* { box-sizing: border-box; margin: 0; padding: 0; }
body { 
    font-family: 'Segoe UI', Roboto, Arial, sans-serif; 
    line-height: 1.6; 
    background: #f4f4f4; 
    padding: 20px;
}
.container { 
    max-width: 1000px; 
    margin: 0 auto; 
    background: white; 
    padding: 30px; 
    border-radius: 10px; 
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
header { 
    text-align: center; 
    border-bottom: 3px solid #2c3e50; 
    padding-bottom: 20px; 
    margin-bottom: 30px;
}
header h1 { color: #2c3e50; font-size: 2em; }
header .codi { color: #7f8c8d; font-size: 0.9em; }
header .curs { 
    background: #3498db; 
    color: white; 
    padding: 5px 15px; 
    border-radius: 20px; 
    display: inline-block; 
    margin-top: 10px;
}
.resum {
    display: flex;
    justify-content: space-around;
    background: #ecf0f1;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 30px;
}
.resum-item { text-align: center; }
.resum-item .valor { font-size: 2em; font-weight: bold; color: #2c3e50; }
.resum-item .etiqueta { color: #7f8c8d; font-size: 0.9em; }
section { margin-bottom: 30px; }
section h2 { 
    color: #2c3e50; 
    border-bottom: 2px solid #3498db; 
    padding-bottom: 10px; 
    margin-bottom: 20px;
}
/* Taula d'assignatures */
table { width: 100%; border-collapse: collapse; margin-bottom: 20px; }
th, td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #ddd; }
th { background: #2c3e50; color: white; }
tr:hover { background: #f5f5f5; }
.codi-assig { 
    background: #27ae60; 
    color: white; 
    padding: 3px 8px; 
    border-radius: 4px; 
    font-weight: bold;
    font-size: 0.85em;
}
.hores { text-align: right; }
.hores-alta { color: #c0392b; font-weight: bold; }
.hores-mitjana { color: #f39c12; }
.hores-baixa { color: #27ae60; }
/* Graella d'alumnes */
.alumnes-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); 
    gap: 15px;
}
.alumne-card {
    background: #fff;
    border: 1px solid #ddd;
    border-left: 4px solid #3498db;
    border-radius: 0 8px 8px 0;
    padding: 15px;
    transition: transform 0.2s, box-shadow 0.2s;
}
.alumne-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.alumne-card .id { 
    background: #3498db; 
    color: white; 
    padding: 2px 8px; 
    border-radius: 4px; 
    font-size: 0.75em;
    float: right;
}
.alumne-card .nom-complet { 
    font-weight: bold; 
    color: #2c3e50; 
    font-size: 1.1em;
    margin-bottom: 5px;
}
.alumne-card .email { 
    color: #3498db; 
    font-size: 0.9em;
    text-decoration: none;
}
.alumne-card .email:hover { text-decoration: underline; }
.alumne-card .edat { 
    color: #7f8c8d; 
    font-size: 0.85em;
    margin-top: 5px;
}
footer {
    text-align: center;
    color: #7f8c8d;
    font-size: 0.85em;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}