/* ============================================
   ORBEO GROUP - STYLES PRINCIPAUX
   Mode clair/sombre + RTL support
   ============================================ */

/* Variables CSS - Thème Clair (défaut) */
:root {
    /* Couleurs principales */
    --primary-blue: #0A2463;
    --primary-blue-light: #1E3A8A;
    --accent-orange: #FB8500;
    --white: #FFFFFF;
    --off-white: #F8F9FA;
    --light-gray: #E5E7EB;
    --gray: #6B7280;
    --dark-gray: #374151;
    --black: #111827;
    
    /* Backgrounds */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #E5E7EB;
    
    /* Text colors */
    --text-primary: #111827;
    --text-secondary: #374151;
    --text-muted: #6B7280;
    
    /* Borders */
    --border-color: #E5E7EB;
    --border-color-hover: #FB8500;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0A2463 0%, #1E3A8A 100%);
    --gradient-orange: linear-gradient(135deg, #FB8500 0%, #FFB347 100%);
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-xxl: 6rem;
    
    /* Typography */
    --font-display: 'DM Serif Display', serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Variables CSS - Thème Sombre */
.dark-mode {
    --primary-blue: #1E3A8A;
    --primary-blue-light: #3B82F6;
    --accent-orange: #FB8500;
    --white: #111827;
    --off-white: #1F2937;
    --light-gray: #374151;
    --gray: #9CA3AF;
    --dark-gray: #D1D5DB;
    --black: #F9FAFB;
    
    --bg-primary: #111827;
    --bg-secondary: #1F2937;
    --bg-tertiary: #374151;
    
    --text-primary: #F9FAFB;
    --text-secondary: #E5E7EB;
    --text-muted: #9CA3AF;
    
    --border-color: #374151;
    --border-color-hover: #FB8500;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

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

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

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

a {
    color: var(--accent-orange);
    text-decoration: none;
    transition: all var(--transition-fast);
}

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

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

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Header & Navigation */
header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all var(--transition-normal);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
}

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

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--primary-blue);
}

.logo-orbeo {
    color: var(--primary-blue);
    font-weight: 700;
}

.logo-group {
    color: var(--accent-orange);
    font-weight: 400;
}

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

.nav-links a {
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--space-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: width var(--transition-normal);
}

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

/* Language Selector */
.language-selector {
    display: flex;
    gap: var(--space-xs);
    margin-left: var(--space-sm);
}

.language-selector button {
    padding: 0.25rem 0.5rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.language-selector button:hover,
.language-selector button.active {
    background: var(--accent-orange);
    border-color: var(--accent-orange);
    color: var(--white);
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    gap: var(--space-xs);
    margin-left: var(--space-sm);
    padding-left: var(--space-sm);
    border-left: 1px solid var(--border-color);
}

.theme-toggle button {
    padding: 0.5rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle button:hover,
.theme-toggle button.active {
    background: var(--accent-orange);
    border-color: var(--accent-orange);
    transform: scale(1.1);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--space-xxl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><path d="M0,300 Q300,200 600,300 T1200,300 L1200,600 L0,600 Z" fill="rgba(255,255,255,0.05)"/></svg>') no-repeat center bottom;
    background-size: cover;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.8s ease;
}

.hero p {
    color: rgba(255,255,255,0.9);
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto var(--space-lg);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s both;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-family: var(--font-body);
    font-size: 1rem;
}

.btn-primary {
    background: var(--accent-orange);
    color: var(--white);
}

.btn-primary:hover {
    background: #E07600;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: 1.125rem;
}

/* Sections */
section {
    padding: var(--space-xxl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-label {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-tertiary);
    color: var(--accent-orange);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.section-title {
    color: var(--primary-blue);
    margin-bottom: var(--space-md);
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.service-card {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: var(--space-lg);
    transition: all var(--transition-normal);
    position: relative;
}

.service-card:hover {
    border-color: var(--accent-orange);
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--gradient-orange);
    color: var(--white);
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.service-card h3 {
    color: var(--primary-blue);
    margin-bottom: var(--space-sm);
}

.service-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

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

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

.feature-item h3 {
    color: var(--primary-blue);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.feature-item p {
    color: var(--text-muted);
}

/* CTA Section */
.cta {
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
    padding: var(--space-xxl) 0;
}

.cta-title {
    color: var(--white);
    margin-bottom: var(--space-md);
}

.cta-text {
    color: rgba(255,255,255,0.9);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: var(--space-xl) auto;
    background: var(--bg-secondary);
    padding: var(--space-xl);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-sm);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-orange);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-xxl) 0 var(--space-lg);
}

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

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.footer-description {
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.footer-title {
    color: var(--primary-blue);
    margin-bottom: var(--space-md);
    font-size: 1.125rem;
}

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

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

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

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

/* RTL Support (Arabic) */
[dir="rtl"] {
    direction: rtl;
    text-align: right;
}

[dir="rtl"] .nav-links {
    flex-direction: row-reverse;
}

[dir="rtl"] .language-selector {
    margin-left: 0;
    margin-right: var(--space-sm);
}

[dir="rtl"] .theme-toggle {
    margin-left: 0;
    margin-right: var(--space-sm);
    padding-left: 0;
    padding-right: var(--space-sm);
    border-left: none;
    border-right: 1px solid var(--border-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--space-md);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .services-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .container,
    .container-wide {
        padding: 0 var(--space-sm);
    }
    
    .btn {
        width: 100%;
    }
}