/* SEEQUENCE — shared foundation
   Tokens mirror the portfolio (wmtm.github.io/Blacksheep): ink/paper palette,
   Bricolage Grotesque display + Inter body, coral/violet accents. */

@font-face {
  font-family: "Bricolage Grotesque";
  src: url("../fonts/bricolage-grotesque.woff2") format("woff2");
  font-weight: 200 800;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --ink: #0b0b0c;
  --ink-soft: #17171a;
  --paper: #f6f3ee;
  --paper-dim: #eae5db;
  --paper-60: rgb(246 243 238 / 0.6);
  --paper-40: rgb(246 243 238 / 0.62);
  --line: #2a2a2e;
  --coral: #ff4b6e;
  --violet: #6c4cff;

  --font-display: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, sans-serif;

  --u: 42px;               /* the one spacing unit everything is built from */
  --u-2: calc(var(--u) / 2);
  --u-4: calc(var(--u) / 4);
  --gutter: clamp(var(--u-2) - 3px, 4vw, var(--u) * 1.5);

  --t: 420ms;
  --t-slow: 840ms;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);        /* out-expo */
  --ease-io: cubic-bezier(0.76, 0, 0.24, 1);    /* in-out-quart */

  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--ink);
  color: var(--paper);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100svh;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01" 1, "cv05" 1;
  overflow-x: clip;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 0.95;
  margin: 0;
}

em.accent {
  font-style: italic;
  font-synthesis: style;
}

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

:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
}

.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  left: var(--u-2);
  top: var(--u-2);
  z-index: 1000;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-display);
  transform: translateY(-200%);
  transition: transform var(--t) var(--ease);
}
.skip-link:focus {
  transform: none;
}

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-40);
  margin: 0;
}

/* ---------- Grain ---------- */
.grain {
  position: fixed;
  inset: -50%;
  z-index: 900;
  pointer-events: none;
  opacity: 0.06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='168' height='168'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.842' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 4.2s steps(6) infinite;
}
@keyframes grain {
  0% { transform: translate(0, 0); }
  17% { transform: translate(-3%, 2%); }
  33% { transform: translate(2%, -4%); }
  50% { transform: translate(-4%, -1%); }
  67% { transform: translate(3%, 3%); }
  83% { transform: translate(-1%, 4%); }
  100% { transform: translate(0, 0); }
}

/* ---------- Brand lock-up ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 15px;
  transition: opacity var(--t) var(--ease);
}
.brand img {
  width: 26px;
  height: 26px;
  display: block;
  view-transition-name: brand-mark;
  transition: transform var(--t) var(--ease);
}
.brand:hover img {
  transform: rotate(-4.2deg) scale(1.08);
}

/* ---------- Pill header (shared shape) ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  padding: 14px var(--gutter) 0;
  pointer-events: none;
}
.site-header__bar {
  pointer-events: auto;
  max-width: 1600px;
  margin: 0 auto;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 8px 6px 16px;
  border: 1px solid rgb(42 42 46 / 0.7);
  border-radius: 999px;
  background: rgb(11 11 12 / 0.7);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper);
  background: transparent;
  cursor: pointer;
  transition: border-color var(--t) var(--ease), background-color var(--t) var(--ease), color var(--t) var(--ease);
}
.pill:hover {
  border-color: var(--paper);
}
.pill .num {
  color: var(--paper-40);
  font-variant-numeric: tabular-nums;
}
.pill--solid {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0;
  text-transform: none;
  min-height: 48px;
  padding: 0 22px;
}
.pill--solid:hover {
  background: var(--coral);
  border-color: var(--coral);
}
.pill .arrow {
  display: inline-block;
  transition: transform var(--t) var(--ease);
}
.pill:hover .arrow {
  transform: translate(3px, -3px);
}
.pill:hover .arrow--down {
  transform: translateY(3px);
}
.pill:hover .arrow--right {
  transform: translateX(4px);
}

/* ---------- Custom cursor (fine pointers only, set up in common.js) ---------- */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  border-radius: 999px;
  z-index: 9999;
  opacity: 0;
  will-change: transform;
}
.cursor-dot {
  width: 8px;
  height: 8px;
  margin: -4px 0 0 -4px;
  background: var(--paper);
  mix-blend-mode: difference;
  transition: opacity 0.2s, width var(--t) var(--ease), height var(--t) var(--ease), margin var(--t) var(--ease);
}
.cursor-ring {
  width: 42px;
  height: 42px;
  margin: -21px 0 0 -21px;
  border: 1px solid rgb(246 243 238 / 0.55);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  transition: opacity 0.2s, width var(--t) var(--ease), height var(--t) var(--ease), margin var(--t) var(--ease),
    background-color var(--t) var(--ease), border-color var(--t) var(--ease);
}
html.has-cursor .cursor-dot,
html.has-cursor .cursor-ring {
  opacity: 1;
}
html.has-cursor.cursor-out .cursor-dot,
html.has-cursor.cursor-out .cursor-ring {
  opacity: 0;
}
html.has-cursor,
html.has-cursor * {
  cursor: none !important;
}
html[data-cursor="link"] .cursor-ring {
  width: 58px;
  height: 58px;
  margin: -29px 0 0 -29px;
  border-color: var(--paper);
}
html[data-cursor="label"] .cursor-ring {
  width: 84px;
  height: 84px;
  margin: -42px 0 0 -42px;
  background: var(--paper);
  border-color: var(--paper);
}
html[data-cursor="label"] .cursor-dot,
html[data-cursor="soon"] .cursor-dot {
  opacity: 0;
}
html[data-cursor="soon"] .cursor-ring {
  width: 84px;
  height: 84px;
  margin: -42px 0 0 -42px;
  background: rgb(11 11 12 / 0.5);
  border-color: rgb(246 243 238 / 0.3);
  color: var(--paper);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
html[data-cursor="hide"] .cursor-ring {
  opacity: 0;
}

/* ---------- Easter egg: the flock ---------- */
.flock {
  position: fixed;
  inset: 0;
  z-index: 950;
  pointer-events: none;
  overflow: hidden;
}
.flock img {
  position: absolute;
  left: 0;
  width: var(--s);
  height: var(--s);
  top: var(--y);
  transform: translateX(-20vw);
  animation: flock-run var(--d) linear var(--delay) forwards;
  filter: drop-shadow(0 6px 12px rgb(0 0 0 / 0.5));
}
@keyframes flock-run {
  0% { transform: translate(-20vw, 0) rotate(0); }
  10% { transform: translate(-6vw, -18px) rotate(-4.2deg); }
  20% { transform: translate(8vw, 0) rotate(0); }
  30% { transform: translate(22vw, -18px) rotate(4.2deg); }
  40% { transform: translate(36vw, 0) rotate(0); }
  50% { transform: translate(50vw, -18px) rotate(-4.2deg); }
  60% { transform: translate(64vw, 0) rotate(0); }
  70% { transform: translate(78vw, -18px) rotate(4.2deg); }
  80% { transform: translate(92vw, 0) rotate(0); }
  90% { transform: translate(106vw, -18px) rotate(-4.2deg); }
  100% { transform: translate(120vw, 0) rotate(0); }
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--u) + env(safe-area-inset-bottom));
  z-index: 960;
  transform: translate(-50%, 140%);
  padding: 14px 22px;
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  box-shadow: 0 20px 60px rgb(0 0 0 / 0.5);
  transition: transform var(--t-slow) var(--ease);
  max-width: calc(100vw - var(--u));
  overflow: hidden;
  text-overflow: ellipsis;
}
.toast.is-in {
  transform: translate(-50%, 0);
}

/* ---------- View transitions (cross-document, progressive) ---------- */
@view-transition {
  navigation: auto;
}
::view-transition-old(root) {
  animation: vt-out var(--t) var(--ease-io) both;
}
::view-transition-new(root) {
  animation: vt-in 620ms var(--ease-io) both;
}
::view-transition-group(brand-mark),
::view-transition-group(story-title) {
  animation-duration: 620ms;
  animation-timing-function: var(--ease);
}
@keyframes vt-out {
  to { opacity: 0; transform: scale(0.96); filter: blur(4px); }
}
@keyframes vt-in {
  from { clip-path: inset(100% 0 0 0); }
  to { clip-path: inset(0 0 0 0); }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  @view-transition {
    navigation: none;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .grain {
    animation: none;
  }
  .cursor-dot,
  .cursor-ring {
    display: none;
  }
}