/* ==========================================================
   SARA Paris — luxury editorial design system
   Serif: Literata (ExtraLight/Light) · Sans: Archivo
   ========================================================== */

:root {
  --ink: #131313;
  --paper: #faf9f7;
  --grey: #2e2e2e;
  --green: #2a5437;
  --wine: #682a2b;
  --line: rgba(19, 19, 19, 0.15);
  --line-light: rgba(250, 249, 247, 0.2);
  --serif: "Literata", serif;
  --sans: "Archivo", sans-serif;
  --pad: clamp(1.25rem, 4vw, 4rem);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-weight: 300;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ---------- shared ---------- */

.label {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--wine);
  margin-bottom: 1.5rem;
}
.label--center { text-align: center; }
.label--light { color: rgba(250, 249, 247, 0.5); }

.btn-outline {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.9rem 2.2rem;
  border: 1px solid var(--ink);
  border-radius: 99px;
  transition: background 0.35s ease, color 0.35s ease;
}
.btn-outline:hover { background: var(--ink); color: var(--paper); }

/* scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- header ---------- */

.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem var(--pad);
  color: var(--paper);
  transition: background 0.4s ease, color 0.4s ease, padding 0.4s ease,
              box-shadow 0.4s ease;
}
.header.is-scrolled {
  background: rgba(250, 249, 247, 0.92);
  backdrop-filter: blur(10px);
  color: var(--ink);
  padding: 0.9rem var(--pad);
  box-shadow: 0 1px 0 var(--line);
}

.header__logo {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 1.35rem;
  letter-spacing: 0.28em;
}
.header__logo span {
  display: block;
  font-family: var(--sans);
  font-size: 0.55rem;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  opacity: 0.7;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.header__link { position: relative; padding-bottom: 3px; }
.header__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s ease;
}
.header__link:hover::after { transform: scaleX(1); transform-origin: left; }

.header__lang { display: flex; gap: 0.5rem; opacity: 0.8; }
.header__lang a:not(.is-active), .footer__lang a:not(.is-active) { opacity: 0.45; }

.header__burger { display: none; }

/* mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--ink);
  color: var(--paper);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.mobile-menu.is-open { opacity: 1; pointer-events: auto; }
.mobile-menu__lang { display: flex; gap: 1.5rem; font-family: var(--sans); font-size: 0.9rem; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  height: 100vh;
  min-height: 620px;
  display: flex;
  align-items: flex-end;
  color: var(--paper);
  overflow: hidden;
}
.hero__media { position: absolute; inset: 0; }
.hero__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  animation: heroZoom 18s ease-out forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.12); }
  to   { transform: scale(1); }
}
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(19,19,19,0.75) 0%, rgba(19,19,19,0.25) 45%, rgba(19,19,19,0.35) 100%);
}
.hero__content {
  position: relative;
  padding: 0 var(--pad) clamp(4rem, 10vh, 7rem);
}
.hero__title {
  font-family: var(--serif);
  font-weight: 200;
  font-size: clamp(2.4rem, 6.5vw, 5.6rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  max-width: 18ch;
}
.hero__title em { font-style: italic; font-weight: 200; }

.hero__scroll {
  position: absolute;
  right: var(--pad);
  bottom: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.8;
}
.hero__scroll-line {
  width: 1px; height: 56px;
  background: var(--paper);
  transform-origin: top;
  animation: scrollPulse 2.2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0% { transform: scaleY(0); }
  50% { transform: scaleY(1); }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- services ---------- */

.services { padding: clamp(6rem, 12vh, 9rem) 0 0; }
.services__intro {
  padding: 0 var(--pad);
  max-width: 68rem;
  margin-bottom: clamp(3rem, 7vh, 5rem);
}
.services__statement {
  font-family: var(--serif);
  font-weight: 200;
  font-size: clamp(1.6rem, 3.4vw, 2.9rem);
  line-height: 1.28;
}

.services__slider { position: relative; }
.services__track {
  display: flex;
  gap: clamp(1rem, 2.5vw, 2rem);
  padding: 0 var(--pad) 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  cursor: grab;
}
.services__track::-webkit-scrollbar { display: none; }
.services__track.is-dragging { cursor: grabbing; scroll-snap-type: none; }

.service-card {
  flex: 0 0 clamp(240px, 26vw, 340px);
  scroll-snap-align: start;
}
.service-card__img {
  overflow: hidden;
  aspect-ratio: 4 / 5;
  margin-bottom: 1.4rem;
}
.service-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1), filter 0.8s ease;
  filter: grayscale(1);
}
.service-card:hover .service-card__img img { transform: scale(1.06); }
.service-card__index {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--wine);
}
.service-card h3 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 1.35rem;
  margin: 0.4rem 0 0.6rem;
}
.service-card p { font-size: 0.85rem; opacity: 0.75; max-width: 30ch; }

.services__nav {
  display: flex;
  gap: 0.8rem;
  padding: 1.5rem var(--pad) 0;
  justify-content: flex-end;
}
.slider-btn {
  width: 48px; height: 48px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease;
}
.slider-btn:hover { background: var(--ink); color: var(--paper); }

/* ---------- clients marquee ---------- */

.clients {
  padding: clamp(6rem, 12vh, 9rem) 0;
  border-bottom: 1px solid var(--line);
}
.clients__marquee { overflow: hidden; margin-top: 2.5rem; }
.clients__track {
  display: flex;
  gap: clamp(3rem, 7vw, 6rem);
  width: max-content;
  animation: marquee 36s linear infinite;
}
.clients__marquee:hover .clients__track { animation-play-state: paused; }
.clients__track span {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.3rem, 2.6vw, 2rem);
  letter-spacing: 0.12em;
  white-space: nowrap;
  opacity: 0.55;
  transition: opacity 0.3s ease;
}
.clients__track span:hover { opacity: 1; }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- projects ---------- */

.projects { padding: clamp(6rem, 12vh, 9rem) var(--pad); }
.projects__head { margin-bottom: clamp(3rem, 6vh, 5rem); }
.projects__title {
  font-family: var(--serif);
  font-weight: 200;
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: 1;
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(2rem, 5vw, 5rem) clamp(2rem, 6vw, 7rem);
}
.project-card--offset { transform: translateY(clamp(2rem, 6vh, 5rem)); }
.project-card--offset.is-visible { transform: translateY(clamp(2rem, 6vh, 5rem)); }

.project-card__img {
  overflow: hidden;
  aspect-ratio: 9 / 11;
  margin-bottom: 1.3rem;
}
.project-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(1);
  transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1), filter 0.6s ease;
}
.project-card:hover .project-card__img img {
  transform: scale(1.05);
  filter: grayscale(0.3);
}
.project-card__cat {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.5rem;
}
.project-card h3 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  line-height: 1.3;
  max-width: 24ch;
}

.projects__more {
  text-align: center;
  padding-top: clamp(5rem, 10vh, 8rem);
}

/* ---------- about / founder ---------- */

.about {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(6rem, 14vh, 10rem) var(--pad);
}
.about__inner {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
  max-width: 80rem;
  margin: 0 auto;
}
.about__portrait img { width: 100%; filter: grayscale(1); }
.about__text .label { color: rgba(250, 249, 247, 0.5); }
.about__text h2 {
  font-family: var(--serif);
  font-weight: 200;
  font-size: clamp(1.5rem, 2.8vw, 2.4rem);
  line-height: 1.3;
  margin-bottom: 1.8rem;
}
.about__body {
  font-size: 0.95rem;
  opacity: 0.7;
  max-width: 48ch;
  margin-bottom: 2.5rem;
}
.about .btn-outline { border-color: var(--paper); color: var(--paper); }
.about .btn-outline:hover { background: var(--paper); color: var(--ink); }

/* ---------- gallery strip ---------- */

.gallery { overflow: hidden; padding: clamp(4rem, 8vh, 6rem) 0; }
.gallery__track {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
  width: max-content;
  animation: marquee 48s linear infinite;
}
.gallery__track img {
  height: clamp(200px, 32vh, 320px);
  width: auto;
  filter: grayscale(1);
  transition: filter 0.5s ease;
}
.gallery__track img:hover { filter: grayscale(0); }

/* ---------- footer ---------- */

.footer {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(5rem, 12vh, 9rem) var(--pad) 2rem;
}
.footer__top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: clamp(3rem, 7vh, 5rem);
  border-bottom: 1px solid var(--line-light);
}
.footer__cta {
  font-family: var(--serif);
  font-weight: 200;
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1.1;
}
.footer__cta em { font-style: italic; }
.footer__mail {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  border-bottom: 1px solid var(--paper);
  padding-bottom: 4px;
  transition: opacity 0.3s ease;
}
.footer__mail:hover { opacity: 0.6; }

.footer__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  padding: clamp(3rem, 6vh, 4rem) 0;
}
.footer__col { display: flex; flex-direction: column; gap: 0.6rem; font-size: 0.9rem; }
.footer__col .label { margin-bottom: 0.6rem; }
.footer__col address { font-style: normal; opacity: 0.75; }
.footer__col a { opacity: 0.75; transition: opacity 0.3s ease; }
.footer__col a:hover { opacity: 1; }
.footer__lang { display: flex; gap: 0.5rem; }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--line-light);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  opacity: 0.5;
}

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .header__nav { display: none; }
  .header__burger {
    display: flex;
    flex-direction: column;
    gap: 7px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 101;
    padding: 6px 0;
  }
  .header__burger span {
    width: 30px; height: 1.5px;
    background: currentColor;
    transition: transform 0.35s ease;
  }
  .header__burger.is-open span:nth-child(1) { transform: translateY(4.2px) rotate(45deg); }
  .header__burger.is-open span:nth-child(2) { transform: translateY(-4.2px) rotate(-45deg); }

  .projects__grid { grid-template-columns: 1fr; }
  .project-card--offset, .project-card--offset.is-visible { transform: none; }

  .about__inner { grid-template-columns: 1fr; }
  .about__portrait { max-width: 420px; }

  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}