/* ==========================================================================
   Components — reusable UI: buttons, header/nav, cards, badges, footer
   Shared by index.html and the legal pages.
   ========================================================================== */

/* ---------- Buttons ---------- */

.btn {
  --btn-pad-y: 0.8rem;
  --btn-pad-x: 1.35rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 2.875rem;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out),
    background-color var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out);
}
.btn svg { width: 1.05em; height: 1.05em; transition: transform var(--dur-base) var(--ease-out); }
.btn:hover svg.icon-arrow { transform: translateX(3px); }
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--gradient-accent);
  color: var(--color-on-accent);
  box-shadow: 0 8px 28px -10px rgba(0, 212, 255, 0.55);
}
.btn--primary:hover {
  color: var(--color-on-accent);
  box-shadow: 0 10px 36px -8px rgba(0, 212, 255, 0.7);
  transform: translateY(-1px);
}

.btn--ghost {
  background: rgba(148, 163, 184, 0.06);
  border-color: var(--color-border-strong);
  color: var(--color-text);
}
.btn--ghost:hover {
  color: var(--color-text);
  background: rgba(0, 212, 255, 0.08);
  border-color: var(--color-border-accent);
}

.btn--sm { --btn-pad-y: 0.55rem; --btn-pad-x: 1rem; min-height: 2.5rem; }
.btn--lg { --btn-pad-y: 0.95rem; --btn-pad-x: 1.6rem; font-size: var(--text-base); }

.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ---------- Header & navigation ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background-color var(--dur-base), border-color var(--dur-base), backdrop-filter var(--dur-base);
}
.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(8, 15, 29, 0.78);
  border-bottom-color: var(--color-border);
  -webkit-backdrop-filter: var(--blur-glass);
  backdrop-filter: var(--blur-glass);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
  min-width: 0;
}
.brand:hover { color: var(--color-text); }
.brand__mark { width: 2.25rem; height: 2.25rem; }
.brand__name {
  font-size: clamp(0.9rem, 0.8rem + 0.5vw, 1.05rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.brand__name strong { font-weight: 700; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  background: rgba(148, 163, 184, 0.06);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 1.125rem;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-fast);
}
.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before,
.nav-toggle__bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

/* Without JS the toggle is useless, so hide it and show the nav inline */
html:not(.js) .nav-toggle { display: none; }

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.site-nav__link {
  display: block;
  padding: var(--space-3) var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--dur-fast), background-color var(--dur-fast);
}
.site-nav__link:hover,
.site-nav__link[aria-current="true"],
.site-nav__link[aria-current="page"] { color: var(--color-text); }
.site-nav__link[aria-current="true"] { background: rgba(0, 212, 255, 0.06); }

.site-nav__cta { margin-top: var(--space-3); }

/* Mobile drawer (JS on, below desktop breakpoint) */
@media (max-width: 63.99em) {
  .js .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: var(--space-4) var(--gutter) var(--space-8);
    /* Solid, no backdrop-filter: nesting it inside the header's filter breaks compositing in Chromium */
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.7);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), visibility 0s linear var(--dur-base);
  }
  .js .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), visibility 0s;
  }
  .js .site-nav__link { font-size: var(--text-md); padding: var(--space-3) var(--space-3); }
  .js .site-nav__cta .btn { width: 100%; }

  html:not(.js) .site-header__inner { flex-wrap: wrap; padding-block: var(--space-3); }
  html:not(.js) .site-nav { width: 100%; }
  html:not(.js) .site-nav__list { flex-direction: row; flex-wrap: wrap; }
}

@media (min-width: 64em) {
  .nav-toggle { display: none; }
  .site-nav { display: flex; align-items: center; gap: var(--space-6); }
  .site-nav__list { flex-direction: row; align-items: center; gap: var(--space-1); }
  .site-nav__link { padding: var(--space-2) var(--space-3); }
  .site-nav__cta { margin-top: 0; }
}

body.nav-locked { overflow: hidden; }

/* ---------- Section heading ---------- */

.section { padding-block: var(--section-y); position: relative; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 1px;
  background: var(--gradient-accent);
}

.section-head { max-width: 44rem; margin-bottom: var(--space-12); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-head h2 { font-size: var(--text-2xl); }
.section-head p:not(.eyebrow) {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-md);
}

/* ---------- Glass card ---------- */

.card {
  position: relative;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  -webkit-backdrop-filter: var(--blur-glass);
  backdrop-filter: var(--blur-glass);
}

@media (min-width: 40em) {
  .card { padding: var(--space-8); }
}

.icon-tile {
  display: inline-grid;
  place-items: center;
  width: 2.875rem;
  height: 2.875rem;
  color: var(--color-accent);
  background: linear-gradient(145deg, rgba(0, 212, 255, 0.14), rgba(59, 130, 246, 0.08));
  border: 1px solid rgba(0, 212, 255, 0.22);
  border-radius: 0.75rem;
  flex-shrink: 0;
}
.icon-tile svg { width: 1.375rem; height: 1.375rem; }

/* ---------- Badge ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.75rem;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-muted);
  background: rgba(148, 163, 184, 0.06);
}
.badge--soon {
  color: var(--color-warning);
  border-color: rgba(251, 191, 36, 0.32);
  background: var(--color-warning-soft);
}
.badge--soon::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.18);
}

/* ---------- Check list ---------- */

.check-list { display: grid; gap: var(--space-3); padding: 0; list-style: none; }
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: var(--color-text);
}
.check-list svg {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.15rem;
  color: var(--color-accent);
}

/* ---------- Footer ---------- */

.site-footer {
  padding-block: var(--space-16) var(--space-8);
  border-top: 1px solid var(--color-border);
  background: linear-gradient(to bottom, rgba(17, 28, 46, 0.5), rgba(8, 15, 29, 0.9));
  font-size: var(--text-sm);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-10);
}

.site-footer__brand p { margin-top: var(--space-4); color: var(--color-text-muted); max-width: 22rem; }
.site-footer__legal-name { color: var(--color-text); font-weight: 600; }

.site-footer h2 {
  margin-bottom: var(--space-4);
  color: var(--color-text);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footer-links { display: grid; gap: var(--space-2); padding: 0; list-style: none; }
.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--dur-fast);
}
.footer-links a:hover { color: var(--color-accent); }

.site-footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-subtle);
}

@media (min-width: 40em) {
  .site-footer__grid { grid-template-columns: repeat(3, 1fr); }
  .site-footer__brand { grid-column: 1 / -1; }
  .site-footer__bottom { flex-direction: row; justify-content: space-between; }
}

@media (min-width: 64em) {
  .site-footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .site-footer__brand { grid-column: auto; }
}