/* 平板电脑和小屏幕笔记本 */
@media screen and (max-width: 1024px) {
    .container {
        max-width: 900px;
    }
    
    .photo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 平板竖屏和大屏手机 */
@media screen and (max-width: 768px) {
    :root {
        --section-spacing: 60px;
    }

    .header .container {
        flex-direction: column;
        height: auto;
        padding: 15px;
    }

    .nav ul {
        flex-direction: column;
        align-items: center;
        margin-top: 15px;
        gap: 15px;
    }

    .nav a {
        padding: 8px 15px;
        font-size: 16px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .hero-overlay {
        padding: 40px 20px;
        width: 90%;
    }

    .message-board {
        margin: 0 15px;
    }

    .messages-container {
        height: 400px;
    }

    .contact-info {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* 手机端 */
@media screen and (max-width: 480px) {
    :root {
        --container-padding: 15px;
        --section-spacing: 40px;
    }

    .hero-overlay {
        padding: 30px 15px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero p {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .section-title {
        font-size: 32px;
    }

    .photo-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .message-item {
        padding: 12px;
    }

    .form-footer {
        flex-direction: column;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --light-gray: #1a1a1a;
        --white: #242424;
        --text-primary: #e0e0e0;
        --text-secondary: #a0a0a0;
    }

    .message-item {
        background: #2a2a2a;
    }

    .message-content {
        color: #d0d0d0;
    }

    .message-form textarea,
    .message-form input {
        background: #333;
        color: #e0e0e0;
        border-color: #404040;
    }
}

/* 减少动画效果（用户选择减少动画） */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* 打印样式优化 */
@media print {
    .header,
    .nav,
    .music-control,
    .message-form,
    .social-links {
        display: none;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }

    body {
        background: white;
        color: black;
    }
}