.dashboard {
    display: grid;
    grid-template-columns: 260px 1fr 380px;
    height: 100vh;
    gap: 20px;
    padding: 20px;
}

.glass {
    backdrop-filter: blur(8px);
    border-radius: 16px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.sidebar {
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.nav-item {
    padding: 12px 16px;
    margin-bottom: 10px;
    border-radius: 12px;
    background: rgba(255,255,255,0.4);
    border: none;
    cursor: pointer;
    font-weight: 600;
}

.main {
    padding: 20px;
    position: relative;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.staircase-grid {
    margin-top: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.fab {
    position: absolute;
    bottom: 30px;
    right: 30px;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: #6366f1;
    color: white;
    font-size: 32px;
    border: none;
    cursor: pointer;
}

.preview {
    padding: 20px;
}