/* ============================================================
   TOKENS
   ============================================================ */
:root {
  --color-ink:    #0F0F0E;
  --color-bone:   #F5F1EA;
  --color-card:   #EDE8DF;
  --color-line:   rgba(15, 15, 14, 0.12);
  --color-muted:  rgba(15, 15, 14, 0.6);
  --color-accent: oklch(52% 0.10 38);

  --font-sans:  'Space Grotesk', sans-serif;

  --fw-regular: 400;
  --fw-medium:  500;
  --fw-bold:    600;

  --text-h1:    clamp(2.5rem, 6vw, 5rem);
  --text-h2:    clamp(2rem, 4.5vw, 3rem);
  --text-h3:    clamp(1.125rem, 1.5vw, 1.375rem);
  --text-body:  clamp(1rem, 1.5vw, 1.125rem);
  --text-label: 0.875rem;
  --text-ui:    0.9375rem;

  --lh-heading: 1.05;
  --lh-h2:      1.1;
  --lh-body:    1.7;

  --ls-heading: -0.02em;
  --ls-label:    0.1em;

  --gutter:          clamp(1.5rem, 4vw, 4rem);
  --section-gap:     clamp(5rem, 12vw, 10rem);
  --max-width:       1280px;
  --max-width-text:  680px;
  --nav-height:      6rem;
  --eyebrow-col:     8rem;

  --radius:    6px;
  --radius-sm: 3px;

  --duration-micro: 150ms;
  --duration-base:  300ms;
  --duration-enter: 600ms;

  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ============================================================
   FONTS
   ============================================================ */
@font-face {
  font-family: 'Space Grotesk';
  src: url('../fonts/SpaceGrotesk-latin-ext.woff2') format('woff2');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Space Grotesk';
  src: url('../fonts/SpaceGrotesk-latin.woff2') format('woff2');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ============================================================
   RESET
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bone);
  background-image: radial-gradient(circle, rgba(15, 15, 14, 0.07) 1px, transparent 1px);
  background-size: 28px 28px;
  background-attachment: fixed;
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-weight: var(--fw-regular);
  font-size: var(--text-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

@media (max-width: 768px) {
  body {
    background-attachment: scroll;
  }
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

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

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   LAYOUT PRIMITIVES
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-ink);
  color: var(--color-bone);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 100;
  transition: top var(--duration-base) var(--ease-smooth);
}
.skip-link:focus {
  top: 1rem;
}

main {
  flex: 1;
}

.eyebrow {
  font-size: var(--text-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--color-muted);
  font-weight: var(--fw-medium);
}

.section__layout {
  display: grid;
  grid-template-columns: var(--eyebrow-col) 1fr;
  column-gap: 2rem;
  align-items: start;
}

.section__main {
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  min-width: 0;
}

@media (max-width: 720px) {
  .section__layout {
    grid-template-columns: 1fr;
    row-gap: 0.75rem;
  }
}

.section__num {
  font-size: var(--text-label);
  font-weight: var(--fw-regular);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
  padding-top: 0.45em;
  white-space: nowrap;
}

.section__layout .section__num {
  position: sticky;
  top: calc(var(--nav-height) + 1.5rem);
  align-self: start;
}

@media (max-width: 720px) {
  .section__layout .section__num {
    position: static;
    top: auto;
  }
}

.section__title {
  font-size: var(--text-h2);
  font-weight: var(--fw-regular);
  line-height: var(--lh-h2);
  letter-spacing: -0.015em;
  margin: 0;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bone);
  border-bottom: 1px solid var(--color-line);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wordmark {
  font-weight: var(--fw-medium);
  letter-spacing: -0.01em;
  font-size: 1rem;
}

.site-nav {
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  font-size: var(--text-ui);
}

.site-nav a {
  position: relative;
  padding-block: 0.25rem;
  color: var(--color-muted);
  transition: color var(--duration-base) var(--ease-smooth);
}

.site-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--duration-enter) var(--ease-smooth);
}

.site-nav a:hover {
  color: var(--color-ink);
}
.site-nav a:hover::after {
  width: 100%;
}

@media (max-width: 540px) {
  .site-nav { gap: 1.25rem; }
  .site-nav a:first-child { display: none; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(5rem, 12vw, 9rem) var(--gutter) clamp(3rem, 7vw, 5rem);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
}

.hero .section__num {
  padding-top: 0;
  margin-bottom: 0.5rem;
}

.hero__title {
  font-size: var(--text-h1);
  font-weight: 700;
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-heading);
  max-width: 22ch;
}

.hero__divider {
  width: 4rem;
  height: 1px;
  background: var(--color-line);
  margin: 0.75rem 0;
}

.hero__lede {
  max-width: var(--max-width-text);
  color: var(--color-muted);
  font-size: var(--text-body);
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: var(--text-ui);
  color: var(--color-muted);
  position: relative;
  padding-bottom: 0.25em;
  margin-top: 0.75rem;
  transition: color var(--duration-base) var(--ease-smooth);
}

.hero__cta::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform-origin: right;
  transform: scaleX(0);
  transition: transform var(--duration-enter) var(--ease-smooth);
}

.hero__cta:hover {
  color: var(--color-ink);
}

.hero__cta:hover::after {
  transform-origin: left;
  transform: scaleX(1);
}

.hero__cta-arrow {
  display: inline-block;
  transition: transform var(--duration-base) var(--ease-smooth);
}

.hero__cta:hover .hero__cta-arrow {
  transform: translateY(3px);
}

/* ============================================================
   WORK (GRID + FILTER)
   ============================================================ */
.work,
.about {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--section-gap) var(--gutter);
}

.filter {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1rem, 2.5vw, 1.75rem);
}

.filter__btn {
  font-size: var(--text-ui);
  padding: 0.75rem 0;
  font-weight: var(--fw-regular);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--color-muted);
  position: relative;
  min-height: 44px;
  transition: color var(--duration-base) var(--ease-smooth);
}

.filter__btn::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--duration-base) var(--ease-smooth);
}

.filter__btn:hover {
  color: var(--color-ink);
}

.filter__btn.is-active {
  color: var(--color-ink);
}

.filter__btn.is-active::after {
  width: 100%;
}

.grid {
  list-style: none;
  column-count: 3;
  column-gap: clamp(1.25rem, 2.5vw, 2rem);
}

@media (max-width: 900px) {
  .grid { column-count: 2; }
}

@media (max-width: 560px) {
  .grid { column-count: 1; }
}

.card {
  break-inside: avoid;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
  transition: opacity var(--duration-enter) var(--ease-smooth);
}

.card.is-hidden {
  display: none;
}

.card__link {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card__media {
  position: relative;
  background: var(--color-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--duration-base) var(--ease-smooth);
}

.card__media img {
  display: block;
  width: 100%;
  height: auto;
}

.card__media:not(:has(img))::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--color-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-line) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.5;
}

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

.card__meta {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.card__title {
  font-size: var(--text-h3);
  font-weight: var(--fw-medium);
  letter-spacing: -0.01em;
}

.card__tag {
  font-size: var(--text-label);
  color: var(--color-muted);
  letter-spacing: 0.02em;
}

.work__empty {
  text-align: center;
  color: var(--color-muted);
  padding: 3rem 0;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about__body {
  max-width: var(--max-width-text);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  font-size: clamp(1.0625rem, 1.4vw, 1.25rem);
  line-height: 1.55;
}

/* ============================================================
   BUTTON
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: var(--text-ui);
  font-weight: var(--fw-medium);
  padding: 0.95rem 1.6rem;
  border-radius: var(--radius);
  border: 1px solid currentColor;
  cursor: pointer;
  transition: background var(--duration-base) var(--ease-smooth),
              color var(--duration-base) var(--ease-smooth),
              transform var(--duration-base) var(--ease-smooth);
}

.btn--primary {
  background: var(--color-ink);
  color: var(--color-bone);
  border-color: var(--color-ink);
}

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

.btn--ghost-light {
  background: var(--color-bone);
  color: var(--color-ink);
  border-color: var(--color-bone);
}

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

/* ============================================================
   CONTACT (INVERTED)
   ============================================================ */
.contact--inverted {
  background: var(--color-ink);
  color: var(--color-bone);
  text-align: center;
  padding: clamp(5rem, 12vw, 9rem) var(--gutter);
  margin-top: clamp(4rem, 8vw, 6rem);
}

.contact__inner {
  max-width: var(--max-width-text);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.contact--inverted .section__num {
  color: rgba(245, 241, 234, 0.55);
  padding-top: 0;
}

.contact--inverted .section__title {
  margin-bottom: 0.5rem;
}

.contact--inverted .contact__lede {
  color: rgba(245, 241, 234, 0.7);
  max-width: 50ch;
  margin-bottom: 1.25rem;
}

.contact__caption {
  font-size: var(--text-ui);
  color: rgba(245, 241, 234, 0.5);
}

.contact--inverted :focus-visible {
  outline-color: var(--color-bone);
}

.contact__socials {
  list-style: none;
  display: flex;
  gap: clamp(1.25rem, 3vw, 2rem);
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
  font-size: var(--text-ui);
}

.contact--inverted .contact__socials {
  color: rgba(245, 241, 234, 0.6);
}

.contact__socials a {
  position: relative;
  padding-block: 0.25rem;
  display: inline-flex;
  gap: 0.4em;
  align-items: baseline;
  transition: color var(--duration-base) var(--ease-smooth);
}

.contact__socials a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--duration-enter) var(--ease-smooth);
}

.contact--inverted .contact__socials a:hover {
  color: var(--color-bone);
}

.contact__socials a:hover::after {
  width: 100%;
}

.contact__socials-arrow {
  font-size: 0.85em;
  transition: transform var(--duration-base) var(--ease-smooth);
}

.contact__socials a:hover .contact__socials-arrow {
  transform: translate(2px, -2px);
}

/* ============================================================
   LEGAL PAGES
   ============================================================ */
.legal {
  max-width: var(--max-width-text);
  margin: 0 auto;
  padding: clamp(4rem, 10vw, 7rem) var(--gutter) var(--section-gap);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.legal__title {
  font-size: var(--text-h2);
  font-weight: var(--fw-regular);
  line-height: var(--lh-h2);
  letter-spacing: -0.015em;
  margin-bottom: 1rem;
  margin-top: 0;
}

.prose {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: var(--text-body);
  line-height: var(--lh-body);
}

.prose p {
  color: var(--color-muted);
}

.prose strong {
  color: var(--color-ink);
  font-weight: var(--fw-medium);
}

.prose a {
  color: var(--color-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--color-line);
  transition: text-decoration-color var(--duration-base) var(--ease-smooth);
}

.prose a:hover {
  text-decoration-color: currentColor;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding: 2rem 0;
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: var(--text-ui);
  color: var(--color-muted);
}

.site-footer__copy-block {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.site-footer__email {
  color: inherit;
  transition: color var(--duration-base) var(--ease-smooth);
}

.site-footer__email:hover {
  color: var(--color-ink);
}

.site-footer__nav {
  display: flex;
  gap: 1.5rem;
}

.site-footer__nav a {
  position: relative;
  transition: color var(--duration-base) var(--ease-smooth);
}

.site-footer__nav a:hover {
  color: var(--color-ink);
}

/* ============================================================
   FADE-IN (INTERSECTION OBSERVER)
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-enter) var(--ease-out),
              transform var(--duration-enter) var(--ease-out);
}

.fade-in.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .fade-in { opacity: 1; transform: none; }
}