.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: #334155;
    transition: color 0.2s;
}
.nav-link:hover { color: #a66429; }

.mobile-nav-link {
    border-radius: 0.5rem;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    font-weight: 500;
    color: #334155;
}
.mobile-nav-link:hover { background: #faf6ef; }

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    background: #bc813b;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    box-shadow: 0 10px 15px -3px rgba(188, 129, 59, 0.25);
    transition: background 0.2s;
    text-decoration: none;
    border: none;
    cursor: pointer;
}
.btn-primary:hover { background: #a66429; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    border: 2px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.1);
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    backdrop-filter: blur(8px);
    transition: background 0.2s;
    text-decoration: none;
}
.btn-secondary:hover { background: rgba(255,255,255,0.2); }

.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    border: 2px solid #bc813b;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #8a4f23;
    transition: background 0.2s;
    text-decoration: none;
}
.btn-outline:hover { background: #faf6ef; }

.section-heading {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(1.875rem, 4vw, 3rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    color: #0f172a;
}

.section-subheading {
    margin-top: 1rem;
    max-width: 42rem;
    font-size: 1.125rem;
    line-height: 1.75;
    color: #475569;
}

.card {
    border-radius: 1.5rem;
    border: 1px solid #f1f5f9;
    background: #fff;
    padding: 1.5rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    transition: box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
}
.card:hover { box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1); }

.quiz-option {
    display: flex;
    cursor: pointer;
    align-items: flex-start;
    gap: 1rem;
    border-radius: 1rem;
    border: 2px solid #e2e8f0;
    background: #fff;
    padding: 1.25rem;
    text-align: left;
    transition: all 0.2s;
    width: 100%;
}
.quiz-option:hover {
    border-color: #d6ba8b;
    background: rgba(250, 246, 239, 0.5);
}
.quiz-option.selected {
    border-color: #bc813b;
    background: #faf6ef;
    box-shadow: 0 0 0 2px #e7d4b0;
}

.hero-gradient {
    background: linear-gradient(135deg, #0f1419 0%, #1a2332 45%, #2a2418 100%);
}

.prose-dental h2 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: #0f172a;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}
.prose-dental h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #0f172a;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}
.prose-dental p {
    margin-bottom: 1rem;
    line-height: 1.75;
    color: #475569;
}
.prose-dental ul {
    margin-bottom: 1.5rem;
    list-style: disc;
    padding-left: 1.5rem;
    color: #475569;
}
.prose-dental li { margin-bottom: 0.5rem; }
.prose-dental li strong { color: #1e293b; }

.fade-in {
    animation: fadeIn 0.5s ease-out;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}