/* 全局样式 */
:root {
    --green-primary: #4CAF50;
    --green-secondary: #8BC34A;
    --green-light: #E8F5E8;
    --green-dark: #388E3C;
    --green-gradient: linear-gradient(135deg, #4CAF50 0%, #8BC34A 100%);
    --green-gradient-dark: linear-gradient(135deg, #388E3C 0%, #4CAF50 100%);
    --green-gradient-light: linear-gradient(135deg, #E8F5E8 0%, #C8E6C9 100%);
    --text-dark: #333333;
    --text-light: #666666;
}

body {
    font-family: 'Arial', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
}

/* 绿色主题样式 */
.bg-green {
    background: var(--green-gradient) !important;
    background-size: 200% 200% !important;
    animation: gradientShift 3s ease infinite !important;
}

.text-green {
    color: var(--green-primary) !important;
}

.border-green {
    border-color: var(--green-primary) !important;
}

.btn-green {
    background: var(--green-gradient) !important;
    border-color: var(--green-primary) !important;
    color: white !important;
    background-size: 200% 200% !important;
    transition: all 0.3s ease !important;
    box-shadow: 0 4px 6px rgba(76, 175, 80, 0.3) !important;
}

.btn-green:hover {
    background: var(--green-gradient-dark) !important;
    border-color: var(--green-dark) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 12px rgba(76, 175, 80, 0.4) !important;
    background-position: right center !important;
}

.btn-outline-green {
    border-color: var(--green-primary) !important;
    color: var(--green-primary) !important;
    transition: all 0.3s ease !important;
}

.btn-outline-green:hover {
    background: var(--green-gradient) !important;
    color: white !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 6px rgba(76, 175, 80, 0.3) !important;
}

/* 导航栏样式 */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-nav .nav-link {
    color: var(--text-dark) !important;
    font-weight: 500;
    margin-left: 15px;
}

.navbar-nav .nav-link:hover {
    color: var(--green-primary) !important;
}

/* Banner样式 */
.carousel-caption {
    background: linear-gradient(135deg, rgba(0,0,0,0.7) 0%, rgba(76, 175, 80, 0.5) 100%);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.carousel-item:hover .carousel-caption {
    transform: translateY(0);
    background: linear-gradient(135deg, rgba(0,0,0,0.8) 0%, rgba(76, 175, 80, 0.7) 100%);
}

.carousel-caption h2 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.carousel-caption p {
    font-size: 1.2rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* 卡片样式 */
.card {
    transition: all 0.3s ease;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(76, 175, 80, 0.2);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--green-gradient);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(76, 175, 80, 0.2);
}

.card-header {
    position: relative;
    overflow: hidden;
}

.card-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--green-gradient);
    transition: left 0.3s ease;
}

.card:hover .card-header::before {
    left: 0;
}

.card-header h3 {
    position: relative;
    z-index: 1;
}

/* 价格样式 */
.price {
    font-size: 28px;
    font-weight: bold;
    background: var(--green-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    text-align: center;
    padding: 10px;
    border-radius: 8px;
    background-color: rgba(76, 175, 80, 0.1);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .carousel-caption h2 {
        font-size: 20px;
    }
    
    .carousel-caption p {
        font-size: 14px;
    }
    
    .card {
        margin-bottom: 20px;
    }
}

/* 表单样式 */
.form-control {
    transition: all 0.3s ease;
    border-radius: 8px;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.form-control:focus {
    border-color: var(--green-primary);
    box-shadow: 0 0 0 0.2rem rgba(76, 175, 80, 0.3);
    transform: translateY(-2px);
}

.form-label {
    font-weight: 500;
    color: var(--text-dark);
    transition: all 0.3s ease;
}

.form-control:focus + .form-label {
    color: var(--green-primary);
}

/* 页脚样式 */
footer {
    background: var(--green-gradient-dark);
    color: white;
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    box-shadow: 0 -4px 6px rgba(0,0,0,0.1);
}

footer a {
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

footer a:hover {
    text-decoration: underline;
    color: #E8F5E8;
}

/* 研学活动卡片样式 */
.study-card {
    height: 100%;
}

.study-card img {
    height: 200px;
    object-fit: cover;
}

/* 认养套餐卡片样式 */
.package-card {
    border: 2px solid var(--green-light);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.package-card:hover {
    border-color: var(--green-primary);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.1);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(76, 175, 80, 0.3);
    border-radius: 50%;
    border-top-color: var(--green-primary);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 消息提示样式 */
.alert-success {
    background-color: var(--green-light);
    border-color: var(--green-secondary);
    color: var(--green-dark);
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

/* 个人中心样式 */
.user-center {
    background: var(--green-gradient-light);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 16px rgba(76, 175, 80, 0.1);
    border: 1px solid rgba(76, 175, 80, 0.2);
}

.user-menu {
    background: white;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border: 1px solid rgba(76, 175, 80, 0.1);
}

.user-menu a {
    display: block;
    padding: 12px 16px;
    margin-bottom: 8px;
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.user-menu a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--green-gradient-light);
    transition: left 0.3s ease;
    z-index: 0;
}

.user-menu a:hover::before {
    left: 0;
}

.user-menu a:hover {
    color: var(--green-primary);
    transform: translateX(10px);
    box-shadow: 0 4px 8px rgba(76, 175, 80, 0.2);
}

.user-menu a.active {
    background: var(--green-gradient);
    color: white;
    box-shadow: 0 4px 8px rgba(76, 175, 80, 0.3);
}

.user-menu a span {
    position: relative;
    z-index: 1;
}

/* 订单列表样式 */
.order-list {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border: 1px solid rgba(76, 175, 80, 0.1);
}

.order-item {
    border-bottom: 1px solid rgba(76, 175, 80, 0.2);
    padding: 18px 0;
    transition: all 0.3s ease;
}

.order-item:hover {
    transform: translateX(5px);
    border-left: 4px solid var(--green-primary);
    padding-left: 10px;
}

.order-item:last-child {
    border-bottom: none;
}

/* 支付页面样式 */
.payment-method {
    background: white;
    border: 2px solid var(--green-light);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.payment-method::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--green-gradient-light);
    transition: left 0.3s ease;
    z-index: 0;
}

.payment-method:hover::before {
    left: 0;
}

.payment-method:hover {
    border-color: var(--green-primary);
    box-shadow: 0 8px 16px rgba(76, 175, 80, 0.2);
    transform: translateY(-3px);
}

.payment-method.active {
    border-color: var(--green-primary);
    background: var(--green-gradient-light);
    box-shadow: 0 8px 16px rgba(76, 175, 80, 0.3);
}

.payment-method .payment-content {
    position: relative;
    z-index: 1;
}

/* 二维码支付样式 */
.qr-code-container {
    text-align: center;
    padding: 40px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border: 1px solid rgba(76, 175, 80, 0.2);
    position: relative;
    overflow: hidden;
}

.qr-code-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--green-gradient);
}

.qr-code {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
}

/* 响应式导航 */
@media (max-width: 991px) {
    .navbar-nav {
        margin-top: 10px;
    }
    
    .navbar-nav .nav-link {
        margin-left: 0;
        padding: 10px 0;
    }
}

/* 移动端优化 */
@media (max-width: 576px) {
    h1 {
        font-size: 24px;
    }
    
    h2 {
        font-size: 20px;
    }
    
    h3 {
        font-size: 18px;
    }
    
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .card {
        margin-bottom: 15px;
    }
}