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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #0f172a;
    --light-bg: #f8fafc;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1e293b 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
}

.logo-icon {
    font-size: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

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

.cta-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s;
}

.cta-button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1e293b 50%, #2d3748 100%);
    color: white;
    padding: 6rem 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    min-height: calc(100vh - 70px);
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.3rem;
    color: #cbd5e1;
    margin-bottom: 2rem;
}

/* Search Container */
.search-container {
    position: relative;
    margin-bottom: 2rem;
}

.search-bar {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    border: 2px solid transparent;
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.search-bar::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.search-bar:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.search-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-color);
    border: none;
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 0.4rem;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.3s;
}

.search-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-50%) scale(1.05);
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(30, 41, 59, 0.95);
    border: 1px solid var(--primary-color);
    border-radius: 0.5rem;
    margin-top: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
    display: none;
    backdrop-filter: blur(10px);
}

.search-results.active {
    display: block;
}

.search-result-item {
    padding: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
    transition: background 0.2s;
    color: #cbd5e1;
}

.search-result-item:hover {
    background: rgba(99, 102, 241, 0.2);
}

.search-result-item:last-child {
    border-bottom: none;
}

/* Hero Buttons */
.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.9rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

/* Blockchain Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.blockchain-visual {
    display: flex;
    gap: 1rem;
    align-items: center;
    perspective: 1000px;
}

.block {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 2rem;
    border-radius: 0.5rem;
    color: white;
    font-weight: bold;
    min-width: 100px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: float 3s ease-in-out infinite;
}

.block-1 {
    animation-delay: 0s;
}

.block-2 {
    animation-delay: 0.2s;
}

.block-3 {
    animation-delay: 0.4s;
}

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

.connector {
    font-size: 2rem;
    color: var(--primary-color);
}

/* Features Section */
.features {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

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

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 0.8rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
    border-top: 4px solid var(--primary-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.2);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
}

/* Stats Section */
.stats {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* About Section */
.about {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

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

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
}

.tech-stack {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.tech-item {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 2rem;
    border-radius: 0.5rem;
    text-align: center;
    font-weight: bold;
}

/* Contact Section */
.contact {
    background: var(--light-bg);
    padding: 5rem 2rem;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Footer */
.footer {
    background: var(--dark-bg);
    color: white;
    padding: 3rem 2rem 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
}

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

.footer-section a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
}

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

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: white;
    border-radius: 3px;
    transition: all 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

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

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

/* Responsive Design - Tablets (768px and below) */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }

    .hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, var(--dark-bg) 0%, #1e293b 100%);
        flex-direction: column;
        gap: 0;
        padding: 1rem 0;
        z-index: 99;
        border-bottom: 1px solid var(--primary-color);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 1rem 2rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-links .cta-button {
        margin: 1rem 2rem;
        width: calc(100% - 4rem);
    }

    .logo {
        gap: 0.3rem;
        font-size: 1.2rem;
    }

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

    .hero {
        grid-template-columns: 1fr;
        padding: 3rem 1.5rem;
        min-height: auto;
        gap: 2rem;
    }

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

    .hero-content p {
        font-size: 1rem;
    }

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

    .btn {
        width: 100%;
        padding: 1rem;
    }

    .search-bar {
        padding: 0.8rem;
        font-size: 1rem;
    }

    .search-btn {
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }

    .features {
        padding: 3rem 1.5rem;
    }

    .features h2,
    .about h2,
    .contact h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

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

    .feature-card {
        padding: 1.5rem;
    }

    .feature-icon {
        font-size: 2.5rem;
    }

    .feature-card h3 {
        font-size: 1.2rem;
    }

    .stats {
        padding: 2rem 1.5rem;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 0.95rem;
    }

    .about {
        padding: 3rem 1.5rem;
    }

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

    .tech-stack {
        grid-template-columns: 1fr;
    }

    .tech-item {
        padding: 1.5rem;
    }

    .contact {
        padding: 3rem 1.5rem;
    }

    .contact-form {
        max-width: 100%;
    }

    .contact-form input,
    .contact-form textarea {
        padding: 0.8rem;
        font-size: 16px;
    }

    .blockchain-visual {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .block {
        padding: 1.5rem;
        min-width: 80px;
        font-size: 0.9rem;
    }

    .connector {
        font-size: 1.5rem;
    }

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

    .footer {
        padding: 2rem 1.5rem 1rem;
    }
}

/* Mobile Phones (480px and below) */
@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }

    .logo {
        font-size: 1rem;
    }

    .logo-icon {
        font-size: 1.3rem;
    }

    .hero {
        padding: 2rem 1rem;
        min-height: auto;
    }

    .hero-content h1 {
        font-size: 1.5rem;
        margin-bottom: 0.8rem;
    }

    .hero-content p {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }

    .search-bar {
        padding: 0.7rem;
        font-size: 0.95rem;
    }

    .search-bar::placeholder {
        font-size: 0.85rem;
    }

    .search-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }

    .search-results {
        max-height: 250px;
        font-size: 0.95rem;
    }

    .search-result-item {
        padding: 0.8rem;
    }

    .btn {
        padding: 0.8rem;
        font-size: 0.95rem;
    }

    .features {
        padding: 2rem 1rem;
    }

    .features h2,
    .about h2,
    .contact h2,
    .stats {
        font-size: 1.5rem;
    }

    .feature-card {
        padding: 1.2rem;
    }

    .feature-icon {
        font-size: 2rem;
        margin-bottom: 0.8rem;
    }

    .feature-card h3 {
        font-size: 1.1rem;
        margin-bottom: 0.4rem;
    }

    .feature-card p {
        font-size: 0.9rem;
    }

    .stats {
        padding: 1.5rem 1rem;
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }

    .stat-item {
        padding: 1.5rem;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .stat-label {
        font-size: 0.85rem;
    }

    .about {
        padding: 2rem 1rem;
    }

    .about-text p {
        margin-bottom: 1rem;
        font-size: 0.95rem;
    }

    .tech-stack {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .tech-item {
        padding: 1.2rem;
        font-size: 0.95rem;
    }

    .contact {
        padding: 2rem 1rem;
    }

    .contact-form {
        gap: 1rem;
    }

    .contact-form input,
    .contact-form textarea {
        padding: 0.7rem;
        font-size: 16px;
        border-radius: 0.4rem;
    }

    .block {
        padding: 1.2rem;
        min-width: 70px;
        font-size: 0.85rem;
    }

    .connector {
        font-size: 1.2rem;
    }

    .footer {
        padding: 1.5rem 1rem;
    }

    .footer-section h4 {
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }

    .footer-bottom {
        padding-top: 1rem;
        font-size: 0.85rem;
    }

    /* Improved touch targets for mobile */
    .btn,
    .cta-button,
    .search-btn {
        min-height: 44px;
        touch-action: manipulation;
    }

    .nav-links a {
        padding: 0.8rem 1.5rem;
    }
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card {
    animation: slideIn 0.6s ease-out;
}