.app-header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-menu {
    position: relative;
}

.app-menu summary {
    list-style: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #ffffff;
    color: var(--primary);
    font-weight: 800;
    padding: 8px 14px;
    cursor: pointer;
    user-select: none;
}

.app-menu summary::-webkit-details-marker {
    display: none;
}

.app-menu summary::after {
    content: "▾";
    font-size: 12px;
    color: var(--muted);
}

.app-menu[open] summary {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(31, 95, 91, 0.10);
}

.app-menu-list {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    z-index: 50;
    display: grid;
    min-width: 220px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #ffffff;
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.16);
}

.app-menu-list a {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
}

.app-menu-list a:hover,
.app-menu-list a.active {
    background: #e8f3f2;
    color: var(--primary);
}

.analysis-mode-card {
    display: grid;
    gap: 8px;
    margin-bottom: 18px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #f8fafc;
}

.analysis-mode-card > span {
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
}

.analysis-mode-switch {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.analysis-mode-button {
    width: 100%;
    margin: 0;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #ffffff;
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
}

.analysis-mode-button.active {
    border-color: var(--primary);
    background: var(--primary);
    color: #ffffff;
}

.analysis-mode-button:disabled {
    cursor: not-allowed;
    opacity: 1;
    color: var(--muted);
    background: #eef2f6;
}

.analysis-mode-button small {
    display: block;
    margin-top: 2px;
    font-size: 11px;
    font-weight: 700;
}

.placeholder-layout {
    padding: 24px 36px 40px;
}

.placeholder-panel {
    max-width: 880px;
    margin: 0 auto;
}

.placeholder-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(180px, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.placeholder-card {
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #ffffff;
}

.placeholder-card strong {
    display: block;
    margin-bottom: 6px;
}

.placeholder-card span {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.4;
}

@media (max-width: 640px) {
    .app-header-actions {
        width: 100%;
        justify-content: space-between;
    }

    .app-menu-list {
        left: 0;
        right: auto;
    }

    .analysis-mode-switch,
    .placeholder-grid {
        grid-template-columns: 1fr;
    }

    .placeholder-layout {
        padding: 16px;
    }
}