/**
 * Site Personnel - Franck Mambou
 * Feuille de Styles (styles.css)
 * Version: 2.0
 */

/* ============================================
   VARIABLES ET RÉINITIALISATION
   ============================================ */

:root {
    /* Couleurs */
    --primary: #1F2937;
    --primary-light: #374151;
    --accent: #3B82F6;
    --accent-dark: #2563EB;
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    --background: #F9FAFB;
    --background-light: #FFFFFF;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --border: #E5E7EB;
    
    /* Couleurs des services */
    --color-blue: #3B82F6;
    --color-red: #EF4444;
    --color-green: #10B981;
    --color-purple: #8B5CF6;
    --color-yellow: #F59E0B;
    --color-indigo: #6366F1;
    
    /* Typographie */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Espacements */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Ombres */
    --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);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    overflow-x: hidden;
}

/* ============================================
   CONTENEUR ET LAYOUT
   ============================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */

.header {
    background-color: var(--primary);
    color: white;
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

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

.logo {
    flex: 1;
}

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.5px;
}

.logo-subtitle {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.nav {
    display: none;
    gap: var(--spacing-xl);
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-base);
}

.nav-link:hover {
    color: var(--accent);
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: white;
    transition: all var(--transition-base);
    border-radius: var(--radius-full);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

@media (min-width: 768px) {
    .nav {
        display: flex;
    }
    
    .menu-toggle {
        display: none;
    }
}

/* ============================================
   NAVIGATION MOBILE
   ============================================ */

.mobile-nav {
    display: none;
    flex-direction: column;
    background-color: var(--primary-light);
    padding: var(--spacing-md);
    gap: var(--spacing-md);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 99;
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-base);
}

.mobile-nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
    .mobile-nav {
        display: none !important;
    }
}

/* ============================================
   SECTION HERO
   ============================================ */

.hero {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    padding: var(--spacing-3xl) var(--spacing-md);
}

.hero-background {
    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"><defs><pattern id="dots" x="0" y="0" width="40" height="40" patternUnits="userSpaceOnUse"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="1200" height="600" fill="url(%23dots)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.hero-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
    line-height: 1.8;
}

.cta-button {
    display: inline-block;
    background-color: white;
    color: var(--accent);
    padding: var(--spacing-md) var(--spacing-2xl);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    border: none;
    font-size: var(--font-size-base);
}

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

@media (min-width: 768px) {
    .hero {
        min-height: 600px;
        padding: var(--spacing-3xl) var(--spacing-lg);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
}

/* ============================================
   SECTION À PROPOS
   ============================================ */

.about {
    padding: var(--spacing-3xl) var(--spacing-md);
    background-color: var(--background-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-lg);
    color: var(--primary);
}

.about-text p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    background-color: var(--background);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent);
}

.stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: center;
}

.about-image {
    display: flex;
    justify-content: center;
}

.about-image-placeholder {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 100px;
    box-shadow: var(--shadow-lg);
}

@media (min-width: 768px) {
    .about {
        padding: var(--spacing-3xl) var(--spacing-lg);
    }
    
    .about-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .about-text h2 {
        font-size: var(--font-size-4xl);
    }
}

/* ============================================
   SECTION SERVICES
   ============================================ */

.services {
    padding: var(--spacing-3xl) var(--spacing-md);
    background-color: var(--background);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.service-card {
    background-color: var(--background-light);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border-top: 4px solid var(--accent);
    cursor: pointer;
}

.service-card[data-color="blue"] {
    border-top-color: var(--color-blue);
}

.service-card[data-color="red"] {
    border-top-color: var(--color-red);
}

.service-card[data-color="green"] {
    border-top-color: var(--color-green);
}

.service-card[data-color="purple"] {
    border-top-color: var(--color-purple);
}

.service-card[data-color="yellow"] {
    border-top-color: var(--color-yellow);
}

.service-card[data-color="indigo"] {
    border-top-color: var(--color-indigo);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

.service-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.service-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-base);
    display: inline-block;
}

.service-link:hover {
    color: var(--accent-dark);
}

@media (min-width: 768px) {
    .services {
        padding: var(--spacing-3xl) var(--spacing-lg);
    }
    
    .section-title {
        font-size: var(--font-size-4xl);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   SECTION CONTACT
   ============================================ */

.contact {
    padding: var(--spacing-3xl) var(--spacing-md);
    background-color: var(--background-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
}

.contact-info h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-lg);
    color: var(--primary);
}

.contact-info p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

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

.contact-method {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--background);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent);
}

.contact-icon {
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.contact-method h4 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
}

.contact-method a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition-base);
}

.contact-method a:hover {
    color: var(--accent-dark);
}

.contact-method p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

/* ============================================
   FORMULAIRE DE CONTACT
   ============================================ */

.contact-form {
    background-color: var(--background);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group small {
    display: block;
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.form-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

.form-message.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border-left: 4px solid var(--success);
}

.form-message.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border-left: 4px solid var(--error);
}

.submit-button {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.submit-button:hover {
    background-color: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.submit-button:active {
    transform: translateY(0);
}

@media (min-width: 768px) {
    .contact {
        padding: var(--spacing-3xl) var(--spacing-lg);
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr 1fr;
    }
    
    .contact-info h2 {
        font-size: var(--font-size-4xl);
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   SECTION RÉSEAUX SOCIAUX
   ============================================ */

.social {
    padding: var(--spacing-3xl) var(--spacing-md);
    background-color: var(--background);
    text-align: center;
}

.social h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-2xl);
    color: var(--primary);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100px;
    padding: var(--spacing-lg);
    background-color: var(--background-light);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--primary);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.social-link span:first-child {
    font-size: var(--font-size-2xl);
}

.social-link .label {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.social-link:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.social-link.facebook:hover {
    background-color: #1877F2;
    color: white;
}

.social-link.instagram:hover {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    color: white;
}

.social-link.youtube:hover {
    background-color: #FF0000;
    color: white;
}

.social-link.email:hover {
    background-color: var(--accent);
    color: white;
}

@media (min-width: 768px) {
    .social {
        padding: var(--spacing-3xl) var(--spacing-lg);
    }
    
    .social h2 {
        font-size: var(--font-size-4xl);
    }
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background-color: var(--primary);
    color: white;
    padding: var(--spacing-3xl) var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-section ul li a:hover {
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}

.footer-bottom p {
    margin: var(--spacing-sm) 0;
}

.heart {
    color: var(--error);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
}

@media (min-width: 768px) {
    .footer {
        padding: var(--spacing-3xl) var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .footer-bottom p {
        margin: 0;
    }
}

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

@media (max-width: 767px) {
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card {
    animation: fadeIn 0.6s ease-out forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }
.service-card:nth-child(5) { animation-delay: 0.5s; }
.service-card:nth-child(6) { animation-delay: 0.6s; }

/* ============================================
   ACCESSIBILITÉ
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible pour l'accessibilité clavier */
*:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Impression */
@media print {
    .header,
    .menu-toggle,
    .mobile-nav,
    .contact-form,
    .social {
        display: none;
    }
}