:root {
    --bs-primary-rgb: 20, 160, 170;
    --bs-secondary-rgb: 108, 117, 125;
    --bs-success-rgb: 40, 190, 100;
    --bs-info-rgb: 0, 180, 220;
    --bs-warning-rgb: 255, 180, 0;
    --bs-danger-rgb: 240, 80, 70;
}

body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.app-header {
    background: linear-gradient(135deg, rgb(var(--bs-primary-rgb)), #0a646e);
    color: white;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px B6px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.app-header img {
    height: 50px;
    filter: drop-shadow(0 2px 2px rgba(0,0,0,0.2));
}

.app-header h1 {
    font-size: 1.8rem;
    margin: 0;
}

.status-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

.status-ok { background-color: var(--bs-success); }
.status-low { background-color: var(--bs-warning); }
.status-out { background-color: var(--bs-danger); }

.card {
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}

.table-hover tbody tr:hover {
    background-color: rgba(var(--bs-primary-rgb), 0.05);
    cursor: pointer;
}

.modal-header {
    background-color: rgb(var(--bs-primary-rgb));
    color: white;
}

.btn-close-white {
    filter: invert(1) grayscale(100%) brightness(200%);
}

.alert-card {
    border-left: 5px solid;
    padding: 1rem;
}

.alert-card.alert-danger { border-left-color: var(--bs-danger); }
.alert-card.alert-warning { border-left-color: var(--bs-warning); }


.expiring-soon {
    color: #fd7e14; /* bootstrap orange */
    font-weight: bold;
}

.expired {
    color: var(--bs-danger);
    font-weight: bold;
    text-decoration: line-through;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}