/* Reset et variables CSS */
:root {
    /* Couleurs principales */
    --primary-blue: #1B365D;
    --primary-orange: #FF6B35;
    --primary-green: #00A86B;
    --white: #FFFFFF;
    
    /* Couleurs PORTIA */
    --portia-violet: #9B59B6;
    --portia-orange: #FF6B35;
    --portia-rose: #E91E63;
    --portia-gradient: linear-gradient(135deg, #9B59B6 0%, #FF6B35 50%, #E91E63 100%);
    
    /* Couleurs secondaires */
    --dark-gray: #2C3E50;
    --light-gray: #F8F9FA;
    --gold: #FFD700;
    
    /* Typographie */
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Ombres */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--dark-gray);
    overflow-x: hidden;
    padding-top: 80px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: #ffffff;
    z-index: 1000;
    transition: var(--transition-normal);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav {
    padding: var(--spacing-sm) 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    z-index: 1001;
    position: relative;
}

.logo-img {
    height: 50px;
    width: auto;
    display: block !important;
    opacity: 1 !important;
    z-index: 1002;
    position: relative;
    max-width: 200px;
}

.logo-text {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin: 0;
}

.logo-subtitle {
    font-size: 0.8rem;
    color: var(--primary-orange);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle-line {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    transition: var(--transition-fast);
}

.nav-social {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.social-link-header {
    width: 35px;
    height: 35px;
    background: var(--primary-blue);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition-fast);
    font-size: 0.9rem;
}

.social-link-header:hover {
    background: var(--primary-orange);
    transform: translateY(-2px);
}

.x-logo-svg {
    width: 16px;
    height: 16px;
    color: white;
}

/* Boutons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-family: var(--font-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    text-align: center;
}

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

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

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

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

.btn-large {
    padding: calc(var(--spacing-md) / 3) calc(var(--spacing-lg) / 3);
    font-size: 0.8rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: transparent;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-banner.jpg') center/cover;
    opacity: 1;
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 2;
    min-height: 80vh;
}

.hero-content {
    animation: fadeInUp 1s ease;
    grid-column: 2;
    text-align: left;
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease 0.3s both;
    order: 1;
}

.hero-title-main {
    display: block;
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--white), var(--portia-rose));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-sub {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--portia-violet) 0%, var(--portia-orange) 50%, var(--portia-rose) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-orange);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease 0.3s both;
}

.hero-img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator {
    color: var(--white);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

/* Sections communes */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--dark-gray);
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.8;
}

/* About Section */
.about {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

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

.about-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.about-icon {
    width: 60px;
    height: 60px;
    background: var(--portia-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.about-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

.about-img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

.about-video {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

/* ZANA Section */
.zana {
    padding: var(--spacing-xxl) 0;
    background: var(--light-gray);
}

.zana-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin-bottom: var(--spacing-xxl);
}

.zana-video {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

.zana-image {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
}

.zana-link:hover .zana-image {
    /* Effet hover supprimé pour éviter les problèmes d'affichage */
}

.zana-info h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.zana-features {
    list-style: none;
    margin-top: var(--spacing-md);
}

.zana-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

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

.zana-specs {
    margin-bottom: var(--spacing-xxl);
}

.zana-specs h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.spec-item {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

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

.spec-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-orange);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.spec-label {
    font-weight: 600;
    color: var(--dark-gray);
}

.zana-usecases h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.usecases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.usecase-item {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

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

.usecase-icon {
    width: 80px;
    height: 80px;
    background: var(--portia-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
    margin: 0 auto var(--spacing-md);
}

.usecase-item h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

/* Impact Section */
.impact {
    padding: var(--spacing-xxl) 0;
    background: url('../images/impact-background.png') center/cover;
    color: var(--white);
    position: relative;
}

.impact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.impact .container {
    position: relative;
    z-index: 2;
}

.impact .section-title,
.impact .section-subtitle {
    color: var(--white) !important;
}

.impact-metrics {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.metric-item {
    text-align: center;
    padding: var(--spacing-lg);
    flex: 1;
    min-width: 200px;
}

.metric-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-orange);
    display: block;
}

.metric-unit {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--white);
}

.metric-label {
    font-size: 1rem;
    opacity: 0.9;
    margin-top: var(--spacing-xs);
}

/* Sovereignty Section */
.sovereignty {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

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

.sovereignty-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.sovereignty-benefits {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.sovereignty-benefits li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.sovereignty-benefits i {
    color: var(--primary-green);
    font-size: 1.2rem;
}

.sovereignty-img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

/* Contact Section */
.contact {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 0.78fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--portia-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

.form {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: 15px;
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid transparent;
    border-radius: 8px;
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    background: var(--white);
    transition: var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-orange);
}

.contact-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.cta-item {
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: 15px;
    text-align: center;
}

.cta-item h4 {
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

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

.social-link:hover {
    background: var(--primary-orange);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: url('../images/impact-background.png') center/cover;
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-md);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

.footer .container {
    position: relative;
    z-index: 2;
}

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

.footer-section h3,
.footer-section h4 {
    color: var(--primary-orange);
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-orange);
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    opacity: 0.8;
}

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

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

.footer-legal a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.6;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.footer-legal a:hover {
    opacity: 1;
}

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

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        width: 100%;
        text-align: center;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title-main {
        font-size: 2.5rem;
    }
    
    .hero-title-sub {
        font-size: 1.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .about-content,
    .zana-hero,
    .sovereignty-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .specs-grid,
    .usecases-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-cta {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .hero-title-main {
        font-size: 2rem;
    }
    
    .hero-title-sub {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .btn-large {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 1rem;
    }
}