/* Reset e configurações base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #c0c0c0;
    --primary-dark: #a0a0a0;
    --secondary-color: #ffffff;
    --accent-color: #ff6b6b;
    --text-primary: #ffffff;
    --text-secondary: #c0c0c0;
    --text-light: #808080;
    --bg-primary: #000000;
    --bg-secondary: #111111;
    --bg-dark: #0a0a0a;
    --bg-card: #1a1a1a;
    --border-color: #333333;
    --grid-color: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.6), 0 8px 10px -6px rgb(0 0 0 / 0.5);
    --gradient-primary: linear-gradient(135deg, #c0c0c0 0%, #ffffff 100%);
    --gradient-secondary: linear-gradient(135deg, #808080 0%, #c0c0c0 100%);
    --gradient-accent: linear-gradient(135deg, #ff6b6b 0%, #ff8e8e 100%);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 20px 20px;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(192, 192, 192, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-logo i {
    font-size: 2rem;
}

.logo-img {
    height: 45px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: all 0.3s ease;
}

.logo-img:hover {
    filter: brightness(0) invert(1) drop-shadow(0 0 10px rgba(192, 192, 192, 0.5));
}

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

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

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    position: relative;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(192, 192, 192, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    opacity: 0.8;
}

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

.hero-content {
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
    border: 2px solid #333333;
    border-radius: 45px;
    padding: 6px;
    box-shadow: 
        0 0 0 1px #444444,
        0 25px 50px rgba(0, 0, 0, 0.9),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: #000000;
    border-radius: 2px;
    z-index: 10;
}

.phone-mockup::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: #000000;
    border-radius: 2px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 50%, #1a1a1a 100%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="0.5" fill="rgba(192,192,192,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    border-radius: 39px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
    padding: 35px 15px 15px;
}

/* Status Bar */
.phone-status-bar {
    position: absolute;
    top: 8px;
    left: 15px;
    right: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.7rem;
    font-weight: 600;
    z-index: 5;
    color: var(--text-primary);
}

.status-left {
    display: flex;
    align-items: center;
    gap: 5px;
}

.status-right {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Home Screen Content */
.phone-home-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    gap: 2rem;
}

.app-icon {
    width: 70px;
    height: 70px;
    background: url('public/esign.jpg') center/cover;
    border-radius: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 
        0 6px 12px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    position: relative;
    animation: appIconFloat 3s ease-in-out infinite;
    border: 1px solid rgba(192, 192, 192, 0.2);
}

.app-icon::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), transparent);
    border-radius: 20px;
    z-index: -1;
}

.app-icon i {
    display: none; /* Esconder o ícone FontAwesome já que agora usamos a imagem */
}

.app-name {
    font-size: 1rem;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    margin-top: 0.5rem;
    color: var(--text-primary);
}

/* Dock */
.phone-dock {
    position: absolute;
    bottom: 15px;
    left: 15px;
    right: 15px;
    height: 60px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 15px;
    backdrop-filter: blur(20px);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.8rem;
    border: 1px solid rgba(192, 192, 192, 0.1);
}

.dock-app {
    width: 40px;
    height: 40px;
    background: var(--gradient-secondary);
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease;
}

.dock-app:hover {
    transform: scale(1.1);
}

.dock-app i {
    font-size: 1.2rem;
    color: var(--bg-primary);
}

/* Animations */
@keyframes appIconFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-5px);
    }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Tutorials Section */
.tutorials {
    padding: 80px 0;
    background: var(--bg-secondary);
    position: relative;
}

.tutorials::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.3;
    pointer-events: none;
}

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

.tutorial-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.tutorial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.tutorial-thumbnail {
    width: 100%;
    height: 200px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.tutorial-thumbnail i {
    font-size: 4rem;
    color: var(--bg-primary);
    z-index: 2;
}

.tutorial-thumbnail::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    z-index: 1;
}

.tutorial-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tutorial-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.tutorial-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.tutorial-link:hover {
    color: var(--primary-dark);
}

/* Products Section */
.products {
    padding: 80px 0;
    background: var(--bg-primary);
    position: relative;
}

.products::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.2;
    pointer-events: none;
}

.product-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
}

.product-header {
    margin-bottom: 2rem;
}

.product-icon {
    width: 70px;
    height: 70px;
    background: transparent;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 1.5rem;
    box-shadow: none;
    overflow: hidden;
}

.product-icon i {
    font-size: 2.5rem;
    color: var(--bg-primary);
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.product-header h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.product-features {
    margin-bottom: 2rem;
}

.product-features ul {
    list-style: none;
    text-align: left;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    color: var(--text-primary);
}

.product-features i {
    color: #10b981;
    font-size: 1.2rem;
}

.product-price {
    margin-bottom: 2rem;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.price-period {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* Payment 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(10px);
}

.modal-content {
    background-color: var(--bg-card);
    margin: 5% auto;
    padding: 0;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease;
    border: 1px solid var(--border-color);
}

.modal-header {
    padding: 2rem 2rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.close {
    color: var(--text-light);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

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

.payment-options {
    padding: 2rem;
}

.payment-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
    text-decoration: none;
    color: inherit;
}

.payment-option:hover {
    border-color: var(--primary-color);
    background: rgba(192, 192, 192, 0.1);
    box-shadow: 0 0 20px rgba(192, 192, 192, 0.2);
}

.payment-option.selected {
    border-color: var(--primary-color);
    background: rgba(192, 192, 192, 0.15);
    box-shadow: 0 0 20px rgba(192, 192, 192, 0.3);
}

.payment-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--bg-primary);
    font-size: 1.5rem;
    box-shadow: 0 0 10px rgba(192, 192, 192, 0.3);
}

.payment-info h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.payment-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: var(--bg-secondary);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.3;
    pointer-events: none;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--bg-primary);
    font-size: 1.5rem;
    box-shadow: 0 0 10px rgba(192, 192, 192, 0.3);
}

.contact-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.contact-form {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(192, 192, 192, 0.3);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

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

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-primary);
    padding: 3rem 0 1rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.2;
    pointer-events: none;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

.footer-logo .logo-img {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: all 0.3s ease;
}

.footer-logo .logo-img:hover {
    filter: brightness(0) invert(1) drop-shadow(0 0 8px rgba(192, 192, 192, 0.4));
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

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

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

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

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--bg-primary);
    font-size: 1.2rem;
    transition: transform 0.3s ease;
    box-shadow: 0 0 10px rgba(192, 192, 192, 0.3);
}

.social-links a:hover {
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    text-align: center;
    color: var(--text-light);
    position: relative;
    z-index: 1;
}

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-card);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-md);
        padding: 2rem 0;
        border-top: 1px solid var(--border-color);
        z-index: 1000;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }
    
    .nav-menu li {
        margin: 0.5rem 0;
    }
    
    .nav-menu a {
        padding: 1rem 2rem;
        display: block;
        font-size: 1.1rem;
    }

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

    .logo-img {
        height: 35px;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }

    .hero-description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem;
    }

    .stat {
        min-width: 100px;
    }

    .phone-mockup {
        width: 200px;
        height: 400px;
        margin: 0 auto;
    }

    .phone-screen {
        padding: 25px 10px 10px;
    }

    .app-icon {
        width: 50px;
        height: 50px;
    }

    .app-icon i {
        font-size: 1.5rem;
    }

    .app-name {
        font-size: 0.9rem;
    }

    .phone-dock {
        height: 45px;
        bottom: 10px;
        left: 10px;
        right: 10px;
        gap: 0.5rem;
    }

    .dock-app {
        width: 30px;
        height: 30px;
    }

    .dock-app i {
        font-size: 1rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-header p {
        font-size: 1rem;
    }

    .tutorials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .tutorial-card {
        padding: 1.5rem;
    }

    .tutorial-thumbnail {
        height: 150px;
    }

    .product-card {
        padding: 2rem 1.5rem;
        margin: 0 15px;
    }

    .product-header h3 {
        font-size: 1.5rem;
    }

    .price {
        font-size: 2.5rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-item {
        padding: 1rem;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1.5rem;
        padding: 0 1rem;
    }

    .footer-logo .logo-img {
        height: 35px;
    }
    
    .footer-section {
        margin-bottom: 1.5rem;
    }
    
    .footer-section h4 {
        font-size: 1.1rem;
        margin-bottom: 0.8rem;
    }
    
    .footer-section ul li {
        margin-bottom: 0.5rem;
    }
    
    .footer-section a {
        font-size: 0.9rem;
        padding: 0.3rem 0;
    }
    
    .footer-bottom {
        text-align: center;
        padding: 1rem;
        font-size: 0.85rem;
    }

    .modal-content {
        margin: 5% auto;
        width: 95%;
        max-width: none;
    }

    .payment-options {
        padding: 1.5rem;
    }

    .payment-option {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-description {
        font-size: 0.9rem;
    }

    .phone-mockup {
        width: 180px;
        height: 360px;
    }

    .phone-screen {
        padding: 20px 8px 8px;
    }

    .app-icon {
        width: 45px;
        height: 45px;
    }

    .app-name {
        font-size: 0.8rem;
    }

    .phone-dock {
        height: 40px;
        gap: 0.3rem;
    }

    .dock-app {
        width: 25px;
        height: 25px;
    }
    
    .footer {
        padding: 2rem 0 1rem;
    }
    
    .footer-content {
        padding: 0 0.5rem;
        gap: 1rem;
    }
    
    .footer-section h4 {
        font-size: 1rem;
        margin-bottom: 0.6rem;
    }
    
    .footer-section a {
        font-size: 0.85rem;
    }
    
    .footer-bottom {
        font-size: 0.8rem;
        padding: 0.8rem;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    .section-header p {
        font-size: 0.9rem;
    }

    .tutorial-card {
        padding: 1rem;
    }

    .tutorial-thumbnail {
        height: 120px;
    }

    .product-card {
        padding: 1.5rem 1rem;
        margin: 0 10px;
    }

    .product-header h3 {
        font-size: 1.3rem;
    }

    .price {
        font-size: 2rem;
    }

    .contact-item {
        padding: 0.8rem;
    }

    .contact-form {
        padding: 1rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .modal-content {
        margin: 2% auto;
        width: 98%;
    }

    .payment-options {
        padding: 1rem;
    }

    .payment-option {
        padding: 0.8rem;
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .payment-icon {
        width: 40px;
        height: 40px;
    }
}

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

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Video Modal Styles */
.video-modal {
    z-index: 3000;
}

.video-modal-content {
    max-width: 900px;
    width: 95%;
    max-height: 90vh;
    overflow-y: auto;
}

.video-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    margin-bottom: 1rem;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
}

.video-info {
    padding: 1rem 0;
}

.video-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* Tutorial Card Enhancements */
.tutorial-thumbnail {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

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

.tutorial-thumbnail:hover img {
    transform: scale(1.05);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
}

.play-button i {
    color: white;
    font-size: 1.5rem;
    margin-left: 3px; /* Ajuste visual para centralizar o ícone */
}

.tutorial-thumbnail:hover .play-button {
    background: var(--primary-color);
    transform: translate(-50%, -50%) scale(1.1);
}

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.tutorial-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.publish-date {
    font-size: 0.8rem;
}

/* Stripe Form Styles */
.stripe-payment-form {
    max-width: 500px;
    margin: 0 auto;
}

.stripe-payment-form .form-group {
    margin-bottom: 1.5rem;
}

.stripe-payment-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.stripe-payment-form input {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.stripe-payment-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.card-element {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: white;
    transition: border-color 0.3s ease;
}

.card-element:focus-within {
    border-color: var(--primary-color);
}

.card-errors {
    color: var(--accent-color);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: none;
}

/* Payment Button Styles */
.pix-button {
    background: linear-gradient(135deg, #00a8ff 0%, #0097e6 100%);
}

.credit-card-button {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
}

.boleto-button {
    background: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
}

.stripe-button {
    background: linear-gradient(135deg, #635bff 0%, #5a52ff 100%);
}

/* Responsive Video Modal */
@media (max-width: 768px) {
    .video-modal-content {
        width: 98%;
        margin: 2% auto;
    }
    
    .video-actions {
        flex-direction: column;
    }
    
    .video-actions .btn {
        width: 100%;
        justify-content: center;
    }
}