/* =========================
   RESET & BASE
========================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", Arial, sans-serif;
    background: linear-gradient(180deg, #020617 0%, #0F1738 100%);
    color: #E5E7EB;
    line-height: 1.8;
}

/* =========================
   CONTAINER
========================= */
.container {
    width: 90%;
    max-width: 1100px;
    margin: auto;
}

/* =========================
   HEADER
========================= */
header {
    background: rgba(2,6,23,0.9);
    backdrop-filter: blur(8px);
    padding: 20px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

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

.logo { height: 200px; }
.logo-small { height: 130px; }

nav ul {
    list-style: none;
    display: flex;
    gap: 32px;
}

nav ul li a {
    color: #CBD5F5;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover { color: #A5B4FC; }

/* =========================
   HERO
========================= */
#hero {
    background: radial-gradient(circle at top, #1E293B, #020617 70%);
    padding: 140px 0 100px;
    text-align: center;
}

#hero h1 {
    font-size: 3rem;
    color: #F8FAFC;
}

#hero p {
    margin-top: 20px;
    font-size: 1.2rem;
    color: #94A3B8;
}

.hero-buttons { margin-top: 35px; display: flex; justify-content:center; gap:20px; }

/* =========================
   BOUTONS
========================= */
.btn {
    display: inline-block;
    padding: 15px 42px;
    background: linear-gradient(135deg, #6366F1, #4F46E5);
    color: white;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 15px 40px rgba(99,102,241,0.35);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 25px 60px rgba(99,102,241,0.45);
}

/* =========================
   SECTIONS
========================= */
section {
    padding: 100px 0;
}

/* =========================
   CARDS
========================= */
.cards-section h2 { text-align:center; margin-bottom:50px; font-size:2.5rem; }

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 40px;
}

.card {
    background: linear-gradient(180deg, rgba(30,41,59,0.95), rgba(2,6,23,0.95));
    padding: 35px 25px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 20px 60px rgba(2,6,23,0.5);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 80px rgba(2,6,23,0.7);
}

.card h3 { margin-bottom:15px; color:#C7D2FE; }

/* =========================
   GUIDE-BLOCKS
========================= */
.guide-block {
    margin-top: 50px;
    padding: 40px;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(30,41,59,0.85), rgba(2,6,23,0.95));
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 25px 70px rgba(2,6,23,0.65);
    transition: transform 0.3s, box-shadow 0.3s;
}

.guide-block:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 60px rgba(79,70,229,0.4);
}

.guide-block h3 { font-size: 1.8rem; color: #C7D2FE; margin-bottom:15px; }

.example {
    margin-top: 20px;
    padding: 20px 25px;
    border-radius: 15px;
    background: rgba(99,102,241,0.15);
    border-left: 5px solid #6366F1;
    color: #F8FAFC;
}

/* =========================
   CONTACT
========================= */
.contact-section input, .contact-section textarea {
    width: 100%;
    padding: 12px 15px;
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid #94A3B8;
    background: #1E293B;
    color: #F8FAFC;
}

.contact-section textarea { resize: none; }

/* =========================
   FOOTER
========================= */
footer {
    text-align:center;
    padding:50px 0;
    background:#0f1738;
    color:#94A3B8;
    border-top:1px solid rgba(255,255,255,0.05);
    font-size:0.9rem;
}

/* =========================
   RESPONSIVE
========================= */
@media(max-width:768px) {
    #hero h1 { font-size:2rem; }
    .cards { gap:25px; }
    .guide-block { padding:30px; }
}