:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --border-color: #e2e8f0;
    --cheapest-bg: #fefce8;
}

.simulator-container {
    width: 100%;
    background: var(--card-bg);
    padding: 20px;
    box-sizing: border-box;
    color: var(--text-color);
}

.simulator-container .step-container {
    margin-bottom: 16px;
}
.simulator-container .step-title {
    font-size: 15px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.simulator-container .step-badge {
    background: var(--primary-color);
    color: #fff;
    font-size: 13px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: bold;
}

.simulator-container .step-box {
    background: #f1f5f9;
    padding: 14px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.simulator-container .accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    font-size: 13px;
    font-weight: 600;
    color: #475569;
}
.simulator-container .accordion-left {
    display: flex;
    align-items: center;
    gap: 8px;
}
.simulator-container .accordion-arrow {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 11px;
    color: #64748b;
}
.simulator-container .accordion-header.open .accordion-arrow {
    transform: rotate(90deg);
}

.simulator-container .accordion-content {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease, padding 0.3s ease;
    margin-top: 0;
    border-top: 0px dashed transparent;
    padding-top: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.simulator-container .accordion-content.open {
    max-height: 600px;
    opacity: 1;
    margin-top: 10px;
    border-top: 1px dashed var(--border-color);
    padding-top: 10px;
}

.simulator-container .filter-category {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.simulator-container .filter-category-title {
    font-size: 13px;
    font-weight: bold;
    color: #64748b;
}

.simulator-container .quick-calc-section {
    margin-bottom: 12px;
}
.simulator-container .quick-calc-label {
    font-size: 13px;
    font-weight: 600;
    color: #475569;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 4px;
}
.simulator-container .quick-buttons {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.simulator-container .quick-btn {
    background: #fff;
    border: 1px solid var(--border-color);
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    color: #334155;
    font-weight: 500;
    transition: all 0.2s;
}
.simulator-container .quick-btn:hover {
    background: #e2e8f0;
    color: #1e293b;
}

.simulator-container .inputs-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 10px;
}

.simulator-container .input-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.simulator-container .input-card label {
    font-size: 13px;
    font-weight: 600;
    color: #475569;
    margin-bottom: 6px;
    display: block;
}

.simulator-container .input-unit-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.simulator-container .input-card input[type="number"] {
    width: 100%;
    max-width: 65px;
    padding: 5px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 15px;
    text-align: right;
    background: #fff;
}

.simulator-container .input-unit {
    font-size: 13px;
    font-weight: 600;
    color: #475569;
    white-space: nowrap;
}

.simulator-container .sub-estimate {
    font-size: 13px;
    color: #64748b;
    margin-top: 4px;
}

.simulator-container .options-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 500;
    color: #334155;
    cursor: pointer;
    width: fit-content;
    margin-top: 6px;
    user-select: none;
}
.simulator-container .options-row input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid #cbd5e1;
    border-radius: 50%;
    outline: none;
    cursor: pointer;
    display: grid;
    place-content: center;
    transition: all 0.2s;
    background-color: #fff;
}
.simulator-container .options-row input[type="checkbox"]::before {
    content: "";
    width: 10px;
    height: 10px;
    border-radius: 50%;
    transform: scale(0);
    transition: 120ms transform ease-in-out;
    background-color: var(--primary-color);
}
.simulator-container .options-row input[type="checkbox"]:checked {
    border-color: var(--primary-color);
}
.simulator-container .options-row input[type="checkbox"]:checked::before {
    transform: scale(1);
}

.simulator-container .filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.simulator-container .filter-tag {
    font-size: 13px;
    background: #fff;
    border: 1px solid var(--border-color);
    padding: 5px 10px;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
    color: #334155;
    font-weight: 500;
}
.simulator-container .filter-tag input { display: none; }
.simulator-container .filter-tag.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.simulator-container .reset-btn {
    background: transparent;
    border: 1px solid #cbd5e1;
    color: #64748b;
    font-size: 13px;
    padding: 3px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}
.simulator-container .reset-btn:hover {
    background: #e2e8f0;
    color: #334155;
}

.simulator-container .table-header-bar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: 8px;
    gap: 4px;
}
.simulator-container .toggle-btn {
    background: #fff;
    border: 1px solid var(--border-color);
    padding: 5px 12px;
    border-radius: 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    color: #475569;
    transition: all 0.2s;
}
.simulator-container .toggle-btn.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.simulator-container .table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}
.simulator-container table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    background: #fff;
    white-space: nowrap;
}
.simulator-container th, 
.simulator-container td {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
}
.simulator-container th:nth-child(1), 
.simulator-container td.service-cell,
.simulator-container th:nth-child(2), 
.simulator-container td.plan-name-cell {
    text-align: left;
}
.simulator-container th {
    text-align: left;
    font-weight: bold;
    color: #475569;
    background: #f1f5f9;
}

.simulator-container .cheapest-row {
    background-color: var(--cheapest-bg) !important;
}
.simulator-container .cheapest-row td {
    font-weight: bold;
    color: #854d0e;
}

.simulator-container .badge {
    background: #e11d48;
    color: #fff;
    padding: 1px 4px;
    font-size: 9px;
    border-radius: 3px;
    margin-left: 4px;
    vertical-align: middle;
}

.simulator-container .detail-col, 
.simulator-container .spec-col { display: none; }
.simulator-container table.show-details .detail-col { display: table-cell; }
.simulator-container table.show-specs .spec-col { display: table-cell; }

.simulator-container .info-btn {
    background: #4ea1d5;
    color: #fff;
    padding: 4px 8px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 11px;
    font-weight: bold;
    transition: background 0.2s;
}
.simulator-container .info-btn:hover { background: #2d6d95; }

.simulator-container .cta-btn {
    background: #16a34a;
    color: #fff;
    padding: 4px 8px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 11px;
    font-weight: bold;
    transition: background 0.2s;
}
.simulator-container .cta-btn:hover { background: #15803d; }

.simulator-container .note {
    font-size: 13px;
    color: #64748b;
    margin-top: 8px;
}

@media screen and (max-width: 638px) {
    .simulator-container .inputs-row {
        grid-template-columns: 1fr;
    }
    .simulator-container .input-card {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        padding: 12px;
    }
    .simulator-container .input-card label {
        margin-bottom: 0;
    }
    .simulator-container .sub-estimate {
        width: 100%;
        text-align: right;
        margin-top: 4px;
    }

    .simulator-container th:nth-child(1), 
    .simulator-container td.service-cell {
        position: sticky;
        left: 0;
        background-color: #f8fafc;
        z-index: 2;
        width: 100px;
        min-width: 100px;
        max-width: 100px;
    }
    .simulator-container td.service-cell { background-color: #fff; }
    .simulator-container .cheapest-row td.service-cell { background-color: var(--cheapest-bg) !important; }
    
    .simulator-container .service-name-text {
        display: inline-block;
        width: 90px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        vertical-align: middle;
    }
}