:root {
    --primary: #0077B6;
    --primary-light: #0284c7;
    --primary-dark: #005f92;
    --secondary: #90E0EF;
    --dark: #0f172a;
    --dark-alt: #1e293b;
    --light: #f8fafc;
    --surface: #ffffff;
    --text: #334155;
    --text-muted: #64748B;
    --white: #FFFFFF;
    --border: #e2e8f0;
    
    /* Clean Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    --gradient-dark: linear-gradient(135deg, var(--dark) 0%, var(--dark-alt) 100%);
    
    /* Solid Shadows */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.1);
    --shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.1), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
    
    /* Professional Easing */
    --transition: all 0.2s ease-in-out;
    
    --container: 1240px;
    --radius: 8px;
    --radius-lg: 12px;
}

html { scroll-behavior: smooth; }

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

body {
    font-family: 'Inter', 'Plus Jakarta Sans', sans-serif;
    background-color: var(--light);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Technical Background Utilities */
.bg-light { background-color: var(--light); }
.bg-white { background-color: var(--surface); }
.bg-dark { background: var(--dark); color: var(--white); border-top: 1px solid rgba(255,255,255,0.05); }

/* Clean Grid Pattern */
.bg-grid {
    background-color: var(--light);
    background-image: linear-gradient(to right, rgba(15, 23, 42, 0.03) 1px, transparent 1px),
                      linear-gradient(to bottom, rgba(15, 23, 42, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

.relative-z { position: relative; z-index: 1; }

::selection {
    background: var(--primary);
    color: var(--white);
}

h1, h2, h3, h4 {
    color: var(--dark);
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4 { color: var(--white); }

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

ul { list-style: none; }

img {
    max-width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: var(--radius);
    display: block;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
}

.text-primary { color: var(--primary); }

/* Animations */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Professional Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    border: 1px solid transparent;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary);
    color: var(--white) !important;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--white);
    color: var(--dark) !important;
    border-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--light);
    border-color: #cbd5e1;
}

.btn-text {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
    margin-top: auto;
}

.btn-text:hover { color: var(--primary-dark); gap: 12px; }

/* Clean Header */
.main-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.logo span { color: var(--dark); }
.logo-icon { width: 28px; height: 28px; stroke-width: 2.5; }

.nav ul { display: flex; align-items: center; gap: 32px; }
.nav a { font-weight: 500; font-size: 0.95rem; color: var(--text-muted); }
.nav a:hover, .nav a.active { color: var(--primary); }

/* Hero Section */
.hero {
    padding: 80px 0 100px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 520px;
}

.hero-image {
    position: relative;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.hero-image img { border-radius: 0; }

.data-badge {
    position: absolute;
    bottom: 20px;
    left: -20px;
    background: var(--surface);
    padding: 16px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 2;
}

.data-badge-icon {
    width: 48px; height: 48px;
    background: var(--light);
    color: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.data-badge strong { display: block; font-size: 1.2rem; color: var(--dark); font-weight: 700; }
.data-badge span { font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

/* Sections */
.section-padding { padding: 100px 0; }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 60px; }
.section-header h2 { font-size: 2.5rem; margin-bottom: 16px; }
.section-header p { font-size: 1.1rem; color: var(--text-muted); }
.bg-dark .section-header p { color: #94a3b8; }

/* Clean Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-card {
    background: var(--surface);
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    box-shadow: var(--shadow);
    border-color: #cbd5e1;
    transform: translateY(-4px);
}

.service-icon {
    width: 56px; height: 56px;
    background: var(--light);
    color: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    border: 1px solid var(--border);
}

.service-icon i { width: 24px; height: 24px; }
.service-card h3 { font-size: 1.25rem; margin-bottom: 12px; }
.service-card p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 24px; flex-grow: 1; }

/* Agence Page Header */
.page-hero {
    padding: 100px 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.page-hero h1 { font-size: 3rem; margin-bottom: 16px; }
.page-hero p { font-size: 1.15rem; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

.agence-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.agence-intro h2 { font-size: 2.2rem; margin-bottom: 24px; }

/* Data/Stats Grid */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.stat-card {
    background: var(--surface);
    padding: 32px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
}

.bg-dark .stat-card {
    background: rgba(255,255,255,0.02);
    border-color: rgba(255,255,255,0.1);
}

.stat-card span {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.stat-card p { font-size: 0.9rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; }
.bg-dark .stat-card p { color: #94a3b8; }

/* Project Cards */
.project-detail-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 60px;
}

.project-detail-img { height: 100%; min-height: 400px; border-right: 1px solid var(--border); }
.project-detail-img img { height: 100%; width: 100%; object-fit: cover; border-radius: 0; }
.project-detail-content { padding: 48px; display: flex; flex-direction: column; justify-content: center; }

.project-detail-content h3 { font-size: 2rem; margin-bottom: 16px; }
.project-tag {
    display: inline-block;
    background: var(--light);
    color: var(--text);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--border);
    margin-right: 8px;
    margin-bottom: 16px;
}

.project-detail-text { margin-bottom: 24px; color: var(--text-muted); }

.project-results {
    background: var(--light);
    padding: 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    margin-bottom: 24px;
}

.project-results li { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; font-weight: 600; font-size: 0.9rem; }
.project-results li:last-child { margin-bottom: 0; }
.project-results li i { color: var(--primary); width: 18px; height: 18px; }

/* Contact Form */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 60px; }
.contact-form {
    background: var(--surface);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; font-size: 0.9rem; }
.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.95rem;
    background: var(--surface);
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0, 119, 182, 0.1); }

/* Footer */
.main-footer {
    background: var(--dark);
    color: var(--white);
    padding: 80px 0 32px;
    border-top: 1px solid var(--border);
}

.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 60px; }
.footer-logo { font-size: 1.5rem; font-weight: 800; color: var(--white); display: flex; align-items: center; gap: 8px; margin-bottom: 16px; text-transform: uppercase; }
.footer-logo span { color: var(--primary-light); }

.footer-col h4 { color: var(--white); margin-bottom: 20px; font-size: 1.1rem; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col a { color: #94a3b8; font-size: 0.95rem; }
.footer-col a:hover { color: var(--white); }

.footer-bottom { text-align: center; border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 32px; color: #64748b; font-size: 0.85rem; }

/* Responsive */
@media (max-width: 992px) {
    .hero-grid, .agence-intro, .contact-grid { gap: 40px; }
    .project-detail-card { grid-template-columns: 1fr; }
    .project-detail-img { height: 300px; min-height: 300px; border-right: none; border-bottom: 1px solid var(--border); }
    .stats-bar { grid-template-columns: repeat(2, 1fr); }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav { display: none; }
    .hero-grid, .agence-intro, .services-grid, .contact-grid, .footer-grid, .stats-bar { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 2.5rem; }
    .section-header h2 { font-size: 2rem; }
    .data-badge { display: none; }
}