:root {
  --primary: #4CAF50; --primary-dark: #45a049;
  --bg: #f4f4f4; --surface: #fff;
  --text: #333; --overlay: rgba(0,0,0,0.7);
  --radius: 8px;
}

* { box-sizing:border-box; }
body {
  font-family:'Segoe UI',sans-serif;
  background:var(--bg); color:var(--text);
  min-height:100vh; display:flex; flex-direction:column;
}
header {
  background:var(--primary); color:#fff;
  text-align:center; padding:1em;
  box-shadow:0 2px 4px rgba(0,0,0,0.1);
}
main {
  flex:1; padding:1em;
  max-width:600px; margin:auto; width:100%;
}
button {
  padding:.75em 1.5em;
  background:var(--primary); color:#fff;
  border:none; border-radius:var(--radius);
  font-size:1em; cursor:pointer;
  transition:background .2s;
}
button:hover { background:var(--primary-dark); }
.card {
  background:var(--surface);
  padding:1em; margin-top:1.5em;
  border-radius:var(--radius);
  box-shadow:0 1px 3px rgba(0,0,0,0.1);
}

/* Overlay QR */
#qr-overlay {
  position:fixed; top:0; left:0;
  width:100%; height:100%;
  background:var(--overlay);
  display:none; align-items:center;
  justify-content:center; z-index:1000;
}
#qr-modal {
  background:var(--surface);
  padding:1em; border-radius:var(--radius);
  position:relative; width:90%; max-width:400px;
}
#qr-close {
  position:absolute; top:.5em; right:.5em;
  background:transparent; border:none;
  font-size:1.5em; cursor:pointer; color:var(--text);
}

/* Tableau du panier */
.cart-table {
  width:100%; border-collapse:collapse;
  margin-top:1em;
}
.cart-table th, .cart-table td {
  border:1px solid #ddd; padding:.5em;
}
.cart-table th { background:#f2f2f2; text-align:left; }
.cart-table td:nth-child(2),
.cart-table td:nth-child(3),
.cart-table td:nth-child(4) {
  text-align:right;
}
.cart-table input.qty-input {
  width:60px; padding:.25em;
}
.remove-btn {
  background:#e53935; padding:.25em .5em;
}
.remove-btn:hover {
  background:#d32f2f;
}

/* QR du panier */
#cart-qr {
  text-align:center; margin-top:1em;
}
#cart-qr img {
  width:150px; height:150px;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 1em; right: 1em;
  background: var(--primary);
  color: #fff;
  padding: 0.75em 1.25em;
  border-radius: var(--radius);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  opacity: 0.95;
  font-size: 0.9em;
  z-index: 2000;
}

/* Version mobile : liste */
.cart-list {
  display: flex;
  flex-direction: column;
  gap: 1em;
}
.cart-item {
  background: #fff;
  padding: 1em;
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.cart-item > div { margin-bottom: 0.5em; }
.cart-item button {
  background: #e53935; padding: 0.5em 1em; border:none; border-radius:4px;
  color:white; cursor:pointer;
}
.cart-item button:hover { background: #d32f2f; }

/* Cache automatiquement le tableau sur mobile */
@media (max-width: 600px) {
  .cart-table { display: none; }
}
@media (min-width: 601px) {
  .cart-list { display: none; }
}