:root {
    --bg-main: #ffffff;
    --bg-alt: #f8f9fa;
    --text-primary: #333333;
    --text-muted: #666666;
    --accent-gold: #d4a843;
    --accent-gold-hover: #b88e30;
    --border-color: #e5e5e5;
    --font-heading: 'Cinzel', serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --transition-smooth: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: var(--bg-main);
    line-height: 1.7;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 2rem; }
.section-padding { padding: 7rem 0; }
.text-center { text-align: center; }

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--accent-gold);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 2px solid var(--accent-gold);
    border-radius: 10px;
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.4s var(--transition-smooth);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 0%; height: 100%;
    background-color: var(--accent-gold);
    transition: width 0.4s var(--transition-smooth);
    z-index: -1;
}

.btn:hover::before { width: 100%; }
.btn:hover { color: #ffffff; }

/* Header & Nav */
.header {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    z-index: 1000;
    padding: 2rem 0;
    transition: all 0.4s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.2rem 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.nav-container { display: flex; justify-content: space-between; align-items: center; }

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
    z-index: 1002;
}

.logo span { color: var(--accent-gold); }

.hamburger {
    width: 40px; height: 40px;
    background: transparent; border: none;
    cursor: pointer; z-index: 1002;
    display: flex; flex-direction: column;
    justify-content: center; align-items: flex-end; gap: 6px;
}

.hamburger-line {
    height: 2px;
    background-color: var(--text-primary);
    transition: all 0.4s var(--transition-smooth);
}

.hamburger-line:nth-child(1) { width: 32px; }
.hamburger-line:nth-child(2) { width: 24px; }
.hamburger-line:nth-child(3) { width: 16px; }

.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
    width: 30px; background-color: #ffffff;
}
.hamburger.active .hamburger-line:nth-child(2) { opacity: 0; }
.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
    width: 30px; background-color: #ffffff;
}

.nav-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100vh;
    background-color: var(--text-primary);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden;
    transition: all 0.5s var(--transition-smooth);
    z-index: 1001;
}

.nav-overlay.active { opacity: 1; visibility: visible; }
.nav-links { list-style: none; text-align: center; }

.nav-links li {
    margin: 2rem 0; opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s var(--transition-smooth);
}

.nav-overlay.active .nav-links li { opacity: 1; transform: translateY(0); }
.nav-links a { font-family: var(--font-heading); font-size: 2.5rem; color: #ffffff; }
.nav-links a:hover { color: var(--accent-gold); }

/* Hero */
.hero {
    position: relative;
    height: 100vh; width: 100%;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
    background: radial-gradient(circle at center, #ffffff 0%, #f4f4f4 100%);
}

#hero-canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 900px; padding: 0 1.5rem; }
.hero-title { font-family: var(--font-heading); font-size: 3.8rem; line-height: 1.15; color: var(--text-primary); margin-bottom: 1.5rem; }
.hero-title span { color: var(--accent-gold); display: block; }
.hero-description { font-size: 1.25rem; color: var(--text-muted); margin-bottom: 2.5rem; }

/* Portfolio */
.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 2.5rem; margin-top: 4rem; }
.portfolio-card { background: var(--bg-main); border: 1px solid var(--border-color); overflow: hidden; transition: transform 0.4s ease; }
.portfolio-card:hover { transform: translateY(-8px); }
.portfolio-img-wrapper { aspect-ratio: 16/10; overflow: hidden; }
.portfolio-img-wrapper img { width: 100%; height: 100%; object-fit: cover; }
.portfolio-info { padding: 2rem; }
.portfolio-category { font-size: 0.8rem; color: var(--accent-gold); text-transform: uppercase; font-weight: 700; margin-bottom: 0.5rem; display: block; }
.portfolio-card-title { font-family: var(--font-heading); font-size: 1.4rem; margin-bottom: 0.5rem; }
.portfolio-desc { font-size: 0.95rem; color: var(--text-muted); }
.portfolio-action { padding: 0 2rem 2rem 2rem; text-align: center; }
.btn-card { border-radius: 10px; width: 100%; }

/* Parallax */
.parallax-section {
    padding: 10rem 0;
    background-image: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url("../image/pose.jpg");
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    color: #ffffff;
    text-align: center;
}

#group-entreprise {
    display: none;
}

/* Formulaire & Radio */
.contact-wrapper { display: grid; grid-template-columns: 1fr 1.5fr; gap: 4rem; margin-top: 4rem; }
.contact-info { background-color: var(--bg-alt); padding: 3.5rem 2.5rem; border: 1px solid var(--border-color); }
.contact-info-item { margin-bottom: 2.5rem; }
.contact-form { display: flex; flex-direction: column; gap: 1.5rem; }
.form-group { position: relative; display: flex; flex-direction: column; }
.form-group label { font-size: 0.85rem; text-transform: uppercase; font-weight: 600; margin-bottom: 0.5rem; }
.form-control { width: 100%; padding: 1rem 1.2rem; border: 1px solid var(--border-color); outline: none; font-family: var(--font-body); font-size: 1rem; }
.form-control:focus { border-color: var(--accent-gold); }
textarea.form-control { min-height: 150px; resize: vertical; }

.radio-group { display: flex; gap: 2rem; margin-top: 0.5rem; }
.radio-label { display: flex; align-items: center; gap: 0.5rem; font-size: 0.95rem; cursor: pointer; text-transform: none; font-weight: 400; }
.radio-label input[type="radio"] { accent-color: var(--accent-gold); width: 18px; height: 18px; }

.error-message { font-size: 0.8rem; color: #d9534f; margin-top: 0.4rem; display: none; }
.form-group.error .form-control { border-color: #d9534f; }
.form-group.error .error-message { display: block; }
.form-status { padding: 1rem; margin-top: 1rem; display: none; text-align: center; font-weight: 600; }
.form-status.success { background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb; display: block; }

.back-to-top {
    position: fixed; bottom: 2rem; right: 2rem; width: 50px; height: 50px;
    background-color: var(--text-primary); color: var(--accent-gold);
    border: 1px solid var(--accent-gold); display: flex; align-items: center; justify-content: center;
    cursor: pointer; opacity: 0; visibility: hidden; transition: all 0.4s ease; z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; }

.reveal-on-scroll { opacity: 0; transform: translateY(40px); transition: all 0.8s var(--transition-smooth); }
.reveal-on-scroll.is-visible { opacity: 1; transform: translateY(0); }

.footer { background-color: var(--text-primary); color: #ffffff; padding: 4rem 0 2rem; text-align: center; }
.footer-bottom { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.05); color: #888888; font-size: 0.85rem; }

@media (max-width: 992px) { .contact-wrapper { grid-template-columns: 1fr; } .parallax-section { background-attachment: scroll; } }
@media (max-width: 768px) { .portfolio-grid { grid-template-columns: 1fr; } }