/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

/* 通用样式变量 */
:root {
    --primary-color: #4CAF50;
    --primary-hover: #45a049;
    --secondary-color: #2196F3;
    --secondary-hover: #0b7dda;
    --danger-color: #f44336;
    --danger-hover: #d32f2f;
    --warning-color: #FFC107;
    --info-color: #17a2b8;
    --gray-color: #6c757d;
    --light-gray: #f8f9fa;
    --border-color: #ddd;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --box-shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --navbar-bg: linear-gradient(90deg, #2c3e50, #34495e);
    --sidebar-bg: #2c3e50;
    --sidebar-hover: #34495e;
    --dropdown-bg: white;
    --text-primary: #2c3e50;
    --text-secondary: #666;
    --text-light: white;
    --success-color: #4CAF50;
    --success-light: rgba(76, 175, 80, 0.1);
}

/* 登录页面样式 */
.login-container {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

.login-container h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    border-color: #4CAF50;
    outline: none;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-btn:hover {
    background-color: #45a049;
}

.login-btn i {
    margin-right: 8px;
}

.error-message {
    color: #f44336;
    text-align: center;
    margin-top: 15px;
    min-height: 20px;
}

/* 管理面板样式 */
.dashboard-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.header h1 {
    color: #333;
    font-size: 28px;
    font-weight: 600;
}

.logout-btn {
    background-color: var(--danger-color);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: var(--transition);
    font-weight: 500;
}

.logout-btn:hover {
    background-color: var(--danger-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(244, 67, 54, 0.3);
}

.logout-btn i {
    margin-right: 8px;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: white;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.stat-card h3 {
    color: #666;
    margin-bottom: 10px;
    font-size: 16px;
    font-weight: 500;
}

.stat-card .number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.action-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.action-btn {
    padding: 12px 20px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    font-size: 16px;
    transition: var(--transition);
    font-weight: 500;
}

.action-btn:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.action-btn i {
    margin-right: 8px;
}

.vehicles-table {
    background-color: white;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    overflow: hidden;
    width: 100%;
    transition: var(--transition);
}

.vehicles-table:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.vehicles-table table {
    width: 100%;
    border-collapse: collapse;
}

.vehicles-table th,
.vehicles-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.vehicles-table th {
    background-color: var(--light-gray);
    font-weight: 600;
    color: #555;
    font-size: 14px;
    position: relative;
}

.vehicles-table tr {
    transition: var(--transition);
}

.vehicles-table tr:hover {
    background-color: #f8f9fa;
    transform: scale(1.002);
}

.vehicles-table tr:last-child td {
    border-bottom: none;
}

.table-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.table-btn {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    font-size: 14px;
    transition: var(--transition);
    font-weight: 500;
}

.edit-btn {
    background-color: var(--warning-color);
    color: #333;
}

.edit-btn:hover {
    background-color: #e0a800;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(255, 193, 7, 0.3);
}

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

.delete-btn:hover {
    background-color: var(--danger-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(244, 67, 54, 0.3);
}

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

.view-btn:hover {
    background-color: #138496;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(23, 162, 184, 0.3);
}

.table-btn i {
    margin-right: 5px;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 30px;
    gap: 10px;
}

.page-btn {
    padding: 8px 15px;
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

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

.page-btn:hover:not(.active) {
    background-color: #f5f5f5;
    transform: translateY(-1px);
    border-color: var(--border-color);
}

.page-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* 车辆信息表单样式 */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.back-btn {
    background-color: #6c757d;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.back-btn:hover {
    background-color: #5a6268;
}

.back-btn i {
    margin-right: 8px;
}

.form-container {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

.form-title {
    margin-bottom: 25px;
    text-align: center;
    color: #333;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -10px 15px;
}

.form-group.full-width {
    flex: 1 0 100%;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    border-color: #4CAF50;
    outline: none;
}

.photo-upload {
    border: 2px dashed #ddd;
    border-radius: 4px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.3s;
}

.photo-upload:hover {
    border-color: #4CAF50;
}

.photo-preview {
    max-width: 100%;
    max-height: 200px;
    margin-top: 10px;
    display: none;
}

.form-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-weight: 500;
}

.btn i {
    margin-right: 8px;
}

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

.submit-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

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

.cancel-btn:hover {
    background-color: var(--danger-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(244, 67, 54, 0.3);
}

/* 搜索栏样式 */
.search-filter-bar {
    background-color: white;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    padding: 20px;
    margin-bottom: 30px;
    transition: var(--transition);
}

.search-filter-bar:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.search-filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
}

.search-group {
    flex: 1;
    min-width: 200px;
}

.search-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
    font-size: 14px;
}

.search-group input,
.search-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: var(--transition);
}

.search-group input:focus,
.search-group select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

.search-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

.search-btn {
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    font-weight: 500;
    transition: var(--transition);
}

.search-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.reset-btn {
    padding: 10px 20px;
    background-color: var(--gray-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    font-weight: 500;
    transition: var(--transition);
}

.reset-btn:hover {
    background-color: #5a6268;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(108, 117, 125, 0.3);
}

/* 用户下拉菜单样式 */
.user-dropdown {
    position: relative;
    display: inline-block;
}

.user-dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.user-dropdown-trigger:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.user-dropdown-trigger:active {
    transform: translateY(0);
}

.username {
    font-size: 14px;
    font-weight: 500;
    color: white;
    min-width: 60px;
}

/* 用户角色样式 */
.user-role {
    font-size: 12px;
    color: #8BC34A;
    background-color: rgba(139, 195, 74, 0.15);
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 4px;
    font-weight: 400;
    letter-spacing: 0.5px;
}

.user-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 5px;
    background-color: white;
    border-radius: 8px;
    box-shadow: var(--box-shadow-lg);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

/* 鼠标悬浮显示下拉菜单 */
.user-dropdown:hover .user-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 点击触发方式作为备选 */
.user-dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    padding: 12px 16px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 400;
    white-space: nowrap;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.dropdown-item:hover {
    background-color: var(--light-gray);
    transform: translateX(4px);
    color: var(--primary-color);
}

.dropdown-item i {
    width: 16px;
    text-align: center;
    font-size: 14px;
}

.dropdown-item:first-child {
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

.dropdown-item:last-child {
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
}

.dropdown-divider {
    height: 1px;
    background-color: #eee;
    margin: 4px 0;
}

/* 通知图标样式 */
.notification {
    position: relative;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

.notification .badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background-color: var(--danger-color);
    color: white;
    border-radius: 50%;
    width: 16px;
    height: 16px;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: pulseNotification 2s infinite;
}

@keyframes pulseNotification {
    0% {
        box-shadow: 0 0 0 0 rgba(244, 67, 54, 0.7);
    }
    70% {
        box-shadow: 0 0 0 4px rgba(244, 67, 54, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(244, 67, 54, 0);
    }
}

/* 用户头像样式 */
.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--primary-color), #8BC34A);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    cursor: pointer;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.avatar:hover {
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.avatar:hover img {
    transform: scale(1.05);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 15px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .vehicles-table {
        overflow-x: auto;
    }
    
    .form-group {
        flex: 1 0 100%;
    }
    
    .search-filter-row {
        flex-direction: column;
    }
    
    /* 响应式下拉菜单 */
    .username {
        display: none;
    }
    
    .user-role {
        display: none;
    }
    
    .user-dropdown-menu {
        min-width: 140px;
        right: -10px;
    }
    
    .avatar {
        width: 32px;
        height: 32px;
    }
    
    .notification {
        padding: 6px;
    }
    
    .notification .badge {
        width: 14px;
        height: 14px;
        font-size: 10px;
    }
}