/* CSS变量定义 */
:root {
    --primary-bg: #0a0a0f;
    --secondary-bg: #11111d;
    --card-bg: #1a1a2e;
    --card-hover: #16213e;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-pink: #ec4899;
    --accent-green: #10b981;
    --border-color: #2d3748;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s ease;
    --border-radius: 8px;
}

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

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

/* 背景效果 */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: center;
}

.glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.05) 50%, transparent 100%);
    filter: blur(100px);
    z-index: -1;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部 */
.header {
    position: sticky;
    top: 0;
    background-color: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo-text {
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

.nav-link.active {
    color: var(--accent-blue);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    border-radius: 1px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-box {
    position: relative;
}

.search-input {
    padding: 0.5rem 2rem 0.5rem 1rem;
    background-color: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    background-color: var(--card-bg);
}

.search-icon {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 主内容 */
.main {
    padding: 2rem 0;
    min-height: calc(100vh - 180px);
}

/* 英雄区域 */
.hero {
    text-align: center;
    padding: 4rem 0;
    margin-bottom: 3rem;
}

.hero-title {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple), var(--accent-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 工具分类 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.category-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition);
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-lg);
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.category-name {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.category-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* 工具容器 */
.tool-container {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.tool-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.tool-icon {
    font-size: 2rem;
}

.tool-title {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 表单控件 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    background-color: var(--card-bg);
}

.form-textarea {
    width: 100%;
    min-height: 150px;
    padding: 0.75rem 1rem;
    background-color: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    resize: vertical;
    transition: var(--transition);
}

.form-textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    background-color: var(--card-bg);
}

.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-select:focus {
    outline: none;
    border-color: var(--accent-blue);
    background-color: var(--card-bg);
}

/* 按钮 */
.tool-btn {
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border: none;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

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

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

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-bg), var(--card-bg));
    border: 1px solid var(--border-color);
}

.full-width {
    width: 100%;
    margin-right: 0;
}

/* 结果区域 */
.result-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.result-label {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.result-content {
    background-color: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    min-height: 80px;
    word-break: break-all;
    color: var(--text-primary);
}

/* 按钮组 */
.button-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

/* 选择组 */
.select-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

/* 统计信息 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-item {
    background-color: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

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

/* 页脚 */
.footer {
    background-color: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

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

.footer-logo-text {
    font-family: 'Orbitron', monospace;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.footer-link-title,
.footer-contact-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-link-list {
    list-style: none;
}

.footer-link-list li {
    margin-bottom: 0.5rem;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-link:hover {
    color: var(--accent-blue);
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    font-size: 1.5rem;
    color: var(--text-secondary);
    transition: var(--transition);
    text-decoration: none;
}

.social-icon:hover {
    color: var(--accent-blue);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-list {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .search-box {
        width: 100%;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .button-group {
        flex-direction: column;
    }

    .select-group {
        flex-direction: column;
        align-items: stretch;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-icons {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .category-title {
        font-size: 1.5rem;
    }

    .tool-card {
        padding: 1.5rem;
    }

    .question-text {
        font-size: 1.1rem;
    }
}

/* 工具通用样式 */
.tool-section {
    margin-bottom: 3rem;
}

.tool-subtitle {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tool-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* 日期时间工具样式 */
.datetime-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.datetime-tool {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

/* 编码解码工具样式 */
.encoding-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.encoding-tool {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

/* 单位转换工具样式 */
.converter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.converter-tool {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.conversion-row {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
}

.swap-btn {
    background: none;
    border: none;
    color: var(--accent-blue);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.swap-btn:hover {
    background-color: var(--secondary-bg);
}

/* 文本工具样式 */
.text-tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.text-tool {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

/* SBTI测试样式 */
.sbti-section {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.sbti-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

#sbti-question {
    text-align: left;
}

.question-number {
    display: inline-block;
    background-color: var(--secondary-bg);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-blue);
    margin-bottom: 1.5rem;
}

.question-text {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 2rem;
    line-height: 1.6;
    color: var(--text-primary);
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.option-btn {
    padding: 1rem 1.5rem;
    background-color: var(--secondary-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.option-btn:hover {
    background-color: var(--card-hover);
    border-color: var(--accent-blue);
    transform: translateX(5px);
}

.option-btn.selected {
    background-color: rgba(59, 130, 246, 0.2);
    border-color: var(--accent-blue);
}

#sbti-result {
    animation: fadeInUp 1s ease-out;
}

/* SBTI结果样式 */
.result-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.result-card {
    background-color: var(--secondary-bg);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.left-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.result-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.result-main-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.result-type {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-green);
    margin-bottom: 1.5rem;
    font-family: 'Orbitron', monospace;
}

.result-character {
    width: 120px;
    height: 120px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.character-placeholder {
    font-size: 4rem;
}

.result-catchphrase {
    font-size: 1rem;
    color: var(--text-secondary);
    font-style: italic;
}

.result-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-weight: 500;
    text-align: left;
}

.result-full-type {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: left;
    font-family: 'Orbitron', monospace;
}

.match-info {
    background-color: var(--primary-bg);
    padding: 0.75rem 1rem;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.match-percentage {
    color: var(--accent-green);
    font-weight: 600;
}

.match-details {
    color: var(--text-secondary);
    margin-left: 0.5rem;
}

.match-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    text-align: left;
}

.interpretation-card {
    text-align: left;
}

.interpretation-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.interpretation-content {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .result-container {
        grid-template-columns: 1fr;
    }
    
    .result-card {
        padding: 1.5rem;
    }
}