/* ===========================================
   BinAIskIT - Styles principaux
   =========================================== */

/* Variables CSS */
:root {
    /* Couleurs principales (du logo) */
    --color-primary-dark: #1e3a5f;
    --color-primary: #2d5a87;
    --color-primary-light: #3d6b99;
    --color-primary-lighter: #6a9bc3;

    /* Couleurs neutres */
    --color-white: #ffffff;
    --color-offwhite: #f8f9fa;
    --color-gray-100: #f1f3f5;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-400: #ced4da;
    --color-gray-500: #adb5bd;
    --color-gray-600: #6c757d;
    --color-gray-700: #495057;
    --color-gray-800: #343a40;
    --color-gray-900: #212529;

    /* Typographie */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Espacements */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Autres */
    --border-radius: 8px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Reset et base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height-base);
    color: var(--color-gray-800);
    background-color: var(--color-offwhite);
}

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

a:hover {
    color: var(--color-primary-dark);
}

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

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

/* ===========================================
   Navigation
   =========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: var(--spacing-md) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-primary-dark);
}

.nav-logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-menu a {
    color: var(--color-gray-700);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
}

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

.btn-nav {
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: var(--spacing-sm) var(--spacing-lg) !important;
    border-radius: var(--border-radius);
}

.btn-nav:hover {
    background: var(--color-primary-dark);
    color: var(--color-white) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-gray-700);
    transition: var(--transition);
}

/* ===========================================
   Hero Section
   =========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--color-offwhite) 0%, var(--color-gray-100) 100%);
    background-size: cover;
    background-position: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    padding-top: 100px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.3) 0%, rgba(255,255,255,0.5) 100%);
    z-index: 0;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 1;
}

.hero-logo {
    width: 150px;
    height: auto;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease-out;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-background {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: url('../images/image\ en\ tete.jpg') center/cover no-repeat;
    opacity: 0.05;
}

/* Boutons */
.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

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

/* ===========================================
   Sections
   =========================================== */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary-dark);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

/* ===========================================
   Offres Grid
   =========================================== */
.offres {
    background: var(--color-white);
}

.offres-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    max-width: 1100px;
    margin: 0 auto;
}

.offres-grid .offre-card:nth-child(4),
.offres-grid .offre-card:nth-child(5) {
    max-width: 100%;
}

@media (max-width: 992px) {
    .offres-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 700px;
    }
}

.offre-card {
    background: var(--color-offwhite);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--color-gray-200);
    display: block;
    color: inherit;
}

.offre-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-lighter);
    color: inherit;
}

.offre-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary-lighter) 0%, var(--color-primary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-white);
}

.offre-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}

.offre-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.offre-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-md);
}

.offre-card p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.offre-link {
    color: var(--color-primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.offre-card:hover .offre-link {
    color: var(--color-primary-dark);
}

/* ===========================================
   Chiffres
   =========================================== */
.chiffres {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
}

.chiffres-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    text-align: center;
}

.chiffre-item {
    padding: var(--spacing-lg);
}

.chiffre-number {
    font-size: 3.5rem;
    font-weight: 700;
    display: inline;
}

.chiffre-suffix {
    font-size: 2rem;
    font-weight: 600;
}

.chiffre-label {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: 1rem;
    opacity: 0.9;
}

/* ===========================================
   À Propos
   =========================================== */
.apropos {
    background: var(--color-white);
}

.apropos-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.apropos-text .section-title {
    text-align: left;
}

.apropos-intro {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
}

.valeurs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.valeur-item {
    padding: var(--spacing-lg);
    background: var(--color-offwhite);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--color-primary);
}

.valeur-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.valeur-item p {
    font-size: 0.9rem;
    color: var(--color-gray-600);
    line-height: 1.6;
}

.apropos-image img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ===========================================
   Témoignage
   =========================================== */
.temoignage {
    background: var(--color-offwhite);
}

.temoignage-quote {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.temoignage-quote p {
    font-size: 1.5rem;
    font-style: italic;
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.temoignage-quote p::before {
    content: '"';
    font-size: 4rem;
    color: var(--color-primary-lighter);
    position: absolute;
    top: -20px;
    left: -20px;
    font-family: Georgia, serif;
    opacity: 0.5;
}

.temoignage-quote footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.temoignage-quote cite {
    font-style: normal;
    font-weight: 600;
    color: var(--color-primary-dark);
    font-size: 1.125rem;
}

.temoignage-quote footer span {
    color: var(--color-gray-500);
    font-size: 0.9rem;
}

/* ===========================================
   Contact
   =========================================== */
.contact {
    background: var(--color-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.contact-item svg {
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 4px;
}

.contact-item strong {
    display: block;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-xs);
}

.contact-item a,
.contact-item span {
    color: var(--color-gray-600);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(45, 90, 135, 0.1);
}

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

.contact-form .btn-primary {
    align-self: flex-start;
}

/* ===========================================
   Footer
   =========================================== */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-brand img {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-brand span {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-white);
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-links h4 {
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a,
.footer-links li {
    color: var(--color-gray-400);
    font-size: 0.9rem;
}

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

.footer-bottom {
    border-top: 1px solid var(--color-gray-700);
    padding-top: var(--spacing-xl);
    text-align: center;
    font-size: 0.9rem;
}

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

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

/* ===========================================
   Responsive Design
   =========================================== */
@media (max-width: 992px) {
    .apropos-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .apropos-image {
        order: -1;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateX(100%);
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-toggle {
        display: flex;
    }

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

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        min-height: auto;
        padding: 120px var(--spacing-lg) var(--spacing-3xl);
    }

    .hero-logo {
        width: 100px;
    }

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

    .temoignage-quote p {
        font-size: 1.25rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    .offres-grid {
        grid-template-columns: 1fr;
        max-width: 450px;
    }
}

@media (max-width: 480px) {
    .chiffres-grid {
        grid-template-columns: 1fr 1fr;
    }

    .chiffre-number {
        font-size: 2.5rem;
    }
}

/* ===========================================
   Pages d'offres
   =========================================== */
.page-header {
    background: linear-gradient(135deg, var(--color-offwhite) 0%, var(--color-gray-100) 100%);
    padding: 150px var(--spacing-lg) var(--spacing-3xl);
    text-align: center;
}

.page-header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-md);
}

.page-header .subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto;
}

.content-section {
    padding: var(--spacing-3xl) 0;
}

.content-section:nth-child(even) {
    background: var(--color-gray-100);
}

.content-section h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-lg);
}

.content-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-800);
    margin: var(--spacing-xl) 0 var(--spacing-md);
}

.content-section p {
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.content-section ul {
    list-style: none;
    padding-left: 0;
}

.content-section ul li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--color-gray-600);
}

.content-section ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* Expandable sections */
.expandable {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    background: var(--color-white);
}

.expandable-header {
    padding: var(--spacing-lg);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--color-primary-dark);
}

.expandable-header::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--color-primary);
    transition: var(--transition);
}

.expandable.active .expandable-header::after {
    transform: rotate(45deg);
}

.expandable-content {
    display: none;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.expandable.active .expandable-content {
    display: block;
}

/* Stats grid for offer pages */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-gray-200);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-gray-600);
    margin-top: var(--spacing-xs);
}

/* Source citation under stats */
.stat-source {
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-gray-500);
    margin-top: var(--spacing-sm);
    font-style: italic;
}

.stats-grid + .stat-source,
.chiffres-grid + .stat-source {
    margin-top: var(--spacing-md);
}

.chiffres .stat-source {
    color: rgba(255, 255, 255, 0.65);
}

.chiffre-label .stat-source-inline {
    display: block;
    font-size: 0.75rem;
    opacity: 0.7;
    font-style: italic;
    margin-top: var(--spacing-xs);
}

/* Testimonial card */
.testimonial-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    border-left: 4px solid var(--color-primary);
    margin: var(--spacing-xl) 0;
}

.testimonial-card p {
    font-style: italic;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.testimonial-card .author {
    font-weight: 600;
    color: var(--color-primary-dark);
}

.testimonial-card .role {
    font-size: 0.9rem;
    color: var(--color-gray-500);
}

/* FAQ Section */
.faq-item {
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--spacing-lg) 0;
}

.faq-question {
    font-weight: 600;
    color: var(--color-primary-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: '+';
    font-size: 1.25rem;
    color: var(--color-primary);
    transition: var(--transition);
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    display: none;
    padding-top: var(--spacing-md);
    color: var(--color-gray-600);
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    display: block;
}

/* Back to home link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
}

.back-link:hover {
    color: var(--color-primary-dark);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-3xl);
    border-radius: var(--border-radius-lg);
    margin: var(--spacing-3xl) 0;
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

.cta-section .btn-primary {
    background: var(--color-white);
    color: var(--color-primary-dark);
}

.cta-section .btn-primary:hover {
    background: var(--color-offwhite);
}

/* Sub-services grid */
.sub-services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.sub-service-card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.sub-service-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-lighter);
}

.sub-service-card h4 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.sub-service-card p {
    font-size: 0.95rem;
}

/* Legal page styles */
.legal-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
}

.legal-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-gray-800);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.legal-content p,
.legal-content li {
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.legal-content ul {
    list-style: disc;
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.legal-content ul li {
    padding: var(--spacing-xs) 0;
}

.legal-content ul li::before {
    content: none;
}

/* Footer legal links */
.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-top: var(--spacing-md);
    font-size: 0.85rem;
}

.footer-legal a {
    color: var(--color-gray-500);
}

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