/* =========================================================
   Infoduo — Feuille de style globale
   Style minimaliste inspiré d'Apple
   ========================================================= */

:root {
  --color-bg: #ffffff;
  --color-bg-soft: #f5f5f7;
  --color-bg-dark: #1d1d1f;
  --color-text: #1d1d1f;
  --color-text-soft: #6e6e73;
  --color-text-muted: #86868b;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-border: #d2d2d7;
  --color-success: #34c759;

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", Helvetica, Arial, sans-serif;

  --container: 1200px;
  --radius: 18px;
  --radius-sm: 12px;

  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
  font-size: 17px;
}

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

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

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

/* ---------- Typographie ---------- */
h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.4rem, 2.5vw, 1.75rem);
}

p {
  color: var(--color-text-soft);
  font-size: 1.1rem;
}

.lead {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 400;
  color: var(--color-text-soft);
  max-width: 760px;
  margin: 0 auto;
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / Navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.nav__logo:hover {
  text-decoration: none;
  color: var(--color-text);
}

.nav__logo img {
  height: 40px;
  width: auto;
  display: block;
}

.nav__logo span {
  color: var(--color-accent);
}

.nav__menu {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}

.nav__menu a {
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 400;
}

.nav__menu a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav__menu a.active {
  color: var(--color-accent);
  font-weight: 500;
}

.nav__cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 980px;
  font-size: 0.9rem;
  font-weight: 500;
}

.nav__cta:hover {
  background: var(--color-accent-hover);
  text-decoration: none;
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
}

/* ---------- Boutons ---------- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 980px;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
  font-family: inherit;
}

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

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn--secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}

.btn--secondary:hover {
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
}

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

.btn--ghost:hover {
  background: var(--color-bg-soft);
  text-decoration: none;
}

.btn-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

/* ---------- Sections ---------- */
section {
  padding: 100px 0;
}

.section--soft {
  background: var(--color-bg-soft);
}

.section--dark {
  background: var(--color-bg-dark);
  color: #fff;
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: #fff;
}

.section--dark p {
  color: #a1a1a6;
}

.section__head {
  text-align: center;
  margin-bottom: 64px;
}

.section__eyebrow {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

/* ---------- Hero ---------- */
.hero {
  padding: 120px 0 100px;
  text-align: center;
  background: linear-gradient(180deg, #fafafa 0%, #ffffff 100%);
}

.hero h1 {
  margin-bottom: 24px;
}

.hero__tagline {
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
  color: var(--color-text-soft);
  max-width: 720px;
  margin: 0 auto 16px;
  font-weight: 400;
}

.hero__meta {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

/* ---------- Grid de cartes ---------- */
.grid {
  display: grid;
  gap: 24px;
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--color-bg-soft);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}

.card--white {
  background: #fff;
  border: 1px solid var(--color-border);
}

.card__icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
  display: block;
}

.card h3 {
  margin-bottom: 12px;
}

.card p {
  font-size: 1rem;
}

.card a.card__link {
  display: inline-block;
  margin-top: 16px;
  font-weight: 500;
  color: var(--color-accent);
}

/* ---------- Feature blocks (Apple-style alternating) ---------- */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 100px;
}

.feature:last-child { margin-bottom: 0; }

.feature--reverse .feature__media { order: 2; }
.feature--reverse .feature__content { order: 1; }

.feature__media {
  background: var(--color-bg-soft);
  border-radius: var(--radius);
  padding: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  min-height: 360px;
}

.feature__content h2 {
  margin-bottom: 20px;
}

.feature__content p {
  font-size: 1.15rem;
  margin-bottom: 16px;
}

.feature__list {
  list-style: none;
  margin-top: 20px;
}

.feature__list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 1rem;
}

.feature__list li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: 700;
  margin-right: 12px;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: var(--color-bg-dark);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}

.cta-banner h2 {
  color: #fff;
  margin-bottom: 20px;
}

.cta-banner p {
  color: #a1a1a6;
  font-size: 1.2rem;
  margin-bottom: 32px;
}

/* ---------- Formulaire ---------- */
.form {
  max-width: 680px;
  margin: 0 auto;
  background: #fff;
  padding: 48px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form__group {
  margin-bottom: 20px;
}

.form__label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form__input,
.form__textarea,
.form__select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  transition: border-color var(--transition);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form__textarea {
  resize: vertical;
  min-height: 140px;
}

.form__check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text-soft);
  margin-bottom: 24px;
}

.form__check input {
  margin-top: 4px;
}

.form__submit {
  width: 100%;
  padding: 16px;
  font-size: 1.05rem;
}

/* ---------- Liste villes / zones ---------- */
.cities {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 32px;
}

.city-tag {
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 10px 20px;
  border-radius: 980px;
  font-size: 0.95rem;
  color: var(--color-text);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-bg-soft);
  padding: 60px 0 30px;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: var(--color-text-soft);
}

.footer-col a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--color-text-muted);
}

/* ---------- Stat row ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.stat {
  text-align: center;
  padding: 24px;
}

.stat__num {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.03em;
  display: block;
  margin-bottom: 8px;
}

.stat__label {
  color: var(--color-text-soft);
  font-size: 1rem;
}

/* ---------- Process steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.step {
  text-align: center;
  padding: 24px;
}

.step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.95rem;
}

/* ---------- Floating contact ---------- */
.float-contact {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--color-accent);
  color: #fff;
  padding: 14px 22px;
  border-radius: 980px;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0,113,227,0.4);
  z-index: 50;
  font-size: 0.95rem;
}

.float-contact:hover {
  background: var(--color-accent-hover);
  color: #fff;
  text-decoration: none;
  transform: translateY(-2px);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  section { padding: 70px 0; }
  .hero { padding: 80px 0 60px; }

  .nav__menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--color-border);
    gap: 16px;
  }

  .nav__menu.is-open { display: flex; }

  .nav__toggle { display: block; }

  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }

  .feature {
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 60px;
  }

  .feature--reverse .feature__media { order: 0; }
  .feature--reverse .feature__content { order: 0; }

  .form { padding: 32px 24px; }
  .form__row { grid-template-columns: 1fr; }

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

  .stats { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 540px) {
  .footer-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .feature__media { padding: 40px; font-size: 4rem; min-height: 240px; }
}