooser { display: flex; flex-direction: column; }
.chooser__row { display: grid; grid-template-columns: 20px minmax(0, 1fr) auto; gap: 20px; align-items: center; padding: 22px 4px; border-bottom: 1px solid var(--dkzv-rule-faint); cursor: pointer; }
.chooser__row:focus-visible { outline: 2px solid var(--dkzv-amber); outline-offset: 2px; }
.chooser__row--disabled { cursor: default; }
.chooser__marker { width: 14px; height: 14px; border: 1px solid var(--dkzv-rule); display: grid; place-items: center; }
.chooser__marker-dot { width: 8px; height: 8px; background: var(--dkzv-amber); display: none; }
.chooser__row[aria-checked="true"] .chooser__marker-dot { display: block; }
.chooser__title-row { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.chooser__name { font-size: var(--dkzv-text-title); color: var(--dkzv-fg); }
.chooser__kind { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dkzv-fg-muted); }
.dkzv-root .chooser__store { display: inline-block; margin-top: 8px; font-size: 12px; color: var(--dkzv-accent-text); text-decoration: none; }
.chooser__price { font-size: var(--dkzv-text-data); color: var(--dkzv-fg); }
.chooser__price--muted { color: var(--dkzv-fg-muted); }
.callout-wrap { margin-top: 40px; }

.checkout-note { margin: 14px 0 0; font-size: var(--dkzv-text-small); line-height: 1.6; color: var(--dkzv-fg-soft); }
.field { margin-top: 22px; display: flex; flex-direction: column; gap: 8px; }
.field--devid { margin-top: 26px; }
.field__label { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dkzv-fg-muted); }
.input { width: 100%; height: var(--dkzv-control-height); padding: 0 14px; background: transparent; border: 1px solid var(--dkzv-rule); border-radius: var(--dkzv-radius-sharp); color: var(--dkzv-fg); font-family: var(--dkzv-font-sans); font-size: var(--dkzv-text-small); }
.input:focus { outline: 2px solid var(--dkzv-amber); outline-offset: 1px; }
.input::placeholder { color: var(--dkzv-fg-muted); }

.totals { margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--dkzv-rule); }
.totals__row { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.totals__row--total { margin-top: 14px; }
.totals__app { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dkzv-fg-muted); }
.totals__price { font-size: var(--dkzv-text-data); color: var(--dkzv-fg-soft); }
.totals__label { font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dkzv-fg); }
.totals__amount { font-size: 28px; color: var(--dkzv-fg); }

.pay-wrap { margin-top: 24px; }
.dkzv-btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.checkout-status { margin: 14px 0 0; font-size: 13px; line-height: 1.55; color: var(--dkzv-fg-muted); min-height: 1em; }
.checkout-status--error { color: var(--dkzv-accent-text); }
.refund-note { margin: 14px 0 0; font-size: 13px; line-height: 1.55; color: var(--dkzv-fg-muted); }
.dkzv-root .refund-note a { color: var(--dkzv-fg-soft); }

/* success state inside the checkout card */
.success__key { margin: 18px 0 0; font-size: var(--dkzv-text-title); letter-spacing: 0.08em; color: var(--dkzv-fg); word-break: break-all; }
.success__note { margin: 14px 0 0; font-size: var(--dkzv-text-small); line-height: 1.6; color: var(--dkzv-fg-soft); }
.success__actions { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- responsive ---------- */

@media (max-width: 960px) {
  .hero__inner, .grid-shelf, .grid-about, .grid-cards, .buy { grid-template-columns: minmax(0, 1fr); }
  .hero__inner { gap: 40px; }
  .grid-plates { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .steps__grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .strip__inner { grid-template-columns: auto minmax(0, 1fr); }
  .strip .dkzv-devid, .strip form.devid-form { width: 100%; grid-column: 1 / -1; }
  .strip .dkzv-btn { grid-column: 1 / -1; }
  .buy { gap: 48px; }
}

@media (max-width: 560px) {
  .shell, .shell--strip { padding-left: 20px; padding-right: 20px; }
  .shell--section { padding: 56px 20px; }
  .page-head { padding-top: 48px; }
  .steps { padding-top: 40px; }
  .buy { padding-top: 48px; padding-bottom: 56px; }
  .nav__inner { gap: 16px; }
  .nav__links { gap: 16px; }
  .nav__links .nav__link--anchor { display: none; }
  .hero { min-height: 0; }
  .hero__store { padding: 18px 20px; gap: 12px; }
  .grid-plates { grid-template-columns: minmax(0, 1fr); }
  .dkzv-root .dkzv-stats { grid-template-columns: minmax(0, 1fr); }
  .dkzv-root .dkzv-stats__cell--divided { border-right: 0; border-bottom: 1px solid var(--dkzv-rule-faint); }
  .dkzv-root .dkzv-heading__title { font-size: clamp(34px, 9.5vw, 54px); }
  .hero__actions .dkzv-btn { flex: 1 1 100%; }
  .strip__icon { display: none; }
  .strip__inner { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .figure-plate__caption { flex-direction: column; gap: 6px; }
  .chooser__row { grid-template-columns: 20px minmax(0, 1fr); }
  .chooser__price { grid-column: 2; }
}