:root {
    --bg-black: #0F1524;          /* Fond du site ajusté sur une base marine ultra sombre */
    --bg-card: #182239;           /* Fond des cartes (déclinaison du bleu marine) */
    --bg-card-hover: #222F4E;
    --text-white: #ffffff;
    --text-muted: #94A3B8;
    
    /* COULEURS EXTRAITES DU LOGO */
    --logo-navy: #243467;         /* Bleu du fond circulaire */
    --logo-cream: #F6F3DC;        /* Crème doux du "S" */
    --logo-steel-blue: #80A5CC;   /* Bleu de la flèche */

    /* Dégradés fluides */
    --gradient-text: linear-gradient(135deg, var(--logo-steel-blue) 0%, var(--logo-cream) 100%);
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(128, 165, 204, 0.4);
}

html {
    scroll-behavior: smooth;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
}

body {
    color: var(--text-white);
    background-color: var(--bg-black);
    background-image: 
        radial-gradient(circle at 80% 20%, rgba(36, 52, 103, 0.25) 0%, transparent 50%),
        radial-gradient(circle at 20% 60%, rgba(246, 243, 220, 0.03) 0%, transparent 40%);
    background-attachment: fixed;
    line-height: 1.6;
    overflow-x: hidden;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

header {
    background: rgba(15, 21, 36, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
}

.logo {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo:hover svg {
    transform: scale(1.05);
}

.logo-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-white);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.logo-text .ops {
    color: var(--logo-cream);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.nav-links a:hover { 
    color: var(--text-white); 
}

.dropdown { position: relative; }
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(15px);
    background: #121A2E;
    border: 1px solid var(--border-color);
    list-style: none;
    padding: 10px 0;
    min-width: 220px;
    border-radius: 8px;
}

.dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu a { padding: 10px 20px; display: block; text-transform: none; }
.dropdown-menu a:hover { background: rgba(255, 255, 255, 0.02); color: var(--text-white); }

.hamburger { 
    display: none; 
    font-size: 24px;
    cursor: pointer; 
    color: var(--text-white);
}

.hero {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 80px 20px;
}

.hero h1 {
    font-size: 72px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 30px;
    color: var(--text-white);
    letter-spacing: -2px;
    text-transform: uppercase;
    max-width: 1100px;
}

.hero p {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 40px auto;
    line-height: 1.7;
}

.btn {
    background: var(--text-white);
    color: #0F1524;
    padding: 16px 36px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    display: inline-flex;
    transition: all 0.3s ease;
    border: 1px solid var(--text-white);
}

.btn:hover {
    background: transparent;
    color: var(--text-white);
    box-shadow: 0 0 30px rgba(128, 165, 204, 0.25);
}

.btn-outline {
    background: transparent;
    color: var(--text-white);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--text-white);
    box-shadow: none;
}

.hero-stats {
    display: flex;
    gap: 80px;
    margin-top: 80px;
    justify-content: center;
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
    width: 100%;
    max-width: 800px;
}

.hero-stats h3 {
    font-size: 32px;
    color: var(--text-white);
    font-weight: 700;
}

.hero-stats span {
    color: var(--text-muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.main-layout {
    max-width: 1200px;
    margin: 60px auto 0 auto;
    padding: 0 30px;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.carousel-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 50px;
    border-radius: 8px;
}

.carousel {
    position: relative;
    height: 160px;
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transform: scale(0.98);
    transition: all 0.5s ease-in-out;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.slide.active { opacity: 1; transform: scale(1); }
.slide h3 { font-size: 42px; color: var(--text-white); margin-bottom: 15px; font-weight: 800; text-transform: uppercase; }
.slide p { font-size: 16px; color: var(--text-muted); max-width: 550px; }

.dots-container { margin-top: 30px; display: flex; gap: 10px; }
.dot { width: 40px; height: 2px; background: rgba(255, 255, 255, 0.1); cursor: pointer; transition: background 0.3s; }
.dot.active { background: var(--text-white); }

.positionnement-block {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 50px;
    border-radius: 8px;
    margin-top: 30px;
}

.sidebar {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 50px 35px;
    border-radius: 8px;
    height: fit-content;
}

.sidebar h3 { margin-bottom: 30px; color: var(--text-white); font-size: 20px; text-transform: uppercase; letter-spacing: 1px; }
.sidebar li { list-style: none; margin-bottom: 20px; color: var(--text-muted); font-size: 15px; padding-left: 25px; position: relative; }
.sidebar li::before { content: "→"; position: absolute; left: 0; color: var(--logo-steel-blue); }

.vision-section { max-width: 1200px; margin: 140px auto 40px auto; padding: 0 30px; }
.vision-header { text-align: left; margin-bottom: 60px; }
.vision-header h2 { font-size: 48px; color: var(--text-white); text-transform: uppercase; font-weight: 900; letter-spacing: -1px; }

.vision-container { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.vision-block { background: var(--bg-card); border: 1px solid var(--border-color); padding: 50px 40px; border-radius: 8px; transition: border-color 0.3s; }
.vision-block:hover { border-color: var(--border-hover); }

.vision-block .block-label { font-size: 12px; text-transform: uppercase; letter-spacing: 2px; color: var(--logo-steel-blue); font-weight: 700; margin-bottom: 15px; display: block; }
.vision-block h3 { font-size: 28px; margin-bottom: 20px; text-transform: uppercase; font-weight: 800; line-height: 1.2; }
.vision-block p { color: var(--text-muted); font-size: 16px; line-height: 1.7; }

.services-section-title { text-align: left; max-width: 1200px; margin: 140px auto 40px auto; padding: 0 30px; font-size: 48px; text-transform: uppercase; font-weight: 900; letter-spacing: -1px; }

.services-grid { max-width: 1200px; margin: 0 auto 100px auto; padding: 0 30px; display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 30px; }

.card { background: var(--bg-card); border: 1px solid var(--border-color); padding: 45px 35px; border-radius: 8px; transition: all 0.3s ease; }
.card:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }

/* CLASSE ACTIVE VIA JAVASCRIPT (SÉLECTION SERVICES) */
.card.highlight-card { 
    border-color: var(--logo-steel-blue);
    box-shadow: 0 0 30px rgba(128, 165, 204, 0.25); 
}

.card h3 { color: var(--text-white); font-size: 22px; margin-bottom: 25px; text-transform: uppercase; font-weight: 700; }
.card ul { list-style: none; }
.card li { margin-bottom: 12px; color: var(--text-muted); font-size: 15px; padding-left: 20px; position: relative; }
.card li::before { content: "•"; color: var(--logo-steel-blue); position: absolute; left: 0; font-weight: bold; }

.contact-section { max-width: 1200px; margin: 140px auto; padding: 0 30px; }

.cooperation-heading {
    text-align: center;
    font-size: 72px;
    font-weight: 900;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: -2px;
    margin-bottom: 60px;
}

.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }

.contact-info h3 { font-size: 24px; text-transform: uppercase; margin-bottom: 20px; font-weight: 700; }
.contact-info .subtitle { color: var(--text-muted); font-size: 16px; margin-bottom: 40px; }

.info-details-container { display: flex; flex-direction: column; gap: 30px; margin-bottom: 40px; }
.info-text-box h4 { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }
.info-text-box p { font-size: 18px; color: var(--text-white); font-weight: 500; }

.social-icons-container { display: flex; gap: 20px; }
.icon-social { color: var(--text-muted); width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; transition: color 0.3s ease; text-decoration: none; }
.icon-social:hover { color: var(--text-white); }
.icon-social svg { width: 20px; height: 20px; fill: currentColor; }

.contact-form { display: flex; flex-direction: column; gap: 25px; }
.form-group input, .form-group textarea { background: transparent; border: none; border-bottom: 1px solid rgba(255, 255, 255, 0.15); padding: 15px 0; color: var(--text-white); width: 100%; outline: none; transition: border-color 0.3s; font-size: 15px; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--text-white); }
.contact-form .btn { align-self: flex-start; margin-top: 15px; }

footer { background: #0A0E18; padding: 60px 40px; text-align: center; color: var(--text-muted); font-size: 13px; border-top: 1px solid var(--border-color); text-transform: uppercase; letter-spacing: 1px; }

@media (max-width: 992px) {
    .main-layout, .contact-layout, .vision-container { grid-template-columns: 1fr; gap: 40px; }
    .hero h1 { font-size: 46px; }
    .cooperation-heading { font-size: 46px; }
}

@media (max-width: 768px) {
    .hamburger { display: block; }
    .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background: #131B2E; padding: 40px; gap: 30px; border-bottom: 1px solid var(--border-color); }
    .nav-links.open { display: flex; }
}