:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --text-muted: #6c757d;
    --sidebar-bg: white;
    --card-bg: white;
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --border-color: #dee2e6;
    --primary-color: #0061ff;
    --primary-light: #e1efff;
    --primary-lighter: #f0f7ff;
    --danger-color: #dc3545;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --secondary-color: #6c757d;
    --modal-bg: white;
    --dropzone-border: #0061ff;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e1e1e1;
    --text-muted: #a0a0a0;
    --sidebar-bg: #1e1e1e;
    --card-bg: #2d2d2d;
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    --border-color: #444;
    --primary-color: #4d8bf8;
    --primary-light: #1a3b6d;
    --primary-lighter: #162c4e;
    --danger-color: #e05260;
    --success-color: #48bb78;
    --warning-color: #f0b429;
    --info-color: #38b2ac;
    --secondary-color: #9ca3af;
    --modal-bg: #2d2d2d;
    --dropzone-border: #4d8bf8;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-color: #121212;
        --text-color: #e1e1e1;
        --text-muted: #a0a0a0;
        --sidebar-bg: #1e1e1e;
        --card-bg: #2d2d2d;
        --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
        --border-color: #444;
        --primary-color: #4d8bf8;
        --primary-light: #1a3b6d;
        --primary-lighter: #162c4e;
        --danger-color: #e05260;
        --success-color: #48bb78;
        --warning-color: #f0b429;
        --info-color: #38b2ac;
        --secondary-color: #9ca3af;
        --modal-bg: #2d2d2d;
        --dropzone-border: #4d8bf8;
    }
}

body {
    background-color: var(--bg-color);
    min-height: 100vh;
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.sidebar {
    background-color: var(--sidebar-bg);
    height: 100vh;
    position: fixed;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease;
    z-index: 1030;
}

/* 响应式调整 */
@media (max-width: 1200px) and (min-width: 992px) {
    .sidebar {
        font-size: 0.9rem;
    }
    .sidebar .btn {
        font-size: 0.85rem;
        padding: 0.375rem 0.5rem;
    }
}

.main-content {
    margin-left: 250px;
    padding: 20px;
}

@media (max-width: 991.98px) {
    .main-content {
        margin-left: 0;
    }
    .sidebar {
        position: relative;
        height: auto;
        width: 100%;
    }
}

.file-card {
    transition: all 0.2s;
    cursor: pointer;
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

.file-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow);
}

.dropzone {
    border: 2px dashed var(--dropzone-border);
    border-radius: 5px;
    padding: 20px;
    text-align: center;
    background-color: var(--primary-lighter);
    cursor: pointer;
    transition: all 0.3s;
}

.dropzone:hover {
    background-color: var(--primary-light);
}

.project-item {
    cursor: pointer;
    padding: 10px 15px;
    border-radius: 5px;
    transition: all 0.2s;
    color: var(--text-color);
}

.project-item:hover {
    background-color: var(--primary-lighter);
}

.project-item.active {
    background-color: var(--primary-light);
    font-weight: bold;
}

.file-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.modal-confirm {
    color: var(--text-color);
}

.modal-confirm .modal-content {
    padding: 20px;
    border-radius: 5px;
    border: none;
    background-color: var(--modal-bg);
}

.modal-confirm .modal-header {
    border-bottom: none;
    position: relative;
}

.modal-confirm .modal-footer {
    border: none;
    text-align: center;
    border-radius: 5px;
    padding: 10px;
}

/* 所有模态框的暗色模式支持 */
.modal .modal-content {
    background-color: var(--modal-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

.modal .modal-header, 
.modal .modal-footer {
    border-color: var(--border-color);
}

.modal .form-control, 
.modal .form-select {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

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

.modal .form-label {
    color: var(--text-color);
}

/* 统一开关样式 */
.switch-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

/* 主题切换开关样式 */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.theme-switch {
    display: inline-block;
    position: relative;
    width: 60px;
    height: 34px;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

/* 修复文字颜色 */
.text-muted, .card-text.text-muted, p.text-muted, .card-title {
    color: var(--text-muted) !important;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider-icon {
    margin-left: 10px;
    font-size: 1.2rem;
}

/* 响应式设计优化 */
@media (max-width: 992px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding-bottom: 1rem;
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
    }
    
    .col-md-3 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

@media (max-width: 576px) {
    .col-md-3 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .btn-group-sm .btn {
        margin-bottom: 0.25rem;
        border-radius: 0.25rem !important;
    }
}

/* 卡片和模态框样式优化 */
.card, .modal-content {
    border-radius: 0.5rem;
    overflow: hidden;
    border-color: var(--border-color);
}

.toast {
    border-radius: 0.5rem;
}

/* 登录页面样式 */
.login-container {
    background-color: var(--card-bg);
    color: var(--text-color);
    box-shadow: var(--card-shadow);
    transition: background-color 0.3s ease, color 0.3s ease;
}