/* --- Header --- */
.page-header {
    padding: 160px 0 60px;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-color) 100%);
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    background: linear-gradient(45deg, var(--white), var(--gold-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-header p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* Filtres */
.filters-section {
    padding: 20px 0 40px;
    background: var(--bg-color);
    position: sticky;
    top: 70px; /* Juste sous la navbar */
    z-index: 900;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.filter-group {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--text-muted);
    padding: 10px 20px;
    border-radius: 30px;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.filter-btn:hover, .filter-btn.active {
    border-color: var(--accent-cyan);
    color: var(--white);
    background: rgba(0, 206, 201, 0.1);
}

/* Grille Solutions */
.solutions-grid-section {
    padding: 60px 0 100px;
    background: var(--bg-color);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.solution-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    display: flex; /* Pour flexbox layout interne */
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-purple);
    box-shadow: 0 15px 40px rgba(108, 92, 231, 0.15);
    background: rgba(255,255,255,0.05);
}

/* Animation de bordure lumineuse au survol */
.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.solution-card:hover::before {
    transform: scaleX(1);
}

.card-tag {
    font-family: var(--font-code);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-cyan);
    margin-bottom: 15px;
    display: inline-block;
}

.card-icon {
    margin-bottom: 20px;
    background: rgba(255,255,255,0.05);
    width: 60px;
    height: 60px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.solution-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--white);
}

.solution-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1; /* Pousse le reste vers le bas */
}

.card-specs {
    list-style: none;
    margin-bottom: 25px;
    padding: 0;
}

.card-specs li {
    font-size: 0.85rem;
    color: var(--text-main);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.dot {
    width: 6px;
    height: 6px;
    background: var(--accent-purple);
    border-radius: 50%;
    display: inline-block;
}

.card-btn {
    display: block;
    text-align: center;
    padding: 12px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 6px;
    color: var(--white);
    font-weight: 500;
    transition: 0.3s;
    text-decoration: none;
}

.card-btn:hover {
    background: var(--accent-purple);
    border-color: var(--accent-purple);
    color: var(--white);
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    background: var(--bg-secondary);
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.cta-section h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.cta-section p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .filters-section {
        position: relative;
        top: 0;
    }
    .solutions-grid {
        grid-template-columns: 1fr;
    }
}