/* Global Variables */
:root {
    --primary-color: #3a86ff;
    --secondary-color: #8338ec;
    --accent-color: #ff006e;
    --text-color: #333;
    --light-text: #fff;
    --bg-color: #f8f9fa;
    --card-bg: #fff;
    --border-color: #e0e0e0;
    --success-color: #38b000;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --border-radius: 10px;
    --transition: all 0.3s ease;
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

/* Dark Theme Variables */
.dark-theme {
    --primary-color: #4361ee;
    --secondary-color: #7209b7;
    --accent-color: #f72585;
    --text-color: #f0f0f0;
    --light-text: #f0f0f0;
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --border-color: #333;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

ul {
    list-style: none;
}

/* Typography */
h1, h2, h3 {
    margin-bottom: 1rem;
    line-height: 1.3;
    font-weight: 700;
}

h1 {
    font-size: 3rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-align: center;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.2rem;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

p {
    margin-bottom: 1.5rem;
}

/* Header & Navigation */
header {
    background-color: var(--card-bg);
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 2rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-color);
}

nav ul {
    display: flex;
    gap: 2rem;
}

nav ul li a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: var(--transition);
}

nav ul li a:hover::after,
nav ul li a:focus::after {
    width: 100%;
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px;
    border-radius: 50%;
    transition: var(--transition);
}

.theme-toggle:hover {
    background-color: var(--border-color);
}

.dark-icon {
    display: none;
}

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

.dark-theme .dark-icon {
    display: block;
}

/* Hero Section */
.hero {
    padding: 5rem 0 3rem;
    text-align: center;
    background: var(--bg-color);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(58, 134, 255, 0.1), rgba(131, 56, 236, 0.1));
    z-index: -1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 0, 110, 0.1), rgba(131, 56, 236, 0.1));
    z-index: -1;
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
    color: var(--text-color);
    opacity: 0.8;
}

/* Calculator Section */
.calculator-section {
    padding: 4rem 0;
    background-color: var(--bg-color);
}

.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    padding: 12px 24px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    color: var(--text-color);
    transition: var(--transition);
}

.tab-btn:hover {
    background-color: rgba(var(--primary-color-rgb), 0.1);
}

.tab-btn.active {
    background-color: var(--primary-color);
    color: var(--light-text);
    border-color: var(--primary-color);
}

.tab-content {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.calculator-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
}

input[type="date"],
input[type="number"] {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: var(--transition);
}

input[type="date"]:focus,
input[type="number"]:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(58, 134, 255, 0.2);
}

.button-group {
    display: flex;
    gap: 1rem;
}

.calculate-btn {
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: var(--light-text);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.calculate-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.result {
    background-color: var(--bg-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    border-left: 4px solid var(--success-color);
    margin-top: 1rem;
    display: none;
}

.result.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Guide Section */
.guide-section {
    padding: 4rem 0;
    background-color: var(--card-bg);
}

.guide-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.guide-item {
    padding: 2rem;
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.guide-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

/* FAQ Section */
.faq-section {
    padding: 4rem 0;
    background-color: var(--bg-color);
}

.accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.accordion-item {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.accordion-header {
    padding: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.accordion-header:hover {
    color: var(--primary-color);
}

.accordion-header::after {
    content: '+';
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    transition: var(--transition);
}

.accordion-item.active .accordion-header::after {
    content: '-';
}

.accordion-content {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-item.active .accordion-content {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}

/* Recommendations Section */
.recommendations-section {
    padding: 4rem 0;
    background-color: var(--card-bg);
}

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

.site-card {
    padding: 2rem;
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

.site-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

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

.site-link {
    display: inline-block;
    margin-top: 1rem;
    padding: 8px 16px;
    background-color: var(--primary-color);
    color: var(--light-text);
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

.site-link:hover {
    background-color: var(--secondary-color);
    color: var(--light-text);
}

/* Footer */
footer {
    background-color: var(--card-bg);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-column h3 {
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-column ul li a {
    color: var(--text-color);
    opacity: 0.7;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    text-align: center;
    color: var(--text-color);
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2.2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    nav {
        flex-direction: column;
        padding: 1rem;
    }
    
    nav ul {
        margin: 1rem 0;
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .button-group {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .tabs {
        flex-direction: column;
    }
    
    .tab-content {
        padding: 1.5rem;
    }
    
    .calculator-form {
        gap: 1rem;
    }
    
    .guide-content,
    .site-cards {
        grid-template-columns: 1fr;
    }
}
/* 新增的情感连接和意义层元素样式 */
.hero-cta {
    margin-top: 30px;
}

.cta-button {
    display: inline-block;
    padding: 12px 28px;
    background-color: var(--accent-color);
    color: white;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(var(--accent-color-rgb), 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(var(--accent-color-rgb), 0.4);
}

.section-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 40px;
    color: var(--text-secondary);
    font-size: 1.1em;
    line-height: 1.6;
}

/* 意义层元素样式 */
.meaning-prompt {
    background-color: rgba(var(--accent-color-rgb), 0.1);
    border-left: 4px solid var(--accent-color);
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 0 4px 4px 0;
    font-style: italic;
}

.moment-label {
    margin-top: 8px;
}

.moment-label input {
    width: 100%;
    padding: 8px;
    border: 1px dashed var(--border-color);
    border-radius: 4px;
    font-size: 0.9em;
    background-color: rgba(var(--bg-color-rgb), 0.5);
}

.meaning-reflection {
    margin-top: 20px;
    padding: 15px;
    background-color: rgba(var(--accent-color-rgb), 0.05);
    border-radius: 8px;
    font-style: italic;
    display: none; /* Will be shown via JavaScript when there's content */
}

.share-moment {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.share-btn, .memory-btn {
    padding: 8px 15px;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9em;
    transition: all 0.3s ease;
}

.share-btn {
    background-color: #3b5998;
    color: white;
}

.memory-btn {
    background-color: var(--accent-color);
    color: white;
}

.share-btn:hover, .memory-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 时间单位和里程碑类型选择器 */
#timeUnit {
    margin-left: 10px;
    padding: 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.milestone-type {
    margin-top: 15px;
    margin-bottom: 15px;
}

.milestone-type select {
    margin-left: 10px;
    padding: 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    width: 200px;
}

.milestone-reminder {
    margin-top: 20px;
    display: flex;
    align-items: center;
}

.milestone-reminder input {
    margin-right: 10px;
}

/* 生命里程碑选项 */
.life-milestones {
    margin-top: 20px;
    background-color: rgba(var(--bg-color-rgb), 0.5);
    padding: 15px;
    border-radius: 8px;
}

.milestone-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-top: 10px;
}

.milestone-options label {
    display: flex;
    align-items: center;
}

.milestone-options input {
    margin-right: 8px;
}

/* 生命可视化 */
.life-visualization {
    margin-top: 30px;
    min-height: 100px;
}

/* Life Moments Section */
.life-moments-section {
    padding: 60px 0;
    background-color: rgba(var(--bg-color-rgb), 0.8);
}

.moments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.moment-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.moment-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.moment-icon {
    font-size: 2.5em;
    margin-bottom: 15px;
}

/* 继续之前的CSS代码 */

.moment-template {
    margin-top: 20px;
    padding: 10px 20px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.moment-template:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

/* 社区故事部分 */
.community-stories {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.story-carousel {
    margin-top: 25px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.story-item {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.story-item blockquote {
    font-style: italic;
    margin: 0 0 15px 0;
    padding-left: 15px;
    border-left: 3px solid var(--accent-color);
}

.story-item cite {
    display: block;
    text-align: right;
    font-weight: 500;
    color: var(--text-secondary);
}

/* 指南部分增强 */
.guide-example {
    margin-top: 15px;
    padding: 15px;
    background-color: rgba(var(--accent-color-rgb), 0.05);
    border-radius: 8px;
    font-style: italic;
}

/* FAQ部分增强 */
.accordion-item {
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.accordion-header {
    padding: 18px 20px;
    background-color: var(--card-bg);
    cursor: pointer;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-header::after {
    content: '+';
    font-size: 1.5em;
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-header::after {
    content: '−';
}

.accordion-content {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    background-color: var(--bg-color);
}

.accordion-item.active .accordion-content {
    padding: 20px;
    max-height: 1000px;
}

.accordion-content ul {
    margin-top: 10px;
    padding-left: 20px;
}

.accordion-content li {
    margin-bottom: 8px;
}

/* 推荐资源部分增强 */
.site-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.site-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.site-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.site-icon {
    font-size: 2.5em;
    margin-bottom: 15px;
    text-align: center;
}

.site-card h3 {
    margin-bottom: 10px;
}

.site-card p {
    flex-grow: 1;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.site-link {
    display: inline-block;
    padding: 8px 20px;
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.site-link:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

/* 书籍推荐部分 */
.inspiration-books {
    margin-top: 50px;
}

.book-carousel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    margin-top: 25px;
}

.book-item {
    text-align: center;
    padding: 20px;
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.book-item:hover {
    transform: translateY(-5px);
}

.book-cover {
    font-size: 3em;
    margin-bottom: 15px;
}

.book-item h4 {
    margin-bottom: 8px;
}

.book-item p {
    color: var(--text-secondary);
    font-size: 0.9em;
}

/* CTA部分 */
.cta-section {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    padding: 60px 0;
    text-align: center;
    margin-top: 60px;
    
}

.cta-section h2 {
    margin-bottom: 15px;
}

.cta-section p {
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section .cta-button {
    background-color: white;
    color: var(--accent-color);
}

.cta-section .cta-button:hover {
    background-color: rgba(255,255,255,0.9);
}

/* 页脚增强 */
.footer-quote {
    margin-top: 20px;
    font-style: italic;
    padding-left: 15px;
    border-left: 3px solid var(--accent-color);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .moments-grid,
    .story-carousel,
    .site-cards,
    .book-carousel {
        grid-template-columns: 1fr;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
        margin-bottom: 5px;
    }
    
    .meaning-prompt {
        font-size: 0.9em;
    }
    
    .share-moment {
        flex-direction: column;
        gap: 10px;
    }
    
    .milestone-options {
        grid-template-columns: 1fr;
    }
}

/* 日期标签输入框动画 */
.moment-label input:focus {
    border-style: solid;
    border-color: var(--accent-color);
    outline: none;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(var(--accent-color-rgb), 0.4);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(var(--accent-color-rgb), 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(var(--accent-color-rgb), 0);
    }
}

/* 日历图标 */
.form-group label {
    display: flex;
    align-items: center;
}

.form-group label::before {
    content: '📅';
    margin-right: 8px;
    font-size: 1.2em;
}

/* 生命可视化样式 */
.life-visualization {
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
    margin-top: 20px;
}

.life-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #ddd;
    transition: background-color 0.5s ease;
}

.life-dot.lived {
    background-color: var(--accent-color);
}

.day-significance {
    margin-top: 15px;
    padding: 15px;
    background-color: rgba(var(--accent-color-rgb), 0.05);
    border-radius: 8px;
}

.historical-context {
    margin-top: 15px;
    font-size: 0.9em;
    color: var(--text-secondary);
}
/* 通知样式 */
.notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--success-color);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transform: translateY(100px);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.notification.show {
    transform: translateY(0);
    opacity: 1;
}