body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 850px; margin: 0 auto; padding: 20px; background: #fdfdfd; }
nav { margin-bottom: 30px; border-bottom: 2px solid #eee; padding-bottom: 10px; }
nav a { text-decoration: none; color: #2c3e50; font-weight: bold; margin-right: 20px; }
nav a:hover { color: #3498db; }
.card { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); border: 1px solid #eee; }
h1 { color: #2c3e50; margin-top: 0; }
.footer { margin-top: 40px; font-size: 0.85rem; color: #888; text-align: center; border-top: 1px solid #eee; padding-top: 20px; }
img.portfolio { max-width: 100%; border-radius: 8px; margin: 20px 0; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.highlight { background: #fff3cd; padding: 2px 5px; border-radius: 3px; }

.tooltip { position: relative; display: inline-block; cursor: help; color: #2980b9; font-weight: bold; margin-left: 5px; }
.tooltip .tooltiptext {
    visibility: hidden; width: 220px; background-color: #333; color: #fff; text-align: center;
    border-radius: 6px; padding: 10px; position: absolute; z-index: 1; bottom: 125%; left: 50%;
    margin-left: -110px; opacity: 0; transition: opacity 0.3s; font-size: 0.8rem; font-weight: normal;
}
.tooltip:hover .tooltiptext { visibility: visible; opacity: 1; }
.douane-reference-table { width: 100%; border-collapse: collapse; font-family: 'Arial', sans-serif; font-size: 0.85rem; margin: 20px 0; background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
.douane-reference-table th, .douane-reference-table td { border: 1px solid #c8d6e5; padding: 10px; text-align: center; vertical-align: middle; }
.douane-reference-table thead { background-color: #2c3e50; color: white !important; font-weight: bold; text-transform: uppercase; }

.metal-header { background: #34495e; color: white; font-weight: bold; font-size: 1.1rem; }
.sub-header { background: #ecf0f1; font-weight: bold; }

/* Style pour les icônes */
.poincon-icon { display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: bold; color: #2c3e50; }
.poincon-icon img { height: 20px; width: auto; }
.purity { color: #e67e22; font-weight: bold; }

@media (max-width: 768px) {
    .douane-reference-table { font-size: 0.75rem; }
    .poincon-icon { flex-direction: column; gap: 3px; }
    .poincon-icon img { height: 18px; }
}