/* ===== VARIABLES GLOBALES MODERNES ===== */
:root {
    /* Couleurs principales */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #06b6d4;
    --accent: #f59e0b;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Couleurs de fond */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    /* Couleurs de texte */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-light: #94a3b8;
    
    /* Couleurs de bordure */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-dark: #94a3b8;
    
    /* Échelle de gris */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Effets visuels */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Design system */
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index system */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ===== MODE SOMBRE ===== */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #e2e8f0;
    --text-tertiary: #cbd5e1;
    --text-light: #94a3b8;
    --border-light: #334155;
    --border-medium: #475569;
    --border-dark: #64748b;
    --gray-50: #1e293b;
    --gray-100: #334155;
    --gray-200: #475569;
}

/* ===== RESET ET BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    font-weight: 400;
    transition: var(--transition-slow);
    overflow-x: hidden;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHIE ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.025em;
}

h1 { 
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
}

h2 { 
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.2;
}

h3 { 
    font-size: clamp(1.5rem, 3vw, 1.875rem);
    line-height: 1.3;
}

h4 { 
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    line-height: 1.4;
}

h5 { 
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    line-height: 1.5;
}

h6 { 
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    line-height: 1.6;
}

p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.7;
    font-size: clamp(0.875rem, 2vw, 1rem);
}

.lead {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.6;
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradient-shift 3s ease infinite;
}

/* ===== LAYOUT ET STRUCTURE ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(1rem, 3vw, 1.5rem);
}

.section {
    padding: clamp(3rem, 8vw, 6rem) 0;
}

.section-white { background: var(--bg-primary); }
.section-gray { background: var(--bg-secondary); }
.section-dark { 
    background: var(--gray-900);
    color: white;
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4,
.section-dark h5,
.section-dark h6 { color: white; }

.section-dark p { color: var(--text-light); }

/* Grilles responsives */
.grid { display: grid; gap: clamp(1rem, 3vw, 2rem); }
.grid-cols-1 { grid-template-columns: 1fr; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Utilitaires d'espacement */
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.p-4 { padding: 1rem; }
.p-8 { padding: 2rem; }
.mb-16 { margin-bottom: 4rem; }
.mb-20 { margin-bottom: 5rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.py-28 { padding-top: 7rem; padding-bottom: 7rem; }

/* Alignement */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ===== COMPOSANTS COMMUNS ===== */
.card, .service-card, .stat-card, .cert-card, .tech-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius-lg);
    padding: clamp(1.5rem, 3vw, 2.5rem);
    box-shadow: var(--shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
    position: relative;
    overflow: hidden;
}

.card::before, .service-card::before, .cert-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.card:hover::before, .service-card:hover::before, .cert-card:hover::before {
    transform: scaleX(1);
}

.card:hover, .service-card:hover, .cert-card:hover, .tech-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

/* Icônes */
.service-icon, .cert-icon, .contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: clamp(3.5rem, 6vw, 5rem);
    height: clamp(3.5rem, 6vw, 5rem);
    border-radius: var(--border-radius-lg);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: clamp(1rem, 2vw, 1.5rem);
    transition: var(--transition);
}

.service-card:hover .service-icon,
.cert-card:hover .cert-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Boutons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: clamp(0.875rem, 2vw, 1rem) clamp(1.75rem, 3vw, 2.5rem);
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: clamp(0.875rem, 2vw, 1rem);
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    min-height: 52px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before { left: 100%; }

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.btn-outline {
    background: transparent;
    border-color: var(--border-medium);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--text-primary);
    border: 2px solid var(--border-light);
}

.btn-secondary:hover {
    background: var(--gray-200);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

/* Tags */
.tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 1.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

/* ===== NAVIGATION ===== */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-light);
    z-index: var(--z-sticky);
    padding: 1rem 0;
    transition: var(--transition);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.95);
    border-bottom-color: var(--border-light);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(1rem, 3vw, 1.5rem);
    min-height: 70px;
}

/* Logo Netspark */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    padding: 0.5rem 0;
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.logo-image {
    height: clamp(3.5rem, 9vw, 5rem);
    width: auto;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    filter: 
        drop-shadow(0 2px 4px rgba(0, 0, 0, 0.15))
        brightness(1.05)
        contrast(1.1);
    object-fit: contain;
    loading: eager;
    fetchpriority: high;
}

.navbar .logo:hover .logo-image {
    transform: scale(1.08);
    filter: 
        drop-shadow(0 6px 12px rgba(0, 0, 0, 0.2))
        brightness(1.1)
        contrast(1.15);
}

[data-theme="dark"] .logo-image {
    filter: 
        drop-shadow(0 2px 6px rgba(0, 0, 0, 0.4))
        brightness(1.08)
        contrast(1.05);
}

/* Navigation desktop */
.nav-links {
    display: flex;
    gap: clamp(1.5rem, 3vw, 2rem);
    list-style: none;
    align-items: center;
}

.nav-link {
    position: relative;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 1rem 0.75rem;
    font-size: clamp(0.875rem, 2vw, 1rem);
    white-space: nowrap;
    border-radius: var(--border-radius);
}

.nav-link:hover {
    color: var(--primary);
    background: var(--gray-50);
}

.nav-link.active {
    color: var(--primary);
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: white;
}

.nav-controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

#theme-toggle, .mobile-menu-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: clamp(1rem, 3vw, 1.25rem);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
}

#theme-toggle:hover, .mobile-menu-btn:hover {
    background: var(--gray-100);
    color: var(--primary);
    transform: scale(1.05);
}

/* Menu mobile */
.mobile-menu-btn { display: none; }

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--bg-primary);
    z-index: var(--z-modal);
    padding: 5rem 1.5rem 2rem;
    transform: translateX(-100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
}

.mobile-menu.active { transform: translateX(0); }

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    background: var(--bg-primary);
    z-index: 1;
    min-height: 70px;
}

.mobile-menu-header .logo-image {
    height: clamp(3rem, 7vw, 4rem);
}

.mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-nav-link {
    display: block;
    padding: 1rem 1.25rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 2px solid transparent;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: var(--primary);
    color: white;
    transform: translateX(8px);
    border-color: var(--primary-light);
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.mobile-menu-close:hover {
    background: var(--gray-100);
    color: var(--primary);
}

/* ===== HERO SECTION UNIFIÉE ===== */
.hero {
    background: var(--bg-primary);
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
    padding: clamp(4rem, 10vw, 8rem) 0;
    display: flex;
    align-items: center;
    min-height: 80vh;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
    animation: float 6s ease-in-out infinite;
}

[data-theme="dark"] .hero::before {
    background: 
        radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: clamp(0.5rem, 2vw, 0.75rem) clamp(1.25rem, 3vw, 2rem);
    border-radius: 2rem;
    font-size: clamp(0.75rem, 2vw, 0.875rem);
    font-weight: 600;
    margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
    border: 1px solid var(--border-light);
    backdrop-filter: blur(10px);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    animation: slideInDown 0.6s ease-out;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 600;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: clamp(1rem, 3vw, 1.5rem);
    animation: slideInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--text-secondary);
    margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
    line-height: 1.4;
}

/* Typewriter */
.typewriter-container {
    min-height: clamp(2em, 5vw, 3em);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: clamp(1rem, 2vw, 1.5rem);
}

#typewriter {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 600;
    color: var(--text-secondary);
    display: inline-block;
    white-space: nowrap;
    overflow: hidden;
    border-right: 3px solid var(--primary);
    animation: blink-caret 0.75s step-end infinite;
    padding-right: 4px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: clamp(2rem, 5vw, 4rem);
}

/* ===== STATISTIQUES HERO ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: clamp(1rem, 3vw, 2rem);
    margin-top: clamp(2rem, 5vw, 4rem);
    padding: clamp(1.5rem, 4vw, 3rem);
    background: var(--bg-secondary);
    backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-light);
    animation: fadeIn 1s ease-out 0.6s both;
}

.stats-grid .stat-item {
    text-align: center;
    padding: clamp(1rem, 3vw, 1.5rem) clamp(0.5rem, 2vw, 1rem);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stats-grid .stat-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.stats-grid .stat-number {
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.5rem;
    display: block;
}

.stats-grid .stat-label {
    font-size: clamp(0.7rem, 1.5vw, 0.875rem);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ===== PORTFOLIO ===== */
.filter-btn-category {
    display: inline-flex;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-light);
    border-radius: var(--border-radius-lg);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.filter-btn-category:hover {
    border-color: var(--primary-light);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.filter-btn-category.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* Grille portfolio */
.portfolio-grid { gap: 2.5rem; }

.portfolio-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.4s ease;
    z-index: 2;
}

.portfolio-item:hover::before { transform: scaleX(1); }

.portfolio-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.portfolio-image-wrapper {
    position: relative;
    overflow: hidden;
    height: 280px;
}

.portfolio-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-item:hover .portfolio-image { transform: scale(1.08); }

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.9), rgba(6, 182, 212, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-item:hover .portfolio-overlay { opacity: 1; }

.portfolio-content { padding: 2rem; }

.portfolio-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.portfolio-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

/* ===== COMPÉTENCES ===== */
.skill-bar-container { margin-bottom: clamp(1rem, 2vw, 1.5rem); }

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: clamp(0.875rem, 2vw, 1rem);
}

.skill-bar {
    background: var(--gray-200);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    height: 100%;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 4px;
    position: relative;
}

/* ===== FORMULAIRES ===== */
.contact-form-container {
    max-width: 800px;
    margin: 0 auto;
}

.form-group { margin-bottom: clamp(1.5rem, 3vw, 2rem); }

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: clamp(1.5rem, 3vw, 2rem);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-size: clamp(0.875rem, 2vw, 1rem);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: clamp(1rem, 2vw, 1.25rem) clamp(1rem, 2vw, 1.5rem);
    border: 2px solid var(--border-light);
    border-radius: var(--border-radius-lg);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: clamp(0.875rem, 2vw, 1rem);
    font-family: inherit;
    resize: vertical;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--bg-primary);
    transform: translateY(-2px);
}

.form-textarea { min-height: 140px; line-height: 1.6; }

.form-checkbox-container {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    margin: 2rem 0;
}

.form-checkbox-container:hover {
    border-color: var(--primary-light);
    background: var(--bg-primary);
}

.form-checkbox {
    width: 20px;
    height: 20px;
    margin-top: 0.25rem;
    accent-color: var(--primary);
    flex-shrink: 0;
}

.form-checkbox-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    cursor: pointer;
    user-select: none;
}

.form-submit-btn {
    width: 100%;
    padding: clamp(1.25rem, 3vw, 1.5rem) 2rem;
    font-size: clamp(1rem, 2vw, 1.125rem);
    margin-top: 1rem;
}

/* ===== MODALS ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius-xl);
    padding: 2.5rem;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-light);
    transform: scale(0.9) translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.modal:not(.hidden) .modal-content { transform: scale(1) translateY(0); }

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    gap: 1rem;
}

.modal-header h2 { margin-bottom: 0; flex: 1; }

.close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
}

.close-modal:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.modal-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.modal-actions .btn {
    flex: 1;
    min-width: 140px;
}

/* ===== MESSAGES FLASH ===== */
.flash-messages {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: var(--z-tooltip);
    max-width: 400px;
    width: 90%;
}

.flash-message {
    padding: 1.25rem 1.5rem;
    border-radius: var(--border-radius-lg);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-xl);
    animation: slideInRight 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 4px solid;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.flash-success {
    background: linear-gradient(135deg, var(--success), #0d936d);
    color: white;
    border-left-color: #0c8f6a;
}

.flash-error {
    background: linear-gradient(135deg, var(--error), #dc2626);
    color: white;
    border-left-color: #dc2626;
}

.flash-warning {
    background: linear-gradient(135deg, var(--warning), #d97706);
    color: white;
    border-left-color: #d97706;
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    margin-left: 1rem;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: var(--text-light);
    padding: clamp(3rem, 6vw, 5rem) 0 clamp(1.5rem, 3vw, 2rem);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: clamp(1.5rem, 4vw, 3rem);
    margin-bottom: clamp(2rem, 4vw, 3rem);
}

.footer-logo-section { flex: 1; }

.footer-logo {
    font-family: 'Inter', sans-serif;
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    gap: clamp(0.75rem, 2vw, 1.5rem);
}

.footer-link {
    color: var(--text-light);
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.1);
}

.footer-link:hover {
    color: var(--primary-light);
    transform: translateY(-3px) scale(1.1);
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.footer-bottom {
    text-align: center;
    padding-top: clamp(1.5rem, 3vw, 2rem);
    border-top: 1px solid var(--gray-700);
    color: var(--text-light);
    font-size: clamp(0.875rem, 1.5vw, 1rem);
}

.text-gray-light { color: var(--text-light); }
.mt-2 { margin-top: 0.5rem; }

/* ===== ANIMATIONS ===== */
@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--primary); }
}

@keyframes slideInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(100%); }
    to { opacity: 1; transform: translateX(0); }
}

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

/* Tablettes */
@media (max-width: 1024px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
    
    .logo-image {
        height: clamp(3.2rem, 8vw, 4.5rem);
    }
    
    .nav-container {
        min-height: 65px;
    }
}

/* Mobiles */
@media (max-width: 768px) {
    .mobile-menu-btn { display: flex; }
    .nav-links { display: none; }
    .mobile-menu { display: block; }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1.5rem;
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 { grid-template-columns: 1fr; }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }

    .footer-links { justify-content: center; }
    
    .section { padding: 3rem 0; }
    .hero { padding: 3rem 0; min-height: 70vh; }
    .container { padding: 0 1.25rem; }
    
    .filter-btn-category { padding: 0.875rem 1.5rem; font-size: 0.9rem; }
    .portfolio-grid { gap: 2rem; }
    .portfolio-content { padding: 1.5rem; }
    .cert-card { padding: 2rem 1.5rem; }
    .py-28, .py-24 { padding-top: 4rem; padding-bottom: 4rem; }
    
    .modal-content {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }
    
    .modal-actions { flex-direction: column; }
    .modal-actions .btn { width: 100%; }
    
    .form-checkbox-container {
        padding: 1.25rem;
        margin: 1.5rem 0;
    }
    
    .flash-messages {
        right: 5%;
        left: 5%;
        max-width: none;
    }
    
    .logo-image {
        height: clamp(3rem, 6vw, 4rem);
    }
    
    .mobile-menu-header .logo-image {
        height: clamp(2.8rem, 5vw, 3.5rem);
    }
    
    .nav-container {
        min-height: 60px;
        padding: 0 1.25rem;
    }
    
    .navbar {
        padding: 0.875rem 0;
    }
}

/* Petits mobiles */
@media (max-width: 480px) {
    .container { padding: 0 1rem; }
    .hero { padding: 2.5rem 0; min-height: 60vh; }
    .section { padding: 2.5rem 0; }
    
    .card, .service-card, .stat-card, .cert-card, .tech-card { padding: 1.5rem; }
    .hero-title { font-size: 2rem; }
    .hero-subtitle { font-size: 1.125rem; }
    .btn { min-height: 48px; padding: 0.875rem 1.5rem; }
    
    .filter-btn-category { padding: 0.75rem 1.25rem; font-size: 0.85rem; }
    .portfolio-image-wrapper { height: 220px; }
    .portfolio-content { padding: 1.25rem; }
    .stat-number { font-size: 2.5rem; }
    
    .modal-content { padding: 1.5rem 1.25rem; }
    .form-checkbox-container { padding: 1rem; gap: 0.75rem; }
    .form-input, .form-select, .form-textarea { padding: 1rem 1.25rem; }
    
    .logo-image {
        height: clamp(2.8rem, 5vw, 3.5rem);
    }
    
    .mobile-menu-header .logo-image {
        height: clamp(2.5rem, 4vw, 3rem);
    }
    
    .nav-container {
        min-height: 55px;
    }
}

/* Grands écrans */
@media (min-width: 1440px) {
    .container { max-width: 1400px; }
}

@media (min-width: 2000px) {
    .container { max-width: 1800px; }
}

/* Accessibilité */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    #typewriter {
        animation: none;
        border-right: none;
    }
}

@media (prefers-contrast: high) {
    :root {
        --primary: #0000ff;
        --text-primary: #000000;
        --bg-primary: #ffffff;
    }
}

/* Focus pour accessibilité */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--border-radius);
}

/* Sélection de texte */
::selection {
    background: var(--primary-light);
    color: white;
}

::-moz-selection {
    background: var(--primary-light);
    color: white;
}