/* 合并的CSS文件 - 包含所有必要的样式 */

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

/* 通用样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--bs-body-color);
    background-color: var(--bg-primary);
}

/* 加载动画 */
.spinner-border {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    vertical-align: -0.125em;
    border: 0.25em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-border 0.75s linear infinite;
}

@keyframes spinner-border {
    to {
        transform: rotate(360deg);
    }
}

/* 按钮样式 */
.btn {
    display: inline-block;
    font-weight: 400;
    line-height: 1.5;
    color: var(--bs-btn-color);
    text-align: center;
    text-decoration: none;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    background-color: var(--bs-btn-bg);
    border: var(--bs-border-width) solid var(--bs-btn-border-color);
    padding: var(--bs-btn-padding-y) var(--bs-btn-padding-x);
    font-size: var(--bs-btn-font-size);
    border-radius: var(--bs-border-radius);
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

/* 卡片样式 */
.card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: var(--bs-card-bg);
    background-clip: border-box;
    border: var(--bs-card-border-width) solid var(--bs-card-border-color);
    border-radius: var(--bs-card-border-radius);
}

/* 表单样式 */
.form-control {
    display: block;
    width: 100%;
    padding: var(--bs-input-padding-y) var(--bs-input-padding-x);
    font-size: var(--bs-input-font-size);
    font-weight: var(--bs-input-font-weight);
    line-height: var(--bs-input-line-height);
    color: var(--bs-input-color);
    background-color: var(--bs-input-bg);
    background-image: var(--bs-input-bg-image);
    border: var(--bs-input-border-width) solid var(--bs-input-border-color);
    appearance: none;
    border-radius: var(--bs-input-border-radius);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

/* 工具类 */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.justify-content-center { justify-content: center !important; }
.align-items-center { align-items: center !important; }
.text-center { text-align: center !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mt-3 { margin-top: 1rem !important; }
.p-3 { padding: 1rem !important; }

/* 响应式网格 */
.container { width: 100%; padding-right: 0.75rem; padding-left: 0.75rem; margin-right: auto; margin-left: auto; }
.row { display: flex; flex-wrap: wrap; margin-right: -0.75rem; margin-left: -0.75rem; }
.col { flex: 1 0 0%; }
.col-12 { flex: 0 0 auto; width: 100%; }
.col-md-6 { flex: 0 0 auto; width: 50%; }
.col-lg-4 { flex: 0 0 auto; width: 33.333333%; }

@media (min-width: 768px) {
    .container { max-width: 720px; }
}

@media (min-width: 992px) {
    .container { max-width: 960px; }
}

@media (min-width: 1200px) {
    .container { max-width: 1140px; }
}