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

body {
    background: linear-gradient(to top, #000000, #2a5298);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: 'Segoe UI', sans-serif;
    overflow-x: hidden;
}


/* TITRE */

#titreaccueil {
    text-align: center;
    margin-top: clamp(20px, 15vh, 5px);
    margin-bottom: clamp(24px, 4vw, 60px);
    color: white;
    font-size: clamp(18px, 2.5vw, 28px);
    letter-spacing: 2px;
}

/* MENU */

.menu-barre {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(8px);
    display: flex;
    flex-wrap: wrap;            /* passe à la ligne sur petit écran */
    justify-content: space-between;
    align-items: center;
    padding: clamp(8px, 1.5vw, 15px);
    width: 90%;
    margin: 0 auto clamp(32px, 6vw, 10px);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.menu-barre a {
    position: relative;
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: clamp(8px, 1.2vw, 12px) clamp(8px, 1.2vw, 15px);
    border-radius: 8px;
    flex: 1;
    min-width: 100px;           /* évite que les liens deviennent trop étroits */
    text-align: center;
    transition: all 0.3s ease;
    overflow: hidden;
    font-size: clamp(13px, 1.2vw, 16px);
}

/* Soulignement menu */

.menu-barre a::after {
    content: "";
    position: absolute;
    width: 0%;
    height: 3px;
    bottom: 5px;
    left: 50%;
    background: white;
    transition: 0.3s ease;
    transform: translateX(-50%);
}

.menu-barre a:hover::after {
    width: 60%;
}

/* Effet élévation */

.menu-barre a:hover {
    transform: translateY(-5px);
    background: rgba(255,255,255,0.15);
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

/* FOOTER */

footer {
    margin-top: auto;
    padding: clamp(14px, 2vw, 25px);
    font-size: clamp(11px, 1vw, 13px);
    text-align: center;
    color: rgba(255,255,255,0.7);
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* =========================
   SEARCH
========================= */

#search {
    padding: 12px 15px;
    width: min(320px, 90%);
    border-radius: 12px;
    border: none;
    outline: none;
    margin: 20px auto;
    display: block;
    font-size: 16px;
}

/* =========================
   PAGE PROJETS
========================= */

#mainaprojetpersonnel {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: clamp(40px, 7vw, 80px);
    gap: clamp(20px, 3vw, 30px);
}

/* =========================
   🔥 GRILLE FIXE 2 COLONNES (IMPORTANT)
========================= */

    .categories,
    .ligne2 {
        display: grid;
        grid-template-columns: repeat(2, minmax(280px, 1fr));
        gap: clamp(20px, 3vw, 30px);
        width: 100%;
        max-width: 1100px;
    }

/* =========================
   CATÉGORIES
========================= */

.categorie,
.categorie2,
.categorie3,
.categorie4 {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    padding: clamp(20px, 3.5vw, 40px);
    border-radius: 20px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    color: white;
}

/* =========================
   TITRES
========================= */

#sommaire h2 {
    margin-bottom: clamp(15px, 2.5vw, 30px);
    letter-spacing: 2px;
    font-size: clamp(16px, 2vw, 24px);
}

/* =========================
   BOUTONS
========================= */

.boutons-projets {
    display: flex;
    flex-direction: column;
    gap: clamp(10px, 1.5vw, 20px);
}

.btn-projet {
    text-decoration: none;
    color: white;
    background: rgba(255, 255, 255, 0.12);
    padding: clamp(10px, 1.5vw, 15px);
    border-radius: 12px;
    font-weight: 600;
    font-size: clamp(13px, 1.4vw, 16px);
    transition: all 0.3s ease;
    display: block;
}

.btn-projet:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.25);
}

/* =========================
   SEARCH FILTER ANIMATION
========================= */

.hidden {
    opacity: 0;
    pointer-events: none;
    transform: scale(0.9);
    transition: 0.3s;
}

/* =========================
   FOOTER
========================= */

footer {
    margin-top: auto;
    padding: clamp(14px, 2vw, 25px);
    font-size: clamp(11px, 1vw, 13px);
    text-align: center;
    color: rgba(255,255,255,0.7);
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* =========================
   TABLETTE
========================= */

@media (max-width: 1024px) {
    .menu-barre {
        width: 95%;
    }
}

/* =========================
   MOBILE
========================= */

@media (max-width: 768px) {
    #logo {
        position: relative;
        margin: 15px auto 0;
        display: block;
        text-align: center;
    }
    #mainaprojetpersonnel {
        margin: 0;
        padding: 0 10px;
    }

    .categories,
    .ligne2 {
        grid-template-columns: 1fr; /* 1 colonne sur mobile */
    }
}

/* =========================
   PETIT MOBILE
========================= */

@media (max-width: 500px) {

    .categorie,
    .categorie2,
    .categorie3,
    .categorie4 {
        padding: 15px;
        font-size: 13px;
    }

    .btn-projet {
        padding: 10px 12px;
        font-size: 13px;
    }
    #logo {
        position: relative;
        margin: 15px auto 0;
        display: block;
        text-align: center;
    }
}