/* ========================================
   BOTÕES UNIFICADOS - PADRÃO DEFINITIVO
   ======================================== */

:root {
    /* ==== CORES UNIFICADAS ==== */
    --btn-unified-white: #ffffff;
    --btn-unified-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --btn-unified-shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
    --btn-unified-shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.15);
    --btn-unified-shadow-xl: 0 12px 35px rgba(0, 0, 0, 0.2);
    --btn-unified-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --btn-unified-radius: 0.75rem;
    --btn-unified-space-xs: 0.25rem;
    --btn-unified-space-sm: 0.5rem;
    --btn-unified-space-md: 0.75rem;
    --btn-unified-space-lg: 1rem;
    --btn-unified-space-xl: 1.5rem;
}

/* ==== BASE PADRÃO UNIFICADA ==== */
.btn-unified-base {
    display: inline-flex;
    align-items: center;
    gap: var(--btn-unified-space-md);
    padding: var(--btn-unified-space-lg) var(--btn-unified-space-xl);
    border-radius: var(--btn-unified-radius);
    font-weight: 600;
    font-size: 1.125rem;
    transition: var(--btn-unified-transition);
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
    box-shadow: var(--btn-unified-shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-unified-base:hover {
    transform: translateY(-4px);
    box-shadow: var(--btn-unified-shadow-xl);
    text-decoration: none;
}

/* ==== ANIMAÇÕES DOS ÍCONES ==== */
.btn-unified-base .icon-contextual {
    transition: var(--btn-unified-transition);
}

.btn-unified-base .icon-arrow {
    transition: var(--btn-unified-transition);
}

.btn-unified-base:hover .icon-contextual {
    transform: scale(1.1) rotate(5deg);
}

.btn-unified-base:hover .icon-arrow {
    transform: translateX(3px);
}

/* ==== BOTÃO NOTÍCIAS ==== */
.btn-news-unified {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 50%, #2c3e50 100%);
    color: var(--btn-unified-white);
}

.btn-news-unified:hover {
    background: linear-gradient(135deg, #34495e 0%, #2c3e50 50%, #34495e 100%);
    color: var(--btn-unified-white);
}

/* ==== BOTÃO VÍDEOS ==== */
.btn-videos-unified {
    background: linear-gradient(135deg, #8b9dc3 0%, #5b7280 20%, #4a5568 50%, #5b7280 80%, #8b9dc3 100%);
    color: var(--btn-unified-white);
}

.btn-videos-unified:hover {
    background: linear-gradient(135deg, #a5b4c8 0%, #6b7280 20%, #5b7280 50%, #6b7280 80%, #a5b4c8 100%);
    color: var(--btn-unified-white);
}

/* ==== BOTÕES SECUNDÁRIOS UNIFICADOS ==== */
.btn-secondary-unified {
    display: inline-flex;
    align-items: center;
    gap: var(--btn-unified-space-sm);
    padding: var(--btn-unified-space-md) var(--btn-unified-space-lg);
    border-radius: var(--btn-unified-radius);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--btn-unified-transition);
    border: 2px solid;
    cursor: pointer;
    text-decoration: none;
    box-shadow: var(--btn-unified-shadow-sm);
    background: var(--btn-unified-white);
}

.btn-secondary-unified:hover {
    transform: translateY(-2px);
    box-shadow: var(--btn-unified-shadow-md);
    text-decoration: none;
}

.btn-secondary-unified .icon-secondary {
    transition: var(--btn-unified-transition);
}

.btn-secondary-unified:hover .icon-secondary {
    transform: scale(1.05);
}

/* ==== BOTÃO SECUNDÁRIO NOTÍCIAS ==== */
.btn-secondary-news {
    color: #2c3e50;
    border-color: #2c3e50;
}

.btn-secondary-news:hover {
    background: #2c3e50;
    color: var(--btn-unified-white);
}

/* ==== BOTÃO SECUNDÁRIO VÍDEOS ==== */
.btn-secondary-videos {
    color: #6b7280;
    border-color: #6b7280;
}

.btn-secondary-videos:hover {
    background: linear-gradient(135deg, #4a5568 0%, #64748b 100%);
    color: var(--btn-unified-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(91, 114, 128, 0.3);
}

/* ==== EFEITO SHIMMER (OPCIONAL) ==== */
.btn-unified-base::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-unified-base:hover::before {
    left: 100%;
}

/* ========================================
   RESPONSIVIDADE
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
    .btn-unified-base {
        padding: var(--btn-unified-space-md) var(--btn-unified-space-lg);
        font-size: 1rem;
        gap: var(--btn-unified-space-sm);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .btn-unified-base {
        padding: var(--btn-unified-space-sm) var(--btn-unified-space-md);
        font-size: 0.95rem;
        gap: var(--btn-unified-space-xs);
    }
    
    .btn-unified-base:hover {
        transform: translateY(-2px);
    }
}

/* Mobile Pequeno */
@media (max-width: 480px) {
    .btn-unified-base {
        padding: var(--btn-unified-space-xs) var(--btn-unified-space-sm);
        font-size: 0.9rem;
    }
    
    .btn-unified-base:hover .icon-contextual {
        transform: scale(1.05) rotate(3deg);
    }
    
    .btn-unified-base:hover .icon-arrow {
        transform: translateX(2px);
    }
}