/* ===== RESET ===== */
*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family: 'Segoe UI', sans-serif;
    background:#f4f7fb;
    color:#333;
    min-height:100vh;
}

/* ===== TITRE ===== */
h1{
    text-align:center;
    margin:30px 0;
    color:#1a73e8;
    font-size:2.5rem;
}

/* ===== RUBAN / ONGLET ===== */
.ribbon-container{
    display:flex;
    justify-content:center;
    margin-bottom:30px;
}

.ribbon{
    display:flex;
    gap:15px;
    background:white;
    padding:15px;
    border-radius:20px;
    box-shadow:0 5px 15px rgba(0,0,0,0.1);
}

.tab-button{
    border:none;
    background:#e9eefb;
    color:#1a73e8;
    padding:12px 20px;
    border-radius:15px;
    cursor:pointer;
    display:flex;
    align-items:center;
    gap:10px;
    font-size:1rem;
    font-weight:600;
    transition:0.3s;
}

.tab-button:hover{
    background:#1a73e8;
    color:white;
    transform:translateY(-2px);
}

.tab-button.active{
    background:#1a73e8;
    color:white;
}

/* ===== CONTENU ONGLET ===== */
.tab-content{
    width:90%;
    max-width:1200px;
    margin:auto;
    animation:fadeIn 0.4s ease;
}

@keyframes fadeIn{
    from{
        opacity:0;
        transform:translateY(10px);
    }
    to{
        opacity:1;
        transform:translateY(0);
    }
}

/* ===== CARTE BIENVENUE ===== */
.welcome-card{
    background:white;
    padding:40px;
    border-radius:25px;
    text-align:center;
    box-shadow:0 10px 25px rgba(0,0,0,0.08);
}

.welcome-card h3{
    margin:15px 0;
    color:#1a73e8;
    font-size:2rem;
}

.welcome-card p{
    margin-bottom:20px;
    font-size:1.1rem;
}

.instructions-list{
    list-style:none;
}

.instructions-list li{
    margin:10px 0;
    background:#f4f7fb;
    padding:12px;
    border-radius:12px;
}

/* ===== GALERIE ===== */
.gallery{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(250px,1fr));
    gap:25px;
    margin-top:25px;
}

.image-container{
    position:relative;
    overflow:hidden;
    border-radius:20px;
    background:white;
    box-shadow:0 5px 15px rgba(0,0,0,0.1);
    transition:0.3s;
}

.image-container:hover{
    transform:translateY(-5px);
}

.gallery img{
    width:100%;
    height:300px;
    object-fit:cover;
    cursor:pointer;
    transition:0.4s;
}

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

/* ===== COMPTEUR ===== */
.view_counter{
    position:absolute;
    bottom:10px;
    right:10px;
    background:rgba(0,0,0,0.7);
    color:white;
    padding:8px 12px;
    border-radius:12px;
    font-size:0.9rem;
}

/* ===== MODALE IMAGE ===== */
.modele{
    display:none;
    position:fixed;
    z-index:999;
    left:0;
    top:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.95);
    justify-content:center;
    align-items:center;
    flex-direction:column;
}

.modele-contenu{
    max-width:90%;
    max-height:85%;
    border-radius:15px;
    animation:zoomIn 0.3s ease;
}

@keyframes zoomIn{
    from{
        transform:scale(0.8);
        opacity:0;
    }
    to{
        transform:scale(1);
        opacity:1;
    }
}

/* ===== FERMER ===== */
.fermer{
    position:absolute;
    top:20px;
    right:30px;
    color:white;
    font-size:45px;
    cursor:pointer;
    transition:0.3s;
}

.fermer:hover{
    color:#1a73e8;
}

/* ===== NAVIGATION IMAGE ===== */
.nav-droite,
.nav-gauche{
    position:absolute;
    top:50%;
    transform:translateY(-50%);
    color:white;
    font-size:50px;
    cursor:pointer;
    user-select:none;
    padding:15px;
    transition:0.3s;
}

.nav-droite:hover,
.nav-gauche:hover{
    color:#1a73e8;
}

.nav-droite{
    right:20px;
}

.nav-gauche{
    left:20px;
}

/* ===== MESSAGE ERREUR ===== */
.error-message{
    color:#ffb3b3;
    margin-top:15px;
    font-weight:bold;
}

.success-message{
    color:#c6ffb3;
    margin-top:15px;
    font-weight:bold;
}

/* ===== INPUTS LOGIN ===== */
.login-container input{
    transition:0.3s;
}

.login-container input:focus{
    transform:scale(1.02);
    box-shadow:0 0 10px rgba(255,255,255,0.5);
}

/* ===== BOUTON LOGIN ===== */
.login-container button:hover{
    background:#dfe9ff;
    transform:translateY(-2px);
}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){

    h1{
        font-size:2rem;
    }

    .ribbon{
        flex-direction:column;
        width:90%;
    }

    .tab-button{
        justify-content:center;
        width:100%;
    }

    .welcome-card{
        padding:25px;
    }

    .gallery img{
        height:220px;
    }

    .nav-droite,
    .nav-gauche{
        font-size:35px;
    }
}