/* ==========================================================================
   通用样式库 - common.css
   版本: 1.0.0
   说明: 提供常用的基础样式和工具类，适用于各种Web项目
   ========================================================================== */

/* ============================================================
   1. 浏览器重置样式 (Reset CSS)
   ============================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    line-height: 1.15;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    padding:0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    color: #333;
    background-color: #fff;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0.5em 0;
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    /*margin-bottom: 1rem;*/
    /*line-height: 1.6;*/
}

ul, ol {
    /*margin: 0 0 1rem 1.5rem;*/
}

li {
    /*margin-bottom: 0.5rem;*/
}

ul,ol,li {
    list-style: none;
}

.clear {
    clear: both;
}

img {
    display: inline-block;
    max-width: 100%;
    height: auto;
    /*vertical-align: middle;*/
    border-style: none;
}


.color-green {
    color: #50CD89;
}

.color-red {
    color: #FD0E0E;
}

.bg-green {
    background: #50CD89;
}


.bg-red {
    background: #FD0E0E;
}


.table-wrap table,tr,th,td {
    border-collapse: collapse;
    border-spacing: 0;
}

a {
    color: #007bff;
    text-decoration: none;
    background-color: transparent;
    transition: color 0.3s ease, background-color 0.3s ease;
}

a:hover {
    color: #0056b3;
    text-decoration: underline;
}

button {
    border-radius: 0;
    font-family: inherit;
    border: none;
    outline: none;
    cursor: pointer;
    background-color: transparent;
    padding: 0;
}

input, button, select, textarea {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}


a {
    color: #000;
}

a:hover {
    text-decoration: none;
}
/* ============================================================
   2. 基础排版
   ============================================================ */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    /*padding: 0 15px;*/
}

.container-fluid {
    width: 100%;
    padding: 0 15px;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.text-justify {
    text-align: justify;
}

.text-uppercase {
    text-transform: uppercase;
}

.text-lowercase {
    text-transform: lowercase;
}

.text-capitalize {
    text-transform: capitalize;
}

.text-muted {
    color: #6c757d;
}

.text-primary {
    color: #007bff;
}

.text-success {
    color: #28a745;
}

.text-danger {
    color: #dc3545;
}

.text-warning {
    color: #ffc107;
}

.text-info {
    color: #17a2b8;
}

.font-weight-light {
    font-weight: 300;
}

.font-weight-normal {
    font-weight: 400;
}

.font-weight-bold {
    font-weight: 700;
}

.font-italic {
    font-style: italic;
}

/* ============================================================
   3. 布局工具类
   ============================================================ */
.d-none {
    display: none;
}

.d-block {
    display: block;
}

.d-inline {
    display: inline;
}

.d-inline-block {
    display: inline-block;
}

.d-flex {
    display: flex;
}

.d-grid {
    display: grid;
}

.flex-row {
    flex-direction: row;
}

.flex-column {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.justify-content-start {
    justify-content: flex-start;
}

.justify-content-end {
    justify-content: flex-end;
}

.justify-content-center {
    justify-content: center;
}

.justify-content-between {
    justify-content: space-between;
}

.justify-content-around {
    justify-content: space-around;
}

.align-items-start {
    align-items: flex-start;
}

.align-items-end {
    align-items: flex-end;
}

.align-items-center {
    align-items: center;
}

.align-items-baseline {
    align-items: baseline;
}

.align-items-stretch {
    align-items: stretch;
}

.align-self-auto {
    align-self: auto;
}

.align-self-start {
    align-self: flex-start;
}

.align-self-end {
    align-self: flex-end;
}

.align-self-center {
    align-self: center;
}

.align-self-baseline {
    align-self: baseline;
}

.align-self-stretch {
    align-self: stretch;
}

.flex-grow-0 {
    flex-grow: 0;
}

.flex-grow-1 {
    flex-grow: 1;
}

.flex-shrink-0 {
    flex-shrink: 0;
}

.flex-shrink-1 {
    flex-shrink: 1;
}

/* ============================================================
   4. 间距工具类
   ============================================================ */
/* Margin */
.m-0 { margin: 0; }
.m-1 { margin: 0.25rem; }
.m-2 { margin: 0.5rem; }
.m-3 { margin: 1rem; }
.m-4 { margin: 1.5rem; }
.m-5 { margin: 3rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: 0.25rem; }
.ml-2 { margin-left: 0.5rem; }
.ml-3 { margin-left: 1rem; }
.ml-4 { margin-left: 1.5rem; }
.ml-5 { margin-left: 3rem; }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: 0.25rem; }
.mr-2 { margin-right: 0.5rem; }
.mr-3 { margin-right: 1rem; }
.mr-4 { margin-right: 1.5rem; }
.mr-5 { margin-right: 3rem; }

.mx-0 { margin-left: 0; margin-right: 0; }
.mx-1 { margin-left: 0.25rem; margin-right: 0.25rem; }
.mx-2 { margin-left: 0.5rem; margin-right: 0.5rem; }
.mx-3 { margin-left: 1rem; margin-right: 1rem; }
.mx-4 { margin-left: 1.5rem; margin-right: 1.5rem; }
.mx-5 { margin-left: 3rem; margin-right: 3rem; }

.my-0 { margin-top: 0; margin-bottom: 0; }
.my-1 { margin-top: 0.25rem; margin-bottom: 0.25rem; }
.my-2 { margin-top: 0.5rem; margin-bottom: 0.5rem; }
.my-3 { margin-top: 1rem; margin-bottom: 1rem; }
.my-4 { margin-top: 1.5rem; margin-bottom: 1.5rem; }
.my-5 { margin-top: 3rem; margin-bottom: 3rem; }

/* Padding */
.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: 0.25rem; }
.pt-2 { padding-top: 0.5rem; }
.pt-3 { padding-top: 1rem; }
.pt-4 { padding-top: 1.5rem; }
.pt-5 { padding-top: 3rem; }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: 0.25rem; }
.pb-2 { padding-bottom: 0.5rem; }
.pb-3 { padding-bottom: 1rem; }
.pb-4 { padding-bottom: 1.5rem; }
.pb-5 { padding-bottom: 3rem; }

.pl-0 { padding-left: 0; }
.pl-1 { padding-left: 0.25rem; }
.pl-2 { padding-left: 0.5rem; }
.pl-3 { padding-left: 1rem; }
.pl-4 { padding-left: 1.5rem; }
.pl-5 { padding-left: 3rem; }

.pr-0 { padding-right: 0; }
.pr-1 { padding-right: 0.25rem; }
.pr-2 { padding-right: 0.5rem; }
.pr-3 { padding-right: 1rem; }
.pr-4 { padding-right: 1.5rem; }
.pr-5 { padding-right: 3rem; }

.px-0 { padding-left: 0; padding-right: 0; }
.px-1 { padding-left: 0.25rem; padding-right: 0.25rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-3 { padding-left: 1rem; padding-right: 1rem; }
.px-4 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-5 { padding-left: 3rem; padding-right: 3rem; }

.py-0 { padding-top: 0; padding-bottom: 0; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 1rem; padding-bottom: 1rem; }
.py-4 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-5 { padding-top: 3rem; padding-bottom: 3rem; }

/* ============================================================
   5. 边框工具类
   ============================================================ */
.border {
    border: 1px solid #dee2e6;
}

.border-0 {
    border: 0;
}

.border-top {
    border-top: 1px solid #dee2e6;
}

.border-top-0 {
    border-top: 0;
}

.border-right {
    border-right: 1px solid #dee2e6;
}

.border-right-0 {
    border-right: 0;
}

.border-bottom {
    border-bottom: 1px solid #dee2e6;
}

.border-bottom-0 {
    border-bottom: 0;
}

.border-left {
    border-left: 1px solid #dee2e6;
}

.border-left-0 {
    border-left: 0;
}

.rounded {
    border-radius: 0.25rem;
}

.rounded-top {
    border-top-left-radius: 0.25rem;
    border-top-right-radius: 0.25rem;
}

.rounded-right {
    border-top-right-radius: 0.25rem;
    border-bottom-right-radius: 0.25rem;
}

.rounded-bottom {
    border-bottom-right-radius: 0.25rem;
    border-bottom-left-radius: 0.25rem;
}

.rounded-left {
    border-top-left-radius: 0.25rem;
    border-bottom-left-radius: 0.25rem;
}

.rounded-circle {
    border-radius: 50%;
}

.rounded-0 {
    border-radius: 0;
}

/* ============================================================
   6. 通用组件样式
   ============================================================ */
/* 按钮 */
.btn {
    display: inline-block;
    font-weight: 400;
    color: #212529;
    text-align: center;
    vertical-align: middle;
    user-select: none;
    background-color: transparent;
    border: 1px solid transparent;
    /*padding: 0.375rem 0.75rem;*/
    font-size: 1rem;
    /*line-height: 1.5;*/
    border-radius: 0.25rem;
    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;
    cursor: pointer;
}

.btn:hover {
    text-decoration: none;
}

.btn:focus {
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.btn-primary {
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    color: #fff;
    background-color: #0056b3;
    border-color: #004085;
}

.btn-secondary {
    color: #fff;
    background-color: #6c757d;
    border-color: #6c757d;
}

.btn-secondary:hover {
    color: #fff;
    background-color: #545b62;
    border-color: #4e555b;
}

.btn-success {
    color: #fff;
    background-color: #28a745;
    border-color: #28a745;
}

.btn-success:hover {
    color: #fff;
    background-color: #1e7e34;
    border-color: #1c7430;
}

.btn-danger {
    color: #fff;
    background-color: #dc3545;
    border-color: #dc3545;
}

.btn-danger:hover {
    color: #fff;
    background-color: #c82333;
    border-color: #bd2130;
}

.btn-warning {
    color: #212529;
    background-color: #ffc107;
    border-color: #ffc107;
}

.btn-warning:hover {
    color: #212529;
    background-color: #e0a800;
    border-color: #d39e00;
}

.btn-info {
    color: #fff;
    background-color: #17a2b8;
    border-color: #17a2b8;
}

.btn-info:hover {
    color: #fff;
    background-color: #138496;
    border-color: #117a8b;
}

.btn-outline-primary {
    color: #007bff;
    border-color: #007bff;
}

.btn-outline-primary:hover {
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
}

/* 卡片 */
.card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: border-box;
    border: 1px solid rgba(0, 0, 0, 0.125);
    border-radius: 0.25rem;
    margin-bottom: 1.5rem;
}

.card-body {
    flex: 1 1 auto;
    min-height: 1px;
    padding: 1.25rem;
}

.card-title {
    margin-bottom: 0.75rem;
}

.card-text:last-child {
    margin-bottom: 0;
}

.card-header {
    padding: 0.75rem 1.25rem;
    margin-bottom: 0;
    background-color: rgba(0, 0, 0, 0.03);
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
}

.card-footer {
    padding: 0.75rem 1.25rem;
    background-color: rgba(0, 0, 0, 0.03);
    border-top: 1px solid rgba(0, 0, 0, 0.125);
}

/* ============================================================
   7. 响应式设计
   ============================================================ */
/* 断点：移动设备 */
@media (max-width: 576px) {
    h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.75rem;
    }
    h3 {
        font-size: 1.5rem;
    }
    h4 {
        font-size: 1.25rem;
    }
    h5 {
        font-size: 1.125rem;
    }
    .d-sm-none {
        display: none;
    }
    .d-sm-block {
        display: block;
    }
    .flex-sm-column {
        flex-direction: column;
    }
    .flex-sm-row {
        flex-direction: row;
    }
}

/* 断点：平板设备 */
@media (max-width: 768px) {
    .d-md-none {
        display: none;
    }
    .d-md-block {
        display: block;
    }
    .flex-md-column {
        flex-direction: column;
    }
    .flex-md-row {
        flex-direction: row;
    }
}

/* 断点：桌面设备 */
@media (max-width: 992px) {
    .d-lg-none {
        display: none;
    }
    .d-lg-block {
        display: block;
    }
    .flex-lg-column {
        flex-direction: column;
    }
    .flex-lg-row {
        flex-direction: row;
    }
}

/* 断点：大屏幕 */
@media (max-width: 1200px) {
    .d-xl-none {
        display: none;
    }
    .d-xl-block {
        display: block;
    }
    .flex-xl-column {
        flex-direction: column;
    }
    .flex-xl-row {
        flex-direction: row;
    }
}

/* ============================================================
   8. 动画效果
   ============================================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        transform: translate3d(0, 100%, 0);
        visibility: visible;
    }
    to {
        transform: translate3d(0, 0, 0);
    }
}

@keyframes slideInDown {
    from {
        transform: translate3d(0, -100%, 0);
        visibility: visible;
    }
    to {
        transform: translate3d(0, 0, 0);
    }
}

@keyframes slideInLeft {
    from {
        transform: translate3d(-100%, 0, 0);
        visibility: visible;
    }
    to {
        transform: translate3d(0, 0, 0);
    }
}

@keyframes slideInRight {
    from {
        transform: translate3d(100%, 0, 0);
        visibility: visible;
    }
    to {
        transform: translate3d(0, 0, 0);
    }
}

.fade-in {
    animation-name: fadeIn;
    animation-duration: 0.5s;
    animation-fill-mode: both;
}

.slide-in-up {
    animation-name: slideInUp;
    animation-duration: 0.5s;
    animation-fill-mode: both;
}

.slide-in-down {
    animation-name: slideInDown;
    animation-duration: 0.5s;
    animation-fill-mode: both;
}

.slide-in-left {
    animation-name: slideInLeft;
    animation-duration: 0.5s;
    animation-fill-mode: both;
}

.slide-in-right {
    animation-name: slideInRight;
    animation-duration: 0.5s;
    animation-fill-mode: both;
}

/* ============================================================
   9. 辅助类
   ============================================================ */
.overflow-hidden {
    overflow: hidden;
}

.overflow-auto {
    overflow: auto;
}

.cursor-pointer {
    cursor: pointer;
}

.cursor-default {
    cursor: default;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sr-only-focusable:active, .sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

@media screen and (max-width: 1400px) {
    .container {
        padding: 0 15px;
    }

}