:root {
  --bg: #ffffff;
  --ink: #1b2559;
  --muted: #4a5578;
  --dark: #12151c;
  --bar: #1f2a33;
  --green: #22a05a;
  --teal: #0f8fa0;
  --card: #ffffff;
  --line: #dde2ee;
  --radius: 10px;
  --font: "Segoe UI", Helvetica, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; }

/* ---------- Bande inférieure ---------- */
.bottom-bar {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: .4rem 4vw;
  background: #f2f2f2; color: #1f2a33;
  font-size: .8rem; font-weight: 600;
}
.bottom-bar a:hover { text-decoration: underline; }

/* ---------- Header ---------- */
.header-wrap { position: sticky; top: 0; z-index: 50; }
.header-band {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: .3rem 4vw; background: #f2f2f2; color: #1f2a33;
  font-size: .78rem; font-weight: 600;
  border-bottom: 1px solid #e0e0e0;
}
.header-band a:hover { text-decoration: underline; }
.site-header {
  position: relative;
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 2rem;
  padding: 1rem 4vw;
  background: var(--bar);
  color: #fff;
}
.logo { display: flex; align-items: center; gap: .6rem; font-size: 1.55rem; font-weight: 700; white-space: nowrap; }
.logo b { color: var(--green); }
.main-nav { display: flex; justify-content: center; align-items: center; gap: 2.2rem; }
.main-nav a { white-space: nowrap; font-size: .95rem; font-weight: 600; padding: .2rem 0; border-bottom: 2px solid transparent; }
.main-nav a:hover { color: var(--green); }
.main-nav a.active { color: var(--green); border-bottom-color: var(--green); }
.header-actions { display: flex; align-items: center; gap: 1.2rem; margin-right: 1.5rem; }
.lang { position: relative; }
.lang-btn {
  display: flex; align-items: center; gap: .3rem;
  background: transparent; color: #fff; font: inherit; font-weight: 600; font-size: .9rem;
  border: 1px solid rgba(255,255,255,.4); border-radius: 6px; padding: .35rem .7rem; cursor: pointer;
}
.lang-btn:hover { border-color: var(--green); }
.lang-menu {
  position: absolute; right: 0; top: calc(100% + .4rem); z-index: 60;
  list-style: none; margin: 0; padding: .3rem; min-width: 8rem;
  background: var(--bar); border: 1px solid rgba(255,255,255,.2); border-radius: 8px;
}
.lang-menu li { padding: .5rem .8rem; border-radius: 6px; cursor: pointer; font-size: .9rem; }
.lang-menu li:hover, .lang-menu li[aria-selected="true"] { background: rgba(255,255,255,.1); color: var(--green); }
.cart-btn {
  display: flex; align-items: center; gap: .4rem;
  background: none; border: 0; color: #fff; font: inherit; font-weight: 600; cursor: pointer;
}
#cart-count {
  background: var(--green); color: #fff; border-radius: 999px;
  font-size: .75rem; padding: 0 .45rem; min-width: 1.2rem; text-align: center;
}
.menu-toggle { display: none; background: none; border: 0; color: #fff; font-size: 1.6rem; cursor: pointer; margin-left: auto; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-block; padding: .85rem 1.6rem;
  border-radius: 6px; border: 2px solid transparent;
  font: inherit; font-weight: 700; font-size: .95rem; cursor: pointer;
  transition: transform .15s, background .15s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--green); color: #fff;
  box-shadow: 0 0 0 rgba(34,160,90,0);
  transition: transform .2s ease, box-shadow .25s ease, background .25s ease;
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: #1b8a4d;
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 8px 18px rgba(34,160,90,.45);
}
.btn-primary:active { transform: translateY(0) scale(.97); box-shadow: 0 2px 6px rgba(34,160,90,.4); }

.btn-outline {
  border-color: var(--ink); color: var(--ink);
  background: linear-gradient(var(--ink), var(--ink)) no-repeat left / 0% 100%;
  transition: background-size .3s ease, color .3s ease, transform .2s ease, box-shadow .25s ease;
}
.btn-outline:hover, .btn-outline:focus-visible {
  background-size: 100% 100%;
  color: #fff;
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 8px 18px rgba(27,37,89,.3);
}
.btn-outline:active { transform: translateY(0) scale(.97); }
.btn-light { background: #fff; color: var(--ink); padding: .6rem 1.4rem; }
.btn-dark { background: #22274a; color: #fff; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-pill { border-radius: 999px; padding: .9rem 2.4rem; }

/* ---------- Hero ---------- */
.hero { padding: 5rem 4vw 3.5rem; max-width: 1200px; margin: 0 auto; }
.hero h1 { font-size: clamp(2.2rem, 5.5vw, 3.6rem); font-weight: 900; letter-spacing: -.5px; color: #000; }
.hero h1 span { color: var(--green); }
.hero p { max-width: 460px; margin: 1.4rem 0 2rem; color: var(--muted); }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ---------- Catégories ---------- */
.categories {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem;
  max-width: 1200px; margin: 0 auto; padding: 0 4vw 3rem;
}
.cat-card {
  min-height: 320px; padding: 2.5rem 1.5rem;
  border-radius: var(--radius); color: #fff; text-align: center;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .8rem;
  background-color: #14173a;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
/* Photos : placez vos images dans le dossier "images" */
.cat-bois {
  background-image:
    linear-gradient(rgba(10,10,25,.35), rgba(10,10,25,.45)),
    url("images/bois.jpg");
}
.cat-rad {
  background-image:
    linear-gradient(rgba(10,10,25,.35), rgba(10,10,25,.45)),
    url("images/radiateur.jpg");
}
.cat-card h2 { font-size: 1.8rem; text-shadow: 0 2px 8px rgba(0,0,0,.6); }
.cat-card p { margin: 0 0 .6rem; max-width: 340px; text-shadow: 0 1px 6px rgba(0,0,0,.7); }

/* ---------- Sections ---------- */
.section { max-width: 1200px; margin: 0 auto; padding: 4rem 4vw; }
.eyebrow { display: block; margin-bottom: .6rem; font-size: .75rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--teal); }
.title { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 900; margin-bottom: 1rem; }
.lead { color: var(--muted); max-width: 540px; margin: 0 0 1.5rem; }

/* Guide des bois */
.woods {
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin-top: 2rem; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.woods article { padding: 1.6rem 1.4rem; border-right: 1px solid var(--line); }
.woods article:last-child { border-right: 0; }
.woods h3 { font-size: 1.4rem; margin-bottom: .3rem; }
.tag { display: block; font-size: .72rem; font-weight: 700; letter-spacing: .8px; text-transform: uppercase; color: var(--teal); margin-bottom: .8rem; }
.woods p { margin: 0; color: var(--muted); font-size: .92rem; }
.woods strong { color: var(--ink); }

/* Livraison */
.delivery-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem; align-items: center; }
.checks { list-style: none; margin: 0; padding: 0; font-weight: 600; font-size: .92rem; }
.checks li { margin-bottom: .4rem; }
.checks li::before { content: "✓"; margin-right: .5rem; color: var(--green); }
.delivery-card { background: #eef1fb; border: 1px solid var(--line); border-radius: 14px; padding: 2rem; }
.truck { font-size: 2.2rem; margin-bottom: .6rem; }
.delivery-card h3 { font-size: 1.2rem; margin-bottom: .5rem; }
.delivery-card p { color: var(--muted); margin: 0 0 1.4rem; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 3rem; margin-top: 1rem; }
.contact-item { display: flex; gap: .8rem; align-items: center; margin-bottom: 1rem; }
.contact-item .ico { font-size: 1.4rem; }
.contact-item small { display: block; font-size: .7rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); }
.contact-item a { font-weight: 700; }
form { display: grid; gap: 1rem; }
label { font-size: .85rem; font-weight: 600; display: grid; gap: .3rem; }
input, textarea {
  width: 100%; padding: .85rem 1rem; font: inherit;
  border: 1px solid var(--ink); border-radius: 4px; background: transparent; color: var(--ink);
}
input.invalid, textarea.invalid { border-color: #c0392b; background: #fdecea; }
textarea { resize: vertical; }
.form-status { margin: 0; min-height: 1.4rem; font-weight: 600; }
.form-status.ok { color: var(--green); }
.form-status.err { color: #c0392b; }
form .btn { justify-self: end; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bar); color: #dfe4ff; padding: 3rem 4vw 1.5rem; margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; max-width: 1200px; margin: 0 auto; }
.footer-grid h4 { margin-bottom: .8rem; }
.footer-grid a { display: block; margin-bottom: .4rem; font-size: .92rem; }
.footer-grid a:hover { text-decoration: underline; }
.footer-grid p { font-size: .92rem; margin: .8rem 0; }
.footer-logo b { color: #1fb5a0; }
.footer-q a { display: inline; }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  max-width: 1200px; margin: 2rem auto 0; padding-top: 1.2rem;
  border-top: 1px solid rgba(255,255,255,.12); font-size: .8rem;
}
.footer-links { display: flex; gap: 1.2rem; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translate(-50%, 120%);
  background: var(--dark); color: #fff; padding: .8rem 1.4rem; border-radius: 8px;
  transition: transform .3s; z-index: 100;
}
.toast.show { transform: translate(-50%, 0); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .woods { grid-template-columns: repeat(2, 1fr); }
  .woods article:nth-child(2) { border-right: 0; }
  .woods article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .delivery-grid, .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 1000px) {
  .main-nav { gap: 1.2rem; }
  .logo { font-size: 1.35rem; }
}
@media (max-width: 720px) {
  .site-header { display: flex; gap: 1rem; }
  .header-actions { margin-right: 0; margin-left: auto; gap: .8rem; }
  .header-band { justify-content: center; text-align: center; }
  .header-band span { display: none; }
  .bottom-bar { justify-content: center; text-align: center; }
  .bottom-bar span { display: none; }
  .menu-toggle { display: block; margin-left: 0; order: 3; }
  .main-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; margin: 0; background: var(--bar);
    padding: .5rem 4vw 1rem;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: .8rem 0; }
  .categories { grid-template-columns: 1fr; }
  .woods { grid-template-columns: 1fr; }
  .woods article { border-right: 0; border-bottom: 1px solid var(--line); }
  .woods article:last-child { border-bottom: 0; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

/* ---------- Section « Quel bois pour quel besoin ? » : couleurs ---------- */
#guide .eyebrow,
#guide .tag { color: var(--green); }
#guide .title,
#guide .woods h3,
#guide .woods strong { color: #000; }

/* ---------- Section Livraison : couleurs ---------- */
#livraison .eyebrow { color: var(--green); }
#livraison .title,
#livraison .checks li,
#livraison .delivery-card h3 { color: #000; }

/* ---------- Section Contact : couleurs ---------- */
#contact .eyebrow,
#contact .contact-item small { color: var(--green); }
#contact .title,
#contact .contact-item a,
#contact label,
#contact input,
#contact textarea { color: #000; }

/* Champ anti-spam invisible */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Boutons « Nous contacter » (livraison) et « Envoyer la demande » : clignotement bleu au survol */
@keyframes clignote-bleu {
  0%, 100% { background-color: #22274a; }
  50%      { background-color: #4a5bd1; }
}
.delivery-card .btn:hover,
.delivery-card .btn:focus-visible,
#contact-form .btn:hover,
#contact-form .btn:focus-visible {
  animation: clignote-bleu .8s ease-in-out infinite;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .delivery-card .btn:hover,
  #contact-form .btn:hover { animation: none; }
}