/* 加载自定义字体 */
@font-face {
    font-family: 'MiSans Latin';
    src: url('MiSansLatin-Regular.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 10px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    text-align: center;
    color: white;
    padding: 20px 0;
}

header h1 {
    font-size: 28px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.upload-section {
    background: white;
    border-radius: 15px;
    padding: 60px 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.upload-btn {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 40px 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 15px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.upload-btn:active {
    transform: translateY(0);
}

.upload-btn span {
    font-size: 18px;
    font-weight: 500;
}

.editor-section {
    background: white;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.canvas-container {
    position: relative;
    width: 100%;
    max-width: 100%;
    margin-bottom: 20px;
    background: #f0f0f0;
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
}

#canvas {
    display: block;
    max-width: 100%;
    max-height: 70vh;
    cursor: move;
    touch-action: none;
}

.controls {
    padding: 20px;
}

.control-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
    flex: 1;
    min-width: 120px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
    color: white;
}

.btn:not(.btn-primary):not(.btn-success):not(.btn-danger) {
    background: #e0e0e0;
    color: #333;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn:active {
    transform: translateY(0);
}

.btn.active {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.text-controls {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.text-controls h3 {
    margin-bottom: 15px;
    color: #333;
}

.control-item {
    margin-bottom: 15px;
}

.control-item label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: 500;
}

.control-item input[type="text"],
.control-item select {
    width: 100%;
    padding: 10px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.2s;
}

.control-item input[type="text"]:focus,
.control-item select:focus {
    outline: none;
    border-color: #667eea;
}

.control-item input[type="range"] {
    width: 100%;
    height: 6px;
    background: #ddd;
    border-radius: 3px;
    outline: none;
    flex: 1;
}

.input-with-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-adjust {
    width: 36px;
    height: 36px;
    border: 2px solid #667eea;
    background: white;
    color: #667eea;
    border-radius: 6px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.btn-adjust:hover {
    background: #667eea;
    color: white;
}

.btn-adjust:active {
    transform: scale(0.95);
}

.control-item input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: #667eea;
    border-radius: 50%;
    cursor: pointer;
}

.control-item input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: #667eea;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.control-item input[type="color"] {
    width: 100%;
    height: 50px;
    border: 2px solid #ddd;
    border-radius: 6px;
    cursor: pointer;
}

.control-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 8px;
    cursor: pointer;
}

.instructions {
    background: white;
    border-radius: 15px;
    padding: 20px;
    margin-top: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.instructions h3 {
    color: #667eea;
    margin-bottom: 15px;
}

.instructions ul {
    list-style-position: inside;
    color: #555;
    line-height: 1.8;
}

.instructions li {
    margin-bottom: 8px;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 24px;
    }

    .upload-btn {
        padding: 30px 40px;
    }

    .upload-btn span {
        font-size: 16px;
    }

    .canvas-container {
        min-height: 200px;
    }

    #canvas {
        max-height: 50vh;
    }

    .controls {
        padding: 10px;
    }

    .btn {
        padding: 10px 16px;
        font-size: 14px;
        min-width: 100px;
    }

    .control-group {
        gap: 8px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 5px;
    }

    header h1 {
        font-size: 20px;
        padding: 15px 0;
    }

    .upload-section {
        padding: 40px 15px;
    }

    .upload-btn {
        padding: 25px 30px;
    }

    .editor-section,
    .instructions {
        padding: 15px;
    }

    .text-controls {
        padding: 15px;
    }

    .btn {
        min-width: auto;
        flex: 1 1 calc(50% - 4px);
    }
}