* { 
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    margin: 0;
    padding: 0;
    font-family: 'Courier New', Courier, monospace;
    background-color: #0a0a0a;
    color: #00FF41;
    cursor: url('cursor.cur'), auto;
}
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 15px 0;
    background: rgba(0, 0, 0, 0.9);
    text-align: center;
    z-index: 1000
}

header nav {
    display: flex;
    justify-content: center;
    align-items: center;
}

header nav a {
    color: #00FF41;
    text-decoration: none;
    margin: 0 15px;
    padding: 5px 10px;
    font-size: 1.2rem;
    position: relative;
}

header nav a:hover {
    text-decoration: underline;
    color: #0a0a0a;
    background-color: #00FF41;
}

main {
    margin-top: 68px;
}

.intro {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    text-align: center;
    background: url('images/alien-bg.webp') no-repeat center center fixed;
    background-size: cover;
    padding: 20px;
}

footer {
    background-color: #0a0a0a;
    color: #00FF41;
    text-align: center;
    padding: 20px 0;
}


.theme-dropdown {
    position: relative;
    display: inline-block;
}

.theme-button {
    background-color: #00FF41;
    font-family: 'Courier New', Courier, monospace;
    color: #000000;
    border: none;
    padding: 10px;
    font-size: 1rem;
    cursor: pointer;
}

.theme-button:hover {
    background-color: #ffffff;
    color: #000000;
}

.theme-menu {
    display: none;
    position: absolute;
    background-color: #111;
    min-width: 160px;
    right: 0;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}

.theme-menu a {
    color: #00FF41;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    font-size: 1rem;
}

.theme-menu a:hover {
    background-color: #ffffff;
    color: #0a0a0a;
}

.theme-dropdown:hover .theme-menu {
    display: block;
}

/* Thème old hack matrix */
body.theme-hack {
    background-color: #0a0a0a;
    color: #00FF41;
}

/* Thème artistique coloré */
body.art {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #ffffff;
    color: #333;
}

body.art header {
    background: #f5f5f7;
    padding: 20px 0;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

body.art header nav a {
    color: #0071e3;
    text-decoration:none;
    padding: 15px;
    margin: 0px;
}
body.art header nav #nav-contact{
    margin-right: 20px;
}
body.art header nav a:hover {
    color: #ffffff;
    background-color: #0071e3;
    border-radius: 25px;
}

body.art header nav .theme-button{
    background-color: #0071e3;
    color: #ffffff;
    border-radius: 11px;
}

body.art header nav .theme-menu {
    background-color: #ffffffb0;
    border-radius: 10px;
}
body.art header nav .theme-menu a {
    border-radius: 10px;
}
body.art header nav .theme-menu a:hover {
    background-color: #0071e3b0;
}
body.art footer {
    background-color: #f5f5f7;
    color: #333;
}






/* Pour les petits écrans (iPhone 14 Pro Max et similaires) */
@media (max-width: 429px) {
    header nav a {
        font-size: 0.7rem;
    }
    .intro {
        background-size: contain;
    }
}
@media (min-width: 430px) and (max-width: 659px) {
    header nav a {
        font-size: 14px;
    }
    .intro {
       background-size: contain; 
    }
}
/* Pour les écrans moyens (comme les tablettes) */
@media (min-width: 660px) and (max-width: 768px) {
.intro {
    background-size: contain;
    }
}
@media (min-width: 769px) and (max-width: 1049px) {

}
@media (min-width: 1050px) {

}


@media screen and (max-width: 768px) {

}
#matrix-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    display: none;
}

body.theme-hack #matrix-bg {
    display: block;
}