:root {
    --orange: #f47a20;
    --orange-dark: #b65312;
    --black: #0e0e0e;
    --dark: #1d1d1d;
    --soft-black: #2d2d2d;
    --white: #ffffff;
    --light: #f7f7f7;
    --gray: #676767;
    --border: #e7e7e7;
    --radius: 26px;
    --shadow: 0 18px 45px rgba(0, 0, 0, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--black);
    background: var(--white);
    line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 36px)); margin: 0 auto; }
.section-padding { padding: 85px 0; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.nav {
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.logo { display: flex; align-items: flex-end; gap: 10px; font-weight: 900; }
.logo-ms {
    color: var(--orange);
    font-size: 50px;
    line-height: 0.8;
    letter-spacing: -4px;
}
.logo-text {
    text-transform: uppercase;
    color: var(--orange);
    font-size: 20px;
    line-height: 1;
}
.nav-links { display: flex; align-items: center; gap: 26px; font-weight: 700; }
.nav-links a:hover { color: var(--orange); }
.menu-toggle {
    display: none;
    border: 0;
    background: var(--black);
    color: var(--white);
    border-radius: 10px;
    padding: 9px 12px;
    font-size: 24px;
}

.alert {
    position: fixed;
    top: 92px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 200;
    width: min(720px, calc(100% - 30px));
    padding: 16px 20px;
    border-radius: 16px;
    font-weight: 800;
    box-shadow: var(--shadow);
    text-align: center;
}
.alert.success { background: #e9fff0; border: 1px solid #83d89b; color: #126b2b; }
.alert.error { background: #fff0f0; border: 1px solid #e29191; color: #8a1515; }

.hero {
    padding: 85px 0 70px;
    background:
        radial-gradient(circle at 14% 18%, rgba(244, 122, 32, .20), transparent 28%),
        linear-gradient(135deg, #ffffff 0%, #f5f5f5 55%, #eeeeee 100%);
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 0.9fr;
    gap: 48px;
    align-items: center;
}
.eyebrow {
    color: var(--orange);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 14px;
}
h1, h2, h3 { line-height: 1.12; margin: 0; }
h1 { font-size: clamp(42px, 7vw, 78px); letter-spacing: -2px; }
h2 { font-size: clamp(32px, 4vw, 50px); margin-bottom: 18px; }
h3 { font-size: 24px; }
.hero-text { font-size: 22px; color: var(--soft-black); max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 14px 24px;
    border-radius: 999px;
    border: 2px solid transparent;
    font-weight: 900;
    cursor: pointer;
    transition: .2s ease;
}
.btn.primary { background: var(--orange); color: var(--white); }
.btn.primary:hover { background: var(--orange-dark); transform: translateY(-2px); }
.btn.secondary { background: var(--black); color: var(--white); }
.btn.secondary:hover { background: var(--soft-black); transform: translateY(-2px); }
.hero-card {
    border: 10px solid var(--white);
    border-radius: 34px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--white);
}

.intro {
    margin-top: -36px;
    background: var(--black);
    color: var(--white);
    border-radius: var(--radius);
    padding: 34px;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 24px;
    align-items: center;
    box-shadow: var(--shadow);
}
.intro p { margin-bottom: 0; color: #e9e9e9; }
.stats-card {
    background: linear-gradient(135deg, var(--orange), var(--orange-dark));
    border-radius: 22px;
    padding: 26px;
    color: var(--white);
}
.stats-card strong { display: block; font-size: 40px; line-height: 1; margin-bottom: 8px; }

.services { background: var(--white); }
.service-grid {
    margin-top: 34px;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 18px;
}
.service-card {
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    min-height: 245px;
    transition: .2s ease;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--orange); }
.service-card span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--black);
    color: var(--orange);
    font-weight: 900;
    margin-bottom: 18px;
}
.service-card p { color: var(--gray); }

.advantages {
    background:
        linear-gradient(rgba(14,14,14,.88), rgba(14,14,14,.88)),
        url('assets/fond-projets.jpg') center/cover no-repeat;
    color: var(--white);
}
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.advantage-box {
    border: 2px solid rgba(244, 122, 32, .7);
    border-radius: var(--radius);
    padding: 34px;
    background: rgba(0, 0, 0, .56);
}
.advantage-box h3 { color: var(--orange); margin-bottom: 14px; }
.advantage-box p { color: #f3f3f3; }

.form-section { background: var(--light); }
.form-grid {
    display: grid;
    grid-template-columns: 0.82fr 1.18fr;
    gap: 42px;
    align-items: start;
}
.form-grid.reverse { grid-template-columns: 1.18fr 0.82fr; }
.form-copy {
    position: sticky;
    top: 105px;
    background: var(--black);
    color: var(--white);
    border-radius: var(--radius);
    padding: 38px;
    box-shadow: var(--shadow);
}
.form-copy p { color: #eeeeee; }
.form-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 34px;
    box-shadow: 0 12px 35px rgba(0,0,0,.07);
}
label {
    display: block;
    font-weight: 900;
    margin: 14px 0 7px;
}
small { color: var(--gray); font-weight: 700; }
input, select, textarea {
    width: 100%;
    border: 1px solid #d4d4d4;
    border-radius: 14px;
    padding: 14px 15px;
    font: inherit;
    background: #fff;
}
input:focus, select:focus, textarea:focus {
    outline: 3px solid rgba(244, 122, 32, .22);
    border-color: var(--orange);
}
textarea { resize: vertical; }
.form-card .btn { width: 100%; margin-top: 22px; border: 0; font-size: 16px; }
.hidden-field { display: none; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.jobs { background: var(--white); }
.job-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.job-tags span {
    background: var(--orange);
    color: var(--white);
    border-radius: 999px;
    padding: 8px 13px;
    font-weight: 900;
}

.footer {
    background: linear-gradient(135deg, var(--black), #2a1305 55%, var(--orange-dark));
    color: var(--white);
    padding: 52px 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}
.footer a:hover { color: var(--orange); }
.footer-logo { margin-bottom: 18px; }

@media (max-width: 980px) {
    .hero-grid, .intro, .form-grid, .form-grid.reverse, .footer-grid { grid-template-columns: 1fr; }
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .advantage-grid { grid-template-columns: 1fr; }
    .form-copy { position: static; }
}

@media (max-width: 720px) {
    .menu-toggle { display: inline-block; }
    .nav-links {
        display: none;
        position: absolute;
        left: 18px;
        right: 18px;
        top: 78px;
        background: var(--black);
        color: var(--white);
        border-radius: 18px;
        padding: 18px;
        flex-direction: column;
        align-items: flex-start;
        box-shadow: var(--shadow);
    }
    .nav-links.open { display: flex; }
    .service-grid { grid-template-columns: 1fr; }
    .two-col { grid-template-columns: 1fr; }
    .section-padding { padding: 62px 0; }
    .hero { padding: 62px 0 48px; }
    .logo-ms { font-size: 42px; }
    .logo-text { font-size: 17px; }
}.custom-projects {
    background: #f7f7f7;
}

.section-intro {
    max-width: 900px;
    font-size: 1.1rem;
    line-height: 1.7;
    color: #333;
    margin-bottom: 35px;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    margin-top: 30px;
}

.project-card {
    background: #ffffff;
    border: 1px solid #e5e5e5;
    border-radius: 22px;
    padding: 28px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
}

.project-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: #f47b20;
    color: #ffffff;
    font-weight: 800;
    margin-bottom: 18px;
}

.project-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: #111111;
}

.project-card p {
    color: #444444;
    line-height: 1.6;
}

project-cta {
    width: 100%;
    margin-top: 45px;
    background: linear-gradient(135deg, #111111, #2b2b2b);
    color: #ffffff;
    border-radius: 28px;
    padding: 36px 45px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 35px;
    box-sizing: border-box;
}

.project-cta h3 {
    font-size: 2rem;
    margin: 0;
    min-width: 260px;
}

.project-cta p {
    margin: 0;
    flex: 1;
    line-height: 1.6;
    color: #f0f0f0;
}

.project-cta .btn {
    flex-shrink: 0;
    white-space: nowrap;
}

@media (max-width: 1050px) {
    .project-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .project-cta {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 650px) {
    .project-grid {
        grid-template-columns: 1fr;
    }
}
.project-img-duo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    width: 100%;
    height: 220px;
    border-radius: 18px;
    overflow: hidden;
    margin-top: 18px;
}

.project-img-duo img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    margin-top: 35px;
    padding-top: 20px;
    text-align: center;
    font-size: 0.9rem;
    color: #cccccc;
}

.footer-bottom p {
    margin: 6px 0;
}