/* ========================================
   STYLES POUR LES SECTIONS LETTRES SEO
   ======================================== */

/* Section principale des lettres */
.letter-section {
    padding: 6rem 0;
    background: var(--color-white);
    display: none; /* Caché par défaut */
    position: relative;
}

/* Afficher la section quand elle a la classe 'active' */
.letter-section.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Bouton fermer */
.letter-close-btn {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.letter-close-btn:hover {
    background: var(--color-primary);
    transform: rotate(90deg);
}

.letter-close-btn:hover svg {
    stroke: var(--color-white);
}

.letter-close-btn svg {
    stroke: var(--color-primary);
    transition: stroke 0.3s ease;
}

.letter-section.letter-support {
    background: var(--color-light-gray);
}

/* En-tête de la lettre */
.letter-header {
    text-align: center;
    margin-bottom: 3rem;
}

.letter-badge {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 15px rgba(26, 77, 143, 0.2);
}

.letter-badge.support-badge {
    background: var(--color-accent);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.2);
}

.letter-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--color-primary);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.letter-subtitle {
    font-size: 1.2rem;
    color: var(--color-gray);
    font-weight: 400;
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Boutons d'action */
.letter-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.letter-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.letter-actions .btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

.letter-actions .btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 77, 143, 0.3);
}

.letter-actions .btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.letter-actions .btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* Contenu de la lettre */
.letter-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    line-height: 1.8;
    font-size: 1.05rem;
    color: var(--color-dark);
}

.letter-support .letter-content {
    background: var(--color-white);
}

/* Introduction de la lettre */
.letter-intro {
    margin-bottom: 2.5rem;
}

.letter-intro p:first-child {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.letter-intro p:last-child {
    font-size: 1.1rem;
    line-height: 1.8;
}

/* Corps de la lettre - texte continu */
.letter-body {
    margin-bottom: 2.5rem;
}

.letter-body p {
    margin-bottom: 1.5rem;
    text-align: justify;
    line-height: 1.8;
}

/* Blocs de section dans la lettre */
.letter-section-block {
    margin-bottom: 2.5rem;
}

.letter-section-block h2 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: var(--color-primary);
    font-weight: 700;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--color-accent);
}

.letter-section-block p {
    margin-bottom: 1rem;
    text-align: justify;
}

/* Liste dans les lettres */
.letter-list {
    list-style: none;
    padding-left: 0;
    margin: 1.5rem 0;
}

.letter-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    line-height: 1.7;
}

.letter-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
    font-size: 1.3rem;
}

/* Clôture de la lettre */
.letter-closing {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--color-light-gray);
}

.letter-closing p {
    margin-bottom: 1.2rem;
}

.letter-signature {
    margin-top: 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1.6;
}

.letter-signature strong {
    font-size: 1.3rem;
    display: block;
    margin-bottom: 0.3rem;
}

/* Animation au scroll */
.letter-content {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .letter-section {
        padding: 3rem 0;
    }
    
    .letter-close-btn {
        top: 1rem;
        right: 1rem;
        width: 36px;
        height: 36px;
    }
    
    .letter-title {
        font-size: 1.8rem;
        padding: 0 1rem;
    }
    
    .letter-subtitle {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    .letter-actions {
        flex-direction: column;
        padding: 0 1rem;
    }
    
    .letter-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .letter-content {
        padding: 2rem 1.5rem;
        font-size: 1rem;
    }
    
    .letter-section-block h2 {
        font-size: 1.4rem;
    }
    
    .letter-section-block p {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .letter-close-btn {
        width: 32px;
        height: 32px;
    }
    
    .letter-title {
        font-size: 1.5rem;
    }
    
    .letter-badge {
        font-size: 0.75rem;
        padding: 0.5rem 1.2rem;
    }
    
    .letter-content {
        padding: 1.5rem 1rem;
        border-radius: 8px;
    }
    
    .letter-list li {
        padding-left: 1.5rem;
        font-size: 0.95rem;
    }
}

/* Amélioration de l'accessibilité */
.letter-actions .btn:focus,
.letter-actions .btn:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .letter-section {
        padding: 2rem 0;
    }
    
    .letter-actions {
        display: none;
    }
    
    .letter-content {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}