:root{
    --primary:#1f4e79;
    --primary-dark:#17395a;
    --soft:#f3f6fa;
    --text:#263238;
}
*{box-sizing:border-box}
body{font-family:Arial, Helvetica, sans-serif;background:var(--soft);color:var(--text);min-height:100vh;display:flex;flex-direction:column}
.navbar{background:linear-gradient(90deg,var(--primary-dark),var(--primary))}
.hero-card{background:linear-gradient(135deg,#ffffff,#e9f1f8);border-radius:24px;box-shadow:0 10px 30px rgba(31,78,121,.12);border:1px solid rgba(31,78,121,.08)}
.card{border-radius:18px}.feature-card{height:100%;transition:.2s ease;border:0;box-shadow:0 8px 22px rgba(0,0,0,.06)}.feature-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(0,0,0,.10)}
.btn-primary{background:var(--primary);border-color:var(--primary)}.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark)}
.form-control,.form-select{border-radius:12px;padding:.7rem .9rem}.academic-footer{background:#fff;border-top:0;color:#52616b;text-decoration:none}.academic-footer *{text-decoration:none!important}.min-vh-card{min-height:72vh}
.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.calendar-head{font-weight:700;text-align:center;color:#496579;padding:8px}.calendar-cell{min-height:95px;border:1px solid #dce5ee;background:#fff;border-radius:16px;padding:10px;text-align:left;position:relative}.calendar-cell.empty{background:transparent;border:0}.calendar-cell.has-items{border-color:#8ab4d8;box-shadow:0 6px 18px rgba(31,78,121,.10)}.day-number{font-weight:700;display:block;margin-bottom:10px}
@media(max-width:768px){.calendar-grid{gap:4px}.calendar-cell{min-height:70px;border-radius:10px;padding:6px;font-size:.82rem}.calendar-head{font-size:.8rem}.badge{font-size:.65rem}.display-6{font-size:1.8rem}}