/* Styles généraux - Thème sombre */
body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #000000 100%);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #ffffff;
}

/* Container principal */
.container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0;
    margin: 0;
    max-width: 100%;
    width: 100%;
    height: 100vh;
}

/* Container de l'image */
.image-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100vh;
}

/* Styles des images */
img {
    max-width: 200px;
    max-height: 200px;
    width: auto;
    height: auto;
    transition: all 0.4s ease;
    object-fit: contain;
    margin: 0;
    padding: 0;
}

img:hover {
    transform: scale(1.05);
}

/* Styles du bouton */
button {
    padding: 15px 30px;
    font-size: 16px;
    background: linear-gradient(45deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    margin: 0;
}

button:hover {
    background: linear-gradient(45deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

button:active {
    transform: translateY(-1px);
}

/* Informations de l'image */
.image-info {
    margin: 0;
    padding: 0;
    color: #e0e0e0;
    font-size: 16px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* Indicateur d'alternance automatique */
.auto-indicator {
    margin: 0;
    padding: 0;
    color: #888;
    font-size: 12px;
    font-style: italic;
}

/* Animation de pulsation pour l'indicateur */
@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

.auto-indicator {
    animation: pulse 2s infinite;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 0;
        margin: 0;
        height: 100vh;
    }
    
    .image-container {
        margin: 0;
        padding: 0;
        height: 100vh;
    }
    
    img {
        max-width: 150px;
        max-height: 150px;
        margin: 0;
        padding: 0;
    }
    
    button {
        padding: 12px 25px;
        font-size: 14px;
        margin: 0;
    }
    
    .image-info {
        font-size: 14px;
        margin: 0;
        padding: 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0;
        margin: 0;
        height: 100vh;
    }
    
    .image-container {
        margin: 0;
        padding: 0;
        height: 100vh;
    }
    
    img {
        max-width: 120px;
        max-height: 120px;
        margin: 0;
        padding: 0;
    }
    
    button {
        padding: 10px 20px;
        font-size: 12px;
        margin: 0;
    }
    
    .image-info {
        font-size: 12px;
        margin: 0;
        padding: 0;
    }
}

@media (max-width: 320px) {
    .container {
        padding: 0;
        margin: 0;
        height: 100vh;
    }
    
    .image-container {
        margin: 0;
        padding: 0;
        height: 100vh;
    }
    
    img {
        max-width: 100px;
        max-height: 100px;
        margin: 0;
        padding: 0;
    }
    
    button {
        padding: 8px 16px;
        font-size: 11px;
        margin: 0;
    }
}

/* Effet de transition pour les images */
.fade-transition {
    transition: opacity 0.3s ease-in-out;
}