/* ---------- tokens ---------- */
:root {
  --mist: #F5F5F3;
  --ink: #0F1F2E;
  --foam: #FAFAF9;
  --clay: #1D5D9B;
  --amber: #4FA3D1;
  --slate: #5C7488;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "IBM Plex Sans", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --section-x: clamp(1.5rem, 5vw, 6rem);
  --content-max: 74rem;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--mist);
  min-height: 100%;
}

a { color: inherit; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clay);
  margin: 0 0 1rem;
}

.eyebrow--light { color: var(--clay); }

/* ---------- grain overlay ---------- */
.grain {
  position: fixed;
  inset: 0;
  z-index: 500;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* ---------- header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem var(--section-x);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ink);
  background: color-mix(in srgb, var(--mist) 82%, transparent);
  backdrop-filter: blur(6px);
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  text-decoration: none;
  justify-self: start;
}

.wordmark__dot { color: var(--clay); }

.site-nav {
  display: flex;
  gap: 1.75rem;
  justify-self: center;
}

.site-nav a {
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.site-nav a:hover { opacity: 1; }

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-self: end;
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  opacity: 0.85;
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid color-mix(in srgb, var(--ink) 20%, transparent);
  border-radius: 999px;
  overflow: hidden;
}

.lang-toggle__opt {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0.3rem 0.62rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  color: color-mix(in srgb, var(--ink) 58%, transparent);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

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

.lang-toggle__opt[aria-pressed="true"] {
  background: var(--ink);
  color: var(--mist);
}

.lang-toggle__opt[aria-pressed="true"]:hover { color: var(--mist); }

.status-pill__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--amber) 25%, transparent);
}

@media (max-width: 720px) {
  .site-nav { display: none; }
  .status-pill { display: none; }
}

/* ---------- shared type ---------- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.05;
  margin: 0;
}

em {
  font-style: italic;
  font-weight: 500;
  color: var(--clay);
}

/* ---------- hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 7rem var(--section-x) 6rem;
}

.hero__inner {
  max-width: 46rem;
  margin: 0 auto;
  text-align: center;
}

.hero__title {
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  letter-spacing: -0.01em;
}

.hero__ripple-wrap {
  width: min(20rem, 60%);
  height: 1.1rem;
  margin: 1.75rem auto 1.5rem;
  overflow: hidden;
}

.hero__ripple {
  display: block;
  width: 200%;
  height: 100%;
  stroke: var(--slate);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  animation: wave-scroll 4s linear infinite;
}

@keyframes wave-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .hero__ripple { animation: none; }
}

.hero__subhead {
  font-size: 1.15rem;
  line-height: 1.6;
  max-width: 34rem;
  margin-left: auto;
  margin-right: auto;
  color: var(--ink);
  opacity: 0.85;
}

.hero__actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2.25rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 0.85rem 1.5rem;
  border-radius: 2px;
  border: 1px solid var(--ink);
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

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

.btn--primary:hover {
  background: var(--clay);
  border-color: var(--clay);
  transform: translateY(-1px);
}

/* ---------- trust ---------- */
.trust {
  padding: 4.5rem var(--section-x);
  border-top: 1px solid color-mix(in srgb, var(--ink) 10%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--ink) 10%, transparent);
}

.trust__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  text-align: center;
}

.trust__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
  margin: 0 0 1rem;
}

.trust__marquee {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 6%, black 94%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 6%, black 94%, transparent);
}

.trust__track {
  display: flex;
  width: max-content;
  animation: trust-scroll 26s linear infinite;
}

.trust__marquee:hover .trust__track {
  animation-play-state: paused;
}

.trust__list {
  display: flex;
  align-items: center;
  gap: 3.5rem;
  /* espace de fin identique à l'espace interne : chaque copie fait
     exactement la même largeur, condition d'une boucle sans couture */
  padding: 0 3.5rem 0 0;
  margin: 0;
  list-style: none;
}

.trust__logo {
  display: block;
  height: 88px;
  width: auto;
  max-width: 320px;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.5;
  transition: filter 0.25s ease, opacity 0.25s ease;
}

.trust__logo:hover {
  opacity: 1;
  filter: none;
}

@keyframes trust-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .trust__track {
    animation: none;
    width: auto;
    margin: 0 auto;
    justify-content: center;
  }
  .trust__list[aria-hidden="true"] {
    display: none;
  }
  .trust__list {
    flex-wrap: wrap;
    white-space: normal;
    padding: 0;
  }
}

/* ---------- about / vision ---------- */
.about,
.vision {
  padding: 6rem var(--section-x);
}

.about__inner,
.vision__inner {
  max-width: 36rem;
  margin: 0 auto;
  text-align: center;
}

.about__title,
.vision__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 1.25rem;
}

.about__body,
.vision__body {
  line-height: 1.7;
  font-size: 1.05rem;
  color: color-mix(in srgb, var(--ink) 80%, transparent);
}

.vision {
  border-top: 1px solid color-mix(in srgb, var(--ink) 10%, transparent);
}

/* ---------- stack ---------- */
.stack {
  padding: 7rem var(--section-x) 8rem;
}

.stack__intro {
  max-width: 34rem;
  margin: 0 auto 3.5rem;
  text-align: center;
}

.stack__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.stack__zones {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1px;
  max-width: var(--content-max);
  margin: 0 auto;
  background: color-mix(in srgb, var(--ink) 12%, transparent);
  border-top: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
}

.zone {
  background: color-mix(in srgb, var(--mist) 65%, transparent);
  padding: 2.5rem 2rem;
}

.zone__title {
  font-size: 1.5rem;
  margin-bottom: 0.85rem;
}

.zone__body {
  line-height: 1.6;
  color: color-mix(in srgb, var(--ink) 78%, transparent);
  max-width: 24rem;
}

/* ---------- work ---------- */
.work {
  padding: 6rem var(--section-x) 8rem;
}

.work__intro {
  max-width: 34rem;
  margin: 0 auto 3.5rem;
  text-align: center;
}

.work__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.work__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.5rem;
  max-width: var(--content-max);
  margin: 0 auto;
}

.project {
  border: 1px solid color-mix(in srgb, var(--ink) 14%, transparent);
  padding: 2rem;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.project:hover {
  border-color: var(--clay);
  transform: translateY(-3px);
}

.project__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
}

.project__tags span {
  border: 1px solid color-mix(in srgb, var(--ink) 20%, transparent);
  padding: 0.25rem 0.6rem;
  color: color-mix(in srgb, var(--ink) 70%, transparent);
}

.project__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  line-height: 1.3;
}

.project__facts {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 0;
}

.project__fact dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clay);
  margin-bottom: 0.3rem;
}

.project__fact dd {
  margin: 0;
  line-height: 1.6;
  font-size: 0.95rem;
  color: color-mix(in srgb, var(--ink) 78%, transparent);
}

/* ---------- certs ---------- */
.certs {
  padding: 6rem var(--section-x) 8rem;
}

.certs__intro {
  max-width: 34rem;
  margin: 0 auto 3.5rem;
  text-align: center;
}

.certs__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.certs__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1.5rem;
  max-width: var(--content-max);
  margin: 0 auto;
}

.cert {
  border: 1px solid color-mix(in srgb, var(--ink) 14%, transparent);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.cert:hover {
  border-color: var(--clay);
  transform: translateY(-3px);
}

.cert__thumb-link {
  display: block;
}

.cert__thumb {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-bottom: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
}

.cert__body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.cert__title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 0.4rem;
}

.cert__org {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--slate);
  margin: 0 0 0.9rem;
}

.cert__verify {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--clay);
  text-decoration: none;
}

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

/* ---------- holt ---------- */
.holt {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: 6rem var(--section-x);
}

.holt__inner {
  max-width: 36rem;
  margin: 0 auto;
  text-align: center;
}

.holt__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 1.25rem;
}

.holt__body {
  line-height: 1.7;
  font-size: 1.05rem;
  color: color-mix(in srgb, var(--ink) 80%, transparent);
  margin-bottom: 2.25rem;
}

.holt__email {
  display: inline-block;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  text-decoration: none;
  color: var(--clay);
  border-bottom: 1px solid color-mix(in srgb, var(--clay) 45%, transparent);
  padding-bottom: 0.2rem;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* ---------- footer ---------- */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem 1rem;
  padding: 2rem var(--section-x);
  border-top: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  color: color-mix(in srgb, var(--ink) 55%, transparent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.site-footer__legal {
  flex-basis: 100%;
  color: color-mix(in srgb, var(--ink) 42%, transparent);
}

.site-footer a {
  text-decoration: none;
  color: inherit;
}

.site-footer a:hover { color: var(--clay); }

/* ---------- scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- focus ---------- */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 3px;
}