/* main.css - Version corrigée complète */

/* Root Variables */
:root {
    /* Couleurs principales */
    --primary: #275787;
    --primary-dark: #1a3e60;
    --primary-light: #5a84b3;
    --secondary: #876327;
    --accent: #871E50;
    
    /* Couleurs neutres */
    --dark: #2d2d2d;
    --gray: #8A8A8A;
    --light-gray: #e0e0e0;
    --ultra-light-gray: #f5f5f5;
    --white: #ffffff;
    --text-color: #2d2d2d;
    --light-bg: #f8f9fa;
    --silver: #C0C0C0;
    --primary-color: #275787;
    --secondary-color: #876327;
    --accent-color: #871E50;
    
    /* Typographie */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Manrope', sans-serif;
    
    /* Espacements */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Bordures et ombres */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
}

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

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Josefin Sans', 'Segoe UI', 'Geneva', Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
    padding-top: 120px;
}

/* Header Styling */
.site-header {
    background-color: var(--dark);
    color: #fff;
    padding: 1.5rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.site-header.scrolled {
    background-color: rgba(45, 45, 45, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    padding: 1rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: transform 0.3s ease;
    text-decoration: none;
}

.logo:hover {
    transform: scale(1.05);
}

.logo img {
    width: 60px;
    height: 60px;
}

.logo span {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: #C0C0C0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Navigation principale */
.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
    align-items: center;
}

.nav-list li {
    position: relative;
}

/* Liens navigation */
.nav-list a {
    color: #C0C0C0;
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    display: block;
}

/* Effet hover pour tous les liens sauf le bouton contact */
.nav-list a:not(.btn-primary)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 2px;
}

.nav-list a:not(.btn-primary):hover {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(111, 180, 222, 0.5);
    transform: translateY(-2px);
}

.nav-list a:not(.btn-primary):hover::after {
    width: 100%;
    box-shadow: 0 0 10px rgba(111, 180, 222, 0.6);
}

/* Bouton contact */
.nav-list a.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white !important;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(39, 87, 135, 0.3);
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-weight: 600;
}

.nav-list a.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(39, 87, 135, 0.4);
    color: white !important;
    text-shadow: none;
}

/* Menu mobile - bouton hamburger */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    width: 40px;
    height: 40px;
    justify-content: center;
    align-items: center;
    gap: 4px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #C0C0C0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* Animation hamburger */
.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(26, 26, 26, 0.9), rgba(26, 26, 26, 0.8)), url('/api/placeholder/1200/600') no-repeat center/cover;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding: 2rem 1rem;
}

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

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--silver);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: var(--accent-color);
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Boutons généraux */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn-primary::before,
.btn-secondary::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 ease;
}

.btn-primary:hover::before,
.btn-secondary:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    box-shadow: 0 4px 15px rgba(39, 87, 135, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(39, 87, 135, 0.4);
}

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

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(39, 87, 135, 0.3);
}

/* Sections générales */
.section-heading {
    text-align: center;
    margin-bottom: 3rem;
}

.section-heading.left-aligned {
    text-align: left;
}

.section-heading h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
}

.section-heading p {
    font-size: 1.2rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

.section-heading.left-aligned p {
    margin: 0;
}

/* Section Problèmes */
.section-problems {
    padding: var(--spacing-xxl) 0;
    background-color: var(--white);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.problem-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    border-top: 4px solid var(--accent-color);
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--accent));
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.problem-card:hover::before {
    transform: translateX(0);
}

.problem-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.problem-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

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

.problem-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* Section Solution */
.section-solution {
    padding: var(--spacing-xxl) 0;
    background-color: var(--ultra-light-gray);
}

.solution-content {
    display: flex;
    gap: 3rem;
    align-items: center;
    margin-top: 3rem;
}

.solution-image {
    flex: 1;
    max-width: 500px;
}

.solution-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.solution-text {
    flex: 1;
}

.solution-text h3 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.solution-text p {
    color: var(--gray);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.solution-features {
    list-style: none;
    margin-bottom: 2rem;
}

.solution-features li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.solution-features i {
    color: var(--primary);
    font-size: 1.2rem;
}

/* Section Expertise */
.section-expertise {
    padding: var(--spacing-xxl) 0;
    background-color: var(--white);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.expertise-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    border-top: 4px solid var(--primary);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--accent));
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.expertise-card:hover::before {
    transform: translateX(0);
}

.expertise-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.expertise-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

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

.expertise-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* Section Pricing */
.section-pricing {
    padding: var(--spacing-xxl) 0;
    background-color: var(--ultra-light-gray);
}

.pricing-grid {
    margin-top: 3rem;
}

.pricing-category {
    margin-bottom: 4rem;
}

.pricing-category h3 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 2rem;
    text-align: center;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.pricing-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    overflow: hidden;
    position: relative;
}

.pricing-card.featured {
    border: 3px solid var(--primary);
    transform: scale(1.05);
}

.pricing-badge {
    background: var(--primary);
    color: white;
    padding: 0.5rem 1rem;
    position: absolute;
    top: 0;
    right: 0;
    font-size: 0.9rem;
    font-weight: 600;
}

.pricing-header {
    padding: 2rem;
    text-align: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
}

.pricing-header h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.pricing-price {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.pricing-period {
    font-size: 1rem;
    opacity: 0.8;
}

.pricing-body {
    padding: 2rem;
}

.pricing-body p {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.pricing-features i {
    color: var(--primary);
}

.pricing-footer {
    padding: 0 2rem 2rem;
    text-align: center;
}

/* Section Témoignages */
.section-testimonials {
    padding: var(--spacing-xxl) 0;
    background-color: var(--white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
}

.testimonial-quote {
    margin-bottom: 1.5rem;
}

.testimonial-quote i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.testimonial-quote p {
    color: var(--gray);
    line-height: 1.6;
    font-style: italic;
}

.author-info h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.author-info p {
    color: var(--gray);
    font-size: 0.9rem;
}

/* Section Cas d'usage */
.section-case-studies {
    padding: var(--spacing-xxl) 0;
    background-color: var(--ultra-light-gray);
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.case-study-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    overflow: hidden;
}

.case-study-card:hover {
    transform: translateY(-5px);
}

.case-study-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.case-study-content {
    padding: 2rem;
}

.case-study-content h3 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.case-study-content p {
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.btn-text {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.btn-text:hover {
    color: var(--primary-dark);
}

/* Section FAQ */
.section-faq {
    padding: var(--spacing-xxl) 0;
    background-color: var(--white);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    background-color: var(--white);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    cursor: pointer;
    background-color: var(--white);
    transition: background-color var(--transition-fast);
    border: none;
    width: 100%;
    text-align: left;
}

.faq-question:hover {
    background-color: var(--ultra-light-gray);
}

.faq-question h3 {
    margin-bottom: 0;
    font-size: 1.1rem;
    color: var(--dark);
    flex: 1;
}

.faq-toggle {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform var(--transition-medium);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: var(--spacing-md);
}

.faq-toggle.active {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    background-color: var(--ultra-light-gray);
    padding: 0 var(--spacing-md);
}

.faq-answer.active {
    max-height: 300px;
    padding: var(--spacing-md);
}

.faq-answer p {
    margin-bottom: 0;
    color: var(--gray);
    line-height: 1.6;
}

/* Section Contact */
.section-contact {
    padding: var(--spacing-xxl) 0;
    background-color: var(--ultra-light-gray);
}

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

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--primary);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ultra-light-gray);
    border-radius: 50%;
}

.contact-text h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

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

.contact-text a {
    color: var(--primary);
    text-decoration: none;
}

.contact-text a:hover {
    text-decoration: underline;
}

.social-links h4 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.social-icons a:hover {
    background: var(--primary-dark);
}

/* Formulaire de contact */
.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--light-gray);
    border-radius: 5px;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

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

.calendly-container {
    margin-top: 2rem;
    text-align: center;
    padding: 1.5rem;
    background: var(--ultra-light-gray);
    border-radius: 10px;
}

.calendly-container h3 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.calendly-container p {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

/* Footer */
.site-footer {
    background-color: var(--dark);
    color: var(--silver);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

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

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

.footer-logo span {
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.footer-nav h4,
.footer-legal h4,
.footer-contact h4 {
    color: white;
    margin-bottom: 1rem;
}

.footer-nav ul,
.footer-legal ul {
    list-style: none;
}

.footer-nav a,
.footer-legal a {
    color: var(--silver);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-nav a:hover,
.footer-legal a:hover {
    color: white;
}

.footer-contact address {
    font-style: normal;
    line-height: 1.6;
}

.footer-contact address p {
    margin-bottom: 0.5rem;
}

.footer-contact address i {
    margin-right: 0.5rem;
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--gray);
    padding-top: 1rem;
    text-align: center;
}

.copyright {
    margin-bottom: 0.5rem;
}

.disclaimer {
    font-size: 0.9rem;
    color: var(--gray);
    max-width: 800px;
    margin: 0 auto;
}

/* Animation d'apparition */
.animated {
    animation: slideInUp 0.6s ease forwards;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding-top: 80px;
    }
    
    .site-header {
        padding: 1rem 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--dark);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }
    
    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
        padding: 1rem 0;
    }
    
    .nav-list li {
        width: 100%;
    }
    
    .nav-list a {
        padding: 1rem 2rem;
        text-align: center;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-list a.btn-primary {
        margin: 1rem 2rem;
        text-align: center;
        border-bottom: none;
    }
    
    .header-content {
        padding: 0 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .section-heading h2 {
        font-size: 2rem;
    }
    
    .solution-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .pricing-cards {
        grid-template-columns: 1fr;
    }
    
    .problems-grid,
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid,
    .case-studies-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-heading h2 {
        font-size: 1.8rem;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .problem-card,
    .expertise-card,
    .testimonial-card {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
}

/* Améliorations supplémentaires */
.btn-text i {
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

.btn-text:hover i {
    transform: translateX(5px);
}

/* Effet de focus amélioré pour l'accessibilité */
.nav-list a:focus,
.btn-primary:focus,
.btn-secondary:focus,
.btn-text:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Scrollbar personnalisée */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Amélioration des transitions globales */
* {
    transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

/* Classes utilitaires */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-0 {
    margin-bottom: 0 !important;
}

.mb-1 {
    margin-bottom: 1rem !important;
}

.mb-2 {
    margin-bottom: 2rem !important;
}

.mt-0 {
    margin-top: 0 !important;
}

.mt-1 {
    margin-top: 1rem !important;
}

.mt-2 {
    margin-top: 2rem !important;
}