/* ==========================================================================
   RD Studio — Design System
   ========================================================================== */

:root {
  --color-black: #050505;
  --color-anthracite: #111111;
  --color-cream: #F5F2EC;
  --color-cream-alt: #F7F4EF;
  --color-white: #FFFFFF;
  --color-text-light: #FFFFFF;
  --color-text-muted: #C9C9C9;
  --color-text-dark: #111111;
  --color-text-secondary: #5A5A5A;
  --color-accent: #FF6A00;
  --color-accent-hover: #E55E00;
  --border-dark: rgba(255, 255, 255, 0.12);
  --border-light: rgba(0, 0, 0, 0.10);

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --container: 1280px;
  --container-wide: 1400px;
  --header-height: 72px;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 100px;

  --transition: 0.25s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-dark);
  background: var(--color-black);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

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

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 1000;
  padding: 0.75rem 1.25rem;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* Sections */
.section--dark {
  background: var(--color-black);
  color: var(--color-text-light);
}

.section--light {
  background: var(--color-cream);
  color: var(--color-text-dark);
}

.section--topo {
  position: relative;
}

.section--topo::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 400 400'%3E%3Cpath d='M0 80 Q100 60 200 80 T400 80 M0 160 Q100 140 200 160 T400 160 M0 240 Q100 220 200 240 T400 240 M0 320 Q100 300 200 320 T400 320' fill='none' stroke='%23000000' stroke-width='0.5' opacity='0.06'/%3E%3C/svg%3E");
  background-size: 400px 400px;
  pointer-events: none;
}

/* Topographic pattern (dark sections) */
.topo-pattern {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 400 400'%3E%3Cpath d='M0 80 Q100 60 200 80 T400 80 M0 160 Q100 140 200 160 T400 160 M0 240 Q100 220 200 240 T400 240 M0 320 Q100 300 200 320 T400 320' fill='none' stroke='%23ffffff' stroke-width='0.5' opacity='0.04'/%3E%3C/svg%3E");
  background-size: 400px 400px;
  pointer-events: none;
}

/* Typography */
.label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

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

.text-nowrap {
  white-space: nowrap;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: var(--color-anthracite);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-pill);
  padding: 0.4rem 1rem;
  margin-bottom: var(--space-md);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
}

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

.btn--ghost {
  background: transparent;
  color: var(--color-text-light);
  border: 1px solid var(--border-dark);
}

.btn--ghost:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

.btn--dark {
  background: var(--color-black);
  color: var(--color-white);
}

.btn--dark:hover {
  background: var(--color-anthracite);
  transform: translateY(-1px);
}

.btn--text {
  background: transparent;
  color: var(--color-text-muted);
  padding-inline: 0.5rem;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(255, 255, 255, 0.3);
}

.btn--text:hover {
  color: var(--color-white);
  text-decoration-color: var(--color-accent);
}

.btn--large {
  font-size: 1rem;
  padding: 1.1rem 2rem;
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0;
  white-space: nowrap;
  line-height: 1;
  overflow: visible;
}

.logo__mark {
  display: block;
  height: 2.2rem;
  width: auto;
  max-width: none;
  flex-shrink: 0;
  object-fit: contain;
}

.logo--footer .logo__mark {
  height: 1.95rem;
}

.logo__name {
  display: inline-flex;
  align-items: baseline;
}

.logo__studio {
  color: var(--color-text-light);
  letter-spacing: 0.06em;
  margin-right: -0.06em;
}

.logo__tld {
  font-size: 0.72em;
  font-weight: 500;
  color: var(--color-text-light);
  margin-left: 0;
  letter-spacing: 0;
  vertical-align: baseline;
  position: relative;
  top: -0.05em;
}

.section--light .logo__studio,
.logo--footer .logo__studio {
  color: var(--color-text-light);
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  overflow: visible;
  transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
}

.header--scrolled {
  background: rgba(5, 5, 5, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dark);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-md);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-white);
}

.header__cta {
  font-size: 0.8rem;
  padding: 0.65rem 1.1rem;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 40px;
  height: 40px;
  padding: 8px;
}

.menu-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:first-child {
  transform: translateY(4px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-top: var(--header-height);
  padding-bottom: var(--space-2xl);
  overflow: hidden;
  background: var(--color-black);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 65% center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(100deg, rgba(5, 5, 5, 0.5) 0%, rgba(5, 5, 5, 0.18) 32%, transparent 52%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
}

.hero__content {
  max-width: 580px;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero__trust li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.hero__trust .icon {
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ==========================================================================
   Expertises
   ========================================================================== */

.expertises {
  position: relative;
  padding-block: var(--space-3xl);
}

.expertises .container {
  position: relative;
  z-index: 1;
}

.expertises__header {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-xl);
  align-items: end;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.expertises__title {
  font-size: clamp(1.85rem, 4.2vw, 2.85rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--color-text-dark);
}

.expertises__title-second {
  display: inline;
}

.expertises__title-highlight {
  display: inline-block;
  vertical-align: top;
}

.expertises__title-line {
  display: block;
  width: 2.75rem;
  height: 3px;
  margin-top: 0.4rem;
  background: var(--color-accent);
  border-radius: 2px;
}

.expertises__header-right {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  max-width: 360px;
  justify-self: end;
  padding-left: clamp(1.25rem, 3vw, 2rem);
  border-left: 1px solid rgba(0, 0, 0, 0.12);
}

.expertises__header-right strong {
  color: var(--color-text-dark);
  font-weight: 600;
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.expertise-card {
  --card-accent: var(--color-accent);
  position: relative;
  min-height: 300px;
  padding: 1.65rem 1.5rem 1.5rem;
  border-radius: 16px;
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.expertise-card--orange { --card-accent: #FF6A00; }
.expertise-card--blue { --card-accent: #4D7CFF; }
.expertise-card--purple { --card-accent: #8B5CF6; }

.expertise-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.09);
}

.expertise-card__num {
  position: absolute;
  top: 0.35rem;
  left: 1.1rem;
  font-size: clamp(3.75rem, 7vw, 5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
  color: rgba(0, 0, 0, 0.045);
  pointer-events: none;
  user-select: none;
}

.expertise-card__body {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: 100%;
  padding-top: 2.5rem;
}

.expertise-card__head {
  max-width: 50%;
  margin-bottom: 0.5rem;
}

.expertise-card__icon {
  display: flex;
  align-items: center;
  margin-bottom: 0.55rem;
  color: var(--card-accent);
}

.expertise-card__icon .icon {
  width: 2.125rem;
  height: 2.125rem;
  stroke-width: 1.75;
}

.expertise-card__title {
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 0.45rem;
  color: var(--color-text-dark);
}

.expertise-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 1.25rem;
  width: 100%;
}

.expertise-card__tags {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem 0.65rem;
  margin-top: auto;
  padding-top: 0.85rem;
  width: 100%;
  border-top: 1px solid var(--border-light);
}

.expertise-card__tags li {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.45rem;
  line-height: 1.35;
}

.expertise-card__tags li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--card-accent);
  flex-shrink: 0;
}

.expertise-card__visual {
  position: absolute;
  right: -0.25rem;
  top: 0.25rem;
  width: 58%;
  max-width: 230px;
  z-index: 1;
  pointer-events: none;
}

.expertise-card__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.section-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: end;
  margin-bottom: var(--space-2xl);
}

.section-header__right {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 440px;
  justify-self: end;
}

.section-header__right strong,
.contact__text strong {
  color: var(--color-text-dark);
  font-weight: 600;
}

/* Icons — Lucide sprite */
.icon {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
}

.icon--sm {
  width: 1.125rem;
  height: 1.125rem;
}

.icon--md {
  width: 1.25rem;
  height: 1.25rem;
}

.icon--lg {
  width: 1.375rem;
  height: 1.375rem;
}

.icon--xl {
  width: 3rem;
  height: 3rem;
}

.container--wide {
  max-width: var(--container-wide);
}

/* ==========================================================================
   CTA banner
   ========================================================================== */

.cta-banner {
  position: relative;
  padding-block: clamp(3rem, 7vw, 5rem);
  overflow: hidden;
}

.cta-banner__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.cta-banner__title {
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-sm);
}

.cta-banner__title-lead {
  display: block;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-white);
  margin-bottom: 0.05em;
  line-height: 1.1;
}

.cta-banner__title-accent {
  display: block;
  font-size: clamp(2.35rem, 6.5vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}

.cta-banner__title-white {
  color: var(--color-white);
}

.cta-banner__sub {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 500px;
}

.cta-banner__sub strong {
  color: var(--color-white);
  font-weight: 600;
}

.btn--cta-banner {
  font-size: 1rem;
  padding: 1rem 1.75rem;
  white-space: nowrap;
}

/* ==========================================================================
   Méthode — Timeline
   ========================================================================== */

.methode {
  padding-block: var(--space-3xl);
}

.section-intro {
  margin-bottom: var(--space-2xl);
}

.section-intro .section-title {
  max-width: 600px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 var(--space-2xl);
  max-width: 960px;
}

.timeline__item {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-md);
  padding-bottom: var(--space-xl);
  position: relative;
}

.timeline__item:nth-child(odd) {
  padding-right: var(--space-lg);
}

.timeline__item:nth-child(even) {
  padding-left: var(--space-lg);
}

.timeline__marker {
  position: relative;
  display: flex;
  justify-content: center;
}

.timeline__marker span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--color-black);
  color: var(--color-white);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  position: relative;
  z-index: 1;
  box-shadow: 0 0 0 3px var(--color-cream), 0 0 0 4px rgba(255, 106, 0, 0.35);
}

.timeline__item:not(:last-child) .timeline__marker::after {
  content: "";
  position: absolute;
  top: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: calc(100% + var(--space-xl) - 2.5rem);
  background: linear-gradient(to bottom, rgba(255, 106, 0, 0.45), rgba(0, 0, 0, 0.08));
}

.timeline__content {
  padding-top: 0.35rem;
}

.timeline__title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
  color: var(--color-text-dark);
}

.timeline__title .icon {
  color: var(--color-accent);
}

.timeline__text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: 340px;
}

/* ==========================================================================
   Pourquoi
   ========================================================================== */

.pourquoi {
  padding-block: var(--space-3xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.feature__icon {
  color: var(--color-accent);
  margin-bottom: var(--space-md);
  opacity: 0.9;
}

.feature__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.feature__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.pourquoi__seo {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 800px;
  opacity: 0.7;
}

.pourquoi__seo strong {
  font-weight: 500;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Contact
   ========================================================================== */

.contact {
  padding-block: var(--space-3xl);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.contact__text {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 420px;
  margin-bottom: var(--space-lg);
}

.contact__text strong {
  color: var(--color-text-dark);
  font-weight: 600;
}

.contact__direct {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.contact__direct-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.contact__direct-link .icon {
  color: var(--color-accent);
}

.contact__direct-link:hover {
  color: var(--color-text-dark);
}

.form-row {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.form-row--2 {
  grid-template-columns: 1fr 1fr;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-dark);
}

.form-field label a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.form-required {
  color: var(--color-accent);
}

.form-field input,
.form-field select,
.form-field textarea {
  font: inherit;
  font-size: 0.9rem;
  color: var(--color-text-dark);
  background: var(--color-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.7;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: rgba(255, 106, 0, 0.4);
  box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.12);
}

.form-field input:invalid:not(:placeholder-shown),
.form-field textarea:invalid:not(:placeholder-shown) {
  border-color: rgba(220, 50, 50, 0.4);
}

.form-field select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235A5A5A' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.5rem;
}

.form-field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-field--checkbox {
  flex-direction: row;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: var(--space-md);
}

.form-field--checkbox input {
  width: auto;
  margin-top: 0.2rem;
  flex-shrink: 0;
  accent-color: var(--color-accent);
}

.form-field--checkbox label {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.form-honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

.form-actions {
  margin-top: var(--space-sm);
}

.form-actions .btn {
  width: 100%;
}

.form-actions .btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form-feedback {
  margin-top: var(--space-md);
  font-size: 0.875rem;
  line-height: 1.6;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
}

.form-feedback--success {
  background: rgba(34, 150, 80, 0.1);
  color: #1a6b3c;
}

.form-feedback--error {
  background: rgba(220, 50, 50, 0.08);
  color: #a32b2b;
}

.form-feedback--error a {
  color: inherit;
  font-weight: 600;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-lg);
  border-top: 1px solid var(--border-dark);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer__tagline {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
  line-height: 1.6;
  max-width: 280px;
}

.footer__heading {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.footer__nav ul,
.footer__contact ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__nav a,
.footer__contact-link {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.footer__contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.footer__contact-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer__contact-icon {
  color: var(--color-accent);
  flex-shrink: 0;
}

.footer__nav a:hover,
.footer__contact-link:hover {
  color: var(--color-white);
}

.footer__contact {
  position: relative;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-dark);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer__bottom nav {
  display: flex;
  gap: var(--space-md);
}

.footer__bottom a {
  transition: color var(--transition);
}

.footer__bottom a:hover {
  color: var(--color-white);
}

/* ==========================================================================
   Legal pages
   ========================================================================== */

.legal-page {
  padding-top: calc(var(--header-height) + var(--space-2xl));
  padding-bottom: var(--space-3xl);
  min-height: 100vh;
}

.legal-page__inner {
  max-width: 720px;
}

.legal-page__title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}

.legal-page__updated {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

.legal-block {
  margin-bottom: var(--space-xl);
}

.legal-block h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}

.legal-block p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-sm);
}

.legal-block a {
  color: var(--color-text-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-block a:hover {
  color: var(--color-accent);
}

.legal-list {
  margin-bottom: var(--space-sm);
}

.legal-list li {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  padding-left: 1rem;
  position: relative;
}

.legal-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

.reveal--delay {
  transition-delay: 0.15s;
}

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

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

  .expertise-card:hover {
    transform: none;
  }

  .btn:hover,
  .btn--primary:hover,
  .btn--dark:hover {
    transform: none;
  }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .expertises__header {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .expertises__header-right {
    justify-self: start;
    max-width: none;
    padding-left: 0;
    border-left: none;
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-light);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

  .timeline {
    grid-template-columns: 1fr;
    max-width: 520px;
  }

  .timeline__item:nth-child(odd),
  .timeline__item:nth-child(even) {
    padding-left: 0;
    padding-right: 0;
  }

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

@media (max-width: 768px) {
  .nav {
    position: fixed;
    inset: 0;
    top: var(--header-height);
    background: rgba(5, 5, 5, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: var(--space-lg);
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 99;
  }

  .nav--open {
    transform: translateX(0);
  }

  .nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .nav__link {
    font-size: 1.1rem;
    color: var(--color-text-light);
  }

  .header__cta {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero__bg img {
    object-position: 75% center;
  }

  .hero__overlay {
    background:
      linear-gradient(to bottom, rgba(5, 5, 5, 0.45) 0%, rgba(5, 5, 5, 0.15) 45%, transparent 70%);
  }

  .section-header {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .section-header__right {
    justify-self: start;
    max-width: none;
  }

  .expertise-grid {
    grid-template-columns: 1fr;
  }

  .expertise-card {
    min-height: auto;
  }

  .expertise-card__head {
    max-width: 100%;
  }

  .expertise-card__body {
    padding-top: 2.25rem;
  }

  .expertise-card__visual {
    width: min(62%, 200px);
    right: 0.5rem;
    top: 0.5rem;
  }

  .expertise-card__tags {
    grid-template-columns: 1fr;
  }

  .timeline__text {
    max-width: none;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .contact__inner {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .form-row--2 {
    grid-template-columns: 1fr;
  }

  .cta-banner__inner {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .cta-banner__sub {
    max-width: none;
  }

  .btn--cta-banner {
    width: 100%;
    justify-content: center;
    white-space: normal;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .expertises,
  .methode,
  .pourquoi,
  .contact {
    padding-block: var(--space-2xl);
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn {
    justify-content: center;
  }

  .hero__trust {
    flex-direction: column;
    gap: var(--space-xs);
  }
}