/* =========================================================
   計算ツール共通設定
   使用ページ：
   - 減速比計算 ratio-calc
   - 歯直角転位はすばの減速 helical-calc
   - 単位変換、出力計算 unit-calc
   - 転位歯車の減速 shifted-calc
   - 標準平歯車の減速 spur-calc
========================================================= */
#main .ratio-calc div::after,
#main .helical-calc div::after
#main .unit-calc div::after
#main .shifted-calc div::after
#main .spur-calc div::after{
    content: ".";
    display: block;
    clear: both;
    height: 0;
    visibility: hidden;
    display: none;
}

#content #main .ratio-calc h3,
#content #main .helical-calc h3,
#content #main .unit-calc h3,
#content #main .shifted-calc h3,
#content #main .spur-calc h3{
    border-top: none;
    margin-bottom: 0;
}

:is(.ratio-calc, .helical-calc, .unit-calc, .shifted-calc, .spur-calc) .container {
    max-width: var(--tool-container-width);
    margin: auto;
}

:is(.helical-calc, .unit-calc, .shifted-calc, .spur-calc) .container {
    background: #fff;
    padding: var(--tool-container-padding);
    border-radius: var(--tool-container-radius);
    box-shadow: var(--tool-container-shadow);
}

:is(.helical-calc, .unit-calc, .shifted-calc, .spur-calc) .buttons {
    text-align: center;
    margin-bottom: var(--tool-buttons-margin-bottom);
}

:is(.helical-calc, .unit-calc, .shifted-calc, .spur-calc) button {
    padding: 12px 24px;
    margin: 5px;
    border: none;
    border-radius: var(--tool-button-radius);
    background: var(--tool-button-bg);
    color: #fff;
    font-size: 16px;
    cursor: pointer;
}

:is(.helical-calc, .unit-calc, .shifted-calc, .spur-calc) button:hover {
    background: var(--tool-button-hover-bg);
}

:is(.helical-calc, .unit-calc, .shifted-calc, .spur-calc) table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--tool-table-margin-top);
}

:is(.helical-calc, .shifted-calc, .spur-calc) table {
    table-layout: fixed;
}

:is(.helical-calc, .unit-calc, .shifted-calc, .spur-calc) th,
:is(.helical-calc, .unit-calc, .shifted-calc, .spur-calc) td {
    border: 1px solid #ccc;
    padding: var(--tool-table-cell-padding);
}

:is(.helical-calc, .shifted-calc, .spur-calc) th,
:is(.helical-calc, .shifted-calc, .spur-calc) td {
    text-align: center;
    word-break: break-word;
}

:is(.helical-calc, .unit-calc, .shifted-calc, .spur-calc) th {
    background: var(--tool-table-heading-bg);
}

:is(.helical-calc, .unit-calc, .shifted-calc, .spur-calc) input,
:is(.helical-calc, .unit-calc) select {
    width: 100%;
    padding: var(--tool-input-padding);
    text-align: center;
    font-size: var(--tool-input-font-size);
    box-sizing: border-box;
}


/* =========================================================
   減速比計算
   使用ページ：ratio-calc
========================================================= */

.ratio-calc {
    --tool-container-width: 1400px;
}

.ratio-calc h1 {
    text-align: center;
    margin-bottom: 30px;
}

.ratio-calc .grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.ratio-calc .card {
    background: #fff;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.ratio-calc h2 {
    margin-top: 0;
}

.ratio-calc .table-wrap {
    margin-top: 0.5em;
    overflow-x: auto;
}

.ratio-calc .table {
    width: 100%;
    border-collapse: collapse;
}

.ratio-calc .table th,
.ratio-calc .table td {
    border: 1px solid #ccc;
    padding: 8px;
    text-align: center;
}

.ratio-calc .table th {
    background: #dce8f5;
}

.ratio-calc input {
    width: 90px;
    padding: 6px;
    border: 1px solid #aaa;
    border-radius: 6px;
    text-align: center;
}

.ratio-calc .result {
    margin-top: 15px;
    padding: 15px;
    border-radius: 12px;
    background: #eef7ff;
}

.ratio-calc .result strong {
    font-size: 22px;
}

.ratio-calc .top-buttons {
    text-align: center;
    margin-bottom: 20px;
}

.ratio-calc .top-buttons button {
    padding: 14px 24px;
    margin: 5px;
    border: none;
    border-radius: 12px;
    background: #2b6fff;
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.ratio-calc .top-buttons button:hover {
    background: #1f56d6;
}

@media (max-width: 1000px) {
    .ratio-calc .grid {
        grid-template-columns: 1fr;
    }
}


/* =========================================================
   歯直角転位はすばの減速
   使用ページ：helical-calc
========================================================= */

.helical-calc {
    --tool-container-width: 1100px;
    --tool-container-padding: 20px;
    --tool-container-radius: 12px;
    --tool-container-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);

    --tool-buttons-margin-bottom: 20px;
    --tool-button-radius: 8px;
    --tool-button-bg: #005bbb;
    --tool-button-hover-bg: #004999;

    --tool-table-margin-top: 15px;
    --tool-table-cell-padding: 10px;
    --tool-table-heading-bg: #dcecff;

    --tool-input-padding: 6px;
    --tool-input-font-size: 14px;
}


/* =========================================================
   単位変換、出力計算
   使用ページ：unit-calc
========================================================= */

.unit-calc {
    --tool-container-width: 900px;
    --tool-container-padding: 30px;
    --tool-container-radius: 20px;
    --tool-container-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);

    --tool-buttons-margin-bottom: 25px;
    --tool-button-radius: 10px;
    --tool-button-bg: #005bbb;
    --tool-button-hover-bg: #004999;

    --tool-table-margin-top: 20px;
    --tool-table-cell-padding: 12px;
    --tool-table-heading-bg: #dce8f5;

    --tool-input-padding: 12px;
    --tool-input-font-size: 16px;
}

.unit-calc .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.unit-calc label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.unit-calc input,
.unit-calc select {
    border: 1px solid #ccc;
    border-radius: 10px;
}

.unit-calc th,
.unit-calc td {
    text-align: right;
}

.unit-calc th:first-child,
.unit-calc td:first-child {
    text-align: left;
}

.unit-calc .result-box {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.unit-calc .card {
    padding: 20px;
    border-radius: 15px;
    background: #eef5ff;
}

.unit-calc .card.green {
    background: #eefdf1;
}

.unit-calc .value {
    margin-top: 10px;
    font-size: 28px;
    font-weight: bold;
}

.unit-calc .formula {
    margin-top: 10px;
    color: #666;
    font-size: 14px;
}


/* =========================================================
   転位歯車の減速
   使用ページ：shifted-calc
========================================================= */

.shifted-calc {
    --tool-container-width: 1100px;
    --tool-container-padding: 20px;
    --tool-container-radius: 12px;
    --tool-container-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);

    --tool-buttons-margin-bottom: 20px;
    --tool-button-radius: 8px;
    --tool-button-bg: #005bbb;
    --tool-button-hover-bg: #004999;

    --tool-table-margin-top: 15px;
    --tool-table-cell-padding: 10px;
    --tool-table-heading-bg: #dcecff;

    --tool-input-padding: 6px;
    --tool-input-font-size: 14px;
}


/* =========================================================
   標準平歯車の減速
   使用ページ：spur-calc
========================================================= */

.spur-calc {
    --tool-container-width: 1100px;
    --tool-container-padding: 20px;
    --tool-container-radius: 12px;
    --tool-container-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);

    --tool-buttons-margin-bottom: 20px;
    --tool-button-radius: 8px;
    --tool-button-bg: #005bbb;
    --tool-button-hover-bg: #004999;

    --tool-table-margin-top: 15px;
    --tool-table-cell-padding: 10px;
    --tool-table-heading-bg: #dcecff;

    --tool-input-padding: 6px;
    --tool-input-font-size: 14px;
}

.spur-calc h1 {
    margin-bottom: 20px;
    color: #003366;
    text-align: center;
}