/* ======= 勾股定理计算器样式 ======= */

.tool-title-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--primary-light);
}

.tool-title-wrapper i {
    font-size: 2rem;
    color: var(--primary-color);
}

.tool-title-wrapper .tool-title {
    margin-bottom: 0;
    border-bottom: none;
}

/* 模式切换 */
.py-mode-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 14px;
}

.py-mode-option {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 11px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    background: var(--bg-white);
    transition: var(--transition-fast);
}

.py-mode-option:hover {
    border-color: var(--primary-color);
}

.py-mode-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.py-mode-option span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.py-mode-option small {
    font-size: 12px;
    color: var(--text-secondary);
    font-family: 'Consolas', 'Monaco', monospace;
}

.py-mode-option:has(input:checked) {
    border-color: var(--primary-color);
    background: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.py-mode-option:has(input:checked) span {
    color: var(--primary-color);
}

/* 输入区 */
.py-input-wrap {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.py-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.py-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.py-input-wrap input.form-input,
.py-check-grid input.form-input {
    font-size: 18px;
    font-weight: 600;
    padding: 12px 14px;
    font-family: 'Consolas', 'Monaco', monospace;
}

.form-select {
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-white);
    color: var(--text-primary);
    font-size: 15px;
    cursor: pointer;
}

.form-select:hover,
.form-select:focus {
    border-color: var(--primary-color);
    outline: none;
}

/* 按模式显隐输入项：默认隐藏 a/b/c 三项，按模式开启所需两项（单位始终显示） */
.py-field-a,
.py-field-b,
.py-field-c {
    display: none;
}

.py-input-wrap.mode-ab .py-field-a,
.py-input-wrap.mode-ab .py-field-b,
.py-input-wrap.mode-ac .py-field-a,
.py-input-wrap.mode-ac .py-field-c,
.py-input-wrap.mode-bc .py-field-b,
.py-input-wrap.mode-bc .py-field-c {
    display: flex;
}

/* 快捷勾股数 */
.py-quick-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin: 14px 0 4px;
}

.py-quick-btn {
    padding: 6px 12px;
    font-size: 13px;
    font-family: 'Consolas', 'Monaco', monospace;
}

/* 错误提示 */
.error-tip {
    min-height: 20px;
    margin: 6px 0 2px;
    color: #e74c3c;
    font-size: 14px;
    text-align: center;
    font-weight: 500;
}

/* 结果 */
.py-result {
    margin-top: 10px;
}

.py-main-card {
    padding: 18px 16px 14px;
    background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-align: center;
}

.py-main-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.py-main-value {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Consolas', 'Monaco', monospace;
    line-height: 1.25;
    word-break: break-all;
}

.py-sides {
    margin-top: 4px;
    font-size: 13px;
    color: var(--text-secondary);
    font-family: 'Consolas', 'Monaco', monospace;
}

.py-flex {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 16px;
    align-items: start;
}

.py-svg-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px;
    background: var(--bg-white);
}

.py-svg {
    width: 100%;
    height: auto;
    display: block;
}

.py-stat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.stat-box {
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    padding: 10px;
    text-align: center;
}

.stat-box .stat-value {
    display: block;
    font-size: 17px;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Consolas', 'Monaco', monospace;
    line-height: 1.25;
    word-break: break-all;
}

.stat-box .stat-label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.py-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

/* 提示 */
.py-tip {
    margin-top: 12px;
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.6;
}

/* 三边判定 */
.py-check-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.py-check-result {
    margin-top: 12px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    background: var(--bg-light);
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.py-check-result.is-right {
    background: rgba(82, 196, 26, 0.12);
    color: #237804;
    font-weight: 600;
}

.py-check-result.is-not {
    background: rgba(250, 173, 20, 0.14);
    color: #ad6800;
    font-weight: 600;
}

/* 速查表 */
.vc-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.vc-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 460px;
}

.vc-table th {
    background: var(--bg-light);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    text-align: left;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.vc-table td {
    padding: 8px 14px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 13px;
}

.vc-table td:first-child {
    font-family: 'Consolas', 'Monaco', monospace;
    font-weight: 600;
}

.vc-table tr:last-child td {
    border-bottom: none;
}

.vc-table tr:nth-child(even) td {
    background: rgba(0, 0, 0, 0.015);
}

/* 响应式 */
@media (max-width: 768px) {
    .py-mode-row {
        grid-template-columns: 1fr;
    }

    .py-input-wrap,
    .py-flex {
        grid-template-columns: 1fr;
    }

    .py-check-grid {
        grid-template-columns: 1fr;
    }

    .py-main-value {
        font-size: 32px;
    }
}