/* Reusable components: nav, buttons, cards, accordion, theme toggle, etc.
   Scoped under .lusi to avoid bleeding into wp-admin or other pages. */

/* ---------- Containers ---------- */
.lusi .l-container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--section-x);
}
.lusi .l-narrow {
  max-width: var(--content-narrow);
  margin-inline: auto;
}
.lusi .l-wide {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--section-x);
}

/* ---------- Section utilities ---------- */
.lusi .l-section {
  padding-block: var(--section-y);
  position: relative;
}
.lusi .l-section--bare { padding-block: 0; }
.lusi .l-section--soft { background: var(--bg-soft); }
.lusi .l-section--muted { background: var(--bg-muted); }
.lusi .l-section--dark {
  background: #000;
  color: #f5f5f7;
  /* Always-dark section: hardcode token values so muted/soft text stays
     readable when the page itself is in dark mode (where --hairline-strong
     would otherwise resolve to #3a3a3c on #000 — invisible). */
  --text: #f5f5f7;
  --text-muted: #c7c7cc;
  --text-soft: #a1a1a6;
  --bg: #000;
  --bg-soft: #0a0a0c;
  --bg-muted: #1d1d1f;
  --bg-elev: #0a0a0c;
  --hairline: #2c2c2e;
  --hairline-strong: #48484a;
}

/* ---------- Typography helpers ---------- */
.lusi .l-display {
  font-size: var(--fs-display);
  font-weight: var(--fw-bold);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  color: var(--text);
}
.lusi .l-h2 {
  font-size: var(--fs-h2);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-heading);
}
.lusi .l-h3 {
  font-size: var(--fs-h3);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-heading);
}
.lusi .l-lead {
  font-size: var(--fs-lead);
  line-height: 1.5;
  color: var(--text-muted);
  font-weight: var(--fw-regular);
  letter-spacing: var(--ls-body);
}
.lusi .l-label {
  font-size: var(--fs-label);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--accent);
}
.lusi .l-section--dark .l-label { color: var(--accent); }
.lusi .l-eyebrow {
  display: inline-block;
  margin-bottom: var(--sp-4);
}
.lusi .l-text-center { text-align: center; }
.lusi .l-mt-2 { margin-top: var(--sp-2); }
.lusi .l-mt-4 { margin-top: var(--sp-4); }
.lusi .l-mt-6 { margin-top: var(--sp-6); }
.lusi .l-mt-8 { margin-top: var(--sp-8); }
.lusi .l-mt-12 { margin-top: var(--sp-12); }
.lusi .l-mt-16 { margin-top: var(--sp-16); }

/* ---------- Buttons ---------- */
.lusi .l-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 14px 28px;
  border-radius: var(--r-pill);
  font-size: 17px;
  font-weight: var(--fw-medium);
  letter-spacing: -0.005em;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  transition:
    background var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    transform var(--dur-base) var(--ease-out-expo);
  white-space: nowrap;
  user-select: none;
  position: relative;
  isolation: isolate;
}
.lusi .l-btn--primary {
  background: var(--accent);
  color: var(--accent-on);
  box-shadow: var(--shadow-sm);
}
.lusi .l-btn--primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.lusi .l-btn--primary:active {
  background: var(--accent-active);
  transform: translateY(0);
}
.lusi .l-btn--secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--hairline);
}
.lusi .l-btn--secondary:hover {
  background: color-mix(in oklab, var(--text) 6%, transparent);
  border-color: var(--hairline-strong);
}
.lusi .l-btn--ghost {
  color: var(--accent);
  padding-inline: var(--sp-3);
}
.lusi .l-btn--ghost:hover {
  background: var(--accent-soft);
}
.lusi .l-btn--lg {
  padding: 16px 32px;
  font-size: 18px;
}
.lusi .l-btn--sm {
  padding: 10px 18px;
  font-size: 15px;
}
.lusi .l-btn .l-arrow {
  display: inline-block;
  transition: transform var(--dur-base) var(--ease-out-expo);
}
.lusi .l-btn:hover .l-arrow { transform: translateX(4px); }

.lusi .l-btn-row {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
}
.lusi .l-btn-row--center { justify-content: center; }

/* magnetic effect — JS adds inline transform; we just smooth it */
.lusi .l-btn[data-magnetic] {
  transition: transform var(--dur-base) var(--ease-spring),
              background var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}

/* ---------- Theme toggle button ---------- */
.lusi .l-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--r-pill);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text);
  position: relative;
  overflow: hidden;
  transition: background var(--dur-fast) var(--ease-out);
}
.lusi .l-toggle:hover {
  background: color-mix(in oklab, var(--text) 8%, transparent);
}
.lusi .l-toggle svg {
  width: 18px;
  height: 18px;
  transition: transform var(--dur-base) var(--ease-spring),
              opacity var(--dur-fast) var(--ease-out);
}
.lusi .l-toggle .icon-sun  { display: none; }
.lusi .l-toggle .icon-moon { display: block; }
:root[data-theme="dark"] .lusi .l-toggle .icon-sun  { display: block; }
:root[data-theme="dark"] .lusi .l-toggle .icon-moon { display: none; }

/* ---------- Sticky nav ---------- */
.lusi .l-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: color-mix(in oklab, var(--bg) 72%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid color-mix(in oklab, var(--text) 8%, transparent);
  height: 56px;
}
.lusi .l-nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}
.lusi .l-nav__brand {
  font-size: 15px;
  font-weight: var(--fw-semibold);
  letter-spacing: -0.01em;
}
.lusi .l-nav__menu {
  display: flex;
  gap: var(--sp-6);
  align-items: center;
  font-size: 14px;
  font-weight: var(--fw-regular);
}
.lusi .l-nav__menu a {
  color: var(--text);
  opacity: 0.78;
  transition: opacity var(--dur-fast) var(--ease-out);
}
.lusi .l-nav__menu a:hover { opacity: 1; }
.lusi .l-nav__cta {
  background: var(--text);
  color: var(--bg);
  padding: 7px 14px;
  border-radius: var(--r-pill);
  opacity: 1 !important; /* keep CTA bright */
  font-weight: var(--fw-medium);
  font-size: 13px;
  transition:
    background var(--dur-fast) var(--ease-out),
    transform var(--dur-base) var(--ease-out-expo);
}
.lusi .l-nav__cta:hover {
  background: var(--accent);
  color: var(--accent-on);
  transform: scale(1.04);
}
.lusi .l-nav__right {
  display: flex;
  gap: var(--sp-3);
  align-items: center;
}

@media (max-width: 720px) {
  .lusi .l-nav__menu { display: none; }
  .lusi .l-nav__menu.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--hairline);
    padding: var(--sp-4) var(--section-x);
    gap: var(--sp-3);
    align-items: flex-start;
  }
  .lusi .l-nav__burger {
    display: inline-flex;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--r-pill);
  }
}
@media (min-width: 721px) {
  .lusi .l-nav__burger { display: none; }
}

/* ---------- Card ---------- */
.lusi .l-card {
  background: var(--bg-elev);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  transition:
    transform var(--dur-base) var(--ease-out-expo),
    box-shadow var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out);
}
.lusi .l-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--hairline-strong);
}
.lusi .l-card__num {
  display: inline-flex;
  width: 44px; height: 44px;
  border-radius: var(--r-md);
  background: var(--accent-soft);
  color: var(--accent);
  align-items: center; justify-content: center;
  font-size: 17px;
  font-weight: var(--fw-bold);
  letter-spacing: 0;
  margin-bottom: var(--sp-2);
}
.lusi .l-card__title {
  font-size: 22px;
  font-weight: var(--fw-semibold);
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.lusi .l-card__body {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.55;
}

/* ---------- Accordion (FAQ) ---------- */
.lusi .l-accordion {
  border-top: 1px solid var(--hairline);
}
.lusi .l-accordion__item {
  border-bottom: 1px solid var(--hairline);
}
.lusi .l-accordion__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-6) var(--sp-1);
  text-align: left;
  font-size: 19px;
  font-weight: var(--fw-medium);
  letter-spacing: -0.01em;
  color: var(--text);
  cursor: pointer;
}
.lusi .l-accordion__btn:hover { color: var(--accent); }
.lusi .l-accordion__icon {
  width: 22px; height: 22px;
  display: inline-flex;
  align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform var(--dur-base) var(--ease-out-expo);
}
.lusi .l-accordion__btn[aria-expanded="true"] .l-accordion__icon {
  transform: rotate(45deg);
}
.lusi .l-accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-base) var(--ease-out-expo);
}
.lusi .l-accordion__panel[data-open="true"] {
  grid-template-rows: 1fr;
}
.lusi .l-accordion__panel > div {
  overflow: hidden;
  min-height: 0;
}
.lusi .l-accordion__content {
  padding: 0 var(--sp-1) var(--sp-6);
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.6;
}
.lusi .l-accordion__content :is(p) { margin: 0; }

/* ---------- Stats grid ---------- */
.lusi .l-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-12);
  text-align: center;
}
.lusi .l-stats--three { grid-template-columns: repeat(3, 1fr); }
.lusi .l-stats__item { display: flex; flex-direction: column; gap: var(--sp-2); }
.lusi .l-stats__num {
  font-size: clamp(40px, 5vw, 64px);
  font-weight: var(--fw-bold);
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.lusi .l-stats__lbl {
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: -0.005em;
}
@media (max-width: 720px) {
  .lusi .l-stats { grid-template-columns: repeat(2, 1fr); gap: var(--sp-8); }
  .lusi .l-stats--three { grid-template-columns: 1fr; gap: var(--sp-8); }
}

/* ---------- Hairline divider ---------- */
.lusi .l-hairline {
  height: 1px;
  background: var(--hairline);
  width: 100%;
  border: none;
}

/* ---------- Skeleton (for video thumbs before image loads) ---------- */
@keyframes lusi-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.lusi .l-skel {
  background: linear-gradient(
    90deg,
    var(--bg-muted) 0%,
    color-mix(in oklab, var(--bg-muted) 50%, var(--hairline)) 50%,
    var(--bg-muted) 100%);
  background-size: 200% 100%;
  animation: lusi-shimmer 1.6s linear infinite;
}
@media (prefers-reduced-motion: reduce) {
  .lusi .l-skel { animation: none; }
}