:root {
    --orange: #FF6B35;
    --vert: #2ECC71;
    --bleu: #3498DB;
    --dark: #2C3E50;
    --light: #F8F9FA;
    --gray: #6C757D;
    --white: #FFFFFF;
    --shadow: 0 10px 30px rgba(0,0,0,0.1);
    --shadow-hover: 0 15px 40px rgba(0,0,0,0.15);
}

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

body {
    font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    overflow-x: hidden;
}

/* Navigation Desktop */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--orange), var(--bleu));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.5px;
}

.logo span {
    background: linear-gradient(135deg, var(--vert), var(--bleu));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    transition: all 0.3s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--orange), var(--bleu));
    transition: width 0.3s ease;
}

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

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

/* Menu Burger pour mobile */
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 30px;
    height: 3px;
    background: var(--dark);
    margin: 3px 0;
    transition: all 0.3s;
    border-radius: 3px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -5px 0 30px rgba(0,0,0,0.1);
        z-index: 1000;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links li {
        opacity: 0;
        transform: translateX(50px);
        transition: all 0.3s ease;
    }
    
    .nav-links.active li {
        opacity: 1;
        transform: translateX(0);
    }
    
    .nav-links.active li:nth-child(1) { transition-delay: 0.1s; }
    .nav-links.active li:nth-child(2) { transition-delay: 0.2s; }
    .nav-links.active li:nth-child(3) { transition-delay: 0.3s; }
    .nav-links.active li:nth-child(4) { transition-delay: 0.4s; }
    .nav-links.active li:nth-child(5) { transition-delay: 0.5s; }
    
    .nav-links a {
        font-size: 1.2rem;
    }
}

/* Hero Section améliorée */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, rgba(255,107,53,0.9), rgba(52,152,219,0.9)), url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-content {
    animation: fadeInUp 1s ease;
    z-index: 2;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    font-weight: 800;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 40px;
    background: linear-gradient(135deg, var(--vert), #27ae60);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(46, 204, 113, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--orange);
    color: var(--orange);
    box-shadow: none;
}

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

/* Sections */
section {
    padding: 100px 0;
    position: relative;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--orange), var(--bleu));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-subtitle {
    text-align: center;
    color: var(--gray);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

/* Services Cards améliorées */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.service-card {
    text-align: center;
    padding: 2.5rem 2rem;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

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

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    font-size: 3.5rem;
    background: linear-gradient(135deg, var(--orange), var(--bleu));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

/* Projects Grid amélioré */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.4s;
    position: relative;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.project-card img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    color: var(--orange);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.project-category {
    display: inline-block;
    padding: 0.3rem 1rem;
    background: linear-gradient(135deg, var(--bleu), #2980b9);
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

/* Contact Form amélioré */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    transition: all 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--orange);
    box-shadow: 0 0 0 3px rgba(255,107,53,0.1);
}

/* Footer amélioré */
footer {
    background: linear-gradient(135deg, var(--dark), #1a252f);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ecf0f1;
    text-decoration: none;
    transition: color 0.3s;
}

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

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--orange);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* WhatsApp Button */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #25D366;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 30px;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
    z-index: 1000;
    transition: all 0.3s;
    animation: pulse 2s infinite;
}

.whatsapp-btn:hover {
    transform: scale(1.1) rotate(360deg);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* Chatbot amélioré */
.chatbot-btn {
    position: fixed;
    bottom: 100px;
    right: 30px;
    background: linear-gradient(135deg, var(--bleu), #2980b9);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 30px;
    cursor: pointer;
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: all 0.3s;
}

.chatbot-btn:hover {
    transform: scale(1.1);
}

.chatbot-window {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 380px;
    height: 550px;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-hover);
    display: none;
    flex-direction: column;
    z-index: 1001;
    animation: slideInUp 0.3s ease;
    overflow: hidden;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chatbot-header {
    background: linear-gradient(135deg, var(--bleu), #2980b9);
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chatbot-header h3 {
    margin: 0;
    font-size: 1.1rem;
}

.close-chatbot {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.3s;
}

.close-chatbot:hover {
    transform: rotate(90deg);
}

.chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: #f8f9fa;
}

.message {
    margin-bottom: 1rem;
    padding: 0.8rem 1rem;
    border-radius: 15px;
    max-width: 80%;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    background: linear-gradient(135deg, var(--bleu), #2980b9);
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 5px;
}

.message.bot {
    background: white;
    color: var(--dark);
    margin-right: auto;
    border-bottom-left-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.chatbot-input {
    display: flex;
    padding: 1rem;
    background: white;
    border-top: 1px solid #e0e0e0;
}

.chatbot-input input {
    flex: 1;
    padding: 0.8rem;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    margin-right: 0.5rem;
    transition: all 0.3s;
}

.chatbot-input input:focus {
    outline: none;
    border-color: var(--bleu);
}

.chatbot-input button {
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, var(--bleu), #2980b9);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
}

.chatbot-input button:hover {
    transform: scale(1.05);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .chatbot-window {
        width: calc(100% - 60px);
        left: 30px;
        right: 30px;
        bottom: 100px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* Scroll animations */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Modal pour l'aperçu des projets */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    max-width: 90%;
    width: 900px;
    max-height: 90%;
    border-radius: 20px;
    overflow-y: auto;
    position: relative;
    animation: slideInUp 0.4s ease;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: white;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 2001;
    background: rgba(0,0,0,0.5);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: #FF6B35;
    transform: rotate(90deg);
}

.modal-body {
    padding: 2rem;
}

.modal-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: 15px;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 2rem;
    color: #2C3E50;
    margin-bottom: 0.5rem;
}

.modal-category {
    display: inline-block;
    padding: 0.3rem 1rem;
    background: linear-gradient(135deg, #FF6B35, #3498DB);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.modal-description {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #555;
    margin-bottom: 1.5rem;
}

.modal-details {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 10px;
    margin-top: 1rem;
}

.modal-details h4 {
    color: #FF6B35;
    margin-bottom: 0.5rem;
}

.modal-details p {
    margin: 0.5rem 0;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}