/* ===== 基础样式和变量 ===== */
:root {
    /* 二次元配色方案 */
    --primary-pink: #ff69b4;
    --primary-purple: #8b5cf6;
    --primary-blue: #3b82f6;
    --soft-pink: #ffc0cb;
    --soft-purple: #ddd6fe;
    --soft-blue: #dbeafe;
    
    /* 渐变色 */
    --gradient-main: linear-gradient(135deg, #ff69b4, #8b5cf6, #3b82f6);
    --gradient-soft: linear-gradient(135deg, #ffc0cb, #ddd6fe, #dbeafe);
    --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    
    /* 阴影 */
    --shadow-soft: 0 8px 32px rgba(255, 105, 180, 0.15);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(255, 105, 180, 0.5);
    
    /* 字体 */
    --font-main: 'Poppins', 'Microsoft YaHei', sans-serif;
    
    /* 动画时长 */
    --transition-fast: 0.3s;
    --transition-normal: 0.5s;
    --transition-slow: 0.8s;

    /* 主题变量 */
    --bg-body: linear-gradient(135deg, #ffeef8, #f3e8ff, #eff6ff);
    --bg-section: rgba(255, 255, 255, 0.5);
    --bg-card: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    --bg-card-strong: rgba(255, 255, 255, 0.3);
    --bg-navbar: rgba(255, 255, 255, 0.95);
    --nav-border: rgba(255, 105, 180, 0.2);
    --text-main: #333;
    --text-secondary: #666;
    --text-muted: #999;
    --border-soft: rgba(255, 105, 180, 0.2);
    --input-bg: rgba(255, 255, 255, 0.5);
    --input-bg-focus: rgba(255, 255, 255, 0.8);
    --footer-bg: rgba(0, 0, 0, 0.05);
}

html[data-theme="dark"] {
    --bg-body: linear-gradient(135deg, #060816, #140d2b, #0f172a);
    --bg-section: rgba(15, 23, 42, 0.72);
    --bg-card: linear-gradient(145deg, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.65));
    --bg-card-strong: rgba(30, 41, 59, 0.8);
    --bg-navbar: rgba(15, 23, 42, 0.92);
    --nav-border: rgba(148, 163, 184, 0.25);
    --text-main: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-soft: rgba(148, 163, 184, 0.2);
    --input-bg: rgba(15, 23, 42, 0.75);
    --input-bg-focus: rgba(30, 41, 59, 0.95);
    --footer-bg: rgba(2, 6, 23, 0.8);
}

/* ===== 重置和基础样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-main);
    overflow-x: hidden;
    background: var(--bg-body);
    min-height: 100vh;
    transition: background var(--transition-normal) ease, color var(--transition-normal) ease;
}

html {
    scroll-behavior: smooth;
}

/* ===== 背景动画 ===== */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.floating-particles::before,
.floating-particles::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-main);
    opacity: 0.1;
    animation: floatParticles 20s infinite linear;
}

.floating-particles::before {
    width: 200px;
    height: 200px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-particles::after {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 10%;
    animation-delay: 10s;
}

@keyframes floatParticles {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.1;
    }
    25% {
        transform: translateY(-20px) rotate(90deg);
        opacity: 0.3;
    }
    50% {
        transform: translateY(-40px) rotate(180deg);
        opacity: 0.1;
    }
    75% {
        transform: translateY(-20px) rotate(270deg);
        opacity: 0.3;
    }
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--bg-navbar);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--nav-border);
    z-index: 1000;
    transition: all var(--transition-fast) ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow-card);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.5rem;
    background: var(--gradient-main);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.magic-star {
    animation: sparkle 2s infinite;
}

@keyframes sparkle {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.2) rotate(180deg); }
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 0.8rem;
    border: 1px solid var(--border-soft);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.45);
    color: var(--text-main);
    cursor: pointer;
    transition: all var(--transition-fast) ease;
}

html[data-theme="dark"] .theme-toggle {
    background: rgba(15, 23, 42, 0.7);
}

.theme-toggle:hover {
    transform: translateY(-1px) scale(1.02);
    box-shadow: var(--shadow-soft);
}

.theme-toggle-text {
    font-size: 0.95rem;
    font-weight: 600;
}

.theme-icon-dark {
    display: none;
}

html[data-theme="dark"] .theme-icon-dark {
    display: inline-block;
}

html[data-theme="dark"] .theme-icon-light {
    display: none;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-main);
    transition: width var(--transition-fast) ease;
}

.nav-link:hover {
    color: var(--primary-pink);
    transform: translateY(-2px) scale(1.02);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--primary-pink);
    margin: 3px 0;
    transition: var(--transition-fast);
    border-radius: 2px;
}

/* ===== 主页区域 ===== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 2rem 0;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.avatar-container {
    display: flex;
    justify-content: center;
    position: relative;
}

.avatar-frame {
    position: relative;
    width: 300px;
    height: 300px;
}

.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid rgba(255, 105, 180, 0.3);
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-normal) ease;
}

.avatar-image:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-soft);
}

.avatar-glow {
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: var(--gradient-main);
    border-radius: 50%;
    opacity: 0.2;
    animation: pulse 3s infinite;
    z-index: -1;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(0.95);
        opacity: 0.2;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.4;
    }
}

.hero-text {
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.greeting {
    display: block;
    font-size: 1.5rem;
    color: var(--primary-purple);
    margin-bottom: 0.5rem;
    font-weight: 400;
}

.name-text {
    display: block;
    font-weight: 700;
    background: var(--gradient-main);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.highlight-name {
    position: relative;
    display: inline-block;
}

.highlight-name::after {
    content: '✨';
    position: absolute;
    top: -10px;
    right: -20px;
    font-size: 1rem;
    animation: sparkle 2s infinite;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.typing-text {
    position: relative;
    overflow: hidden;
    border-right: 2px solid var(--primary-pink);
    white-space: nowrap;
    animation: typing 3s steps(20, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0 }
    to { width: 100% }
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--primary-pink) }
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-fast) ease, box-shadow var(--transition-fast) ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: var(--shadow-soft);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left var(--transition-normal) ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: var(--shadow-soft);
}

.btn-outline {
    background: transparent;
    color: var(--primary-pink);
    border: 2px solid var(--primary-pink);
}

.btn-outline:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: var(--shadow-soft);
}

/* ===== 浮动元素 ===== */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.floating-heart,
.floating-star,
.floating-cloud,
.floating-moon {
    position: absolute;
    font-size: 2rem;
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.floating-heart {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-star {
    top: 30%;
    right: 15%;
    animation-delay: 1s;
}

.floating-cloud {
    bottom: 30%;
    left: 15%;
    animation-delay: 2s;
}

.floating-moon {
    bottom: 20%;
    right: 10%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-10px) rotate(5deg);
    }
    50% {
        transform: translateY(-20px) rotate(10deg);
    }
    75% {
        transform: translateY(-10px) rotate(5deg);
    }
}

/* ===== 通用样式 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-main);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

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

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-soft);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal) ease;
}

.about-card:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-soft);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-purple);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.quote-card {
    min-height: 260px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.quote-marquee {
    min-height: 3rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
}

.quote-text {
    display: inline-block;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary-pink);
    white-space: pre-wrap;
    border-right: 2px solid var(--primary-pink);
    animation: quote-cursor 0.8s step-end infinite;
    overflow: hidden;
}

@keyframes quote-cursor {
    0%, 100% {
        border-color: transparent;
    }
    50% {
        border-color: var(--primary-pink);
    }
}

.quote-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--gradient-main);
    color: white;
    margin-bottom: 1rem;
}

.quote-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: auto;
}

.quote-tag {
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
    background: rgba(255, 105, 180, 0.12);
    color: var(--primary-pink);
    font-size: 0.9rem;
    font-weight: 600;
}

.quote-refresh {
    border: none;
    background: transparent;
    color: var(--primary-purple);
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.quote-refresh:hover {
    color: var(--primary-pink);
    transform: translateY(-1px);
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    background: var(--bg-card-strong);
    border-radius: 15px;
    transition: all var(--transition-fast) ease;
}

.stat-item:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-soft);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-pink);
    margin-bottom: 0.5rem;
}

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

.about-interests h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--primary-purple);
}

.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.interest-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-soft);
    border-radius: 15px;
    transition: all var(--transition-fast) ease;
    cursor: pointer;
}

.interest-item:hover {
    transform: translateY(-3px) scale(1.02);
    background: rgba(255, 105, 180, 0.05);
}

.interest-item i {
    font-size: 2rem;
    color: var(--primary-pink);
    transition: all var(--transition-fast) ease;
}

.interest-item:hover i {
    color: var(--primary-pink);
    transform: scale(1.05);
}

.interest-item span {
    font-weight: 500;
    color: var(--text-main);
}

/* ===== 联系我区域 ===== */
.contact-section {
    padding: 6rem 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-soft);
    border-radius: 15px;
    margin-bottom: 1rem;
    transition: all var(--transition-fast) ease;
}

.contact-item:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow: var(--shadow-soft);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.contact-details h4 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
    color: var(--primary-purple);
}

.contact-details p {
    color: var(--text-secondary);
}

.contact-form {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-soft);
    border-radius: 20px;
    padding: 2rem;
}

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

.form-input {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-soft);
    border-radius: 10px;
    background: var(--input-bg);
    color: var(--text-main);
    font-size: 1rem;
    transition: all var(--transition-fast) ease;
    resize: vertical;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-pink);
    background: var(--input-bg-focus);
    box-shadow: 0 0 0 3px rgba(255, 105, 180, 0.1);
}

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

/* ===== 页脚 ===== */
.footer {
    background: var(--footer-bg);
    padding: 2rem 0;
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-info {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-content p,
.footer-content a {
    color: var(--text-secondary);
}

.footer-content a {
    text-decoration: none;
    transition: color var(--transition-fast) ease;
}

.footer-content a:hover {
    color: var(--primary-pink);
}

.footer-icp {
    font-weight: 600;
}

.footer-content i.fas.fa-heart {
    color: var(--primary-pink);
    animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: var(--gradient-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all var(--transition-fast) ease;
}

.social-link:hover {
    transform: translateY(-2px) scale(1.04);
    box-shadow: var(--shadow-soft);
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--bg-navbar);
        backdrop-filter: blur(20px);
        width: 100%;
        text-align: center;
        transition: var(--transition-fast);
        box-shadow: var(--shadow-card);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

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

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .interests-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .floating-heart,
    .floating-star,
    .floating-cloud,
    .floating-moon {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 1rem;
    }

    .avatar-frame {
        width: 200px;
        height: 200px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

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

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

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

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

/* ===== 自定义滚动条 ===== */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--gradient-main);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-pink);
}

/* ===== 选择文本样式 ===== */
::selection {
    background: var(--soft-pink);
    color: var(--primary-purple);
}

/* ===== 加载动画样式 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow) ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}