/* =================================================================
   3. CABEÇALHOS E SEÇÕES DE DESTAQUE
   ================================================================= */
.hero-section {
    background: var(--bg-surface);
    border: 1px solid var(--border-highlight);
    box-shadow: var(--shadow-md);
    color: var(--text-main);
    padding: 4rem 0;
    margin-bottom: 3rem;
    border-radius: 0 0 40px 40px;
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary), var(--brand-danger));
    opacity: 0.5;
}

:root.dark-mode .hero-section {
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary), var(--brand-danger));
    opacity: 0.8;
}

.fase-header {
    background: linear-gradient(90deg, var(--bg-container), var(--bg-main));
    border-left: 4px solid transparent;
    border-image: linear-gradient(to bottom, var(--brand-primary), var(--brand-secondary)) 1;
    color: var(--text-main);
    padding: 15px 25px;
    border-radius: 12px;
    margin: 35px 0 20px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-subtle);
}

:root.dark-mode .fase-header {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.fase-header h4 {
    margin: 0;
    font-weight: 600;
}