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

body {
    font-family: "ABC Favorit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

/* 登录页面样式 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 10px;
    color: #333;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
}

/* 主容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 28px;
}

.logout-btn {
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border: 2px solid white;
    border-radius: 6px;
    transition: all 0.3s;
}

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

.main-content {
    padding: 30px;
}

section {
    margin-bottom: 40px;
}

h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 20px;
    border-bottom: 2px solid #667eea;
    padding-bottom: 10px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

textarea {
    resize: vertical;
    font-family: inherit;
}

/* 上传区域 */
.upload-area {
    border: 3px dashed #ccc;
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.upload-area:hover,
.upload-area:active {
    border-color: #667eea;
    background: #f8f9ff;
}

.upload-area.dragover {
    border-color: #667eea;
    background: #f0f4ff;
}

.upload-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 10px;
}

.upload-placeholder p {
    margin: 5px 0;
    color: #666;
}

.upload-hint {
    font-size: 12px;
    color: #999;
}

/* 预览框 */
.preview-box {
    margin-top: 20px;
    text-align: center;
}

.preview-box img {
    max-width: 100%;
    max-height: 500px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.filename {
    margin-top: 10px;
    color: #666;
    font-size: 14px;
}

/* 按钮样式 */
button {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

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

.btn-primary:hover:not(:disabled),
.btn-primary:active:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.btn-success {
    background: #10b981;
    color: white;
    margin-right: 10px;
}

.btn-success:hover {
    background: #059669;
}

.btn-secondary {
    background: #6b7280;
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

.action-buttons {
    margin-top: 20px;
    text-align: center;
}

/* 状态消息 */
.status-message {
    margin-top: 15px;
    padding: 12px;
    border-radius: 6px;
    display: none;
}

.status-message.info {
    background: #dbeafe;
    color: #1e40af;
    display: block;
}

.status-message.success {
    background: #d1fae5;
    color: #065f46;
    display: block;
}

.status-message.error {
    background: #fee2e2;
    color: #991b1b;
    display: block;
}

.error-message {
    color: #dc2626;
    margin-top: 10px;
    display: none;
}

/* 响应式 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .main-content {
        padding: 20px;
    }

    header {
        padding: 20px;
        flex-direction: column;
        gap: 15px;
    }

    header h1 {
        font-size: 24px;
    }
}