.flex-wrapper {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  justify-content: space-between;
}

.footer {
  padding-top: 1rem;
  padding-bottom: 1rem;
  margin-top: .5rem;
  border-top: 1px solid #dee2e6;
}

.page-header {
  border-bottom: 1px solid #8f8686;
  margin-bottom: 10px;
}

/* 颜色变量定义 */
:root {
    --primary: #3B82F6;      /* 柔和蓝色 */
    --primary-hover: #2563EB; /* 蓝色悬停 */
    --secondary: #64748B;     /* 石板灰 */
    --secondary-hover: #475569; /* 灰悬停 */
    --dark: #1E293B;          /* 深蓝灰 */
    --light: #F8FAFC;         /* 近白色 */
    --border-radius: 0.375rem; /* 按钮圆角 */
}


/* 卡片样式 */
.card {
    border-radius: calc(var(--border-radius) + 0.125rem);
    border: 1px solid #E2E8F0;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    transition: all 0.2s ease-in-out;
    margin-bottom: 1.5rem;
}

.card:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}



/* 按钮样式 */
.btn {
    padding: 0.5rem 1rem;
    font-size: 1rem;
    border-radius: 0.5rem;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    padding: 10px 20px;
    transition: all 0.3s ease;
}


.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.btn-primary:active {
    background-color: #0a58ca;
    border-color: #0a53be;
}


.btn-primary {
    color: #fff;
    background-color: var(--primary);
    border-color: var(--primary);
    border-radius: var(--border-radius);
    transition: all 0.2s ease-in-out;
}

.btn-primary:hover {
    color: #fff;
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.2);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px -1px rgba(59, 130, 246, 0.3);
}

/* 次要按钮样式 */
.btn-secondary {
    color: #fff;
    background-color: var(--secondary);
    border-color: var(--secondary);
    border-radius: var(--border-radius);
    transition: all 0.2s ease-in-out;
}

.btn-secondary:hover {
    color: #fff;
    background-color: var(--secondary-hover);
    border-color: var(--secondary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(100, 116, 139, 0.2);
}

.btn-secondary:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px -1px rgba(100, 116, 139, 0.3);
}

/* 轮廓按钮样式 */
.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
    border-radius: var(--border-radius);
    transition: all 0.2s ease-in-out;
}

.btn-outline-primary:hover {
    color: #fff;
    background-color: var(--primary);
    border-color: var(--primary);
}

.btn-outline-secondary {
    color: var(--secondary);
    border-color: var(--secondary);
    border-radius: var(--border-radius);
    transition: all 0.2s ease-in-out;
}

.btn-outline-secondary:hover {
    color: #fff;
    background-color: var(--secondary);
    border-color: var(--secondary);
}

/* 输入框样式 */
.form-control {
    border-radius: var(--border-radius);
    border-color: #E2E8F0;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25);
}

/* 卡片样式 */
.card {
    border-radius: calc(var(--border-radius) + 0.125rem);
    border: 1px solid #E2E8F0;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    transition: all 0.2s ease-in-out;
    margin-bottom: 1.5rem;
}

.card:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

.card-header {
    background-color: #fff;
    border-bottom: none;
}

.card-body {
    padding: 20px;
}

/* 进度条样式 */
.progress-bar {
    background-color: #0d6efd;
    height: 12px;
}

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

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