/* ==========================================================================
   Design System - Nicolas Burny (nburny.dev)
   Style: Corporate, Clair, Lisible & Sur-Mesure
   ========================================================================== */

:root {
    --primary: #0F172A;        /* Slate Navy */
    --primary-light: #1E293B;
    --accent: #2563EB;         /* Tech Royal Blue */
    --accent-hover: #1D4ED8;
    --accent-light: #EFF6FF;
    
    --bg-body: #FFFFFF;
    --bg-light: #F8FAFC;       /* Soft Light Slate Gray */
    --bg-card: #FFFFFF;
    
    --text-main: #0F172A;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    
    --border-color: #E2E8F0;
    --border-hover: #CBD5E1;
    
    --font-heading: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.12);
    
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--primary);
    font-weight: 700;
    line-height: 1.25;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-hover);
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.hidden {
    display: none !important;
}

.mt-4 { margin-top: 1rem; }
.mb-2 { margin-bottom: 0.5rem; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--accent);
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

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

.btn-secondary:hover {
    background-color: #E2E8F0;
    color: var(--primary);
    transform: translateY(-2px);
}

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

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

.btn-accent {
    background-color: #FFFFFF;
    color: var(--primary);
    font-weight: 700;
}

.btn-accent:hover {
    background-color: var(--bg-light);
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #FFFFFF;
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #FFFFFF;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

.btn-block {
    width: 100%;
}

/* Header Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    transition: var(--transition);
}

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

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-badge {
    background: var(--primary);
    color: #FFFFFF;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.1rem;
    padding: 0.4rem 0.6rem;
    border-radius: var(--radius-sm);
}

.brand-name {
    display: block;
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--primary);
}

.brand-sub {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-muted);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.social-nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    padding: 0.4rem;
    border-radius: var(--radius-full);
    transition: var(--transition);
}

.social-nav-link:hover {
    color: #0A66C2;
    background-color: var(--bg-light);
    transform: translateY(-1px);
}

/* Language Switcher */
.lang-switch {
    display: flex;
    align-items: center;
    background: var(--bg-light);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

.lang-btn {
    background: none;
    border: none;
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition);
}

.lang-btn.active {
    background: var(--accent);
    color: #FFFFFF;
}

.lang-divider {
    font-size: 0.75rem;
    color: var(--border-color);
}

.hamburger-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.hamburger-btn span {
    width: 24px;
    height: 2.5px;
    background: var(--primary);
    border-radius: 2px;
}

/* Sections */
.section {
    padding: 6rem 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.bg-primary {
    background-color: var(--primary);
}

.text-white {
    color: #FFFFFF;
}

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

.section-header {
    margin-bottom: 3.5rem;
}

.section-subtitle {
    display: inline-block;
    text-transform: uppercase;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.25rem;
    letter-spacing: -0.5px;
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 680px;
    margin: 0 auto;
}

.header-line {
    width: 60px;
    height: 4px;
    background: var(--accent);
    margin: 1rem auto 0 auto;
    border-radius: var(--radius-full);
}

/* Hero Section */
.hero-section {
    padding: 10rem 0 6rem 0;
    background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.4rem 1rem;
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 600;
    font-size: 0.85rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(37, 99, 235, 0.15);
    margin-bottom: 1.5rem;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: #10B981;
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
    font-size: 3rem;
    letter-spacing: -1px;
    margin-bottom: 1.25rem;
    color: var(--primary);
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.25rem;
    max-width: 620px;
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.tech-stack-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.stack-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stack-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-md);
}

/* Glass & Workflow Card Visual */
.workflow-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.workflow-svg {
    width: 100%;
    height: auto;
    max-height: 380px;
}

.workflow-node {
    transition: filter 0.25s ease;
}

.workflow-node:hover {
    filter: brightness(1.15) drop-shadow(0 4px 12px rgba(37, 99, 235, 0.25));
}

.pulse-line {
    stroke-dasharray: 40 200;
    stroke-dashoffset: 240;
    animation: flowPulse 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.pulse-delay-1 { animation-delay: 0s; }
.pulse-delay-2 { animation-delay: 0.8s; }
.pulse-delay-3 { animation-delay: 1.6s; }

@keyframes flowPulse {
    0% {
        stroke-dashoffset: 240;
        opacity: 0.2;
    }
    30% {
        opacity: 1;
    }
    100% {
        stroke-dashoffset: -240;
        opacity: 0.2;
    }
}

/* Trust Banner Section */
.trust-banner {
    background: #F8FAFC;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 2.25rem 0;
}

.trust-label {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.trust-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.trust-name {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.trust-tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    background: rgba(37, 99, 235, 0.08);
    padding: 0.15rem 0.6rem;
    border-radius: var(--radius-full);
}

.trust-divider {
    width: 1px;
    height: 32px;
    background: var(--border-color);
}

@media (max-width: 768px) {
    .trust-divider {
        display: none;
    }
    .trust-logos {
        gap: 1.5rem;
    }
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.intro-card {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
}

.intro-card h3 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

.intro-card p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

.about-features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.feature-box {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.feature-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}

.feat-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.feature-box h4 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.feature-box p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Services Cards Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

.step-badge {
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--accent-light);
    color: var(--accent);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.step-badge-lock {
    background: #F1F5F9;
    color: var(--text-muted);
    border-color: var(--border-color);
}

.service-card.highlighted-card {
    border: 2px solid var(--accent);
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.03) 0%, #FFFFFF 100%);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 1.25rem;
}

.service-card h3 {
    font-size: 1.35rem;
    margin-bottom: 0.85rem;
}

.service-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.service-bullets {
    list-style: none;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.service-bullets li {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-bullets li::before {
    content: "✓";
    color: var(--accent);
    font-weight: 800;
}

/* Services Action Bar (Unified CTA) */
.services-action-bar {
    margin-top: 3rem;
    padding: 2rem;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.action-bar-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1.25rem;
}

.action-bar-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Portfolio Filters & Cards */
.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--accent);
    color: #FFFFFF;
    border-color: var(--accent);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.portfolio-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.portfolio-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}

.portfolio-img-container {
    height: 180px;
    background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.project-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
}

.project-icon-placeholder {
    font-size: 3.5rem;
}

.portfolio-content {
    padding: 1.75rem;
}

.portfolio-content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.6rem;
}

.portfolio-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

.portfolio-techs {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.portfolio-techs span {
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    color: var(--primary);
}

/* Contact Banner */
.contact-title {
    color: #FFFFFF;
    font-size: 2.25rem;
    margin-bottom: 0.75rem;
}

.contact-subtitle {
    color: #94A3B8;
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
}

.contact-buttons {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    flex-wrap: wrap;
    margin-bottom: 3.5rem;
}

.direct-contact-info {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2.5rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 600;
    color: #E2E8F0;
}

.info-item a {
    color: #FFFFFF;
}

.info-item a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    background: #090D16;
    color: #94A3B8;
    padding: 3rem 0;
    border-top: 1px solid #1E293B;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-brand .brand-name {
    color: #FFFFFF;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: #94A3B8;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: #FFFFFF;
}

.footer-legal p {
    font-size: 0.85rem;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(6px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-card {
    background: #FFFFFF;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 580px;
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-card-lg {
    max-width: 820px;
}

.modal-overlay.active .modal-card {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: var(--bg-light);
    border: none;
    font-size: 1.5rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.modal-header {
    margin-bottom: 1.75rem;
}

.modal-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.4rem;
}

.modal-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--primary);
    margin-bottom: 0.4rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-main);
    background: var(--bg-light);
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    background: #FFFFFF;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.5rem;
}

.success-message {
    text-align: center;
    padding: 2rem 0;
}

.success-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.booking-picker-container {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.picker-step label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
}

/* GDPR Note & Legal Modal */
.form-gdpr-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.legal-content {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    font-size: 0.92rem;
    color: var(--text-main);
}

.legal-block h4 {
    font-size: 1.05rem;
    margin-bottom: 0.3rem;
}

.modal-scrollable {
    max-height: 85vh;
    overflow-y: auto;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .hero-title {
        font-size: 2.4rem;
    }
    .about-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hamburger-btn {
        display: flex;
    }
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        transition: var(--transition);
    }
    .nav-menu.active {
        transform: translateY(0);
    }
    .hero-title {
        font-size: 2rem;
    }
    .about-features-grid {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .direct-contact-info {
        flex-direction: column;
        gap: 1rem;
    }
}