/* landing.css - Tema Dark Monocromático de Alta Conversão */
:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #121212;
    --text-primary: #ffffff;
    --text-muted: #8e8e93;
    --border-color: #262626;
}

body {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    overflow-x: hidden;
}

.hero-section {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.text-muted-custom {
    color: var(--text-muted) !important;
}

.card-custom {
    background-color: var(--bg-card) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.card-custom:hover {
    transform: translateY(-4px);
    border-color: #ffffff !important;
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.05);
}

.btn-premium {
    background-color: #ffffff !important;
    color: #000000 !important;
    font-weight: 700 !important;
    border: 1px solid #ffffff !important;
    border-radius: 50px;
    transition: all 0.2s ease-in-out;
}

.btn-premium:hover {
    background-color: #000000 !important;
    color: #ffffff !important;
    border-color: #ffffff !important;
}

.section-accent {
    background-color: var(--bg-secondary) !important;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.icon-mono {
    color: #ffffff !important;
    font-size: 2.5rem;
}

/* Customização Monocromática do Accordion do Bootstrap */
.accordion-button::after {
    filter: invert(1);
}
.accordion-button:not(.collapsed) {
    color: #ffffff !important;
    background-color: transparent !important;
}

/* Utilitários Extras para Tipografia Avançada */
.tracking-wider {
    letter-spacing: 0.12em;
}
.fw-black {
    font-weight: 900;
}

footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

/* Otimizações Responsivas e Mobile-First */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2.1rem !important;
        line-height: 1.2;
    }
    .hero-section {
        padding: 50px 0 !important;
    }
    .style-sub {
        font-size: 1.05rem !important;
    }
    .display-5 {
        font-size: 1.8rem !important;
    }
}