/* 移动端优先 - CDKey兑换中心样式 */

/* 基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 - Montfort风格配色 */
    --primary-color: #1a1a1a;
    --secondary-color: #333333;
    --accent-color: #0066cc;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --error-color: #e74c3c;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #999999;
    --background-primary: #ffffff;
    --background-secondary: #f8f9fa;
    --border-color: #e5e5e5;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    
    /* 字体 */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* 间距 - 优化为更紧凑的布局 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.25rem;
    --spacing-xxl: 1.5rem;
    
    /* 圆角 */
    --border-radius-sm: 6px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* 基础样式 */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 主容器 */
.main-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部区域 - 减小高度 */
.header {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: var(--spacing-lg) var(--spacing-sm);
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    min-height: 140px;
}

/* 动态背景 */
.header-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

/* 背景形状 - 减小尺寸 */
.bg-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(45deg, rgba(0, 102, 204, 0.1), rgba(0, 82, 163, 0.05));
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 60px;
    height: 60px;
    top: 60%;
    right: 15%;
    animation-delay: -5s;
}

.shape-3 {
    width: 70px;
    height: 70px;
    bottom: 20%;
    left: 20%;
    animation-delay: -10s;
}

.shape-4 {
    width: 40px;
    height: 40px;
    top: 30%;
    right: 30%;
    animation-delay: -15s;
}

.shape-5 {
    width: 60px;
    height: 60px;
    bottom: 40%;
    right: 10%;
    animation-delay: -7s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.3;
    }
    25% {
        transform: translateY(-20px) rotate(90deg);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-10px) rotate(180deg);
        opacity: 0.4;
    }
    75% {
        transform: translateY(-30px) rotate(270deg);
        opacity: 0.7;
    }
}

/* 浮动粒子 - 减小尺寸 */
.particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: rgba(0, 102, 204, 0.6);
    border-radius: 50%;
    animation: particle-float 15s infinite linear;
}

.particle:nth-child(1) {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
    animation-duration: 20s;
}

.particle:nth-child(2) {
    top: 40%;
    right: 25%;
    animation-delay: -3s;
    animation-duration: 18s;
}

.particle:nth-child(3) {
    bottom: 30%;
    left: 30%;
    animation-delay: -6s;
    animation-duration: 22s;
}

.particle:nth-child(4) {
    top: 70%;
    right: 40%;
    animation-delay: -9s;
    animation-duration: 16s;
}

.particle:nth-child(5) {
    bottom: 60%;
    left: 50%;
    animation-delay: -12s;
    animation-duration: 19s;
}

.particle:nth-child(6) {
    top: 10%;
    right: 60%;
    animation-delay: -15s;
    animation-duration: 21s;
}

.particle:nth-child(7) {
    bottom: 10%;
    right: 20%;
    animation-delay: -18s;
    animation-duration: 17s;
}

.particle:nth-child(8) {
    top: 50%;
    left: 60%;
    animation-delay: -21s;
    animation-duration: 23s;
}

@keyframes particle-float {
    0% {
        transform: translateY(0px) translateX(0px);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0;
    }
}

.header-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--accent-color), #0052a3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0, 102, 204, 0.3);
    animation: logo-pulse 3s ease-in-out infinite;
}

.logo-icon i {
    font-size: 2.5rem;
    color: white;
}

@keyframes logo-pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 8px 32px rgba(0, 102, 204, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 12px 40px rgba(0, 102, 204, 0.4);
    }
}

.logo-text h1 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: white;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.logo-text p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: var(--font-weight-medium);
    letter-spacing: 1px;
}

/* 主要内容区域 - 减小边距 */
.main-content {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-sm);
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

/* 兑换表单卡片 - 减小内边距 */
.exchange-card {
    background: var(--background-secondary);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-light);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

/* 表单样式 - 减小间距 */
.exchange-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: var(--spacing-md);
    color: var(--text-light);
    font-size: 1.1rem;
    z-index: 1;
}

.form-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--background-secondary);
    color: var(--text-primary);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-input::placeholder {
    color: var(--text-light);
}

/* 下拉框样式 */
.select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.select-wrapper i {
    position: absolute;
    left: var(--spacing-md);
    color: var(--text-light);
    font-size: 1.1rem;
    z-index: 1;
}

.form-select {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--background-secondary);
    color: var(--text-primary);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    background-size: 16px;
    padding-right: 3rem;
}

.form-select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-select:hover {
    border-color: var(--accent-color);
}

.form-select option {
    background: var(--background-secondary);
    color: var(--text-primary);
    padding: var(--spacing-sm);
}

/* 提交按钮 - 减小内边距 */
.submit-btn {
    background: linear-gradient(135deg, var(--accent-color), #0052a3);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-light);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.submit-btn:active {
    transform: translateY(0);
}

.btn-icon {
    transition: var(--transition-fast);
}

.submit-btn:hover .btn-icon {
    transform: translateX(5px);
}

/* 兑换规则 - 减小内边距 */
.exchange-rules {
    background: var(--background-primary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    border-left: 4px solid var(--accent-color);
}

.exchange-rules h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.exchange-rules h3 i {
    color: var(--accent-color);
}

.exchange-rules ul {
    list-style: none;
    padding-left: 0;
}

.exchange-rules li {
    position: relative;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.4;
}

.exchange-rules li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* 成功提示卡片 - 减小内边距 */
.success-card {
    background: var(--background-secondary);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-light);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--success-color);
    text-align: center;
    animation: slideInUp 0.5s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.success-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--success-color), #229954);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    box-shadow: var(--shadow-medium);
}

.success-icon i {
    font-size: 2.5rem;
    color: white;
}

.success-card h2 {
    font-size: 1.6rem;
    font-weight: var(--font-weight-bold);
    color: var(--success-color);
    margin-bottom: var(--spacing-md);
}

.success-content {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

.close-btn {
    background: var(--text-light);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.close-btn:hover {
    background: var(--text-secondary);
}

/* 用户信息卡片 - 减小内边距 */
.user-card {
    background: var(--background-secondary);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-light);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.user-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.user-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-color), #0052a3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-avatar i {
    font-size: 1.5rem;
    color: white;
}

.user-info h3 {
    font-size: 1.2rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.user-info p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.user-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.stat {
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--background-primary);
    border-radius: var(--border-radius-md);
}

.stat-number {
    display: block;
    font-size: 1.3rem;
    font-weight: var(--font-weight-bold);
    color: var(--accent-color);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.exchange-history h4 {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.history-list {
    max-height: 250px;
    overflow-y: auto;
}

/* 底部信息 - 减小内边距 */
.footer {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-lg) var(--spacing-sm);
    margin-top: auto;
}

.footer-text {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.footer-text p {
    margin-bottom: var(--spacing-xs);
    font-size: 0.8rem;
    line-height: 1.4;
    color: #ccc;
}

.footer-copyright {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid #333;
}

.footer-copyright p {
    margin-bottom: var(--spacing-xs);
    font-size: 0.75rem;
    color: #999;
}

/* 加载动画 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

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

.spinner-ring {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-sm);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.spinner-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* 提示消息 */
.toast-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    max-width: 90%;
}

.toast {
    background: var(--background-secondary);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-medium);
    margin-bottom: var(--spacing-sm);
    border-left: 4px solid var(--accent-color);
    animation: slideInDown 0.3s ease-out;
    font-size: 0.85rem;
    line-height: 1.4;
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.error {
    border-left-color: var(--error-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 480px) {
    .header {
        padding: var(--spacing-md) var(--spacing-sm);
        min-height: 120px;
    }
    
    .logo-icon {
        width: 60px;
        height: 60px;
    }
    
    .logo-icon i {
        font-size: 2rem;
    }
    
    .logo-text h1 {
        font-size: 1.8rem;
    }
    
    .logo-text p {
        font-size: 0.9rem;
    }
    
    .main-content {
        padding: var(--spacing-sm);
    }
    
    .exchange-card {
        padding: var(--spacing-md);
    }
    
    .form-input,
    .form-select {
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    .submit-btn {
        padding: var(--spacing-md);
        font-size: 1rem;
    }
    
    .shape {
        opacity: 0.2;
    }
    
    .particle {
        opacity: 0.4;
    }
}

@media (max-width: 360px) {
    .header {
        min-height: 100px;
    }
    
    .logo-icon {
        width: 50px;
        height: 50px;
    }
    
    .logo-icon i {
        font-size: 1.8rem;
    }
    
    .logo-text h1 {
        font-size: 1.6rem;
    }
    
    .exchange-card {
        padding: var(--spacing-sm);
    }
    
    .exchange-rules li {
        font-size: 0.8rem;
    }
}

/* 横屏适配 */
@media (orientation: landscape) and (max-height: 500px) {
    .header {
        padding: var(--spacing-sm) var(--spacing-sm);
        min-height: 100px;
    }
    
    .logo-icon {
        width: 50px;
        height: 50px;
    }
    
    .logo-icon i {
        font-size: 1.8rem;
    }
    
    .logo-text h1 {
        font-size: 1.6rem;
    }
    
    .main-content {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .exchange-card {
        padding: var(--spacing-md);
    }
    
    .exchange-form {
        gap: var(--spacing-sm);
    }
}

/* 高分辨率屏幕 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .form-input,
    .form-select {
        border-width: 1px;
    }
    
    .submit-btn {
        border-width: 1px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .submit-btn:hover {
        transform: none;
    }
    
    .submit-btn:active {
        transform: scale(0.98);
    }
    
    .form-input:focus,
    .form-select:focus {
        box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.2);
    }
}

/* ==================== 兑换成功弹窗样式 ==================== */

/* 弹窗容器 */
.success-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: var(--spacing-sm);
}

/* 弹窗遮罩层 */
.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* 弹窗内容 */
.modal-content {
    position: relative;
    background: var(--background-primary);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    width: 100%;
    max-width: 400px;
    animation: modalSlideIn 0.5s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 弹窗头部 */
.modal-header {
    background: linear-gradient(135deg, var(--success-color), #2ecc71);
    color: white;
    padding: var(--spacing-xl);
    text-align: center;
    position: relative;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.success-icon i {
    font-size: 2.5rem;
    color: white;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.modal-close i {
    font-size: 1rem;
}

/* 弹窗主体 */
.modal-body {
    padding: var(--spacing-xl);
}

/* 奖励信息 */
.reward-info {
    margin-bottom: var(--spacing-xl);
}

.reward-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.reward-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), #0056b3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.reward-icon i {
    font-size: 1.8rem;
    color: white;
}

.reward-text h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    margin: 0 0 var(--spacing-sm) 0;
}

.reward-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.4;
}

/* 兑换详情 */
.exchange-details {
    margin-bottom: var(--spacing-xl);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}

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

.detail-item i {
    width: 20px;
    color: var(--accent-color);
    text-align: center;
}

.detail-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    min-width: 80px;
}

.detail-value {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    font-size: 0.9rem;
}

/* 成功消息 */
.success-message {
    background: rgba(39, 174, 96, 0.1);
    border: 1px solid rgba(39, 174, 96, 0.2);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.success-message i {
    color: var(--success-color);
    font-size: 1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.success-message p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
    line-height: 1.4;
}

/* 弹窗底部 */
.modal-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--background-secondary);
    border-top: 1px solid var(--border-color);
}

.btn-confirm {
    width: 100%;
    background: linear-gradient(135deg, var(--accent-color), #0056b3);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn-confirm:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.3);
}

.btn-confirm i {
    font-size: 0.9rem;
}

/* 弹窗响应式设计 */
@media (max-width: 480px) {
    .modal-content {
        max-width: 95vw;
        margin: var(--spacing-sm);
    }
    
    .modal-header {
        padding: var(--spacing-lg);
    }
    
    .success-icon {
        width: 60px;
        height: 60px;
    }
    
    .success-icon i {
        font-size: 2rem;
    }
    
    .modal-title {
        font-size: 1.3rem;
    }
    
    .modal-body {
        padding: var(--spacing-lg);
    }
    
    .reward-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .reward-icon {
        width: 50px;
        height: 50px;
    }
    
    .reward-icon i {
        font-size: 1.5rem;
    }
    
    .exchange-details {
        margin-bottom: var(--spacing-lg);
    }
    
    .detail-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .detail-label {
        min-width: auto;
        font-weight: var(--font-weight-medium);
    }
}

/* 弹窗动画优化 */
@media (prefers-reduced-motion: reduce) {
    .modal-content {
        animation: none;
    }
    
    .success-icon,
    .reward-content,
    .exchange-details,
    .success-message,
    .btn-confirm {
        animation: none;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .modal-content {
        background: #1a1a1a;
        color: #ffffff;
    }
    
    .modal-body {
        background: #1a1a1a;
    }
    
    .reward-content {
        background: linear-gradient(135deg, #2a2a2a, #333333);
        border-color: #444444;
    }
    
    .success-message {
        background: rgba(39, 174, 96, 0.15);
        border-color: rgba(39, 174, 96, 0.3);
    }
    
    .modal-footer {
        background: #2a2a2a;
        border-top-color: #444444;
    }
    
    .detail-item {
        border-bottom-color: #444444;
    }
}