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

body{
  font-family:'Inter',sans-serif;
}

.container-custom{
  max-width:1280px;
  margin:auto;
  padding:1.5rem;
  display:flex;
  justify-content:space-between;
  align-items:center;
}

.header{
  position:fixed;
  width:100%;
  top:0;
  left:0;
  z-index:100;
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,0.08);
}

.logo{
  font-size:1.5rem;
  font-weight:600;
}

nav{
  display:flex;
  gap:2rem;
}

nav a{
  text-transform:uppercase;
  font-size:.8rem;
  letter-spacing:.2em;
  transition:.4s;
}

nav a:hover{
  opacity:.5;
}

.section-label{
  color:#666;
  letter-spacing:.25em;
  margin-bottom:2rem;
}

.section-title{
  font-size:4rem;
  font-weight:600;
  line-height:1;
}

.section-text{
  color:#b5b5b5;
  font-size:1.2rem;
  line-height:2;
}

.service-card{
  border:1px solid rgba(255,255,255,.08);
  padding:2rem;
  transition:.5s;
  background:#141414;
}

.service-card:hover{
  transform:translateY(-10px);
  border-color:white;
}

.service-card h3{
  font-size:1.4rem;
  margin-bottom:1rem;
}

.service-card p{
  color:#999;
  line-height:1.8;
}

.brand-card{
  position: relative;
  overflow: hidden;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 500;
  border-radius: 18px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);

  transition: all .5s ease;

  cursor: pointer;
}

.brand-card:hover{
  transform:scale(1.03);
  border-color:white;
}

.input-style{
  width:100%;
  background:transparent;
  border:1px solid rgba(255,255,255,.1);
  padding:1rem;
  color:white;
}

.submit-btn{
  border:1px solid rgba(255,255,255,.2);
  padding:1rem 2rem;
  transition:.4s;
}

.submit-btn:hover{
  background:white;
  color:black;
}

/* HAMBURGER */

.hamburger-line{
  width:24px;
  height:1.5px;
  background:white;
  transition:.4s;
}

/* MOBILE MENU */

.mobile-link{
  font-size:1rem;
  text-transform:uppercase;
  letter-spacing:.2em;
  transition:.4s;
}

.mobile-link:hover{
  opacity:.5;
}

/* MENU OPEN */

.menu-open #mobile-menu{
  transform:translateX(0);
}

/* ANIMATION */

.menu-open .hamburger-line:nth-child(1){
  transform:translateY(7px) rotate(45deg);
}

.menu-open .hamburger-line:nth-child(2){
  opacity:0;
}

.menu-open .hamburger-line:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
}

/* LIGHT GLOW ON HOVER */
.brand-card:hover{
  transform: translateY(-10px) scale(1.02);
  border-color: rgba(255,255,255,0.25);
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}

/* ===== BIG LETTER BACKGROUND ===== */

.icona-text{
  position: absolute;
  right: -15px;
  top: 50%;
  transform: translateY(-50%) rotate(-15deg);

  font-size: 7rem;
  font-weight: 800;

  opacity: 0.05;

  pointer-events: none;
  user-select: none;

  transition: all .5s ease;
}

/* LETTERA CHE “SI ACCENDE” */
.brand-card:hover .icona-text{
  opacity: 0.12;
  transform: translateY(-50%) rotate(-10deg) scale(1.05);
}

/* ===== VARIANTI COLORI ===== */

.apple .icona-text { color: white; }
.samsung .icona-text { color: #4f8cff; }
.microsoft .icona-text { color: #00a2ed; }
.logitech .icona-text { color: #9ca3af; }
.asus .icona-text { color: #ffffff; }
.dell .icona-text { color: #3b82f6; }
.hp .icona-text { color: #60a5fa; }
.sony .icona-text { color: #ffffff; }
.canon .icona-text { color: #ef4444; }
.dyson .icona-text { color: #a3a3a3; }
.lg .icona-text { color: #ef4444; }
.msi .icona-text { color: #f97316; }