/* 全局样式 */
:root {
    --primary-color: #4a90e2;
    --secondary-color: #7b68ee;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --pink-color: #e91e63;
    
    /* === Kid-Friendly Colors === */
    --kid-primary: #FFC107; /* Amber */
    --kid-secondary: #00BCD4; /* Cyan */
    --kid-accent: #FF5722;   /* Deep Orange */
    --kid-bg: #F0F8FF;       /* AliceBlue */
    --kid-text: #5D4037;     /* Brown */
}

body {
    font-family: 'Helvetica Neue', 'Arial', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: #ffffff;
    color: #444;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex-grow: 1;
}

/* 导航栏 */
.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}
.navbar-brand i {
    color: var(--primary-color);
}

/* === Kid-Friendly Auth Styles === */
.auth-page-container {
    background-color: var(--kid-bg);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(0, 188, 212, 0.1) 8%, transparent 0),
        radial-gradient(circle at 80% 70%, rgba(255, 193, 7, 0.1) 8%, transparent 0);
    background-size: 250px 250px;
}
.kid-auth-card {
    border: none;
    border-radius: 20px;
    overflow: hidden;
    background-color: #ffffff;
}
.kid-auth-header {
    background: linear-gradient(135deg, var(--kid-primary), #FFD54F);
    color: white;
    padding: 2rem 1.5rem;
    text-align: center;
    border-bottom: 5px solid #ffb300;
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
    margin-bottom: -2rem;
}
.kid-auth-header .icon {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    transform: rotate(-10deg) scale(1.1);
    display: inline-block;
    color: white;
    text-shadow: 2px 2px 5px rgba(0,0,0,0.25);
}
.kid-auth-header h2 {
    font-weight: 900;
    font-size: 2rem;
    margin: 0;
    letter-spacing: 1px;
}
.kid-auth-card .card-body {
    padding-top: 3rem !important;
}
.kid-auth-card .form-label {
    font-weight: 600;
    color: var(--kid-text);
    margin-bottom: 0.25rem;
}
.kid-auth-card .form-control, .kid-auth-card .form-select {
    border-radius: 30px;
    padding-left: 20px;
    padding-top: .6rem;
    padding-bottom: .6rem;
    border: 2px solid #e0e0e0;
    transition: all 0.3s ease;
}
.kid-auth-card .form-control:focus, .kid-auth-card .form-select:focus {
    border-color: var(--kid-secondary);
    box-shadow: 0 0 0 0.2rem rgba(0,188,212, 0.2);
}
.kid-auth-card .input-group-text {
    border-radius: 30px 0 0 30px;
    background-color: #f5f5f5;
    border: 2px solid #e0e0e0; border-right: none;
    color: var(--kid-secondary);
}
.kid-auth-card .input-group .form-control { border-radius: 0 30px 30px 0; }
.kid-auth-card .input-group .btn {
    border-radius: 0 30px 30px 0 !important;
    border-color: #e0e0e0;
    box-shadow: none;
}
.kid-auth-card .btn-primary, .btn-kid-accent {
    background: linear-gradient(45deg, var(--kid-accent), #FF8A65);
    border: none;
    border-radius: 30px;
    font-weight: 700;
    padding: 12px 24px;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(255, 87, 34, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: white !important;
}
.kid-auth-card .btn-primary:hover, .btn-kid-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 87, 34, 0.45);
}
.kid-auth-card a {
    color: var(--kid-secondary);
    text-decoration: none !important;
    transition: color .2s;
}
.kid-auth-card a:hover { color: var(--kid-accent); }

/* === 修复后的轮播图样式 === */
.hero-carousel-fixed {
    position: relative;
    overflow: hidden;
}

.hero-carousel-fixed .carousel-item {
    height: 70vh;
    min-height: 500px;
    position: relative;
}

.hero-carousel-fixed .carousel-item img {
    object-fit: cover;
    width: 100%;
    height: 100%;
}

.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

/* 漂浮装饰元素 */
.floating-decorations {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    pointer-events: none;
}

.float-emoji {
    position: absolute;
    font-size: 2.5rem;
    animation: floatAnimation 4s ease-in-out infinite;
}

.float-emoji:nth-child(1) { top: 15%; left: 10%; animation-delay: 0s; }
.float-emoji:nth-child(2) { top: 25%; right: 15%; animation-delay: 1s; }
.float-emoji:nth-child(3) { bottom: 30%; left: 15%; animation-delay: 2s; }
.float-emoji:nth-child(4) { bottom: 20%; right: 10%; animation-delay: 3s; }

@keyframes floatAnimation {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.7; }
    50% { transform: translateY(-20px) rotate(5deg); opacity: 1; }
}

/* 轮播内容样式 */
.hero-carousel-fixed .carousel-caption {
    position: absolute;
    bottom: 20%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    color: white;
    text-align: center;
    max-width: 800px;
    width: 90%;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.5);
}

.hero-title .highlight {
    background: linear-gradient(45deg, #FFD700, #FFA500);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    text-shadow: 1px 1px 5px rgba(0,0,0,0.5);
}

.btn-hero {
    background: linear-gradient(45deg, #FF6B6B, #4ECDC4);
    border: none;
    padding: 15px 35px;
    border-radius: 50px;
    color: white;
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
    text-decoration: none !important;
}

.btn-hero:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(0,0,0,0.4);
    color: white;
}

/* 轮播指示器和控制器 */
.hero-carousel-fixed .carousel-indicators {
    bottom: 30px;
    z-index: 15;
}

.hero-carousel-fixed .carousel-indicators button {
    width: 15px !important;
    height: 15px !important;
    border-radius: 50% !important;
    margin: 0 10px !important;
    background: rgba(255, 255, 255, 0.5) !important;
    border: 2px solid white !important;
    transition: all 0.3s ease;
}

.hero-carousel-fixed .carousel-indicators .active {
    background: white !important;
    transform: scale(1.2);
}

.hero-carousel-fixed .carousel-control-prev,
.hero-carousel-fixed .carousel-control-next {
    z-index: 15;
    width: 60px;
    opacity: 0.8;
}

.hero-carousel-fixed .carousel-control-prev:hover,
.hero-carousel-fixed .carousel-control-next:hover {
    opacity: 1;
}

/* 波浪分隔符 */
.wavy-divider {
    height: 100px;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3e%3cpath fill='%23ffffff' fill-opacity='1' d='M0,192L80,176C160,160,320,128,480,133.3C640,139,800,181,960,186.7C1120,192,1280,160,1360,144L1440,128L1440,0L1360,0C1280,0,1120,0,960,0C800,0,640,0,480,0C320,0,160,0,80,0L0,0Z'%3e%3c/path%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-size: cover;
    margin-top: -100px;
    position: relative;
    z-index: 10;
}

/* 页面区块通用样式 */
.page-section {
    padding: 80px 0;
}
.bg-light-kid {
    background-color: #fefcfa;
}
.section-title {
    text-align: center;
    margin-bottom: 50px;
}
.section-title h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--kid-text);
    position: relative;
    display: inline-block;
    padding-bottom: 10px;
}
.section-title h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 5px;
    background: linear-gradient(to right, var(--kid-primary), var(--kid-accent));
    border-radius: 5px;
    margin: 10px auto 0;
}
.section-title p {
    color: #777;
    font-size: 1.1rem;
}

/* 新特色卡片 */
.kid-feature-card {
    background: #fff;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    height: 100%;
}
.kid-feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}
.kid-feature-card .icon-bubble {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.kid-feature-card .icon-bubble i {
    font-size: 2.5rem;
}
.kid-feature-card h5 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--kid-text);
    margin-bottom: 10px;
}
.kid-feature-card p {
    font-size: 0.9rem;
    color: #666;
}

/* 新场景卡片 */
.scenario-card-new {
    background-color: #fff;
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0,0,0,0.07);
    transition: all 0.3s ease-in-out;
}
.scenario-card-new:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 35px rgba(0,0,0,0.12);
}
.scenario-card-new .scenario-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    background-color: #e3f2fd;
    color: #2196F3;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
}
.scenario-card-new h5 {
    font-weight: 700;
    margin-bottom: 1rem;
}
.scenario-card-new p {
    color: #777;
    font-size: 0.95rem;
    min-height: 60px;
}
.scenario-card-new .tags {
    margin-top: 1rem;
}
.scenario-card-new .tag {
    background-color: #eee;
    color: #555;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin: 0 5px;
    display: inline-block;
}

/* 新CTA区块 */
.cta-section-kid {
    background: linear-gradient(135deg, var(--kid-secondary), var(--kid-primary));
    color: white;
    padding: 100px 0;
}
.cta-section-kid h2 {
    font-size: 2.8rem;
    font-weight: 800;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
}
.cta-section-kid p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-carousel-fixed .carousel-item {
        height: 60vh;
        min-height: 400px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .float-emoji {
        font-size: 1.8rem;
    }
    
    .btn-hero {
        padding: 12px 25px;
        font-size: 1rem;
    }
    
    .hero-carousel-fixed .carousel-caption {
        bottom: 15%;
        width: 95%;
    }
}

.text-pink {
    color: var(--pink-color) !important;
}