/* 春节主题样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'KaiTi', 'STKaiti', 'Georgia', 'Times New Roman', serif;
    background: linear-gradient(135deg, #8B0000 0%, #DC143C 25%, #B22222 50%, #8B0000 75%, #660000 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 半透明遮罩层 - 金色祥云纹理效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 80%, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(139, 0, 0, 0.2) 0%, transparent 70%);
    z-index: -1;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

/* 烟花/红包容器 */
#fireworkContainer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.falling-element {
    position: absolute;
    user-select: none;
    pointer-events: none;
    animation: floatDown linear infinite;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.8);
}

@keyframes floatDown {
    from {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }
    to {
        transform: translateY(calc(100vh + 100px)) rotate(360deg);
        opacity: 0.6;
    }
}

/* 烟花爆炸效果 */
.firework {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    animation: explode 1.5s ease-out forwards;
}

@keyframes explode {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: scale(1) translateY(100px);
        opacity: 0;
    }
}
/* 主标题 */
h1 {
    text-align: center;
    color: #FFD700;
    font-size: 3em;
    text-shadow: 
        3px 3px 6px rgba(0, 0, 0, 0.7),
        0 0 20px rgba(255, 215, 0, 0.5),
        0 0 40px rgba(255, 215, 0, 0.3);
    margin-bottom: 30px;
    background-size: 400% 400%;
    animation: titleGlow 3s ease infinite;
}

h1>span {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 50%, #FFD700 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    -webkit-backdrop-filter: blur(15px);
}

@keyframes titleGlow {
    0%, 100% { 
        text-shadow: 
            3px 3px 6px rgba(0, 0, 0, 0.7),
            0 0 20px rgba(255, 215, 0, 0.5),
            0 0 40px rgba(255, 215, 0, 0.3);
    }
    50% { 
        text-shadow: 
            3px 3px 6px rgba(0, 0, 0, 0.7),
            0 0 30px rgba(255, 215, 0, 0.8),
            0 0 60px rgba(255, 215, 0, 0.5);
    }
}

/* 装饰品区域 */
.decorations-section {
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.9) 0%, rgba(178, 34, 34, 0.85) 100%);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(255, 215, 0, 0.2),
        inset 0 1px 0 rgba(255, 215, 0, 0.3);
    border: 2px solid rgba(255, 215, 0, 0.4);
}

.section-title {
    color: #FFD700;
    font-size: 1.8em;
    margin-bottom: 20px;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8), 0 0 15px rgba(255, 215, 0, 0.5);
}

/* 语言选择区域样式 */
.language-selection {
    margin-bottom: 30px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.7) 0%, rgba(100, 0, 0, 0.8) 100%);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 215, 0, 0.3);
}

.language-title {
    color: #FFD700;
    font-size: 1.3em;
    margin-bottom: 15px;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

.language-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
}

.language-item {
    text-align: center;
    cursor: pointer;
    padding: 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.6) 0%, rgba(100, 0, 0, 0.7) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.language-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4), 0 0 15px rgba(255, 215, 0, 0.3);
    background: linear-gradient(135deg, rgba(178, 34, 34, 0.8) 0%, rgba(139, 0, 0, 0.9) 100%);
}

.language-item.selected {
    border-color: #FFD700;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.3) 0%, rgba(255, 165, 0, 0.2) 100%);
    transform: scale(1.03);
    box-shadow: 0 6px 18px rgba(255, 215, 0, 0.4), 0 0 20px rgba(255, 215, 0, 0.3);
}

.language-item .flag {
    font-size: 2em;
    margin-bottom: 8px;
    display: block;
}

.language-item .language-name {
    font-weight: bold;
    color: #ffffff;
    font-size: 0.9em;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

.decorations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.decoration-item {
    text-align: center;
    cursor: pointer;
    padding: 15px;
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 3px solid transparent;
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.6) 0%, rgba(100, 0, 0, 0.7) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.decoration-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4), 0 0 20px rgba(255, 215, 0, 0.3);
    background: linear-gradient(135deg, rgba(178, 34, 34, 0.8) 0%, rgba(139, 0, 0, 0.9) 100%);
}

.decoration-item.selected {
    border-color: #FFD700;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.35) 0%, rgba(255, 165, 0, 0.25) 100%);
    transform: scale(1.05);
    box-shadow: 0 6px 18px rgba(255, 215, 0, 0.5), 0 0 25px rgba(255, 215, 0, 0.4);
}

.decoration-item .icon {
    font-size: 3em;
    margin-bottom: 10px;
    display: block;
}

.decoration-item .name {
    font-weight: bold;
    color: #ffffff;
    font-size: 0.9em;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

.decoration-item .count {
    color: #ffdd44;
    font-weight: bold;
    margin-top: 5px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

/* 生成按钮 */
.generate-section {
    text-align: center;
    margin-bottom: 30px;
}

#generateButton {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 50%, #FF8C00 100%);
    color: #8B0000;
    border: none;
    border-radius: 50px;
    padding: 15px 40px;
    font-size: 1.2em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 
        0 4px 15px rgba(0, 0, 0, 0.3),
        0 0 20px rgba(255, 215, 0, 0.4);
    text-transform: uppercase;
    letter-spacing: 1px;
}

#generateButton:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.4),
        0 0 30px rgba(255, 215, 0, 0.6);
    background: linear-gradient(135deg, #FFEC8B 0%, #FFD700 50%, #FFA500 100%);
}

#generateButton:disabled {
    background: #666666;
    color: #999999;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* 祝福语输出区域 */
.blessing-section {
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.9) 0%, rgba(178, 34, 34, 0.85) 100%);
    border-radius: 15px;
    padding: 30px;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(255, 215, 0, 0.2),
        inset 0 1px 0 rgba(255, 215, 0, 0.3);
    border: 2px solid rgba(255, 215, 0, 0.4);
}

.blessing-section .section-title {
    color: #FFD700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8), 0 0 15px rgba(255, 215, 0, 0.5);
}

#modelOutput {
    min-height: 120px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.7) 0%, rgba(100, 0, 0, 0.8) 100%);
    border-radius: 10px;
    white-space: pre-wrap;
    color: #FFE4B5;
    font-size: 1.1em;
    line-height: 1.8;
    border: 2px solid rgba(255, 215, 0, 0.4);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3), 0 0 15px rgba(255, 215, 0, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

/* 移动端基础优化 */
html {
    /* 防止iOS Safari在横竖屏切换时缩放 */
    -webkit-text-size-adjust: 100%;
    /* 优化触摸滚动 */
    -webkit-overflow-scrolling: touch;
}

body {
    /* 移动端安全区域支持 */
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    
    /* 防止移动端橡皮筋效果 */
    overscroll-behavior: none;
}

/* 优化移动端飘落元素性能 */
@media (max-width: 768px) {
    .falling-element {
        /* 减少移动端元素数量以提升性能 */
        will-change: transform;
        transform: translateZ(0);
    }
}

/* 移动端字体优化 */
@media (max-width: 768px) {
    * {
        /* 优化移动端字体渲染 */
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    
    /* 描述文字移动端优化 */
    .decorations-section p {
        font-size: 0.9em !important;
        line-height: 1.4 !important;
        margin-bottom: 15px !important;
        padding: 0 10px;
    }
}

/* 超小屏幕描述文字优化 */
@media (max-width: 480px) {
    .decorations-section p {
        font-size: 0.8em !important;
        line-height: 1.3 !important;
        margin-bottom: 12px !important;
        padding: 0 5px;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
        max-width: 100%;
    }
    
    h1 {
        font-size: 2.2em;
        margin-bottom: 20px;
        line-height: 1.2;
    }
    
    /* 装饰品区域移动端优化 */
    .decorations-section {
        padding: 20px;
        margin-bottom: 20px;
    }
    
    .section-title {
        font-size: 1.5em;
        margin-bottom: 15px;
    }
    
    /* 语言选择移动端优化 */
    .language-selection {
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .language-title {
        font-size: 1.2em;
        margin-bottom: 12px;
    }
    
    .language-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .language-item {
        padding: 10px 8px;
    }
    
    .language-item .flag {
        font-size: 1.8em;
        margin-bottom: 6px;
    }
    
    .language-item .language-name {
        font-size: 0.8em;
    }
    
    /* 装饰品网格移动端优化 */
    .decorations-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
        margin-bottom: 20px;
    }
    
    .decoration-item {
        padding: 12px 8px;
    }
    
    .decoration-item .icon {
        font-size: 2.2em;
        margin-bottom: 8px;
    }
    
    .decoration-item .name {
        font-size: 0.8em;
    }
    
    .decoration-item .count {
        font-size: 0.8em;
        margin-top: 4px;
    }
    
    /* 生成按钮移动端优化 */
    #generateButton {
        padding: 12px 30px;
        font-size: 1em;
        width: 100%;
        max-width: 280px;
        letter-spacing: 0.5px;
    }
    
    /* 祝福语区域移动端优化 */
    .blessing-section {
        padding: 20px;
    }
    
    #modelOutput {
        font-size: 1em;
        padding: 15px;
        line-height: 1.5;
        min-height: 100px;
    }
}

/* 超小屏幕优化 (手机竖屏) */
@media (max-width: 480px) {
    .container {
        padding: 8px;
    }
    
    h1 {
        font-size: 1.8em;
        margin-bottom: 15px;
    }
    
    /* 装饰品区域超小屏幕优化 */
    .decorations-section {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .section-title {
        font-size: 1.3em;
        margin-bottom: 12px;
    }
    
    /* 语言选择超小屏幕优化 */
    .language-selection {
        padding: 12px;
        margin-bottom: 15px;
    }
    
    .language-title {
        font-size: 1.1em;
        margin-bottom: 10px;
    }
    
    .language-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .language-item {
        padding: 8px 6px;
    }
    
    .language-item .flag {
        font-size: 1.6em;
        margin-bottom: 4px;
    }
    
    .language-item .language-name {
        font-size: 0.75em;
    }
    
    /* 装饰品网格超小屏幕优化 */
    .decorations-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
        margin-bottom: 15px;
    }
    
    .decoration-item {
        padding: 8px 4px;
        border-radius: 8px;
    }
    
    .decoration-item .icon {
        font-size: 1.8em;
        margin-bottom: 6px;
    }
    
    .decoration-item .name {
        font-size: 0.7em;
    }
    
    .decoration-item .count {
        font-size: 0.7em;
        margin-top: 2px;
    }
    
    /* 生成按钮超小屏幕优化 */
    .generate-section {
        margin-bottom: 20px;
    }
    
    #generateButton {
        padding: 10px 25px;
        font-size: 0.9em;
        width: 100%;
        max-width: 250px;
        letter-spacing: 0.3px;
    }
    
    /* 祝福语区域超小屏幕优化 */
    .blessing-section {
        padding: 15px;
    }
    
    #modelOutput {
        font-size: 0.9em;
        padding: 12px;
        line-height: 1.4;
        min-height: 80px;
    }
}

/* 横屏手机优化 */
@media (max-width: 768px) and (orientation: landscape) {
    h1 {
        font-size: 2em;
        margin-bottom: 15px;
    }
    
    .decorations-section {
        padding: 15px;
    }
    
    .language-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 10px;
    }
    
    .decorations-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 10px;
    }
    
    .decoration-item .icon {
        font-size: 2em;
    }
    
    .container {
        max-width: 100%;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .decoration-item:hover,
    .language-item:hover,
    #generateButton:hover:not(:disabled) {
        transform: none;
    }
    
    .decoration-item:active {
        transform: scale(0.95);
    }
    
    .language-item:active {
        transform: scale(0.95);
    }
    
    #generateButton:active:not(:disabled) {
        transform: scale(0.98);
    }
}