/* AWS 定价助手 - 现代化样式 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand h2 {
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

.nav-link.active {
    color: white;
    background: linear-gradient(45deg, #667eea, #764ba2);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: 2px solid #ddd;
    background: white;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.lang-btn:hover {
    border-color: #667eea;
    color: #667eea;
}

.lang-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

/* 主内容区 */
.main-content {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.section {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 仪表板 */
.dashboard-header {
    text-align: center;
    margin-bottom: 3rem;
    color: white;
}

.dashboard-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.dashboard-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(45deg, #667eea, #764ba2);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.stat-icon {
    font-size: 2rem;
    color: #667eea;
    margin-bottom: 1rem;
    display: block;
}

.stat-card h3 {
    color: #666;
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.quick-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.9);
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

/* 表单样式 */
.quote-form {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.quote-form h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: #333;
    font-size: 2rem;
    font-weight: 700;
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #555;
}

.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 报价结果 */
.quote-result {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.quote-result h3 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.cost-highlight {
    text-align: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border-radius: 15px;
    margin-bottom: 1.5rem;
    border: 2px solid rgba(102, 126, 234, 0.2);
}

.cost-highlight i {
    font-size: 2rem;
    color: #667eea;
    margin-bottom: 0.5rem;
    display: block;
}

.cost-highlight h4 {
    color: #667eea;
    font-size: 2rem;
    margin: 0;
    font-weight: 700;
}

.quote-info {
    display: grid;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.quote-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
    padding: 0.8rem;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 10px;
}

.quote-info i {
    color: #667eea;
    width: 20px;
}

.quote-breakdown {
    padding: 1.5rem;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 15px;
    border-left: 4px solid #667eea;
}

.quote-breakdown h5 {
    margin-bottom: 1rem;
    color: #333;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breakdown-items {
    display: grid;
    gap: 0.8rem;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.item-name {
    color: #555;
    font-weight: 500;
}

.item-cost {
    color: #667eea;
    font-weight: 700;
    font-size: 1.1rem;
}

/* 历史记录 */
.history-list {
    display: grid;
    gap: 1.5rem;
}

.history-list > p {
    text-align: center;
    color: white;
    font-size: 1.2rem;
    padding: 3rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.history-item {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.history-item:hover {
    transform: translateY(-3px);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.history-header h4 {
    color: #333;
    font-size: 1.2rem;
}

.history-date {
    color: #888;
    font-size: 0.9rem;
}

.history-requirements {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.history-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.history-cost {
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
}

.history-region {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .main-content {
        padding: 0 1rem;
    }
    
    .dashboard-header h1 {
        font-size: 2rem;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .quick-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .quote-form {
        padding: 2rem 1.5rem;
    }
    
    .history-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .history-details {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

/* 加载动画 */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading {
    animation: pulse 1.5s infinite;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(102, 126, 234, 0.5);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(102, 126, 234, 0.7);
}