/* --- DESIGN SYSTEM DARK CYBER GREEN --- */
:root {
    /* Fond profond et élégant (légèrement bleuté/gris pour la profondeur) */
    --bg-base: #0B0F19;
    --bg-surface: #111827;   /* Pour les cartes et sections alternatives */
    --bg-card: rgba(255, 255, 255, 0.03);

    /* Couleurs de texte principales */
    --text-main: #F8FAFC;
    --text-secondary: #94A3B8;

    /* LE NOUVEAU VERT ACCENT (Vibrant et Tech) */
    --accent: #4ADE80;       /* Un vert néon/émeraude très lumineux */
    --accent-glow: rgba(74, 222, 128, 0.15); /* Pour les halos de lumière */

    /* Bordures fines style Glassmorphism */
    --border-light: rgba(255, 255, 255, 0.06);

    --font-main: 'Inter', sans-serif;
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- RESET & BASE --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
.scroll-smooth { scroll-behavior: smooth; scroll-padding-top: 100px; }

body {
    font-family: var(--font-main);
    background-color: var(--bg-base);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.text-secondary { color: var(--text-secondary); }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 5vw; }

/* --- ANIMATIONS AU SCROLL --- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* --- NAVBAR (Glassmorphism Sombre) --- */
.navbar {
    position: fixed; top: 0; width: 100%; height: 90px; z-index: 1000;
    background: rgba(11, 15, 25, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
    display: flex; align-items: center;
}
.flex-nav { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 900; color: var(--text-main); text-decoration: none; letter-spacing: -0.5px; }
.logo span { color: var(--accent); }

.nav-links { display: flex; list-style: none; gap: 2.5rem; align-items: center; }
.nav-links a { text-decoration: none; color: var(--text-secondary); font-weight: 500; transition: var(--transition-smooth); }
.nav-links a:hover { color: var(--text-main); }
.btn-nav { border: 1px solid var(--border-light); padding: 0.6rem 1.2rem; border-radius: 8px; color: var(--text-main) !important; background: var(--bg-card); transition: var(--transition-smooth); }
.btn-nav:hover { border-color: var(--accent); background: var(--accent-glow); box-shadow: 0 0 15px var(--accent-glow); }

/* --- HERO SECTION --- */
.hero-premium {
    min-height: 100vh; display: flex; align-items: center;
    position: relative; padding-top: 90px; overflow: hidden;
}

/* Texture Grille */
.bg-grid {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: -2;
    background-image: radial-gradient(var(--border-light) 1px, transparent 1px);
    background-size: 30px 30px;
}

/* Halo de lumière Vert subtil */
.glow-orb {
    position: absolute; top: -10%; left: 50%; transform: translateX(-50%);
    width: 600px; height: 600px; background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    z-index: -1; filter: blur(60px); opacity: 0.8;
}

.badge { display: inline-block; padding: 0.4rem 1rem; border: 1px solid var(--accent); color: var(--accent); border-radius: 99px; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 2rem; background: rgba(74, 222, 128, 0.05); }

.hero-premium h1 {
    font-size: clamp(2.5rem, 6vw, 5rem); font-weight: 900; line-height: 1.1; margin-bottom: 1.5rem; max-width: 900px; letter-spacing: -1px;
}
.hero-premium h1 strong {
    background: linear-gradient(135deg, #4ADE80, #A3E635);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.subtitle { font-size: 1.25rem; max-width: 600px; margin-bottom: 3rem; color: var(--text-secondary); }

.hero-btns { display: flex; align-items: center; gap: 2rem; }
.btn-main { display: inline-flex; justify-content: center; background: var(--text-main); color: var(--bg-base); padding: 1.2rem 2.5rem; border-radius: 8px; text-decoration: none; font-weight: 800; border: none; cursor: pointer; transition: var(--transition-smooth); font-size: 1rem; }
.btn-main:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(255, 255, 255, 0.15); }
.btn-text { text-decoration: none; color: var(--text-secondary); font-weight: 600; transition: var(--transition-smooth); }
.btn-text:hover { color: var(--accent); }

/* --- SERVICES --- */
.services-premium { padding: 8rem 0; border-top: 1px solid var(--border-light); }
.grid-services { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.service-card { background: var(--bg-card); padding: 3rem; border-radius: 16px; border: 1px solid var(--border-light); transition: var(--transition-smooth); }
.service-card:hover, .service-card.active { border-color: var(--accent); background: linear-gradient(180deg, var(--bg-card), rgba(74, 222, 128, 0.02)); transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0,0,0,0.2); }
.icon-box { font-size: 2.5rem; color: var(--accent); margin-bottom: 1.5rem; }
.service-card h3 { font-size: 1.5rem; margin-bottom: 1rem; font-weight: 700; }

/* --- PORTFOLIO --- */
.portfolio-premium { padding: 8rem 0; background: var(--bg-surface); }
.section-header h2 { font-size: 2.5rem; font-weight: 900; margin-bottom: 4rem; letter-spacing: -0.5px; }
.section-header h2 span { color: var(--text-secondary); font-weight: 400; }
.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 3rem; }

.project-card { cursor: pointer; text-decoration: none; color: inherit; display: block; }

.project-img {
    aspect-ratio: 16/10;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-light);
    background-size: cover;
    background-position: center;
    overflow: hidden;
    position: relative;
}

.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover .project-img img { transform: scale(1.05); }
.project-card:hover .project-img { border-color: var(--accent); box-shadow: 0 10px 30px rgba(0,0,0,0.3); }

.tag { font-size: 0.75rem; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 1px; }
.project-info h3 { font-size: 1.4rem; margin-top: 0.5rem; font-weight: 600; }

/* --- OFFRES (Prix de base) --- */
.pricing-premium { padding: 8rem 0; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; align-items: center; }
.price-item { background: var(--bg-surface); padding: 3.5rem 2.5rem; border-radius: 16px; border: 1px solid var(--border-light); text-align: center; position: relative; transition: var(--transition-smooth); }
.price-item.featured { border: 1px solid var(--accent); box-shadow: 0 0 40px var(--accent-glow); z-index: 2; padding: 4.5rem 2.5rem; }
.price-value { font-size: 2.8rem; font-weight: 900; margin: 1.5rem 0; color: var(--accent); letter-spacing: -1px; }
.popular { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--accent); color: var(--bg-base); padding: 0.4rem 1.2rem; border-radius: 99px; font-size: 0.75rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.5px; }
.features-list { list-style: none; margin-top: 2rem; border-top: 1px solid var(--border-light); padding-top: 2rem; text-align: left; }
.features-list li { margin-bottom: 0.9rem; color: var(--text-main); font-size: 0.95rem; display: flex; align-items: center; }
.features-list li::before { content: '✓'; color: var(--accent); margin-right: 12px; font-weight: bold; font-size: 1.1rem; }

/* --- NOUVEAU : TOGGLE SWITCH DES OFFRES --- */
.pricing-toggle-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 3rem;
    margin-bottom: 2rem;
}

.toggle-label { font-size: 1.1rem; font-weight: 600; color: var(--text-secondary); transition: var(--transition-smooth); cursor: pointer; }
.toggle-label.active { color: var(--text-main); }

.switch { position: relative; display: inline-block; width: 60px; height: 34px; }
.switch input { opacity: 0; width: 0; height: 0; }

.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--bg-surface); border: 2px solid var(--border-light); transition: .4s; border-radius: 34px; }
.slider:before { position: absolute; content: ""; height: 24px; width: 24px; left: 3px; bottom: 3px; background-color: var(--text-secondary); transition: .4s; border-radius: 50%; }

input:checked + .slider { background-color: var(--accent-glow); border-color: var(--accent); }
input:checked + .slider:before { transform: translateX(26px); background-color: var(--accent); }

/* Animation du Switch de Grilles */
.pricing-grid { transition: opacity 0.4s ease, transform 0.4s ease; }
.hidden-grid { display: none !important; opacity: 0; transform: translateY(20px); }
.active-grid { display: grid; opacity: 1; transform: translateY(0); animation: fadeInGrid 0.5s ease forwards; }

@keyframes fadeInGrid {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.price-value span { font-size: 1.2rem; color: var(--text-secondary); font-weight: 500; }

/* --- CONTACT --- */
.contact-premium { padding: 8rem 0; background: var(--bg-surface); border-top: 1px solid var(--border-light); }
.contact-card { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; background: var(--bg-base); padding: 5rem 4rem; border-radius: 24px; border: 1px solid var(--border-light); box-shadow: 0 20px 50px rgba(0,0,0,0.3); }
.contact-content h2 { font-size: clamp(2.2rem, 4vw, 3.5rem); margin-bottom: 1.5rem; font-weight: 900; letter-spacing: -1px; }
.contact-content h2 strong { color: var(--accent); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.full-width { grid-column: 1 / -1; }
input, textarea { width: 100%; padding: 1.2rem; border-radius: 8px; border: 1px solid var(--border-light); background: rgba(255,255,255,0.02); color: white; font-family: inherit; font-size: 1rem; transition: var(--transition-smooth); outline: none; }
input:focus, textarea:focus { border-color: var(--accent); background: rgba(255,255,255,0.05); box-shadow: 0 0 10px var(--accent-glow); }
textarea { height: 140px; resize: vertical; }

/* --- FOOTER --- */
.footer-premium { padding: 3rem 0; text-align: center; color: var(--text-secondary); font-size: 0.9rem; border-top: 1px solid var(--border-light); background: var(--bg-base); }

/* --- BOUTON RETOUR EN HAUT --- */
.back-to-top {
    position: fixed; bottom: 30px; right: 30px; width: 50px; height: 50px; background: var(--bg-surface); color: var(--accent); border: 1px solid var(--accent); border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 999;
    opacity: 0; visibility: hidden; transform: translateY(20px); transition: var(--transition-smooth); box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}
.back-to-top svg { width: 24px; height: 24px; }
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--accent); color: var(--bg-base); box-shadow: 0 0 20px var(--accent-glow); transform: translateY(-3px); }

/* --- RESPONSIVE DESIGN AVANCÉ --- */

/* 1. TABLETTES (Moins de 992px) */
@media (max-width: 992px) {
    .contact-card { grid-template-columns: 1fr; padding: 4rem 2.5rem; text-align: center; gap: 3rem; }
    .services-premium, .portfolio-premium, .pricing-premium, .contact-premium { padding: 6rem 0; }
}

/* 2. SMARTPHONES (Moins de 768px) - CORRECTIF ANTI-DÉBORDEMENT */
@media (max-width: 768px) {
    html, body { overflow-x: hidden; width: 100%; max-width: 100vw; }
    .services-premium, .portfolio-premium, .pricing-premium, .contact-premium { padding: 4rem 0; }
    .container { padding: 0 5vw; width: 100%; overflow: hidden; }

    .navbar { height: 75px; }
    .menu-toggle { display: flex; z-index: 1001; background: transparent; border: none; flex-direction: column; gap: 6px; cursor: pointer; }
    .bar { width: 28px; height: 2px; background: var(--text-main); transition: var(--transition-smooth); border-radius: 2px; }

    .nav-links { position: fixed; top: -110vh; left: 0; width: 100%; height: 100vh; background: var(--bg-base); flex-direction: column; justify-content: center; transition: top 0.5s cubic-bezier(0.77, 0, 0.175, 1); gap: 2rem; padding: 20px; z-index: 1000; }
    .nav-links.active { top: 0; }
    .nav-links a { font-size: 1.8rem; font-weight: 800; color: var(--text-main); }

    .menu-toggle.is-active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); background-color: var(--accent); }
    .menu-toggle.is-active .bar:nth-child(2) { transform: translateY(-8px) rotate(-45deg); background-color: var(--accent); }

    .hero-premium h1 { font-size: 2.2rem; margin-bottom: 1rem; }
    .subtitle { font-size: 1.05rem; margin-bottom: 2rem; }
    .section-header h2 { font-size: 2rem; margin-bottom: 2.5rem; }

    .hero-premium { padding-top: 100px; text-align: center; }
    .hero-btns { flex-direction: column; align-items: stretch; gap: 1rem; width: 100%; }
    .btn-main { width: 100%; display: block; }

    .portfolio-grid, .grid-services, .pricing-grid { grid-template-columns: 1fr; gap: 2rem; width: 100%; }

    .project-card, .service-card { width: 100%; max-width: 100%; }
    .price-item.featured { padding: 3rem 1.5rem; transform: none; width: 100%; }
    .contact-card { padding: 2.5rem 1.5rem; border-radius: 16px; width: 100%; }

    .form-grid { grid-template-columns: 1fr; }
    input, textarea { max-width: 100%; }

    .pricing-toggle-wrapper { flex-direction: column; gap: 1rem; }

    .back-to-top { bottom: 20px; right: 20px; width: 45px; height: 45px; }
}

/* 3. PETITS SMARTPHONES (Moins de 480px) */
@media (max-width: 480px) {
    .hero-premium h1 { font-size: 2.1rem; }
    .price-value { font-size: 2.2rem; }
    .icon-box { font-size: 2rem; margin-bottom: 1rem; }
    .service-card { padding: 2rem 1.5rem; }
}