:root {
    --bg: #fafafa;
    --bg-subtle: #ffffff;
    --text-dark: #1a1a1a;
    --text-light: #ffffff;
    --primary-vibrant: #0052CC; /* Bleu vibrant saturé */
    --accent-vibrant: #13DC4F; /* Vert cyan électrique vibrant */
    --cyan-vibrant: #00CFFF;
    --font-main: 'Inter', sans-serif;
    --font-accent: 'Space Grotesk', sans-serif; /* Police technique moderne */
    --shadow-soft: 0 10px 30px rgba(0,0,0,0.04);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Navbar (Claire) */
.navbar {
    background-color: var(--bg-subtle);
    color: var(--text-dark);
    padding: 1.2rem 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-family: var(--font-accent);
    font-size: 1.8rem;
    font-weight: 700;
}

.logo span {
    color: var(--primary-vibrant);
    font-weight: 300;
}

.navbar ul {
    list-style: none;
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.navbar a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 600;
    font-family: var(--font-accent);
    transition: color 0.3s ease;
}

.navbar a:hover {
    color: var(--primary-vibrant);
}

/* Boutons (Vibrants) */
.btn-primary, .btn-secondary {
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-family: var(--font-accent);
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-vibrant);
    color: var(--text-light) !important;
}

.btn-primary:hover {
    background-color: #fff;
    color: var(--primary-vibrant) !important;
    border: 2px solid var(--primary-vibrant);
    transform: translateY(-3px);
}

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

.btn-secondary:hover {
    background-color: var(--cyan-vibrant);
    color: var(--text-dark);
    transform: translateY(-3px);
}

/* Hero Section (Claire, Énergique) */
.hero {
    background-color: var(--bg-subtle);
    padding: 10rem 0;
    position: relative;
}

.flex-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
}

.hero-content h2 {
    font-family: var(--font-accent);
    font-size: 3.5rem;
    line-height: 1.2;
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
}

.hero-content h2 span {
    color: var(--primary-vibrant);
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.8;
}

/* Illustration Technique Abstraite */
.hero-graphic {
    width: 100%;
    height: 100%;
    position: relative;
}

.tech-graphic {
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 10% 20%, var(--cyan-vibrant) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, var(--primary-vibrant) 0%, transparent 40%),
        linear-gradient(45deg, rgba(255,255,255,0) 0%, rgba(19,220,79,0.3) 100%);
    opacity: 0.2;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Solutions Grid (Vibrante) */
.grid-solutions {
    padding: 8rem 0;
}

.section-title {
    font-family: var(--font-accent);
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 5rem;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.solution-card {
    background: var(--bg-subtle);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(0,0,0,0.03);
    transition: all 0.3s ease;
    overflow: hidden;
    position: relative;
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.06);
}

.solution-card:hover::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-vibrant), var(--cyan-vibrant));
}

.solution-card .icon-vibrant {
    width: 60px;
    height: 60px;
    margin-bottom: 2rem;
}

.icon-vibrant.cyan path { fill: var(--cyan-vibrant); }
.icon-vibrant.blue path { fill: var(--primary-vibrant); }
.icon-vibrant.green path { fill: var(--accent-vibrant); }

.solution-card h3 {
    font-family: var(--font-accent);
    color: var(--text-dark);
    margin-bottom: 1.2rem;
    font-size: 1.6rem;
}

/* Footer (Vibrant & Clair) */
footer {
    background-color: var(--bg-subtle);
    border-top: 1px solid rgba(0,0,0,0.03);
    padding: 4rem 0;
    margin-top: 2rem;
}

.footer-vibrant {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #555;
    font-size: 0.9rem;
}

.footer-credits a {
    color: var(--primary-vibrant);
    text-decoration: none;
    font-weight: 700;
}