/* 简单网盘 - 响应式样式文件 */

/* 全局样式 */
:root {
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0, 123, 255, 0.1);
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

/* 导航栏样式 */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
    box-shadow: 0 2px 20px rgba(0, 123, 255, 0.3);
    border: none;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
}

.navbar-brand i {
    color: #ffd700;
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 123, 255, 0.2);
}

.card-header {
    background: linear-gradient(135deg, var(--light-color) 0%, #e9ecef 100%);
    border-bottom: 2px solid var(--primary-color);
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    font-weight: 600;
}

.card-header h5 {
    color: var(--primary-color);
    margin: 0;
}

.card-header i {
    color: var(--primary-color);
}

/* 文件上传区域 */
.upload-area {
    border: 3px dashed var(--primary-color);
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.05) 0%, rgba(0, 123, 255, 0.1) 100%);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.upload-area:hover {
    border-color: var(--primary-dark);
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.1) 0%, rgba(0, 123, 255, 0.2) 100%);
    transform: scale(1.02);
}

.upload-area:hover::before {
    left: 100%;
}

.upload-area.dragover {
    border-color: var(--success-color);
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(40, 167, 69, 0.2) 100%);
    transform: scale(1.05);
}

.upload-area i {
    transition: var(--transition);
}

.upload-area:hover i {
    transform: scale(1.1) rotate(5deg);
}

/* 进度条样式 */
.progress {
    height: 8px;
    border-radius: 4px;
    background: rgba(0, 123, 255, 0.1);
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--info-color) 100%);
    transition: width 0.3s ease;
}

.progress-bar-striped {
    background-image: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 1rem 1rem;
}

/* 文件列表样式 */
.file-item {
    border: 1px solid #e9ecef;
    border-radius: var(--border-radius);
    padding: 15px;
    margin-bottom: 10px;
    background: rgba(255, 255, 255, 0.9);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.file-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.file-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.15);
    border-color: var(--primary-color);
}

.file-item:hover::before {
    transform: scaleY(1);
}

.file-icon {
    font-size: 2rem;
    margin-right: 15px;
    color: var(--primary-color);
    transition: var(--transition);
}

.file-item:hover .file-icon {
    transform: scale(1.1) rotate(5deg);
}

.file-info h6 {
    color: var(--dark-color);
    margin-bottom: 5px;
    font-weight: 600;
}

.file-info small {
    color: var(--secondary-color);
}

.file-actions {
    opacity: 0;
    transition: var(--transition);
}

.file-item:hover .file-actions {
    opacity: 1;
}

/* 按钮样式 */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    box-shadow: 0 2px 10px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 123, 255, 0.4);
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #c82333 100%);
    border: none;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #1e7e34 100%);
    border: none;
}

/* 模态框样式 */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.modal-header .btn-close {
    filter: invert(1);
}

/* 存储空间样式 */
#storage-progress {
    background: linear-gradient(135deg, var(--info-color) 0%, var(--primary-color) 100%);
    transition: width 0.5s ease;
}

/* 加载动画 */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 123, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* 淡入动画 */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

/* 滑入动画 */
.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 10px;
    }
    
    .upload-area {
        padding: 30px 15px !important;
    }
    
    .upload-area h5 {
        font-size: 1.1rem;
    }
    
    .upload-area i {
        font-size: 2rem !important;
    }
    
    .file-item {
        padding: 10px;
    }
    
    .file-icon {
        font-size: 1.5rem;
        margin-right: 10px;
    }
    
    .btn-group .btn {
        font-size: 0.8rem;
        padding: 0.25rem 0.5rem;
    }
    
    .card-header h5 {
        font-size: 1rem;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .file-item {
        flex-direction: column;
        text-align: center;
    }
    
    .file-actions {
        margin-top: 10px;
        opacity: 1;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .btn-group .btn {
        margin-bottom: 5px;
        border-radius: var(--border-radius) !important;
    }
}

/* 暗色主题支持 */
@media (prefers-color-scheme: dark) {
    .card {
        background: rgba(52, 58, 64, 0.95);
        color: #f8f9fa;
    }
    
    .card-header {
        background: linear-gradient(135deg, #495057 0%, #6c757d 100%);
        color: #f8f9fa;
    }
    
    .file-item {
        background: rgba(52, 58, 64, 0.9);
        border-color: #495057;
        color: #f8f9fa;
    }
    
    .file-info h6 {
        color: #f8f9fa;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 123, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #003d82 100%);
}

/* 工具提示样式 */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    background: linear-gradient(135deg, var(--dark-color) 0%, #495057 100%);
    border-radius: var(--border-radius);
}

/* 徽章样式 */
.badge {
    border-radius: var(--border-radius);
    font-weight: 500;
}

.badge-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

/* 表格样式 */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table thead th {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    font-weight: 600;
}

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

.table tbody tr:hover {
    background: rgba(0, 123, 255, 0.05);
    transform: scale(1.01);
}

/* 分页样式 */
.pagination .page-link {
    border: none;
    color: var(--primary-color);
    margin: 0 2px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.pagination .page-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.pagination .page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
}

/* 输入框样式 */
.form-control {
    border: 2px solid #e9ecef;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* 搜索框样式 */
.search-box {
    position: relative;
}

.search-box i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-color);
    z-index: 10;
}

.search-box .form-control {
    padding-left: 45px;
}

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--secondary-color);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h5 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

/* 成功/错误消息样式 */
.alert {
    border: none;
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.alert-success {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(40, 167, 69, 0.05) 100%);
    border-left-color: var(--success-color);
    color: var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.1) 0%, rgba(220, 53, 69, 0.05) 100%);
    border-left-color: var(--danger-color);
    color: var(--danger-color);
}

.alert-info {
    background: linear-gradient(135deg, rgba(23, 162, 184, 0.1) 0%, rgba(23, 162, 184, 0.05) 100%);
    border-left-color: var(--info-color);
    color: var(--info-color);
}