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

body {
    font-family: system-ui, sans-serif;
    background: #0b0e1d;
    color: #f5f5f5;
    line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

/* HEADER */
header {
    position: sticky;
    top: 0;
    background: rgba(11, 14, 29, 0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: auto;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
}

.logo { font-weight: 700; font-size: 1rem; text-transform: uppercase; }
.logo span { color: #3abff8; }

.nav ul { display: flex; gap: 1.5rem; list-style: none; }

.nav a { position: relative; padding-bottom: 4px; }
.nav a::after {
    content: "";
    position: absolute;
    left: 0; bottom: 0;
    height: 2px; width: 0;
    background: #3abff8;
    transition: 0.3s;
}
.nav a:hover::after { width: 100%; }

/* HERO */
.hero {
    padding: 4rem 0;
    display: grid;
    grid-template-columns: 2fr 1.3fr;
    gap: 2rem;
}

.hero-title { font-size: 2.4rem; margin-bottom: 1rem; }
.hero-title span { color: #3abff8; }

.hero-subtitle { max-width: 35rem; margin-bottom: 1.5rem; color: #cbd5e1; }

.btn {
    padding: 0.7rem 1.4rem;
    border-radius: 999px;
    cursor: pointer;
    border: 1px solid transparent;
}
.btn-primary { background: #3abff8; color: #0b0e1d; }
.btn-outline { border-color: #94a3b8; color: #f8fafc; }
.btn:hover { opacity: 0.85; }

.hero-aside {
    background: #12162d;
    padding: 1.6rem;
    border-radius: 1rem;
    border: 1px solid rgba(255,255,255,0.08);
}

.hero-aside h2 { color: #3abff8; margin-bottom: 0.5rem; }

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 1rem;
    margin-top: 1rem;
}

.stat {
    background: #0b0e1d;
    padding: 1rem;
    border-radius: 0.7rem;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.06);
}

/* SECTIONS */
section { padding: 3rem 0; }

h2 span { color: #3abff8; }

.section-intro { max-width: 40rem; margin-bottom: 1.5rem; color: #cbd5e1; }

.cards {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 1.5rem;
}

.card {
    background: #12162d;
    padding: 1.2rem;
    border-radius: 1rem;
    border: 1px solid rgba(255,255,255,0.07);
    transition: 0.2s;
}
.card:hover { transform: translateY(-4px); border-color: #3abff8; }

.tag { font-size: 0.8rem; color: #94a3b8; }

/* CONTACT */
.contact-box {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 1.8rem;
}

form {
    background: #12162d;
    padding: 1.4rem;
    border-radius: 1rem;
}

label { display: block; margin-bottom: 0.3rem; }

input, textarea {
    width: 100%;
    padding: 0.7rem;
    margin-bottom: 0.9rem;
    border-radius: 0.5rem;
    background: #0b0e1d;
    border: 1px solid #334155;
    color: #fff;
}

textarea { min-height: 110px; }

#faq {
    padding: 80px 0;
}

.faq-list {
    display: grid;
    gap: 16px;
    margin-top: 32px;
}

.faq-item {
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 14px;
    background: #fff;
    overflow: hidden;
}

.faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 20px 24px;
    font-size: 1.05rem;
    font-weight: 600;
    position: relative;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.4rem;
    line-height: 1;
}

.faq-item[open] summary::after {
    content: "−";
}

.faq-content {
    padding: 0 24px 20px;
}

.faq-content p {
    margin: 0;
    color: #555;
    line-height: 1.7;
}

/* FIX FAQ DARK MODE */
.faq-item {
    background: #ffffff;
    border: 1px solid rgba(255,255,255,0.08);
}

.faq-item summary {
    color: #111827; /* TEXTE QUESTION */
}

.faq-item summary::after {
    color: #2563eb; /* + / - */
}

.faq-content p {
    color: #4b5563; /* TEXTE RÉPONSE */
}

/* Hover pour visibilité */
.faq-item summary:hover {
    background: rgba(37, 99, 235, 0.05);
}

/* FOOTER */
footer {
    margin-top: 3rem;
    padding: 1.3rem 0;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 0.85rem;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links { display: flex; gap: 1rem; }

/* RESPONSIVE */
@media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; }
    .cards { grid-template-columns: repeat(2,1fr); }
    .contact-box { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .nav ul { display: none; }
    .cards { grid-template-columns: 1fr; }
}