:root {
    --bs-body-bg: #f3f3f3;
    --bs-body-color: #212529;
    --card-bg: #fff;
    --card-border-color: #e9ecef;
    --card-hover-shadow: rgba(0, 0, 0, 0.08);
    --card-active-shadow: rgba(0, 0, 0, 0.05);
    --text-muted: #6c757d;
}

body {
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    font-family: 'Inter', sans-serif;
    transition: background-color 0.3s ease;
}

.espacamento-icone {
    margin-right: 12px;
}

.container-principal {
    max-width: 1280px;
    margin: auto;
    position: relative;
}

.form-control,
.form-select {
    background-color: transparent;
    color: var(--bs-body-color);
    border: 1px solid var(--card-border-color);
    transition: border-color 0.3s ease;
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control:focus,
.form-select:focus,
.btn:focus,
.nav-tabs .nav-link:focus {
    box-shadow: none;
}

.badge.bg-lab-info   { background-color: #22c55e; }
.badge.bg-sala-aula  { background-color: #64748b; }
.badge.bg-lab-fisica { background-color: #3b82f6; }
.badge.bg-auditorio  { background-color: #f59e0b; }