:root {
    /* Couleurs principales - Charte Graphique */
    --bleu-violet: #6B7FFF;
    --bleu-ciel: #5CA7E8;
    --cyan-clair: #6FD4E8;

    /* Couleurs secondaires */
    --gris-fonce: #2C3E50;
    --gris-moyen: #7F8C8D;
    --gris-clair: #ECF0F1;
    --blanc: #FFFFFF;

    /* Dégradé principal */
    --gradient-primary: linear-gradient(135deg, #6B7FFF 0%, #6FD4E8 100%);
    --gradient-subtle: linear-gradient(180deg, #5CA7E8 0%, #6FD4E8 100%);
}

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

body {
    font-family: 'Open Sans', sans-serif;
    color: var(--gris-fonce);
    background: var(--blanc);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Typographie selon la charte */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Montserrat', sans-serif;
}

h1 {
    font-size: 48px;
    font-weight: 700;
    color: var(--bleu-violet);
    line-height: 1.2;
}

h2 {
    font-size: 32px;
    font-weight: 600;
    color: var(--gris-fonce);
}

h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--gris-fonce);
}

p {
    font-size: 16px;
    font-weight: 400;
    color: var(--gris-fonce);
    line-height: 1.8;
}

.text-light {
    font-weight: 300;
    color: var(--gris-moyen);
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(107, 127, 255, 0.1);
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 3rem;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-container img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gris-fonce);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--gris-fonce);
    font-weight: 600;
    font-size: 15px;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--bleu-violet);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--bleu-violet);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section avec dégradé de la charte */
.hero {
    margin-top: 90px;
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--blanc);
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -15%;
    width: 60%;
    height: 120%;
    background: var(--gradient-primary);
    opacity: 0.08;
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    50% {
        transform: translate(-30px, 30px) rotate(5deg);
    }
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 3rem;
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 5rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-content .subtitle {
    font-size: 1.2rem;
    color: var(--gris-moyen);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.btn {
    padding: 1rem 2rem;
    font-size: 16px;
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #5CA7E8 0%, #6B7FFF 100%);
    transition: left 0.3s ease;
}

.btn-primary:hover::before {
    left: 0;
}

.btn-primary span {
    position: relative;
    z-index: 1;
}

.btn-secondary {
    background: transparent;
    color: var(--bleu-violet);
    border: 2px solid var(--bleu-violet);
}

.btn-secondary:hover {
    background: var(--bleu-violet);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(107, 127, 255, 0.3);
}

.hero-visual {
    position: relative;
    animation: fadeIn 1s ease-out 0.8s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.visual-card {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(107, 127, 255, 0.15);
    position: relative;
    overflow: hidden;
}

.visual-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--gradient-primary);
}

.visual-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 2rem;
}

.stat {
    text-align: center;
    padding: 1.5rem 0;
    border-top: 1px solid var(--gris-clair);
}

.stat:first-of-type {
    border-top: none;
}

.stat-number {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--bleu-violet);
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--gris-moyen);
    font-size: 0.95rem;
}

/* Sections communes */
section {
    padding: 6rem 3rem;
}

.section-header {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 4rem;
}

.section-tag {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--bleu-violet);
    font-weight: 700;
    margin-bottom: 1rem;
    display: block;
}

.section-title {
    margin-bottom: 1.5rem;
}

.section-description {
    font-size: 1.1rem;
    color: var(--gris-moyen);
}

/* Section À propos */
.about {
    background: var(--gris-clair);
}

.about-content {
    max-width: 1400px;
    margin: 3rem auto 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text {
    background: white;
    padding: 3rem;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-text strong {
    color: var(--bleu-violet);
}

.about-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(107, 127, 255, 0.2);
}

/* Services Section */
.services {
    background: var(--blanc);
}

.services-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.service-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s ease;
    border: 2px solid var(--gris-clair);
    position: relative;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 4px;
    background: var(--gradient-primary);
    transition: width 0.4s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(107, 127, 255, 0.15);
    border-color: var(--bleu-violet);
}

.service-card:hover::before {
    width: 100%;
}

.service-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.service-card:hover img {
    transform: scale(1.08);
}

.service-content {
    padding: 2rem;
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.service-title {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.service-description {
    color: var(--gris-moyen);
    line-height: 1.7;
}

/* Approche Section avec dégradé */
.approach {
    background: var(--gradient-primary);
    color: white;
    position: relative;
    overflow: hidden;
}

.approach::before {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 60%;
    height: 80%;
    background: radial-gradient(circle, rgba(111, 212, 232, 0.15) 0%, transparent 70%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.15;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.25;
    }
}

.approach .section-tag,
.approach .section-title,
.approach .section-description {
    color: white;
}

.approach-container {
    max-width: 1300px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2.5rem;
    margin-top: 4rem;
}

.step {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.step:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.step-number {
    font-family: 'Montserrat', sans-serif;
    font-size: 4rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.3);
    line-height: 1;
    margin-bottom: 1rem;
}

.step-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: white;
}

.step-description {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
}

/* Atouts Section */
.advantages {
    background: white;
}

.advantages-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

.advantage-card {
    padding: 2.5rem;
    background: var(--gris-clair);
    border-radius: 16px;
    border-left: 6px solid var(--bleu-violet);
    transition: all 0.3s ease;
}

.advantage-card:hover {
    transform: translateX(8px);
    box-shadow: 0 10px 30px rgba(107, 127, 255, 0.1);
}

.advantage-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.advantage-card h3 span {
    font-size: 2rem;
}

.advantage-card p {
    color: var(--gris-moyen);
}

/* Contact Section */
.contact {
    background: var(--gris-clair);
}

.contact-banner {
    max-width: 1400px;
    margin: 0 auto 3rem;
}

.contact-banner img {
    width: 100%;
    height: 350px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(107, 127, 255, 0.15);
}

.contact-container {
    max-width: 1100px;
    margin: 0 auto;
    background: white;
    padding: 4rem;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    color: var(--gris-fonce);
    margin-bottom: 2rem;
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-item-title {
    font-weight: 600;
    color: var(--bleu-violet);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-family: 'Montserrat', sans-serif;
}

.contact-item-value {
    color: var(--gris-moyen);
    margin-left: 2.2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    color: var(--gris-fonce);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    font-family: 'Montserrat', sans-serif;
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    border: 2px solid var(--gris-clair);
    border-radius: 8px;
    font-family: 'Open Sans', sans-serif;
    font-size: 15px;
    transition: border-color 0.3s ease;
    background: var(--gris-clair);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--bleu-violet);
    background: white;
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

/* Footer */
footer {
    background: var(--gris-fonce);
    color: white;
    padding: 2.5rem 3rem;
    text-align: center;
}

footer p {
    color: rgba(255, 255, 255, 0.7);
}

/* Responsive */
@media (max-width: 1024px) {

    .hero-container,
    .about-content,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages-grid {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 36px;
    }

    h2 {
        font-size: 28px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 1rem 1.5rem;
    }

    .nav-links {
        gap: 1.5rem;
        font-size: 14px;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .steps {
        grid-template-columns: 1fr;
    }

    section {
        padding: 4rem 1.5rem;
    }
}