:root {
    --bg-dark: #0a0a0a;
    --bg-light: #1a1a1a;
    --primary: #ffffff;
    --primary-dark: #cccccc;
    --text-primary: #ffffff;
    --text-secondary: #fffefe;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --font-family: "Urbanist", sans-serif;
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    --shadow-primary: 0 4px 15px rgba(0, 0, 0, 0.2);
    --transition-normal: 0.3s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 25px 25px;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* Header Styles */
header {
    background: rgba(15, 15, 15, 0.9);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 28px;
    font-weight: 800;
    display: flex;
    align-items: center;
    color: var(--text-primary);
}

.logo i {
    margin-right: 10px;
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: var(--text-primary);
    font-weight: 500;
    transition: 0.3s;
    font-size: 15px;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
}

.nav-links a:hover {
    color: var(--primary);
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 180px 0 100px;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
    z-index: 10;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fffefe 0%, #aaa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero h2 {
    font-size: 22px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-weight: 400;
}

.hero p {
    color: var(--text-secondary);
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 15px 30px;
    border-radius: var(--radius-full);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--primary);
    color: #000;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.3);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

/* Apostilas Section */
.apostilas-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-light) 100%);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    color: var(--text-secondary);
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto;
}

/* Category Filter */
.category-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: 500;
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--primary);
    color: #000;
    transform: translateY(-2px);
}

.apostilas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.apostila-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    position: relative;
}

.apostila-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.3);
}

.card-image {
    height: 200px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.apostila-card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: 25px;
}

.card-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
    font-size: 15px;
}

.card-price {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.price {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.price-old {
    font-size: 16px;
    color: var(--text-secondary);
    text-decoration: line-through;
}

.card-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 15px;
    background-color: var(--primary);
    border: none;
    border-radius: var(--radius-md);
    color: #000;
    font-weight: 600;
    transition: all var(--transition-normal);
    text-align: center;
    cursor: pointer;
    font-size: 16px;
    font-family: inherit;
}

.card-button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

/* Staff Section */
.staff-section {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-dark) 100%);
}

.staff-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.staff-member {
    text-align: center;
    max-width: 250px;
}

.staff-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 15px;
    border: 3px solid var(--primary);
    transition: all var(--transition-normal);
}

.staff-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.staff-member:hover .staff-avatar {
    transform: scale(1.05);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.2);
}

.staff-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.staff-role {
    font-size: 16px;
    color: var(--text-secondary);
}

/* Depoimentos Section */
.depoimentos-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-light) 100%);
}

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

.depoimento-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 30px;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
}

.depoimento-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.depoimento-text {
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 20px;
    line-height: 1.6;
}

.depoimento-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.author-info h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

.author-info p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Contato Section */
.contato-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-dark) 100%);
}

.contato-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contato-info h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contato-info > p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 18px;
}

.contato-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.contato-item i {
    font-size: 24px;
    color: var(--primary);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contato-item h3 {
    font-size: 18px;
    margin-bottom: 5px;
}

.contato-item p {
    color: var(--text-secondary);
}

.contato-form {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 30px;
    backdrop-filter: blur(10px);
}

.contato-form h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.contato-form input,
.contato-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    transition: all var(--transition-normal);
}

.contato-form input:focus,
.contato-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
}

.contato-form textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
footer {
    background: linear-gradient(145deg, #0a0a0a, var(--bg-dark));
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.footer-logo i {
    color: var(--primary);
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 25px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.link-group h4 {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.link-group ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.link-group a {
    color: var(--text-secondary);
    transition: color var(--transition-normal);
}

.link-group a:hover {
    color: var(--primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-credits {
    color: var(--text-secondary);
}

.footer-credits strong {
    color: var(--primary);
    font-weight: 600;
}

/* Social Icons */
.social-icons {
    margin-top: 25px;
}

ul {
    list-style: none;
}

.example-2 {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 15px;
}
.example-2 .icon-content {
    position: relative;
}
.example-2 .icon-content .tooltip {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    padding: 6px 10px;
    border-radius: 5px;
    opacity: 0;
    visibility: hidden;
    font-size: 14px;
    transition: all 0.3s ease;
    z-index: 1000;
}
.example-2 .icon-content:hover .tooltip {
    opacity: 1;
    visibility: visible;
    top: -50px;
}
.example-2 .icon-content a {
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    color: #4d4d4d;
    background-color: #fff;
    transition: all 0.3s ease-in-out;
}
.example-2 .icon-content a:hover {
    box-shadow: 3px 2px 45px 0px rgb(0 0 0 / 12%);
}
.example-2 .icon-content a i {
    position: relative;
    z-index: 1;
    font-size: 20px;
}
.example-2 .icon-content a:hover {
    color: white;
}
.example-2 .icon-content a .filled {
    position: absolute;
    top: auto;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: #000;
    transition: all 0.3s ease-in-out;
}
.example-2 .icon-content a:hover .filled {
    height: 100%;
}

.example-2 .icon-content a[data-social="github"] .filled,
.example-2 .icon-content a[data-social="github"] ~ .tooltip {
    background-color: #333;
}

.example-2 .icon-content a[data-social="discord"] .filled,
.example-2 .icon-content a[data-social="discord"] ~ .tooltip {
    background-color: #7289da;
}

.example-2 .icon-content a[data-social="instagram"] .filled,
.example-2 .icon-content a[data-social="instagram"] ~ .tooltip {
    background: linear-gradient(
        45deg,
        #405de6,
        #5b51db,
        #b33ab4,
        #c135b4,
        #e1306c,
        #fd1f1f
    );
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--bg-light);
    margin: 5% auto;
    padding: 30px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition-normal);
}

.close-modal:hover {
    color: var(--primary);
}

.modal-content h2 {
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.compra-info {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.compra-info h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.compra-info p {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.compra-preco .price {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
}

.compra-metodos {
    margin-bottom: 30px;
}

.compra-metodos h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.metodo-pagamento {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.metodo-pagamento.active {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

.metodo-pagamento:hover {
    background: rgba(255, 255, 255, 0.1);
}

.compra-pix h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.compra-pix p {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.pix-code {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 15px;
    margin-bottom: 20px;
    font-family: monospace;
    font-size: 1.1rem;
}

.btn-copy {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
    transition: color var(--transition-normal);
}

.btn-copy:hover {
    color: var(--primary);
}

.pix-instruction {
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.whatsapp-btn {
    width: 100%;
    justify-content: center;
}

/* Responsive Design */
@media (max-width: 968px) {
    .nav-links {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .contato-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 150px 0 80px;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .apostilas-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .staff-grid {
        flex-direction: column;
        align-items: center;
    }

    .depoimentos-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .btn {
        padding: 12px 24px;
    }

    .modal-content {
        padding: 20px;
        margin: 10% auto;
        width: 95%;
    }
}