:root {
    /* Couleurs */
    --primary: #FF6B35;
    --primary-light: #FF9A5A;
    --primary-dark: #D45A2B;
    
    --secondary: #5B86E5;
    --secondary-light: #7DA1F0;
    --secondary-dark: #3A6BD1;
    
    --accent: #4ECDC4;
    --accent-light: #7BDFD8;
    --accent-dark: #2FB8AF;
    
    --white: #FFFFFF;
    --light: #F7F7FF;
    --light-gray: #E2E2E2;
    --gray: #A0A4A8;
    --dark-gray: #6C757D;
    --dark: #292F36;
    --darker: #1A1E23;
    
    /* Typographie */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.6;
    
    /* Espacements */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-xxl: 3rem;
    
    /* Bordures */
    --border-radius-sm: 6px;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    
    /* Ombres */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s ease;
}

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

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

body {
    font-family: var(--font-family);
    line-height: var(--line-height-base);
    color: var(--dark);
    background-color: var(--light);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Typographie */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--space-md);
    color: var(--dark-gray);
}

/* Layout */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    height: 72px;
    display: flex;
    align-items: center;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 800;
    font-size: 1.25rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius-sm);
    backgroungd: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
}

.logo-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-list {
    display: flex;
    gap: var(--space-xs);
}

.nav-item {
    position: relative;
    cursor: pointer;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    color: var(--dark-gray);
    transition: var(--transition-fast);
}

.nav-link i {
    font-size: 1rem;
}

.nav-item.active .nav-link,
.nav-link:hover {
    color: var(--primary);
    background-color: rgba(255, 107, 53, 0.08);
}

/* Dropdown */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 100;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--dark);
    transition: var(--transition-fast);
}

.dropdown-menu a:hover {
    background-color: rgba(0,0,0,0.03);
    color: var(--primary);
}

.dropdown-menu i {
    width: 20px;
    text-align: center;
    color: var(--gray);
}

/* Header actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.search-wrapper {
    position: relative;
    width: 240px;
}

.search-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    padding-right: 40px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--light-gray);
    font-size: 0.9rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
}

.search-button {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
    transition: var(--transition-fast);
}

.search-input:focus + .search-button {
    color: var(--primary);
}

/* User menu */
.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    border: 2px solid var(--primary);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 18px;
    height: 18px;
    background-color: #EF476F;
    color: var(--white);
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Menu mobile */
.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
}

.mobile-navigation {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100vh;
    background-color: var(--white);
    box-shadow: var(--shadow-lg);
    z-index: 1100;
    transition: var(--transition-slow);
    display: flex;
    flex-direction: column;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1099;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-slow);
}

.mobile-navigation.active {
    right: 0;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--light-gray);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.user-profile img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.user-profile h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
}

.user-profile p {
    font-size: 0.85rem;
    color: var(--gray);
    margin-bottom: 0;
}

.close-menu {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark-gray);
    cursor: pointer;
}

.mobile-search {
    padding: var(--space-md);
    border-bottom: 1px solid var(--light-gray);
}

.mobile-search input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--light-gray);
    font-size: 1rem;
}

.mobile-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md) 0;
}

.mobile-nav a {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-lg);
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition-fast);
}

.mobile-nav a:hover,
.mobile-nav a.active {
    background-color: rgba(255, 107, 53, 0.08);
    color: var(--primary);
}

.mobile-nav i {
    width: 24px;
    text-align: center;
}

.mobile-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--light-gray);
}

.mobile-footer a {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    color: var(--dark-gray);
}

.mobile-footer a.logout {
    color: #EF476F;
}

/* Contenu principal */
.app-content {
    padding-top: 72px;
    min-height: 100vh;
}

/* Section Hero */
.hero-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(255,255,255,0.9)), 
                url('https://assets.codepen.io/3364143/pattern.png');
    background-size: cover;
    background-position: center;
}

.hero-section .container {
    display: flex;
    align-items: center;
    gap: var(--space-xxl);
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.hero-image img {
    max-width: 500px;
    width: 100%;
    height: auto;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: var(--space-xl);
    color: var(--dark-gray);
}

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

/* Boutons */
.primary-button,
.secondary-button,
.outline-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    transition: var(--transition);
    gap: var(--space-sm);
}

.primary-button {
    background-color: var(--primary);
    color: var(--white);
}

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

.secondary-button {
    background-color: var(--secondary);
    color: var(--white);
}

.secondary-button:hover {
    background-color: var(--secondary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

/* Section Applications */
.apps-section {
    padding: var(--space-xxl) 0;
    background-color: var(--white);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.view-all {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--primary);
    font-weight: 600;
    transition: var(--transition-fast);
}

.view-all i {
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

.view-all:hover {
    color: var(--primary-dark);
}

.view-all:hover i {
    transform: translateX(var(--space-xs));
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.app-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,0.03);
    transition: var(--transition);
}

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

.app-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--white);
    font-size: 1.5rem;
}

.app-stats {
    display: flex;
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.app-stats span {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.85rem;
    color: var(--dark-gray);
}

.app-stats i {
    color: var(--primary);
}

.app-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--primary);
    font-weight: 600;
    transition: var(--transition-fast);
}

.app-link i {
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

.app-link:hover i {
    transform: translateX(var(--space-xs));
}

/* Section Actualités */
.news-section {
    padding: var(--space-xxl) 0;
    background-color: var(--light);
}

.news-tabs {
    display: flex;
    gap: var(--space-sm);
}

.tab-button {
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--border-radius-sm);
    background-color: transparent;
    border: none;
    color: var(--dark-gray);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.tab-button.active {
    background-color: var(--primary);
    color: var(--white);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.news-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.news-tag {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    color: var(--white);
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 1;
}

.news-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.news-content {
    padding: var(--space-md);
}

.news-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-md);
}

.news-date {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.85rem;
    color: var(--dark-gray);
}

.read-more {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
}

.read-more i {
    font-size: 0.7rem;
    transition: var(--transition-fast);
}

.read-more:hover i {
    transform: translateX(var(--space-xs));
}

/* Section Intégration */
.integration-section {
    padding: var(--space-xxl) 0;
    background: linear-gradient(135deg, var(--secondary-light), var(--secondary-dark));
    color: var(--white);
}

.integration-section .container {
    display: flex;
    align-items: center;
    gap: var(--space-xxl);
}

.integration-content {
    flex: 1;
    max-width: 600px;
}

.integration-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.integration-image img {
    max-width: 500px;
    width: 100%;
    height: auto;
    animation: float 6s ease-in-out infinite;
}

.integration-description {
    margin-bottom: var(--space-xl);
    color: rgba(255,255,255,0.85);
    font-size: 1.1rem;
}

.integration-features {
    margin-bottom: var(--space-xl);
}

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

.integration-features i {
    color: var(--accent);
}

/* Footer */
.app-footer {
    background-color: var(--darker);
    color: var(--white);
    padding: var(--space-xxl) 0 var(--space-lg);
}

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

.footer-brand {
    max-width: 300px;
}

.footer-description {
    margin: var(--space-md) 0;
    color: rgba(255,255,255,0.7);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.1);
    color: var(--white);
    transition: var(--transition-fast);
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.links-column h4 {
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
    color: var(--white);
}

.links-column ul li {
    margin-bottom: var(--space-sm);
}

.links-column a {
    color: rgba(255,255,255,0.7);
    transition: var(--transition-fast);
    font-size: 0.95rem;
}

.links-column a:hover {
    color: var(--white);
    padding-left: var(--space-xs);
}

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

.copyright {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
}

.language-selector {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.language-selector select {
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
}

.language-selector select:focus {
    outline: none;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-section .container,
    .integration-section .container {
        flex-direction: column;
        gap: var(--space-xl);
    }
    
    .hero-content,
    .integration-content {
        text-align: center;
        max-width: 100%;
    }
    
    .hero-actions,
    .integration-features {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-brand {
        max-width: 100%;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .main-navigation,
    .header-actions .search-wrapper {
        display: none;
    }
    
    .mobile-menu-button {
        display: block;
    }
    
    .hero-section {
        padding: var(--space-xl) 0;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .mobile-navigation {
        width: 100%;
    }
    
    .news-tabs {
        flex-wrap: wrap;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .tab-button,
    .primary-button,
    .secondary-button,
    .outline-button {
        width: 100%;
    }
}