:root {
    --primary: #003366;
    --secondary: #ff6b6b;
    --accent: #ffd93d;
    --dark: #1a1a1a;
    --light: #f8f9fa;
    --gray: #6c757d;
    --success: #28a745;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 3px;
    background-color: var(--secondary);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

.section-title p {
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--secondary);
    color: white;
    border-radius: 5px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn:hover {
    background-color: #ff5252;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.3);
}

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

.btn-outline:hover {
    background-color: var(--secondary);
    color: white;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
}

.logo span {
    color: var(--secondary);
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    font-weight: 500;
    position: relative;
}

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

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary);
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.8)),
                url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    text-align: center;
    color: white;
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.3s;
    animation-fill-mode: both;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    animation: fadeInUp 1s ease 0.6s;
    animation-fill-mode: both;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.service-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.service-img {
    height: 200px;
    background-size: cover;
    background-position: center;
}

.service-content {
    padding: 25px;
}

.service-content h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary);
}

.service-content p {
    margin-bottom: 20px;
    color: var(--gray);
}

.service-content ul {
    margin-bottom: 20px;
}

.service-content li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 25px;
}

.service-content li::before {
    content: '\f00c';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--secondary);
}

/* About Section */
.about {
    position: relative;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--gray);
}

.about-text .highlight {
    color: var(--primary);
    font-weight: 600;
}

.about-image {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about-image img {
    width: 100%;
    height: auto;
    transition: transform 0.5s ease;
}

.about-image:hover img {
    transform: scale(1.05);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 10px;
}

.stat-text {
    color: var(--gray);
    font-weight: 500;
}

/* Contact Section */
.contact {
    background-color: var(--light);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-info h3 {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background-color: var(--light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    color: var(--secondary);
}

.contact-text h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--primary);
}

.contact-text p {
    color: var(--gray);
}

.contact-form {
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--primary);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: #fff;
}

.form-control:hover {
    border-color: #b3b3b3;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
    transform: translateY(-1px);
}

.form-control.error {
    border-color: #dc3545;
}

.error-message {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    position: absolute;
    bottom: -20px;
    left: 0;
}

.success-message {
    color: #28a745;
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    padding: 0.75rem 1.25rem;
    border-radius: 4px;
    margin-top: 1rem;
    text-align: center;
}

/* Animation pour les messages */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.error-message, .success-message {
    animation: slideIn 0.3s ease-out;
}

/* Style des champs en focus */
.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.1);
}

/* Style des champs valides */
.form-control:valid:not(.error) {
    border-color: #28a745;
}

/* Style du bouton submit */
.contact-form button[type="submit"] {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.contact-form button[type="submit"]:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.contact-form button[type="submit"]:active {
    transform: translateY(0);
    box-shadow: none;
}

/* Animation de chargement */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.fa-spinner {
    margin-right: 8px;
    animation: spin 1s linear infinite;
}

/* Messages de feedback */
.success-message,
.error-message {
    padding: 1rem;
    border-radius: 4px;
    margin-top: 1rem;
    font-weight: 500;
    text-align: center;
    opacity: 0;
    transform: translateY(-10px);
    animation: slideIn 0.3s ease forwards;
}

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

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

.global-error {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    min-width: 300px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Responsive */
@media (max-width: 992px) {
    .about-content,
    .contact-container {
        grid-template-columns: 1fr;
    }

    .about-image {
        order: -1;
    }

    .hero h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: white;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }

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

    .mobile-menu-btn {
        display: block;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .section {
        padding: 60px 0;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .form-control {
        font-size: 16px; /* Évite le zoom sur mobile */
    }
    
    .global-error {
        top: auto;
        bottom: 20px;
        right: 20px;
        left: 20px;
        min-width: auto;
    }
}

/* Accessibilité */
.form-control:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* État désactivé du bouton */
.contact-form button[type="submit"]:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Footer */
footer {
    background-color: var(--dark);
    color: white;
    padding: 80px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-column h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: var(--secondary);
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 2px;
    background-color: var(--secondary);
    bottom: 0;
    left: 0;
}

.footer-column p {
    margin-bottom: 20px;
    color: #adb5bd;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #adb5bd;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--secondary);
    transform: translateY(-5px);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #adb5bd;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}