/* ================================
   DriveFlow - Stylesheet Principal
   Design moderne 2026
   ================================ */

/* === Variables CSS === */
:root {
    /* Couleurs principales */
    --color-primary: #2C5F9D;
    --color-primary-dark: #1e4470;
    --color-primary-light: #3d7bc4;
    --color-secondary: #00A8E8;
    --color-accent: #FF6B35;
    --color-success: #28a745;
    
    /* Couleurs neutres */
    --color-dark: #1a1a1a;
    --color-gray: #6c757d;
    --color-gray-light: #e9ecef;
    --color-white: #ffffff;
    
    /* Typographie */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Bordures */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    /* Ombres */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* === Container === */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* === Header === */
.header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-normal);
    width: 100%;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    gap: 2rem;
    flex-wrap: nowrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--color-dark);
    transition: var(--transition-fast);
    position: relative;
    white-space: nowrap;
    padding: 0.5rem 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-fast);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.btn-phone {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-gray-light);
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    transition: var(--transition-fast);
}

.btn-phone:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

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

/* === Boutons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-semibold);
    font-size: 1rem;
    transition: var(--transition-fast);
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background-color: #0088bb;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-white {
    background-color: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    background-color: var(--color-gray-light);
    transform: translateY(-2px);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

/* === Hero Section === */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(28, 69, 112, 0.95) 0%, rgba(44, 95, 157, 0.85) 50%, rgba(0, 168, 232, 0.75) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--color-white);
    max-width: 800px;
    padding: var(--spacing-xxl) 0;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-extrabold);
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.75rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.95);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.4s both;
}

.badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    font-weight: var(--font-weight-medium);
}

.badge i {
    font-size: 1.25rem;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.5s both;
}

/* === Sections === */
section {
    padding: var(--spacing-xxl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xxl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray);
    line-height: 1.7;
}

/* === Services Overview === */
.services-overview {
    background-color: var(--color-gray-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.service-icon i {
    font-size: 2rem;
    color: var(--color-white);
}

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

.service-card > p {
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.service-features {
    margin-bottom: var(--spacing-lg);
}

.service-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray);
}

.service-features i {
    color: var(--color-success);
    font-size: 1.125rem;
}

/* === Why Choose Us === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-lg);
    transition: var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    transition: var(--transition-normal);
}

.feature-item:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon i {
    font-size: 2rem;
    color: var(--color-white);
}

.feature-item h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.feature-item p {
    color: var(--color-gray);
    line-height: 1.6;
}

/* === Process Steps === */
.process-section {
    background-color: var(--color-gray-light);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    position: relative;
}

.process-step {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    position: relative;
    transition: var(--transition-normal);
}

.process-step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-accent), #ff8c5a);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: 1.25rem;
}

.step-icon {
    width: 70px;
    height: 70px;
    background-color: var(--color-gray-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: var(--spacing-lg) auto var(--spacing-md);
}

.step-icon i {
    font-size: 2rem;
    color: var(--color-primary);
}

.process-step h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.process-step p {
    color: var(--color-gray);
    line-height: 1.6;
}

/* === Testimonials === */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.testimonial-rating {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.testimonial-rating i {
    color: #ffc107;
    font-size: 1.125rem;
}

.testimonial-text {
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-avatar i {
    font-size: 1.5rem;
    color: var(--color-white);
}

.author-info h4 {
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
    margin-bottom: 2px;
}

.author-info p {
    font-size: 0.875rem;
    color: var(--color-gray);
}

/* === CTA Section === */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-xxl) 0;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

/* === Footer === */
.footer {
    background-color: var(--color-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    height: 40px;
    filter: brightness(0) invert(1);
}

.footer-logo span {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.footer-tagline {
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social 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: var(--transition-fast);
}

.footer-social a:hover {
    background-color: var(--color-primary);
    transform: translateY(-3px);
}

.footer-social i {
    font-size: 1.125rem;
}

.footer-column h3 {
    color: var(--color-white);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    transition: var(--transition-fast);
}

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

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.footer-contact i {
    color: var(--color-secondary);
    width: 20px;
}

.footer-contact a {
    transition: var(--transition-fast);
}

.footer-contact a:hover {
    color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a:hover {
    color: var(--color-white);
}

/* === Chatbot === */
.chatbot {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 350px;
    max-height: 500px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    display: none;
    flex-direction: column;
    z-index: 999;
    animation: slideInUp 0.3s ease;
}

.chatbot.active {
    display: flex;
}

.chatbot-header {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.chatbot-header span {
    flex: 1;
    font-weight: var(--font-weight-semibold);
}

.chatbot-close {
    color: var(--color-white);
    font-size: 1.25rem;
    transition: var(--transition-fast);
}

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

.chatbot-messages {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
    max-height: 300px;
}

.chatbot-message {
    margin-bottom: var(--spacing-md);
    animation: fadeIn 0.3s ease;
}

.chatbot-message p {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    line-height: 1.5;
}

.chatbot-message.bot p {
    background-color: var(--color-gray-light);
    color: var(--color-dark);
}

.chatbot-message.user p {
    background-color: var(--color-primary);
    color: var(--color-white);
    margin-left: auto;
}

.chatbot-quick-questions {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-gray-light);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.quick-question {
    background-color: var(--color-gray-light);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    text-align: left;
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.quick-question:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.chatbot-trigger {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    z-index: 998;
    transition: var(--transition-normal);
}

.chatbot-trigger:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.chatbot-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 24px;
    height: 24px;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
}

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

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

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Responsive === */
@media (max-width: 1024px) {
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: white;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        display: none;
        padding: 1.5rem 0;
        z-index: 999;
    }
    
    .nav.active {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0.5rem;
        align-items: stretch;
        padding: 0 1.5rem;
    }
    
    .nav-link {
        display: block;
        padding: 0.75rem 1rem;
        border-radius: 0.5rem;
    }
    
    .nav-link:hover {
        background-color: var(--color-gray-light);
    }
    
    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
        color: var(--color-primary);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .services-grid,
    .features-grid,
    .process-steps,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    .header-actions .btn-phone {
        display: none;
    }
    
    .chatbot {
        width: calc(100% - 40px);
        right: 20px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }
    
    .logo img {
        height: 40px;
    }
    
    .logo-text {
        font-size: 1.25rem;
    }
}