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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Be Vietnam Pro', 'Segoe UI', Tahoma, Arial, 'Helvetica Neue', Helvetica, sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background-color: #ffffff;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
    color: #666;
}

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

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #333;
    border: 2px solid #e1e5e9;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: #667eea;
    color: #667eea;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 800;
    color: #667eea;
}

.nav-logo i {
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #667eea;
}

.nav-btn {
    background: #667eea;
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    background: #5a6fd8;
    transform: translateY(-1px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
    padding: 2rem 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-size: 14px;
    font-weight: 500;
    color: white;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.gradient-text {
    background: linear-gradient(45deg, #fff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

.hero-buttons .btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.hero-buttons .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

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

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: white;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

/* Dashboard Preview */
.hero-visual {
    position: relative;
}

.dashboard-preview {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.dashboard-header {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.dashboard-controls {
    display: flex;
    gap: 8px;
    margin-right: 1rem;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.red { background: #ff5f57; }
.control.yellow { background: #ffbd2e; }
.control.green { background: #28ca42; }

.dashboard-title {
    font-weight: 600;
    color: #333;
}

.dashboard-content {
    padding: 1.5rem;
}

.device-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.device-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.device-icon {
    font-size: 1.5rem;
}

.device-info {
    flex: 1;
}

.device-name {
    display: block;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.25rem;
}

.device-status {
    font-size: 0.9rem;
    color: #666;
}

.device-status.online {
    color: #28a745;
}

.device-status.checking {
    color: #ffc107;
}

.device-ping {
    font-weight: 600;
    color: #28a745;
}

/* Section Styles */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
}

.section-title {
    font-size: 2.5rem;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.1rem;
    color: #666;
}

/* Features Section */
.features {
    background: #f8fafc;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e1e5e9;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.3rem;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    color: #666;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.feature-list li i {
    color: #28a745;
    margin-right: 0.5rem;
}

/* Tech Specs Section */
.tech-specs {
    background: #1a1a1a;
    color: white;
}

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

.specs-text h2 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.specs-text p {
    color: #ccc;
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.specs-grid {
    display: grid;
    gap: 1.5rem;
}

.spec-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.spec-item i {
    font-size: 2rem;
    color: #667eea;
}

.spec-item h4 {
    color: white;
    margin-bottom: 0.25rem;
}

.spec-item p {
    color: #ccc;
    margin: 0;
    font-size: 0.9rem;
}

/* Terminal */
.terminal {
    background: #2d3748;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    background: #4a5568;
    padding: 1rem;
    text-align: center;
}

.terminal-title {
    color: white;
    font-weight: 600;
}

.terminal-body {
    padding: 1.5rem;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.9rem;
}

.terminal-line {
    margin-bottom: 1rem;
}

.prompt {
    color: #68d391;
    margin-right: 0.5rem;
}

.command {
    color: #e2e8f0;
}

.terminal-output {
    margin-left: 1rem;
}

.status-line {
    margin-bottom: 0.5rem;
}

.status-line.success {
    color: #68d391;
}

.status-line.warning {
    color: #f6e05e;
}

/* Pricing Section */
.pricing {
    background: #f8fafc;
}

.pricing-grid {
    display: flex;
    justify-content: center;
    margin-bottom: 3rem;
}

.pricing-grid .pricing-card {
    max-width: 450px;
    width: 450px;
    padding: 1.5rem;
}

.pricing-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.pricing-card.popular {
    border-color: #667eea;
    transform: scale(1.05);
}

.pricing-card.popular:hover {
    transform: scale(1.05) translateY(-5px);
}

.pricing-card.premium {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.pricing-card.premium h3,
.pricing-card.premium .pricing-price,
.pricing-card.premium .pricing-period {
    color: white;
}

.pricing-card.premium .pricing-features li {
    color: rgba(255, 255, 255, 0.9);
}

.popular-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #667eea;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
}

.currency {
    font-size: 1.2rem;
    font-weight: 600;
    color: #667eea;
}

.amount {
    font-size: 3rem;
    font-weight: 800;
    color: #1a1a1a;
}

.pricing-card.premium .currency,
.pricing-card.premium .amount {
    color: white;
}

.pricing-period {
    color: #666;
    font-size: 0.9rem;
}

.pricing-features ul {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: #666;
}

.pricing-features i {
    color: #28a745;
    font-size: 0.9rem;
}

.pricing-btn {
    width: 100%;
    background: #667eea;
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

.pricing-btn:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
}

.pricing-card.premium .pricing-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.pricing-card.premium .pricing-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.pricing-guarantee {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    font-weight: 500;
}

.pricing-guarantee i {
    color: #ffd700;
}

.pricing-note {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.pricing-note i {
    color: #667eea;
    margin-right: 0.5rem;
}

/* Demo Section */
.demo {
    background: white;
}

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

.demo-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.demo-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.demo-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.demo-feature i {
    color: #667eea;
    font-size: 1.2rem;
}

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

.video-container {
    position: relative;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.video-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-placeholder:hover {
    background: rgba(102, 126, 234, 0.2);
}

.video-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

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

.contact-info h2 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon i {
    font-size: 1.5rem;
    color: white;
}

.contact-details h4 {
    color: white;
    margin-bottom: 0.25rem;
}

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

.contact-link {
    color: white;
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    transition: border-color 0.3s ease;
}

.contact-link:hover {
    border-color: white;
}

/* Contact Form */
.contact-form {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.form h3 {
    color: white;
    margin-bottom: 1.5rem;
    text-align: center;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
}

.form-group select option {
    background: #333;
    color: white;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 2rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 800;
    color: #667eea;
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 1.8rem;
}

.footer-brand p {
    color: #ccc;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    color: white;
    margin-bottom: 1rem;
}

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

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

.footer-column a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #667eea;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
}

.footer-bottom p {
    color: #666;
    margin: 0;
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.fab-btn {
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: all 0.3s ease;
    text-decoration: none;
}

.fab-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
}

.fab-btn i {
    font-size: 1.5rem;
    color: white;
}

/* Responsive Design */
/* CSS để tất cả menu items có style giống nhau - Thêm vào file style.css */

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
        backdrop-filter: blur(25px);
        flex-direction: column;
        align-items: flex-start;
        padding: 6rem 2rem 2rem;
        transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        z-index: 999;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.15);
        border-left: 2px solid rgba(102, 126, 234, 0.3);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    /* Header cho menu */
    .nav-menu::before {
        content: "MENU";
        position: absolute;
        top: 2rem;
        left: 2rem;
        font-size: 1rem;
        font-weight: 800;
        color: #667eea;
        letter-spacing: 1.5px;
    }
    
    /* Tất cả menu links giống nhau */
    .nav-menu .nav-link,
    .nav-menu .nav-btn {
        width: 100%;
        padding: 1.3rem 1.5rem;
        margin-bottom: 1rem;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        border: none;
        border-radius: 15px;
        font-size: 1.1rem;
        font-weight: 600;
        text-decoration: none;
        text-align: center;
        display: block;
        transition: all 0.3s ease;
        box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
        position: relative;
        overflow: hidden;
    }
    
    /* Hover effect cho tất cả */
    .nav-menu .nav-link:hover,
    .nav-menu .nav-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 30px rgba(102, 126, 234, 0.5);
        background: linear-gradient(135deg, #5a6fd8 0%, #6b4d96 100%);
    }
    
    /* Active effect */
    .nav-menu .nav-link:active,
    .nav-menu .nav-btn:active {
        transform: translateY(-1px);
        box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
    }
    
    /* Ripple effect */
    .nav-menu .nav-link::before,
    .nav-menu .nav-btn::before {
        content: "";
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        background: rgba(255, 255, 255, 0.3);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        transition: width 0.6s, height 0.6s;
    }
    
    .nav-menu .nav-link:active::before,
    .nav-menu .nav-btn:active::before {
        width: 300px;
        height: 300px;
    }
    
    /* Hamburger */
    .hamburger {
        display: flex;
        z-index: 1001;
        padding: 10px;
        border-radius: 8px;
        transition: all 0.3s ease;
    }
    
    .hamburger:hover {
        background: rgba(102, 126, 234, 0.1);
    }
    
    /* Responsive adjustments */
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.popular {
        transform: none;
    }
    
    .demo-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 1rem;
    }
}

/* Mobile nhỏ */
@media (max-width: 480px) {
    .nav-menu {
        width: 280px;
        padding: 5rem 1.5rem 2rem;
    }
    
    .nav-menu .nav-link,
    .nav-menu .nav-btn {
        padding: 1.2rem 1.2rem;
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .dashboard-preview {
        margin: 0 -1rem;
    }
    
    .pricing-card {
        margin: 0 -1rem;
    }
    
    .fab {
        bottom: 1rem;
        right: 1rem;
    }
    
    .fab-btn {
        width: 50px;
        height: 50px;
    }
}

/* Hamburger Animation */
.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
    background: #667eea;
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
    background: #667eea;
}

/* Mobile Overlay */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    z-index: 998;
    backdrop-filter: blur(3px);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

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

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

.hero-visual {
    animation: float 6s ease-in-out infinite;
}

/* Utilities */
.text-center {
    text-align: center;
}

.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
/* Hero Images Container */
.hero-images {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Hero Image */
.hero-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    transition: transform 0.3s ease;
    cursor: pointer;
}

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

.dashboard-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
    transition: transform 0.3s ease;
}

.hero-image:hover .dashboard-image {
    transform: scale(1.02);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 20px;
    color: white;
    gap: 0.5rem;
}

.hero-image:hover .image-overlay {
    opacity: 1;
}

.image-overlay i {
    font-size: 2rem;
}

.image-overlay span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Image Modal */
.image-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 2rem;
}

.modal-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    color: white;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    z-index: 10001;
    background: rgba(0, 0, 0, 0.5);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.8);
}

#modalImage {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 10px;
    transition: transform 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.modal-controls {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 10001;
}

.modal-controls button {
    background: rgba(0, 0, 0, 0.7);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-controls button:hover {
    background: rgba(0, 0, 0, 0.9);
}

.modal-controls i {
    font-size: 1rem;
}