:root {
    --primary: #18AACC;
    --primary-dark: #128aa6;
    --glass-bg: rgba(255,255,255,0.55);
    --glass-border: rgba(255,255,255,0.35);
}


.top-bar {
    background: var(--glass-bg);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(24,170,204,0.12);
    padding: 20px 24px;
    margin: 24px;
    animation: fadeDown .6s ease;
}

@keyframes fadeDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

label {
    font-weight: 600;
    font-size: .85rem;
    color: #345;
}

.form-select, .form-control {
    border-radius: 10px;
    border: 1px solid #d5e9ee;
    background: rgba(255,255,255,0.7);
    transition: .25s;
}

    .form-select:focus, .form-control:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(24,170,204,0.15);
    }

.btn-primary-glass {
    background: linear-gradient(135deg,var(--primary),var(--primary-dark));
    border: none;
    color: #fff;
    border-radius: 10px;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(24,170,204,0.35);
    transition: .25s;
}

    .btn-primary-glass:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(24,170,204,0.45);
        color: #fff;
    }

.btn-outline-glass {
    background: rgba(255,255,255,0.6);
    border: 1px solid var(--primary);
    color: var(--primary);
    border-radius: 4px;
    font-weight: 600;
    transition: .25s;
}

    .btn-outline-glass:hover {
        background: var(--primary);
        color: #fff;
    }

.blank-state {
    margin: 80px 24px;
    text-align: center;
    animation: fadeUp .7s ease;
}

    .blank-state i {
        font-size: 64px;
        color: rgba(24,170,204,0.35);
        margin-bottom: 18px;
        display: block;
    }

    .blank-state h4 {
        color: #5a7580;
        font-weight: 700;
    }

    .blank-state p {
        color: #8fa4ab;
        max-width: 420px;
        margin: 8px auto 22px auto;
    }

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Offcanvas glass */
.offcanvas {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    border-left: 1px solid var(--glass-border);
}

.offcanvas-header {
    background: linear-gradient(135deg,var(--primary),var(--primary-dark));
    color: #fff;
}

    .offcanvas-header .btn-close {
        filter: invert(1);
    }

.oc-filter-bar {
    background: rgba(24,170,204,0.06);
    border: 1px solid rgba(24,170,204,0.15);
    border-radius: 14px;
    padding: 14px;
    margin-bottom: 16px;
}

    .oc-filter-bar label {
        font-size: .72rem;
        color: #345;
        font-weight: 700;
        margin-bottom: 3px;
    }

    .oc-filter-bar .form-select, .oc-filter-bar .form-control {
        font-size: .85rem;
    }

.note-badge {
    background: rgba(24,170,204,0.12);
    color: var(--primary-dark);
    border-radius: 20px;
    padding: 6px 14px;
    font-size: .85rem;
}

/* 3-level tree inside offcanvas */
.tree-node {
    margin-bottom: 6px;
}

.building-row, .wing-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    padding: 9px 10px;
    cursor: pointer;
    border-radius: 10px;
    transition: .2s;
}

.building-row {
    color: var(--primary-dark);
    background: rgba(24,170,204,0.07);
}

    .building-row:hover {
        background: rgba(24,170,204,0.14);
    }

.wing-row {
    color: #7a4fc7;
    margin-left: 22px;
    background: rgba(122,79,199,0.06);
}

    .wing-row:hover {
        background: rgba(122,79,199,0.12);
    }

.collapse-icon {
    transition: .3s;
    width: 12px;
}

.rotated {
    transform: rotate(-90deg);
}

.wing-body {
    margin-left: 22px;
    padding-top: 4px;
}

.building-body {
    padding-top: 4px;
}

.sortable-unit {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fff;
    border: 1px solid #e2eef1;
    border-radius: 10px;
    padding: 9px 12px;
    margin: 6px 0 6px 46px;
    cursor: grab;
    transition: .2s;
}

    .sortable-unit:hover {
        box-shadow: 0 4px 10px rgba(24,170,204,0.15);
        border-color: var(--primary);
    }

    .sortable-unit.selected {
        background: linear-gradient(135deg,rgba(24,170,204,0.18),rgba(24,170,204,0.05));
        border: 1px solid var(--primary);
    }

    .sortable-unit.placeholder {
        border: 2px dashed var(--primary);
        background: rgba(24,170,204,0.08);
        height: 42px;
        margin: 6px 0 6px 46px;
    }

    .sortable-unit .move-arrows button {
        border: none;
        background: transparent;
        color: var(--primary);
        font-size: .9rem;
    }

        .sortable-unit .move-arrows button:hover {
            color: var(--primary-dark);
        }

.badge-seq {
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.footer-actions {
    position: sticky;
    bottom: 0;
    background: rgba(255,255,255,0.9);
    padding: 14px;
    border-top: 1px solid #e2eef1;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.toast-container-custom {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

.toast-glass {
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(24,170,204,0.25);
    border-radius: 12px;
}

.empty-msg {
    text-align: center;
    color: #9ab;
    padding: 30px 0;
}

#moveOffcanvas {
    min-width: 50%;
}