/* Global & Typography reset */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    background-attachment: fixed;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

a:hover {
    color: var(--secondary-color);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.narrow-container {
    max-width: 800px;
}

/* Header & Navbar */
.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    box-shadow: 0 4px 30px var(--shadow-glass);
    transition: background var(--transition-speed) ease;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-logo {
    max-height: 50px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.95rem;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #ffffff !important;
    padding: 10px 22px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
}

/* Mobile Menu Panel */
.mobile-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-glass);
    padding: 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    z-index: 999;
    flex-direction: column;
    gap: 20px;
    text-align: center;
}

.mobile-menu a {
    font-weight: 500;
    color: var(--text-color);
    font-size: 1.1rem;
    padding: 10px 0;
}

.mobile-nav-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #ffffff !important;
    padding: 12px;
    border-radius: 50px;
    font-weight: 600;
}

/* Hero Section */
.hero-section {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 80% 20%, rgba(var(--primary-color), 0.05), transparent 50%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: 50px;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin: 0 0 20px 0;
    letter-spacing: -1px;
}

.hero-text h1 span {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text p {
    font-size: 1.15rem;
    color: #666666;
    margin-bottom: 40px;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn-primary {
    background: var(--primary-color);
    color: #ffffff;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(var(--primary-color), 0.3);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, background-color var(--transition-speed) ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--primary-color), 0.4);
    background-color: var(--secondary-color);
    color: #ffffff;
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    border: 2px solid var(--primary-color);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-speed) ease;
}

.btn-secondary:hover {
    background: rgba(var(--primary-color), 0.05);
    transform: translateY(-2px);
}

.hero-image {
    position: relative;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card-pattern {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, rgba(var(--primary-color), 0.1), rgba(var(--secondary-color), 0.1));
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    position: relative;
    animation: morphPattern 15s ease-in-out infinite;
    display: flex;
    justify-content: center;
    align-items: center;
}

.main-illustration {
    font-size: 5.5rem;
    color: var(--primary-color);
    animation: floatIcon 4s ease-in-out infinite;
}

.floating-card {
    position: absolute;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(8px);
    padding: 12px 20px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 32px var(--shadow-glass);
    font-weight: 600;
    font-size: 0.9rem;
}

.floating-card i {
    font-size: 1.1rem;
}

.floating-card.c1 {
    top: 20px;
    left: -40px;
    color: var(--primary-color);
}

.floating-card.c2 {
    bottom: 30px;
    right: -40px;
    color: var(--secondary-color);
}

/* Animations */
@keyframes morphPattern {
    0% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
    50% { border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%; }
    100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
}

@keyframes floatIcon {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Sections Header */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0 0 10px 0;
    position: relative;
    display: inline-block;
    padding-bottom: 12px;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    border-radius: 2px;
}

.section-header p {
    color: #666666;
    margin: 0;
    font-size: 1.05rem;
}

/* Highlights Section */
.highlights-section {
    padding: 80px 0;
    background-color: rgba(var(--primary-color), 0.02);
}

.highlights-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.highlight-card {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 32px var(--shadow-glass);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.highlight-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.card-image {
    position: relative;
    height: 100%;
    min-height: 250px;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
}

.category-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--secondary-color);
    color: #ffffff;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.card-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card-date {
    font-size: 0.85rem;
    color: #888888;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-content h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 0 15px 0;
    line-height: 1.3;
}

.card-content h3 a {
    color: var(--text-color);
}

.card-content h3 a:hover {
    color: var(--primary-color);
}

.card-content p {
    color: #666666;
    margin: 0 0 25px 0;
    font-size: 1rem;
}

.read-more-link {
    font-weight: 600;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: gap var(--transition-speed) ease;
}

.read-more-link:hover {
    color: var(--secondary-color);
    gap: 12px;
}

/* News Cards (Mais Noticias) */
.news-section {
    padding: 80px 0;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px var(--shadow-glass);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.news-card .card-image {
    height: 200px;
    min-height: auto;
}

.news-card .card-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.news-card h3 {
    font-size: 1.25rem;
    margin: 0 0 10px 0;
    line-height: 1.4;
}

.news-card h3 a {
    color: var(--text-color);
}

.news-card h3 a:hover {
    color: var(--primary-color);
}

.news-card p {
    font-size: 0.95rem;
    margin-bottom: 20px;
    flex-grow: 1;
}

.read-more-btn {
    align-self: flex-start;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-color);
    border-bottom: 2px solid transparent;
    padding-bottom: 2px;
}

.read-more-btn:hover {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
}

/* Empty State / No content */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: rgba(var(--primary-color), 0.01);
    border: 2px dashed rgba(var(--primary-color), 0.15);
    border-radius: 12px;
    max-width: 600px;
    margin: 0 auto;
}

.empty-state i {
    font-size: 3rem;
    color: #cccccc;
    margin-bottom: 15px;
}

.empty-state p {
    color: #888888;
    margin: 0;
    font-size: 1.05rem;
}

/* Products Section (Materials de Estudo) */
.products-section {
    padding: 80px 0;
    background-color: rgba(var(--primary-color), 0.02);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: #ffffff;
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px var(--shadow-glass);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.product-image {
    position: relative;
    height: 280px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.price-badge {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: var(--primary-color);
    color: #ffffff;
    padding: 6px 14px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.85rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.product-info {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-info h3 {
    font-size: 1.2rem;
    margin: 0 0 10px 0;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-color);
}

.product-info p {
    font-size: 0.9rem;
    color: #666666;
    margin-bottom: 25px;
    flex-grow: 1;
}

/* Purchase button hotmart link redirect */
.btn-purchase {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #f05323, #ff8a00); /* Premium Orange gradient for Hotmart/Redirection button */
    color: #ffffff !important;
    font-weight: 700;
    padding: 12px 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(240, 83, 35, 0.25);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.btn-purchase:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(240, 83, 35, 0.4);
    background: linear-gradient(135deg, #ff8a00, #f05323);
}

/* Institutional (About Section) */
.about-section {
    padding: 100px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-info h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0 0 20px 0;
}

.lead-text {
    font-size: 1.15rem;
    color: #555555;
    margin-bottom: 35px;
}

.about-contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.contact-item i {
    width: 45px;
    height: 45px;
    background: rgba(var(--primary-color), 0.05);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
}

.contact-item span {
    font-size: 0.8rem;
    color: #888888;
    display: block;
}

.contact-item strong {
    font-size: 1rem;
    color: var(--text-color);
}

.about-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.mvv-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 25px;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 20px;
    box-shadow: 0 8px 32px var(--shadow-glass);
    transition: transform var(--transition-speed) ease;
}

.mvv-card:hover {
    transform: translateX(5px);
}

.mvv-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #ffffff;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.3rem;
}

.mvv-card h3 {
    margin: 0 0 8px 0;
    font-size: 1.2rem;
    font-weight: 700;
}

.mvv-card p {
    margin: 0;
    color: #666666;
    font-size: 0.95rem;
}

/* Newsletter CTA Card Section */
.newsletter-cta-section {
    padding: 60px 0 100px 0;
}

.newsletter-cta-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 24px;
    padding: 50px;
    color: #ffffff;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    box-shadow: 0 12px 40px rgba(var(--primary-color), 0.25);
}

.newsletter-cta-text h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0 0 15px 0;
}

.newsletter-cta-text p {
    margin: 0;
    opacity: 0.9;
    font-size: 1.05rem;
    line-height: 1.5;
}

.newsletter-cta-form .input-group {
    display: flex;
    background: #ffffff;
    padding: 6px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.newsletter-cta-form input[type="email"] {
    flex-grow: 1;
    border: none;
    padding: 15px;
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    border-radius: 8px;
}

.newsletter-cta-form .btn-submit {
    background: var(--primary-color);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    padding: 0 25px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.95rem;
    transition: background-color var(--transition-speed) ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.newsletter-cta-form .btn-submit:hover {
    background-color: var(--secondary-color);
}

.message-box {
    margin-top: 15px;
    padding: 12px 18px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    display: none;
}

.message-box.success {
    background-color: rgba(76, 175, 80, 0.1);
    color: #4CAF50;
    border: 1px solid rgba(76, 175, 80, 0.2);
}

.message-box.error {
    background-color: rgba(244, 67, 54, 0.1);
    color: #f44336;
    border: 1px solid rgba(244, 67, 54, 0.2);
}

.message-box.info {
    background-color: rgba(33, 150, 243, 0.1);
    color: #2196F3;
    border: 1px solid rgba(33, 150, 243, 0.2);
}

/* Post Detail styling */
.post-detail-header-section {
    padding: 60px 0 30px 0;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 25px;
}

.post-meta-tags {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.post-meta-tags .category-badge {
    position: static;
}

.post-meta-tags .post-date {
    font-size: 0.9rem;
    color: #888888;
}

.post-detail-header-section h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin: 0 0 20px 0;
    letter-spacing: -0.5px;
}

.post-summary-lead {
    font-size: 1.25rem;
    color: #555555;
    line-height: 1.5;
    margin: 0;
}

.post-detail-image-section {
    margin-bottom: 40px;
}

.post-banner-wrapper {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
    height: 450px;
}

.post-banner-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-detail-content-section {
    padding-bottom: 60px;
    border-bottom: 1px solid var(--border-glass);
}

.post-body-content {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-color);
}

.post-body-content p {
    margin-bottom: 25px;
}

.post-share-footer {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px dashed rgba(0, 0, 0, 0.1);
}

.post-share-footer span {
    font-weight: 600;
    font-size: 0.95rem;
}

.share-buttons {
    display: flex;
    gap: 12px;
}

.share-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #ffffff !important;
    font-size: 1.1rem;
    transition: transform var(--transition-speed) ease;
}

.share-btn:hover {
    transform: translateY(-3px);
}

.share-btn.whatsapp { background-color: #25d366; }
.share-btn.facebook { background-color: #3b5998; }
.share-btn.twitter { background-color: #1da1f2; }
.share-btn.instagram {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
}

/* Instagram Share Modal */
.instagram-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.instagram-modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.instagram-modal-card {
    background: var(--bg-color, #ffffff);
    border-radius: 16px;
    padding: 30px;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateY(20px);
    transition: transform 0.3s ease;
    text-align: center;
    position: relative;
}

.instagram-modal-overlay.active .instagram-modal-card {
    transform: translateY(0);
}

.instagram-modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color, #333333);
    opacity: 0.6;
    transition: opacity 0.2s;
    padding: 5px;
    line-height: 1;
}

.instagram-modal-close:hover {
    opacity: 1;
}

.instagram-modal-header {
    margin-bottom: 20px;
}

.instagram-modal-icon {
    font-size: 3.2rem;
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 12px;
    display: inline-block;
}

.instagram-modal-header h3 {
    margin: 5px 0;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-color, #333333);
}

.instagram-modal-steps {
    text-align: left;
    margin-bottom: 25px;
    background: rgba(86, 54, 209, 0.05); /* Soft background based on primary color */
    padding: 20px;
    border-radius: 12px;
    border: 1px solid rgba(86, 54, 209, 0.1);
}

.instagram-modal-step {
    display: flex;
    align-items: flex-start;
    margin-bottom: 14px;
    font-size: 0.95rem;
    line-height: 1.4;
}

.instagram-modal-step:last-child {
    margin-bottom: 0;
}

.step-num {
    background: linear-gradient(45deg, #dc2743, #cc2366);
    color: white;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.8rem;
    font-weight: bold;
    margin-right: 12px;
    flex-shrink: 0;
    margin-top: 2px;
    box-shadow: 0 2px 5px rgba(220, 39, 67, 0.3);
}

.step-text {
    color: var(--text-color, #333333);
}

.instagram-modal-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.instagram-modal-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    width: 100%;
    font-size: 0.95rem;
}

.instagram-modal-btn.copy-btn {
    background-color: var(--primary-color, #5636d1);
    color: white !important;
}

.instagram-modal-btn.copy-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

.instagram-modal-btn.copy-btn.copied {
    background-color: #25d366 !important;
}

.instagram-modal-btn.open-btn {
    background-color: transparent;
    color: var(--text-color, #333333) !important;
    border: 1px solid rgba(0, 0, 0, 0.15);
}

.instagram-modal-btn.open-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    transform: translateY(-2px);
}

/* Related Posts Section in details */
.related-posts-section {
    padding: 60px 0 100px 0;
    background-color: rgba(var(--primary-color), 0.01);
}

.section-header-small {
    margin-bottom: 30px;
}

.section-header-small h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0;
}

/* Footer layout */
.main-footer {
    background-color: #111111;
    color: #ffffff;
    padding: 80px 0 0 0;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-col h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0 0 20px 0;
}

.footer-col h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 20px 0;
    position: relative;
    padding-bottom: 8px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--secondary-color);
}

.footer-col p {
    color: #999999;
    font-size: 0.95rem;
    line-height: 1.6;
}

.brand-col .social-links {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}

.brand-col .social-links a {
    width: 40px;
    height: 40px;
    background-color: #222222;
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.1rem;
    transition: all var(--transition-speed) ease;
}

.brand-col .social-links a:hover {
    background-color: var(--primary-color);
    color: #ffffff;
}

.links-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.links-col ul a {
    color: #999999;
    font-size: 0.95rem;
}

.links-col ul a:hover {
    color: #ffffff;
    padding-left: 5px;
}

.footer-newsletter {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

.footer-newsletter input[type="email"] {
    background-color: #222222;
    border: 1px solid #333333;
    padding: 12px;
    border-radius: 8px;
    color: #ffffff;
    outline: none;
    font-family: inherit;
}

.footer-newsletter .btn-primary {
    justify-content: center;
}

.footer-bottom {
    border-top: 1px solid #222222;
    padding: 25px 0;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    font-size: 0.85rem;
    color: #666666;
}

/* Button Details on Home Page card */
.btn-details {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    background: var(--primary-color);
    color: #ffffff !important;
    font-weight: 700;
    padding: 12px 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(86, 54, 209, 0.15);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, background-color var(--transition-speed) ease;
}

.btn-details:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(86, 54, 209, 0.3);
    background-color: var(--secondary-color);
}

/* Study Material / Product Detail styling */
.product-detail-header-section {
    padding: 60px 0 30px 0;
}

.product-detail-header-section h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0 0 15px 0;
    line-height: 1.3;
    color: var(--text-color);
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1.25fr 1.75fr;
    gap: 40px;
    margin-bottom: 60px;
}

.product-detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.product-detail-image-wrapper {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
}

.product-detail-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.product-purchase-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 8px 32px var(--shadow-glass);
    text-align: center;
}

.product-purchase-card .price-label {
    font-size: 0.9rem;
    color: #666666;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 5px;
    display: block;
}

.product-purchase-card .price-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 20px;
    display: block;
}

.product-detail-content-section {
    padding-bottom: 60px;
}

.product-detail-body {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 8px 32px var(--shadow-glass);
}

.product-detail-body h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-top: 0;
    margin-bottom: 20px;
    border-bottom: 2px solid rgba(136, 136, 136, 0.1);
    padding-bottom: 10px;
}

.product-detail-body p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #444444;
    margin-bottom: 20px;
}

/* Outros Materiais / Recommendations Section */
.related-products-section {
    padding: 60px 0 80px 0;
    background-color: rgba(var(--primary-color), 0.01);
    border-top: 1px solid var(--border-glass);
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        height: 300px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .newsletter-cta-card {
        grid-template-columns: 1fr;
        padding: 35px;
        text-align: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .navbar {
        height: 70px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .mobile-menu.active {
        display: flex;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .highlight-card {
        grid-template-columns: 1fr;
    }
    
    .card-image {
        height: 200px;
    }
    
    .card-content {
        padding: 25px;
    }
    
    .card-content h3 {
        font-size: 1.4rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .post-banner-wrapper {
        height: 250px;
    }
    
    .post-detail-header-section h1 {
        font-size: 2.2rem;
    }
    
    .product-detail-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .product-detail-header-section h1 {
        font-size: 2.0rem;
    }
    
    .product-detail-body {
        padding: 25px;
    }
}

/* Materials Page & Category Filters */
.materials-page-header {
    padding: 60px 0 20px 0;
    text-align: center;
    background: radial-gradient(circle at 10% 10%, rgba(var(--primary-color), 0.02), transparent 50%);
}

.materials-page-header h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--text-color);
}

.materials-page-header p {
    font-size: 1.1rem;
    color: #666666;
    max-width: 600px;
    margin: 0 auto;
}

.filters-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin: 30px 0 50px 0;
}

.filter-btn {
    background-color: #f5f6fa;
    color: #666666;
    padding: 10px 22px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-speed) ease;
    border: 1.5px solid transparent;
}

.filter-btn:hover {
    background-color: rgba(90, 54, 209, 0.05); /* Safe fallback using a tint */
    color: var(--primary-color);
}

.filter-btn.active {
    background-color: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(90, 54, 209, 0.25);
}

.product-category-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.03);
    z-index: 2;
}

/* CTA Banner on Homepage */
.materials-cta-banner-section {
    padding: 60px 0;
    background-color: #ffffff;
}

.materials-cta-banner-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    padding: 50px;
    color: #ffffff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 10px 30px rgba(90, 54, 209, 0.2);
    gap: 30px;
}

.materials-cta-banner-text h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0 0 10px 0;
    color: #ffffff;
}

.materials-cta-banner-text p {
    font-size: 1.1rem;
    margin: 0;
    opacity: 0.9;
    max-width: 600px;
}

.materials-cta-banner-btn {
    background: #ffffff;
    color: var(--primary-color);
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: 700;
    transition: all var(--transition-speed) ease;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.materials-cta-banner-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.25);
    background: #f8f9fa;
    color: var(--secondary-color);
}

@media (max-width: 768px) {
    .materials-cta-banner-card {
        flex-direction: column;
        text-align: center;
        padding: 35px 20px;
    }
    
    .materials-page-header h1 {
        font-size: 2.2rem;
    }
}