:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-panel: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --accent-color: #2196F3;
    --chart-bg: #ffffff;
    --grid-color: #e0e0e0;
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-panel: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --accent-color: #64B5F6;
    --chart-bg: #2d2d2d;
    --grid-color: #404040;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: var(--bg-panel);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border-color);
}

h1 {
    font-size: 2rem;
    color: var(--text-primary);
    font-weight: 600;
}

.controls {
    display: flex;
    gap: 15px;
    align-items: center;
}

.btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.select {
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
}

main {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.chart-container {
    background-color: var(--bg-panel);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
    min-height: 500px;
    position: relative;
}

.chart-panel {
    display: none;
    width: 100%;
    height: 450px;
}

.chart-panel.active {
    display: block;
}

canvas {
    max-width: 100%;
    height: 100%;
}

.data-panel {
    background-color: var(--bg-panel);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
    height: fit-content;
}

.data-panel h3 {
    margin-bottom: 20px;
    color: var(--text-primary);
    font-size: 1.2rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 10px;
}

.data-editor {
    display: none;
}

.data-editor.active {
    display: block;
}

.data-editor h4 {
    margin-bottom: 15px;
    color: var(--text-secondary);
    font-size: 1rem;
}

.data-table {
    margin-bottom: 20px;
    max-height: 300px;
    overflow-y: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-secondary);
    border-radius: 6px;
    overflow: hidden;
}

th, td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--accent-color);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
}

td {
    background-color: var(--bg-primary);
}

td input {
    width: 100%;
    padding: 5px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.parameter-controls,
.axes-controls,
.spine-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.parameter-controls label,
.axes-controls label,
.spine-controls label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
}

input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    border: none;
}

input[type="number"],
input[type="color"] {
    padding: 5px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

input[type="color"] {
    width: 50px;
    height: 30px;
    padding: 2px;
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
    }
    
    header {
        flex-direction: column;
        gap: 15px;
    }
    
    .controls {
        flex-direction: column;
        width: 100%;
    }
    
    .select {
        width: 100%;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

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

.chart-panel.active {
    animation: fadeIn 0.3s ease;
}

.data-editor.active {
    animation: fadeIn 0.3s ease;
}