/* 全局样式 */
:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --info-color: #3498db;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --border-radius: 0.25rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --transition: all 0.3s ease;
}

html, body {
    height: 100%;
    margin: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1 0 auto;
}

/* 导航栏样式 */
.navbar-nav .nav-item {
    margin-right: 0.5rem;
}

.navbar-nav .nav-link {
    padding: 8px 1.5rem;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* 用户名放到最右边 */
.navbar-nav.user-nav {
    margin-left: auto;
}

/* 下拉菜单样式 */
.dropdown-menu.show {
    display: block;
}

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    right: 0;
    z-index: 1000;
}

/* 登录页面样式 */
body.bg-light {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    background-size: cover;
    background-attachment: fixed;
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

.login-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/pattern.svg');
    opacity: 0.1;
    z-index: -1;
}

.login-form {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 35px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 450px;
    backdrop-filter: blur(10px);
}

.login-title {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    font-weight: 700;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
}

footer {
    flex-shrink: 0;
    background-color: var(--secondary-color);
    color: white;
    padding: 1.5rem 0;
    margin-top: auto !important;
}

/* 导航栏样式 */
.navbar {
    background-color: var(--secondary-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 0.75rem 1rem;
}

.navbar-brand {
    font-weight: 700;
    color: white !important;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

.navbar-nav .nav-link:hover {
    color: white !important;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
}

.navbar-nav .active > .nav-link {
    color: white !important;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
}

.dropdown-menu {
    background-color: var(--secondary-color);
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    padding: 0.5rem;
}

.dropdown-item {
    color: rgba(255, 255, 255, 0.85);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.dropdown-item:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.25rem 1rem rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    margin-bottom: 1.5rem;
}

.card:hover {
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.card-header {
    background-color: rgba(0, 0, 0, 0.03);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-weight: 600;
    padding: 1rem 1.25rem;
}

.card-body {
    padding: 1.5rem;
}

/* 表格样式 */
.table {
    margin-bottom: 0;
}

.table thead th {
    border-top: none;
    border-bottom: 2px solid rgba(0, 0, 0, 0.1);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    color: #555;
}

.table-hover tbody tr:hover {
    background-color: rgba(52, 152, 219, 0.05);
}

/* 按钮样式 */
.btn {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-secondary:hover {
    background-color: #1a252f;
    border-color: #1a252f;
}

.btn-success {
    background-color: #3498db;
    border-color: #3498db;
}

.btn-success:hover {
    background-color: #3498db;
    border-color: #3498db;
}

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

.btn-danger:hover {
    background-color: #c0392b;
    border-color: #c0392b;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

/* 表单样式 */
.form-control {
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #555;
}

.form-text {
    color: #777;
    font-size: 0.875rem;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* 页面标题 */
.page-title {
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    border-bottom: 2px solid rgba(0, 0, 0, 0.05);
    padding-bottom: 0.5rem;
}

/* 状态标签 */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
    border-radius: 50rem;
}

/* 仪表板卡片 */
.dashboard-card {
    text-align: center;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 0.25rem 1rem rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    margin-bottom: 1.5rem;
    background-color: white;
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.12);
}

.dashboard-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.dashboard-card .count {
    font-size: 2rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.dashboard-card .title {
    font-size: 1rem;
    font-weight: 500;
    color: #777;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 登录页面样式 */
.login-container {
    max-width: 400px;
    margin: 5rem auto;
}


.login-header {
    
    color: white;
    text-align: center;
    padding: 2rem;
}

.login-header h1 {
    font-weight: 700;
    margin-bottom: 0;
}

.login-body {
    padding: 2rem;
}

.login-footer {
    background-color: rgba(0, 0, 0, 0.02);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1rem;
    text-align: center;
    color: #777;
}

/* 动画效果（避免对父级应用 transform 以免影响 Bootstrap 模态框的定位与层级） */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* 项目状态标签 */
.status-badge {
    padding: 0.35em 0.65em;
    border-radius: 50rem;
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: capitalize;
    color: white;
    background-color: #9b59b6;
}

.status-planning {
    background-color: #3498db;
    color: white;
}

.status-in-progress {
    background-color: #f39c12;
    color: white;
}

.status-completed {
    background-color: #2ecc71;
    color: white;
}

.status-on-hold {
    background-color: #95a5a6;
    color: white;
}

.status-cancelled {
    background-color: #e74c3c;
    color: white;
}

.status-pending {
    background-color: #9b59b6;
    color: white;
}

/* 操作按钮间距 */
.btn-group .btn {
    margin: 0 10px;
}

.btn-group .btn:first-child {
    margin-left: 0;
}

.btn-group .btn:last-child {
    margin-right: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .dashboard-card {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .dashboard-card .icon {
        font-size: 2rem;
    }
    
    .dashboard-card .count {
        font-size: 1.5rem;
    }
    
    .dashboard-card .title {
        font-size: 0.875rem;
    }
    
    .table-responsive {
        border: none;
    }
    
    .page-title {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-block {
        margin-bottom: 0.5rem;
    }
    
    .container {
        padding-left: 10px;
        padding-right: 10px;
    }
    
    .form-group {
        margin-bottom: 0.75rem;
    }
    
    .alert {
        padding: 0.75rem;
        margin-bottom: 1rem;
    }
    
    footer {
        margin-top: 2rem;
        padding: 1rem 0;
        text-align: center;
    }
    
    footer .text-md-end {
        text-align: center !important;
        margin-top: 0.5rem;
    }
}

/* 小屏幕设备优化 */
@media (max-width: 576px) {
    .dashboard-card {
        padding: 0.75rem;
    }
    
    .dashboard-card .icon {
        font-size: 1.75rem;
        margin-bottom: 0.5rem;
    }
    
    .dashboard-card .count {
        font-size: 1.25rem;
    }
    
    .dashboard-card .title {
        font-size: 0.75rem;
    }
    
    .page-title {
        font-size: 1.25rem;
    }
    
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 0.375rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .table th, .table td {
        padding: 0.5rem;
        font-size: 0.875rem;
    }
    
    .status-badge {
        font-size: 0.75rem;
    }
}

/* 页脚样式 */
footer {
    background-color: var(--secondary-color);
    color: rgba(255, 255, 255, 0.7);
    padding: 1.5rem 0;
    margin-top: 3rem;
}

footer a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

footer a:hover {
    color: white;
    text-decoration: underline;
}

/* 消息提示样式 */
.alert {
    border: none;
    border-radius: 0.5rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 0.25rem 1rem rgba(0, 0, 0, 0.08);
}

.alert-success {
    background-color: rgba(46, 204, 113, 0.1);
    color: #27ae60;
}

.alert-danger {
    background-color: rgba(231, 76, 60, 0.1);
    color: #c0392b;
}

.alert-warning {
    background-color: rgba(243, 156, 18, 0.1);
    color: #d35400;
}

.alert-info {
    background-color: rgba(52, 152, 219, 0.1);
    color: #2980b9;
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}