/* 主样式文件 - Material Design 风格 */

:root {
    --primary-color: #1976d2;
    --primary-dark: #1565c0;
    --primary-light: #42a5f5;
    --secondary-color: #424242;
    --success-color: #4caf50;
    --danger-color: #f44336;
    --warning-color: #ff9800;
    --disabled-color: #9e9e9e;
    --background: #f5f5f5;
    --surface: #ffffff;
    --text-primary: #212121;
    --text-secondary: #757575;
    --divider: #e0e0e0;
    --shadow-1: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-2: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-3: 0 8px 16px rgba(0,0,0,0.2);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Roboto', 'Microsoft YaHei', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* 加载动画 */
.loader-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--surface);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loader {
    width: 60px;
    height: 60px;
    border: 4px solid var(--divider);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loader-container p {
    margin-top: 20px;
    color: var(--text-secondary);
    font-size: 16px;
}

/* 主容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px;
    animation: fadeIn 0.5s ease-in;
}

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

/* 头部 */
.header {
    background: var(--surface);
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow-1);
}

.title {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 32px;
    font-weight: 500;
    color: var(--text-primary);
}

.title .material-icons {
    font-size: 40px;
    color: var(--primary-color);
}

/* 工具栏 */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    background: var(--surface);
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow-1);
}

/* 搜索框 */
.search-box {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--background);
    padding: 12px 20px;
    border-radius: 50px;
    flex: 1;
    max-width: 500px;
    transition: var(--transition);
}

.search-box:focus-within {
    background: #fff;
    box-shadow: var(--shadow-2);
}

.search-box .material-icons {
    color: var(--text-secondary);
    font-size: 24px;
}

.search-box input {
    border: none;
    outline: none;
    background: transparent;
    flex: 1;
    font-size: 16px;
    color: var(--text-primary);
}

.search-box input::placeholder {
    color: var(--text-secondary);
}

/* 工具栏按钮 */
.toolbar-actions {
    display: flex;
    gap: 12px;
}

.btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-1);
}

.btn .material-icons {
    font-size: 20px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-2);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--divider);
}

.btn-secondary:hover {
    background: var(--background);
    box-shadow: var(--shadow-2);
}

/* 排序选项 */
.sort-options {
    display: flex;
    gap: 10px;
    background: var(--surface);
    padding: 15px 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow-1);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.sort-option {
    padding: 8px 16px;
    border: 1px solid var(--divider);
    background: var(--surface);
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
}

.sort-option:hover {
    background: var(--primary-light);
    color: white;
    border-color: var(--primary-light);
}

.sort-option.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 消息提示框 */
.message-box {
    position: fixed;
    top: 20px;
    right: 20px;
    max-width: 400px;
    padding: 16px 24px;
    background: var(--surface);
    border-radius: 4px;
    box-shadow: var(--shadow-3);
    z-index: 10000;
    display: none;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from { transform: translateX(400px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.message-box.show {
    display: block;
}

.message-box.error {
    background: var(--danger-color);
    color: white;
}

.message-box.success {
    background: var(--success-color);
    color: white;
}

.message-box.warning {
    background: var(--warning-color);
    color: white;
}

/* 响应式 - 虽然不需要，但保留基本样式 */
@media (max-width: 768px) {
    .toolbar {
        flex-direction: column;
    }
    
    .search-box {
        max-width: 100%;
    }
}