/* ===================================================
   VARIABLES GLOBALES & THÈME DARK MODERN
=================================================== */
:root {
    --bg-main: #06080d;
    --bg-panel: rgba(16, 22, 34, 0.65);
    --bg-panel-hover: rgba(22, 30, 46, 0.85);
    --border-glass: rgba(255, 255, 255, 0.1);
    --border-highlight: rgba(0, 242, 254, 0.35);
    
    --primary: #00f2fe;
    --primary-alt: #4facfe;
    --accent-purple: #8a2be2;
    --text-main: #f0f4f8;
    --text-muted: #94a3b8;
    --text-sub: #64748b;
    
    --font-heading: 'Space Grotesk', 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-sm: 8px;
    
    --shadow-glass: 0 20px 40px rgba(0, 0, 0, 0.5);
    --glow-cyan: 0 0 25px rgba(0, 242, 254, 0.35);
}

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

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Arrière-plan Vanta 3D fixé */
#vanta-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section {
    padding: 100px 0;
    position: relative;
    z-index: 2;
}

/* ===================================================
   TYPOGRAPHIE & DÉGRADÉS
=================================================== */
h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    color: #ffffff;
    font-weight: 700;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-alt) 50%, #c084fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header {
    text-align: center;
    max-width: 750px;
    margin: 0 auto 60px auto;
}

.section-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(0, 242, 254, 0.1);
    border: 1px solid rgba(0, 242, 254, 0.3);
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.75rem;
    margin-bottom: 18px;
}

.section-desc {
    font-size: 1.15rem;
    color: var(--text-muted);
}

/* Effet Panneau de Verre (Glassmorphism) */
.glass-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glass);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
    border-color: var(--border-highlight);
    box-shadow: 0 25px 50px rgba(0, 242, 254, 0.15);
}

/* ===================================================
   BARRE DE NAVIGATION
=================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.4s ease;
}

.navbar.scrolled {
    padding: 14px 0;
    background: rgba(6, 8, 13, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
}

.nav-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.45rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    letter-spacing: 0.5px;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #ffffff;
}

.btn-nav {
    padding: 10px 22px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-glass);
    border-radius: 50px;
    color: #fff;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-nav:hover {
    background: var(--primary);
    color: #000;
    border-color: var(--primary);
    box-shadow: var(--glow-cyan);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background-color: #fff;
    transition: 0.3s;
}

/* ===================================================
   SECTION HERO
=================================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 140px;
    padding-bottom: 80px;
    z-index: 2;
}

.hero-content {
    max-width: 960px;
    text-align: center;
    margin: 0 auto;
}

.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 18px;
    background: rgba(16, 22, 34, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50px;
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.status-pulse {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 10px #10b981;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.8; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
    font-size: 3.8rem;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 760px;
    margin: 0 auto 40px auto;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 70px;
}

/* Boutons réutilisables */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-alt) 100%);
    color: #040914;
    box-shadow: var(--glow-cyan);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 242, 254, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Grille des métriques */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 40px;
}

.metric-card {
    text-align: center;
}

.metric-value {
    display: block;
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}

.metric-label {
    font-size: 0.88rem;
    color: var(--text-muted);
}

/* ===================================================
   SERVICES
=================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.service-card.featured {
    border-color: var(--border-highlight);
    background: linear-gradient(180deg, rgba(22, 32, 52, 0.85) 0%, rgba(16, 22, 34, 0.85) 100%);
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--primary);
    color: #040914;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 50px;
    text-transform: uppercase;
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 1.45rem;
    margin-bottom: 16px;
}

.service-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

.service-list {
    list-style: none;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 20px;
}

.service-list li {
    font-size: 0.88rem;
    color: var(--text-main);
    margin-bottom: 10px;
    position: relative;
    padding-left: 18px;
}

.service-list li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* ===================================================
   PORTFOLIO INTERACTIF
=================================================== */
.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 50px;
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn.active, .filter-btn:hover {
    background: var(--primary);
    color: #040914;
    font-weight: 600;
    border-color: var(--primary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.portfolio-card {
    overflow: hidden;
    cursor: pointer;
}

.portfolio-preview {
    height: 220px;
    position: relative;
    background-size: cover;
    background-position: center;
}

.visual-1 {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4338ca 100%);
}
.visual-2 {
    background: linear-gradient(135deg, #18181b 0%, #27272a 50%, #3f3f46 100%);
}
.visual-3 {
    background: linear-gradient(135deg, #064e3b 0%, #065f46 50%, #047857 100%);
}

.preview-overlay {
    position: absolute;
    bottom: 15px;
    left: 15px;
}

.preview-tag {
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    color: #fff;
}

.portfolio-body {
    padding: 24px;
}

.project-type {
    display: block;
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.portfolio-body h4 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.portfolio-body p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 18px;
}

.project-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
    color: #fff;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 14px;
    font-weight: 500;
}

/* ===================================================
   SIMULATEUR DE DEVIS
=================================================== */
.simulator-wrapper {
    padding: 50px;
}

.simulator-layout {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 40px;
    align-items: start;
}

.sim-group {
    margin-bottom: 30px;
}

.sim-label {
    display: block;
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: 14px;
    color: #fff;
}

.choice-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.choice-cards.mini {
    grid-template-columns: repeat(2, 1fr);
}

.choice-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.choice-card:hover {
    border-color: rgba(255, 255, 255, 0.3);
}

.choice-card.active {
    border-color: var(--primary);
    background: rgba(0, 242, 254, 0.08);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
}

.choice-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: #fff;
    margin-bottom: 4px;
}

.choice-sub {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.3;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.checkbox-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.checkbox-card:hover {
    border-color: rgba(255, 255, 255, 0.25);
}

.checkbox-card input {
    display: none;
}

.custom-check {
    width: 20px;
    height: 20px;
    border: 2px solid var(--text-sub);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.checkbox-card input:checked + .custom-check {
    background-color: var(--primary);
    border-color: var(--primary);
}

.checkbox-card input:checked + .custom-check::after {
    content: "✓";
    color: #040914;
    font-size: 13px;
    font-weight: bold;
}

.check-text {
    font-size: 0.88rem;
    color: var(--text-main);
}

/* Résumé fixe du simulateur */
.summary-box {
    background: rgba(10, 14, 24, 0.85);
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-lg);
    padding: 30px;
    position: sticky;
    top: 100px;
}

.summary-box h4 {
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.price-display {
    margin-bottom: 12px;
}

.total-price {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.tax-tag {
    display: block;
    font-size: 0.75rem;
    color: var(--text-sub);
    margin-top: 6px;
}

.monthly-display {
    font-size: 0.95rem;
    color: #a78bfa;
    padding-bottom: 15px;
    margin-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.summary-details {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.summary-details ul {
    margin-top: 8px;
    padding-left: 18px;
}

.summary-details li {
    margin-bottom: 4px;
}

.summary-perks {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 16px 0;
    margin-bottom: 20px;
}

.perk-item {
    font-size: 0.82rem;
    color: #10b981;
    margin-bottom: 6px;
}

/* ===================================================
   MÉTHODE / PROCESS TIMELINE
=================================================== */
.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.timeline-step {
    padding: 30px;
    position: relative;
}

.step-number {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: rgba(0, 242, 254, 0.3);
    margin-bottom: 12px;
}

.timeline-step h4 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.timeline-step p {
    font-size: 0.88rem;
    color: var(--text-muted);
}

/* ===================================================
   FAQ ACCORDION
=================================================== */
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    padding: 20px 26px;
    cursor: pointer;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.05rem;
}

.faq-icon {
    font-size: 1.4rem;
    color: var(--primary);
    transition: transform 0.3s;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease-out;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    margin-top: 14px;
}

/* ===================================================
   FORMULAIRE DE CONTACT
=================================================== */
.contact-wrapper {
    padding: 50px;
    position: relative;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}

.form-group input, .form-group textarea {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color 0.3s, background 0.3s;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.05rem;
}

/* Modal de succès */
.form-success-modal {
    text-align: center;
    padding: 40px 20px;
}

.success-icon {
    width: 60px;
    height: 60px;
    background: #10b981;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 20px auto;
    box-shadow: 0 0 20px #10b981;
}

.form-success-modal h3 {
    font-size: 1.6rem;
    margin-bottom: 12px;
}

.form-success-modal p {
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto 24px auto;
}

/* ===================================================
   FOOTER
=================================================== */
.footer {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(4, 6, 10, 0.9);
    padding: 70px 0 30px 0;
    position: relative;
    z-index: 2;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-col p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 14px;
    max-width: 320px;
}

.footer-col h5 {
    font-size: 1.05rem;
    margin-bottom: 16px;
}

.footer-col a, .footer-col span {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.88rem;
    margin-bottom: 10px;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 24px;
    font-size: 0.82rem;
    color: var(--text-sub);
}

/* ===================================================
   RESPONSIVE DESIGN (TABLETTES & MOBILES)
=================================================== */
@media (max-width: 992px) {
    .hero-title { font-size: 2.8rem; }
    .services-grid, .portfolio-grid { grid-template-columns: 1fr; }
    .process-timeline { grid-template-columns: 1fr 1fr; }
    .simulator-layout { grid-template-columns: 1fr; }
    .metrics-grid { grid-template-columns: 1fr 1fr; }
    .footer-content { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(6, 8, 13, 0.96);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 30px;
        border-bottom: 1px solid var(--border-glass);
        gap: 20px;
    }
    .nav-links.active { display: flex; }
    .mobile-toggle { display: flex; }
    .choice-cards, .checkbox-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; }
    .simulator-wrapper, .contact-wrapper { padding: 25px; }
}