/* UC风格的CSS样式 - 基于UC官网设计 */

/* 全局变量 */
:root {
    --primary-color: #0052D9; /* UC主色调-蓝色 */
    --primary-hover: #0045B3;
    --secondary-color: #00C292; /* 辅助-绿色 */
    --success-color: #00C292;
    --danger-color: #FF5252;
    --warning-color: #FFB400;
    --info-color: #0052D9;
    --bg-color: #F5F7FA; /* 浅灰背景 */
    --card-bg: #FFFFFF;
    --text-color: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --navbar-bg: #FFFFFF;
    --footer-bg: #2B3441; /* UC深色页脚 */
    --footer-text: #FFFFFF;
    --footer-link: rgba(255,255,255,0.7);
    --card-shadow: 0 2px 12px rgba(0,0,0,0.08);
    --border-color: #E6E8EB;
    --gradient-blue: linear-gradient(135deg, #0052D9, #0080FF);
}

/* 深色模式变量 */
[data-bs-theme="dark"] {
    --primary-color: #0080FF;
    --primary-hover: #0070E0;
    --secondary-color: #00D9A3;
    --success-color: #00D9A3;
    --danger-color: #FF6B6B;
    --warning-color: #FFC107;
    --info-color: #0080FF;
    --bg-color: #1A1F25;
    --card-bg: #2B3441;
    --text-color: #E0E0E0;
    --text-secondary: #B0B0B0;
    --text-muted: #888888;
    --navbar-bg: #2B3441;
    --footer-bg: #1A1F25;
    --footer-text: #E0E0E0;
    --footer-link: rgba(255,255,255,0.5);
    --card-shadow: 0 2px 12px rgba(0,0,0,0.15);
    --border-color: #3A4453;
    --gradient-blue: linear-gradient(135deg, #0052D9, #0080FF);
}

/* 全局样式 */
html, body {
    height: 100%;
}

body {
    font-family: PingFang SC, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Hiragino Sans GB, Microsoft YaHei, Helvetica Neue, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    line-height: 1.6;
}

.content-wrapper {
    flex: 1 0 auto;
    padding-top: 20px;
    padding-bottom: 40px;
}

/* 导航栏样式 - UC风格 */
.navbar {
    background-color: var(--navbar-bg);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 15px 0;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
}

.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    color: var(--text-color);
    transition: color 0.2s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--primary-color);
}

.navbar-nav .nav-link.active {
    position: relative;
}

.navbar-nav .nav-link.active:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
}

/* 移动端导航菜单按钮样式 - 移除选中效果 */
.navbar-toggler {
    outline: none !important;
    border: none !important;
    box-shadow: none !important;
    -webkit-tap-highlight-color: transparent;
}

.navbar-toggler:focus {
    outline: none !important;
    box-shadow: none !important;
}

.navbar-toggler:active {
    outline: none !important;
    box-shadow: none !important;
}

/* 按钮样式 - UC风格 */
.btn {
    border-radius: 4px;
    font-weight: 500;
    padding: 0.5rem 1.25rem;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--gradient-blue);
    border: none;
    box-shadow: 0 4px 10px rgba(0, 82, 217, 0.2);
}

.btn-primary:hover {
    /* 移除颜色变化效果 */
    /* background: var(--primary-hover); */
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 82, 217, 0.3);
}

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

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: white;
}

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

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
}

/* 卡片样式 - UC风格 */
.card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* 首页头部区域 - UC风格 */
.header-container {
    background: var(--gradient-blue);
    color: white;
    padding: 65px 0 90px;
    margin-bottom: -30px;
    position: relative;
    overflow: hidden;
    border-radius: 0 0 50% 50% / 20%;
}

.header-container:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('data:image/svg+xml;base64,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');
    background-size: cover;
    opacity: 0.1;
}

.header-container .container {
    position: relative;
    z-index: 2;
}

.header-title {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.header-desc {
    font-size: 1.3rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 短链接生成卡片 - UC风格 */
.url-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 40px;
    margin-top: 0px;
    margin-bottom: 50px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.12);
    position: relative;
    z-index: 10;
}

@media (max-width: 576px) {
    .url-card {
        padding: 28px;
    }
}

/* 表单元素 - UC风格 */
.form-control {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.7rem 1rem;
    transition: all 0.3s ease;
    background-color: var(--card-bg);
    color: var(--text-color);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 82, 217, 0.15);
}

.form-select {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.75rem 1rem;
    height: auto;
    background-position: right 1rem center;
}

.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 82, 217, 0.15);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

/* 防红选项样式 - UC风格 */
.anti-redirect-options {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.anti-redirect-options:hover {
    border-color: var(--primary-color);
    background-color: rgba(0, 82, 217, 0.05);
}

.anti-redirect-options .form-check-label {
    display: flex;
    align-items: center;
    font-weight: 500;
}

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

/* 结果容器样式 - UC风格 */
.result-container .card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.result-container .card-header {
    background: var(--gradient-blue);
    color: white;
    border-bottom: none;
}

.result-url-box {
    display: flex;
    align-items: center;
    background-color: rgba(0, 82, 217, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
}

.result-url-box input {
    border: none;
    background: transparent;
    flex-grow: 1;
    padding: 0;
    color: var(--primary-color);
    font-weight: 500;
}

.result-url-box input:focus {
    outline: none;
    box-shadow: none;
}

.copy-btn {
    color: var(--primary-color);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    transition: all 0.2s ease;
}

.copy-btn:hover {
    color: var(--primary-hover);
    transform: scale(1.1);
}

/* 功能特性区域 - UC风格 */
.features {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title h2 {
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.section-title p {
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
    border-radius: 8px;
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    border: 1px solid var(--border-color);
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--gradient-blue);
    color: white;
    font-size: 2rem;
}

.feature-title {
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}

.feature-desc {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* 页脚样式 - UC风格 */
footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 60px 0 30px;
}

footer h4 {
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

footer p {
    opacity: 0.8;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 30px;
}

.footer-links a {
    color: var(--footer-link);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: white;
    text-decoration: none;
}

/* 用户中心样式 - UC风格 */
.list-group-item {
    border-color: var(--border-color);
    padding: 0.75rem 1.25rem;
    transition: all 0.2s ease;
}

.list-group-item.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.list-group-item:not(.active):hover {
    background-color: rgba(0, 82, 217, 0.05);
}

/* 数据卡片 - UC风格 */
.data-card {
    border-radius: 8px;
    padding: 20px;
    height: 100%;
    transition: all 0.3s ease;
}

.data-card.bg-primary {
    background: var(--gradient-blue) !important;
}

.data-card.bg-success {
    background: linear-gradient(135deg, var(--success-color), #00E6A8) !important;
}

.data-card .display-4 {
    font-weight: 700;
    margin: 15px 0;
}

/* 表格样式 - UC风格 */
.table {
    border-color: var(--border-color);
}

.table thead th {
    background-color: rgba(0, 0, 0, 0.02);
    font-weight: 600;
    border-bottom-width: 1px;
    color: var(--text-secondary);
}

.table td, .table th {
    padding: 1rem;
    vertical-align: middle;
}

/* 登录注册页面 - UC风格 */
.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 200px);
    padding: 40px 20px;
}

.login-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 558px;
    padding: 40px;
    margin-bottom: 20px;
}

.login-logo {
    text-align: center;
    margin-bottom: 30px;
}

.login-logo h1 {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 10px;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
}

.login-footer a {
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: none;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .header-container {
        padding: 50px 0 70px;
        margin-bottom: -20px;
        border-radius: 0 0 100% 100% / 0%;
    }
    
    .header-title {
        font-size: 2.2rem;
    }
    
    .url-card {
        padding: 20px;
        margin-top: -20px;
    }
    
    .feature-item {
        margin-bottom: 20px;
    }
    
    .login-card {
        padding: 30px 20px;
    }
}

/* 主题切换图标样式 */
.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    outline: none !important;
    color: var(--text-color);
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--primary-color);
}

[data-bs-theme="dark"] .theme-icon-light {
    display: none;
}

[data-bs-theme="dark"] .theme-icon-dark {
    display: inline-block !important;
}

/* 加载动画 */
.spinner-border.text-primary {
    color: var(--primary-color) !important;
}

/* 徽章样式 */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
    border-radius: 4px;
}

.badge.bg-info {
    background-color: rgba(0, 82, 217, 0.1) !important;
    color: var(--primary-color) !important;
}

.badge.bg-secondary {
    background-color: var(--text-muted) !important;
}

/* 模态框样式 */
.modal-content {
    border-radius: 12px;
    border: none;
    box-shadow: 0 25px 50px rgba(0,0,0,0.1);
    overflow: hidden;
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
}

.modal-title {
    font-weight: 600;
}

/* 下拉菜单样式 */
.dropdown-menu {
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    padding: 0.5rem 0;
}

.dropdown-item {
    padding: 0.5rem 1.5rem;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: rgba(0, 82, 217, 0.05);
    color: var(--primary-color);
}

.dropdown-divider {
    border-top: 1px solid var(--border-color);
    margin: 0.5rem 0;
}

/* 自定义动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

/* 工具提示 */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    background-color: var(--footer-bg);
    border-radius: 4px;
    padding: 0.5rem 1rem;
}

/* 短链接样式 */
.short-link {
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: none;
}

.short-link:hover {
    text-decoration: underline;
}

/* 二维码容器 */
.qr-code-container {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
}

.qr-code-container img {
    max-width: 100%;
    height: auto;
}

/* 主题适配 - 深色模式适配 */
[data-bs-theme="dark"] .bg-light,
[data-bs-theme="dark"] .form-component.bg-light {
    background-color: var(--card-bg) !important;
    border-color: var(--border-color) !important;
}

[data-bs-theme="dark"] .form-component {
    background-color: var(--card-bg) !important;
    border-color: var(--border-color) !important;
}

/* 表单元素黑夜模式适配 */
[data-bs-theme="dark"] .form-control {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

[data-bs-theme="dark"] .form-control:focus {
    background-color: var(--card-bg);
}

/* 表单控件在不同背景下的对比度 */
.bg-light .form-control,
.form-component.bg-light .form-control {
    background-color: #ffffff;
}

[data-bs-theme="dark"] .bg-light .form-control,
[data-bs-theme="dark"] .form-component.bg-light .form-control {
    background-color: var(--card-bg);
}