:root{
  --orange: orangered;
  --text: #f4f4f4;
  --muted: #cfcfcf;
  --bg: #0f0f0f;
  --panel: #141414;
  --line: rgba(255,255,255,.08);
  --shadow: 0 16px 40px rgba(0,0,0,.45);
}

.site-footer{
  background-image:
    linear-gradient(to top, rgba(0,0,0,.30), rgba(0,0,0,.18)),
    url(../image/alu_noir.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  color: var(--text);
  border-top: 3px solid var(--orange);
  margin-top: 48px;
}

.footer-content{
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(18px, 3.2vw, 28px) clamp(14px, 3vw, 24px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 3vw, 36px);
}

.footer-col{
  background: rgba(0,0,0,.18);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: clamp(14px, 2.4vw, 20px);
  box-shadow: var(--shadow);
}

.footer-col h3,
.footer-col h4{
  margin: 0 0 10px;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--orange);
  letter-spacing: .3px;
  text-shadow: 0 1px 1px rgba(0,0,0,.5);
}
.footer-col p{
  margin: 6px 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: .98rem;
}

.footer-links{
  list-style: none;
  margin: 0; padding: 0;
  display: grid; gap: 8px;
}
.footer-links a{
  color: var(--text);
  text-decoration: none;
  position: relative;
  padding: 4px 0;
  transition: color .18s ease, transform .12s ease;
}
.footer-links a::after{
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 36%; height: 2px;
  background: var(--orange);
  opacity: 0;
  transform: scaleX(.6);
  transition: transform .18s ease, opacity .18s ease;
}
.footer-links a:hover{
  color: #fff;
  transform: translateX(2px);
}
.footer-links a:hover::after{
  opacity: 1; transform: scaleX(1);
}

.footer-col p i{
  color: var(--orange);
  margin-right: 8px;
}

.social-icons{
  display: flex;
  gap: 10px;
  margin-top: 10px;
}
.social-icons a{
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(0,0,0,.35);
  color: var(--text);
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(0,0,0,.35);
  transition: transform .15s ease, background-color .18s ease, color .18s ease;
}
.social-icons a:hover{
  transform: translateY(-2px);
  background: rgba(0,0,0,.55);
  color: var(--orange);
}
.social-icons i{ font-size: 18px; }

.footer-bottom{
  border-top: 1px solid var(--line);
  background: linear-gradient(to top, rgba(0,0,0,.45), rgba(0,0,0,.2));
  padding: 14px clamp(14px, 3vw, 24px);
  text-align: center;
}
.footer-bottom p{
  margin: 0;
  color: var(--muted);
  font-size: .95rem;
}

@media (max-width: 980px){
  .footer-content{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px){
  .footer-content{ grid-template-columns: 1fr; }
}