/* ========================================
   VARIABLES & DESIGN SYSTEM
======================================== */
:root {
    /* Couleurs principales - Palette claire et professionnelle */
    --color-primary: #2563EB;           /* Bleu principal */
    --color-primary-dark: #1E40AF;      /* Bleu foncé */
    --color-primary-light: #DBEAFE;     /* Bleu très clair */
    --color-secondary: #F59E0B;         /* Orange/Jaune */
    --color-success: #10B981;           /* Vert succès */
    
    /* Couleurs de fond */
    --color-bg-primary: #FFFFFF;        /* Blanc */
    --color-bg-secondary: #F9FAFB;      /* Gris très clair */
    --color-bg-tertiary: #F3F4F6;       /* Gris clair */
    
    /* Couleurs de texte */
    --color-text-primary: #111827;      /* Noir doux */
    --color-text-secondary: #6B7280;    /* Gris moyen */
    --color-text-muted: #9CA3AF;        /* Gris clair */
    
    /* Bordures */
    --color-border: #E5E7EB;            /* Gris bordure */
    --color-border-hover: #D1D5DB;      /* Gris bordure hover */
    
    /* 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);
    
    /* Espacement (système 8px) */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 80px;
    
    /* Typographie */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-base: 0.2s ease-in-out;
    --transition-smooth: 0.3s ease-in-out;
}
.lang-switch {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem;
    transition: opacity 0.2s;
}

.lang-switch:hover {
    opacity: 0.8;
}

.lang-switch img {
    display: block;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 2px;
}



/* ========================================
   RESET & BASE
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: all var(--transition-base);
}

button {
    font-family: inherit;
    cursor: pointer;
}

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

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
}

.section {
    padding: var(--space-4xl) 0;
}

@media (max-width: 768px) {
    .section {
        padding: var(--space-3xl) 0;
    }
}

/* ========================================
   TYPOGRAPHIE
======================================== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    margin-bottom: var(--space-lg);
}

h2 {
    font-size: clamp(1.875rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    margin-bottom: var(--space-md);
}

h4 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

p {
    margin-bottom: var(--space-md);
}

/* ========================================
   NAVIGATION
======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-smooth);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    min-height: 70px;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.brand-icon {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
}

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

.nav-phone {
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    font-weight: 600;
    color: var(--color-text-primary);
}

.nav-phone:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: var(--space-sm);
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg);
    flex-direction: column;
    gap: var(--space-md);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

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

.mobile-menu a {
    padding: var(--space-md);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.mobile-menu a:hover {
    background: var(--color-bg-secondary);
    color: var(--color-primary);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-container .btn {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
}

/* ========================================
   BUTTONS
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4);
    transform: translateY(-1px);
}

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

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

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

.btn-outline:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.0625rem;
}

.btn-block {
    width: 100%;
}

/* ========================================
   HERO
======================================== */
.hero {
    padding-top: calc(70px + var(--space-4xl));
    padding-bottom: var(--space-4xl);
    background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.badge {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.hero h1 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
}

.hero-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.hero-description strong {
    color: var(--color-primary);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.hero-trust {
    display: flex;
    gap: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

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

.trust-icon {
    font-size: 1.5rem;
}

.trust-item div {
    display: flex;
    flex-direction: column;
}

.trust-item strong {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.trust-item span {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.hero-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .hero-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .hero {
        padding-top: calc(70px + var(--space-3xl));
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-trust {
        flex-direction: column;
        gap: var(--space-md);
    }
}

/* ========================================
   SECTION HEADER
======================================== */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-3xl);
}

.section-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ========================================
   TARIFS
======================================== */
.tarifs {
    background: var(--color-bg-secondary);
}

.tarifs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.tarif-card {
    position: relative;
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-smooth);
}

.tarif-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.tarif-card.featured {
    border-color: var(--color-primary);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15);
}

.tarif-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--color-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.tarif-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.tarif-price {
    display: flex;
    align-items: baseline;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.price-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.tarif-description {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.tarif-includes {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.tarif-includes li {
    padding: var(--space-sm) 0;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.tarifs-note {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl);
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
}

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

.tarifs-note p:last-child {
    margin-bottom: 0;
}

.tarifs-note strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.tarifs-guarantee {
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
    font-size: 0.9375rem;
    color: var(--color-success);
    font-weight: 500;
}

@media (max-width: 768px) {
    .tarifs-grid {
        grid-template-columns: 1fr;
    }
}

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

.service-card {
    padding: var(--space-xl);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-smooth);
}

.service-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

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

.service-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.service-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   ZONES
======================================== */
.zones {
    background: var(--color-bg-secondary);
}

.zones-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.zone-card {
    padding: var(--space-xl);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.zone-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.zone-list {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.zone-badge {
    display: inline-block;
    padding: 6px 12px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

@media (max-width: 768px) {
    .zones-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   AVIS CLIENTS
======================================== */
.avis {
    background: white;
}

.rating-summary {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.rating-stars {
    font-size: 2rem;
}

.rating-score {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
}

.rating-count {
    font-size: 1rem;
    color: var(--color-text-secondary);
}

.avis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.avis-card {
    padding: var(--space-xl);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-smooth);
}

.avis-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.avis-stars {
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
}

.avis-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.avis-author strong {
    display: block;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.avis-author span {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

@media (max-width: 768px) {
    .avis-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   FORMULAIRE DEVIS
======================================== */
.devis {
    background: var(--color-bg-secondary);
}

.devis-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-3xl);
}

.devis-info h2 {
    margin-bottom: var(--space-md);
}

.devis-info > p {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.devis-garanties {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.garantie-item {
    display: flex;
    gap: var(--space-md);
}

.garantie-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-success);
    color: white;
    font-weight: 700;
    border-radius: 50%;
}

.garantie-item strong {
    display: block;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.garantie-item span {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}

.devis-contact {
    padding: var(--space-lg);
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.devis-contact p {
    margin-bottom: var(--space-sm);
}

.contact-phone {
    display: inline-block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: var(--space-md) 0;
}

.contact-phone:hover {
    color: var(--color-primary-dark);
}

.contact-hours {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.devis-form {
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.devis-form h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--color-border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group small {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-top: 6px;
}

.radio-group,
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.radio-label,
.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.radio-label input[type="radio"],
.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.consent-checkbox {
    padding: var(--space-md);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
}

.form-privacy {
    margin-top: var(--space-md);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-align: center;
}

@media (max-width: 1024px) {
    .devis-wrapper {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   FAQ
======================================== */
.faq {
    background: white;
}

.faq-grid {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.faq-item {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--color-primary);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    background: none;
    border: none;
    text-align: left;
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-primary);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 2000px;
    padding: 0 var(--space-lg) var(--space-lg);
}

.faq-answer p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.faq-answer ul {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-md);
}

.faq-answer li {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.faq-answer strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

/* ========================================
   FOOTER
======================================== */
.footer {
    background: var(--color-text-primary);
    color: white;
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-section h4 {
    color: white;
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.footer-section p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-sm);
}

.footer-section a {
    display: block;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-sm);
    transition: color var(--transition-base);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   UTILITIES & RESPONSIVE
======================================== */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .btn {
        padding: 12px 20px;
    }
    
    .btn-large {
        padding: 14px 24px;
    }
}

/* Scroll to top animation */
html {
    scroll-padding-top: 80px;
}