/* 基础布局样式 */
body {
    min-height: 100vh;
    background-color: #ffffff;
}

/* 深色主题覆盖 */
body.dark-theme {
    background-color: #1a1a1a !important;
}

.container {
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}

.main-content {
    padding: 2rem 0;
    flex: 1 0 auto;
    background-color: #ffffff;
    color: #4a3c35;
}

/* 深色主题覆盖 */
body.dark-theme .main-content {
    background-color: #1a1a1a !important;
    color: #e0e0e0 !important;
}

/* 内容区域的文本样式 */
.main-content h1, 
.main-content h2, 
.main-content h3, 
.main-content h4, 
.main-content h5, 
.main-content h6 {
    color: #4a3c35;
}

body.dark-theme .main-content h1,
body.dark-theme .main-content h2,
body.dark-theme .main-content h3,
body.dark-theme .main-content h4,
body.dark-theme .main-content h5,
body.dark-theme .main-content h6 {
    color: #e0e0e0 !important;
}

.main-content p {
    color: #4a3c35;
}

body.dark-theme .main-content p {
    color: #bbb !important;
}

.main-content a {
    color: #3498db;
    text-decoration: none;
}

body.dark-theme .main-content a {
    color: #1e88e5 !important;
}

.main-content a:hover {
    color: #2980b9;
}

body.dark-theme .main-content a:hover {
    color: #42a5f5 !important;
}

/* 响应式布局 */
@media (min-width: 576px) {
    .container {
        max-width: 540px;
    }
}

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

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

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

/* 调整导航栏和内容之间的间距 */
.navbar {
  margin-bottom: 0;
  border-bottom: 1px solid #eee;
}

main {
  margin-top: 0; /* 完全移除上边距 */
}

/* 移除其他可能影响间距的样式 */


/* 主题切换按钮样式 */
.theme-toggle {
    background: #fd7e14 !important;  /* 保持橙色背景 */
    border: none !important;
    padding: 6px !important;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    width: 32px;
    height: 32px;
}

.theme-toggle i {
    font-size: 1.1rem;
    color: white !important;  /* 图标颜色设置为白色 */
    transition: transform 0.3s ease;
}

.theme-toggle:hover {
    opacity: 0.9;
    transform: scale(1.05);
}

/* Logo 样式 */
.logo-container {
    text-align: center;
    padding: 1.5rem 0;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #ffffff;
}

.main-logo {
    display: inline-block;
    text-align: center;
}

.main-logo img {
    height: 120px;
    width: auto;
    display: block;
    margin: 0 auto;
}

/* 默认（浅色模式）下的 logo 显示规则 */
.logo-light {
    display: block !important;
}

.logo-dark {
    display: none !important;
}

/* 移动端导航栏 logo */
.navbar-logo {
    display: none;
}

@media (max-width: 991.98px) {
    .navbar-logo {
        display: block;
    }
    
    .logo-container {
        display: none;
    }
}

/* 消息提示样式 */
.alert {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1050;
    min-width: 300px;
    max-width: 90%;
    border: none;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 1rem 2.5rem 1rem 1.5rem;
    margin: 0;
    font-size: 0.95rem;
    animation: slideDown 0.3s ease-out;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-left: 4px solid #28a745;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border-left: 4px solid #17a2b8;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border-left: 4px solid #ffc107;
}

.alert-error,
.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.alert .btn-close {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.5rem;
    background: transparent;
    border: none;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.alert .btn-close:hover {
    opacity: 1;
}
.message-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    min-width: 300px;
}

.alert {
    margin-bottom: 10px;
    padding: 15px;
    border-radius: 4px;
    animation: slideIn 0.5s ease-out;
}

.alert-dismissible {
    padding-right: 35px;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.fade-out {
    animation: fadeOut 0.5s ease-out forwards;
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}
/* 消息提示动画 */
@keyframes slideDown {
    from {
        transform: translate(-50%, -100%);
        opacity: 0;
    }
    to {
        transform: translate(-50%, 0);
        opacity: 1;
    }
}

/* 深色模式适配 */
[data-bs-theme="dark"] .alert {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

[data-bs-theme="dark"] .alert-success {
    background-color: #1e462c;
    color: #d4edda;
}

[data-bs-theme="dark"] .alert-info {
    background-color: #0c3c48;
    color: #d1ecf1;
}

[data-bs-theme="dark"] .alert-warning {
    background-color: #533f03;
    color: #fff3cd;
}

[data-bs-theme="dark"] .alert-error,
[data-bs-theme="dark"] .alert-danger {
    background-color: #4c161b;
    color: #f8d7da;
}