html, body {
    height: 100%;
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: #F9FBFB;
    color: #24343B;
}

body {
    overflow: hidden;
}

.app-shell {
    height: 100vh;
    display: grid;
    grid-template-rows: 36px 96px 1fr 28px;
}

/* Menu */

.app-menu {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 0 14px;
    background: #173B4D;
    color: white;
    font-size: 14px;
}

    .app-menu span {
        cursor: default;
    }

/* Toolbar */

.app-toolbar {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 8px 16px;
    background: #EEF5F5;
    border-bottom: 1px solid #C7DADC;
}

.tool-item {
    width: 72px;
    text-align: center;
    font-size: 12px;
}

.tool-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 4px auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #505A78;
    color: white;
    border-radius: 4px;
    font-size: 20px;
}

/* Working area */

.app-workspace {
    position: relative;
    background: #F9FBFB;
}

.welcome {
    position: absolute;
    left: 50%;
    top: 45%;
    transform: translate(-50%, -50%);
    text-align: center;
}

    .welcome h1 {
        margin: 0;
        font-size: 28px;
        font-weight: 500;
        letter-spacing: 2px;
        color: #505A78;
    }

    .welcome p {
        margin-top: 8px;
        color: #718087;
    }

/* Status bar */

.app-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10px;
    background: #E5EEEE;
    border-top: 1px solid #C7DADC;
    color: #718087;
    font-size: 12px;
    .working-component

{
    height: 100%;
    box-sizing: border-box;
    padding: 24px;
}

.working-component h2 {
    margin: 0 0 20px 0;
    font-size: 22px;
    font-weight: 500;
    color: #505A78;
}

.component-content {
    height: calc(100% - 55px);
    box-sizing: border-box;
    border: 1px solid #D4DEE1;
    background: white;
    padding: 20px;
}
}