/* ========================================
   CSS Variables - Cyberpunk Dark Theme
   ======================================== */
:root {
    --primary-color: #00f3ff;
    --secondary-color: #00d4aa;
    --accent-color: #00b8a0;
    --bg-dark: #0a0e27;
    --bg-darker: #050816;
    --bg-card: #141b3d;
    --text-primary: #ffffff;
    --text-secondary: #b8c5d6;
    --border-color: rgba(0, 243, 255, 0.2);
    --glow-color: rgba(0, 243, 255, 0.3);
    --error-color: #ff4757;
    --success-color: #00d4aa;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

a {
    text-decoration: none;
    color: inherit;
}

/* ========================================
   Container & Layout
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 243, 255, 0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
    font-weight: 500;
}

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

.nav-cta {
    padding: 0.5rem 1.5rem;
    background: var(--primary-color);
    border-radius: 25px;
    color: var(--bg-dark) !important;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--glow-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 184, 160, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 243, 255, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-subtitle span {
    color: var(--primary-color);
    font-weight: 600;
}

.cta-button {
    display: inline-block;
    padding: 1rem 3rem;
    background: var(--primary-color);
    color: var(--bg-dark);
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 30px var(--glow-color);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px var(--glow-color);
}

/* ========================================
   Features Section
   ======================================== */
.features {
    background: var(--bg-darker);
}

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

.feature-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 30px rgba(0, 243, 255, 0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

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

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   Use Cases Section
   ======================================== */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.use-case-card {
    background: linear-gradient(135deg, rgba(0, 243, 255, 0.05), rgba(0, 184, 160, 0.05));
    padding: 2.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.use-case-card:hover {
    transform: translateY(-5px);
    background: linear-gradient(135deg, rgba(0, 243, 255, 0.1), rgba(0, 184, 160, 0.1));
    border-color: var(--secondary-color);
}

.use-case-card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.use-case-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   Blockchains Section
   ======================================== */
.blockchains {
    background: var(--bg-darker);
}

.blockchains-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.blockchain-item {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    text-align: center;
    position: relative;
}

.blockchain-item.active {
    border-color: var(--success-color);
}

.blockchain-item.roadmap {
    border-color: var(--accent-color);
}

.blockchain-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.blockchain-item.active .blockchain-badge {
    background: rgba(0, 212, 170, 0.2);
    color: var(--success-color);
}

.blockchain-item.roadmap .blockchain-badge {
    background: rgba(0, 184, 160, 0.2);
    color: var(--accent-color);
}

.blockchain-item h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.blockchain-item p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   About Section
   ======================================== */
.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.about-mission {
    color: var(--text-primary);
    font-weight: 500;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    background: var(--bg-darker);
}

.contact-header {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 1rem;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-card);
    padding: 3rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.9rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 243, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    font-family: inherit;
}

.submit-button {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: var(--bg-dark);
    font-weight: 700;
    font-size: 1.1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.submit-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--glow-color);
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    display: block;
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.form-message.error {
    display: block;
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-darker);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

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

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

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        padding: 2rem;
        gap: 1rem;
        transition: left 0.3s ease;
    }

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

    .mobile-menu-toggle {
        display: flex;
    }

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

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

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .section {
        padding: 3rem 0;
    }

    .hero {
        min-height: 80vh;
    }

    .contact-form {
        padding: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .features-grid,
    .use-cases-grid,
    .blockchains-content {
        grid-template-columns: 1fr;
    }
}