/* Back Link Utility */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: var(--space-s) 0;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--color-text-dim);
    text-decoration: none;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: var(--color-primary);
}

.btn-full {
    width: 100%;
}

/* ==========================================================================
   Validação Comercial & Posicionamento Estratégico B2B (O Ciclo Invisível)
   Abordagem: Mobile First com progressão responsiva para Desktop
   ========================================================================== */
.validation-commercial-section {
    padding: var(--space-m, 3rem) 0;
    position: relative;
    overflow: visible;
}

.validation-commercial__box {
    background: linear-gradient(135deg, #070d1f 0%, #111827 50%, #1e293b 100%);
    border: 1px solid rgba(59, 130, 246, 0.35);
    border-radius: 16px;
    padding: 1.5rem 1.25rem;
    color: #f8fafc;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35), 0 0 30px rgba(59, 130, 246, 0.08);
    position: relative;
    overflow: hidden;
}

.validation-commercial__box::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -30%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.validation-commercial__header {
    margin-bottom: 1.25rem;
    position: relative;
    z-index: 2;
}

.validation-commercial__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.4);
    padding: 0.35rem 0.75rem;
    border-radius: 3px;
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.15);
}

.validation-commercial__title {
    font-size: 1.35rem;
    font-weight: 900;
    line-height: 1.25;
    color: #ffffff;
    margin: 0 0 0.85rem 0;
    letter-spacing: -0.02em;
}

.validation-commercial__lead {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #cbd5e1;
    max-width: 850px;
    margin-bottom: 1.75rem;
    position: relative;
    z-index: 2;
}

.validation-commercial__lead strong {
    color: #60a5fa;
    font-weight: 700;
}

/* Ciclo Visual — Mobile First (Empilhado verticalmente no mobile) */
.validation-cycle {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    gap: 0.5rem;
    background: rgba(15, 23, 42, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.25rem 1rem;
    border-radius: 12px;
    margin-bottom: 1.75rem;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 2;
}

.cycle-step {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    color: #94a3b8;
    font-weight: 600;
    font-size: 0.88rem;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.cycle-step--active {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    color: #ffffff;
    font-weight: 800;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.5);
    transform: scale(1.03);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.cycle-num {
    font-size: 0.72rem;
    opacity: 0.75;
    font-family: monospace;
}

.cycle-arrow {
    color: #475569;
    font-weight: 800;
    font-size: 1.1rem;
    transform: rotate(90deg);
    margin: 0.1rem 0;
}

/* Cards de Proposta — Mobile First (1 coluna no mobile) */
.validation-commercial__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    position: relative;
    z-index: 2;
}

.validation-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 1.25rem;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.validation-card:hover {
    transform: translateY(-3px);
    border-color: rgba(59, 130, 246, 0.6);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

.validation-card strong {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: #60a5fa;
    margin-bottom: 0.5rem;
    font-weight: 800;
}

.validation-card p {
    font-size: 0.85rem;
    color: #94a3b8;
    line-height: 1.6;
    margin: 0;
}

/* Destaque Estatístico Gartner/Edelman — Mobile First */
.validation-stat-box {
    margin-top: 1.5rem;
    padding: 1.15rem 1.25rem;
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid #3b82f6;
    border-radius: 0 10px 10px 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: #e2e8f0;
    line-height: 1.5;
    position: relative;
    z-index: 2;
}

.validation-stat-box strong {
    color: #60a5fa;
}

/* ==========================================================================
   Progressão Desktop (Tablet & Desktop - min-width)
   ========================================================================== */
@media (min-width: 768px) {
    .validation-commercial-section {
        padding: var(--space-l, 4.5rem) 0;
    }
    .validation-commercial__box {
        padding: 2.5rem 3rem;
        border-radius: 20px;
    }
    .validation-commercial__title {
        font-size: 1.85rem;
    }
    .validation-commercial__lead {
        font-size: 1.05rem;
        margin-bottom: 2.25rem;
    }
    .validation-cycle {
        flex-direction: row;
        flex-wrap: nowrap;
        align-items: center;
        justify-content: space-between;
        padding: 1.5rem 2rem;
        gap: 0.75rem;
        margin-bottom: 1.75rem;
    }
    .cycle-step {
        font-size: 0.88rem;
        padding: 0.5rem 0.75rem;
        flex: none;
        min-width: auto;
    }
    .cycle-arrow {
        display: block;
        transform: rotate(0deg);
        margin: 0;
    }
    .validation-commercial__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
    .validation-card {
        padding: 1.5rem;
    }
    .validation-card strong {
        font-size: 1rem;
    }
    .validation-card p {
        font-size: 0.88rem;
    }
    .validation-stat-box {
        flex-direction: row;
        align-items: center;
        gap: 1.25rem;
        padding: 1.25rem 1.75rem;
        font-size: 0.92rem;
        margin-top: 1.5rem;
    }
}