@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --color-paper: #FAFAF7;
  --color-paper-dim: #EFEEEA;
  --color-ink: #181818;
  --color-ink-soft: #595954;
  --color-ink-muted: #80807A;
  --color-ink-faint: rgba(24, 24, 24, 0.55);
  --color-line: rgba(24, 24, 24, 0.12);
  --color-grid-line: #E5E5E0;
  --color-registration: #8B4A3F;
  --color-registration-soft: #F3E3DE;
  --color-cyan: #2E2BC7;
  --color-ocre: #EEDDA0;
  --color-surface: #FAFAF7;
  --color-surface-line: rgba(24, 24, 24, 0.12);
  --color-on-surface: #181818;
  --color-on-surface-soft: rgba(24, 24, 24, 0.6);

  --font-display: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-sans: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, sans-serif;

  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-6: 24px; --space-8: 32px; --space-12: 48px; --space-16: 64px; --space-24: 96px;

  --radius-sm: 2px; --radius-md: 4px;

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --ease-drawer: cubic-bezier(0.32, 0.72, 0, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; padding-top: 6px; background: var(--color-paper); font-family: var(--font-sans); }
img { max-width: 100%; display: block; }

/* ---- SCROLL BAR ---- */
.gr-scrollbar { position: fixed; top: 0; left: 0; right: 0; z-index: 999; display: flex; align-items: stretch; height: 6px; background: var(--color-paper); border-bottom: 1px solid var(--color-line); }
.gr-scrollbar__swatches { display: flex; flex-shrink: 0; }
.gr-scrollbar__swatch { width: 6px; height: 100%; background: var(--sw); }
.gr-scrollbar__track { position: relative; flex: 1; background: repeating-linear-gradient(to right, var(--color-line) 0 1px, transparent 1px 8px); }
.gr-scrollbar__fill { position: absolute; inset: 0; transform-origin: left; transform: scaleX(0); background: var(--color-registration); will-change: transform; }
.gr-scrollbar__mark { position: absolute; top: 50%; left: 0%; transform: translate(-50%, -50%); color: var(--color-ink); pointer-events: none; }
@media (max-width: 640px) { .gr-scrollbar__swatches { display: none; } }

/* ---- NAV ---- */
.gr-corner-mark { position: fixed; top: 40px; z-index: 1000; color: var(--color-registration); pointer-events: none; }
.gr-corner-mark--left { left: 40px; }
.gr-corner-mark--right { right: 40px; }
@media (max-width: 640px) { .gr-corner-mark { display: none; } }
.gr-nav { position: sticky; top: 6px; z-index: 950; display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); padding: var(--space-6) var(--space-8); background: var(--color-paper); color: var(--color-ink); }
.gr-nav__brand { font-size: 14px; font-weight: 500; letter-spacing: 0.02em; color: var(--color-ink); text-decoration: none; }
.gr-nav__links { display: flex; align-items: center; gap: var(--space-8); list-style: none; margin: 0; padding: 0; }
.gr-nav__link { position: relative; display: inline-block; padding-bottom: var(--space-1); font-size: 12px; font-weight: 500; letter-spacing: 0.08em; color: var(--color-ink-muted); text-decoration: none; }
.gr-nav__link::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform 150ms var(--ease-out); }
.gr-nav__link.is-active { color: var(--color-ink); }
.gr-nav__link.is-active::after { transform: scaleX(1); background: var(--color-registration); }
@media (hover: hover) and (pointer: fine) {
  .gr-nav__link:hover { color: var(--color-ink); }
  .gr-nav__link:hover::after { transform: scaleX(1); }
}
@media (prefers-reduced-motion: reduce) {
  .gr-nav__link::after { transition: opacity 150ms ease; transform: scaleX(1); opacity: 0; }
  .gr-nav__link.is-active::after, .gr-nav__link:hover::after { opacity: 1; }
}

.gr-nav__toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 28px; height: 28px; padding: 0; border: none; background: none; cursor: pointer; }
.gr-nav__bar { display: block; width: 100%; height: 1.5px; background: var(--color-ink); transition: transform 200ms var(--ease-in-out), opacity 150ms ease; }
.gr-nav__toggle[aria-expanded="true"] .gr-nav__bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.gr-nav__toggle[aria-expanded="true"] .gr-nav__bar:nth-child(2) { opacity: 0; }
.gr-nav__toggle[aria-expanded="true"] .gr-nav__bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.gr-mobile-menu { position: fixed; inset: 0; z-index: 900; display: flex; align-items: center; justify-content: center; background: var(--color-paper); transform: translateY(-100%); transition: transform 350ms var(--ease-drawer); }
.gr-mobile-menu[data-open="true"] { transform: translateY(0); }
.gr-mobile-menu__links { display: flex; flex-direction: column; align-items: center; gap: var(--space-8); list-style: none; margin: 0; padding: 0; }
.gr-mobile-menu__links a { font-family: var(--font-display); font-size: 32px; font-weight: 700; letter-spacing: -0.01em; color: var(--color-ink); text-decoration: none; }
.gr-mobile-menu__links a.is-active { color: var(--color-registration); }
@media (max-width: 640px) { .gr-nav__links { display: none; } .gr-nav__toggle { display: flex; } }
@media (min-width: 641px) { .gr-mobile-menu { display: none; } }
@media (prefers-reduced-motion: reduce) {
  .gr-mobile-menu { transition: opacity 200ms ease; transform: none; opacity: 0; pointer-events: none; }
  .gr-mobile-menu[data-open="true"] { transform: none; opacity: 1; pointer-events: auto; }
}

/* ---- HERO ---- */
.gr-hero { position: relative; display: grid; grid-template-columns: 1.3fr 1fr; align-items: center; gap: var(--space-16); padding: var(--space-24) var(--space-8); background: var(--color-paper); color: var(--color-ink); overflow: hidden; }
.gr-hero__grid { position: absolute; inset: 0; background-image: repeating-linear-gradient(to right, var(--color-grid-line) 0 1px, transparent 1px 120px); pointer-events: none; }
.gr-hero__text, .gr-hero__photo-wrap { position: relative; }
.gr-hero__swatches { display: flex; width: fit-content; margin-bottom: var(--space-6); }
.gr-hero__swatches span { width: 28px; height: 8px; }
.gr-hero__eyebrow { margin: 0 0 var(--space-4); font-size: 12px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-registration); }
.gr-hero__name { margin: 0 0 var(--space-6); font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; font-size: clamp(40px, 6vw, 72px); line-height: 1.02; }
.gr-hero__lede { margin: 0 0 var(--space-8); display: block; max-width: 46ch; font-size: clamp(15px, 1.6vw, 17px); line-height: 1.6; color: var(--color-ink-soft); }
.gr-hero__lede .gr-hero__line { display: block; }
.gr-hero__photo-wrap { aspect-ratio: 4 / 5; }
.gr-hero__photo { width: 100%; height: 100%; background: var(--color-paper-dim); border: 1px solid var(--color-line); border-radius: var(--radius-md); }
.gr-hero__line { opacity: 0; transform: translateY(14px); animation: gr-hero-in 600ms var(--ease-out) forwards; animation-delay: calc(var(--i, 0) * 90ms); }
@keyframes gr-hero-in { to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) {
  .gr-hero__line { transform: none; animation: gr-hero-in-fade 300ms ease forwards; animation-delay: calc(var(--i, 0) * 40ms); }
  @keyframes gr-hero-in-fade { to { opacity: 1; } }
}
@media (max-width: 860px) {
  .gr-hero { grid-template-columns: 1fr; gap: var(--space-8); padding: var(--space-16) var(--space-6); }
  .gr-hero__photo-wrap { order: -1; aspect-ratio: 16 / 10; }
}

/* ---- Section intro (Designs listing header) ---- */
.gr-intro { max-width: 720px; margin: 0 auto; padding: var(--space-16) var(--space-8) var(--space-8); }
.gr-intro__eyebrow { display: block; margin-bottom: var(--space-3); font-size: 12px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-registration); }
.gr-intro__title { margin: 0 0 var(--space-4); font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; font-size: clamp(32px, 4vw, 44px); }
.gr-intro__body { margin: 0; max-width: 60ch; font-size: 16px; line-height: 1.6; color: var(--color-ink-soft); }
@media (max-width: 640px) { .gr-intro { padding-left: var(--space-6); padding-right: var(--space-6); } }

/* ---- GRID / WALL ---- */
.gr-wall { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); padding: var(--space-8) var(--space-8) var(--space-16); background: var(--color-surface); }
.gr-tile { opacity: 0; transform: translateY(12px); transition: opacity 350ms var(--ease-out), transform 350ms var(--ease-out); transition-delay: calc(var(--stagger, 0) * 70ms); }
.gr-tile[data-visible] { opacity: 1; transform: translateY(0); }
.gr-tile__link { display: block; text-decoration: none; color: var(--color-on-surface); }
.gr-tile__frame { position: relative; aspect-ratio: 4 / 3; overflow: hidden; border-radius: var(--radius-md); background: var(--color-paper-dim); border: 1px solid var(--color-line); }
.gr-tile__image { position: absolute; inset: 0; background: linear-gradient(160deg, var(--accent) 0%, var(--color-surface) 130%); transition: transform 200ms var(--ease-out); }
.gr-tile__corner { position: absolute; width: 14px; height: 14px; opacity: 0; transform: scale(0.85); transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out); z-index: 2; }
.gr-tile__corner::before, .gr-tile__corner::after { content: ''; position: absolute; background: var(--color-on-surface); }
.gr-tile__corner::before { width: 100%; height: 1px; }
.gr-tile__corner::after { width: 1px; height: 100%; }
.gr-tile__corner--tl { top: var(--space-2); left: var(--space-2); transform-origin: top left; }
.gr-tile__corner--tl::before, .gr-tile__corner--tl::after { top: 0; left: 0; }
.gr-tile__corner--tr { top: var(--space-2); right: var(--space-2); transform-origin: top right; }
.gr-tile__corner--tr::before { top: 0; right: 0; }
.gr-tile__corner--tr::after { top: 0; right: 0; }
.gr-tile__corner--bl { bottom: var(--space-2); left: var(--space-2); transform-origin: bottom left; }
.gr-tile__corner--bl::before { bottom: 0; left: 0; }
.gr-tile__corner--bl::after { bottom: 0; left: 0; }
.gr-tile__corner--br { bottom: var(--space-2); right: var(--space-2); transform-origin: bottom right; }
.gr-tile__corner--br::before { bottom: 0; right: 0; }
.gr-tile__corner--br::after { bottom: 0; right: 0; }
.gr-tile__meta { padding: var(--space-4) 0 0; }
.gr-tile__eyebrow { display: block; margin-bottom: var(--space-2); font-size: 11px; font-weight: 500; letter-spacing: 0.08em; color: var(--accent); }
.gr-tile__title { margin: 0 0 var(--space-2); font-family: var(--font-display); font-size: 22px; font-weight: 700; color: var(--color-on-surface); }
.gr-tile__context { margin: 0; font-size: 13px; line-height: 1.5; color: var(--color-on-surface-soft); }
@media (hover: hover) and (pointer: fine) {
  .gr-tile__link:hover .gr-tile__image { transform: scale(1.04); }
  .gr-tile__link:hover .gr-tile__corner { opacity: 1; transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .gr-tile { transition: opacity 200ms ease; transform: none; }
  .gr-tile__image, .gr-tile__corner, .gr-tile__image--img { transition: opacity 200ms ease; transform: none !important; }
}
@media (max-width: 860px) { .gr-wall { grid-template-columns: 1fr; padding: var(--space-8) var(--space-6); } }

.gr-wall--case { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); align-items: start; margin: var(--space-8) calc(var(--space-8) * -1) 0; padding-top: var(--space-8); }
.gr-wall--case .gr-tile { --accent: var(--case-accent); }
.gr-tile--phone .gr-tile__frame--phone { aspect-ratio: 375 / 812; background: var(--color-paper-dim); }
.gr-tile--print .gr-tile__frame--print { aspect-ratio: 794 / 1123; background: var(--color-paper-dim); }
.gr-tile__image--img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform 200ms var(--ease-out); }
.gr-tile__label { display: block; margin-top: var(--space-3); font-size: 12px; font-weight: 500; letter-spacing: 0.04em; color: var(--color-on-surface-soft); }
@media (hover: hover) and (pointer: fine) {
  .gr-tile--phone .gr-tile__link:hover .gr-tile__image--img,
  .gr-tile--print .gr-tile__link:hover .gr-tile__image--img { transform: scale(1.04); }
}
@media (max-width: 640px) { .gr-wall--case { margin-left: calc(var(--space-6) * -1); margin-right: calc(var(--space-6) * -1); } }

/* ---- CASE STUDY ---- */
.gr-case { background: var(--color-paper); color: var(--color-ink); }
.gr-case__header { max-width: 720px; margin: 0 auto; padding: var(--space-16) var(--space-8) var(--space-8); }
.gr-case__back { display: inline-block; margin-bottom: var(--space-8); font-size: 13px; color: var(--color-ink-muted); text-decoration: none; }
.gr-case__eyebrow { display: block; margin-bottom: var(--space-3); font-size: 12px; font-weight: 500; letter-spacing: 0.08em; color: var(--project-accent); }
.gr-case__title { margin: 0 0 var(--space-4); font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; font-size: clamp(32px, 5vw, 52px); }
.gr-case__intro { margin: 0; max-width: 60ch; font-size: 16px; line-height: 1.6; color: var(--color-ink-soft); }
.gr-case__body { max-width: 720px; margin: 0 auto; padding: 0 var(--space-8) var(--space-16); }

/* ---- SECTION (case studies + About) ---- */
.gr-section { padding: var(--space-16) 0; border-top: 1px solid var(--color-line); }
.gr-section__num { margin: 0 0 var(--space-2); font-size: 12px; font-weight: 500; color: var(--project-accent); }
.gr-section__heading { margin: 0 0 var(--space-6); font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; font-size: clamp(22px, 3vw, 28px); }
.gr-section__body { font-size: 16px; line-height: 1.75; color: var(--color-ink-soft); max-width: 66ch; }
.gr-section__body p { margin: 0 0 var(--space-4); }
.gr-section__body p:last-child { margin-bottom: 0; }
.gr-section__body strong { color: var(--color-ink); font-weight: 500; }
.gr-section[data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity 400ms var(--ease-out), transform 400ms var(--ease-out); }
.gr-section[data-reveal][data-visible] { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .gr-section[data-reveal] { transition: opacity 200ms ease; transform: none; } }
@media (max-width: 640px) { .gr-case__header, .gr-case__body { padding-left: var(--space-6); padding-right: var(--space-6); } }

/* ---- ABOUT ---- */
.gr-about { background: var(--color-paper); color: var(--color-ink); }
.gr-about__header { max-width: 720px; margin: 0 auto; padding: var(--space-16) var(--space-8) var(--space-8); }
.gr-about__eyebrow { display: block; margin-bottom: var(--space-3); font-size: 12px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-registration); }
.gr-about__title { margin: 0 0 var(--space-6); font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; font-size: clamp(36px, 5vw, 56px); }
.gr-about__intro { margin: 0; max-width: 62ch; font-size: 17px; line-height: 1.65; color: var(--color-ink-soft); }
.gr-about__body { max-width: 720px; margin: 0 auto; padding: 0 var(--space-8) var(--space-16); }
.gr-chips { display: flex; flex-wrap: wrap; gap: var(--space-3); margin: 0; padding: 0; list-style: none; }
.gr-chip { padding: var(--space-2) var(--space-4); border: 1px solid var(--color-line); border-radius: var(--radius-sm); font-size: 13px; color: var(--color-ink); }
.gr-link { position: relative; display: inline-block; padding-bottom: 2px; font-size: 15px; color: var(--color-ink); text-decoration: none; }
.gr-link::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--color-registration); transform: scaleX(0); transform-origin: left; transition: transform 150ms var(--ease-out); }
@media (hover: hover) and (pointer: fine) { .gr-link:hover::after { transform: scaleX(1); } }
.gr-about__contact-row { display: flex; flex-wrap: wrap; gap: var(--space-6); margin-bottom: var(--space-6); }
@media (max-width: 640px) { .gr-about__header, .gr-about__body { padding-left: var(--space-6); padding-right: var(--space-6); } }

/* ---- BUTTON ---- */
.gr-btn { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-3) var(--space-4); border: 1px solid var(--color-ink); border-radius: var(--radius-sm); font-size: 13px; font-weight: 500; letter-spacing: 0.02em; color: var(--color-ink); text-decoration: none; background: transparent; transition: transform 160ms var(--ease-out), background-color 160ms ease, color 160ms ease; }
.gr-btn__arrow { display: inline-block; transition: transform 160ms var(--ease-out); }
.gr-btn:active { transform: scale(0.97); }
@media (hover: hover) and (pointer: fine) {
  .gr-btn:hover { background: var(--color-ink); color: var(--color-paper); }
  .gr-btn:hover .gr-btn__arrow { transform: translateY(2px); }
}
.gr-hero__cta:hover .gr-btn__arrow { transform: translateY(2px) !important; }

/* ---- FOOTER ---- */
.gr-footer { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); padding: var(--space-8); border-top: 1px solid var(--color-line); background: var(--color-paper); font-size: 12px; color: var(--color-ink-muted); }
.gr-footer__brand { font-weight: 500; color: var(--color-ink); }
.gr-footer__sep { color: var(--color-line); }
.gr-footer__link { margin-left: auto; color: var(--color-ink-muted); text-decoration: none; }
.gr-footer__link + .gr-footer__link { margin-left: 0; }
@media (hover: hover) and (pointer: fine) { .gr-footer__link:hover { color: var(--color-registration); } }
@media (max-width: 640px) { .gr-footer { flex-direction: column; align-items: flex-start; gap: var(--space-2); } .gr-footer__link { margin-left: 0; } }