/* ========================================
   HIBA - High International Business Activities
   Style Principal - Design Moderne 2025
   Palette : Tons Naturels / Sable
======================================== */

/* Variables CSS */
:root {
    /* Couleurs principales */
    --sable-clair: #F5F0E8;
    --sable-dore: #D4C4A8;
    --terre-brun: #8B7355;
    --olive-fonce: #4A5240;
    --blanc-casse: #FDFCFA;
    --noir-doux: #2D2D2D;

    /* Couleurs utilitaires */
    --overlay: rgba(45, 45, 45, 0.6);
    --shadow-light: rgba(139, 115, 85, 0.1);
    --shadow-medium: rgba(139, 115, 85, 0.2);

    /* Typographie */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Espacements */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Bordures */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 50%;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--noir-doux);
    background-color: var(--blanc-casse);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

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

/* Boutons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background-color: var(--olive-fonce);
    color: var(--blanc-casse);
}

.btn-primary:hover {
    background-color: var(--terre-brun);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--shadow-medium);
}

/* ========================================
   HEADER
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    background-color: transparent;
    transition: all var(--transition-normal);
}

.header.scrolled {
    background-color: var(--blanc-casse);
    box-shadow: 0 2px 20px var(--shadow-light);
    padding: 0.75rem 0;
}

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

.logo img {
    height: 50px;
    width: auto;
    transition: all var(--transition-normal);
    filter: brightness(0) invert(1); /* Logo blanc sur hero */
}

.header.scrolled .logo img {
    height: 40px;
    filter: none; /* Logo normal quand scrollé */
}

/* Navigation */
.nav-list {
    display: flex;
    gap: var(--space-md);
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--blanc-casse);
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-fast);
}

.header.scrolled .nav-link {
    color: var(--noir-doux);
}

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

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

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

/* Language Dropdown */
.lang-dropdown {
    position: relative;
}

.lang-switch {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--blanc-casse);
    border-radius: var(--radius-sm);
    color: var(--blanc-casse);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.header.scrolled .lang-switch {
    border-color: var(--olive-fonce);
    color: var(--olive-fonce);
}

.lang-switch:hover {
    background-color: var(--olive-fonce);
    border-color: var(--olive-fonce);
    color: var(--blanc-casse);
}

.lang-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--blanc-casse);
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 20px var(--shadow-medium);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 100;
    overflow: hidden;
}

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

.lang-menu a {
    display: block;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--noir-doux);
    transition: background var(--transition-fast);
}

.lang-menu a:hover {
    background-color: var(--sable-clair);
}

/* Menu Toggle (Mobile) */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--blanc-casse);
    transition: all var(--transition-fast);
}

.header.scrolled .menu-toggle span {
    background-color: var(--noir-doux);
}

/* ========================================
   HERO SECTION
======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--blanc-casse);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--olive-fonce) 0%, var(--terre-brun) 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.03"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    max-width: 800px;
    padding: var(--space-md);
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    opacity: 0.9;
    margin-bottom: var(--space-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.7;
}

.scroll-indicator {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--blanc-casse), transparent);
    animation: scrollPulse 2s infinite;
}

/* ========================================
   SECTIONS COMMUNES
======================================== */
.section {
    padding: var(--space-xl) 0;
}

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

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--terre-brun);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    color: var(--noir-doux);
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--terre-brun);
}

/* ========================================
   ABOUT SECTION
======================================== */
.about {
    background-color: var(--sable-clair);
}

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

.about-text p {
    margin-bottom: var(--space-sm);
    color: var(--noir-doux);
}

.about-text .lead {
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--terre-brun);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.stat-item {
    text-align: center;
    padding: var(--space-md);
    background: var(--blanc-casse);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px var(--shadow-light);
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--olive-fonce);
    line-height: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--terre-brun);
    margin-top: 0.5rem;
    display: block;
}

/* ========================================
   SERVICES SECTION
======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.service-card {
    padding: var(--space-lg) var(--space-md);
    background: var(--blanc-casse);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--sable-dore);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--shadow-medium);
    border-color: transparent;
}

.service-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--sable-clair), var(--sable-dore));
    border-radius: var(--radius-full);
    color: var(--olive-fonce);
}

.service-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--noir-doux);
    margin-bottom: var(--space-sm);
}

.service-desc {
    font-size: 0.95rem;
    color: var(--terre-brun);
    line-height: 1.7;
}

/* ========================================
   PRODUCTS SECTION
======================================== */
.products {
    background-color: var(--sable-clair);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.products-grid-3 {
    max-width: 1000px;
    margin: 0 auto;
}

.product-card {
    background: var(--blanc-casse);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px var(--shadow-medium);
}

.product-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

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

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

.placeholder-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--sable-dore) 0%, var(--terre-brun) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blanc-casse);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.placeholder-image::after {
    content: attr(data-label);
}

.product-info {
    padding: var(--space-md);
}

.product-info h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--noir-doux);
    margin-bottom: 0.5rem;
}

.product-info p {
    font-size: 0.9rem;
    color: var(--terre-brun);
}

/* ========================================
   WHY US SECTION
======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.feature-item {
    text-align: center;
    padding: var(--space-md);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-sm);
    background-color: var(--sable-clair);
    border-radius: var(--radius-full);
    color: var(--olive-fonce);
    transition: all var(--transition-normal);
}

.feature-item:hover .feature-icon {
    background-color: var(--olive-fonce);
    color: var(--blanc-casse);
    transform: scale(1.1);
}

.feature-item h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--noir-doux);
    margin-bottom: 0.5rem;
}

.feature-item p {
    font-size: 0.9rem;
    color: var(--terre-brun);
    line-height: 1.6;
}

/* ========================================
   CONTACT SECTION
======================================== */
.contact {
    background-color: var(--sable-clair);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.contact-content-centered {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
}

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

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

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--blanc-casse);
    border-radius: var(--radius-full);
    color: var(--olive-fonce);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--noir-doux);
    margin-bottom: 0.25rem;
}

.contact-item p,
.contact-item a {
    font-size: 0.95rem;
    color: var(--terre-brun);
}

.contact-item a:hover {
    color: var(--olive-fonce);
}

/* Contact Form */
.contact-form {
    background: var(--blanc-casse);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px var(--shadow-light);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--noir-doux);
    background-color: var(--sable-clair);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--olive-fonce);
    background-color: var(--blanc-casse);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--terre-brun);
}

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

.contact-form .btn {
    width: 100%;
    margin-top: var(--space-sm);
}

/* ========================================
   FOOTER
======================================== */
.footer {
    background-color: var(--noir-doux);
    color: var(--blanc-casse);
    padding: var(--space-lg) 0 var(--space-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    height: 40px;
    margin-bottom: var(--space-sm);
    filter: brightness(0) invert(1);
}

.footer-brand p {
    font-size: 0.9rem;
    opacity: 0.7;
    line-height: 1.7;
}

.footer-links h4,
.footer-social h4 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    font-size: 0.9rem;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

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

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--blanc-casse);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--olive-fonce);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: var(--space-md);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    opacity: 0.6;
}

/* ========================================
   WHATSAPP BUTTON
======================================== */
.whatsapp-btn {
    position: fixed;
    bottom: var(--space-md);
    right: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: var(--radius-full);
    color: white;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all var(--transition-normal);
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

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

@keyframes scrollPulse {
    0%, 100% {
        opacity: 0.7;
        transform: scaleY(1);
    }
    50% {
        opacity: 0.3;
        transform: scaleY(0.6);
    }
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */

/* Tablet */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .products-grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--blanc-casse);
        padding: var(--space-xl) var(--space-md);
        transition: right var(--transition-normal);
        box-shadow: -10px 0 30px var(--shadow-medium);
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .nav-link {
        color: var(--noir-doux);
        font-size: 1.1rem;
        padding: var(--space-sm) 0;
    }

    .menu-toggle {
        display: flex;
    }

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

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

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

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

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .services-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

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

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

    .social-links {
        justify-content: center;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --space-lg: 3rem;
        --space-xl: 4rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .stat-item {
        display: flex;
        align-items: center;
        gap: var(--space-sm);
        text-align: left;
    }

    .stat-number {
        font-size: 2rem;
    }
}