@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

:root {
    --primary-color: #FFB300;
    --primary-light: #FFD54F;
    --primary-dark: #F57C00;
    --secondary-color: #455A64;
    --secondary-light: #607D8B;
    --secondary-dark: #37474F;
    --background-color: #f8f4e1;
    --text-color: #2d3748;
    --border-color: #654321;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --card-background: #ffffff;
    --hover-background: #f5f5f5;
}

body {
    font-family: 'Inter', 'Noto Sans SC', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background-color: var(--card-background);
    padding: 1rem;
    box-shadow: 0 2px 4px var(--shadow-color);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tools-header {
    background: white;
    padding: 1rem 2rem;
    box-shadow: 0 4px 6px var(--shadow-color);
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 100;
    transition: all 0.3s ease;
}

.tools-header h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin: 0;
}

.tools-header a {
    text-decoration: none;
    color: var(--primary-dark);
}

@media (max-width: 768px) {
    .tools-header {
        padding: 0.75rem 1.5rem;
        flex-direction: row;
        text-align: center;
        gap: 1rem;
    }
}

.header h1 {
    margin: 0;
    color: var(--primary-dark);
    font-size: 1.5rem;
}

.header a {
    text-decoration: none;
    color: var(--primary-dark);
}

.main-content {
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: 0 2px 8px var(--shadow-color);
    padding: 2rem;
    margin: 0 auto 2rem;
    max-width: 800px;
}

.btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: var(--primary-dark);
}

.btn-secondary {
    margin: 5px;
    background-color: var(--secondary-color);
}

.btn-secondary:hover {
    background-color: var(--secondary-dark);
}

.input-field {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(255, 179, 0, 0.2);
}

.card {
    background-color: var(--card-background);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--secondary-dark);
    color: white;
    margin-top: 2rem;
}

.footer a {
    color: var(--primary-light);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header {
        flex-direction: column;
        text-align: center;
    }
    
    .main-content {
        padding: 1rem;
        max-width: 85%;
        margin: 0 auto 2rem;
    }
}

.tool-container {
    flex: 1;
    display: flex;
    padding: 20px;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.tool-sidebar {
    width: 250px;
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: 0 2px 8px var(--shadow-color);
    padding: 20px;
}

.tool-content {
    flex: 1;
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: 0 2px 8px var(--shadow-color);
    padding: 20px;
}

.tool-input {
    width: 60%;
    padding: 0.5rem;
    margin-bottom: 1rem;
    display: block;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

.tool-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(255, 179, 0, 0.2);
}

.tool-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 500;
    max-width: 60%;
    word-break: break-word;
}

.tool-button {
    width: 30%;
    padding: 10px;
    margin-bottom: 10px;
    border: none;
    background-color: var(--primary-color);
    .tools-header .btn {
        color: white;
    }
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.tool-button:hover {
    background-color: var(--primary-dark);
}

/* 上传区域样式 */
.upload-area {
    border: 2px dashed var(--border-color);
    padding: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    background-color: var(--card-background);
}

.upload-area:hover {
    background-color: var(--hover-background);
    border-color: var(--primary-color);
}

/* 元数据容器样式 */
.metadata-container {
    margin-top: 2rem;
    display: none;
    background-color: var(--card-background);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.metadata-item {
    margin: 1rem 0;
    padding: 1rem;
    background-color: var(--hover-background);
    border-radius: 4px;
}

.metadata-line {
    margin-bottom: 0.5rem;
}

.copy-btn {
    float: right;
    cursor: pointer;
    color: var(--primary-color);
    transition: color 0.3s ease;
}


.image-preview {
    max-width: 100%;
    max-height: 200px;
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: #f0f0f0;
    border: 1px solid var(--border-color);
}

.tool-alert {
    padding: 10px;
    background-color: #28a745;
    color: white;
    border-radius: 5px;
    display: none;
    margin-top: 10px;
}

.tool-alert.error {
    background-color: #dc3545;
}

.btn-group {
    display: flex;
    gap: 5px;
    margin-top: 10px;
}

.tool-section {
    margin-bottom: 20px;
    padding: 15px;
    background-color: var(--hover-background);
    border-radius: 8px;
}

.tool-textarea {
    width: 95%;
    height: 150px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: #f0f0f0;
    resize: vertical;
    margin-top: 10px;
}

.number-input {
    width: 95%;
    padding: 8px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    background-color: var(--card-background);
}

.explanation-text {
    margin-top: 10px;
    color: var(--secondary-dark);
    font-size: 0.9rem;
}

.result-text {
    margin-top: 15px;
    font-weight: bold;
    color: var(--primary-dark);
}

.tool-container-small {
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    background-color: var(--card-background);
    border-radius: 5px;
    box-shadow: 0 2px 5px var(--shadow-color);
}