/* 图表工具样式 */
.charts-section {
    min-height: 100vh;
    padding: 120px 0 80px;
    background: var(--dark-bg);
}

.charts-container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0,0,0,.1);
    backdrop-filter: blur(10px);
}

.charts-container h2 {
    text-align: center;
    margin-bottom: .5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 2.5rem;
    font-weight: 700;
}

.charts-subtitle {
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 2.5rem;
    font-size: 1.2rem;
}

/* 图表类型选择 */
.chart-types {
    display: flex;
    gap: .5rem;
    margin-bottom: 2rem;
    background: var(--dark-bg);
    border-radius: 12px;
    padding: .5rem;
    flex-wrap: wrap;
}

.type-btn {
    flex: 1;
    min-width: 120px;
    padding: 1rem;
    border: none;
    background: transparent;
    color: var(--text-gray);
    cursor: pointer;
    transition: all .3s ease;
    border-radius: 8px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    font-size: .9rem;
}

.type-btn:hover {
    color: var(--accent-color);
}

.type-btn.active {
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 4px 15px rgba(0,198,255,.3);
}

/* 工作区 */
.chart-workspace {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
    min-height: 600px;
}

.data-panel,
.chart-panel {
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, rgba(0,198,255,.1), rgba(0,198,255,.05));
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    margin: 0;
    color: var(--text-light);
    font-size: 1.1rem;
    font-weight: 600;
}

.panel-actions {
    display: flex;
    gap: .5rem;
}

.icon-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-gray);
    cursor: pointer;
    border-radius: 6px;
    transition: all .3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: var(--accent-color);
    color: white;
}

.chart-controls {
    display: flex;
    gap: .5rem;
}

.control-btn {
    padding: .5rem 1rem;
    border: 1px solid var(--accent-color);
    background: transparent;
    color: var(--accent-color);
    cursor: pointer;
    border-radius: 6px;
    transition: all .3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .85rem;
}

.control-btn:hover {
    background: var(--accent-color);
    color: white;
}

/* 数据输入区域 */
.data-input-area {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: .8rem;
    color: var(--text-gray);
    font-weight: 500;
    font-size: 1rem;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: .8rem;
    border: 2px solid var(--border-color);
    background: var(--dark-bg);
    color: var(--text-light);
    border-radius: 8px;
    outline: none;
    transition: all .3s ease;
}

.input-group input:focus,
.input-group select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0,198,255,.2);
}

/* 数据输入标签页 */
.data-input-tabs {
    display: flex;
    gap: .5rem;
    margin-bottom: 1rem;
    background: rgba(0,0,0,.2);
    border-radius: 8px;
    padding: .2rem;
}

.data-tab {
    flex: 1;
    padding: .6rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-gray);
    cursor: pointer;
    transition: all .3s ease;
    border-radius: 6px;
    font-weight: 500;
    font-size: .85rem;
    text-align: center;
}

.data-tab:hover {
    color: var(--accent-color);
}

.data-tab.active {
    background: var(--accent-color);
    color: white;
}

.data-input-content {
    position: relative;
}

.data-input-panel {
    display: none;
    animation: fadeIn .3s ease;
}

.data-input-panel.active {
    display: block;
}

/* 系列管理 */
.series-management {
    margin-bottom: 1.5rem;
}

.series-control-item {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.series-control-item input {
    flex: 1;
    padding: .4rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--dark-bg);
    color: var(--text-light);
}

/* 数据表格 */
.data-table-container {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 1rem;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(0,0,0,.2);
    border-radius: 8px;
    overflow: hidden;
}

.data-table th,
.data-table td {
    padding: .8rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: rgba(0,0,0,.3);
    color: var(--text-light);
    font-weight: 600;
    font-size: .9rem;
}

.data-table input {
    width: 100%;
    padding: .5rem;
    border: 1px solid var(--border-color);
    background: var(--dark-bg);
    color: var(--text-light);
    border-radius: 4px;
    outline: none;
    transition: all .3s ease;
}

.data-table input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(0,198,255,.2);
}

.delete-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: #dc3545;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    transition: all .3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.delete-btn:hover {
    background: #c82333;
    transform: scale(1.1);
}

.add-row-btn {
    padding: .8rem 1.5rem;
    border: 2px solid var(--accent-color);
    background: transparent;
    color: var(--accent-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all .3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: .5rem;
    margin: 0 auto;
}

.add-row-btn:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-2px);
}

/* CSV/JSON/公式输入 */
.data-input-panel textarea {
    width: 100%;
    height: 200px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    background: var(--dark-bg);
    color: var(--text-light);
    border-radius: 8px;
    outline: none;
    transition: all .3s ease;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: .9rem;
    resize: vertical;
}

.data-input-panel textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0,198,255,.2);
}

#formula-data {
    height: 120px !important;
}

.parse-btn {
    margin-top: 1rem;
    padding: .8rem 1.5rem;
    background: var(--gradient-accent);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all .3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: .5rem;
}

.parse-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,198,255,.3);
}

#formula-target-series {
    padding: .5rem;
    border: 2px solid var(--border-color);
    background: var(--dark-bg);
    color: var(--text-light);
    border-radius: 6px;
    margin-bottom: 1rem;
}

/* 图表容器 */
.chart-container {
    flex: 1;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-display {
    width: 100%;
    height: 400px;
    background: rgba(255,255,255,.02);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

/* 图表设置 */
.chart-settings {
    background: linear-gradient(135deg, rgba(0,198,255,.05), rgba(0,198,255,.02));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.chart-settings h3 {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 1.3rem;
    font-weight: 600;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: .8rem;
}

.setting-item label {
    color: var(--text-gray);
    font-weight: 500;
    font-size: 1rem;
}

.setting-item select,
.setting-item input[type="range"] {
    padding: .8rem;
    border: 2px solid var(--border-color);
    background: var(--dark-bg);
    color: var(--text-light);
    border-radius: 8px;
    outline: none;
    transition: all .3s ease;
}

.setting-item select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0,198,255,.2);
}

.setting-item input[type="checkbox"] {
    width: auto;
    accent-color: var(--accent-color);
}

.setting-item input[type="range"] {
    -webkit-appearance: none;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
}

.setting-item input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,.2);
}

#duration-value {
    text-align: center;
    color: var(--accent-color);
    font-weight: 600;
    min-width: 50px;
}

/* 使用说明 */
.chart-info {
    background: linear-gradient(135deg, rgba(0,198,255,.05), rgba(0,198,255,.02));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.chart-info h3 {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 1.3rem;
    font-weight: 600;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(0,0,0,.2);
    border-radius: 8px;
}

.info-item i {
    color: var(--accent-color);
    font-size: 1.5rem;
    margin-top: .2rem;
}

.info-item h4 {
    color: var(--text-light);
    margin-bottom: .5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.info-item p {
    color: var(--text-gray);
    line-height: 1.5;
    margin: 0;
}

/* 返回链接 */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    margin-top: 2rem;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: all .3s ease;
}

.back-link:hover {
    gap: .8rem;
    color: #00a8e8;
}

/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 公式输入样式 */
.formula-range {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin: 1rem 0;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    flex-wrap: wrap;
}

.formula-range label {
    color: var(--text-gray);
    font-weight: 500;
    min-width: 80px;
}

.formula-range input[type="number"] {
    flex: 1;
    min-width: 80px;
    padding: .8rem;
    border: 2px solid var(--border-color);
    background: var(--dark-bg);
    color: var(--text-light);
    border-radius: 8px;
    outline: none;
    transition: all .3s ease;
}

.formula-range input[type="number"]:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 198, 255, .2);
}

.formula-range input::placeholder {
    color: var(--text-gray);
    opacity: .7;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .charts-container {
        padding: 2rem;
        margin: 0 1rem;
    }

    .chart-workspace {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        min-height: 400px;
    }

    .chart-types {
        flex-direction: column;
        gap: .5rem;
    }

    .type-btn {
        min-width: auto;
        padding: .8rem;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .data-input-tabs {
        flex-direction: column;
        gap: .2rem;
    }

    .data-tab {
        padding: .8rem;
    }

    .formula-range {
        flex-direction: column;
        align-items: stretch;
        gap: .8rem;
    }

    .formula-range label {
        min-width: auto;
    }

    .formula-range input[type="number"] {
        width: 100%;
    }
}

/* 隐藏所有number输入框的上下箭头 */
input[type="number"] {
    -moz-appearance: textfield; /* Firefox */
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none; /* Chrome, Safari, Edge */
    margin: 0;
}

/* 针对Firefox的特殊处理 */
input[type="number"] {
    -webkit-appearance: textfield;
    -moz-appearance: textfield;
    appearance: textfield;
}