@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;700;800;900&display=swap');

/* Design System Premium Bâtiment Pro */
:root {
    --color-primary: #0F172A; /* Slate 900 - Deep Navy/Slate */
    --color-primary-light: #1E293B; /* Slate 800 */
    --color-accent: #F97316; /* Orange 500 - Safety Orange */
    --color-accent-hover: #EA580C; /* Orange 600 */
    --color-accent-light: #FFEDD5; /* Orange 100 */
    --color-bg: #F8FAFC; /* Slate 50 */
    --color-surface: #FFFFFF;
    --color-text: #334155; /* Slate 700 */
    --color-text-light: #64748B; /* Slate 500 */
    --color-white: #FFFFFF;
    --color-success: #10B981; /* Emerald 500 */
    --color-border: #E2E8F0; /* Slate 200 */
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-accent: 0 10px 25px -5px rgba(249, 115, 22, 0.4);
    
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--color-text); background: var(--color-bg); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4, h5 { font-family: var(--font-heading); color: var(--color-primary); font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; }
a { text-decoration: none; color: inherit; transition: var(--transition-fast); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }

/* Utilities */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 100px 0; }
.section-light { background: var(--color-surface); }
.section-bg { background: var(--color-bg); }
.section-dark { background: var(--color-primary); color: var(--color-white); }
.section-dark h2, .section-dark h3, .section-dark h4 { color: var(--color-white); }
.section-dark .section-desc { color: #94A3B8; }
.text-center { text-align: center; }

/* Typography */
.text-accent { color: var(--color-accent); }
.text-success { color: var(--color-success); }
.font-bold { font-weight: 700; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 16px 32px; border-radius: var(--radius-md); font-weight: 700; font-family: var(--font-heading); cursor: pointer; transition: var(--transition-smooth); border: none; font-size: 16px; letter-spacing: 0.5px; }
.btn i { margin-right: 10px; font-size: 1.1em; }
.btn-accent { background: var(--color-accent); color: var(--color-white); box-shadow: var(--shadow-accent); }
.btn-accent:hover { background: var(--color-accent-hover); transform: translateY(-3px); box-shadow: 0 15px 35px -5px rgba(249, 115, 22, 0.5); color: var(--color-white); }
.btn-outline { background: transparent; border: 2px solid var(--color-border); color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); transform: translateY(-3px); }
.btn-outline-white { background: transparent; border: 2px solid rgba(255,255,255,0.3); color: var(--color-white); }
.btn-outline-white:hover { background: var(--color-white); color: var(--color-primary); transform: translateY(-3px); }

/* Section Headers */
.section-header { margin-bottom: 60px; text-align: center; }
.badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; background: var(--color-accent-light); color: var(--color-accent); font-family: var(--font-heading); font-weight: 800; font-size: 13px; text-transform: uppercase; letter-spacing: 1.5px; border-radius: 50px; margin-bottom: 20px; }
.section-title { font-size: 2.8rem; margin-bottom: 20px; }
.section-desc { font-size: 1.15rem; color: var(--color-text-light); max-width: 650px; margin: 0 auto; line-height: 1.7; }

/* Header & Nav */
.header { position: fixed; width: 100%; top: 0; z-index: 1000; background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(0,0,0,0.05); transition: var(--transition-smooth); }
.header-container { display: flex; justify-content: space-between; align-items: center; height: 90px; }
.logo { font-size: 26px; font-family: var(--font-heading); font-weight: 900; color: var(--color-primary); display: flex; align-items: center; gap: 12px; letter-spacing: -0.5px; }
.logo i { color: var(--color-accent); font-size: 30px; }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { font-size: 15px; font-weight: 600; position: relative; color: var(--color-text); white-space: nowrap; }
.nav-links a:not(.btn)::after { content: ''; position: absolute; bottom: -6px; left: 0; width: 0; height: 2px; background: var(--color-accent); transition: var(--transition-smooth); }
.nav-links a:not(.btn):hover, .nav-links a.active:not(.btn) { color: var(--color-primary); }
.nav-links a:not(.btn):hover::after, .nav-links a.active:not(.btn)::after { width: 100%; }
.mobile-toggle { display: none; background: none; border: none; font-size: 24px; color: var(--color-primary); cursor: pointer; }

/* Hero Section */
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; overflow: hidden; background: var(--color-primary); color: var(--color-white); padding-top: 90px; }
.hero-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.4; }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.6) 100%); }
.hero-container { position: relative; z-index: 10; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 60px; align-items: center; width: 100%; }
.hero-content { animation: slideUp 1s ease forwards; opacity: 0; transform: translateY(30px); }
.hero h1 { color: var(--color-white); font-size: 4.2rem; margin-bottom: 25px; letter-spacing: -1.5px; line-height: 1.1; }
.hero h1 span { color: var(--color-accent); position: relative; }
.hero h1 span::after { content: ''; position: absolute; bottom: 8px; left: 0; width: 100%; height: 8px; background: var(--color-accent); opacity: 0.3; z-index: -1; }
.hero p { font-size: 1.25rem; color: #E2E8F0; margin-bottom: 40px; font-weight: 400; line-height: 1.7; max-width: 600px; }
.hero-btns { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 50px; }
.hero-trust { display: flex; gap: 30px; align-items: center; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 30px; }
.hero-trust-item { display: flex; align-items: center; gap: 10px; font-size: 0.95rem; font-weight: 600; color: #E2E8F0; }
.hero-trust-item i { color: var(--color-success); font-size: 1.2rem; }

/* Quick Quote Card (Hero Right) */
.hero-quote-card { background: rgba(255, 255, 255, 0.1); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border: 1px solid rgba(255, 255, 255, 0.2); padding: 40px; border-radius: var(--radius-xl); box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); animation: slideUp 1.2s ease forwards; opacity: 0; transform: translateY(30px); animation-delay: 0.2s; }
.hero-quote-card h3 { color: var(--color-white); font-size: 1.8rem; margin-bottom: 10px; }
.hero-quote-card p { color: #CBD5E1; font-size: 1rem; margin-bottom: 25px; }
.quote-form .form-group { margin-bottom: 15px; }
.quote-form input { width: 100%; padding: 15px 20px; border-radius: var(--radius-md); border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.05); color: var(--color-white); -webkit-text-fill-color: var(--color-white); color-scheme: dark; font-family: var(--font-body); font-size: 1rem; transition: var(--transition-fast); }
.quote-form input::placeholder { color: #94A3B8; }
.quote-form input:focus { outline: none; border-color: var(--color-accent); background: rgba(255,255,255,0.1); }
.quote-form select {
    width: 100%;
    padding: 15px 45px 15px 20px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,0.3);
    background: rgba(255, 255, 255, 0.95) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%230F172A" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><polyline points="6 9 12 15 18 9"></polyline></svg>') no-repeat right 16px center / 16px;
    background-color: rgba(255, 255, 255, 0.95);
    color: var(--color-primary);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
    transition: var(--transition-fast);
}
.quote-form select:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.15); }
.quote-form select option { color: var(--color-primary); }
.quote-form .btn { width: 100%; margin-top: 10px; padding: 18px; font-size: 1.1rem; }

/* Trust Strip (Bandeau Réassurance) */
.trust-strip { background: var(--color-surface); padding: 40px 0; border-bottom: 1px solid var(--color-border); position: relative; z-index: 20; box-shadow: var(--shadow-sm); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.trust-item { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.trust-icon { width: 60px; height: 60px; background: var(--color-bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 24px; color: var(--color-primary); transition: var(--transition-fast); }
.trust-item:hover .trust-icon { background: var(--color-accent-light); color: var(--color-accent); transform: scale(1.1); }
.trust-item h4 { font-size: 1.1rem; margin: 0; }
.trust-item p { font-size: 0.9rem; color: var(--color-text-light); margin: 0; }

/* Features/Services Cards */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.service-card { background: var(--color-surface); padding: 40px; border-radius: var(--radius-xl); box-shadow: var(--shadow-md); border: 1px solid var(--color-border); transition: var(--transition-smooth); position: relative; overflow: hidden; z-index: 1; }
.service-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: var(--color-accent); transition: var(--transition-smooth); transform: scaleX(0); transform-origin: left; }
.service-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-xl); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon { width: 70px; height: 70px; background: var(--color-accent-light); color: var(--color-accent); border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; font-size: 30px; margin-bottom: 25px; transition: var(--transition-smooth); }
.service-card:hover .service-icon { background: var(--color-accent); color: var(--color-white); }
.service-card h3 { font-size: 1.6rem; margin-bottom: 15px; }
.service-card p { color: var(--color-text-light); font-size: 1.05rem; }
.service-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 25px; font-weight: 700; color: var(--color-primary); font-family: var(--font-heading); }
.service-card:hover .service-link { color: var(--color-accent); }
.service-link i { transition: var(--transition-fast); }
.service-card:hover .service-link i { transform: translateX(5px); }

/* Process / How it works */
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; position: relative; }
.process-grid::before { content: ''; position: absolute; top: 40px; left: 100px; right: 100px; height: 2px; background: var(--color-border); border-style: dashed; z-index: 0; }
.process-step { position: relative; z-index: 1; text-align: center; }
.step-number { width: 80px; height: 80px; background: var(--color-surface); border: 2px solid var(--color-accent); color: var(--color-accent); font-family: var(--font-heading); font-size: 2rem; font-weight: 900; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 25px; box-shadow: 0 0 0 10px var(--color-bg); transition: var(--transition-smooth); }
.process-step:hover .step-number { background: var(--color-accent); color: var(--color-white); transform: scale(1.1); box-shadow: 0 0 0 10px rgba(249, 115, 22, 0.2); }
.process-step h3 { font-size: 1.5rem; margin-bottom: 15px; }
.process-step p { color: var(--color-text-light); }

/* Gallery / Realisations */
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; }
.gallery-item { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); aspect-ratio: 4/3; cursor: pointer; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1); border-radius: 0; }
.gallery-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(15,23,42,0.9) 0%, transparent 60%); display: flex; flex-direction: column; justify-content: flex-end; padding: 30px; opacity: 0; transition: var(--transition-smooth); }
.gallery-item:hover img { transform: scale(1.08); }
.gallery-item:hover .gallery-overlay { opacity: 1; }
.gallery-overlay h3 { color: var(--color-white); font-size: 1.5rem; margin-bottom: 5px; transform: translateY(20px); transition: var(--transition-smooth); }
.gallery-overlay p { color: var(--color-accent); font-weight: 600; text-transform: uppercase; font-size: 0.85rem; letter-spacing: 1px; transform: translateY(20px); transition: var(--transition-smooth); transition-delay: 0.05s; }
.gallery-item:hover .gallery-overlay h3, .gallery-item:hover .gallery-overlay p { transform: translateY(0); }

/* About Section */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-img-wrapper { position: relative; }
.about-img { border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.about-badge { position: absolute; bottom: -30px; right: -30px; background: var(--color-surface); padding: 30px; border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); display: flex; align-items: center; gap: 20px; border: 1px solid var(--color-border); }
.about-badge i { font-size: 40px; color: var(--color-accent); }
.about-badge div { font-family: var(--font-heading); }
.about-badge span { display: block; font-size: 28px; font-weight: 900; color: var(--color-primary); line-height: 1; }
.about-badge p { margin: 0; font-size: 13px; color: var(--color-text-light); font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-top: 5px; }
.about-list { list-style: none; margin-top: 40px; }
.about-list li { display: flex; align-items: center; gap: 15px; margin-bottom: 20px; font-weight: 600; font-size: 1.1rem; color: var(--color-primary); }
.about-list i { color: var(--color-success); font-size: 24px; }

/* Reviews / Google Style */
.reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 30px; }
.review-card { background: var(--color-surface); padding: 40px; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); border: 1px solid var(--color-border); display: flex; flex-direction: column; height: 100%; }
.review-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 20px; }
.review-author { display: flex; align-items: center; gap: 15px; }
.author-avatar { width: 50px; height: 50px; background: var(--color-accent-light); color: var(--color-accent); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-heading); font-weight: 800; font-size: 20px; }
.author-info h4 { margin-bottom: 2px; font-size: 1.1rem; }
.author-info span { font-size: 0.85rem; color: var(--color-text-light); display: flex; align-items: center; gap: 5px; }
.google-icon { width: 24px; height: 24px; }
.verified-badge { display: flex; align-items: center; gap: 6px; padding: 6px 12px; background: rgba(16, 185, 129, 0.1); color: var(--color-success); font-size: 12px; font-weight: 700; border-radius: 50px; }
.stars { color: #FBBF24; font-size: 16px; margin-bottom: 15px; letter-spacing: 2px; }
.review-text { font-size: 1.05rem; color: var(--color-text); line-height: 1.6; flex-grow: 1; }

/* Interventions Zone */
.zone-section { background: var(--color-primary); color: var(--color-white); padding: 80px 0; border-top: 1px solid rgba(255,255,255,0.1); }
.zone-content { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.zone-text h3 { font-size: 2rem; margin-bottom: 10px; color: var(--color-white); }
.zone-text p { color: #94A3B8; font-size: 1.1rem; }
.zone-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.zone-tag { padding: 8px 16px; background: rgba(255,255,255,0.1); border-radius: 50px; font-size: 0.9rem; font-weight: 600; }

/* Contact Forms */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info { background: var(--color-primary); color: var(--color-white); padding: 60px; border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); }
.contact-info h3 { color: var(--color-white); margin-bottom: 40px; font-size: 2rem; }
.contact-method { display: flex; gap: 20px; margin-bottom: 30px; }
.contact-method i { font-size: 24px; color: var(--color-accent); background: rgba(249, 115, 22, 0.1); padding: 15px; border-radius: 50%; }
.contact-method div h4 { color: var(--color-white); font-size: 1.2rem; margin-bottom: 5px; }
.contact-method div p { color: #94A3B8; font-size: 1.05rem; }
.contact-form { background: var(--color-surface); padding: 50px; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); border: 1px solid var(--color-border); }
.form-group { margin-bottom: 25px; }
.form-group label { display: block; margin-bottom: 10px; font-weight: 600; font-size: 0.95rem; color: var(--color-primary); }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 16px 20px; border: 1px solid var(--color-border); border-radius: var(--radius-md); font-family: var(--font-body); transition: var(--transition-fast); background: var(--color-bg); font-size: 1rem; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--color-accent); background: var(--color-surface); box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.1); }
.form-group button { width: 100%; padding: 18px; font-size: 1.1rem; }

/* CTA Section */
.cta-section { background: linear-gradient(135deg, var(--color-accent) 0%, #d95e0b 100%); text-align: center; padding: 120px 0; color: var(--color-white); position: relative; overflow: hidden; }
.cta-section::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI4IiBoZWlnaHQ9IjgiPgo8cmVjdCB3aWR0aD0iOCIgaGVpZ2h0PSI4IiBmaWxsPSIjZmZmIiBmaWxsLW9wYWNpdHk9IjAuMDUiLz4KPC9zdmc+') repeat; opacity: 0.3; }
.cta-section h2 { color: var(--color-white); font-size: 3.5rem; margin-bottom: 25px; position: relative; z-index: 2; }
.cta-section p { font-size: 1.3rem; color: rgba(255,255,255,0.9); margin-bottom: 40px; max-width: 600px; margin-left: auto; margin-right: auto; position: relative; z-index: 2; }
.cta-section .btn { position: relative; z-index: 2; background: var(--color-white); color: var(--color-accent); box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1); }
.cta-section .btn:hover { background: var(--color-bg); transform: translateY(-5px); box-shadow: 0 25px 30px -5px rgba(0, 0, 0, 0.15); }

/* Footer */
.footer { background: #020617; color: #94A3B8; padding: 100px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 60px; margin-bottom: 80px; }
.footer-logo { font-size: 28px; font-family: var(--font-heading); font-weight: 900; color: var(--color-white); display: flex; align-items: center; gap: 12px; margin-bottom: 25px; letter-spacing: -0.5px; }
.footer-logo i { color: var(--color-accent); }
.footer h4 { color: var(--color-white); font-size: 1.3rem; margin-bottom: 30px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 15px; }
.footer-links a { transition: var(--transition-fast); font-weight: 500; }
.footer-links a:hover { color: var(--color-accent); padding-left: 8px; }
.footer-contact { list-style: none; }
.footer-contact li { display: flex; gap: 15px; margin-bottom: 25px; align-items: flex-start; }
.footer-contact i { color: var(--color-accent); font-size: 20px; margin-top: 4px; }
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 0.95rem; }

/* Floating Action Button (Mobile) */
.fab-mobile { display: none; position: fixed; bottom: 20px; right: 20px; z-index: 999; background: var(--color-accent); color: var(--color-white); width: 60px; height: 60px; border-radius: 50%; align-items: center; justify-content: center; font-size: 24px; box-shadow: var(--shadow-accent); transition: var(--transition-smooth); animation: pulse 2s infinite; }
.fab-mobile:hover { transform: scale(1.1); }

/* Animations */
@keyframes slideUp { to { opacity: 1; transform: translateY(0); } }
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(249, 115, 22, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(249, 115, 22, 0); }
    100% { box-shadow: 0 0 0 0 rgba(249, 115, 22, 0); }
}

/* Scroll Reveal */
.reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }

/* Avant / Après Slider */
.ba-slider-container { width: 100%; max-width: 1000px; margin: 40px auto 0; border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-xl); border: 4px solid var(--color-surface); }
.ba-slider { position: relative; width: 100%; height: 500px; overflow: hidden; cursor: ew-resize; background: #000; }
.ba-slider img { width: 100%; height: 100%; object-fit: cover; object-position: center; pointer-events: none; border-radius: 0; }
.ba-img-after { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; }
.ba-img-before-wrap { position: absolute; top: 0; left: 0; width: 50%; height: 100%; overflow: hidden; z-index: 2; border-right: 3px solid var(--color-white); }
.ba-img-before { position: absolute; top: 0; left: 0; width: 100vw; max-width: 1000px; height: 100%; }
.ba-handle { position: absolute; top: 0; left: 50%; bottom: 0; width: 0; z-index: 10; pointer-events: none; }
.ba-arrows { position: absolute; top: 50%; left: 0; transform: translate(-50%, -50%); width: 44px; height: 44px; background: var(--color-accent); color: var(--color-white); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; box-shadow: 0 4px 10px rgba(0,0,0,0.3); border: 3px solid var(--color-white); }
.ba-tag { position: absolute; top: 20px; padding: 6px 16px; background: rgba(0,0,0,0.6); color: white; border-radius: 100px; font-size: 12px; font-weight: 700; backdrop-filter: blur(4px); z-index: 5; pointer-events: none; }
.ba-tag.before { left: 20px; }
.ba-tag.after { right: 20px; }

/* Calculateur dynamique */
.price-result { margin-top: 25px; padding: 20px; background: rgba(255,255,255,0.1); border-radius: var(--radius-md); border: 1px solid rgba(255,255,255,0.2); text-align: center; display: none; animation: slideUp 0.4s ease; }
.price-result.active { display: block; }
.price-result p { font-size: 0.9rem; color: #CBD5E1; margin-bottom: 5px; }
.price-result h4 { font-size: 2rem; color: var(--color-accent); margin: 0; line-height: 1; font-family: var(--font-heading); }

/* Responsive Adjustments */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-content { display: flex; flex-direction: column; align-items: center; }
    .hero h1 { font-size: 3.5rem; }
    .hero-btns, .hero-trust { justify-content: center; }
    .hero-quote-card { max-width: 500px; margin: 0 auto; text-align: left; }
    .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 50px; }
    .process-grid::before { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 1140px) {
    .header-container { height: 80px; }
    .nav-links { display: none; position: absolute; top: 80px; left: 0; width: 100%; height: calc(100vh - 80px); overflow-y: auto; background: var(--color-surface); flex-direction: column; align-items: flex-start; gap: 4px; padding: 30px; box-shadow: var(--shadow-lg); border-top: 1px solid var(--color-border); }
    .nav-links a:not(.btn) { width: 100%; padding: 14px 0; border-bottom: 1px solid var(--color-border); display: flex; justify-content: space-between; align-items: center; }
    .nav-links a:not(.btn)::after { display: none; }
    .nav-links a.btn { margin-top: 20px; width: 100%; text-align: center; justify-content: center; }
    .nav-links.active { display: flex; }
    .mobile-toggle { display: block; }
    
    .section { padding: 60px 0; }
    .hero { padding-top: 100px; min-height: auto; padding-bottom: 60px; }
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.1rem; }
    .trust-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
    .process-grid { grid-template-columns: 1fr; gap: 30px; }
    .ba-slider { height: 350px; }
    
    .section-title { font-size: 2rem; }
    .footer-grid { grid-template-columns: 1fr; }
    .about-badge { right: 0; bottom: -20px; left: 0; margin: 0 20px; justify-content: center; }
    
    .zone-content { flex-direction: column; text-align: center; }
    .zone-tags { justify-content: center; }
    
    .fab-mobile { display: flex; } /* Show FAB on mobile */
}

@media (max-width: 480px) {
    .hero-btns { flex-direction: column; width: 100%; }
    .hero-btns .btn { width: 100%; }
    .trust-grid { grid-template-columns: 1fr; gap: 30px; }
}

/* Stats Section */
.hero-stats { display: flex; flex-wrap: wrap; gap: 30px; }
.stat-item { background: var(--color-surface); padding: 30px 40px; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); text-align: center; flex: 1; min-width: 200px; border-bottom: 4px solid var(--color-primary); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.stat-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.stat-item h4 { font-size: 3rem; font-family: var(--font-heading); margin-bottom: 10px; line-height: 1; }
.stat-item p { color: var(--color-text-light); font-weight: 500; text-transform: uppercase; letter-spacing: 1px; font-size: 0.9rem; margin: 0; }

/* Added for 4-column process grid */
.process-grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 768px) { .process-grid-4 { grid-template-columns: 1fr !important; } }

/* Project Detail grids */
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: 60px; }
.grid-2-even { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
@media (max-width: 768px) { .grid-2-1, .grid-2-even { grid-template-columns: 1fr !important; gap: 30px !important; } }

@media (max-width: 768px) {
    .contact-info { padding: 30px; }
    .contact-form { padding: 25px; }
    .contact-info h3 { font-size: 1.5rem; }
    .contact-method div h4 { font-size: 1.1rem; }
    .form-group input, .form-group textarea, .form-group select { padding: 12px 15px; }
}

/* Navigation Dropdown */
.nav-dropdown { position: relative; display: inline-block; }
.nav-dropdown-menu { 
    display: none; 
    position: absolute; 
    top: 100%; 
    left: 0; 
    background-color: var(--color-surface); 
    min-width: 250px; 
    box-shadow: var(--shadow-lg); 
    border-radius: var(--radius-md); 
    z-index: 1000; 
    padding: 10px 0; 
    border-top: 3px solid var(--color-accent);
}
.nav-dropdown:hover .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a { 
    color: var(--color-text) !important; 
    padding: 12px 20px; 
    text-decoration: none; 
    display: block; 
    transition: background 0.3s, color 0.3s;
    font-size: 0.95rem;
    font-weight: 500;
}
.nav-dropdown-menu a:hover { 
    background-color: var(--color-bg); 
    color: var(--color-accent) !important; 
}
.nav-dropdown-menu a::after { display: none !important; }

@media (max-width: 1140px) {
    .nav-dropdown {
        width: 100%;
        display: flex;
        flex-direction: column;
    }
    .nav-dropdown > a {
        display: flex !important;
        justify-content: space-between;
        align-items: center;
        border-bottom: none !important;
    }
    .nav-dropdown-menu {
        position: static;
        box-shadow: none;
        border-top: none;
        background: rgba(0, 0, 0, 0.02);
        padding-left: 20px;
        padding-right: 20px;
        border-radius: 8px;
        display: none !important; /* Hidden by default */
        flex-direction: column;
        width: 100%;
        margin-bottom: 10px;
    }
    .nav-dropdown-menu.open {
        display: flex !important;
    }
    .nav-dropdown-menu a {
        border-bottom: 1px solid rgba(0,0,0,0.05) !important;
        padding: 12px 0 !important;
        font-size: 0.9rem !important;
    }
    .nav-dropdown-menu a:last-child {
        border-bottom: none !important;
    }
}