/*
 * @description: 宝宝AI画画 - 专属样式表
 * @author: Gemini AI Designer
 */

/* ===================================================================
    Global Styles
====================================================================== */
body {
    font-family: 'Arial', '微软雅黑', sans-serif;
    background-color: #FFF9FE; /* 使用柔和的淡粉色背景 */
    color: #4F3A57; /* 深紫色作为主文字颜色，对比清晰且柔和 */
    line-height: 1.8;
    margin: 0;
}

.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 15px;
    padding-right: 15px;
}

.text-center {
    text-align: center;
}

a {
    text-decoration: none;
    transition: all 0.3s ease;
}

/* ===================================================================
    Header
====================================================================== */
.theme-main-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 20px 0;
}

.theme-main-header .logo img {
    width: 130px;
    height: auto;
}

/* ===================================================================
    Hero Banner Section
====================================================================== */
.hero-banner {
    background: linear-gradient(135deg, #ffb6c1, #87ceeb); /* 沿用并优化渐变色 */
    padding: 160px 0 80px;
    text-align: center;
    color: white;
    border-radius: 0 0 50px 50px;
    position: relative;
    overflow: hidden;
}

.hero-banner h1 {
    font-size: 3.2em;
    font-weight: bold;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.2);
    margin: 0 0 10px;
}

.hero-banner .subtitle {
    font-size: 1.4em;
    font-weight: 300;
    opacity: 0.9;
    margin: 0 0 20px;
}

.hero-banner .description {
    font-size: 1.1em;
    max-width: 550px;
    margin: 0 auto 30px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1em;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border: 2px solid transparent;
}

.download-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.download-btn.apple {
    background-color: white;
    color: #ff6b88;
}

.download-btn.android {
    background-color: transparent;
    border-color: white;
    color: white;
}

.download-btn img {
    height: 20px;
}

.hero-image-wrapper {
    margin-top: 50px;
    padding: 0 15px;
}

.hero-image-wrapper img {
    max-width: 100%;
    width: 700px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

/* ===================================================================
    General Section & Title Styling
====================================================================== */
.section {
    padding: 90px 0;
}

.theme-title {
    margin-bottom: 60px;
}

.theme-title h2 {
    font-size: 2.4em;
    color: #ff6b88;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.theme-title h2:after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 4px;
    background: linear-gradient(to right, #ff6b88, #a174ff);
    border-radius: 2px;
}

.theme-title p {
    font-size: 1.1em;
    color: #777;
    max-width: 600px;
    margin: 0 auto;
}


/* ===================================================================
    Features Section
====================================================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 35px 25px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #f0f0f0;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(255, 107, 136, 0.15);
}

.feature-card h3 {
    font-size: 1.4em;
    color: #4F3A57;
    margin-bottom: 10px;
}

.feature-card p {
    color: #666;
    font-size: 0.95em;
}

/* ===================================================================
    Showcase (AI Magic) Section
====================================================================== */
.showcase-section {
    background-color: #fdf6ff;
}

.showcase-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 50px;
}

.showcase-content .text-content {
    flex: 1 1 45%;
    min-width: 300px;
}

.showcase-content h3 {
    font-size: 1.8em;
    color: #a174ff;
    margin-bottom: 20px;
    line-height: 1.4;
}

.showcase-content .description {
    font-size: 1.05em;
    margin-bottom: 25px;
}

.showcase-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.showcase-content ul li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 1.05em;
}

.showcase-content ul .tick-icon {
    width: 22px;
    height: 22px;
    background-color: #a174ff;
    color: white;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
}

.showcase-content .image-comparison {
    flex: 1 1 45%;
    min-width: 300px;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border-radius: 20px;
    overflow: hidden;
}

.image-comparison img {
    max-width: 100%;
    display: block;
}

/* ===================================================================
    Final CTA Section
====================================================================== */
.final-cta {
    background: linear-gradient(135deg, #a174ff, #ff6b88);
    color: white;
    text-align: center;
    padding: 70px 0;
}

.final-cta h2 {
    font-size: 2.2em;
    margin-bottom: 15px;
}

.final-cta p {
    font-size: 1.1em;
    margin-bottom: 30px;
    opacity: 0.9;
}


/* ===================================================================
    Footer
====================================================================== */
.main-footer {
    text-align: center;
    padding: 40px 0;
    color: #888;
    font-size: 0.9em;
    background-color: #FFF9FE;
}

.main-footer a {
    color: #ff6b88;
}

.main-footer a:hover {
    text-decoration: underline;
}

/* ===================================================================
    Responsive Design
====================================================================== */
@media (max-width: 991px) {
    .hero-banner h1 { font-size: 2.8em; }
    .hero-banner .subtitle { font-size: 1.3em; }
    .theme-title h2 { font-size: 2.2em; }
    
    .showcase-content {
        flex-direction: column;
        text-align: center;
    }

    .showcase-content ul li {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .section { padding: 70px 0; }
    .hero-banner { padding: 120px 0 60px; border-radius: 0 0 40px 40px; }
    .hero-banner h1 { font-size: 2.4em; }
    .hero-banner .subtitle { font-size: 1.2em; }
    .theme-title h2 { font-size: 2em; }
}

@media (max-width: 480px) {
    body { line-height: 1.7; }
    .hero-banner h1 { font-size: 2em; }
    .hero-banner .subtitle { font-size: 1.1em; }
    .download-btn { padding: 12px 28px; font-size: 1em; }
    .features-grid { grid-template-columns: 1fr; } /* Stack features on mobile */
    .theme-title h2 { font-size: 1.8em; }
    .theme-title p { font-size: 1em; }
    .final-cta h2 { font-size: 1.8em; }
}