/* ==========================================================================
   EXPORT.CSS - Design System Premium & Logistique Internationale
   ========================================================================== */

/* --- 1. VARIABLES & DESIGN SYSTEM --- */
:root {
    /* Palette de couleurs */
    --color-bg-dark: #050505;
    --color-bg-navy: #0A1128;
    --color-text-main: #FFFFFF;
    --color-text-muted: #A0AABF;
    --color-accent-cyan: #00E5FF;
    --color-accent-gold: #D4AF37;
    --color-error: #FF3B30;
    --color-success: #34C759;

    /* Effets de verre (Glassmorphism) */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(16px);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);

    /* Typographie */
    /* Utilisation des polices système modernes pour une vitesse de rendu maximale (LCP) */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    
    /* Espacements fluides */
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- 2. RESET & ACCESSIBILITÉ DE BASE --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px; /* Base pour les unités REM */
    scroll-behavior: smooth; /* Navigation fluide */
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-dark);
    background-image: radial-gradient(circle at top right, var(--color-bg-navy) 0%, var(--color-bg-dark) 60%);
    color: var(--color-text-main);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Focus accessible (WCAG 2.2) */
*:focus-visible {
    outline: 2px solid var(--color-accent-cyan);
    outline-offset: 4px;
    border-radius: 4px;
}

/* Désactivation des animations pour l'accessibilité */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Lien d'évitement pour la navigation clavier */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-accent-cyan);
    color: var(--color-bg-dark);
    padding: 8px;
    z-index: 9999;
    font-weight: bold;
    text-decoration: none;
    transition: top var(--transition-fast);
}
.skip-link:focus {
    top: 0;
}

/* --- 3. TYPOGRAPHIE --- */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem); /* Typographie fluide */
    background: linear-gradient(135deg, #FFFFFF 0%, #A0AABF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p {
    color: var(--color-text-muted);
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
}

a {
    color: var(--color-accent-cyan);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--color-text-main);
}

/* --- 4. COMPOSANTS (DESIGN SYSTEM) --- */

/* Glassmorphism Universel */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}

/* En-tête (Header) */
.glass-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    z-index: 1000;
    background: rgba(5, 5, 5, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    transition: background var(--transition-smooth);
}

.glass-header nav {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--color-text-main);
}
.logo span {
    color: var(--color-accent-cyan);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
}

.nav-links a {
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    padding-bottom: 4px;
}

/* Micro-interaction premium sur les liens */
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--color-accent-cyan);
    transition: width var(--transition-smooth);
}
.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after {
    width: 100%;
}
.nav-links a:hover {
    color: var(--color-text-main);
}

/* Boutons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    background: var(--color-accent-cyan);
    color: var(--color-bg-dark);
    font-weight: 700;
    font-size: 1rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 4px 15px rgba(0, 229, 255, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 229, 255, 0.5);
    color: var(--color-bg-dark); /* Surcharge le hover global des liens */
}

/* --- 5. SUPPORT RTL (MULTILINGUE ARABE) --- */
html[dir="rtl"] .nav-links {
    /* Inversion des marges/directions pour les langues de droite à gauche */
    flex-direction: row-reverse;
}
html[dir="rtl"] .skip-link {
    left: auto;
    right: 0;
}

/* --- 6. RESPONSIVE DESIGN (MOBILE FIRST APPROACH) --- */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Nous ferons un menu burger en JS plus tard */
    }
    
    h1 {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .glass-header nav {
        padding: 0 var(--space-md);
    }
}

/* --- 7. HERO SECTION (ACCUEIL) --- */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px var(--space-md) 60px;
    overflow: hidden;
}

/* Arrière-plan animé ultra léger (GPU optimisé) */
.hero-bg-animation {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.glow-sphere {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.15) 0%, rgba(10, 17, 40, 0) 70%);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    animation: pulseGlow 8s ease-in-out infinite alternate;
}

.grid-lines {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    transform: perspective(500px) rotateX(60deg) translateY(-100px) translateZ(-200px);
    animation: moveGrid 20s linear infinite;
}

@keyframes pulseGlow {
    0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.5; }
    100% { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
}

@keyframes moveGrid {
    0% { background-position: 0 0; }
    100% { background-position: 0 50px; }
}

/* Contenu de la Hero Section */
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1000px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 229, 255, 0.1);
    color: var(--color-accent-cyan);
    border: 1px solid rgba(0, 229, 255, 0.3);
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    animation: fadeInUp 0.8s ease-out forwards;
}

.hero-content h1 span {
    color: var(--color-accent-cyan);
}

.hero-content p {
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.25rem;
}

/* Bouton Secondaire Premium */
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    background: transparent;
    color: var(--color-text-main);
    font-weight: 700;
    font-size: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-text-main);
}

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

/* Statistiques */
.hero-stats {
    display: flex;
    gap: var(--space-xl);
    padding: 1.5rem 3rem;
    margin-top: var(--space-xl);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text-main);
    background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
}

/* Animations d'entrée (Performance : GPU seulement) */
.hero-content > * {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease-out forwards;
}
.hero-content h1 { animation-delay: 0.1s; }
.hero-content p { animation-delay: 0.2s; }
.hero-actions { animation-delay: 0.3s; }
.hero-stats { animation-delay: 0.5s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
        padding: 1.5rem;
        width: 100%;
    }
    .stat-number {
        font-size: 2rem;
    }
}

/* --- 8. CHATBOT IA GROQ --- */

/* Bouton flottant (Trigger) */
.chatbot-trigger {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-navy) 100%);
    border: 1px solid var(--color-accent-cyan);
    color: var(--color-accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 9999;
    box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow var(--transition-fast);
}

.chatbot-trigger:hover {
    box-shadow: 0 6px 25px rgba(0, 229, 255, 0.6);
    color: var(--color-text-main);
}

/* Conteneur principal du Chat (fermé par défaut) */
.chatbot-container {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 350px;
    height: 500px;
    max-height: 80vh;
    background: rgba(5, 5, 5, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    z-index: 10000;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
    
    /* Animation d'ouverture */
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.chatbot-container.active {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

/* En-tête du Chatbot */
.chatbot-header {
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 20px 20px 0 0;
}

.chatbot-title {
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-success);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-success);
    animation: pulseGlow 2s infinite alternate;
}

.chatbot-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}
.chatbot-close:hover { color: var(--color-error); }

/* Zone des messages */
.chatbot-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
    /* Personnalisation de la scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent-cyan) transparent;
}
.chatbot-messages::-webkit-scrollbar { width: 6px; }
.chatbot-messages::-webkit-scrollbar-thumb { background: var(--color-accent-cyan); border-radius: 10px; }

/* Bulles de messages */
.message {
    max-width: 85%;
    padding: 12px 16px;
    font-size: 0.9rem;
    line-height: 1.4;
    border-radius: 15px;
    animation: fadeInUp 0.3s ease-out forwards;
}

.ai-message {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-main);
    border-bottom-left-radius: 4px;
}

.user-message {
    align-self: flex-end;
    background: linear-gradient(135deg, var(--color-accent-cyan) 0%, #00B0FF 100%);
    color: var(--color-bg-dark);
    font-weight: 500;
    border-bottom-right-radius: 4px;
}

/* Zone de saisie */
.chatbot-input-area {
    padding: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    gap: 10px;
}

#chatbot-input {
    flex: 1;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 10px 15px;
    color: var(--color-text-main);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    transition: border-color var(--transition-fast);
}
#chatbot-input:focus {
    outline: none;
    border-color: var(--color-accent-cyan);
}

.chatbot-send-btn {
    background: transparent;
    border: none;
    color: var(--color-accent-cyan);
    font-size: 1.2rem;
    cursor: pointer;
    transition: transform var(--transition-fast);
}
.chatbot-send-btn:hover {
    transform: scale(1.1) translateX(2px);
}

/* Responsive mobile */
@media (max-width: 480px) {
    .chatbot-container {
        bottom: 0;
        right: 0;
        width: 100%;
        height: 100%;
        max-height: 100vh;
        border-radius: 0;
    }
    .chatbot-header { border-radius: 0; }
}

/* --- 9. MENU MOBILE (BURGER) --- */
.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.burger-btn {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001; /* Toujours au-dessus du menu mobile */
}

.burger-line {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-main);
    transition: all 0.3s linear;
    border-radius: 10px;
    transform-origin: 1px;
}

/* Menu Mobile Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(5, 5, 5, 0.95);
    z-index: 999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateX(100%); /* Caché à droite par défaut */
    transition: transform 0.4s ease-in-out;
}

.mobile-menu-overlay.open {
    transform: translateX(0); /* Glisse sur l'écran */
}

.mobile-nav-links {
    list-style: none;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.mobile-nav-links a {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-main);
    text-transform: uppercase;
}

/* Animation de la croix du Burger */
.burger-btn.toggle .burger-line:nth-child(1) { transform: rotate(45deg); }
.burger-btn.toggle .burger-line:nth-child(2) { opacity: 0; }
.burger-btn.toggle .burger-line:nth-child(3) { transform: rotate(-45deg); }

/* Activation sur mobile */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .burger-btn { display: flex; }
}

/* --- 10. PAGE CONTACT --- */
.contact-section {
    padding: 120px var(--space-md) 60px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.contact-container {
    display: flex;
    max-width: 1200px;
    width: 100%;
    border-radius: 24px;
    overflow: hidden;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out forwards; /* Animation d'entrée */
}

.contact-info {
    flex: 1;
    min-width: 300px;
    padding: var(--space-xl);
    background: rgba(0, 229, 255, 0.05);
    border-right: 1px solid var(--glass-border);
}

.contact-info h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
    color: var(--color-text-main);
}

.contact-details {
    list-style: none;
    margin-top: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

.contact-form-wrapper {
    flex: 1.5;
    min-width: 300px;
    padding: var(--space-xl);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

/* Style des champs de saisie */
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--color-text-main);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent-cyan);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
}

.form-group select option {
    background: var(--color-bg-dark);
    color: var(--color-text-main);
}

@media (max-width: 768px) {
    .contact-container { flex-direction: column; }
    .contact-info { border-right: none; border-bottom: 1px solid var(--glass-border); padding: var(--space-lg); }
    .contact-form-wrapper { padding: var(--space-lg); }
}

/* --- 11. PAGE SERVICES --- */
.services-section {
    padding: 150px var(--space-md) 80px;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.services-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    animation: fadeInUp 0.8s ease-out forwards;
}

.services-header h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-top: var(--space-sm);
}

.services-header h2 span {
    color: var(--color-accent-cyan);
}

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

.service-card {
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

/* On décale l'animation de chaque carte pour un effet d'apparition en cascade */
.service-card:nth-child(1) { animation-delay: 0.2s; }
.service-card:nth-child(2) { animation-delay: 0.3s; }
.service-card:nth-child(3) { animation-delay: 0.4s; }
.service-card:nth-child(4) { animation-delay: 0.5s; }

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 229, 255, 0.15);
    border-color: rgba(0, 229, 255, 0.4);
}

.service-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: rgba(0, 229, 255, 0.1);
    color: var(--color-accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.service-card:hover .service-icon {
    background: var(--color-accent-cyan);
    color: var(--color-bg-dark);
}

.service-card h3 {
    font-size: 1.4rem;
    color: var(--color-text-main);
    margin-bottom: var(--space-sm);
}

.service-card p {
    font-size: 1rem;
    color: var(--color-text-muted);
    flex-grow: 1; /* Pousse le lien en bas si le texte est court */
    margin-bottom: var(--space-lg);
}

.service-link {
    font-weight: 700;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.service-link span {
    transition: transform var(--transition-fast);
}

.service-card:hover .service-link span {
    transform: translateX(5px); /* La flèche avance au survol */
}