/* Variables */
:root {
    --gris: #404040;
    --jaune: #fedd2b;
    --blanc: #fff;
    --gris-clair: #f5f5f5;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--gris);
    line-height: 1.6;
    background: var(--blanc);
    position: relative;
}

/* Canvas Background */
#neural-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    background: var(--blanc);
    pointer-events: none;
}

/* Icônes */
.feature-icon {
    color: var(--jaune);
    margin-right: 10px;
}

.footer-section i {
    color: var(--jaune);
    width: 20px;
    text-align: center;
    margin-right: 10px;
}

.footer-section a {
    color: var(--blanc);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--jaune);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    padding: 1px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    text-decoration: none;
    display: inline-block;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0px;
}

.logo img {
    height: 110px;
    width: auto;
}

.navbar .logo-text {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--jaune) 0%, var(--gris) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-left: -15px;
}


.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--gris);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--jaune);
}

.btn-devis {
    background-color: var(--jaune);
    color: var(--gris) !important;
    padding: 10px 25px;
    border-radius: 25px;
    font-weight: 600;
}

.btn-devis:hover {
    background-color: #e5c625;
    color: var(--gris) !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--gris);
    transition: 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(64, 64, 64, 0.6), rgba(42, 42, 42, 0.6)), url('image/HERO3.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 120px 0;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: 700;
    color: var(--blanc);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 22px;
    color: var(--blanc);
    margin-bottom: 40px;
    opacity: 0.9;
}

.btn-primary {
    display: inline-block;
    background-color: var(--jaune);
    color: var(--gris);
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s;
}

.btn-primary:hover {
    background-color: #e5c625;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(254, 221, 43, 0.3);
}

/* Services */
.services {
    padding: 80px 0;
    background: transparent;
    position: relative;
    z-index: 1;
}

.section-title {
    text-align: center;
    font-size: 42px;
    font-weight: 700;
    color: var(--gris);
    margin-bottom: 60px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: rgba(255, 255, 255, 0.9);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.service-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.service-icon img {
    width: 140px;
    height: 140px;
    object-fit: cover;
    border-radius: 20px;
    transition: transform 0.3s ease;
}

.service-card:hover .service-icon img {
    transform: scale(1.05);
}

.service-card h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--gris);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--gris);
    opacity: 0.8;
    font-size: 16px;
}

/* About */
.about {
    padding: 80px 0;
    background: transparent;
    position: relative;
    z-index: 1;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    text-align: left;
    margin-bottom: 30px;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 18px;
    line-height: 1.8;
}

.about-features {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 18px;
}

.feature-icon {
    background: var(--jaune);
    color: var(--gris);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.about-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

.about-image:hover img {
    transform: scale(1.02);
}

/* Devis */
.devis {
    padding: 80px 0;
    background: transparent;
    position: relative;
    z-index: 1;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--gris);
    margin-bottom: 50px;
    opacity: 0.8;
}

.devis-form {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.9);
    padding: 50px;
    border-radius: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
}

.form-group label {
    font-weight: 500;
    color: var(--gris);
    margin-bottom: 8px;
    font-size: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    font-family: 'Poppins', sans-serif;
    font-size: 16px;
    color: var(--gris);
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--jaune);
}

/* Validation visuelle des champs */
.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
    border-color: #dc3545;
    background-color: #fff5f5;
}

.form-group input:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
    border-color: #28a745;
    background-color: #f0fff4;
}

.form-group input:disabled,
.form-group button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    background: var(--jaune);
    color: var(--gris);
    padding: 15px;
    border: none;
    border-radius: 30px;
    font-family: 'Poppins', sans-serif;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-submit:hover {
    background-color: #e5c625;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(254, 221, 43, 0.3);
}

.form-message {
    text-align: center;
    margin-top: 20px;
    padding: 15px;
    border-radius: 15px;
    font-weight: 500;
    display: none;
    transition: all 0.3s ease;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

.form-message.info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
    display: block;
}

/* Footer */
.footer {
    background: var(--gris);
    color: var(--blanc);
    padding: 60px 0 20px;
    position: relative;
    z-index: 1;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    color: var(--jaune);
    margin-bottom: 20px;
    font-size: 20px;
}

.footer-section p {
    color: var(--blanc);
    margin-bottom: 10px;
    opacity: 0.9;
}

.footer .logo {
    margin-bottom: 10px;
    gap: 0px;
}

.footer .logo img {
    height: 80px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: all 0.3s;
}

.footer .logo-text {
    font-size: 28px;
    margin-left: -10px;
    font-weight: 700;
    color: var(--blanc);
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--jaune) 0%, #fff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 10px rgba(254, 221, 43, 0.3);
    transition: all 0.3s;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: var(--blanc);
    opacity: 0.7;
}

/* Animations au défilement */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s, transform 0.5s;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s, transform 0.6s;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s, transform 0.6s;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.5s, transform 0.5s;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

.slide-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.5s, transform 0.5s;
}

.slide-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Délais d'animation */
.service-card:nth-child(1), .feature:nth-child(1) { transition-delay: 0.05s; }
.service-card:nth-child(2), .feature:nth-child(2) { transition-delay: 0.1s; }
.service-card:nth-child(3), .feature:nth-child(3) { transition-delay: 0.15s; }
.service-card:nth-child(4), .feature:nth-child(4) { transition-delay: 0.2s; }
.service-card:nth-child(5) { transition-delay: 0.25s; }
.service-card:nth-child(6) { transition-delay: 0.3s; }

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        padding: 5px 0;
    }

    .logo img {
        height: 60px;
    }

    .navbar .logo-text {
        font-size: 24px;
        margin-left: -10px;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--blanc);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        padding: 60px 0;
    }

    .hero-content h1 {
        font-size: 28px;
        margin-bottom: 15px;
    }

    .hero-content p {
        font-size: 16px;
        margin-bottom: 25px;
    }

    .btn-primary {
        padding: 12px 30px;
        font-size: 16px;
    }

    .section-title {
        font-size: 32px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .about-text p {
        font-size: 15px;
        margin-bottom: 15px;
    }

    .about-features {
        margin-top: 20px;
        gap: 10px;
    }

    .feature {
        font-size: 15px;
    }

    .feature-icon {
        width: 25px;
        height: 25px;
        font-size: 12px;
    }

    .about-image img {
        height: 250px;
    }

    .devis {
        padding: 40px 0;
    }

    .section-subtitle {
        font-size: 15px;
        margin-bottom: 30px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-bottom: 15px;
    }

    .devis-form {
        padding: 25px 15px;
    }

    .form-group {
        margin-bottom: 15px;
    }

    .form-group label {
        font-size: 14px;
        margin-bottom: 6px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px 12px;
        font-size: 14px;
    }

    .form-group textarea {
        min-height: 100px;
    }

    .btn-submit {
        padding: 12px;
        font-size: 16px;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .service-card {
        padding: 20px 15px;
    }

    .service-icon img {
        width: 80px;
        height: 80px;
    }

    .service-card h3 {
        font-size: 16px;
        margin-bottom: 10px;
    }

    .service-card p {
        font-size: 13px;
    }
}