/* =========================
   Palette de couleurs
   Moderne & épuré
   ========================= */

:root {
    --bg: #FFFFFF;
    --section: #F5F5F5;
    --text: #2D2D2D;
    --accent: #2F5D62;

    --white: #FFFFFF;
    --overlay: rgba(0, 0, 0, 0.45);
    --nav-bg: rgba(0, 0, 0, 0.65);
}

/* =========================
   Base du site
   ========================= */

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

html,
body {
    height: 100%;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* =========================
   Liens
   ========================= */

a {
    color: var(--accent);
    text-decoration: none;
    transition: 0.3s;
}

a:hover {
    opacity: 0.8;
}

/* =========================
   Navigation
   ========================= */

nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(6px);
    z-index: 1000;

    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 1rem 2rem;
}

nav ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

nav ul li {
    position: relative;
}

nav a {
    color: var(--white);
    font-weight: 500;
}

nav a:hover {
    color: var(--white);
}

/* =========================
   Menu déroulant Portfolio
   ========================= */

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;

    background: rgba(0, 0, 0, 0.85);
    min-width: 180px;

    border-radius: 6px;
    overflow: hidden;
}

.dropdown-content a {
    display: block;
    padding: 0.8rem 1rem;
    color: var(--white);
}

.dropdown-content a:hover {
    background: rgba(255, 255, 255, 0.1);
}

.dropdown:hover .dropdown-content {
    display: block;
}

/* =========================
   Contrôles à droite
   ========================= */

.right-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* =========================
   Boutons
   ========================= */

button,
.btn {
    background-color: var(--accent);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.2rem;
    cursor: pointer;
    border-radius: 4px;
    transition: 0.3s;
}

button:hover,
.btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/* =========================
   Bouton Facebook
   ========================= */

.fb {
    background: transparent;
    padding: 0;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
}

.fb img {
    display: block;
    max-height: 2rem;
    width: auto;
}

.fb:hover {
    opacity: 0.9;
}

/* =========================
   Diaporama arrière-plan
   ========================= */

.slideshow {
    position: fixed;
    inset: 0;
    z-index: -2;
}

.slideshow img {
    position: absolute;
    width: 100%;
    height: 100%;

    object-fit: cover;

    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.slideshow img.active {
    opacity: 1;
}

/* Assombrit légèrement les images */
.slideshow::after {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--overlay);
}

/* =========================
   Page d'accueil
   ========================= */

.content {
    min-height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;

    text-align: center;
    padding: 2rem;
}

.box {
    background: rgba(0, 0, 0, 0.45);
    color: var(--white);

    max-width: 850px;

    padding: 2.5rem;
    border-radius: 12px;

    backdrop-filter: blur(4px);
}

.box h1 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 1rem;
}

.box p {
    font-size: 1.2rem;
    line-height: 1.8;
}

/* =========================
   Sections
   ========================= */

section {
    background-color: var(--section);
    padding: 3rem 1.5rem;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.attribution {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 1001;
    font-size: 0.75rem;
    color: var(--white);
    background: rgba(0, 0, 0, 0.45);
    padding: 0.45rem 0.75rem;
    border-radius: 6px;
}

.attribution a {
    color: var(--white);
}

.attribution a:hover {
    opacity: 0.8;
}

/* =========================
   Galerie Portfolio
   ========================= */

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.gallery-grid img {
    width: 100%;
    height: 300px;
    object-fit: cover;

    border-radius: 6px;

    cursor: pointer;
    transition: 0.3s ease;
}

.gallery-grid img:hover {
    transform: scale(1.03);
}

/* =========================
   Titres
   ========================= */

h1,
h2,
h3 {
    color: var(--text);
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

/* =========================
   Responsive
   ========================= */

@media (max-width: 768px) {

    nav {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }

    .box h1 {
        font-size: 2.2rem;
    }

    .box p {
        font-size: 1rem;
    }
}

/* =========================
   Ajustements Mobile/Tablette
   ========================= */

@media (max-width: 768px) {

    .slideshow {
        position: absolute;
    }

    .slideshow img {
        object-fit: cover;
        object-position: center center;
    }

    .content {
        min-height: 100dvh;
    }

}