/* Hallmark · macrostructure: site-shell (nav: N5 Floating pill · footer: Ft2 Inline single line)
 * genre: modern-minimal · design-system: design.md · designed-as-app
 * pre-emit critique: P4 H4 E4 S4 R4 V4
 */

@import url("tokens.css");

*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: clip; }

html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 0;
  overflow-wrap: anywhere;
  min-width: 0;
}

p { margin: 0; }

a { color: inherit; }

::selection { background: var(--color-accent); color: var(--color-accent-ink); }

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  transition: none;
}

.wrap {
  max-width: 74rem;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}
.wrap--narrow { max-width: 46rem; }
.wrap--article { max-width: 40rem; }

/* ---------- Buttons: pill CTA voice ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--dur-micro) var(--ease-out), background var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--color-accent); color: var(--color-accent-ink); }
.btn-primary:hover { background: var(--color-accent-2); }

.btn-secondary { border-color: var(--color-rule); color: var(--color-ink); background: transparent; }
.btn-secondary:hover { border-color: var(--color-accent); }

/* ---------- N5 · Floating pill nav ---------- */

.nav-pill {
  position: fixed;
  inset: var(--space-md) auto auto 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: var(--space-lg);
  padding: 0.6rem 0.6rem 0.6rem 1.1rem;
  max-width: calc(100vw - 2rem);
  background: color-mix(in oklch, var(--color-paper) 78%, transparent);
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 24px -12px oklch(0% 0 0 / 0.35);
  z-index: var(--z-sticky);
}

.nav-pill__wordmark {
  display: flex;
  align-items: center;
  text-decoration: none;
  white-space: nowrap;
  height: 1.8rem;
}
.nav-pill__wordmark img {
  height: 1.8rem;
  width: auto;
  display: block;
}

.nav-pill__links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-pill__links a {
  text-decoration: none;
  color: var(--color-ink-2);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: color var(--dur-short) var(--ease-out), background var(--dur-short) var(--ease-out);
}
.nav-pill__links a:hover { color: var(--color-ink); background: var(--color-paper-2); }
.nav-pill__links a.active { color: var(--color-ink); background: var(--color-paper-2); font-weight: 700; }

.nav-pill__cta {
  font-size: 0.86rem;
  padding: 0.55rem 1.1rem;
}

/* ---------- Mobile nav toggle (hamburger → X) ---------- */

.nav-pill__toggle {
  display: none;
  width: 2.2rem;
  height: 2.2rem;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.28rem;
  background: transparent;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  padding: 0;
  transition: background var(--dur-short) var(--ease-out);
}
.nav-pill__toggle:hover { background: var(--color-paper-2); }
.nav-pill__toggle-bar {
  display: block;
  width: 1.05rem;
  height: 2px;
  border-radius: 1px;
  background: var(--color-ink);
  transition: transform var(--dur-short) var(--ease-out), opacity var(--dur-short) var(--ease-out);
}
.nav-pill.is-open .nav-pill__toggle-bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-pill.is-open .nav-pill__toggle-bar:nth-child(2) { opacity: 0; }
.nav-pill.is-open .nav-pill__toggle-bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 42rem) {
  .nav-pill { gap: var(--space-sm); padding: 0.55rem 0.55rem 0.55rem 0.9rem; }
  .nav-pill__toggle { display: inline-flex; }
  .nav-pill__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3xs);
    position: absolute;
    top: calc(100% + 0.6rem);
    left: 0;
    right: 0;
    margin: 0;
    padding: var(--space-xs);
    background: var(--color-paper);
    border: 1px solid var(--color-rule);
    border-radius: var(--radius-card);
    box-shadow: 0 8px 24px -12px oklch(0% 0 0 / 0.35);
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out);
  }
  .nav-pill__links a { display: block; padding: 0.7rem 0.8rem; }
  .nav-pill.is-open .nav-pill__links {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-pill__toggle-bar, .nav-pill__links { transition: none; }
}

/* push page content clear of the floating pill */
.page-top-spacer { height: clamp(4.5rem, 8vw, 5.5rem); }

/* ---------- Ft2 · Inline single-line footer ---------- */

.foot-line {
  border-top: 1px solid var(--color-rule);
  padding-block: var(--space-lg);
  margin-top: var(--space-3xl);
}
.foot-line p {
  color: var(--color-ink-2);
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs) var(--space-sm);
  align-items: center;
}
.foot-line .sep { opacity: 0.5; }
.foot-line a { color: var(--color-ink-2); text-decoration: none; }
.foot-line a:hover { color: var(--color-accent); text-decoration: underline; }

/* ---------- Reveal-on-load ---------- */

.reveal {
  opacity: 0;
  transform: translateY(8px);
  animation: reveal var(--dur-long) var(--ease-out) forwards;
  animation-delay: calc(var(--i, 0) * 60ms);
}
@keyframes reveal { to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .reveal { animation: reveal-reduced 150ms linear forwards; }
  @keyframes reveal-reduced { to { opacity: 1; transform: none; } }
}

/* ---------- Tags / pills (shared) ---------- */

.tag {
  display: inline-flex;
  font-size: 0.75rem;
  font-weight: 600;
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-pill);
  background: color-mix(in oklch, var(--color-accent-2) 16%, transparent);
  color: var(--color-accent-2);
}

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

.card {
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-card);
  transition: border-color var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out);
}
@media (hover: hover) and (pointer: fine) {
  .card:hover { border-color: var(--color-accent); transform: translateY(-2px); }
}

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

.tnum { font-variant-numeric: tabular-nums; }