:root {
    --bg-body: #f8fafc;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --white: #ffffff;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --nav-height: 70px;
    --container-width: 1200px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-body: #0b1120;
        --text-main: #f8fafc;
        --text-muted: #94a3b8;
        --white: #1e293b;
        --accent: #3b82f6;
        --accent-hover: #60a5fa;
    }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; transition: 0.2s; }
img { max-width: 100%; height: auto; display: block; }

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* NAVBAR */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    z-index: 1000;
    display: flex;
    align-items: center;
}

@media (prefers-color-scheme: dark) {
    .navbar { background: rgba(11, 17, 32, 0.8); border-bottom: 1px solid rgba(255,255,255,0.05); }
}

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

.logo {
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo-icon { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-link { color: var(--text-muted); font-weight: 500; font-size: 0.9rem; }
.nav-link:hover { color: var(--accent); }

/* Bouton principal Navbar (actif) */
.btn-nav-primary {
    background-color: var(--accent);
    color: white;
    padding: 8px 20px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s;
}
.btn-nav-primary:hover { background-color: var(--accent-hover); transform: translateY(-1px); }

/* Bouton Navbar Désactivé (Coming Soon) */
.btn-nav-disabled {
    background-color: rgba(128,128,128,0.1);
    color: var(--text-muted);
    padding: 8px 20px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: default;
    border: 1px solid rgba(128,128,128,0.1);
}

/* HERO */
.hero {
    padding-top: 140px;
    padding-bottom: 80px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

/* Badge spécifique "In Development" */
.hero-badge.dev {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.03em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 60px;
}

.btn-primary {
    background-color: var(--text-main);
    color: var(--bg-body);
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 20px rgba(0,0,0,0.1); }

/* Bouton Primaire Désactivé */
.btn-primary.disabled {
    background-color: rgba(128,128,128,0.1);
    color: var(--text-muted);
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
    border: 1px solid rgba(128,128,128,0.1);
}

@media (prefers-color-scheme: dark) {
    .btn-primary { background-color: var(--accent); color: white; }
    .btn-primary.disabled { background-color: rgba(255,255,255,0.05); color: rgba(255,255,255,0.4); }
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-main);
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    border: 1px solid rgba(128,128,128,0.2);
}
.btn-secondary:hover { background-color: rgba(128,128,128,0.05); }

.hero-image-container {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    border-radius: 12px;
    box-shadow: 0 20px 50px -10px rgba(0,0,0,0.15);
    border: 1px solid rgba(128,128,128,0.1);
    overflow: hidden;
}

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

/* FEATURES */
.section { padding: 80px 0; }
.bg-alt { background-color: rgba(128,128,128,0.03); }

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 10px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 60px;
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--white);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid rgba(128,128,128,0.1);
    transition: transform 0.2s;
}
.card:hover { transform: translateY(-5px); border-color: var(--accent); }

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 20px;
}

/* Icon Colors */
.card-icon.blue { background: rgba(37, 99, 235, 0.1); color: #2563eb; }
.card-icon.orange { background: rgba(249, 115, 22, 0.1); color: #f97316; }
.card-icon.purple { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.card-icon.pink { background: rgba(236, 72, 153, 0.1); color: #ec4899; }
.card-icon.green { background: rgba(34, 197, 94, 0.1); color: #22c55e; }
.card-icon.yellow { background: rgba(234, 179, 8, 0.1); color: #eab308; }

.card h3 { font-size: 1.2rem; margin-bottom: 10px; font-weight: 700; }
.card p { color: var(--text-muted); font-size: 0.95rem; }

/* CTA */
.cta-section { padding: 100px 0; }
.cta-box {
    text-align: center;
    background: linear-gradient(135deg, var(--bg-body), var(--white));
    border: 1px solid rgba(128,128,128,0.1);
    padding: 60px 20px;
    border-radius: 24px;
}
.cta-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-top: 30px;
}
.btn-primary.large { padding: 16px 40px; font-size: 1.1rem; }
.small-text { font-size: 0.85rem; color: var(--text-muted); opacity: 0.8; }

/* FOOTER */
footer { border-top: 1px solid rgba(128,128,128,0.1); padding: 40px 0; margin-top: auto; }
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.footer-text { color: var(--text-muted); font-size: 0.9rem; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--accent); }

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 2.5rem; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-content { flex-direction: column; text-align: center; }
}