/* 
   Smarty Bubbles - Main Stylesheet
   Design: Responsive, colorful, with clear visual hierarchy
*/

/* ========== Base Styles ========== */
:root {
    /* Color variables */
    --primary-color: #4d6de3;    /* Primary: Blue */
    --secondary-color: #ff6b6b;  /* Secondary: Pink */
    --accent-color: #feca57;     /* Accent: Yellow */
    --dark-color: #2c3e50;       /* Dark: For text */
    --light-color: #f9f9f9;      /* Light: For backgrounds */
    --success-color: #26de81;    /* Green: For success states */
    --warning-color: #fd9644;    /* Orange: For warning states */
    --error-color: #fc5c65;      /* Red: For error states */
    --gradient-start: #4d6de3;   /* Gradient start color */
    --gradient-end: #7a96ff;     /* Gradient end color */
    
    /* Font variables */
    --heading-font: 'Poppins', sans-serif;
    --body-font: 'Open Sans', sans-serif;
    
    /* Spacing variables */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Border radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-normal: 0.5s ease;
    --transition-slow: 0.8s ease;
    
    /* Bubble colors */
    --bubble-color-1: rgba(255, 107, 107, 0.5);  /* Pink */
    --bubble-color-2: rgba(254, 202, 87, 0.5);   /* Yellow */
    --bubble-color-3: rgba(38, 222, 129, 0.5);   /* Green */
    --bubble-color-4: rgba(87, 101, 242, 0.5);   /* Blue */
    --bubble-color-5: rgba(153, 102, 255, 0.5);  /* Purple */
}

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

body {
    font-family: var(--body-font);
    color: var(--dark-color);
    line-height: 1.6;
    background-color: var(--light-color);
    overflow-x: hidden;
    position: relative;
}

/* Global bubble background */
.bubble-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
    pointer-events: none;
}

.bubble-bg .bubble {
    position: absolute;
    border-radius: 50%;
    opacity: 0.6;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    animation: bubbleFloat 20s linear infinite;
    bottom: -100px;
}

@keyframes bubbleFloat {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-1500px) rotate(360deg);
        opacity: 0;
    }
}

/* Background bubble variations */
.bubble-bg .bubble:nth-child(1) {
    width: 80px;
    height: 80px;
    left: 10%;
    background-color: var(--bubble-color-1);
    animation-delay: 0s;
    animation-duration: 21s;
}

.bubble-bg .bubble:nth-child(2) {
    width: 60px;
    height: 60px;
    left: 20%;
    background-color: var(--bubble-color-2);
    animation-delay: 2s;
    animation-duration: 18s;
}

.bubble-bg .bubble:nth-child(3) {
    width: 40px;
    height: 40px;
    left: 35%;
    background-color: var(--bubble-color-3);
    animation-delay: 4s;
    animation-duration: 25s;
}

.bubble-bg .bubble:nth-child(4) {
    width: 70px;
    height: 70px;
    left: 50%;
    background-color: var(--bubble-color-4);
    animation-delay: 6s;
    animation-duration: 22s;
}

.bubble-bg .bubble:nth-child(5) {
    width: 50px;
    height: 50px;
    left: 65%;
    background-color: var(--bubble-color-5);
    animation-delay: 8s;
    animation-duration: 19s;
}

.bubble-bg .bubble:nth-child(6) {
    width: 90px;
    height: 90px;
    left: 80%;
    background-color: var(--bubble-color-1);
    animation-delay: 10s;
    animation-duration: 24s;
}

.bubble-bg .bubble:nth-child(7) {
    width: 55px;
    height: 55px;
    left: 15%;
    background-color: var(--bubble-color-2);
    animation-delay: 5s;
    animation-duration: 20s;
}

.bubble-bg .bubble:nth-child(8) {
    width: 65px;
    height: 65px;
    left: 40%;
    background-color: var(--bubble-color-3);
    animation-delay: 7s;
    animation-duration: 23s;
}

.bubble-bg .bubble:nth-child(9) {
    width: 45px;
    height: 45px;
    left: 55%;
    background-color: var(--bubble-color-4);
    animation-delay: 9s;
    animation-duration: 17s;
}

.bubble-bg .bubble:nth-child(10) {
    width: 75px;
    height: 75px;
    left: 75%;
    background-color: var(--bubble-color-5);
    animation-delay: 11s;
    animation-duration: 26s;
}

.bubble-bg .bubble:nth-child(11) {
    width: 85px;
    height: 85px;
    left: 5%;
    background-color: var(--bubble-color-4);
    animation-delay: 13s;
    animation-duration: 22s;
}

.bubble-bg .bubble:nth-child(12) {
    width: 35px;
    height: 35px;
    left: 90%;
    background-color: var(--bubble-color-3);
    animation-delay: 15s;
    animation-duration: 18s;
}

/* ========== Content Styles ========== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: var(--spacing-md);
    position: relative;
}

h2:after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: var(--spacing-xs) auto;
    border-radius: var(--border-radius-sm);
}

h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
}

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

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

ul {
    list-style-position: inside;
    margin-bottom: var(--spacing-sm);
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) 0;
    position: relative;
    z-index: 2;
}

section {
    padding: var(--spacing-lg) 0;
    position: relative;
}

/* Translucent content background to improve readability */
.about-game, .game-tips, .reviews, .related-games {
    background-color: rgba(255, 255, 255, 0.85);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    margin: var(--spacing-md) 0;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.highlight {
    color: var(--secondary-color);
}

/* 部分标题添加泡泡图标 */
.section-title-bubble {
    display: inline-block;
    position: relative;
}

.section-title-bubble:before {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    background-color: var(--bubble-color-2);
    border-radius: 50%;
    margin-right: 10px;
    vertical-align: middle;
    animation: pulse 2s infinite;
}

.section-title-bubble:after {
    content: '';
    display: inline-block;
    width: 12px;
    height: 12px;
    background-color: var(--bubble-color-4);
    border-radius: 50%;
    margin-left: 10px;
    vertical-align: middle;
    animation: pulse 2s infinite 0.5s;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.2);
        opacity: 1;
    }
    100% {
        transform: scale(1);
        opacity: 0.7;
    }
}

/* 添加卡片悬浮效果 */
.game-card, .review-card {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.game-card:hover, .review-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

/* ========== 头部样式 ========== */
.header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-weight: bold;
}

.bubble-icon {
    font-size: 2rem;
    margin-right: var(--spacing-xs);
}

.logo h1 {
    font-size: 1.5rem;
    margin: 0;
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
}

.main-nav li {
    margin-left: var(--spacing-md);
}

.main-nav a {
    color: var(--dark-color);
    font-weight: 600;
    position: relative;
}

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

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

/* ========== 英雄区域样式 ========== */
.hero {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 600px;
    position: relative;
    z-index: 2;
}

.hero h2 {
    font-size: 3rem;
    color: white;
    margin-bottom: var(--spacing-sm);
    text-align: left;
}

.hero h2:after {
    display: none;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--dark-color);
    padding: 12px 30px;
    border-radius: var(--border-radius-md);
    font-weight: bold;
    text-transform: uppercase;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    color: var(--dark-color);
}

/* Bubble Decorations */
.bubble-decorations {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: 1;
}

.bubble {
    position: absolute;
    border-radius: 50%;
    opacity: 0.7;
    animation: float 8s infinite ease-in-out;
}

.b1 {
    width: 100px;
    height: 100px;
    background-color: rgba(255, 107, 107, 0.7);
    top: 20%;
    right: 10%;
    animation-delay: 0s;
}

.b2 {
    width: 70px;
    height: 70px;
    background-color: rgba(254, 202, 87, 0.7);
    top: 50%;
    right: 20%;
    animation-delay: 1s;
}

.b3 {
    width: 120px;
    height: 120px;
    background-color: rgba(38, 222, 129, 0.7);
    top: 30%;
    right: 35%;
    animation-delay: 2s;
}

.b4 {
    width: 50px;
    height: 50px;
    background-color: rgba(87, 101, 242, 0.7);
    top: 70%;
    right: 5%;
    animation-delay: 3s;
}

.b5 {
    width: 85px;
    height: 85px;
    background-color: rgba(153, 102, 255, 0.7);
    top: 60%;
    right: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ========== 游戏区域样式 ========== */
.game-section {
    background-color: white;
    padding: var(--spacing-lg) 0;
}

.game-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 75%; /* 4:3 纵横比 */
    background-color: #eee;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

#game-frame {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.9);
    z-index: 5;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(77, 109, 227, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-sm);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.game-controls {
    margin-top: var(--spacing-md);
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: 0.9rem;
    color: #666;
}

.game-controls p {
    display: flex;
    align-items: center;
}

.game-controls i {
    margin-right: 5px;
    color: var(--primary-color);
}

/* ========== 游戏介绍区域样式 ========== */
.about-game {
    background-color: var(--light-color);
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.game-info {
    flex: 2;
    min-width: 300px;
}

.game-features {
    flex: 1;
    min-width: 300px;
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.game-features ul {
    list-style: none;
}

.game-features li {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
}

.game-features i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 1.2rem;
}

/* ========== 游戏技巧区域样式 ========== */
.game-tips {
    background: linear-gradient(rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.9)), 
                url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="%234d6de3" opacity="0.1"/></svg>');
    background-size: 200px;
}

.tips-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.beginner-tips, .advanced-tips {
    flex: 1;
    min-width: 300px;
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.beginner-tips h3, .advanced-tips h3 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.beginner-tips ul, .advanced-tips ul {
    list-style: none;
}

.beginner-tips li, .advanced-tips li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.beginner-tips li:before, .advanced-tips li:before {
    content: '•';
    color: var(--secondary-color);
    position: absolute;
    left: 0;
    font-size: 1.5rem;
    line-height: 1;
}

/* ========== 用户评价区域样式 ========== */
.reviews {
    background-color: white;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.review-card {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-fast);
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.stars {
    color: var(--warning-color);
    margin-bottom: var(--spacing-xs);
    font-size: 1.2rem;
}

.reviewer {
    font-style: italic;
    text-align: right;
    margin-top: var(--spacing-xs);
    color: #666;
}

/* ========== Related Games Area Styles ========== */
.related-games {
    background-color: var(--light-color);
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.game-card {
    background: white;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-fast);
}

.game-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.game-preview {
    height: 150px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.game-preview:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    transition: background var(--transition-fast);
}

.game-card:hover .game-preview:before {
    background: rgba(0, 0, 0, 0.1);
}

.bubble-spinner {
    background: linear-gradient(135deg, #4d6de3, #26de81);
}

.bubble-woods {
    background: linear-gradient(135deg, #26de81, #feca57);
}

.bubble-charms {
    background: linear-gradient(135deg, #fc5c65, #fd9644);
}

.game-card h3 {
    padding: var(--spacing-sm) var(--spacing-sm) 0;
    font-size: 1.2rem;
}

.game-card p {
    padding: 0 var(--spacing-sm) var(--spacing-sm);
    font-size: 0.9rem;
    color: #666;
}

/* ========== Platform Information Area Styles ========== */
.platforms-info {
    background: linear-gradient(rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.9)), 
                url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="%234d6de3" opacity="0.1"/></svg>');
    background-size: 200px;
    padding: var(--spacing-lg) 0;
}

.platforms-intro {
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
}

.platform-card {
    background: white;
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.platform-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.platform-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
}

.platform-icon i {
    font-size: 1.8rem;
}

.platform-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.platform-card p {
    font-size: 0.9rem;
    color: #666;
}

.game-attribution {
    text-align: center;
    font-size: 0.85rem;
    color: #999;
    margin-bottom: var(--spacing-sm);
}

/* Add a new background class for game preview */
.bubble-classic {
    background: linear-gradient(135deg, #26de81, #4d6de3);
}

/* ========== 页脚样式 ========== */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.footer-logo h3 {
    color: white;
    margin: 0 0 0 var(--spacing-xs);
}

.footer-links ul {
    list-style: none;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: #ddd;
}

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

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    transition: background-color var(--transition-fast);
}

.footer-social a:hover {
    background-color: var(--primary-color);
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: #ddd;
}

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

/* ========== 响应式设计 ========== */
@media (max-width: 992px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .hero h2 {
        font-size: 2.5rem;
    }
    
    .bubble-decorations {
        width: 30%;
    }
    
    .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 1.6rem;
    }
    
    h3 {
        font-size: 1.3rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .main-nav ul {
        flex-direction: column;
        position: absolute;
        top: 100%;
        right: 0;
        background-color: white;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        padding: var(--spacing-md);
        border-radius: var(--border-radius-md);
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition-fast);
    }
    
    .main-nav.active ul {
        opacity: 1;
        pointer-events: all;
    }
    
    .main-nav li {
        margin: var(--spacing-xs) 0;
    }
    
    .bubble-decorations {
        display: none;
    }
    
    .game-controls {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-xs);
    }
    
    .footer-content > div {
        width: 100%;
        margin-bottom: var(--spacing-md);
    }
    
    .platforms-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .container {
        width: 95%;
    }
    
    section {
        padding: var(--spacing-md) 0;
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .cta-button {
        display: block;
        text-align: center;
    }
    
    .game-container {
        padding-bottom: 100%; /* 1:1 纵横比，在小屏幕上提供更大的可视区域 */
    }
    
    .review-card, .game-card {
        min-width: 100%;
    }
}