/* ==================== VARIABLES ==================== */
:root {
    /* Colors - Monochromatic Blue */
    --primary-blue: #0099FF;
    --electric-blue: #00D4FF;
    --deep-blue: #0066CC;
    --dark-bg: #0A0E27;
    --darker-bg: #050812;
    --light-accent: #FFFFFF;
    --gray-light: #E5E7EB;
    --gray-mid: #94A3B8;
    --gray-dark: #64748B;

    /* Typography */
    --font-main: 'Inter', -apple-system, sans-serif;
    --font-display: 'Poppins', -apple-system, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--darker-bg);
    color: var(--light-accent);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==================== NAVIGATION HEADER ==================== */
.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 153, 255, 0.2);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.nav-header.scrolled {
    background: rgba(10, 14, 39, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-accent);
    letter-spacing: 0.05em;
}

.nav-brand span {
    color: var(--electric-blue);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--gray-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--electric-blue);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--electric-blue);
}

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


/* ==================== HERO SECTION ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
}

#streams-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.8;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 1000px;
    padding: var(--spacing-md);
    padding-top: calc(var(--spacing-xl) + 60px);
    /* Account for fixed nav */
    animation: fadeInUp 1.2s ease;
}

.tagline {
    font-family: var(--font-display);
    font-size: clamp(4rem, 12vw, 8rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--electric-blue) 0%, var(--primary-blue) 50%, var(--deep-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    animation: gradientFlow 8s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientFlow {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

.subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    color: var(--gray-light);
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
}

/* ==================== BUTTONS ==================== */
.cta-btn {
    padding: 1.25rem 3rem;
    font-family: var(--font-main);
    font-size: 1.125rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    background: var(--primary-blue);
    color: var(--light-accent);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 153, 255, 0.4);
    position: relative;
    overflow: hidden;
}

.cta-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 ease;
}

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

.cta-btn:hover {
    background: var(--electric-blue);
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 212, 255, 0.6);
}

.cta-btn.large {
    padding: 1.5rem 4rem;
    font-size: 1.25rem;
}

/* ==================== CONTAINER ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==================== SECTIONS ==================== */
.concept,
.benefits {
    padding: var(--spacing-xl) 0;
    background: var(--dark-bg);
    position: relative;
}

.concept::before,
.benefits::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--deep-blue), transparent);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--light-accent);
}

/* ==================== CONCEPT SECTION ==================== */
.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.concept-card {
    background: rgba(26, 31, 58, 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 153, 255, 0.2);
    border-radius: 16px;
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.4s ease;
}

.concept-card.highlight {
    border-color: var(--primary-blue);
    background: rgba(0, 153, 255, 0.1);
}

.concept-card:hover {
    transform: translateY(-8px);
    border-color: var(--electric-blue);
    box-shadow: 0 8px 32px rgba(0, 153, 255, 0.3);
}

.icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue), var(--deep-blue));
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 153, 255, 0.3);
}

.icon-wrapper .icon {
    width: 40px;
    height: 40px;
    color: white;
}

.concept-card h3 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    color: var(--electric-blue);
}

.concept-card p {
    color: var(--gray-light);
    line-height: 1.8;
}

/* ==================== BENEFITS SECTION ==================== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.benefit-card {
    background: rgba(10, 14, 39, 0.6);
    border: 1px solid rgba(100, 116, 139, 0.3);
    border-radius: 12px;
    padding: var(--spacing-md);
    text-align: center;
    transition: all 0.3s ease;
}

.benefit-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 153, 255, 0.2);
}

.benefit-card:hover .benefit-icon {
    transform: scale(1.1);
    background: var(--primary-blue);
}

.benefit-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 153, 255, 0.2);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.benefit-icon svg {
    width: 32px;
    height: 32px;
    color: var(--electric-blue);
}

.benefit-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--light-accent);
}

.benefit-card p {
    font-size: 0.9375rem;
    color: var(--gray-mid);
    line-height: 1.6;
}

/* ==================== FINAL CTA ==================== */
.final-cta {
    padding: var(--spacing-xl) 0;
    background: var(--darker-bg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 153, 255, 0.2) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }

    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.8;
    }
}

.cta-tagline {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 900;
    background: linear-gradient(135deg, var(--electric-blue), var(--primary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.cta-text {
    font-size: 1.5rem;
    color: var(--gray-light);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

/* ==================== CONTACT SECTION ==================== */
.contact {
    padding: var(--spacing-xl) 0;
    background: var(--dark-bg);
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.25rem;
    color: var(--gray-light);
    margin-bottom: var(--spacing-md);
}

.contact-email {
    display: inline-block;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--electric-blue);
    text-decoration: none;
    padding: 1rem 2rem;
    border: 2px solid var(--electric-blue);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.contact-email:hover {
    background: var(--electric-blue);
    color: var(--light-accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.4);
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--darker-bg);
    border-top: 1px solid rgba(0, 153, 255, 0.2);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.footer-brand {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-accent);
    margin-bottom: var(--spacing-xs);
}

.footer-brand span {
    color: var(--electric-blue);
}

.footer-tagline {
    color: var(--gray-mid);
    font-size: 0.875rem;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(100, 116, 139, 0.2);
}

.footer-bottom p {
    color: var(--gray-dark);
    font-size: 0.875rem;
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .nav-brand {
        font-size: 1.125rem;
    }

    .nav-links {
        gap: 0.75rem;
    }

    .nav-link {
        font-size: 0.8125rem;
        padding: 0.5rem 0;
    }

    .nav-container {
        padding: 0 1rem;
    }

    .concept-grid {
        grid-template-columns: 1fr;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
    }

    .tagline {
        font-size: clamp(3rem, 10vw, 5rem);
    }

    .cta-btn {
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    .cta-btn.large {
        padding: 1.25rem 2.5rem;
        font-size: 1.125rem;
    }

    .contact-email {
        font-size: 1.25rem;
        padding: 0.875rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .nav-brand {
        font-size: 1rem;
    }

    .nav-links {
        gap: 0.5rem;
    }

    .nav-link {
        font-size: 0.75rem;
    }
}