:root {
    --bg-dark: #E0F2F7; /* Soft Pastel Background oficial do App */
    --bg-card: #ffffff; /* Cards brancos puros e arejados */
    --primary: #136D85; /* Deep Azure (Principal do App) */
    --primary-glow: rgba(19, 109, 133, 0.08); /* 8% de opacidade do Deep Azure */
    --accent: #FFD709; /* Scholarly Gold (Destaque do App) */
    --accent-glow: rgba(255, 215, 9, 0.05); /* 5% de opacidade do Scholarly Gold */
    --teal: #007523; /* Growth Green (Secundário do App) */
    --teal-glow: rgba(0, 117, 35, 0.08); /* 8% de opacidade do Growth Green */
    --text-main: #1A1A1A; /* Preto Suave (Texto do App) */
    --text-muted: #6F6F6F; /* Cinza (Texto Muted do App) */
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
}

/* Sobrescrita de Acessibilidade: Contraste de Texto Secundário (TDAH Friendly) */
.text-muted {
    color: var(--text-muted) !important;
}

/* Glassmorphism Navbar */
.navbar {
    background: rgba(243, 250, 246, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(7, 33, 26, 0.06);
    transition: all 0.3s ease;
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        background: rgba(243, 250, 246, 0.98) !important;
        border-radius: 20px;
        padding: 1.5rem;
        margin-top: 1rem;
        box-shadow: 0 10px 30px rgba(7, 33, 26, 0.06);
        border: 1px solid rgba(7, 33, 26, 0.05);
    }
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.6rem;
    letter-spacing: -0.5px;
    background: linear-gradient(45deg, var(--teal), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link {
    color: var(--text-main) !important; /* Cor escura mineral de contraste máximo */
    font-weight: 600; /* Mais encorpado para foco visual (TDAH Friendly) */
    transition: color 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary) !important; /* Destaque em verde floresta */
}

/* Gradientes e Brilhos Neon */
.neon-text-gradient {
    background: linear-gradient(135deg, var(--teal), var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.btn-glow {
    background: linear-gradient(135deg, var(--primary), var(--teal));
    color: white !important;
    border: none;
    font-weight: 600;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    box-shadow: 0 4px 15px var(--primary-glow);
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(15, 88, 108, 0.3);
    background: linear-gradient(135deg, var(--teal), var(--primary));
    color: white !important;
}

.btn-outline-custom {
    border: 2px solid rgba(7, 33, 26, 0.15);
    color: var(--text-main);
    font-weight: 600;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-outline-custom:hover {
    border-color: var(--teal);
    background: rgba(15, 88, 108, 0.05);
    color: var(--teal);
}

/* Hero Section */
.hero-section {
    padding: 180px 0 100px 0;
    position: relative;
    background: radial-gradient(circle at 80% 20%, var(--teal-glow) 0%, transparent 50%),
                radial-gradient(circle at 10% 80%, rgba(0, 96, 28, 0.04) 0%, transparent 40%);
}

.hero-badge {
    background: rgba(7, 33, 26, 0.04);
    border: 1px solid rgba(7, 33, 26, 0.08);
    color: var(--text-main);
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 1.5rem;
}

/* Cards Premium */
.feature-card {
    background-color: var(--bg-card);
    border: 1px solid rgba(7, 33, 26, 0.06);
    border-radius: 24px;
    padding: 2.5rem;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    overflow: hidden;
    height: 100%;
    box-shadow: 0 4px 20px rgba(7, 33, 26, 0.02);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--teal));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(15, 88, 108, 0.2);
    box-shadow: 0 15px 35px rgba(7, 33, 26, 0.06);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: rgba(15, 88, 108, 0.1);
    color: var(--teal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon-wrapper {
    background: linear-gradient(135deg, var(--primary), var(--teal));
    color: white;
    transform: scale(1.05);
}

/* Metodologia de Ebbinghaus */
.science-section {
    background-color: rgba(243, 250, 246, 0.6);
    border-top: 1px solid rgba(7, 33, 26, 0.04);
    border-bottom: 1px solid rgba(7, 33, 26, 0.04);
    padding: 100px 0;
}

.curva-container {
    background: #ffffff;
    border: 1px solid rgba(7, 33, 26, 0.08);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 8px 30px rgba(7, 33, 26, 0.03);
}

/* Tabela de Preços */
.price-card {
    background-color: var(--bg-card);
    border: 1px solid rgba(7, 33, 26, 0.06);
    border-radius: 28px;
    padding: 3rem 2.5rem;
    position: relative;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    height: 100%;
    box-shadow: 0 4px 20px rgba(7, 33, 26, 0.02);
}

.price-card.featured {
    border: 2px solid var(--primary);
    box-shadow: 0 10px 30px rgba(0, 96, 28, 0.08);
}

.price-card.featured::after {
    content: 'POPULAR';
    position: absolute;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, var(--primary), var(--teal));
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    letter-spacing: 0.5px;
}

.price-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(7, 33, 26, 0.06);
}

/* Footer */
footer {
    border-top: 1px solid rgba(7, 33, 26, 0.06);
    background-color: #ebf5f0;
    padding: 60px 0 30px 0;
}

.footer-logo {
    font-weight: 800;
    font-size: 1.5rem;
    background: linear-gradient(45deg, var(--teal), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

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

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

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

/* Gráfico Conceitual Customizado */
.bar-sem-revisao {
    background-color: #e74c3c;
    box-shadow: 0 0 10px rgba(231, 76, 60, 0.2);
}

.bar-1-revisao {
    background-color: var(--teal);
    opacity: 0.5;
    box-shadow: 0 0 10px rgba(15, 88, 108, 0.15);
}

.bar-2-revisao {
    background-color: var(--teal);
    box-shadow: 0 0 15px rgba(15, 88, 108, 0.3);
}

.bar-3-revisao {
    background: linear-gradient(180deg, var(--accent), var(--primary));
    box-shadow: 0 0 20px rgba(0, 96, 28, 0.4);
}