:root {
    --white: #FFFFFF;
    --black: #05070A;
    --navy: #0F172A;
    --zinc-50: #F8FAFC;
    --zinc-100: #F1F5F9;
    --zinc-200: #E2E8F0;
    --zinc-300: #CBD5E1;
    --zinc-500: #64748B;
    --zinc-800: #1E293B;
    --zinc-900: #0F172A;
    
    --electric-blue: #0052FF;
    --royal-purple: #7000FF;
    --blue-flow: linear-gradient(135deg, var(--electric-blue) 0%, var(--royal-purple) 100%);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(15, 23, 42, 0.08);
    
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    --nav-height: 80px;
}

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

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

body {
    background-color: var(--white);
    color: var(--zinc-900);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .brand-name, .nav-logo {
    font-family: 'Plus Jakarta Sans', sans-serif;
    letter-spacing: -0.03em;
}

h1 {
    font-size: clamp(3.5rem, 10vw, 6.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 2.5rem;
}

h2 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
}

.bg-gradient-layers {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: radial-gradient(circle at 50% 50%, #fdfdff 0%, #f5f7ff 100%);
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(160px);
    opacity: 0.15;
    pointer-events: none;
    will-change: transform;
}

.glow-1 { width: 80vw; height: 80vw; background: radial-gradient(circle, var(--electric-blue), transparent); top: -30%; right: -20%; animation: float 25s infinite alternate; }
.glow-2 { width: 70vw; height: 70vw; background: radial-gradient(circle, var(--royal-purple), transparent); bottom: -20%; left: -20%; animation: float 30s infinite alternate-reverse; }
.glow-3 { width: 60vw; height: 60vw; background: radial-gradient(circle, #00C2FF, transparent); top: 20%; left: 5%; opacity: 0.1; animation: float 35s infinite alternate; }

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(100px, 80px) scale(1.1); }
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    z-index: 1000;
    backdrop-filter: blur(20px) saturate(180%);
    background: rgba(255, 255, 255, 0.75);
    border-bottom: 1px solid rgba(15, 23, 42, 0.04);
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    height: 70px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

.nav-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--zinc-900);
}

.navbar-logo-img {
    height: 48px;
    width: auto;
    transition: var(--transition-bounce);
    animation: float-small 4s ease-in-out infinite;
}

@keyframes float-small {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--zinc-500);
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition-smooth);
    position: relative;
}

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

.cta-nav {
    background: var(--zinc-900);
    color: var(--white) !important;
    padding: 0.8rem 1.8rem;
    border-radius: 99px;
    font-weight: 700;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.hero-section {
    padding-top: calc(var(--nav-height) + 8rem);
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
}

.highlight {
    background: var(--blue-flow);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    padding: 0.05em 0;
    margin-bottom: -0.05em;
}

.hero-desc {
    color: var(--zinc-500);
    font-size: clamp(1.15rem, 2.5vw, 1.4rem);
    margin: 0 auto 3.5rem;
    max-width: 720px;
    font-weight: 400;
}

.form-group {
    background: var(--white);
    padding: 8px;
    border-radius: 99px;
    display: flex;
    border: 1px solid var(--zinc-200);
    max-width: 520px;
    margin: 0 auto 10rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.05);
    transition: var(--transition-smooth);
}

#email-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 1rem 2rem;
    color: var(--zinc-900);
    outline: none;
    font-size: 1.1rem;
    width: 100%;
}

#notify-btn {
    background: var(--blue-flow);
    color: var(--white);
    border: none;
    padding: 1rem 2.2rem;
    border-radius: 99px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-bounce);
}

.section { 
    padding: 10rem 2rem; 
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-label {
    font-weight: 800;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5em;
    color: var(--electric-blue);
    margin-bottom: 1.5rem;
    display: block;
    text-align: center;
}

.section-title {
    text-align: center;
    margin-bottom: 0;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 2.5rem;
    justify-content: center;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: 40px;
    padding: 3.5rem;
    text-align: left;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.glass-card:hover {
    transform: translateY(-12px) scale(1.01);
    border-color: rgba(0, 82, 255, 0.2);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.08);
}

.product-tag {
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--zinc-500);
    margin-bottom: 1.5rem;
}

.feature-list {
    display: flex;
    gap: 1rem;
    list-style: none;
    padding: 0;
}

.feature-list li {
    background: var(--white);
    padding: 0.6rem 1.2rem;
    border-radius: 99px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--zinc-800);
    border: 1px solid var(--zinc-100);
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5rem;
    justify-content: center;
}

.principle-card {
    transition: var(--transition-smooth);
}

.principle-card h4 {
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.principle-icon {
    width: 48px;
    height: 48px;
    color: var(--electric-blue);
    background: var(--zinc-100);
    padding: 10px;
    border-radius: 16px;
    margin-bottom: 1rem;
}

.principle-card p {
    color: var(--zinc-500);
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.footer {
    padding: 6rem 0 4rem;
    border-top: 1px solid var(--zinc-100);
    max-width: 1200px;
    margin: 0 auto;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--zinc-500);
    font-size: 0.9rem;
}

@media (max-width: 1024px) {
    .principles-grid { grid-template-columns: 1fr; gap: 3rem; }
    .product-grid { grid-template-columns: 1fr; }
    h1 { font-size: 4rem; }
}

@media (max-width: 640px) {
    .nav-links { display: none; }
    .form-group { flex-direction: column; border-radius: 24px; }
    #notify-btn { width: 100%; margin-top: 8px; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
    border-color: #ff4d4d !important;
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}