/* ═══════════════════════════════════════════════════════════
   NEXUS FULL STACK SOLUTIONS — LIGHT TECH PREMIUM
   Direction artistique : lumineux, premium, technologique, élégant
   ═══════════════════════════════════════════════════════════ */

/* ── Polices locales (Inter) ── */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 300;
    font-display: swap;
    src: url('../fonts/inter-v20-latin-300.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/inter-v20-latin-regular.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('../fonts/inter-v20-latin-500.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../fonts/inter-v20-latin-600.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('../fonts/inter-v20-latin-700.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 800;
    font-display: swap;
    src: url('../fonts/inter-v20-latin-800.woff2') format('woff2');
}

/* ── Reset & Base ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Palette Light Tech Premium */
    --bg-light: #F7F7F5;            /* blanc cassé / ivoire */
    --bg-ivory: #FCFCFA;            /* ivoire très léger */
    --bg-soft: #EFEFEC;             /* gris très clair */
    --bg-dark: #0F1218;             /* noir profond */
    --bg-dark-soft: #161A22;        /* anthracite */
    --text-dark: #1A1D24;           /* anthracite texte */
    --text-body: #4A4F5A;           /* gris texte */
    --text-muted: #676b73;          /* gris atténué */
    --text-light: #F4F6FA;          /* texte clair sur sombre */
    --text-light-soft: #B8BFCC;     /* texte clair atténué */

    /* Accent NEXUS — utilisé avec parcimonie */
    --accent: #3D7BFF;              /* bleu NEXUS */
    --accent-soft: rgba(61, 123, 255, 0.08);
    --accent-line: rgba(61, 123, 255, 0.22);

    --line-light: rgba(20, 24, 32, 0.08);
    --line-dark: rgba(255, 255, 255, 0.10);

    --radius: 20px;
    --radius-sm: 12px;
    --transition: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font);
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 16px;
}

::selection {
    background: var(--accent);
    color: #fff;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-light); }
::-webkit-scrollbar-thumb { background: #C9CDD4; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
    z-index: 2;
}

/* ── Typographie ── */
.display-large {
    font-size: clamp(2.6rem, 6.5vw, 5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.04em;
    color: var(--text-dark);
}

.display-medium {
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.03em;
    color: var(--text-dark);
}

.section-title {
    font-size: clamp(1.9rem, 4vw, 2.9rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.12;
    color: var(--text-dark);
}

.section-sub {
    max-width: 640px;
    color: var(--text-body);
    font-size: clamp(1rem, 1.3vw, 1.15rem);
    line-height: 1.75;
}

.citation {
    font-style: italic;
    font-weight: 700;
}

/* Label / kicker */
.kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--accent);
    margin-bottom: 22px;
}
.kicker::before {
    content: '';
    width: 28px;
    height: 1px;
    background: var(--accent);
}
.kicker.on-dark {
    color: #7FA8FF;
}
.kicker.on-dark::before {
    background: #7FA8FF;
}

/* ── Boutons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 34px;
    border-radius: 100px;
    font-family: var(--font);
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--text-dark);
    color: #fff;
}
.btn-primary:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(61, 123, 255, 0.22);
}

.btn-ghost {
    background: transparent;
    color: var(--text-dark);
    border-color: var(--line-light);
}
.btn-ghost:hover {
    border-color: var(--text-dark);
    transform: translateY(-2px);
}

.btn-light {
    background: #fff;
    color: var(--text-dark);
}
.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
}

.btn-outline-light {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.28);
}
.btn-outline-light:hover {
    background: #fff;
    color: var(--text-dark);
    transform: translateY(-2px);
}

.btn .arrow {
    transition: transform var(--transition);
}
.btn:hover .arrow {
    transform: translateX(5px);
}

/* ── Survol du bouton clair sur fond sombre (Vision & CTA) ── */
#vision .btn-light:hover,
#cta .btn-light:hover {
    transform: translateY(-3px);
    background-color: var(--accent);
    color: #fff;
}

/* ── Barre de navigation ── */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 22px 0;
    transition: all 0.4s ease;
}
.nav.scrolled {
    background: rgba(247, 247, 245, 0.85);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line-light);
    padding: 14px 0;
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}
.nav-logo {
    height: 50px;
    width: auto;
}

.nav-brand-text span {
    color: var(--accent);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 34px;
    list-style: none;
}
.nav-links a {
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-body);
    transition: color var(--transition);
    position: relative;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--accent);
    transition: width var(--transition);
}
.nav-links a:hover {
    color: var(--text-dark);
}
.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 11px 24px;
    font-size: 0.85rem;
}

/* Burger */
.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.burger span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
    display: block;
}
.burger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-light);
    z-index: 99;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}
.mobile-menu.active {
    opacity: 1;
    pointer-events: auto;
}
.mobile-menu a {
    text-decoration: none;
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-dark);
    letter-spacing: -0.02em;
}

/* ── Sections ── */
section {
    padding: 110px 0;
    position: relative;
}

.section-light {
    background: var(--bg-light);
}
.section-ivory {
    background: var(--bg-ivory);
}
.section-dark {
    background: var(--bg-dark);
    color: #fff;
}
.section-dark-soft {
    background: var(--bg-dark-soft);
    color: #fff;
}

/* ── HERO ── */
#hero {
    padding: 180px 0 120px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--bg-light);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 70px;
    align-items: center;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    /*margin-top: 100px;*/
    margin-bottom: 30px;
}
.hero-label .separator {
    color: var(--accent);
}

.hero-title {
    font-size: clamp(2.5rem, 5.5vw, 4.4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.04em;
    color: var(--text-dark);
    margin-bottom: 28px;
    overflow-wrap: break-word;
    word-wrap: break-word;
    hyphens: auto;
    text-wrap: balance;        /* Équilibre automatiquement la longueur des lignes */
  overflow-wrap: break-word;
}
.hero-title .highlight {
    color: var(--accent);
    position: relative;
    display: inline;
    white-space: normal;
}
.hero-title .highlight::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0.08em;
    height: 0.12em;
    background: var(--accent-line);
    border-radius: 2px;
    z-index: -1;
}

.hero-sub {
    font-size: clamp(1.05rem, 1.5vw, 1.25rem);
    color: var(--text-body);
    max-width: 560px;
    line-height: 1.75;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

/* Composition visuelle abstraite du Hero */
.hero-visual {
    position: relative;
    height: 560px;
}

.hero-visual .node {
    position: absolute;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 6px var(--accent-soft);
}
.hero-visual .node-1 { width: 10px; height: 10px; top: 12%; left: 18%; }
.hero-visual .node-2 { width: 7px; height: 7px; top: 30%; left: 62%; background: #C9CDD4; box-shadow: none; }
.hero-visual .node-3 { width: 8px; height: 8px; bottom: 22%; left: 40%; background: var(--text-dark); box-shadow: none; }
.hero-visual .node-4 { width: 6px; height: 6px; bottom: 12%; right: 12%; background: #C9CDD4; box-shadow: none; }

.hero-visual .line {
    position: absolute;
    height: 1px;
    background: var(--line-light);
    transform-origin: left center;
}
.hero-visual .line-1 { width: 220px; top: 16%; left: 22%; transform: rotate(-18deg); }
.hero-visual .line-2 { width: 160px; top: 34%; left: 34%; transform: rotate(12deg); }
.hero-visual .line-3 { width: 200px; bottom: 26%; left: 30%; transform: rotate(-8deg); }

.hero-grid-overlay {
    position: absolute;
    top: 15%;
    right: 0;
    width: 55%;
    height: 70%;
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    background:
        linear-gradient(rgba(20,24,32,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(20,24,32,0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.7;
}

.hero-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(14px);
    border: 1px solid var(--line-light);
    border-radius: 16px;
    padding: 20px 24px;
    box-shadow: 0 24px 60px rgba(20, 24, 32, 0.08);
}
/* ── Application aux cartes ── */

.hero-card-1 {
    top: 8%;
    right: 4%;
    width: 200px;
    animation: floatRight 7s ease-in-out infinite;
}

.hero-card-3 {
    bottom: 8%;
    left: 0;
    width: 230px;
    animation: floatLeft 8s ease-in-out 1s infinite;
}

.hero-card-2 {
    top: 42%;
    right: 22%;
    width: 170px;
    animation: floatRight 9s ease-in-out 0.5s infinite;
}
.hero-card .card-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.hero-card .card-value {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
}
.hero-card .card-value small {
    font-weight: 500;
    color: var(--text-body);
    font-size: 0.85rem;
}




@media (max-width: 750px) {
    .pty-stamp-badge {
        width: 90px;
        height: 90px;
        top: -10px;
        right: 0;
    }
}

/* ═══════════════════════════════════════════════════════════
   ANIMATIONS DES CARTES HERO (Haut/Bas + Gauche/Droite + Zoom)
   ═══════════════════════════════════════════════════════════ */

/* Animation 1 : Monte, va vers la droite et zoome */
@keyframes floatRight {
    0%, 100% { 
        transform: translateY(0) translateX(0) scale(1); 
    }
    50% { 
        /* Monte de 12px, se décale de 6px vers la droite et grossit de 3% */
        transform: translateY(-12px) translateX(6px) scale(1.03); 
    }
}

/* Animation 2 : Monte, va vers la gauche et zoome */
@keyframes floatLeft {
    0%, 100% { 
        transform: translateY(0) translateX(0) scale(1); 
    }
    50% { 
        /* Monte de 10px, se décale de 6px vers la gauche et grossit de 4% */
        transform: translateY(-10px) translateX(-6px) scale(1.04); 
    }
}

.hero-connector {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    border: 1px solid var(--accent-line);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-connector::before {
    content: '';
    width: 60px;
    height: 60px;
    border: 1px solid var(--accent-line);
    border-radius: 50%;
}
.hero-connector::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 0 6px var(--accent-soft);
}

/* ── Section Problème (éditoriale) ── */
#probleme {
    padding: 150px 0;
    background: var(--bg-ivory);
}
.probleme-wrap {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}
.probleme-titre {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 800;
    letter-spacing: -0.035em;
    line-height: 1.1;
    color: var(--text-dark);
    margin-bottom: 20px;
}
.probleme-titre .line-through {
    color: var(--text-muted);
    text-decoration: line-through;
    text-decoration-color: var(--accent);
    text-decoration-thickness: 3px;
}
.probleme-corps {
    max-width: 720px;
    margin: 40px auto 0;
    font-size: clamp(1.1rem, 1.8vw, 1.35rem);
    color: var(--text-body);
    line-height: 1.8;
}
.probleme-corps strong {
    color: var(--text-dark);
    font-weight: 600;
}
.probleme-question {
    margin-top: 56px;
    padding: 40px;
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    background: var(--bg-light);
    position: relative;
}
.probleme-question::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--accent);
    border-radius: 0 0 4px 4px;
}
.probleme-question span {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--accent);
    margin-bottom: 14px;
    font-weight: 600;
}
.probleme-question p {
    font-size: clamp(1.4rem, 2.5vw, 1.9rem);
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.3;
    letter-spacing: -0.02em;
}

/* ── Section Savoir-faire ── */
#savoir-faire {
    background: var(--bg-light);
    padding: 130px 0;
}
.sf-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: end;
    margin-bottom: 80px;
}
.sf-header .section-sub {
    justify-self: end;
}

.sf-list {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--line-light);
}
.sf-item {
    display: grid;
    grid-template-columns: 90px 1fr 1.2fr;
    gap: 40px;
    align-items: center;
    padding: 44px 0;
    border-bottom: 1px solid var(--line-light);
    transition: background var(--transition);
}
.sf-item:hover {
    background: linear-gradient(90deg, var(--accent-soft), transparent 60%);
}
.sf-number {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.08em;
}
.sf-title {
    font-size: clamp(1.2rem, 2vw, 1.6rem);
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.02em;
}
.sf-desc {
    font-size: 0.95rem;
    color: var(--text-body);
    line-height: 1.7;
}

/* ── Section Méthode ── */
#methode {
    background: var(--bg-ivory);
    padding: 130px 0;
}
.methode-header {
    max-width: 720px;
    margin-bottom: 80px;
}
.methode-chem {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
}
.methode-chem::before {
    content: '';
    position: absolute;
    top: 34px;
    left: 8%;
    right: 8%;
    height: 1px;
    background: var(--line-light);
    z-index: 0;
}
.methode-step {
    position: relative;
    z-index: 1;
    padding: 0 24px;
}
.methode-num {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background: var(--bg-light);
    border: 1px solid var(--line-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 28px;
    position: relative;
}
.methode-step.active .methode-num {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    box-shadow: 0 10px 30px rgba(61, 123, 255, 0.25);
}
.methode-step h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}
.methode-step p {
    font-size: 0.9rem;
    color: var(--text-body);
    line-height: 1.7;
}

.methode-detail {
    margin-top: 90px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: start;
}
.methode-detail-txt .section-sub {
    margin-top: 20px;
}
.methode-points {
    margin-top: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.methode-point {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.92rem;
    color: var(--text-body);
    line-height: 1.5;
}
.methode-point::before {
    content: '';
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    margin-top: 7px;
}

.methode-citation {
    border-left: 3px solid var(--accent);
    padding: 24px 32px;
    background: var(--bg-light);
    border-radius: 0 var(--radius) var(--radius) 0;
}
.methode-citation p {
    font-size: clamp(1.1rem, 1.8vw, 1.35rem);
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.5;
    letter-spacing: -0.01em;
}

/* ── Section Vision métier (sombre) ── */
#vision {
    background: var(--bg-dark);
    color: #fff;
    padding: 140px 0;
    position: relative;
    overflow: hidden;
}
#vision::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(61, 123, 255, 0.12) 0%, transparent 60%);
    pointer-events: none;
}
.vision-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 80px;
    align-items: center;
}
.vision-title {
    font-size: clamp(2rem, 4.5vw, 3.4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.12;
    color: #fff;
    margin-bottom: 28px;
}
.vision-text {
    color: var(--text-light-soft);
    font-size: clamp(1rem, 1.3vw, 1.15rem);
    line-height: 1.8;
    max-width: 560px;
}
.vision-text strong {
    color: #fff;
}

.vision-sequence {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.vision-seq-item {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 30px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.vision-seq-item:last-child {
    border-bottom: none;
}
.vision-seq-num {
    font-size: 0.8rem;
    font-weight: 600;
    color: #7FA8FF;
    letter-spacing: 0.1em;
}
.vision-seq-item h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.02em;
}
.vision-seq-item p {
    font-size: 0.9rem;
    color: var(--text-light-soft);
    margin-top: 4px;
}
.vision-seq-arrow {
    margin-left: auto;
    color: #7FA8FF;
    font-size: 1.3rem;
}

/* ── Section Types de projets ── */
#projets {
    background: var(--bg-light);
    padding: 130px 0;
}
.projets-header {
    max-width: 720px;
    margin-bottom: 70px;
}
.projets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.projet-card {
    padding: 40px 36px;
    background: var(--bg-ivory);
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.projet-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}
.projet-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 60px rgba(20, 24, 32, 0.08);
    border-color: var(--accent-line);
}
.projet-card:hover::before {
    transform: scaleX(1);
}
.projet-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 26px;
    color: var(--accent);
    font-size: 1.4rem;
}
.projet-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}
.projet-card p {
    font-size: 0.92rem;
    color: var(--text-body);
    line-height: 1.7;
}

/* ── Section Technologies ── */
#technologies {
    background: var(--bg-ivory);
    padding: 100px 0;
}
.tech-header {
    max-width: 680px;
    margin-bottom: 56px;
}
.tech-message {
    margin-bottom: 48px;
    padding: 24px 32px;
    border-radius: var(--radius-sm);
    background: var(--bg-light);
    border: 1px solid var(--line-light);
    display: inline-flex;
    align-items: center;
    gap: 16px;
    font-size: 0.95rem;
    color: var(--text-body);
}
.tech-message .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}
.tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.tech-chip {
    padding: 10px 22px;
    border-radius: 100px;
    border: 1px solid var(--line-light);
    background: var(--bg-light);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-body);
    transition: all var(--transition);
}
.tech-chip:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

/* ── Section Réalisations ── */
#realisations {
    background: var(--bg-light);
    padding: 130px 0;
}
.realisations-header {
    max-width: 720px;
    margin-bottom: 70px;
}
.realisations-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.realisation-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
    padding: 70px 0;
    border-bottom: 1px solid var(--line-light);
}
.realisation-block:first-child {
    padding-top: 0;
}
.realisation-block:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.realisation-visual {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-soft) 100%);
    width: 40vw;
    height: 60vh;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}
.realisation-visual .rv-image-wrap {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
}
.realisation-visual .rv-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.realisation-visual .rv-label {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 600;
    font-size: 1.1rem;
    text-align: center;
    letter-spacing: 0.02em;
    line-height: 1.5;
}
.realisation-visual .rv-sub {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.8rem;
    text-align: center;
    margin-top: 8px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
}
.realisation-visual .rv-grid {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 36px 36px;
}
.realisation-visual .rv-glow {
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(61,123,255,0.25) 0%, transparent 65%);
    border-radius: 50%;
}
.realisation-content .rc-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--accent);
    margin-bottom: 14px;
}
.realisation-content h3 {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}
.realisation-flow {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.rc-flow-item {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 18px;
    align-items: start;
}
.rc-flow-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    padding-top: 3px;
}
.rc-flow-value {
    font-size: 0.95rem;
    color: var(--text-body);
    line-height: 1.6;
}
.rc-flow-value strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* ── Section Le Lab ── */
#lab {
    background: var(--bg-ivory);
    padding: 130px 0;
}
.lab-header {
    max-width: 720px;
    margin-bottom: 70px;
}
.lab-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.lab-card {
    padding: 40px 36px;
    background: var(--bg-light);
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    transition: all var(--transition);
    position: relative;
}
.lab-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 60px rgba(20, 24, 32, 0.08);
}
.lab-badge {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
    background: var(--accent-soft);
    padding: 5px 14px;
    border-radius: 100px;
}
.lab-icon {
    font-size: 2rem;
    margin-bottom: 24px;
}
.lab-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}
.lab-card p {
    font-size: 0.9rem;
    color: var(--text-body);
    line-height: 1.7;
}

.lab-message {
    margin-top: 56px;
    padding: 40px 48px;
    background: var(--bg-dark);
    border-radius: var(--radius);
    color: #fff;
    display: flex;
    align-items: center;
    gap: 32px;
}
.lab-message .lm-icon {
    font-size: 2rem;
    flex-shrink: 0;
}
.lab-message p {
    font-size: clamp(1.05rem, 1.6vw, 1.25rem);
    font-weight: 600;
    line-height: 1.5;
    letter-spacing: -0.01em;
}

/* ── Section Pourquoi nous ── */
#pourquoi {
    background: var(--bg-light);
    padding: 130px 0;
}
.pourquoi-header {
    max-width: 720px;
    margin-bottom: 70px;
}
.pourquoi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.pourquoi-item {
    padding: 36px 32px;
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    background: var(--bg-ivory);
    transition: all var(--transition);
}
.pourquoi-item:hover {
    border-color: var(--accent-line);
    box-shadow: 0 20px 50px rgba(20, 24, 32, 0.06);
}
.pourquoi-num {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.1em;
    margin-bottom: 18px;
}
.pourquoi-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}
.pourquoi-item p {
    font-size: 0.9rem;
    color: var(--text-body);
    line-height: 1.7;
}

/* ── Section Identité ── */
#identite {
    background: var(--bg-ivory);
    padding: 130px 0;
}
.identite-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 80px;
    align-items: center;
}
.identite-txt .section-sub {
    margin-top: 24px;
}
.identite-txt .section-sub + .section-sub {
    margin-top: 16px;
}
.identite-founder {
    background: var(--bg-light);
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    padding: 36px;
    text-align: center;
}
.founder-avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: var(--bg-soft);
    border: 1px solid var(--line-light);
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    overflow: hidden;
}
.founder-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.founder-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
}
.founder-role {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}
.founder-link {
    display: inline-block;
    margin-top: 18px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}
.founder-link:hover {
    color: var(--text-dark);
}

/* ── CTA Final (sombre) ── */
#cta {
    background: var(--bg-dark);
    color: #fff;
    padding: 150px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
#cta::before {
    content: '';
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(61, 123, 255, 0.14) 0%, transparent 60%);
    pointer-events: none;
}
.cta-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 800;
    letter-spacing: -0.035em;
    line-height: 1.1;
    color: #fff;
    margin-bottom: 24px;
}
.cta-sub {
    font-size: clamp(1.05rem, 1.5vw, 1.25rem);
    color: var(--text-light-soft);
    margin-bottom: 44px;
}
.cta-note {
    margin-top: 28px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.cta-note::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #34D399;
}

/* ── Footer ── */
footer {
    background: var(--bg-dark);
    color: #fff;
    padding: 70px 0 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px; /* Espace initial entre la marque et le groupe de menus */
}
/* 1. Bloc de marque (Préservé) */
.footer-brand {
    flex: 1 1 300px; /* Se développe mais garde une largeur de base */
    max-width: 400px;
}
.footer-brand h3 {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
}
.footer-brand h3 span {
    color: var(--accent);
}
.footer-brand p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.7;
    max-width: 320px;
}
.footer-col h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 18px;
}
.footer-col ul {
    list-style: none;
}
.footer-col li {
    margin-bottom: 10px;
}
.footer-col a {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition);
    cursor: pointer;
}
.footer-col a:hover {
    color: #fff;
}
.footer-bottom {
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ── Modale ── */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 18, 24, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.modal-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}
.modal-content {
    background: var(--bg-ivory);
    border-radius: var(--radius);
    max-width: 700px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    padding: 40px;
    position: relative;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
    color: var(--text-dark);
}
.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--bg-soft);
    border: none;
    color: var(--text-dark);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background var(--transition);
}
.modal-close:hover {
    background: var(--accent);
    color: #fff;
}
.modal-content h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--text-dark);
}
.modal-content h4 {
    font-size: 1rem;
    margin: 18px 0 8px;
    color: var(--accent);
}
.modal-content p {
    font-size: 0.9rem;
    color: var(--text-body);
    line-height: 1.7;
    margin-bottom: 8px;
}
.modal-content ul {
    color: var(--text-body);
    font-size: 0.9rem;
    padding-left: 20px;
    margin-bottom: 12px;
    line-height: 1.7;
}
.modal-content a {
    color: var(--accent);
}

/* ── Animations au scroll ── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity, transform;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── Identité ── */

#identite .identite-grid {
    align-items: stretch; /* remplace 'center' par défaut */
}

#identite .realisation-visual {
    height: 100%;
    min-height: 350px;
    width: 100%;
}

#identite .realisation-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ── Formulaire de contact ── */
#contact {
    text-align: center;
}
.contact-box {
    max-width: 600px;
    margin: 0 auto;
    padding: 40px;
}

/* Conteneur glass du formulaire */
.glass {
    background: var(--bg-ivory);
    border: 1px solid var(--line-light);
    border-radius: var(--radius);
    box-shadow: 0 24px 60px rgba(20, 24, 32, 0.06);
}
.glass:hover {
    border-color: var(--accent-line);
}

#contact input,
#contact textarea {
    transition: border-color var(--transition), box-shadow var(--transition);
}
#contact input:focus,
#contact textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(61, 123, 255, 0.15);
}

/* Messages du formulaire */
#form-message {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    display: none; /* caché par défaut */
    text-align: center;
    font-weight: 500;
}
#form-message.success {
    display: block;
    background: rgba(52, 211, 153, 0.12);
    color: #34d399;
    border: 1px solid rgba(52, 211, 153, 0.25);
}
#form-message.error {
    display: block;
    background: rgba(239, 68, 68, 0.12);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.25);
}
/* ── Badge localisation (pilule élégante) ── */
.footer-brand h3 {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.location-tag {
    display: inline-block;
    font-size: 0.7em;
    font-weight: 600;
    line-height: 1.2;
    color: var(--accent);
    letter-spacing: 1px;
    border: 1px solid var(--accent);
    padding: 2px 8px;
    border-radius: 100px;
    white-space: nowrap;
}

/* 2. Groupe réunissant les 3 colonnes de menu */
.footer-nav-group {
    display: flex;
    flex: 2 1 auto;
    justify-content: space-between;
    gap: 30px; /* L'espace entre les 3 colonnes commence à 30px */
    transition: gap 0.3s ease;
}

.footer-col {
    min-width: 120px;
}





/* ── Responsive ── */
@media (max-width: 1100px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    .hero-visual {
        height: 480px;
        max-width: 600px;
        margin: 0 auto;
        width: 100%;
    }
    .sf-item {
        grid-template-columns: 70px 1fr;
        gap: 0px;
    }
    .sf-desc {
        grid-column: 2;
    }
    .methode-chem {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    .methode-chem::before {
        display: none;
    }
    .vision-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    .projets-grid,
    .lab-grid,
    .pourquoi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .realisation-block {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .realisation-visual {
        width: 100%;
        height: 60vh;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Étape 1 : Réduction de l'espace inter-colonnes sur écrans moyens */
@media (max-width: 1024px) {
    .footer-nav-group {
        gap: 15px; /* L'espace entre les 3 colonnes diminue */
    }
}













@media (max-width: 900px) {
    .hero-title {
        font-size: clamp(2rem, 6vw, 2.8rem);
        line-height: 1.15;
    }
    .nav-inner {
        justify-content: space-between;
    }
    .nav-brand {
        margin-right: auto;
    }
    .nav-links,
    .nav-cta {
        display: none;
    }
    .burger {
        display: flex;
        margin-left: auto;
    }
    .sf-header {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .methode-detail {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .identite-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    .btn-primary {
        background: var(--text-dark);
        color: #fff !important;
    }
}

/* Étape 2 : Le bloc de marque reste au-dessus, les 3 colonnes passent dessous (toujours côte à côte) */
@media (max-width: 850px) {
    .footer-brand {
        flex: 1 1 100%; /* Prend toute la largeur en haut */
        max-width: 100%;
        margin-bottom: 10px;
    }

    .footer-nav-group {
        flex: 1 1 100%;
        justify-content: flex-start;
        gap: 40px; /* On redonne de l'espace une fois sous le bloc de marque */
    }
}









@media (max-width: 750px) { 
    .mobile-menu a {
        text-decoration: none;
        font-size: 1.2rem;
        font-weight: 600;
        color: var(--text-dark);
        letter-spacing: -0.02em;
    }   
    section {
        padding: 80px 0;
    }
    .container {
        padding: 0 22px;
    }
    #hero {
        padding: 140px 0 80px;
    }
    .hero-title {
        font-size: clamp(1.7rem, 7vw, 2.3rem);
        line-height: 1.2;
        letter-spacing: -0.03em;
    }
    .hero-visual {
        height: 400px;
    }
    .projets-grid,
    .lab-grid,
    .pourquoi-grid {
        grid-template-columns: 1fr;
    }
    .methode-chem {
        grid-template-columns: 1fr;
    }
    .methode-chem::before {
        display: none;
    }
    .methode-step {
        padding: 0;
    }
    .methode-detail {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .methode-points {
        grid-template-columns: 1fr;
    }
    .identite-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .contact-box {
        padding: 24px 16px;
    }
}


/* Étape 3 : Sur mobile, les 3 colonnes s'empilent enfin verticalement */
@media (max-width: 600px) {
    .footer-nav-group {
        flex-direction: column;
        gap: 24px;
    }
}


@media (max-width: 580px) {
    .hero-visual {
        height: 300px;
    }
    
    .hero-card-3 {
        bottom: -20%;    /* 5% - 10% = -5% (pour descendre de 10% en plus) */
        left: 2%;
        width: 130px;
        padding: 8px 12px;
    }
    
    .hero-card-1 {
        top: 2%;
        right: 10%;/*Eloignement de la bordure droite*/
        width: 130px;
        padding: 8px 12px;
    }
    
    
    .hero-card .card-value {
        font-size: 1rem;
    }
    
    .hero-card .card-label {
        font-size: 0.45rem;
    }
    
    .hero-card .card-value small {
        font-size: 0.6rem;
    }
}


/* --- RESPONSIVE HERO TITLE --- */
@media (max-width: 500px) {
    .mobile-menu a {
        text-decoration: none;
        font-size: 1.0rem;
        font-weight: 600;
        color: var(--text-dark);
        letter-spacing: -0.02em;
    }
    
    #hero {
        padding: 140px 0 80px;
    }
    .hero-title {
        /*font-size: clamp(1.4rem, 5vw, 1.8rem);*/
        line-height: 1.25;
        letter-spacing: -0.02em;
        word-break: break-word;
        hyphens: auto;
    }
    
    .hero-title .highlight {
        display: inline-block;
    }

    .tech-list {
        justify-content: center;
    }

    /* Cacher l'icône du Lab */
    .lm-icon {
        display: none;
    }
    .lab-message {
        text-align: center; 
        }

}

@media (max-width: 370px) {
 
    .nav-inner {
        gap: 8px;
    }
    .nav-brand {
        min-width: 0;
        flex-shrink: 1;
    }
    .nav-brand-content {
        padding: 5px 10px 8px 0;
    }
    .nav-logo {
        height: 34px;
        max-width: 200px;
        object-fit: contain;
    }
    .burger {
        flex-shrink: 0;
        margin-left: auto;
        padding: 6px;
    }

    .hero-title {
        line-height: 1.3;
        letter-spacing: -0.01em;
    }
    
    .hero-label {
        font-size: 0.6rem;
        letter-spacing: 0.15em;
        gap: 6px;
        flex-wrap: wrap;
    }
    
    .hero-sub {
        font-size: 0.9rem;
        line-height: 1.6;
    }

    #hero {
        padding: 120px 10px 80px 0px;
    }

    .hero-card-1 {
        top: 2%;
        right: 20%;/*Eloignement de la bordure droite*/
        width: 130px;
        padding: 8px 12px;
    }


}