/* 功能特色样式 */
.features {
    padding: 100px 0;
    background: var(--background-light);
}

.features-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.features-text h3 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.features-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.feature-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.project-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* 应用截图样式 */
.screenshots {
    padding: 100px 0;
}

.screenshots-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

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

.screenshot-mockup {
    margin-bottom: 2rem;
}

.phone-frame {
    width: 250px;
    height: 500px;
    background: #333;
    border-radius: 30px;
    padding: 20px;
    margin: 0 auto;
    box-shadow: var(--shadow-xl);
    position: relative;
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 5px;
    background: #666;
    border-radius: 3px;
}

.screen-content {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 20px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.app-header {
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--primary-color);
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.pet-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--light-blue);
    border-radius: 12px;
}

.pet-avatar {
    font-size: 2rem;
}

.pet-info h4 {
    font-size: 1rem;
    margin: 0;
    color: var(--text-primary);
}

.pet-info p {
    font-size: 0.8rem;
    margin: 2px 0 0 0;
    color: var(--text-secondary);
}

.health-status {
    background: #4caf50;
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    margin-left: auto;
}

.quick-actions {
    display: flex;
    gap: 10px;
}

.action-btn {
    flex: 1;
    padding: 10px;
    background: var(--primary-color);
    color: white;
    border-radius: 8px;
    font-size: 0.8rem;
    text-align: center;
}

.vaccine-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.vaccine-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: #f5f5f5;
    border-radius: 8px;
}

.vaccine-item.completed {
    background: #e8f5e8;
}

.vaccine-item.pending {
    background: #fff3e0;
}

.vaccine-icon {
    font-size: 1.5rem;
}

.vaccine-info h4 {
    font-size: 0.9rem;
    margin: 0;
}

.vaccine-info p {
    font-size: 0.7rem;
    margin: 2px 0 0 0;
    color: var(--text-secondary);
}

.status {
    margin-left: auto;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

.status.done {
    background: #4caf50;
    color: white;
}

.status.pending {
    background: #ff9800;
    color: white;
}

.tools-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.tool-card {
    background: var(--light-blue);
    padding: 15px;
    border-radius: 8px;
    text-align: center;
}

.tool-icon {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.tool-card p {
    font-size: 0.7rem;
    margin: 0;
    color: var(--text-primary);
}

.screenshot-desc h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.screenshot-desc p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 下载体验样式 */
.download {
    padding: 100px 0;
    background: var(--background-light);
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.app-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.feature-highlight {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.highlight-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-blue);
    border-radius: 50%;
    flex-shrink: 0;
}

.highlight-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.highlight-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

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

.download-buttons h3 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.platform-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.platform-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--white);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
}

.platform-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.platform-btn.android {
    border-color: #4caf50;
}

.platform-btn.android:hover {
    background: #4caf50;
}

.platform-btn.ios {
    border-color: #666;
    opacity: 0.6;
}

.platform-btn.github {
    border-color: #333;
}

.platform-btn.github:hover {
    background: #333;
}

.platform-icon {
    font-size: 1.5rem;
}

.platform-info {
    text-align: left;
}

.platform-info span {
    display: block;
    font-weight: 600;
    font-size: 1rem;
}

.platform-info small {
    font-size: 0.8rem;
    color: var(--text-light);
}

.version-info {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.5;
}

.version-info p {
    margin: 0.25rem 0;
}

/* 表单样式补充 */
.form select {
    padding: 15px;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    width: 100%;
    background: var(--white);
}

.form select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(3, 169, 244, 0.1);
}