body {
    background-color: #f5f7fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: 0.5px;
}

.navbar-text {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-left: 1px solid rgba(255,255,255,0.2);
    padding-left: 0.75rem;
}

.card {
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}

.display-4 {
    font-weight: 700;
    font-size: 2.5rem;
}

.table th {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: #6c757d;
}

.badge {
    font-weight: 500;
}

code {
    font-size: 0.8rem;
    color: #6f42c1;
}

.timeline .badge {
    min-width: 28px;
    min-height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
}

footer {
    margin-top: auto;
}

.alert {
    border-left: 4px solid;
}
.alert-success { border-left-color: #198754; }
.alert-danger { border-left-color: #dc3545; }
.alert-warning { border-left-color: #ffc107; }