/* Variables de couleurs : Dominante Noir/Blanc, accent Rouge */
:root {
    --bg-color: #050505;
    --text-color: #f0f0f0;
    --accent-color: #d90000;
    --border-color: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
}

/* Header & Menus */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 20px 40px;
    background: rgba(5, 5, 5, 0.95);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.main-menu ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

.main-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 14px;
    letter-spacing: 2px;
    transition: color 0.3s;
}

.main-menu a:hover {
    color: var(--accent-color);
}

.lang-selector button {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    margin-left: 10px;
    font-weight: bold;
    transition: color 0.3s;
}

.lang-selector button:hover {
    color: var(--accent-color);
}

/* Sections */
section {
    min-height: 100vh;
    padding: 100px 40px 40px 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.content {
    width: 100%;
    max-width: 1000px;
    text-align: center;
}

h1 {
    font-size: 3rem;
    margin-bottom: 30px;
    letter-spacing: 5px;
    text-transform: uppercase;
}

/* Formulaire Contact */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 500px;
    margin: 0 auto;
}

.contact-form input, .contact-form textarea {
    padding: 15px;
    background: #111;
    border: 1px solid var(--border-color);
    color: white;
}

.contact-form button {
    padding: 15px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    cursor: pointer;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Sous-menu Réalisations */
.sub-menu {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 40px;
}

.sub-menu li {
    cursor: pointer;
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.sub-menu li.active, .sub-menu li:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* Contenu des onglets */
.tab-pane {
    display: none;
}
.tab-pane.active {
    display: block;
}

/* Vidéo & Sliders basiques */
.video-container video, .slider img {
    width: 100%;
    max-width: 800px;
    border: 1px solid var(--border-color);
}

.slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
}

.slider img {
    display: none;
}
.slider img.active {
    display: block;
}

.prev, .next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    padding: 15px;
    cursor: pointer;
    font-size: 18px;
}
.next { right: 0; }
.prev { left: 0; }

/* Home Staging Avant/Après */
.before-after-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
}

.img-after, .img-before-wrapper {
    width: 100%;
    display: block;
}

.img-before-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 50%; /* Démarrage à 50% */
    overflow: hidden;
}

.img-before {
    width: 800px; /* Doit correspondre au max-width du container */
    height: 100%;
    object-fit: cover;
}

.slider-ba {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: ew-resize;
    z-index: 10;
}

.slider-button {
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    background: var(--accent-color);
    pointer-events: none;
}

/* Footer */
footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 40px;
    background-color: #000;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
}

.footer-center a {
    color: var(--text-color);
    text-decoration: none;
}
.footer-center a:hover {
    color: var(--accent-color);
}
.footer-right {
    text-align: right;
}
.logo-placeholder {
    width: 150px;
    height: 50px;
    border: 1px dashed var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
}