/* Responsive Design Stylesheet for Chi Zhang's Personal Website */

/* Base responsive settings */
html {
    box-sizing: border-box;
}

*, *:before, *:after {
    box-sizing: inherit;
}

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .container {
        max-width: 540px;
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    .container {
        max-width: 720px;
    }
    
    .profile-section {
        flex-direction: row;
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

/* Print styles */
@media print {
    body {
        font-size: 12pt;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
    }
    
    .no-print, .no-print * {
        display: none !important;
    }
    
    .container {
        max-width: 100%;
        width: 100%;
    }
}

/* Mobile navigation */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-item {
        margin: 0.5rem 0;
    }
}

/* Responsive tables */
@media (max-width: 768px) {
    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}

/* Responsive images */
img {
    max-width: 100%;
    height: auto;
}