/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

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

/* Colors */
:root {
    --primary-blue: #4f46e5;
    --light-blue: #f0f9ff;
    --dark-blue: #3730a3;
    --accent-blue: #6366f1;
    --gray-100: #f8fafc;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-600: #475569;
    --gray-800: #1e293b;
    --white: #ffffff;
    --success: #10b981;
    --shadow: rgba(0, 0, 0, 0.1);
}

/* Header */
.header {
    background: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo img {
    height: 50px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--gray-800);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--gray-800);
    margin: 3px 0;
    transition: 0.3s;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: var(--white);
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

/* Premium gradient buttons for expensive courses */
.btn-luxury {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(240, 147, 251, 0.4);
    position: relative;
    overflow: hidden;
}

.btn-luxury::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5576c 0%, #f093fb 100%);
    transition: left 0.3s ease;
    z-index: 0;
}

.btn-luxury:hover::before {
    left: 0;
}

.btn-luxury:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(240, 147, 251, 0.6);
}

.btn-luxury span {
    position: relative;
    z-index: 1;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 40px var(--shadow);
}

/* About Section */
.about {
    padding: 80px 0;
    background: var(--white);
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--gray-800);
    margin-bottom: 2rem;
}

.about-intro {
    text-align: center;
    font-size: 1.2rem;
    color: var(--gray-600);
    max-width: 800px;
    margin: 0 auto 4rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px var(--shadow);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
}

.feature i {
    font-size: 1.8rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.feature h3 {
    font-size: 1.5rem;
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.feature p {
    color: var(--gray-600);
}

/* Free Classes Section */
.free-classes {
    padding: 80px 0;
    background: var(--light-blue);
}

.free-classes h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.free-classes > .container > p {
    text-align: center;
    font-size: 1.2rem;
    color: var(--gray-600);
    max-width: 800px;
    margin: 0 auto 3rem;
}

.classes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.class-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
    position: relative;
}

.class-card::before {
    content: '';
    position: absolute;
    top: 140px;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(79, 70, 229, 0.9);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 2;
}

.class-card::after {
    content: '▶';
    position: absolute;
    top: 140px;
    left: 50%;
    transform: translate(-45%, -50%);
    color: white;
    font-size: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 3;
    pointer-events: none;
}

.class-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.class-card:hover::before,
.class-card:hover::after {
    opacity: 1;
}

.class-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.class-card h3 {
    padding: 1.5rem;
    font-size: 1.5rem;
    color: var(--primary-blue);
    text-align: center;
    margin: 0;
}

.class-card p {
    padding: 0 1.5rem 1.5rem;
    color: var(--gray-600);
    text-align: center;
    margin: 0;
}

/* Courses Section */
.courses {
    padding: 80px 0;
    background: var(--white);
}

.courses h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--gray-800);
    margin-bottom: 3rem;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.course-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow);
    transition: transform 0.3s ease;
}

.course-card:hover {
    transform: translateY(-10px);
}

.course-card.featured {
    border: 3px solid var(--primary-blue);
    position: relative;
}

.course-card.featured::before {
    content: "MAIS POPULAR";
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--primary-blue);
    color: var(--white);
    padding: 8px 40px;
    font-size: 12px;
    font-weight: 600;
    transform: rotate(45deg);
    z-index: 1;
}

/* Premium course cards - only for Combo Elite */
.course-card.luxury {
    background: linear-gradient(145deg, #ffffff 0%, #fdf2f8 100%);
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
    background-image: linear-gradient(145deg, #ffffff 0%, #fdf2f8 100%),
                      linear-gradient(135deg, #f093fb, #f5576c);
    background-origin: border-box;
    background-clip: padding-box, border-box;
}

.course-card.luxury::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 12px;
    padding: 2px;
    background: linear-gradient(135deg, rgba(240, 147, 251, 0.3), rgba(245, 87, 108, 0.3));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: exclude;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    z-index: -1;
}

.course-card.luxury::after {
    content: "PREMIUM";
    position: absolute;
    top: 15px;
    left: 15px;
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: var(--white);
    padding: 6px 12px;
    font-size: 11px;
    font-weight: 700;
    border-radius: 20px;
    z-index: 2;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-card.luxury:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 20px 40px rgba(240, 147, 251, 0.3);
}

/* Premium pricing styles - only for luxury cards */
.course-card.luxury .price {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2.2rem;
    font-weight: 800;
}

.course-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    object-position: center bottom;
}

.course-content {
    padding: 2rem;
}

.course-content h3 {
    font-size: 1.5rem;
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.course-content p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.course-content p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.6;
}

/* Instructor Section */
.instructor {
    padding: 80px 0;
    background: var(--gray-100);
}

.instructor-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3rem;
    align-items: center;
}

.instructor-image img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    object-position: center 20%;
    border-radius: 50%;
    box-shadow: 0 15px 40px var(--shadow);
}

.instructor-text h2 {
    font-size: 2.5rem;
    color: var(--gray-800);
    margin-bottom: 1.5rem;
}

.instructor-text p {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--white);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.social-links a:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .logo-text {
        font-size: 1.2rem;
    }

    .nav-menu {
        position: fixed;
        left: 0;
        top: 82px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: all 0.3s ease;
        box-shadow: 0 10px 27px var(--shadow);
        padding: 0;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        z-index: 500;
    }

    .nav-menu.active {
        max-height: 500px;
        padding: 3rem 0 2rem 0;
        opacity: 1;
        visibility: visible;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .ebook-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .instructor-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .instructor-image img {
        width: 200px;
        height: 200px;
    }

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

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

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

    /* Add extra top padding for sections to account for fixed navbar */
    .about,
    .courses,
    .free-classes,
    .instructor,
    .ebook-section {
        padding-top: 120px;
    }

    .hero {
        padding-top: 140px;
    }
}

@media (max-width: 480px) {
    .logo-text {
        display: none;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .course-card {
        margin: 0 10px;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Animation for cards */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.course-card,
.feature,
.class-card {
    animation: fadeInUp 0.6s ease forwards;
}

/* E-book Section */
.ebook-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
}

.ebook-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    transition: transform 0.3s ease;
}

.ebook-card:hover {
    transform: translateY(-5px);
}

.ebook-badge {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    color: var(--white);
    text-align: center;
    padding: 12px 0;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.ebook-content {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2.5rem;
}

.ebook-image img {
    width: 180px;
    height: 230px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

.ebook-info {
    flex: 1;
}

.ebook-info h2 {
    font-size: 1.8rem;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.ebook-subtitle {
    color: var(--gray-600);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.price-container {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.price-label {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.price {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-blue);
}

.ebook-benefits {
    list-style: none;
    margin-bottom: 2rem;
}

.ebook-benefits li {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    color: var(--gray-700);
    font-size: 0.95rem;
}

.ebook-benefits i {
    color: var(--success);
    font-size: 1rem;
    width: 16px;
}

.btn-ebook {
    width: 100%;
    padding: 14px 0;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 10px;
}

/* Responsive design for ebook section */
@media (max-width: 768px) {
    .ebook-content {
        flex-direction: column;
        text-align: center;
        padding: 2rem 1.5rem;
        gap: 1.5rem;
    }

    .ebook-image img {
        width: 150px;
        height: 190px;
    }

    .ebook-info h2 {
        font-size: 1.6rem;
    }

    .price {
        font-size: 2rem;
    }

    .ebook-benefits {
        text-align: left;
        max-width: 280px;
        margin: 1.5rem auto 2rem;
    }
}

/* Loading animation for images */
img {
    transition: opacity 0.3s ease;
}

img:not([src]) {
    opacity: 0;
}

/* Simple scroll reveal animation */
.scroll-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease, transform 1s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}