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

:root {
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 1rem;
    
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--gray-600);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

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

.btn-secondary {
    background-color: var(--gray-200);
    color: var(--gray-800);
}

.btn-secondary:hover {
    background-color: var(--gray-300);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

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

.nav-menu a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-menu a[href*="backoffice"] {
    color: var(--primary-color);
    font-weight: 600;
    position: relative;
}

.nav-menu a[href*="backoffice"]:hover {
    color: var(--primary-dark);
}

.nav-menu a[href*="backoffice"]::after {
    content: "↗";
    margin-left: 0.25rem;
    font-size: 0.75rem;
    opacity: 0.7;
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--gray-700);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 10rem 0 6rem;
    background: var(--white);
    color: var(--gray-800);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 0 1rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    color: var(--gray-900);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--gray-600);
}

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    background: linear-gradient(145deg, #2c3e50, #34495e);
    border-radius: 30px;
    padding: 20px;
    box-shadow: var(--shadow-lg);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background-color: var(--white);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
}

.app-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.app-content {
    flex: 1;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background-color: var(--gray-100);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.menu-item:hover {
    background-color: var(--gray-200);
    transform: translateX(5px);
}

.menu-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* Features Section */
.features {
    padding: 6rem 0;
    background-color: var(--gray-100);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.25rem;
    color: var(--gray-600);
}

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

.feature-card {
    background-color: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.feature-list {
    list-style: none;
    margin-top: 1rem;
}

.feature-list li {
    padding: 0.5rem 0;
    color: var(--gray-600);
    position: relative;
    padding-left: 1.5rem;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

/* Download Section */
.download {
    padding: 6rem 0;
    background-color: var(--white);
}

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

.download-info h2 {
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.download-details {
    margin: 2rem 0;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--gray-600);
}

.detail-item i {
    color: var(--success-color);
}

.download-instructions {
    background-color: var(--gray-100);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-top: 2rem;
}

.download-instructions h4 {
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.download-instructions ol {
    padding-left: 1.5rem;
}

.download-instructions li {
    margin-bottom: 0.5rem;
    color: var(--gray-600);
}

.download-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.app-icon {
    width: 80px;
    height: 80px;
    background-color: var(--white);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1rem;
}

.download-card h3 {
    margin-bottom: 0.5rem;
}

.download-card p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--white);
    color: var(--primary-color);
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    margin-bottom: 2rem;
}

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

.download-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Demo Section */
.demo {
    padding: 6rem 0;
    background-color: var(--gray-100);
}

.demo-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.demo-item {
    text-align: center;
}

.demo-image {
    margin-bottom: 1.5rem;
}

.phone-frame {
    width: 250px;
    height: 500px;
    background: linear-gradient(145deg, #2c3e50, #34495e);
    border-radius: 25px;
    padding: 15px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
}

.screen {
    width: 100%;
    height: 100%;
    background-color: var(--white);
    border-radius: 15px;
    overflow: hidden;
}

.app-screen {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-screen.login .app-header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.login-form {
    flex: 1;
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.login-form input {
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
}

.login-btn {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    margin-top: 1rem;
}

.app-screen.dashboard .app-header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.dashboard-content {
    flex: 1;
    padding: 1rem;
}

.menu-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.menu-grid .menu-item {
    padding: 0.75rem;
    background-color: var(--gray-100);
    border-radius: var(--border-radius);
    text-align: center;
    font-size: 0.75rem;
}

.menu-grid .menu-item.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.menu-grid .menu-item i {
    display: block;
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.app-screen.payments .app-header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.payment-form {
    flex: 1;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.payment-form select,
.payment-form input {
    padding: 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
}

.save-btn {
    background-color: var(--success-color);
    color: var(--white);
    border: none;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    margin-top: 1rem;
}

.demo-item h4 {
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.demo-item p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background-color: var(--white);
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.contact-details h4 {
    color: var(--gray-800);
    margin-bottom: 0.25rem;
}

.contact-details p {
    color: var(--gray-600);
    margin-bottom: 0;
}

.contact-form {
    background-color: var(--gray-100);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
}

.contact-form h3 {
    color: var(--gray-800);
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

/* Footer */
.footer {
    background-color: var(--gray-900);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

.footer-section p {
    color: var(--gray-400);
    margin-bottom: 1.5rem;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition);
}

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

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

.social-links a {
    width: 40px;
    height: 40px;
    background-color: var(--gray-700);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 1rem;
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-400);
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 1rem 1.5rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .demo-gallery {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 1rem 1rem;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 8rem 0 3rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .phone-mockup {
        width: 200px;
        height: 400px;
    }
    
    .features,
    .download,
    .demo,
    .contact {
        padding: 4rem 0;
    }
}

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

.feature-card,
.demo-item,
.contact-item {
    animation: fadeInUp 0.6s ease-out;
}

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

/* Focus Styles */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Loading States */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .nav-toggle,
    .hero-buttons {
        display: none;
    }
    
    .hero {
        background: none;
        color: var(--gray-800);
    }
    
    .container {
        max-width: none;
    }
}