/*
==============================================
AI.M.EZ - Feuille de Style Principale
==============================================
Charte graphique : Tons sombres professionnels
Couleurs principales : #0f172a, #1e293b, #64748b, #f97316
*/

/* ==============================================
   VARIABLES CSS ET RESET
   ============================================== */
:root {
    /* Couleurs principales */
    --color-primary-dark: #0f172a;
    --color-primary-medium: #1e293b;
    --color-primary-light: #334155;
    --color-accent-blue: #3b82f6;
    --color-accent-orange: #f97316;
    --color-accent-orange-hover: #ea580c;
    
    /* Couleurs de texte */
    --color-text-primary: #e2e8f0;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    
    /* Bordures et séparations */
    --color-border-light: #475569;
    --color-border-medium: #334155;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Rayons de bordure */
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 50%;
    
    /* Ombres */
    --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-medium: 0 10px 25px -3px rgba(0, 0, 0, 0.4);
    
    /* Transitions */
    --transition-fast: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--color-primary-dark);
    color: var(--color-text-primary);
    line-height: 1.6;
}

/* ==============================================
   UTILITAIRES GÉNÉRAUX
   ============================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: var(--spacing-md); }
.mb-5 { margin-bottom: var(--spacing-lg); }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: var(--spacing-md); }
.mt-5 { margin-top: var(--spacing-lg); }

.py-1 { padding: var(--spacing-xs) 0; }
.py-2 { padding: var(--spacing-sm) 0; }
.py-3 { padding: 1.5rem 0; }
.py-4 { padding: var(--spacing-md) 0; }
.py-5 { padding: var(--spacing-lg) 0; }

/* ==============================================
   NAVIGATION
   ============================================== */
.nav {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-medium));
    color: white;
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-border-medium);
    box-shadow: var(--shadow-light);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-accent-blue);
    text-decoration: none;
    transition: var(--transition-fast);
}

.logo:hover {
    color: var(--color-text-primary);
}

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

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--color-accent-blue);
    transition: width 0.3s ease;
}

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

/* ==============================================
   BOUTONS ET CTA
   ============================================== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--color-accent-orange-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background: var(--color-primary-light);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-light);
}

.btn-secondary:hover {
    background: var(--color-border-light);
    border-color: var(--color-accent-blue);
}

.btn-outline {
    background: transparent;
    color: var(--color-accent-blue);
    border: 2px solid var(--color-accent-blue);
}

.btn-outline:hover {
    background: var(--color-accent-blue);
    color: white;
}

.cta-button {
    background: var(--color-accent-orange);
    color: white;
    padding: var(--spacing-xs) 1.5rem;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
}

.cta-button:hover {
    background: var(--color-accent-orange-hover);
    transform: translateY(-1px);
}

/* ==============================================
   HÉROS ET SECTIONS PRINCIPALES
   ============================================== */
.hero {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-medium));
    color: white;
    padding: var(--spacing-xl) 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 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(100,116,139,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

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

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  color: var(--color-accent-blue);
}

.highlight {
  color: var(--color-accent-orange);
  background: linear-gradient(45deg, var(--color-accent-orange), #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent-blue);
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero .btn {
    font-size: 1.1rem;
    padding: 1rem 2rem;
}

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

.section:nth-child(even) {
    background: var(--color-primary-medium);
}

.section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
    font-weight: 600;
}

.section h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-weight: 600;
}

.section p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* ==============================================
   CARTES
   ============================================== */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.card {
    background: var(--color-primary-light);
    color: var(--color-text-primary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-light);
    transition: var(--transition-fast);
    border: 1px solid var(--color-border-light);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-blue));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--color-accent-blue);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card h3 {
    color: var(--color-accent-blue);
    margin-bottom: var(--spacing-sm);
    justify-content: center;
    align-items: center;
}

.card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.card .btn {
    margin-top: var(--spacing-sm);
}

/* ==============================================
   FEATURES ET ICÔNES
   ============================================== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.feature {
    text-align: center;
    padding: var(--spacing-sm);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--color-accent-orange);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
    color: white;
    font-size: 1.5rem;
    transition: var(--transition-fast);
}

.feature-icon:hover {
    background: var(--color-accent-orange-hover);
    transform: scale(1.1);
}

/* ==============================================
   TÉMOIGNAGES
   ============================================== */
.testimonials {
    margin-top: var(--spacing-lg);
}

.testimonial {
    background: var(--color-primary-light);
    color: var(--color-text-primary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-light);
    margin: var(--spacing-sm) 0;
    border: 1px solid var(--color-border-light);
    position: relative;
}

.testimonial::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 20px;
    font-size: 4rem;
    color: var(--color-accent-orange);
    font-family: Georgia, serif;
}

.testimonial blockquote {
    font-style: italic;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    padding-left: 2rem;
}

.testimonial cite {
    font-weight: 600;
    color: var(--color-accent-blue);
    font-style: normal;
}

/* ==============================================
   FORMULAIRES
   ============================================== */
.form-section {
    background: var(--color-primary-light);
    color: var(--color-text-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-light);
    margin-top: var(--spacing-md);
    border: 1px solid var(--color-border-light);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    background: var(--color-primary-medium);
    color: var(--color-text-primary);
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--color-accent-blue);
    outline: none;
    box-shadow: 0 0 0 3px rgba(100, 116, 139, 0.1);
}

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

/* ==============================================
   UTILITAIRES SUPPLÉMENTAIRES
   ============================================== */
.max-w-sm { max-width: 24rem; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: var(--spacing-md); }

.mx-auto { margin-left: auto; margin-right: auto; }

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* ==============================================
   RESPONSIVE DESIGN
   ============================================== */
@media (max-width: 768px) {
    .hero h1 { 
        font-size: 2.5rem; 
    }
    
    .section h2 { 
        font-size: 2rem; 
    }
    
    .nav-links { 
        display: none; 
    }
    
    .nav-content {
        justify-content: space-between;
    }
    
    .cards { 
        grid-template-columns: 1fr; 
    }
    
    .feature-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 15px;
    }

    .flex {
        flex-direction: column;
    }
    
    .flex.gap-4 > * {
        margin-bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--spacing-md) 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .section {
        padding: var(--spacing-md) 0;
    }
}