/* Layout */
.app-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 0;
    overflow: hidden;
}

/* Control Panel */
.control-panel {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-light);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
}

.welcome-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: #8e8e93;
    text-align: center;
    gap: 16px;
}

.welcome-icon {
    width: 64px;
    height: 64px;
    color: #48484a;
}

.welcome-screen h2 {
    font-size: 28px;
    font-weight: 600;
    color: #f2f2f7;
    margin: 0;
}

.welcome-screen p {
    font-size: 16px;
    color: #8e8e93;
    margin: 0;
}

/* Responsive */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }

    .control-panel {
        border-right: none;
        border-bottom: 1px solid var(--border-light);
        padding: 16px;
        max-height: 50vh;
    }
}