/* ==========================================================================
   Acosta-Li — design system
   Palette shared with Mù Coffee ATX: moss and pine greens on warm paper.
   The "stain" block is the signature device — it wipes in behind the words
   that carry the weight.
   ========================================================================== */

/* --- Tokens ------------------------------------------------------------- */
:root {
  --ink:          #121814;
  --ink-soft:     #1B241E;
  --pine:         #2E3D2F;
  --pine-deep:    #1E2B21;
  --moss:         #425743;   /* Mù Coffee brand green */
  --moss-soft:    #8FBE9B;   /* accent text on dark grounds */
  --paper:        #F8F7F4;
  --paper-dim:    #E8E5DC;
  --slate:        #6A7168;

  --display: "Bricolage Grotesque", "Arial Black", sans-serif;
  --body:    "Instrument Sans", system-ui, -apple-system, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, "SF Mono", monospace;

  --gut:      clamp(1.25rem, 4vw, 4rem);   /* page side padding */
  --stack:    clamp(4.5rem, 11vw, 9.5rem); /* vertical rhythm between bands */
  --measure:  62ch;

  --ease: cubic-bezier(0.22, 0.8, 0.28, 1);
}

/* --- Reset -------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.6;
  font-synthesis-weight: none;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; font-family: var(--display); font-weight: 800; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

/* --- Type ---------------------------------------------------------------- */
.display {
  font-family: var(--display);
  font-weight: 800;
  line-height: 0.87;
  letter-spacing: -0.038em;
  text-wrap: balance;
}
.d-xl { font-size: clamp(3rem, 10.5vw, 8.5rem); }
.d-lg { font-size: clamp(2.4rem, 6.5vw, 5rem); }
.d-md { font-size: clamp(1.65rem, 3.2vw, 2.6rem); line-height: 0.98; letter-spacing: -0.028em; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #3D5243;
  margin: 0 0 1.5rem;
}
.on-dark .eyebrow { color: var(--moss-soft); }
.eyebrow--quiet { color: var(--slate); }

.lede {
  font-size: clamp(1.1rem, 0.98rem + 0.6vw, 1.45rem);
  line-height: 1.45;
  max-width: 34ch;
  text-wrap: pretty;
}
.prose { max-width: var(--measure); color: var(--slate); text-wrap: pretty; }
.prose strong { color: inherit; font-weight: 600; }
.on-dark .prose { color: rgba(247, 244, 250, 0.72); }
.on-dark .prose strong { color: var(--paper); }

/* --- Signature: the stain ------------------------------------------------ */
/* A block of moss wipes in behind the word, then the word sits on top. */
.stain {
  position: relative;
  display: inline-block;
  isolation: isolate;
  color: var(--paper);
}
.stain::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0.1em -0.14em 0.09em -0.14em;
  background: var(--moss);
  transform: scaleX(0);
  transform-origin: left center;
  animation: stain-wipe 0.72s var(--ease) 0.28s forwards;
}
@keyframes stain-wipe { to { transform: scaleX(1); } }

/* Stains below the fold wait for the reveal observer to arm them. */
.stain--armed::before { animation: none; transform: scaleX(0); }
.is-revealed .stain--armed::before { animation: stain-wipe 0.6s var(--ease) 0.12s forwards; }

/* --- Layout -------------------------------------------------------------- */
.shell { max-width: 1320px; margin-inline: auto; padding-inline: var(--gut); }
.band { padding-block: var(--stack); }
.band--dark { background: var(--ink); color: var(--paper); }
.band--pine { background: var(--pine); color: var(--paper); }
.rule { height: 1px; background: currentColor; opacity: 0.16; border: 0; margin: 0; }

/* Asymmetric two-column: heading rail + content. */
.split {
  display: grid;
  gap: clamp(2rem, 5vw, 4.5rem);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 62rem) {
  .split { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); }
  .split--wide-left { grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); }
}

/* --- Nav ----------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--ink);
  color: var(--paper);
}
.nav__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;              /* links drop to a second row on narrow screens */
  gap: 0.35rem 1.25rem;
  min-height: 4.25rem;
  padding-block: 0.6rem;
  max-width: 1320px;
  margin-inline: auto;
  padding-inline: var(--gut);
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--display);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  margin-right: auto;
}
.wordmark::before {
  content: "";
  width: 0.72rem;
  height: 0.98rem;
  background: var(--moss-soft);
  flex: none;
}
.nav__links { display: flex; gap: clamp(0.9rem, 3vw, 1.75rem); align-items: center; }
.nav__links a {
  font-size: clamp(0.8rem, 0.75rem + 0.25vw, 0.9rem);
  text-decoration: none;
  color: rgba(247, 244, 250, 0.68);
  transition: color 0.18s var(--ease);
}
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--paper); }

/* --- Buttons ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.5rem;
  font-family: var(--body);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  background: var(--moss);
  color: var(--paper);
  transition: transform 0.18s var(--ease), background 0.18s var(--ease);
}
.btn:hover { transform: translate(-2px, -2px); background: #4E6950; }
.btn--ghost { background: transparent; border-color: currentColor; color: inherit; }
.btn--ghost:hover { background: currentColor; color: var(--ink); }
.on-dark .btn--ghost:hover { color: var(--ink); }
.btn__arrow { font-family: var(--mono); font-weight: 400; }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.85rem; }

/* --- Hero ---------------------------------------------------------------- */
.hero {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(2.5rem, 6vw, 4.5rem) 0;
  overflow: hidden;
}
.hero__title { max-width: 15ch; }
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  margin-top: clamp(2rem, 5vw, 3rem);
  align-items: center;
}
.hero__foot {
  margin-top: clamp(3.5rem, 8vw, 6rem);
  border-top: 1px solid rgba(247, 244, 250, 0.16);
}

/* --- "Now" block: current engagements, above the fold -------------------- */
.now {
  margin-top: clamp(2.25rem, 5vw, 3.25rem);
  border-left: 3px solid var(--moss-soft);
  padding-left: clamp(1.1rem, 2.5vw, 1.75rem);
  max-width: 58ch;
}
.now__k {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--moss-soft);
  margin-bottom: 0.9rem;
}
.now__item {
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.15rem);
  line-height: 1.45;
  color: rgba(247, 244, 250, 0.72);
  text-wrap: pretty;
}
.now__item + .now__item { margin-top: 0.7rem; }
.now__item strong { color: var(--paper); font-weight: 600; }

/* --- Interior page header ------------------------------------------------ */
.page-head {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(3rem, 7vw, 5.5rem) clamp(3.5rem, 8vw, 6rem);
}
.page-head__title { max-width: 16ch; }

/* --- Engagement models --------------------------------------------------- */
.models { display: grid; gap: 1px; background: rgba(247, 244, 250, 0.2); border-block: 1px solid rgba(247, 244, 250, 0.2); }
@media (min-width: 48rem) { .models { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.model { background: var(--pine); padding: clamp(1.75rem, 3.5vw, 2.75rem) clamp(1.5rem, 3vw, 2.5rem); }
.model h3 { font-size: clamp(1.35rem, 2.4vw, 1.9rem); letter-spacing: -0.028em; }
.model__meta {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--moss-soft);
  margin: 0.6rem 0 1rem;
}

/* --- Proof metrics ------------------------------------------------------- */
.metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
}
@media (min-width: 62rem) { .metrics { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.metric {
  padding: clamp(1.5rem, 3vw, 2.25rem) clamp(1rem, 2vw, 1.75rem) clamp(1.75rem, 3vw, 2.5rem) 0;
  border-top: 1px solid rgba(247, 244, 250, 0.16);
  border-right: 1px solid rgba(247, 244, 250, 0.16);
}
.metric:nth-child(2n) { padding-right: 0; border-right: 0; }
@media (min-width: 62rem) {
  .metric { border-top: 0; }
  .metric:nth-child(2n) { padding-right: clamp(1rem, 2vw, 1.75rem); border-right: 1px solid rgba(247, 244, 250, 0.16); }
  .metric:last-child { padding-right: 0; border-right: 0; }
}
.metric__value {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
}
.metrics__note {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(247, 244, 250, 0.4);
  padding-block: 1.25rem 1.75rem;
  border-top: 1px solid rgba(247, 244, 250, 0.12);
  margin-top: clamp(1rem, 2vw, 1.5rem);
}

.metric__label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(247, 244, 250, 0.55);
  margin-top: 0.85rem;
  line-height: 1.5;
}

/* --- Service blocks ------------------------------------------------------ */
.services { display: grid; gap: 1px; background: var(--paper-dim); border-block: 1px solid var(--paper-dim); }
@media (min-width: 48rem) { .services { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.service {
  background: var(--paper);
  padding: clamp(2rem, 4vw, 3.25rem) clamp(1.5rem, 3vw, 2.75rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background 0.25s var(--ease);
}
.service:hover { background: #fff; }
.service__num {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--moss);
}
.service h3 { font-size: clamp(1.3rem, 2.2vw, 1.75rem); letter-spacing: -0.025em; line-height: 1.05; }
.service p { color: var(--slate); font-size: 0.98rem; }

/* --- Process (a real sequence, so it earns its numbers) ------------------ */
.steps { display: grid; gap: clamp(2rem, 4vw, 3rem); counter-reset: step; }
@media (min-width: 56rem) { .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.step { border-top: 2px solid var(--moss-soft); padding-top: 1.5rem; }
.step__k {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.6;
}
.step h3 { font-size: clamp(1.5rem, 2.6vw, 2rem); letter-spacing: -0.03em; margin: 0.75rem 0 0.9rem; }
.step p { font-size: 0.98rem; }

/* --- Work cards ---------------------------------------------------------- */
/* align-items:start so a short case doesn't inflate to match a long neighbour —
   cards size to their own content and the bottoms stay honest. */
.work { display: grid; gap: clamp(1.5rem, 3vw, 2rem); align-items: start; }
@media (min-width: 56rem) { .work { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.case {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(1.75rem, 3.5vw, 2.75rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.case--pine { background: var(--pine); }
.case--moss { background: var(--moss); color: var(--paper); }
.case--moss .case__client, .case--moss .case__body { color: rgba(248, 247, 244, 0.75); }
.case__client {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(247, 244, 250, 0.6);
}
.case h3 { font-size: clamp(1.5rem, 2.8vw, 2.15rem); letter-spacing: -0.032em; line-height: 1.02; }
.case__body { color: rgba(247, 244, 250, 0.75); font-size: 0.98rem; }
.case__link {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  opacity: 0.7;
  transition: opacity 0.18s var(--ease);
}
.case__link:hover { opacity: 1; }

.case__tags {
  margin-top: auto;
  padding-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}
.case__tags span { border: 1px solid currentColor; opacity: 0.55; padding: 0.2rem 0.55rem; }

/* --- Photos: hard-cornered, offset moss block ---------------------------- */
.photo-frame { margin: 0; max-width: 22rem; }
.photo-frame img { width: 100%; height: auto; display: block; }
/* Offset block wraps only the image, so captions clear it. */
.pf-img { position: relative; display: block; isolation: isolate; }
.pf-img::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translate(14px, 14px);
  background: var(--moss);
  z-index: -1;
}
.photo-frame figcaption {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate);
  margin-top: 1.4rem;
}
.on-dark .photo-frame figcaption { color: rgba(247, 244, 250, 0.5); }
.photo-frame--wide { max-width: 30rem; }

/* --- Checklist ----------------------------------------------------------- */
.checklist li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: 1.1rem;
  color: var(--slate);
  text-wrap: pretty;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.6rem;
  height: 0.6rem;
  background: var(--moss);
}
.checklist strong { color: var(--ink); font-weight: 600; }
.on-dark .checklist li { color: rgba(247, 244, 250, 0.72); }
.on-dark .checklist strong { color: var(--paper); }

/* --- Roster: engagements that don't need a full case ---------------------- */
.roster { margin-top: clamp(2.5rem, 5vw, 3.5rem); border-top: 1px solid var(--paper-dim); padding-top: 1.75rem; }
.roster__k {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 1.25rem;
}
.roster__list { display: grid; gap: 0.65rem 2.5rem; font-size: 0.95rem; color: var(--slate); }
@media (min-width: 48rem) { .roster__list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.roster__list strong { color: var(--ink); font-weight: 600; }

/* --- CTA ----------------------------------------------------------------- */
.cta { background: var(--moss); color: var(--paper); }
.cta h2 { max-width: 18ch; }
.cta .prose { color: rgba(248, 247, 244, 0.82); }

/* --- Footer -------------------------------------------------------------- */
.footer { background: var(--ink); color: rgba(247, 244, 250, 0.6); padding-block: clamp(3rem, 6vw, 4.5rem); font-size: 0.9rem; }
.footer a { color: var(--paper); text-decoration: none; border-bottom: 1px solid rgba(247, 244, 250, 0.25); }
.footer a:hover { border-bottom-color: var(--moss); }
.footer__grid { display: grid; gap: 2rem; }
@media (min-width: 48rem) { .footer__grid { grid-template-columns: 2fr 1fr 1fr; } }
.footer__grid h4 { font-family: var(--mono); font-weight: 500; font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: rgba(247, 244, 250, 0.45); margin-bottom: 1rem; }
.footer__grid li + li { margin-top: 0.5rem; }

/* --- Motion -------------------------------------------------------------- */
/* Scoped to .js so the page stays fully readable if the script never runs. */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.js .reveal.is-revealed { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }

/* --- Quality floor ------------------------------------------------------- */
:focus-visible { outline: 3px solid #5E8A68; outline-offset: 3px; }
.skip {
  position: absolute; left: -9999px;
  background: var(--moss); color: var(--paper);
  padding: 0.75rem 1.25rem; z-index: 100; font-weight: 600;
}
.skip:focus { left: var(--gut); top: 0.5rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  .stain::before, .stain--armed::before { transform: scaleX(1); }
}