/* ALFAC Conseil — Atelier éditorial
   Display: Fraunces · Body: Hanken Grotesk · Mono: Spline Sans Mono
   Palette: bone paper / warm ink / clay accent
   ------------------------------------------------------------------ */

:root {
  --bone: #f4eee3;
  --bone-2: #ece3d4;
  --bone-3: #e3d8c5;
  --ink: #221c16;
  --ink-80: #3a322a;
  --ink-60: #5e544a;
  --ink-40: #938876;
  --clay: #b0512c;
  --clay-deep: #8c3d1e;
  --clay-tint: #d98b62;
  --line: rgba(34, 28, 22, 0.14);
  --line-soft: rgba(34, 28, 22, 0.08);

  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --body: "Hanken Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "Spline Sans Mono", ui-monospace, "SFMono-Regular", monospace;

  --maxw: 1240px;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --radius: 2px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

body {
  font-family: var(--body);
  background-color: var(--bone);
  color: var(--ink);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-weight: 380;
  letter-spacing: 0.005em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

/* Paper grain overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

img {
  max-width: 100%;
  display: block;
}

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

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

/* ---------- Layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

section {
  position: relative;
  padding-block: clamp(4.5rem, 9vw, 8.5rem);
}

.rule {
  border: 0;
  border-top: 1px solid var(--line);
}

/* ---------- Typography ---------- */
h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 430;
  line-height: 1.02;
  letter-spacing: -0.018em;
  font-optical-sizing: auto;
}

.kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--clay);
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
  font-weight: 500;
}

.kicker::before {
  content: "";
  width: 1.6rem;
  height: 1px;
  background: var(--clay);
  display: inline-block;
}

.serif-i {
  font-style: italic;
  font-variation-settings: "opsz" 144;
}

.lede {
  font-size: clamp(1.15rem, 1.7vw, 1.4rem);
  line-height: 1.5;
  color: var(--ink-80);
  font-weight: 380;
  max-width: 46ch;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bone) 86%, transparent);
  backdrop-filter: blur(10px) saturate(1.1);
  -webkit-backdrop-filter: blur(10px) saturate(1.1);
  border-bottom: 1px solid var(--line-soft);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.6rem;
  gap: 2rem;
}

.brand {
  font-family: var(--display);
  font-size: 1.32rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: baseline;
  gap: 0.5ch;
  white-space: nowrap;
}

.brand .dot {
  color: var(--clay);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1.2rem, 2.4vw, 2.4rem);
  list-style: none;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 450;
  color: var(--ink-80);
  position: relative;
  padding-block: 0.3rem;
  transition: color 0.3s var(--ease);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--clay);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.lang {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  display: inline-flex;
  gap: 0.55em;
  align-items: center;
  color: var(--ink-40);
}

.lang a.on {
  color: var(--ink);
  font-weight: 600;
}

.lang a:not(.on):hover {
  color: var(--clay);
}

.btn {
  --c: var(--ink);
  font-family: var(--body);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.72em 1.35em;
  border: 1px solid var(--c);
  border-radius: 100px;
  color: var(--c);
  background: transparent;
  cursor: pointer;
  transition: all 0.35s var(--ease);
  white-space: nowrap;
}

.btn:hover {
  background: var(--c);
  color: var(--bone);
}

.btn .arrow {
  transition: transform 0.35s var(--ease);
}

.btn:hover .arrow {
  transform: translateX(3px);
}

.btn-clay {
  --c: var(--clay);
  background: var(--clay);
  color: var(--bone);
}

.btn-clay:hover {
  background: var(--clay-deep);
  border-color: var(--clay-deep);
  color: var(--bone);
}

.nav-toggle {
  display: none;
}

/* ---------- Hero ---------- */
.hero {
  padding-top: clamp(3.5rem, 7vw, 6rem);
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3rem);
}

.hero h1 {
  font-size: clamp(3rem, 8.5vw, 7.2rem);
  margin-top: 1.6rem;
  letter-spacing: -0.03em;
}

.hero h1 .line {
  display: block;
  overflow: hidden;
}

.hero h1 .line > span {
  display: block;
  transform: translateY(110%);
  animation: rise 0.95s var(--ease) forwards;
}

.hero h1 .line:nth-child(1) > span {
  animation-delay: 0.05s;
}
.hero h1 .line:nth-child(2) > span {
  animation-delay: 0.16s;
}
.hero h1 .line:nth-child(3) > span {
  animation-delay: 0.27s;
}

@keyframes rise {
  to {
    transform: translateY(0);
  }
}

.hero-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-top: clamp(2.5rem, 5vw, 4rem);
  opacity: 0;
  animation: fade 1s var(--ease) 0.5s forwards;
}

.hero-cta {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.hero-meta {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--ink-40);
  text-align: right;
  line-height: 1.7;
}

@keyframes fade {
  to {
    opacity: 1;
  }
}

.marquee-strip {
  border-block: 1px solid var(--line);
  padding-block: 1.1rem;
  margin-top: clamp(2.5rem, 5vw, 4rem);
  overflow: hidden;
  white-space: nowrap;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee-strip .track {
  display: inline-flex;
  gap: 3.5rem;
  animation: scroll 38s linear infinite;
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-60);
}

.marquee-strip .track span {
  display: inline-flex;
  align-items: center;
  gap: 3.5rem;
}
.marquee-strip .track span::after {
  content: "✦";
  color: var(--clay);
}

@keyframes scroll {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- Section headers ---------- */
.sec-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.sec-head h2 {
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
}

/* ---------- Services ---------- */
.services-list {
  border-top: 1px solid var(--line);
}

.service {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  padding-block: clamp(2rem, 3.5vw, 3rem);
  border-bottom: 1px solid var(--line);
  align-items: start;
  transition: padding-left 0.4s var(--ease);
}

.service:hover {
  padding-left: 0.8rem;
}

.service .num {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--clay);
  padding-top: 0.7rem;
  letter-spacing: 0.05em;
}

.service h3 {
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  margin-bottom: 0.7rem;
}

.service .svc-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

.service p {
  color: var(--ink-60);
  max-width: 60ch;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-80);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 0.4em 0.9em;
}

/* ---------- Method (dark contrast section) ---------- */
.method {
  background: var(--ink);
  color: var(--bone);
}

.method .kicker {
  color: var(--clay-tint);
}
.method .kicker::before {
  background: var(--clay-tint);
}

.method h2 {
  color: var(--bone);
}

.steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(244, 238, 227, 0.14);
  border: 1px solid rgba(244, 238, 227, 0.14);
  margin-top: 1rem;
}

.step {
  background: var(--ink);
  padding: clamp(1.8rem, 3vw, 2.8rem);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  min-height: 14rem;
  transition: background 0.4s var(--ease);
}

.step:hover {
  background: #2c241b;
}

.step .s-num {
  font-family: var(--display);
  font-size: 2.6rem;
  font-weight: 400;
  color: var(--clay-tint);
  font-style: italic;
}

.step h3 {
  font-size: 1.4rem;
  color: var(--bone);
}

.step p {
  color: rgba(244, 238, 227, 0.62);
  font-size: 0.98rem;
}

/* ---------- Why / principles ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.principle {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding-top: 1.6rem;
  border-top: 2px solid var(--ink);
}

.principle .p-fig {
  font-family: var(--display);
  font-size: clamp(2.6rem, 5vw, 3.8rem);
  font-weight: 420;
  line-height: 1;
  letter-spacing: -0.03em;
}

.principle h3 {
  font-size: 1.2rem;
  font-family: var(--body);
  font-weight: 600;
  letter-spacing: 0;
}

.principle p {
  color: var(--ink-60);
  font-size: 0.98rem;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.about-statement {
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.4vw, 2.9rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  font-weight: 400;
}

.about-statement em {
  color: var(--clay);
  font-variation-settings: "opsz" 144;
}

.about-aside {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.about-aside p {
  color: var(--ink-60);
}

.signature {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--ink);
}

/* ---------- FAQ ---------- */
.faq-grid {
  display: grid;
  grid-template-columns: 0.6fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.faq-list {
  display: flex;
  flex-direction: column;
}

details.qa {
  border-top: 1px solid var(--line);
  padding-block: 1.5rem;
}

details.qa:last-child {
  border-bottom: 1px solid var(--line);
}

details.qa summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--display);
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  font-weight: 420;
  letter-spacing: -0.01em;
}

details.qa summary::-webkit-details-marker {
  display: none;
}

details.qa .sign {
  flex: none;
  width: 1.5rem;
  height: 1.5rem;
  position: relative;
  transition: transform 0.4s var(--ease);
}
details.qa .sign::before,
details.qa .sign::after {
  content: "";
  position: absolute;
  background: var(--clay);
  inset: 0;
  margin: auto;
}
details.qa .sign::before {
  width: 100%;
  height: 1.5px;
}
details.qa .sign::after {
  width: 1.5px;
  height: 100%;
  transition: transform 0.4s var(--ease);
}
details.qa[open] .sign::after {
  transform: scaleY(0);
}

details.qa .ans {
  color: var(--ink-60);
  max-width: 60ch;
  padding-top: 1rem;
  font-size: 1rem;
}

/* ---------- Contact / CTA ---------- */
.cta {
  background: var(--clay);
  color: var(--bone);
}

.cta .wrap {
  display: grid;
  gap: 2rem;
}

.cta h2 {
  font-size: clamp(2.4rem, 6vw, 5rem);
  color: var(--bone);
  letter-spacing: -0.03em;
}

.cta h2 em {
  font-style: italic;
  font-variation-settings: "opsz" 144;
}

.cta-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 3rem;
  align-items: center;
  justify-content: space-between;
}

.cta .email-link {
  font-family: var(--display);
  font-size: clamp(1.4rem, 3.5vw, 2.4rem);
  font-style: italic;
  border-bottom: 1.5px solid rgba(244, 238, 227, 0.4);
  padding-bottom: 0.1em;
  transition: border-color 0.35s var(--ease);
}

.cta .email-link:hover {
  border-color: var(--bone);
}

.cta .btn {
  --c: var(--bone);
}
.cta .btn:hover {
  background: var(--bone);
  color: var(--clay);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(244, 238, 227, 0.7);
  padding-block: clamp(3rem, 6vw, 5rem);
  font-size: 0.9rem;
}

.foot-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(244, 238, 227, 0.12);
}

.foot-brand {
  font-family: var(--display);
  font-size: 2rem;
  color: var(--bone);
}

.foot-brand .dot {
  color: var(--clay-tint);
}

.foot-cols {
  display: flex;
  gap: clamp(2rem, 5vw, 5rem);
  flex-wrap: wrap;
}

.foot-col h4 {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clay-tint);
  margin-bottom: 1rem;
  font-weight: 500;
}

.foot-col a,
.foot-col p {
  display: block;
  color: rgba(244, 238, 227, 0.7);
  margin-bottom: 0.5rem;
  transition: color 0.3s var(--ease);
}

.foot-col a:hover {
  color: var(--bone);
}

.foot-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 2rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: rgba(244, 238, 227, 0.5);
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (min-width: 720px) {
  .hero-grid {
    grid-template-columns: 1.5fr 1fr;
    align-items: end;
  }
  .sec-head {
    grid-template-columns: 0.8fr 1.2fr;
    align-items: end;
  }
  .cta .wrap {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .about-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .why-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .principle {
    padding-block: 1.6rem;
  }
}

@media (max-width: 680px) {
  .nav-links {
    display: none;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .service {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }
  .service .num {
    padding-top: 0;
  }
  .hero-meta {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.001ms !important;
  }
  .hero h1 .line > span {
    transform: none;
  }
  .hero-foot {
    opacity: 1;
  }
}