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

:root {
    --bg-black: #000000;
    --bg-dark: #050506;
    --bg-panel: #0A0A0C;
    --text-white: #FFFFFF;
    --text-grey: #8E8E93;
    --accent-orange: #FF8000;
    --accent-blue: #87CFEB;
    --border-subtle: rgba(255, 255, 255, 0.04);
    --glow-orange: rgba(255, 128, 0, 0.06);
    --glow-blue: rgba(135, 207, 235, 0.06);
}

/* Sélection & Scrollbar Cyber Minimaliste */
::selection { background: rgba(255, 128, 0, 0.25); color: var(--text-white); }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-thumb { background: #1C1C1E; border-radius: 100px; }

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

/* 1. SÉCURISATION DU SCROLL MAÎTRE */
html { 
    scroll-behavior: smooth; 
    background-color: var(--bg-black); 
    overflow-x: hidden;
}

body {
    background-color: var(--bg-black);
    background-image: radial-gradient(circle at 50% -20%, #0D0D14 0%, #000000 70%);
    color: var(--text-white); 
    font-family: 'Inter', sans-serif; 
    line-height: 1.6;
    -webkit-font-smoothing: antialiased; 
    overflow-x: hidden;
    width: 100%;
    padding-top: 76px; /* Compense la hauteur du menu fixe */
}

.container { width: 100%; padding: 0 6vw; margin: 0 auto; }
.fade-in-up { opacity: 0; transform: translateY(15px); transition: opacity 0.8s ease, transform 0.8s ease; }
.fade-in-up.visible { opacity: 1; transform: translateY(0); }

/* 2. NAVBAR FIXE PC ET MOBILE */
header { 
    width: 100%; 
    background-color: rgba(0, 0, 0, 0.75); 
    backdrop-filter: blur(24px); 
    border-bottom: 1px solid var(--border-subtle); 
    position: fixed; 
    top: 0; 
    left: 0;
    z-index: 1000; 
}
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 1.2rem 6vw; }
.nav-logo img { max-height: 38px; width: auto; display: block; }
.menu-toggle, .burger-label { display: none; }
.nav-links { display: flex; align-items: center; gap: 1.4vw; list-style: none; background: transparent !important; }
.nav-links a { color: var(--text-white); background: transparent !important; text-decoration: none; text-transform: uppercase; font-size: 0.82rem; font-weight: 600; letter-spacing: 0.04em; transition: opacity 0.2s ease; position: relative; padding: 0.5rem 0; opacity: 0.7; border: none !important; box-shadow: none !important; }
.nav-links a:hover, .nav-links a.active { opacity: 1; background: transparent !important; }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 1px; background-color: var(--accent-orange); transform: scaleX(0); transition: transform 0.3s ease; }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

@media (max-width: 1340px) {
    .burger-label { display: flex; cursor: pointer; flex-direction: column; gap: 6px; z-index: 1002; }
    .burger-label span { width: 22px; height: 1.5px; background-color: var(--text-white); }
    
    /* FIX MOBILE ABSOLU : visibility supprime la zone fantôme à droite */
    .nav-links { 
        position: fixed; 
        top: 0; 
        right: 0; 
        transform: translateX(100%); 
        visibility: hidden; /* Désactive le bloc pour le scroll mobile tant qu'il est fermé */
        width: 100%; /* Remplacement de 100vw pour éviter le débordement iOS */
        height: 100vh; 
        background-color: #000000 !important; 
        border-left: none; 
        flex-direction: column; 
        justify-content: center; 
        align-items: center; 
        padding: 0; 
        gap: 1.5rem; 
        transition: transform 0.4s ease, visibility 0.4s ease; 
        z-index: 1001; 
    }
    
    .nav-links a {
        font-size: 1.3rem; 
        padding: 10px 0;
        opacity: 1;
    }

    .menu-toggle:checked ~ .nav-links { 
        transform: translateX(0); 
        visibility: visible; /* Réactive le bloc à l'ouverture */
    }
}

/* 3. STRUCTURE DES SECTIONS */
.section-full { width: 100%; padding: 3.5rem 0; position: relative; }
.section-dark { background-color: var(--bg-dark); border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); }

.section-full + .section-full, 
.section-dark + .section-full { padding-top: 0; }

h1 { font-size: clamp(2.6rem, 5.2vw, 4.8rem); font-weight: 900; text-transform: uppercase; line-height: 1.05; margin-bottom: 2rem; letter-spacing: -0.03em; }
.hero-title-full { font-size: clamp(2.4rem, 5.2vw, 4.8rem); font-weight: 900; text-transform: uppercase; line-height: 1.05; margin-bottom: 3.5rem; letter-spacing: -0.03em; }
.equation-title { font-size: clamp(1.8rem, 3.8vw, 3.2rem); font-weight: 900; margin-bottom: 2rem; text-transform: uppercase; }

.subtitle, .step-body, .autopsy-desc, .pillar-text, .comparison-text, .mandate-text { 
    color: var(--text-white) !important; 
    font-size: clamp(0.95rem, 1.1vw, 1.05rem); 
    line-height: 1.65; 
    font-weight: 400; 
}
.subtitle { margin-bottom: 2rem; font-size: clamp(1.1rem, 1.3vw, 1.2rem); }

strong { color: var(--text-white); font-weight: 700; }
.focus-orange { color: var(--accent-orange); font-weight: 400; }

.row-flex { display: flex; flex-direction: row; align-items: center; justify-content: space-between; gap: 6vw; padding: 3.5rem 0; border-top: 1px solid var(--border-subtle); width: 100%; }
.row-flex.reverse { flex-direction: row-reverse; }
.row-text { flex: 1; max-width: 48%; }

/* Cadres Photo / Loupe */
.image-wrapper { flex: 1; max-width: 46%; border: 1px solid var(--border-subtle); background-color: #080809; overflow: hidden; display: flex; align-items: center; justify-content: center; position: relative; cursor: crosshair; box-shadow: 0 10px 30px rgba(0,0,0,0.5); transition: border-color 0.4s ease, box-shadow 0.4s ease; }
.hero-split .image-wrapper { max-width: 525px; flex: 1; }
.image-wrapper img { width: 100%; height: auto; display: block; object-fit: contain; opacity: 0.8; filter: brightness(0.9) contrast(1.1); transform-origin: center center; transition: transform 0.25s ease, filter 0.3s ease, opacity 0.3s ease; }
.image-wrapper:hover { border-color: rgba(135, 207, 235, 0.35); box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), 0 0 25px var(--glow-blue); }
.image-wrapper:hover img { transform: scale(1.5); opacity: 1; filter: brightness(1.35) contrast(1.2); }

.row-flex.orange-hover:hover .image-wrapper { border-color: rgba(255, 128, 0, 0.35); box-shadow: 0 20px 40px rgba(0,0,0,0.6), 0 0 25px var(--glow-orange); }
.row-flex.white-hover:hover .image-wrapper { border-color: rgba(255, 255, 255, 0.25); box-shadow: 0 20px 40px rgba(0,0,0,0.6); }
.row-flex.blue-hover:hover .image-wrapper { border-color: rgba(135, 207, 235, 0.35); box-shadow: 0 20px 40px rgba(0,0,0,0.6), 0 0 25px var(--glow-blue); }

.step-meta { font-size: 0.85rem; text-transform: uppercase; color: var(--accent-orange); letter-spacing: 0.15em; margin-bottom: 0.75rem; font-weight: 600; }
.row-flex.white-hover .step-meta { color: var(--text-white); }
.row-flex.blue-hover .step-meta { color: var(--accent-blue); }
.step-heading { font-size: clamp(1.8rem, 2.6vw, 2.6rem); font-weight: 900; text-transform: uppercase; margin-bottom: 1.5rem; letter-spacing: -0.01em; line-height: 1.1; }

.highlight-blue { background: linear-gradient(135deg, #FFF 30%, var(--accent-blue) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.highlight-orange { background: linear-gradient(135deg, #FFF 30%, var(--accent-orange) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

/* Double filet bleu KPI */
.kpi-wrapper { width: 100%; border-top: 4px double var(--accent-blue); border-bottom: 4px double var(--accent-blue); background-color: var(--bg-dark); padding: 3.5rem 6vw; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 3rem; text-align: center; }
.kpi-item { flex: 1; min-width: 240px; }
.kpi-number { font-size: clamp(3.2rem, 5.5vw, 4.8rem); font-weight: 900; display: block; line-height: 1; margin-bottom: 0.5rem; letter-spacing: -0.02em; }
.kpi-label { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-white); font-weight: 600; }

/* Diagnostic Clinique */
.autopsy-block { background-color: var(--bg-panel); border-left: 3px solid var(--accent-orange); padding: 3.5rem 3rem; margin-top: 2.5rem; border-top: 1px solid var(--border-subtle); border-right: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); }
.autopsy-title { font-size: 1.3rem; text-transform: uppercase; margin-bottom: 2rem; font-weight: 900; letter-spacing: 0.05em; }
.autopsy-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.autopsy-item { border: 1px solid var(--border-subtle); padding: 2rem 1.8rem; background: rgba(255, 255, 255, 0.005); transition: border-color 0.3s ease, background 0.3s ease; }
.autopsy-item:hover { border-color: rgba(255, 128, 0, 0.25); background: rgba(255, 128, 0, 0.01); }
.autopsy-metric { color: var(--accent-orange); font-size: 0.95rem; text-transform: uppercase; margin-bottom: 0.75rem; font-weight: 900; letter-spacing: 0.02em; }

/* Piliers */
.pillars-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2.5rem; margin-top: 3rem; }
.pillar-card { background: var(--bg-panel); border: 1px solid var(--border-subtle); padding: 3.5rem 2.5rem; transition: border-color 0.4s ease, box-shadow 0.4s ease, transform 0.4s ease; text-align: center; }
.pillar-card:hover { transform: translateY(-4px); border-color: var(--accent-orange) !important; box-shadow: 0 20px 40px rgba(0,0,0,0.6), 0 0 25px var(--glow-orange); }
.pillar-icon { height: 140px; width: 100%; object-fit: contain; display: block; margin: 0 auto 2rem auto; opacity: 0.8; transition: transform 0.4s ease; }
.pillar-card:hover .pillar-icon { transform: scale(1.04) translateY(-2px); opacity: 1; }
.pillar-title { font-size: 1.4rem; text-transform: uppercase; margin-bottom: 0.5rem; font-weight: 900; }
.pillar-phase { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--accent-orange); margin-bottom: 2rem; display: block; font-weight: 600; }
.pillar-result { color: var(--accent-blue); font-size: 1.05rem; border-top: 1px solid var(--border-subtle); padding-top: 1.2rem; text-align: left; font-weight: 600; }

.mandate-section { border-left: 2px solid var(--accent-blue); padding-left: 2.5rem; margin-top: 4rem; }
.mandate-title { font-size: 2.1rem; text-transform: uppercase; margin-bottom: 1.5rem; font-weight: 900; }
.mandate-role { color: var(--accent-blue); text-transform: uppercase; letter-spacing: 0.08em; display: block; margin-bottom: 0.5rem; font-weight: 900; }

.architecture-comparison { margin: 3rem 0; padding: 4rem; background-color: var(--bg-panel); border-left: 2px solid var(--accent-blue); border-top: 1px solid var(--border-subtle); border-right: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); }
.comparison-title { font-size: 1.4rem; text-transform: uppercase; font-weight: 900; margin-bottom: 1.5rem; }

/* Checklist Refus Box */
.checklist-refus-box {
    border: 1px solid rgba(255, 128, 0, 0.3);
    background: linear-gradient(135deg, rgba(255, 128, 0, 0.02) 0%, var(--bg-panel) 100%);
    padding: 3.5rem;
    margin: 2.5rem 0;
    display: flex;
    gap: 4rem;
    align-items: center;
    transition: transform 0.3s ease, border-color 0.3s ease;
}
.checklist-refus-box:hover { transform: translateY(-2px); border-color: var(--accent-orange); }
.refus-title-box { flex: 0 0 auto; text-align: center; padding-right: 4rem; border-right: 1px solid var(--border-subtle); }
.refus-value { font-size: clamp(3.5rem, 5vw, 4.5rem); font-weight: 900; color: var(--accent-orange); line-height: 1; margin-bottom: 0.5rem; letter-spacing: -0.02em; }
.refus-label { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-white); font-weight: 600; }
.checklist-items { flex: 1; list-style: none; }
.checklist-items li { position: relative; padding-left: 2rem; margin-bottom: 1rem; font-size: clamp(1.05rem, 1.25vw, 1.15rem); line-height: 1.6; color: var(--text-white); }
.checklist-items li:last-child { margin-bottom: 0; }
.checklist-items li::before { content: "✕"; position: absolute; left: 0; color: var(--accent-orange); font-weight: 900; font-size: 1.1rem; }

/* CTA Section */
.cta-section { text-align: center; background: linear-gradient(to top, var(--bg-dark), var(--bg-black)); padding: 6.5rem 0; border-top: 1px solid var(--border-subtle); }
.cta-button { display: inline-block; background-color: var(--text-white); color: var(--bg-black); padding: 1.3rem 4.5rem; font-size: 1.1rem; font-weight: 900; text-transform: uppercase; text-decoration: none; letter-spacing: 0.08em; border-radius: 100px; position: relative; overflow: hidden; outline: 1px solid rgba(255, 255, 255, 0.08); outline-offset: 4px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6); transition: all 0.4s ease; }
.cta-button::before { content: ''; position: absolute; top: 0; left: -150%; width: 60%; height: 100%; background: linear-gradient(90deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.65) 50%, rgba(255, 255, 255, 0) 100%); transform: skewX(-25deg); }
.cta-button:hover { background-color: var(--text-white); color: var(--bg-black); transform: translateY(-4px); outline-color: rgba(135, 207, 235, 0.4); box-shadow: 0 20px 40px rgba(135, 207, 235, 0.18), 0 0 30px var(--glow-blue); }
.cta-button:hover::before { left: 200%; transition: left 0.65s ease; }
.cta-button span { display: inline-block; transition: transform 0.35s ease; }
.cta-button:hover span { transform: translate(5px, -5px); }
.cta-subtext { display: block; margin-top: 1.5rem; color: var(--text-white); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.15em; font-weight: 600; opacity: 0.6; }

/* FOOTER */
footer { background-color: var(--bg-black); border-top: 1px solid var(--border-subtle); padding: 4.5rem 6vw 3.5rem 6vw; text-align: center; }
.footer-baseline { font-size: clamp(1.2rem, 2.4vw, 2rem); font-weight: 900; text-transform: uppercase; margin-bottom: 2.5rem; }
.footer-baseline .orange { color: var(--accent-orange); }
.footer-nav { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 2rem; font-size: 0.85rem; margin-bottom: 2.5rem; }
.footer-nav span { color: #333333; }
.footer-nav a { color: var(--text-white) !important; text-decoration: none; text-transform: uppercase; font-weight: 600; letter-spacing: 0.05em; transition: opacity 0.2s ease; opacity: 0.6; }
.footer-nav a:hover { opacity: 1; }
.footer-nav .orange-btn { color: var(--accent-orange) !important; opacity: 1; }
.footer-nav .blue-btn { color: var(--accent-blue) !important; opacity: 1; }
.footer-semantic-map { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 1rem 1.5rem; border-top: 1px solid var(--border-subtle); padding-top: 2rem; margin-bottom: 2rem; font-size: 0.78rem; }
.footer-semantic-map a { color: var(--text-grey); text-decoration: none; text-transform: uppercase; font-weight: 600; transition: color 0.2s ease; }
.footer-semantic-map a:hover { color: var(--text-white); }
.footer-copy { color: var(--text-grey); font-size: 0.8rem; }

@media (max-width: 1024px) {
    .row-flex, .row-flex.reverse { flex-direction: column-reverse; gap: 2.5rem; padding: 3rem 0; }
    .row-text, .image-wrapper { max-width: 100%; width: 100%; }
    .checklist-refus-box { flex-direction: column; gap: 2rem; padding: 2.5rem; }
    .refus-title-box { border-right: none; border-bottom: 1px solid var(--border-subtle); padding-right: 0; padding-bottom: 2rem; width: 100%; }
    footer { padding: 3.5rem 6vw 2.5rem 6vw; } .footer-nav { gap: 1.2rem; flex-direction: column; } .footer-nav span { display: none; }
}