/* ============================================================
   adeto — studio de développement
   Design system : clair & minimaliste premium
   ============================================================ */

:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.75rem, 0.5rem + 6vw, 6.5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Widths */
  --content-narrow: 660px;
  --content-default: 980px;
  --content-wide: 1280px;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Satoshi', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', 'Helvetica Neue', sans-serif;

  /* Easing */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

:root,
[data-theme='light'] {
  --color-bg: #f7f7f4;
  --color-surface: #ffffff;
  --color-surface-2: #fbfbf9;
  --color-surface-offset: #f1f1ed;
  --color-surface-offset-2: #e9e9e4;
  --color-divider: #e2e2dc;
  --color-border: #d5d5ce;

  --color-text: #121210;
  --color-text-muted: #6c6c65;
  --color-text-faint: #a5a59d;
  --color-text-inverse: #f9f9f6;

  --color-primary: #1f28d8;
  --color-primary-hover: #171ea8;
  --color-primary-soft: #e7e8ff;

  --color-ink: #121210;

  --shadow-sm: 0 1px 2px rgba(18, 18, 16, 0.05);
  --shadow-md: 0 6px 20px rgba(18, 18, 16, 0.07);
  --shadow-lg: 0 20px 50px rgba(18, 18, 16, 0.1);
  --grain-opacity: 0.035;
}

[data-theme='dark'] {
  --color-bg: #0e0e0d;
  --color-surface: #161615;
  --color-surface-2: #1b1b19;
  --color-surface-offset: #1a1a18;
  --color-surface-offset-2: #21211f;
  --color-divider: #262624;
  --color-border: #353532;

  --color-text: #ecece8;
  --color-text-muted: #97978f;
  --color-text-faint: #63635d;
  --color-text-inverse: #121210;

  --color-primary: #8b93ff;
  --color-primary-hover: #a7adff;
  --color-primary-soft: #1e2040;

  --color-ink: #ecece8;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.55);
  --grain-opacity: 0.05;
}

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
  transition:
    background-color 400ms var(--ease-in-out),
    color 400ms var(--ease-in-out);
}

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

ul[role='list'] {
  list-style: none;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3,
h4 {
  text-wrap: balance;
  line-height: 1.08;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

p,
li {
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-interactive);
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

::selection {
  background: var(--color-primary-soft);
  color: var(--color-text);
}

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

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ---------- Layout ---------- */
.shell {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-12));
}

.section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
  position: relative;
}

.section--tight {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}

.rule {
  height: 1px;
  background: var(--color-divider);
  border: 0;
}

/* ---------- Typographic helpers ---------- */
.eyebrow {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 600;
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--color-primary);
}

.section-title {
  font-size: var(--text-xl);
  max-width: 22ch;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-5);
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}

@media (min-width: 900px) {
  .section-head {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: end;
    gap: var(--space-12);
  }
}

.section-head p {
  color: var(--color-text-muted);
  max-width: 46ch;
}

.lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 44ch;
  line-height: 1.5;
}

.muted {
  color: var(--color-text-muted);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  line-height: 1.2;
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

.btn svg {
  flex: none;
}

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

.btn--primary:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--ghost {
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-text);
  transform: translateY(-2px);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-sm);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.link-arrow svg {
  transition: transform var(--transition-interactive);
}

.link-arrow:hover {
  color: var(--color-primary);
}

.link-arrow:hover svg {
  transform: translateX(4px);
}

/* ---------- Scroll progress ---------- */
.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  z-index: 100;
  transform-origin: 0 50%;
  transform: scaleX(0);
  background: var(--color-primary);
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid transparent;
  transition:
    background 300ms var(--ease-out),
    border-color 300ms var(--ease-out),
    backdrop-filter 300ms var(--ease-out);
}

.header--scrolled {
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--color-divider);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand__mark {
  color: var(--color-primary);
  flex: none;
}

/* Le symbole : un A tranché à mi-hauteur, la moitié haute décalée à gauche,
   la moitié basse à droite. Décalage léger, animé au chargement et au survol. */
.brand__mark .mark-top,
.brand__mark .mark-bot {
  transition: transform 620ms var(--ease-out);
}

.brand__mark .mark-top {
  transform: translateX(-1.1px);
}

.brand__mark .mark-bot {
  transform: translateX(1.1px);
}

.brand:hover .brand__mark .mark-top,
.brand:focus-visible .brand__mark .mark-top {
  transform: translateX(-2.6px);
}

.brand:hover .brand__mark .mark-bot,
.brand:focus-visible .brand__mark .mark-bot {
  transform: translateX(2.6px);
}

/* Recalage à l'ouverture de la page */
@keyframes mark-settle-left {
  from {
    transform: translateX(-3.9px);
  }
  to {
    transform: translateX(-1.1px);
  }
}

@keyframes mark-settle-right {
  from {
    transform: translateX(3.9px);
  }
  to {
    transform: translateX(1.1px);
  }
}

.header .brand__mark .mark-top {
  animation: mark-settle-left 900ms var(--ease-out) 120ms both;
}

.header .brand__mark .mark-bot {
  animation: mark-settle-right 900ms var(--ease-out) 120ms both;
}

@media (prefers-reduced-motion: reduce) {
  .header .brand__mark .mark-top,
  .header .brand__mark .mark-bot {
    animation: none;
  }
}

.nav {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

@media (min-width: 940px) {
  .nav {
    display: flex;
  }
}

.nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  position: relative;
  padding-block: var(--space-1);
}

.nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 260ms var(--ease-out);
}

.nav a:hover,
.nav a[aria-current='true'] {
  color: var(--color-text);
}

.nav a:hover::after,
.nav a[aria-current='true']::after {
  transform: scaleX(1);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    color var(--transition-interactive);
}

.icon-btn:hover {
  background: var(--color-surface-offset);
  border-color: var(--color-text);
}

.header__cta {
  display: none;
}

@media (min-width: 620px) {
  .header__cta {
    display: inline-flex;
  }
}

.burger {
  display: grid;
}

@media (min-width: 940px) {
  .burger {
    display: none;
  }
}

/* Mobile drawer */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: var(--color-bg);
  padding: var(--space-6) 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition:
    opacity 260ms var(--ease-out),
    transform 260ms var(--ease-out);
}

.drawer[data-open='true'] {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.drawer__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 40px;
}

.drawer__nav {
  margin-top: var(--space-10);
  display: grid;
  gap: var(--space-2);
}

.drawer__nav a {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  padding-block: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
}

.drawer__foot {
  margin-top: auto;
  display: grid;
  gap: var(--space-3);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: clamp(var(--space-12), 6vw, var(--space-24));
  padding-bottom: clamp(var(--space-12), 6vw, var(--space-20));
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.55;
  pointer-events: none;
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: center;
}

@media (min-width: 1000px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

.hero h1 {
  font-size: var(--text-hero);
  margin-top: var(--space-6);
  letter-spacing: -0.035em;
}

.hero h1 em {
  font-style: normal;
  color: var(--color-primary);
}

.hero__reveal {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
}

.hero__reveal > span {
  display: inline-block;
  transform: translateY(105%);
  animation: word-up 900ms var(--ease-out) forwards;
  animation-delay: var(--d, 0ms);
}

@keyframes word-up {
  to {
    transform: translateY(0);
  }
}

.hero__body {
  margin-top: var(--space-8);
  display: grid;
  gap: var(--space-8);
  max-width: 52ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.hero__note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.dot-live {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #2f9e5b;
  box-shadow: 0 0 0 0 rgba(47, 158, 91, 0.6);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 8px rgba(47, 158, 91, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(47, 158, 91, 0);
  }
}

.hero__visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 5;
}

.hero__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  transition: transform 700ms var(--ease-out);
}

.hero__badge {
  position: absolute;
  left: var(--space-4);
  bottom: var(--space-4);
  right: var(--space-4);
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  font-size: var(--text-xs);
}

.hero__badge strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1;
}

/* Engagements */
.promises {
  display: grid;
  gap: var(--space-3);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-8);
  margin-top: var(--space-4);
  list-style: none;
}

@media (min-width: 760px) {
  .promises {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4) var(--space-8);
  }
}

.promises li {
  position: relative;
  padding-left: 26px;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.45;
}

.promises li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-primary-soft);
}

.promises li::after {
  content: '';
  position: absolute;
  left: 3px;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  --check: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");
  mask-image: var(--check);
  -webkit-mask-image: var(--check);
  mask-size: contain;
  -webkit-mask-size: contain;
  mask-repeat: no-repeat;
  -webkit-mask-repeat: no-repeat;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6) var(--space-4);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-8);
  margin-top: var(--space-4);
}

@media (min-width: 700px) {
  .stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.stat__value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1;
  letter-spacing: -0.03em;
}

.stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* ---------- Marquee ---------- */
.marquee {
  border-block: 1px solid var(--color-divider);
  background: var(--color-surface-2);
  overflow: hidden;
  padding-block: var(--space-5);
  --mask: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: var(--mask);
  -webkit-mask-image: var(--mask);
}

.marquee__track {
  display: flex;
  gap: var(--space-10);
  width: max-content;
  animation: slide 34s linear infinite;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

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

.marquee__item {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--space-10);
}

.marquee__item img {
  width: 22px;
  height: 22px;
  opacity: 0.7;
  filter: grayscale(1);
  transition:
    opacity var(--transition-interactive),
    filter var(--transition-interactive);
}

[data-theme='dark'] .marquee__item img {
  filter: grayscale(1) invert(1);
  opacity: 0.62;
}

.marquee:hover .marquee__item img {
  opacity: 1;
  filter: none;
}

[data-theme='dark'] .marquee:hover .marquee__item img {
  opacity: 1;
  filter: none;
}

.marquee__item::after {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.5;
}

/* ---------- Services ---------- */
.services {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 860px) {
  .services {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-6), 3vw, var(--space-10));
  overflow: hidden;
  isolation: isolate;
}

.card--service {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  min-height: 100%;
  transition:
    transform 320ms var(--ease-out),
    box-shadow 320ms var(--ease-out),
    border-color 320ms var(--ease-out);
}

.card--service::before {
  content: '';
  position: absolute;
  inset: -1px;
  z-index: -1;
  background: radial-gradient(
    340px circle at var(--mx, 50%) var(--my, 0%),
    color-mix(in srgb, var(--color-primary) 12%, transparent),
    transparent 70%
  );
  opacity: 0;
  transition: opacity 320ms var(--ease-out);
}

.card--service:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--color-primary) 40%, var(--color-divider));
}

.card--service:hover::before {
  opacity: 1;
}

.card__index {
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 0.1em;
}

.card__title {
  font-size: var(--text-lg);
  font-family: var(--font-display);
}

.card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  max-width: 46ch;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-2);
}

.chip {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  border: 1px solid var(--color-divider);
}

.services-mini {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

@media (min-width: 640px) {
  .services-mini {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .services-mini {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.mini {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  background: var(--color-surface-2);
  display: grid;
  gap: var(--space-2);
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive);
}

.mini h4 {
  font-size: var(--text-base);
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0;
}

.mini p {
  font-size: var(--text-sm);
}

/* ---------- Réalisations ---------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.filter {
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    border-color var(--transition-interactive);
}

.filter:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

.filter[aria-pressed='true'] {
  background: var(--color-ink);
  color: var(--color-bg);
  border-color: var(--color-ink);
}

.work {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 780px) {
  .work {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .work__item:nth-child(4n + 1),
  .work__item:nth-child(4n + 4) {
    margin-top: 0;
  }
  .work__item:nth-child(even) {
    transform: translateY(var(--space-10));
  }
}

.work__item {
  transition:
    opacity 300ms var(--ease-out),
    transform 320ms var(--ease-out);
}

.work__item[hidden] {
  display: none;
}

.work__card {
  display: block;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  transition:
    box-shadow 320ms var(--ease-out),
    border-color 320ms var(--ease-out);
}

.work__card:hover {
  box-shadow: var(--shadow-lg);
  border-color: color-mix(in srgb, var(--color-primary) 35%, var(--color-divider));
}

.work__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-surface-offset);
}

.work__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition:
    transform 700ms var(--ease-out),
    filter 400ms var(--ease-out);
}

.work__card:hover .work__media img {
  transform: scale(1.05);
}

.work__tag {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: color-mix(in srgb, var(--color-surface) 90%, transparent);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-divider);
}

.work__body {
  padding: var(--space-6);
  display: grid;
  gap: var(--space-3);
}

.work__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
}

.work__body h3 {
  font-size: var(--text-lg);
}

.work__year {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-variant-numeric: tabular-nums;
}

.work__result {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.work__result b {
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--text-base);
  display: block;
  line-height: 1.2;
}

/* ---------- Méthode (sticky) ---------- */
.method {
  display: grid;
  gap: var(--space-10);
}

@media (min-width: 960px) {
  .method {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: var(--space-16);
    align-items: start;
  }
  .method__aside {
    position: sticky;
    top: 120px;
  }
}

.steps {
  display: grid;
  gap: var(--space-4);
}

.step {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  padding: var(--space-6);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
  transition:
    border-color 320ms var(--ease-out),
    background 320ms var(--ease-out),
    transform 320ms var(--ease-out);
}

.step.is-active {
  border-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-divider));
  background: var(--color-surface-2);
}

.step__num {
  width: 40px;
  height: 40px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
  transition:
    background 320ms var(--ease-out),
    color 320ms var(--ease-out),
    border-color 320ms var(--ease-out);
}

.step.is-active .step__num {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.step h3 {
  font-size: var(--text-base);
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: var(--space-2);
}

.step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.step__time {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 600;
  margin-top: var(--space-3);
  display: block;
}

/* ---------- Studio ---------- */
.studio {
  display: grid;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}

@media (min-width: 940px) {
  .studio {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

.studio__visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-divider);
  background: var(--color-surface-2);
  aspect-ratio: 1 / 1;
}

.studio__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.values {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.value {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
}

.value__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  flex: none;
}

.value h4 {
  font-size: var(--text-base);
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0;
}

.value p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------- Témoignages ---------- */
.quotes {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 860px) {
  .quotes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.quote {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  padding: var(--space-8);
  display: grid;
  gap: var(--space-6);
}

.quote blockquote {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.quote figcaption {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.quote figcaption b {
  display: block;
  color: var(--color-text);
  font-size: var(--text-sm);
}

/* ---------- FAQ ---------- */
.faq {
  display: grid;
  gap: var(--space-3);
  max-width: var(--content-text, 68ch);
}

@media (min-width: 900px) {
  .faq {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
    max-width: none;
    align-items: start;
  }
}

.faq__item {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  padding: var(--space-5) var(--space-6);
  transition: border-color var(--transition-interactive);
}

.faq__item:hover {
  border-color: color-mix(in srgb, var(--color-primary) 40%, var(--color-divider));
}

.faq__item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: var(--text-sm);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

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

.faq__item summary::after {
  content: '';
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 3px;
  background: currentColor;
  color: var(--color-primary);
  clip-path: polygon(46% 0, 54% 0, 54% 46%, 100% 46%, 100% 54%, 54% 54%, 54% 100%, 46% 100%, 46% 54%, 0 54%, 0 46%, 46% 46%);
  transition: transform 300ms var(--ease-out);
}

.faq__item[open] summary::after {
  transform: rotate(135deg);
}

.faq__item p {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 52ch;
}

/* ---------- Formulaire de devis ---------- */
.contact {
  display: grid;
  gap: clamp(var(--space-8), 4vw, var(--space-16));
  align-items: start;
}

@media (min-width: 1000px) {
  .contact {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }
}

.contact__info {
  display: grid;
  gap: var(--space-8);
}

.contact__list {
  display: grid;
  gap: var(--space-4);
  font-size: var(--text-sm);
}

.contact__list a {
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 2px;
}

.contact__list a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.contact__list dt {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-1);
}

.form {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-6), 3vw, var(--space-10));
  box-shadow: var(--shadow-sm);
}

.form__bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.form__track {
  flex: 1;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--color-surface-offset-2);
  overflow: hidden;
}

.form__fill {
  height: 100%;
  width: 33.33%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 420ms var(--ease-in-out);
}

.form__count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.fieldset {
  display: none;
  border: 0;
  padding: 0;
  margin: 0;
  gap: var(--space-6);
  animation: step-in 420ms var(--ease-out);
}

.fieldset[data-active='true'] {
  display: grid;
}

@keyframes step-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
}

.fieldset legend {
  float: left;
  width: 100%;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  padding: 0;
  margin-bottom: var(--space-6);
}

.fieldset legend + * {
  clear: both;
}

.fieldset > p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: calc(var(--space-4) * -1);
}

.choices {
  display: grid;
  gap: var(--space-3);
}

@media (min-width: 560px) {
  .choices--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.choice {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  display: grid;
  gap: var(--space-1);
  transition:
    border-color var(--transition-interactive),
    background var(--transition-interactive),
    transform var(--transition-interactive);
}

.choice:hover {
  border-color: var(--color-text);
  transform: translateY(-1px);
}

.choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice__title {
  font-size: var(--text-sm);
  font-weight: 700;
}

.choice__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.choice:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.choice:has(input:focus-visible) {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.field {
  display: grid;
  gap: var(--space-2);
}

.field label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.field textarea {
  min-height: 130px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.field--row {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 560px) {
  .field--row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.form__error {
  font-size: var(--text-xs);
  color: #c62a4a;
  min-height: 1em;
}

[data-theme='dark'] .form__error {
  color: #ff8098;
}

.form__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.recap {
  background: var(--color-surface-offset);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: grid;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.recap span {
  color: var(--color-text-muted);
}

.form__success {
  display: none;
  text-align: left;
  gap: var(--space-4);
}

.form__success[data-active='true'] {
  display: grid;
  animation: step-in 420ms var(--ease-out);
}

.check {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #fff;
  display: grid;
  place-items: center;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-16) var(--space-8);
  background: var(--color-surface-2);
}

.footer__grid {
  display: grid;
  gap: var(--space-10);
}

@media (min-width: 860px) {
  .footer__grid {
    grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
    gap: var(--space-8);
  }
}

.footer h4 {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
  font-weight: 600;
}

.footer ul {
  display: grid;
  gap: var(--space-2);
  font-size: var(--text-sm);
  list-style: none;
}

.footer ul a {
  color: var(--color-text-muted);
}

.footer ul a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__wordmark {
  font-family: var(--font-display);
  font-size: clamp(3rem, 14vw, 11rem);
  line-height: 0.85;
  letter-spacing: -0.05em;
  color: var(--color-surface-offset-2);
  margin-top: var(--space-12);
  user-select: none;
}

/* ---------- Reveals ---------- */
.reveal {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transition:
      opacity 700ms var(--ease-out),
      clip-path 800ms var(--ease-out);
    clip-path: inset(0 0 18% 0);
  }
  .reveal.is-in {
    opacity: 1;
    clip-path: inset(0 0 0 0);
  }
  .reveal[data-delay='1'] {
    transition-delay: 80ms;
  }
  .reveal[data-delay='2'] {
    transition-delay: 160ms;
  }
  .reveal[data-delay='3'] {
    transition-delay: 240ms;
  }
}

/* ---------- Curseur personnalisé ---------- */
.cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
  pointer-events: none;
  z-index: 200;
  transform: translate3d(-100px, -100px, 0);
  transition:
    width 220ms var(--ease-out),
    height 220ms var(--ease-out),
    background 220ms var(--ease-out),
    opacity 220ms var(--ease-out);
  mix-blend-mode: normal;
  display: none;
}

@media (hover: hover) and (min-width: 1024px) {
  .cursor {
    display: block;
  }
}

.cursor.is-hover {
  width: 56px;
  height: 56px;
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
}

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 70;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-ink);
  color: var(--color-bg);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition:
    opacity 260ms var(--ease-out),
    transform 260ms var(--ease-out),
    background var(--transition-interactive);
}

.to-top[data-show='true'] {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.to-top:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--color-ink);
  color: var(--color-bg);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 5vw, var(--space-20));
  display: grid;
  gap: var(--space-8);
  position: relative;
  overflow: hidden;
}

@media (min-width: 860px) {
  .cta-band {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: center;
  }
}

.cta-band h2 {
  font-size: var(--text-xl);
  max-width: 24ch;
}

.cta-band p {
  color: color-mix(in srgb, var(--color-bg) 70%, transparent);
  font-size: var(--text-sm);
  margin-top: var(--space-4);
  max-width: 44ch;
}

.cta-band .btn--primary {
  background: var(--color-bg);
  color: var(--color-ink);
}

.cta-band .btn--primary:hover {
  background: var(--color-primary);
  color: #fff;
}

.cta-band::after {
  content: '';
  position: absolute;
  width: 460px;
  height: 460px;
  right: -120px;
  top: -200px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--color-primary) 55%, transparent), transparent 65%);
  pointer-events: none;
}

.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  position: relative;
  z-index: 1;
}