:root {
    --bg-color: #f0f0f0;
    --main-color: #f0f0f0;
    --accent-color: #007acc;
    --cell-size: 132px;
}

body {
    font-family: Arial, sans-serif;
    background: var(--bg-color);
    color: var(--main-color);
    margin: 0;
    padding: 20px;
}

h1 {
    text-align: center;
    margin-bottom: 10px;
}

.grid-wrapper {
    display: block;
    background: #000;            /* fond noir */
    border: 5px solid #000;      /* contour noir */
    border-radius: 15px;         /* coins arrondis */
    padding: 45px 5px 5px 5px 5px; 
    max-width: 587px;            /* largeur max */
    margin: 20px auto;           /* marge + centrage horizontal */
    box-sizing: border-box;      /* inclut padding + bordure */
    min-height: 980px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, var(--cell-size));
    justify-content: center;
    margin-bottom: 20px;
    gap: 1px; /* espace uniforme entre les cases */
    background: #000; /* assure que l’espace entre les cellules est noir */
}

.grid.colored-border {
    box-shadow: 0 0 0 4px var(--grid-border-color);
    border-radius: 6px;
}

.cell {
    width: var(--cell-size);
    height: 199px;
    background: #fff;
}

.cell img {
    max-width: 100%;
    max-height: 100%;
    user-select: none;
    pointer-events: none;
    transition: transform 0.3s ease;
}

.dragover {
    border-color: var(--accent-color);
    background-color: #e0f0ff;
}

.controls {
    text-align: center;
    margin-bottom: 20px;
}

button {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 10px 15px;
    margin: 0 5px 10px 5px;
    cursor: pointer;
    font-size: 16px;
    border-radius: 4px;
}

button:hover {
    background: #005fa3;
}

input.code, input.email, input.pseudo {
    width: 40%;
    max-width: 400px;
    display: block;
    margin: 10px auto 10px auto;
    padding: 8px;
    font-family: monospace;
    transition: all 0.3s ease;
    font-size: 1.1em;
    text-align: center;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.hint {
    text-align: center;
    font-size: 14px;
    color: #666;
    max-width: 400px;
    margin: 0 auto 20px auto;
}

/* Header and menu styles */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: white;
    padding: 10px 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    font-weight: bold;
    font-size: 20px;
    color: var(--main-color);
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.menu .hamburger {
    font-size: 24px;
    background: none;
    border: none;
    cursor: pointer;
    display: none;
}

.menu-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

body.menu-open .menu-links {
    display: block;
    position: absolute;
    top: 60px;
    right: 20px;
    background: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    border-radius: 4px;
    width: 150px;
}

.menu-links li {
    margin-left: 20px;
}

.menu-links a {
    text-decoration: none;
    color: var(--main-color);
    padding: 8px 12px;
    display: block;
}

.menu-links a:hover {
    background-color: var(--accent-color);
    color: white;
    border-radius: 4px;
}

/* Responsive menu */
@media (max-width: 600px) {
    .menu .hamburger {
        display: block;
    }
    .menu-links {
        display: none;
        flex-direction: column;
    }
    .menu-links li {
        margin-left: 0;
    }
}

/* Gallery styles */
.gallery {
    margin-bottom: 20px;
    text-align: center;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    grid-gap: 10px;
    max-width: 250px;
    margin: 0 auto;
}

.gallery-item img {
    width: 100%;
    height: auto;
    border: 2px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.gallery-item img:hover {
    border-color: var(--accent-color);
}