/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --border-color: #e5e7eb;
    --border-dark: #374151;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 1.5rem;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* 主要内容 */
.main-content {
    margin-top: 64px;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.cta-button {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.cta-button:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 区域标题 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

/* 转换器区域 */
.converter-section {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.converter-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.input-panel {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-select,
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-select:focus,
.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.fov-hint {
    margin-top: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.fov-hint i {
    color: var(--accent-color);
    font-size: 0.875rem;
}

.calculate-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.calculate-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.calculate-btn:disabled {
    background: var(--text-light);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* 结果面板 */
.result-panel {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.result-display {
    margin-bottom: 2rem;
}

.result-placeholder {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-light);
}

.result-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.result-content {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--secondary-color), #059669);
    color: white;
    border-radius: var(--radius-lg);
}

.result-sensitivity {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.result-edpi-info {
    margin-bottom: 1rem;
}

.edpi-comparison {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.edpi-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
}

.edpi-label {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: 0.25rem;
}

.edpi-value {
    font-size: 1.25rem;
    font-weight: 600;
    opacity: 0.9;
}

.result-info {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* 视觉化演示 */
.demo-area {
    margin-bottom: 2rem;
}

.demo-area h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.crosshair-demo {
    width: 200px;
    height: 200px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    position: relative;
    margin: 0 auto 1rem;
    background: var(--bg-secondary);
    overflow: hidden;
}

.crosshair {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    transition: all 0.3s ease;
}

.crosshair::before,
.crosshair::after {
    content: '';
    position: absolute;
    background: var(--primary-color);
}

.crosshair::before {
    width: 20px;
    height: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.crosshair::after {
    width: 2px;
    height: 20px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.crosshair.animating {
    transition: all 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.test-btn {
    width: 100%;
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.test-btn:hover:not(:disabled) {
    background: #d97706;
    transform: translateY(-1px);
}

.test-btn:disabled {
    background: var(--text-light);
    cursor: not-allowed;
}

/* 游戏风格推荐 */
.playstyle-recommendation {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
}

.playstyle-recommendation h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.playstyle-type {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.playstyle-details {
    margin-bottom: 1rem;
}

.playstyle-advantage,
.playstyle-disadvantage {
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.playstyle-advantage {
    color: var(--secondary-color);
}

.playstyle-disadvantage {
    color: #ef4444;
}

.playstyle-games {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 职业配置区域 */
.pro-configs-section {
    padding: 6rem 0;
}

.config-filters {
    margin-bottom: 2rem;
    text-align: center;
}

.filter-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: white;
    cursor: pointer;
}

.configs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.config-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
}

.config-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

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

.config-player {
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-primary);
}

.config-game {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.config-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.config-stat {
    text-align: center;
}

.config-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.config-stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 600;
}

.config-details {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.config-role {
    margin-bottom: 0.25rem;
}

.config-mouse {
    font-style: italic;
}

/* 关于区域 */
.about-section {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.about-text ul {
    list-style: none;
    padding: 0;
}

.about-text li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.about-text li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: 600;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.feature-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card h4 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-brand i {
    color: var(--primary-color);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-dark);
    color: var(--text-light);
    font-size: 0.875rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .converter-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .configs-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.5rem;
    }
    
    .hero {
        padding: 4rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .input-panel,
    .result-panel {
        padding: 1.5rem;
    }
    
    .result-sensitivity {
        font-size: 2rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* 加载状态 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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