/* =========================================================================
   Peek — reusable UI: nav, buttons, cards, badges, footer
   ========================================================================= */

/* ---------- Top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition:
    background-color 0.3s var(--ease-out),
    border-color 0.3s var(--ease-out),
    backdrop-filter 0.3s var(--ease-out);
}

.topbar.is-stuck {
  background: rgba(10, 12, 15, 0.82);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line-soft);
}

.topbar__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.brand__mark {
  width: 26px;
  height: 26px;
  flex: none;
}

.topbar__nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
}

.navlink {
  padding: 0.45rem 0.75rem;
  border-radius: var(--r-sm);
  font-size: 0.88rem;
  color: var(--text-mute);
  transition:
    color 0.18s var(--ease-out),
    background-color 0.18s var(--ease-out);
}

.navlink:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.045);
}

.navlink.is-active {
  color: var(--text);
}

.navlink.is-active::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 0.45rem;
  border-radius: 50%;
  background: var(--acid);
  vertical-align: 0.12em;
}

/* Only surfaced inside the collapsed mobile menu. */
.nav-sep,
.navlink--pocket {
  display: none;
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.topbar__actions--desktop {
  margin-left: 0.5rem;
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--text-dim);
  align-items: center;
  justify-content: center;
  margin-left: auto;
}

.nav-toggle:hover {
  color: var(--text);
  border-color: var(--line-strong);
}

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

.btn {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  --btn-bd: var(--line-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.72rem 1.15rem;
  border: 1px solid var(--btn-bd);
  border-radius: var(--r-sm);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-body);
  font-size: 0.925rem;
  font-weight: 560;
  letter-spacing: -0.006em;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform 0.15s var(--ease-out),
    background-color 0.18s var(--ease-out),
    border-color 0.18s var(--ease-out),
    color 0.18s var(--ease-out),
    box-shadow 0.18s var(--ease-out);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn svg {
  flex: none;
}

.btn--primary {
  --btn-bg: var(--acid);
  --btn-fg: var(--acid-ink);
  --btn-bd: var(--acid);
  font-weight: 650;
  box-shadow: 0 10px 30px -14px rgba(204, 255, 77, 0.55);
}

.btn--primary:hover {
  --btn-bg: var(--acid-bright);
  --btn-bd: var(--acid-bright);
  box-shadow: 0 14px 34px -14px rgba(204, 255, 77, 0.7);
}

.btn--ghost {
  --btn-bg: rgba(255, 255, 255, 0.02);
  --btn-fg: var(--text);
}

.btn--ghost:hover {
  --btn-bg: rgba(255, 255, 255, 0.06);
  --btn-bd: var(--line-strong);
}

.btn--quiet {
  --btn-bd: transparent;
  --btn-fg: var(--text-dim);
  padding-inline: 0.85rem;
}

.btn--quiet:hover {
  --btn-fg: var(--text);
  --btn-bg: rgba(255, 255, 255, 0.05);
}

.btn--lg {
  padding: 0.95rem 1.6rem;
  font-size: 1rem;
}

.btn--block {
  width: 100%;
}

/* ---------- Badges & chips ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: var(--r-xs);
  background: rgba(255, 255, 255, 0.02);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-mute);
}

.badge--acid {
  border-color: var(--acid-line);
  background: var(--acid-glow);
  color: var(--acid-bright);
}

.ticks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  font-size: 0.86rem;
  color: var(--text-mute);
}

.ticks li {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.tick-mark {
  width: 14px;
  height: 14px;
  flex: none;
  color: var(--acid);
}

/* ---------- Cards ---------- */

.card {
  position: relative;
  padding: clamp(1.35rem, 2.4vw, 1.85rem);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.028), rgba(255, 255, 255, 0) 42%),
    var(--ink-880);
  transition:
    border-color 0.25s var(--ease-out),
    background-color 0.25s var(--ease-out);
}

.card:hover {
  border-color: var(--line-strong);
}

.card__icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--ink-850);
  color: var(--acid);
  margin-bottom: 1.1rem;
}

.card h3 {
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--text-mute);
  font-size: 0.94rem;
  line-height: 1.62;
}

.grid-3 {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
}

.grid-2 {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  align-items: center;
}

.grid-2--top {
  align-items: start;
}

.grid-2--wide {
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
}

@media (max-width: 1000px) {
  .grid-2--wide {
    grid-template-columns: 1fr;
  }
}

.stack-cards {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.h2-gap {
  margin-block: 1rem;
}

.ticks--roomy {
  margin-top: 1.75rem;
  gap: 0.75rem 1.5rem;
}

/* ---------- Definition rows (requirements) ---------- */

.reqs {
  display: grid;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-880);
}

.reqs__row {
  display: grid;
  grid-template-columns: minmax(9rem, 15rem) 1fr;
  gap: 0.35rem 2rem;
  padding: 1.05rem clamp(1rem, 2.5vw, 1.6rem);
  border-top: 1px solid var(--line-soft);
  align-items: baseline;
}

.reqs__row:first-child {
  border-top: 0;
}

.reqs__row dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.reqs__row dd {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.reqs__row dd span {
  display: block;
  color: var(--text-faint);
  font-size: 0.85rem;
  margin-top: 0.15rem;
}

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

.footer {
  border-top: 1px solid var(--line-soft);
  background: var(--ink-950);
  padding-block: clamp(3rem, 6vw, 4.5rem) 2rem;
}

.footer__grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: minmax(15rem, 1.4fr) repeat(auto-fit, minmax(9rem, 1fr));
  padding-bottom: 2.5rem;
}

.footer__blurb {
  color: var(--text-mute);
  font-size: 0.9rem;
  max-width: 34ch;
  margin-top: 0.9rem;
}

.footer__col h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 1rem;
}

.footer__col li + li {
  margin-top: 0.6rem;
}

.footer__col a {
  color: var(--text-dim);
  font-size: 0.92rem;
  transition: color 0.18s var(--ease-out);
}

.footer__col a:hover {
  color: var(--acid);
}

.footer__base {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line-soft);
  color: var(--text-faint);
  font-size: 0.82rem;
}

.footer__legal {
  max-width: 46ch;
}

/* ---------- Utility ---------- */

.mono {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: -0.01em;
}

.acid {
  color: var(--acid);
}

.noise-veil {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.4;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}

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

@media (max-width: 860px) {
  .topbar__nav,
  .topbar__actions--desktop {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .topbar.is-open .topbar__nav {
    position: absolute;
    left: var(--gutter);
    right: var(--gutter);
    top: calc(100% + 0.5rem);
    display: grid;
    gap: 0.15rem;
    margin: 0;
    padding: 0.75rem;
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    background: var(--ink-850);
    box-shadow: var(--shadow-window);
  }

  .topbar.is-open .navlink {
    padding: 0.7rem 0.85rem;
    font-size: 0.98rem;
  }

  .topbar.is-open .nav-sep {
    display: block;
    height: 1px;
    margin: 0.5rem 0.85rem;
    background: var(--line);
  }

  .topbar.is-open .navlink--pocket {
    display: flex;
    align-items: center;
    gap: 0.6rem;
  }

  .topbar.is-open .navlink--cta {
    justify-content: center;
    margin-top: 0.35rem;
    background: var(--acid);
    color: var(--acid-ink);
    font-weight: 650;
  }

  .topbar.is-open .navlink--cta:hover {
    background: var(--acid-bright);
    color: var(--acid-ink);
  }

  .topbar.is-open {
    background: rgba(10, 12, 15, 0.92);
    backdrop-filter: blur(18px);
    border-bottom-color: var(--line-soft);
  }
}