:root {
    --primary: #102a5e; /* Bleu Marine */
    --accent: #f59e0b;  /* Ambre/Orange Premium */
    --bg-light: #f8fafc;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --white: #ffffff;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* SIDEBAR */
.sidebar {
    width: 280px;
    height: 100vh;
    background: var(--white);
    border-right: 1px solid #e2e8f0;
    position: fixed;
    display: flex;
    flex-direction: column;
    padding: 30px 20px;
    z-index: 100;
}

.sidebar-logo img { width: 160px; margin-bottom: 40px; }

.nav-links { list-style: none; flex-grow: 1; }

.nav-links li { margin-bottom: 8px; }

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 600;
    padding: 12px 15px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

.nav-links a i { font-size: 18px; }

.nav-links a:hover, .nav-links a.active {
    background: rgba(16, 42, 94, 0.05);
    color: var(--primary);
}

.nav-links a.active i { color: var(--accent); }

.sidebar-footer {
    margin-top: auto; /* Pousse le bouton tout en bas */
    padding-top: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.back-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: #64748b; /* Gris ardoise élégant */
    font-size: 13px;
    font-weight: 600;
    padding: 10px 15px;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.back-link-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f5f9;
    border-radius: 8px;
    color: var(--primary);
    transition: all 0.3s ease;
}

/* EFFET AU SURVOL (HOVER) */
.back-link:hover {
    background-color: rgba(16, 42, 94, 0.05); /* Bleu très léger */
    color: var(--primary);
}

.back-link:hover .back-link-icon {
    background-color: var(--primary);
    color: white;
    transform: translateX(-3px); /* Petit mouvement vers la gauche */
}

/* STYLE POUR LE TEXTE */
.back-link span {
    letter-spacing: 0.3px;
}
/* CONTENT AREA */
.content {
    margin-left: 280px;
    padding: 60px 80px;
    max-width: 1100px;
    width: 100%;
}

.main-header { margin-bottom: 60px; animation: fadeInDown 0.8s ease; }

.header-badge {
    display: inline-block;
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 15px;
}

.main-header h1 { font-size: 42px; color: var(--primary); font-weight: 800; }
.main-header h1 span { color: var(--accent); }

.doc-section { margin-bottom: 80px; opacity: 0; transform: translateY(30px); transition: 0.6s ease-out; }
.doc-section.visible { opacity: 1; transform: translateY(0); }

.doc-section h2 { font-size: 24px; margin-bottom: 20px; color: var(--primary); display: flex; align-items: center; gap: 10px; }
.doc-section h2 i { color: var(--accent); }

/* CARDS & BOXES */
.highlight-box {
    background: var(--primary);
    color: var(--white);
    padding: 25px;
    border-radius: 15px;
    margin-top: 25px;
    box-shadow: 0 10px 30px rgba(16, 42, 94, 0.2);
}

.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 30px; }

.f-card {
    background: var(--white);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid #e2e8f0;
    transition: var(--transition);
}

.f-card:hover { transform: translateY(-5px); border-color: var(--accent); }
.f-card i { font-size: 30px; color: var(--primary); margin-bottom: 15px; display: block; }

/* ANIMATIONS */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
    .sidebar { width: 70px; padding: 20px 10px; }
    .sidebar-logo, .nav-links span, .sidebar-footer span { display: none; }
    .content { margin-left: 70px; padding: 40px 20px; }
    .feature-grid { grid-template-columns: 1fr; }
}
.info-alert {
    margin-top: 20px;
    border-left: 4px solid var(--accent);
    background: rgba(245, 158, 11, 0.05);
    padding: 20px;
    border-radius: 12px;
    font-size: 14px;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 15px;
}

.doc-section ul {
    margin-top: 15px;
    padding-left: 20px;
}

.doc-section li {
    margin-bottom: 10px;
    list-style-type: none;
    position: relative;
}

.doc-section li::before {
    content: "→";
    color: var(--accent);
    position: absolute;
    left: -20px;
    font-weight: bold;
}