/**
 * Agence Web France - Styles Personnalisés
 * Design moderne, responsive et optimisé
 * Mobile-first approach
 */

/* ===========================
   Variables CSS
   =========================== */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --white-color: #ffffff;
    --transition-speed: 0.3s;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    overflow-x: hidden;
}

/* ===========================
   Header Sticky
   =========================== */
.header-sticky {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--transition-speed) ease;
    background-color: var(--white-color);
}

.header-sticky.scrolled {
    box-shadow: var(--box-shadow-lg);
}

.navbar-brand {
    font-size: 1.5rem;
    transition: transform var(--transition-speed) ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    position: relative;
    font-weight: 500;
    transition: color var(--transition-speed) ease;
    padding: 0.5rem 1rem !important;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

/* Effet de soulignement au survol */
.nav-link:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: all var(--transition-speed) ease;
    transform: translateX(-50%);
}

.nav-link:not(.btn):hover::after {
    width: 80%;
}

/* ===========================
   Section Hero
   =========================== */
.hero-section {
    padding-top: 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.hero-image-placeholder {
    background: var(--white-color);
    border-radius: 20px;
    padding: 4rem;
    box-shadow: var(--box-shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    animation: float 3s ease-in-out infinite;
}

/* Animation de flottement */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ===========================
   Boutons CTA
   =========================== */
.cta-button {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-speed) ease;
    border: none;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-lg);
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.cta-button:hover::before {
    width: 300px;
    height: 300px;
}

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

/* ===========================
   Sections
   =========================== */
.section-padding {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===========================
   Cards Services
   =========================== */
.service-card {
    transition: all var(--transition-speed) ease;
    cursor: pointer;
    border-radius: 15px;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-lg) !important;
}

.service-icon {
    transition: all var(--transition-speed) ease;
}

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

.service-card:hover .service-icon i {
    animation: pulse 1s ease infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* ===========================
   Section À Propos
   =========================== */
.about-image-placeholder {
    background: var(--light-color);
    border-radius: 20px;
    padding: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.stat-box {
    background: var(--light-color);
    border-radius: 10px;
    transition: all var(--transition-speed) ease;
}

.stat-box:hover {
    background: var(--white-color);
    box-shadow: var(--box-shadow);
    transform: scale(1.05);
}

/* ===========================
   Portfolio
   =========================== */
.portfolio-card {
    transition: all var(--transition-speed) ease;
    cursor: pointer;
    border-radius: 15px;
    overflow: hidden;
}

.portfolio-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-lg) !important;
}

.portfolio-image {
    overflow: hidden;
    position: relative;
    height: 250px;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    transition: transform var(--transition-speed) ease;
}

.portfolio-card:hover .placeholder-image {
    transform: scale(1.1);
}

.badge {
    font-weight: 500;
    padding: 0.4rem 0.8rem;
}

/* ===========================
   Section CTA
   =========================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0a58ca 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

/* ===========================
   Formulaire de Contact
   =========================== */
.form-control,
.form-select {
    border-radius: 8px;
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    transition: all var(--transition-speed) ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

.contact-info .contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--light-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed) ease;
}

.contact-info > div:hover .contact-icon {
    background-color: var(--primary-color);
    transform: scale(1.1);
}

.contact-info > div:hover .contact-icon i {
    color: var(--white-color) !important;
}

/* ===========================
   Footer
   =========================== */
.footer {
    position: relative;
}

.hover-link {
    transition: all var(--transition-speed) ease;
    position: relative;
}

.hover-link:hover {
    color: var(--white-color) !important;
    padding-left: 5px;
}

/* ===========================
   Bouton Scroll to Top
   =========================== */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white-color);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed) ease;
    z-index: 999;
    box-shadow: var(--box-shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-top-btn.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    background-color: #0a58ca;
    transform: translateY(-5px);
}

/* ===========================
   Animations d'entrée
   =========================== */
.fade-in {
    animation: fadeIn 0.8s ease-in;
}

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

/* ===========================
   Responsive Design - Mobile First
   =========================== */

/* Tablettes (768px et plus) */
@media (min-width: 768px) {
    .section-title {
        font-size: 3rem;
    }
}

/* Desktop (992px et plus) */
@media (min-width: 992px) {
    .nav-link {
        padding: 0.5rem 1rem !important;
    }
}

/* Mobile (max 767px) */
@media (max-width: 767px) {
    .section-padding {
        padding: 3rem 0;
    }

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

    .hero-section {
        padding-top: 100px;
    }

    .hero-image-placeholder {
        padding: 2rem;
        min-height: 250px;
    }

    .display-4 {
        font-size: 2rem !important;
    }

    .lead {
        font-size: 1rem;
    }

    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }

    .navbar-brand {
        font-size: 1.2rem;
    }

    .scroll-top-btn {
        width: 40px;
        height: 40px;
        bottom: 20px;
        right: 20px;
        font-size: 1.2rem;
    }
}

/* Très petits écrans (max 576px) */
@media (max-width: 576px) {
    .section-title {
        font-size: 1.75rem;
    }

    .display-5 {
        font-size: 2rem !important;
    }

    .cta-section .display-5 {
        font-size: 1.75rem !important;
    }
}

/* ===========================
   Utilitaires
   =========================== */
.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0a58ca 100%);
}

.text-shadow {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hover-scale {
    transition: transform var(--transition-speed) ease;
}

.hover-scale:hover {
    transform: scale(1.05);
}

/* ===========================
   Accessibilité
   =========================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus visible pour l'accessibilité au clavier */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ===========================
   Mode sombre (optionnel)
   =========================== */
@media (prefers-color-scheme: dark) {
    /* Désactivé par défaut, peut être activé si souhaité */
}

/* ===========================
   Print styles
   =========================== */
@media print {
    .header-sticky,
    .scroll-top-btn,
    .cta-section,
    footer {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    a {
        text-decoration: underline;
    }
}