body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
    padding: 0;
    background: #050816;
    color: #f5f5f5;
}

header {
    padding: 2rem 1.5rem;
    text-align: center;
    background: radial-gradient(circle at top, #22c55e 0, #050816 55%);
}

h1 {
    margin: 0 0 0.5rem;
    font-size: 2.4rem;
}

h2 {
    margin-top: 2rem;
}

p {
    max-width: 720px;
    margin: 0.5rem auto;
    line-height: 1.6;
}

.tagline {
    opacity: 0.85;
}

main {
    padding: 2rem 1.5rem 3rem;
    max-width: 960px;
    margin: 0 auto;
}

.pill {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    border: 1px solid #22c55e55;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
}

.grid {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.card {
    border-radius: 1rem;
    padding: 1.25rem;
    background: #0b1020;
    border: 1px solid #1f2937;
}

.card h3 {
    margin-top: 0;
}

footer {
    text-align: center;
    padding: 1.5rem;
    font-size: 0.8rem;
    opacity: 0.7;
}

/* --- STYLE AJOUTÉ POUR L\'IA TOTAL --- */
.ai-section {
    background: #0b1020;
    border: 1px solid #22c55e44;
    border-radius: 1rem;
    padding: 1.5rem;
    margin-top: 2.5rem;
}

.ai-section h2 {
    margin-top: 0;
    color: #22c55e;
}

textarea {
    width: 100%;
    height: 100px;
    padding: 10px;
    background: #050816;
    border: 1px solid #1f2937;
    border-radius: 8px;
    color: #f5f5f5;
    font-family: inherit;
    resize: vertical;
    box-sizing: border-box;
    margin-top: 10px;
}

textarea:focus {
    border-color: #22c55e;
    outline: none;
}

button {
    background: #22c55e;
    color: #050816;
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    margin-top: 10px;
    transition: background 0.2s;
}

button:hover {
    background: #16a34a;
}

#response {
    margin-top: 20px;
    padding: 15px;
    background: #050816;
    border-left: 3px solid #22c55e;
    border-radius: 4px;
    white-space: pre-wrap;
    display: none;
}

.loading {
    color: #22c55e;
    font-style: italic;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0.6;
    }
}