body {
    background: radial-gradient(circle at top right, #f2f6ff, #eef3fb 45%, #f8fafc);
    font-size: 0.95rem;
}
.app-container {
    max-width: 1480px;
}
.app-title {
    font-size: clamp(1.25rem, 1.6vw, 1.8rem);
    font-weight: 700;
    letter-spacing: 0.01em;
}
.optimizer-layout {
    display: grid;
    grid-template-columns: minmax(240px, 290px) minmax(380px, 1fr) minmax(380px, 1fr);
    gap: 1rem;
    align-items: start;
}
.layout-panel {
    background: #ffffff;
    border: 1px solid #dfe7f3;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(42, 59, 92, 0.08);
    padding: 0.8rem;
}
.mobile-collapsible {
    border: 0;
}
.mobile-collapsible-summary {
    display: none;
}
.mobile-collapsible-body {
    padding-top: 0;
}
#app-root {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    padding: 1rem 0.5rem;
}
.card-img {
    width: 48px;
    height: 64px;
    object-fit: contain;
    margin-right: 4px;
}
.compose-row {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    gap: 0.5rem;
}
.outcome-rank {
    width: 40px;
    text-align: center;
    font-size: 0.95em;
    padding: 0.1em 0.2em;
}
h1, h4 {
    font-size: 1.1em;
    margin-bottom: 0.7em;
}
.form-control-sm {
    padding: 0.1em 0.3em;
    font-size: 0.95em;
    height: 1.7em;
    width: auto !important;
}
.compose-row .form-control-sm {
    width: 74px !important;
}
.mb-4 {
    margin-bottom: 1rem !important;
}
.mb-3 {
    margin-bottom: 0.7rem !important;
}
.progress {
    height: 0.8rem;
}
ul {
    margin-bottom: 0.5rem;
}
.recipe-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 4px 6px;
    margin-bottom: 4px;
    border-radius: 6px;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
}
.recipe-row:hover {
    background: #e9ecef;
}
.recipe-row-stacked {
    flex-direction: column;
    align-items: stretch;
}
.recipe-row-main {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
}
.recipe-meta {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    width: 100%;
    font-size: 0.82rem;
    color: #495057;
}
.recipe-score {
    font-weight: 600;
}
.recipe-summary {
    color: #6c757d;
}
.recipe-cards {
    display: flex;
    align-items: center;
    gap: 2px;
    white-space: nowrap;
}
.recipe-card-icon {
    width: 36px;
    height: 48px;
    object-fit: contain;
}
.recipe-arrow {
    font-size: 1.2em;
    font-weight: bold;
    color: #666;
}
.recipe-outcome {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
    white-space: nowrap;
}
.recipe-box-icon {
    width: 48px;
    height: 48px;
    object-fit: contain;
}
.recipe-value {
    margin-left: auto;
}
.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}
.gap-2 {
    gap: 0.5rem !important;
}
.reward-preset-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.reward-preset-active {
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
}
.reward-weight-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}
.reward-enable-input {
    margin: 0;
    flex: 0 0 auto;
}
.reward-weight-label {
    flex: 1 1 auto;
    font-size: 0.84rem;
    line-height: 1.2;
    display: flex;
    flex-direction: column;
    gap: 0.12rem;
}
.reward-weight-note {
    color: #6c757d;
    font-size: 0.72rem;
    font-weight: 400;
}
.reward-weight-input {
    width: 90px !important;
}
.reward-weight-row-disabled {
    opacity: 0.55;
}
.reward-reference {
    border-top: 1px solid #dee2e6;
    padding-top: 0.75rem;
}
.reward-reference-item {
    padding: 0.45rem 0;
    border-bottom: 1px solid #eef1f4;
}
.reward-reference-title {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.75rem;
    align-items: center;
    margin-bottom: 0.3rem;
    font-size: 0.84rem;
}
.reward-chip-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}
.reward-chip {
    display: inline-block;
    padding: 0.15rem 0.45rem;
    border-radius: 999px;
    background: #eef3ff;
    color: #1f3c88;
    font-size: 0.78rem;
}
.reward-chip-total {
    background: #e8f7ed;
    color: #166534;
}
.result-list {
    padding-left: 1rem;
}
.result-item {
    margin-bottom: 0.6rem;
}
.result-summary {
    font-size: 0.82rem;
    color: #495057;
}

@media (max-width: 1100px) {
    .optimizer-layout {
        grid-template-columns: minmax(240px, 300px) minmax(420px, 1fr);
    }

    #result-col {
        grid-column: 1 / -1;
    }
}

@media (max-width: 860px) {
    .app-container {
        padding-left: 0.55rem;
        padding-right: 0.55rem;
    }

    .optimizer-layout {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }

    .layout-panel {
        border-radius: 10px;
        padding: 0.4rem;
    }

    .mobile-collapsible {
        border: 1px solid #dfe7f3;
        border-radius: 10px;
        background: #ffffff;
        box-shadow: 0 6px 16px rgba(42, 59, 92, 0.06);
        padding: 0.45rem 0.55rem;
    }

    .mobile-collapsible + .mobile-collapsible {
        margin-top: 0.6rem;
    }

    .mobile-collapsible-summary {
        display: block;
        list-style: none;
        cursor: pointer;
        font-size: 0.94rem;
        font-weight: 700;
        color: #1f2f4f;
        padding: 0.2rem 0;
    }

    .mobile-collapsible-summary::-webkit-details-marker {
        display: none;
    }

    .mobile-collapsible-summary::after {
        content: '▾';
        float: right;
        color: #4f628a;
        transform: translateY(-1px);
    }

    .mobile-collapsible:not([open]) .mobile-collapsible-summary::after {
        content: '▸';
    }

    .mobile-collapsible-body {
        margin-top: 0.45rem;
    }

    .recipe-row-main {
        flex-wrap: wrap;
        row-gap: 0.4rem;
    }

    .recipe-value {
        margin-left: 0;
    }

    .reward-weight-row {
        align-items: flex-start;
    }

    .reward-weight-input {
        width: 84px !important;
    }

    .optimize-action-btn {
        position: sticky;
        bottom: 10px;
        z-index: 25;
        box-shadow: 0 10px 20px rgba(13, 110, 253, 0.35);
    }
}