/* 欢迎页面样式 - 使用统一颜色系统 */
.welcome-page {
    min-height: 100vh;
    background: var(--neutral-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-md);
    position: relative;
    overflow: hidden;
}

/* 动态背景动画 */
@keyframes backgroundShift {
    0%, 100% {
        background-position: 0% 0%, 100% 0%, 0% 100%, 0% 0%;
    }
    25% {
        background-position: 100% 100%, 0% 100%, 100% 0%, 0% 0%;
    }
    50% {
        background-position: 100% 0%, 0% 0%, 100% 100%, 0% 0%;
    }
    75% {
        background-position: 0% 100%, 100% 0%, 0% 0%, 0% 0%;
    }
}

/* 粒子背景效果 */
.welcome-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.15), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.1), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.15), transparent),
        radial-gradient(2px 2px at 160px 30px, rgba(255,255,255,0.1), transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: particleFloat 25s linear infinite;
    pointer-events: none;
}

@keyframes particleFloat {
    0% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
    100% { transform: translate(0, 0) rotate(360deg); }
}

.welcome-page .container {
    max-width: 1200px;
    width: 100%;
    text-align: center;
    position: relative;
    z-index: 1;
    animation: containerFadeIn 1.5s ease-out;
    transform-style: preserve-3d;
}

/* 容器入场动画 */
@keyframes containerFadeIn {
    0% {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 头部区域 */
.welcome-header {
    margin-bottom: var(--spacing-2xl);
    color: var(--neutral-dark);
    animation: headerSlideIn 1.2s ease-out 0.3s both;
}

.welcome-header h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.welcome-header h1::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: shimmer 3s infinite;
    pointer-events: none;
}

.welcome-header .subtitle {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

.welcome-header .description {
    font-size: var(--text-lg);
    opacity: 0.85;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 动画效果 */
@keyframes headerSlideIn {
    0% {
        opacity: 0;
        transform: translateY(-30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes textGlow {
    0% { filter: brightness(1) saturate(1); }
    100% { filter: brightness(1.2) saturate(1.3); }
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes subtitleFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

/* 角色选择区域 */
.role-selection {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    animation: cardsSlideUp 1.5s ease-out 0.6s both;
}

.role-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(15px);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg) var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    transition: var(--transition-slow);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.2);
}

/* 流光边框效果 */
.role-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, 
        #a8b5f5, #7dd3fc, #86efac, #bfdbfe, #fed7aa, #a8b5f5);
    background-size: 400% 400%;
    border-radius: 27px;
    z-index: -1;
    animation: borderFlow 3s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.role-card:hover::before {
    opacity: 1;
}

.role-card:hover {
    transform: translateY(-20px);
    box-shadow: 
        0 25px 50px rgba(45, 55, 72, 0.15),
        0 10px 25px rgba(45, 55, 72, 0.1);
}

/* 动画效果 */
@keyframes cardsSlideUp {
    0% {
        opacity: 0;
        transform: translateY(50px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.role-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    width: 60px;
    margin: 0 auto var(--spacing-md);
    transition: var(--transition-normal);
    position: relative;
    box-shadow: var(--shadow-md);
}

.role-card:hover .role-icon {
    transform: rotateY(360deg) scale(1.1);
    box-shadow: var(--shadow-lg);
    background: rgba(255,255,255,0.2);
}

.role-card h3 {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--neutral-dark);
}

.role-features {
    margin-bottom: var(--spacing-md);
}

.feature {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    font-size: var(--text-base);
    color: var(--neutral-medium);
    padding: var(--spacing-xs);
}

.role-btn {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--text-base);
    font-weight: 700;
    border: none;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.role-btn::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 0.5s ease;
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: var(--neutral-card);
    text-shadow: 0 1px 2px rgba(0,0,0,0.15);
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--neutral-card);
    text-shadow: 0 1px 2px rgba(0,0,0,0.15);
}

.btn-secondary:hover {
    background: var(--secondary-green-dark);
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

@keyframes buttonPulse {
    0%, 100% { box-shadow: 
        0 15px 25px rgba(102, 126, 234, 0.4),
        0 0 20px rgba(102, 126, 234, 0.3),
        inset 0 1px 0 rgba(255,255,255,0.3); }
    50% { box-shadow: 
        0 15px 25px rgba(102, 126, 234, 0.6),
        0 0 30px rgba(102, 126, 234, 0.5),
        inset 0 1px 0 rgba(255,255,255,0.3); }
}

/* 底部区域 */
.welcome-footer {
    color: var(--neutral-medium);
    opacity: 0.8;
    font-size: var(--text-base);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .welcome-header h1 {
        font-size: 2.5rem;
    }
    
    .welcome-header .subtitle {
        font-size: var(--text-lg);
    }
    
    .role-selection {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .role-card {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .role-icon {
        font-size: 2.5rem;
        height: 50px;
        width: 50px;
    }
    
    .role-card h3 {
        font-size: var(--text-xl);
    }
    
    .feature {
        font-size: var(--text-base);
    }
    
    .daily-content-section {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        margin-bottom: var(--spacing-2xl);
    }
    
    .daily-card .card-image {
        height: 100px;
    }
    
    .daily-card .card-content {
        padding: var(--spacing-lg);
    }
    
    .daily-card h4 {
        font-size: var(--text-lg);
    }
    
    .daily-card .content-text {
        font-size: var(--text-sm);
        min-height: 50px;
    }
    
    .encourage-text {
        font-size: var(--text-base);
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .welcome-page {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .welcome-header {
        margin-bottom: var(--spacing-xl);
    }
    
    .welcome-header h1 {
        font-size: 2rem;
    }
    
    .role-card {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .daily-content-section {
        padding: 0 var(--spacing-sm);
        gap: var(--spacing-md);
    }
    
    .daily-card .card-image {
        height: 80px;
    }
    
    .daily-card .card-content {
        padding: var(--spacing-md);
    }
    
    .daily-card h4 {
        font-size: var(--text-lg);
    }
    
    .daily-card .content-text {
        font-size: var(--text-sm);
        min-height: 40px;
    }
}

/* 每日内容区域 */
.daily-content-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    padding: 0 var(--spacing-md);
    animation: dailyCardsSlideIn 1.8s ease-out 0.9s both;
}

.daily-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(15px);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-slow);
    position: relative;
    border: 1px solid rgba(255,255,255,0.3);
}

.daily-card::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.5), transparent);
    border-radius: 22px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.daily-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow-xl);
}

.daily-card:hover::after {
    opacity: 1;
}

@keyframes dailyCardsSlideIn {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.daily-card .card-image {
    height: 120px;
    overflow: hidden;
    position: relative;
}

.daily-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

/* 为卡片图片区域添加默认背景 */
.diary-card .card-image {
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.encourage-card .card-image {
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.daily-card .card-image img {
    opacity: 0.8;
}

.daily-card .card-image img[src*="placeholder"] {
    opacity: 0;
}

/* 为卡片添加装饰图标 */
.diary-card .card-image::before {
    content: '📝';
    font-size: 3rem;
    position: absolute;
    color: rgba(255, 255, 255, 0.8);
    z-index: 1;
}

.encourage-card .card-image::before {
    content: '🌟';
    font-size: 3rem;
    position: absolute;
    color: rgba(255, 255, 255, 0.8);
    z-index: 1;
}

.daily-card:hover .card-image img {
    transform: scale(1.05);
}

.daily-card .card-content {
    padding: var(--spacing-lg);
    text-align: left;
}

.daily-card h4 {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--neutral-dark);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.daily-card .date-info {
    font-size: var(--text-sm);
    color: var(--neutral-medium);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.daily-card .content-text {
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--neutral-dark);
    min-height: 60px;
}

.encourage-text {
    font-weight: 500;
    font-size: var(--text-lg);
    color: var(--primary-blue);
    text-align: center;
    padding: var(--spacing-md);
    background: var(--neutral-bg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-blue);
}

/* 卡片特殊样式 */
.diary-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.encourage-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-secondary);
}

/* 加载状态 */
.daily-card .content-text:empty::after {
    content: '正在加载...';
    color: var(--neutral-regular);
    font-style: italic;
}