/* Vivoo. Feuille de style partagée
   Charte : navy #0B3B61, bleu #3B78A1, fond blanc, accent clair #EEF4F9
   Typographie : Montserrat (400 texte courant, 600 titres) */

:root {
  --navy: #0B3B61;
  --blue: #3B78A1;
  --white: #FFFFFF;
  --accent-light: #EEF4F9;
  --text: #1C2B36;
  --text-muted: #4C5C68;
  --border: #DCE6ED;
  --radius: 10px;
  --max-content: 720px;
  --max-wide: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-weight: 400;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  text-decoration: underline;
}

h1, h2, h3 {
  font-weight: 600;
  color: var(--navy);
  line-height: 1.25;
  margin: 0 0 0.6em;
}

h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 1.2em;
}

ul {
  margin: 0 0 1.2em;
  padding-left: 1.3em;
}

blockquote {
  margin: 0 0 1.2em;
  padding: 1em 1.4em;
  background: var(--accent-light);
  border-radius: var(--radius);
  font-style: italic;
  color: var(--text-muted);
}

.container {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.prose {
  max-width: var(--max-content);
  margin: 0 auto;
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--white);
  z-index: 50;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 28px;
  width: auto;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5em 0.75em;
  font-size: 1rem;
  color: var(--navy);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  flex-wrap: wrap;
}

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

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--navy);
  text-decoration: underline;
}

.has-submenu {
  position: relative;
}

.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 0;
  min-width: 240px;
  box-shadow: none;
}

.has-submenu:hover .submenu,
.has-submenu:focus-within .submenu {
  display: block;
}

.submenu a {
  display: block;
  padding: 0.5em 1em;
  font-size: 0.9rem;
  white-space: nowrap;
}

.submenu a:hover {
  background: var(--accent-light);
  text-decoration: none;
}

.nav-login {
  color: var(--navy) !important;
  font-weight: 600;
  white-space: nowrap;
}

.nav-cta {
  padding: 0.55em 1.2em;
  background: var(--navy);
  color: var(--white) !important;
  border-radius: var(--radius);
  font-weight: 600;
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--blue);
  text-decoration: none;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.8em 1.6em;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background: var(--blue);
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}

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

/* ---------- Layout sections ---------- */

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: var(--accent-light);
}

.section-navy {
  background: var(--navy);
  color: var(--white);
}

.section-navy h1,
.section-navy h2,
.section-navy h3 {
  color: var(--white);
}

.section-navy .text-muted {
  color: rgba(255, 255, 255, 0.8);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue);
  margin: 0 0 0.75em;
}

.section-navy .eyebrow {
  color: #9FC3DC;
}

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

.text-center {
  text-align: center;
}

/* ---------- Hero ---------- */

.hero {
  padding: 5rem 0 4rem;
}

.hero .prose {
  text-align: center;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-illustration {
  display: block;
  max-width: 460px;
  width: 100%;
  height: auto;
  margin: 3.5rem auto 0;
}

/* ---------- Cards / grids ---------- */

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

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

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

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.card h3 {
  margin-bottom: 0.5em;
}

.icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--navy);
  margin-bottom: 1rem;
  flex-shrink: 0;
}

.section-alt .icon-badge,
.card .icon-badge {
  background: var(--white);
  border: 1px solid var(--border);
}

.channel-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2.25rem;
  margin-top: 2.5rem;
  margin-bottom: 2.5rem;
}

.channel-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.channel-item .icon-badge {
  width: 64px;
  height: 64px;
  margin-bottom: 0;
  background: var(--white);
  border: 1px solid var(--border);
}

.channel-item span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
}

.card a.card-link {
  display: inline-block;
  margin-top: 0.75em;
  font-weight: 600;
}

.section-alt .card {
  background: var(--white);
}

/* ---------- Module list (product overview) ---------- */

.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

/* ---------- Steps ---------- */

.steps {
  counter-reset: step;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 900px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

.step {
  position: relative;
  padding-left: 3rem;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- FAQ ---------- */

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
}

.faq-item:first-child {
  padding-top: 0;
}

.faq-item h3 {
  margin-bottom: 0.5em;
}

.faq-category {
  margin-bottom: 0.5rem;
}

/* ---------- Breadcrumb ---------- */

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 1rem 0 0;
}

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

.breadcrumb .sep {
  margin: 0 0.4em;
}

/* ---------- Module page header ---------- */

.module-hero {
  padding: 3.5rem 0 3rem;
  border-bottom: 1px solid var(--border);
}

.module-nav-back {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.tag {
  background: var(--accent-light);
  color: var(--navy);
  border-radius: 999px;
  padding: 0.35em 0.9em;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--navy);
  color: var(--white);
  padding: 3.5rem 0;
  text-align: center;
}

.cta-band h2 {
  color: var(--white);
}

.cta-band .btn-primary {
  background: var(--white);
  color: var(--navy);
}

.cta-band .btn-primary:hover {
  background: var(--accent-light);
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.85);
  padding: 3.5rem 0 2rem;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.site-footer h3 {
  color: var(--white);
  font-size: 0.95rem;
  margin-bottom: 0.9em;
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer li {
  margin-bottom: 0.6em;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.85);
}

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

.footer-logo img {
  height: 24px;
  margin-bottom: 1rem;
  filter: brightness(0) invert(1);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.65);
}

/* ---------- Form ---------- */

form.contact-form {
  display: grid;
  gap: 1.25rem;
}

.contact-form label {
  display: block;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.4em;
  font-size: 0.9rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75em 0.9em;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: var(--white);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--blue);
  outline-offset: 1px;
}

.contact-form textarea {
  resize: vertical;
  min-height: 140px;
}

.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 560px) {
  .contact-form .form-row {
    grid-template-columns: 1fr;
  }
}

.contact-form .form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.6em;
}

.contact-form .form-checkbox input[type="checkbox"] {
  appearance: auto;
  width: 17px;
  height: 17px;
  margin: 0;
  margin-top: 0.15em;
  flex: 0 0 17px;
  accent-color: var(--navy);
}

.contact-form .form-checkbox label {
  margin-bottom: 0;
  font-weight: 400;
  color: var(--text);
  font-size: 0.8rem;
  line-height: 1.3;
}

.contact-form .optional {
  font-weight: 400;
  color: var(--text-muted);
}

/* ---------- Social icons ---------- */

.social-icons {
  display: flex;
  gap: 0.75rem;
  margin: 1rem 0 1.5rem;
}

.social-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--navy);
}

.social-icons a:hover {
  background: var(--accent-light);
}

/* ---------- Utility ---------- */

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

@media (max-width: 800px) {
  .main-nav {
    display: none;
  }
  .nav-toggle {
    display: inline-block;
  }
  body.nav-open .main-nav {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
  }
  body.nav-open .has-submenu .submenu {
    display: block;
    position: static;
    border: none;
    padding: 0.5rem 0 0 1rem;
  }
}