/* Light Chop LLC — components: nav, buttons, links, hero field, sections, card, badge, lists, footer */

/* Skip link (§8.7) */
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; }

/* Buttons (§8.1) */
.btn, .skip-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 22px;
  border-radius: var(--radius-button);
  font: var(--fw-semibold) 1rem/1 var(--font-sans);
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease-spring),
    background-color var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out);
}
.btn--primary, .skip-link { background-color: var(--color-btn-bg); color: var(--color-btn-text); }
.btn--secondary { background-color: transparent; border-color: var(--color-border-strong); color: var(--color-text); }
@media (hover: hover) {
  .btn--primary:hover:not(:disabled, [aria-disabled="true"]) {
    background-color: var(--color-btn-bg-hover);
    transform: translateY(var(--lift));
  }
  .btn--secondary:hover:not(:disabled, [aria-disabled="true"]) {
    border-color: var(--color-text);
    transform: translateY(var(--lift));
  }
}
.btn:active:not(:disabled, [aria-disabled="true"]) { transform: scale(var(--press-scale)); transition-duration: 80ms; }
.btn--secondary:active:not(:disabled, [aria-disabled="true"]) { background-color: var(--color-control); }
.btn:focus-visible, .skip-link:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: var(--disabled-opacity); cursor: not-allowed; }
@media (prefers-reduced-motion: reduce) {
  .btn:active { transition-duration: 0ms; }
}

/* Actions row: hero, contact (§7.2, §7.6) */
.actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 40px; }
@media (max-width: 479.98px) {
  .actions { flex-direction: column; }
  .actions .btn { width: 100%; }
}

/* Links (§8.2). Inline links are any <a> without a class */
a:not([class]) {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--color-border-strong);
  text-underline-offset: 0.2em;
  border-radius: 4px;
  transition: text-decoration-color var(--dur-base) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
@media (hover: hover) {
  a:not([class]):hover { text-decoration-color: currentColor; text-decoration-thickness: 2px; }
}
a:not([class]):active { opacity: 0.7; }

/* Nav and footer links */
.navlink {
  display: inline-block;
  padding-block: 8px;
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  line-height: 1.6;
  text-decoration: none;
  border-radius: 4px;
  transition: color var(--dur-base) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.navlink[aria-current="page"] { color: var(--color-text); }
@media (hover: hover) {
  .navlink:hover { color: var(--color-text); }
}
.navlink:active { opacity: 0.7; }

/* Nav (§7.1, §8.3) */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-page);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out);
}
.nav--scrolled { border-bottom-color: var(--color-hairline); }
.nav__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  height: calc(var(--nav-height) - 1px); /* + 1px border = --nav-height */
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-heading);
  text-decoration: none;
  border-radius: 8px;
  transition: opacity var(--dur-fast) var(--ease-out);
}
.brand__mark { flex: none; }
.brand__word { font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.02em; line-height: 1; white-space: nowrap; }
@media (hover: hover) {
  .brand:hover { opacity: 0.8; }
}
.brand:active { opacity: 0.65; }
.brand:focus-visible { outline-offset: 4px; }

.nav__list { list-style: none; display: flex; gap: 32px; }

/* Menu button: 40px visual, 48px hit area */
.nav__toggle { position: relative; height: 40px; padding: 0 16px; }
.nav__toggle::after { content: ""; position: absolute; inset: -4px 0; }
@media (min-width: 768px) {
  .nav__toggle { display: none; }
}

@media (max-width: 767.98px) {
  /* No JS: no Menu button; links wrap in a row under the brand */
  .no-js .nav__toggle { display: none; }
  .no-js .nav__inner {
    height: auto;
    min-height: calc(var(--nav-height) - 1px);
    flex-wrap: wrap;
    row-gap: 0;
    padding-block: 12px 4px;
  }
  .no-js .nav__menu { flex-basis: 100%; }
  .no-js .nav__list { flex-wrap: wrap; column-gap: 24px; }

  /* JS: links live in a solid sheet under the nav */
  .js .nav__menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-control);
    border-bottom: 1px solid var(--color-hairline);
    box-shadow: var(--shadow-menu);
    opacity: 0;
    transform: translateY(-8px);
    visibility: hidden;
    transition: opacity var(--dur-base) var(--ease-spring),
      transform var(--dur-base) var(--ease-spring),
      visibility 0s linear var(--dur-base);
  }
  .js .nav__menu.is-open { opacity: 1; transform: none; visibility: visible; transition-delay: 0s; }
  .js .nav__list { flex-direction: column; gap: 0; padding-inline: var(--gutter); }
  .js .nav__list li + li { border-top: 1px solid var(--color-hairline); }
  .js .nav__list .navlink {
    display: flex;
    align-items: center;
    height: 56px;
    padding-block: 0;
    font-size: var(--fs-lead);
  }
}

/* Sentinel for the nav's scrolled state: leaves the viewport once scrollY > 8 */
.nav-sentinel { position: absolute; top: 8px; left: 0; width: 1px; height: 1px; pointer-events: none; }

/* Hero (§7.2) and line-field (§9.2) */
.hero { position: relative; isolation: isolate; overflow: hidden; padding-block: 96px 72px; }
@media (min-width: 480px) {
  .hero { padding-block: 112px 80px; }
}
@media (min-width: 768px) {
  .hero { display: flex; align-items: center; min-height: min(88vh, 820px); padding-block: var(--space-9); }
}
@media (min-width: 768px) and (max-height: 499px) {
  .hero { min-height: auto; }
}

.chop {
  position: absolute;
  inset: 0;
  width: 100%;  /* a canvas doesn't stretch from inset alone */
  height: 100%;
  z-index: -1;
  opacity: 0;
  transition: opacity 600ms var(--ease-out);
  pointer-events: none;
}
.chop.is-ready { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .chop { transition: none; }
}

.hero__title { margin-top: var(--space-5); max-width: var(--measure-h); }
.hero__lead { margin-top: 28px; max-width: 34rem; color: var(--color-text-muted); }

/* Home sections */
.eyebrow + h2 { margin-top: var(--space-5); }

/* About (§7.3) */
.about__title { max-width: 16ch; }
.about__text { margin-top: var(--space-6); }
.about__text > * + * { margin-top: 20px; }
.about__text > p:first-child { font-size: var(--fs-lead); line-height: var(--lh-lead); color: var(--color-text); }
.about__text > p + p { color: var(--color-text-muted); }
.company { margin-top: var(--space-7); }
.company > p { margin-top: var(--space-4); }
.company .rows { margin-top: var(--space-6); }

/* Apps (§7.4) */
.apps__title { max-width: 18ch; }
.apps__lead { margin-top: var(--space-5); max-width: 34rem; color: var(--color-text-muted); }
.apps .card { margin-top: var(--space-7); }
.app-list { list-style: none; }
.app-list > li + li { margin-top: var(--space-6); padding-top: var(--space-6); border-top: 1px solid var(--color-hairline); }
.app-list__header { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px 16px; }
.app-list h3 { font-weight: var(--fw-bold); letter-spacing: -0.02em; }
.app-list p { margin-top: var(--space-2); color: var(--color-text-muted); }

/* Principles (§7.5) */
.principles { list-style: none; counter-reset: principle; margin-top: var(--space-7); }
.principles > li {
  counter-increment: principle;
  border-top: 1px solid var(--color-hairline);
  padding-block: var(--space-6);
}
.principles > li::before {
  content: counter(principle, decimal-leading-zero);
  content: counter(principle, decimal-leading-zero) / "";
  display: block;
  margin-bottom: var(--space-3);
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-eyebrow);
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
}
.principles p { margin-top: var(--space-2); color: var(--color-text-muted); }
@media (min-width: 768px) {
  .principles > li { display: grid; grid-template-columns: 56px 1fr; align-items: baseline; }
  .principles > li::before { margin-bottom: 0; }
}

/* Contact (§7.6) */
.contact__lead { margin-top: var(--space-5); max-width: 32rem; color: var(--color-text-muted); }
.contact__meta { margin-top: var(--space-5); }

/* Card (§8.4): used exactly once */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-card);
  padding: 28px;
}
@media (min-width: 480px)  { .card { padding: 32px; } }
@media (min-width: 768px)  { .card { padding: 40px; } }
@media (min-width: 1024px) { .card { padding: 56px; } }

.card__note { margin-top: var(--space-6); }

/* Badge (§8.5) */
.badge {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 10px;
  border-radius: var(--radius-chip);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text);
  background: transparent;
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-eyebrow);
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Hairline rows: company facts (§7.3) */
.rows > div { border-top: 1px solid var(--color-hairline); padding-block: var(--space-5); }
.rows dd { margin-top: var(--space-2); }
@media (min-width: 768px) {
  .rows > div { display: grid; grid-template-columns: 180px 1fr; gap: var(--space-6); align-items: baseline; }
  .rows dd { margin-top: 0; }
}
.facts dd { color: var(--color-text); }

/* Footer (§7.7) */
.footer {
  border-top: 1px solid var(--color-hairline);
  padding-block: 48px 56px;
  background: var(--color-page);
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}
.footer__row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; }
@media (max-width: 767.98px) {
  .footer__row { flex-direction: column; align-items: flex-start; }
}
.footer__brand { display: inline-flex; align-items: center; gap: 10px; color: var(--color-text); font-weight: var(--fw-semibold); }
.footer__brand svg { color: var(--color-text-muted); }
.footer__list { list-style: none; display: flex; flex-wrap: wrap; column-gap: 24px; }
.footer__legal { margin-top: var(--space-5); }
.footer__note { margin-top: var(--space-2); }

/* Legal, support and 404 pages (§7.8–7.11) */
.page { padding-block: 64px 96px; }
@media (min-width: 768px) {
  .page { padding-block: 96px 128px; }
}
.page > * { max-width: var(--measure); }
.page__title {
  margin-top: var(--space-5);
  font-size: var(--fs-h2);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-h2);
}
.page__meta { margin-top: var(--space-4); }
.page__intro { margin-top: var(--space-6); }
.page__lead { margin-top: var(--space-5); color: var(--color-text-muted); }
.page__action { margin-top: var(--space-6); }
.page__action + .small { margin-top: var(--space-4); }
.page__body { margin-top: var(--space-5); }

.prose > * + * { margin-top: var(--space-4); }
.prose > h2 { margin-top: var(--space-7); font-size: var(--fs-h3); letter-spacing: var(--ls-h3); }
.prose > h3 { margin-top: var(--space-6); }
.prose ul { list-style: disc; padding-left: 1.25em; }
.prose li { max-width: var(--measure); }
.prose li + li { margin-top: var(--space-2); }