/* 响应式断点 */
/* 平板 */
@media (max-width: 1024px) {
    .content-container {
        max-width: 700px;
        padding: 0 2rem;
    }
    
    .intro-block h2 {
        font-size: 1.6rem;
    }
}

/* 手机横屏 */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.3rem;
        margin-left: 0.5rem;
    }
    
    .navbar-actions {
        margin-right: 0.5rem;
        gap: 0.25rem;
    }
    
    .navbar-btn {
        width: 36px;
        height: 36px;
        padding: 0.4rem;
    }
    
    .navbar-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .clock-section {
        height: calc(100vh - 60px); /* 平板也占据除导航栏外的整个视窗高度 */
        padding: 1rem;
    }
    
    .content-section {
        padding: 3rem 1rem;
    }
    
    .content-container {
        max-width: 100%;
        padding: 0 1rem;
    }
    
    .intro-block {
        margin-bottom: 2.5rem;
    }
    
    .intro-block h2 {
        font-size: 1.4rem;
    }
    
    .intro-block p {
        font-size: 1rem;
    }
    
    .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .footer-links {
        justify-content: center;
        gap: 1.5rem;
    }
}

/* 手机竖屏 */
@media (max-width: 480px) {
    .navbar {
        height: 50px;
    }
    
    body {
        padding-top: 50px;
    }
    
    .settings-panel {
        top: 50px;
        height: calc(100vh - 50px);
        padding: 1rem;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .navbar-btn {
        width: 32px;
        height: 32px;
        padding: 0.3rem;
    }
    
    .navbar-btn svg {
        width: 16px;
        height: 16px;
    }
    
    .clock-section {
        height: calc(100vh - 50px); /* 移动端也占据除导航栏外的整个视窗高度 */
        padding: 0.5rem;
    }
    
    .content-section {
        padding: 2rem 0.5rem;
    }
    
    .intro-block {
        margin-bottom: 2rem;
    }
    
    .intro-block h2 {
        font-size: 1.3rem;
        margin-bottom: 0.8rem;
    }
    
    .intro-block p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .faq-item h3 {
        font-size: 1.1rem;
    }
    
    .footer {
        padding: 1.5rem 0.5rem;
    }
    
    .footer-links {
        gap: 1rem;
        flex-wrap: wrap;
    }
    
    .footer-links a {
        font-size: 0.85rem;
    }
    
    .footer-copyright {
        font-size: 0.8rem;
    }
}

/* 超小屏幕 */
@media (max-width: 320px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .intro-block h2 {
        font-size: 1.2rem;
    }
    
    .intro-block p {
        font-size: 0.9rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 0.8rem;
    }
}

/* 横屏模式优化 */
@media (orientation: landscape) and (max-height: 600px) {
    .clock-section {
        min-height: 90vh;
        padding: 0.5rem;
    }
    
    .digital-time {
        font-size: clamp(2rem, 10vh, 4rem);
    }
    
    .digital-date {
        font-size: clamp(0.8rem, 3vh, 1.2rem);
    }
}

/* 高分辨率屏幕优化 */
@media (min-width: 1200px) {
    .content-container {
        max-width: 900px;
    }
    
    .intro-block h2 {
        font-size: 2rem;
    }
    
    .intro-block p {
        font-size: 1.15rem;
    }
}