:root {
    --navy: #040810;
    --cyan: #22d3ee;
    --cyan-muted: rgba(34, 211, 238, 0.72);
    --glass: rgba(255, 255, 255, 0.035);
    --glass-border: rgba(255, 255, 255, 0.09);
    --glass-hover: rgba(255, 255, 255, 0.07);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.68);
    --text-muted: rgba(255, 255, 255, 0.46);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

html {
    min-height: 100%;
}

body {
    align-items: center;
    background: var(--navy);
    color: var(--text-primary);
    display: flex;
    font-family: "Inter", sans-serif;
    justify-content: center;
    min-height: 100vh;
    overflow-x: hidden;
    padding: 20px;
}

.fallback-bg {
    background:
        radial-gradient(ellipse at 20% 80%, rgba(26, 42, 74, 0.86) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(10, 30, 50, 0.92) 0%, transparent 50%),
        linear-gradient(180deg, #040810 0%, #081020 50%, #040810 100%);
    inset: 0;
    position: fixed;
    z-index: 0;
}

.fallback-bg::before {
    animation: meshMove 15s ease-in-out infinite;
    background:
        radial-gradient(ellipse at 30% 60%, rgba(34, 211, 238, 0.07) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 40%, rgba(34, 211, 238, 0.05) 0%, transparent 40%);
    content: "";
    inset: 0;
    position: absolute;
}

@keyframes meshMove {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(5%, -3%) scale(1.05);
    }

    66% {
        transform: translate(-3%, 5%) scale(0.95);
    }
}

.video-bg {
    height: 100%;
    inset: 0;
    object-fit: cover;
    position: fixed;
    width: 100%;
    z-index: 0;
}

.video-overlay {
    background:
        radial-gradient(ellipse 80% 70% at 50% 50%, rgba(4, 8, 16, 0.48) 0%, rgba(4, 8, 16, 0.16) 100%),
        linear-gradient(180deg, rgba(4, 8, 16, 0.34), rgba(4, 8, 16, 0.48));
    inset: 0;
    position: fixed;
    z-index: 1;
}

.dna-glow {
    animation: glowPulse 6s ease-in-out infinite;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    height: 500px;
    left: 50%;
    pointer-events: none;
    position: fixed;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    z-index: 1;
}

@keyframes glowPulse {
    0%,
    100% {
        opacity: 0.4;
        transform: translate(-50%, -50%) scale(1);
    }

    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.28);
    }
}

.particles-container {
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    position: fixed;
    z-index: 2;
}

.particle {
    animation: floatUp linear infinite;
    background: radial-gradient(circle, rgba(165, 243, 252, 0.58) 0%, rgba(34, 211, 238, 0) 70%);
    border-radius: 50%;
    bottom: -10px;
    filter: blur(0.5px);
    height: 2px;
    opacity: 0;
    position: absolute;
    width: 2px;
}

.particle:nth-child(1) { left: 6%; animation-delay: 0s; animation-duration: 16s; }
.particle:nth-child(2) { left: 12%; animation-delay: 4s; animation-duration: 19s; }
.particle:nth-child(3) { left: 18%; animation-delay: 9s; animation-duration: 14s; }
.particle:nth-child(4) { left: 24%; animation-delay: 2s; animation-duration: 21s; }
.particle:nth-child(5) { left: 31%; animation-delay: 7s; animation-duration: 18s; }
.particle:nth-child(6) { left: 38%; animation-delay: 12s; animation-duration: 16s; }
.particle:nth-child(7) { left: 44%; animation-delay: 5s; animation-duration: 22s; }
.particle:nth-child(8) { left: 49%; animation-delay: 10s; animation-duration: 15s; }
.particle:nth-child(9) { left: 55%; animation-delay: 3s; animation-duration: 20s; }
.particle:nth-child(10) { left: 61%; animation-delay: 8s; animation-duration: 17s; }
.particle:nth-child(11) { left: 67%; animation-delay: 1s; animation-duration: 23s; }
.particle:nth-child(12) { left: 72%; animation-delay: 11s; animation-duration: 16s; }
.particle:nth-child(13) { left: 77%; animation-delay: 6s; animation-duration: 19s; }
.particle:nth-child(14) { left: 82%; animation-delay: 13s; animation-duration: 14s; }
.particle:nth-child(15) { left: 87%; animation-delay: 2.5s; animation-duration: 20s; }
.particle:nth-child(16) { left: 92%; animation-delay: 9.5s; animation-duration: 18s; }
.particle:nth-child(17) { left: 35%; animation-delay: 14s; animation-duration: 24s; }
.particle:nth-child(18) { left: 69%; animation-delay: 15s; animation-duration: 21s; }

@keyframes floatUp {
    0% {
        opacity: 0;
        transform: translateY(0) translateX(0) scale(1);
    }

    10% {
        opacity: 0.34;
    }

    90% {
        opacity: 0.24;
    }

    100% {
        opacity: 0;
        transform: translateY(-110vh) translateX(30px) scale(0.5);
    }
}

.landing-wrapper {
    animation: contentFadeIn 1.5s ease 0.3s forwards;
    max-width: 720px;
    opacity: 0;
    position: relative;
    text-align: center;
    width: 100%;
    z-index: 10;
}

@keyframes contentFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

h1 {
    color: #ffffff;
    font-family: "Cormorant Garamond", serif;
    font-size: 48px;
    font-weight: 600;
    letter-spacing: 2px;
    line-height: 1.2;
    margin-bottom: 12px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    text-transform: uppercase;
}

h1 span {
    color: var(--cyan-muted);
    display: block;
    font-family: "Inter", sans-serif;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 4px;
    margin-top: 10px;
}

.subtitle {
    animation: contentFadeIn 1.5s ease 0.6s forwards;
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.7;
    margin: 0 auto 48px;
    max-width: 560px;
    opacity: 0;
}

.features {
    animation: contentFadeIn 1.5s ease 0.9s forwards;
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(3, 1fr);
    margin-bottom: 48px;
    opacity: 0;
}

.feature {
    background: var(--glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    cursor: default;
    overflow: hidden;
    padding: 28px 16px;
    position: relative;
    transition: all 0.5s ease;
}

.feature:hover {
    background: var(--glass-hover);
    border-color: rgba(34, 211, 238, 0.3);
    box-shadow: 0 0 40px rgba(34, 211, 238, 0.08);
    transform: translateY(-4px);
}

.feature::before {
    animation: cardPulse 8s ease-in-out infinite;
    background: radial-gradient(circle at 50% 50%, rgba(34, 211, 238, 0.03) 0%, transparent 50%);
    content: "";
    height: 200%;
    left: -50%;
    pointer-events: none;
    position: absolute;
    top: -50%;
    width: 200%;
    z-index: 0;
}

@keyframes cardPulse {
    0%,
    100% {
        opacity: 0.3;
        transform: scale(0.9);
    }

    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.feature-title {
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 4px;
    position: relative;
    z-index: 1;
}

.feature-desc {
    color: var(--text-muted);
    font-size: 12px;
    position: relative;
    z-index: 1;
}

.actions {
    animation: contentFadeIn 1.5s ease 1.2s forwards;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    opacity: 0;
}

.login-btn,
.secondary-btn {
    backdrop-filter: blur(12px);
    border-radius: 50px;
    color: var(--text-primary);
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    min-width: 190px;
    padding: 18px 34px;
    text-decoration: none;
    text-transform: uppercase;
    transition: all 0.3s ease;
}

.login-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(34, 211, 238, 0.3);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.login-btn:hover,
.secondary-btn:hover,
.login-btn:focus-visible,
.secondary-btn:focus-visible {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(34, 211, 238, 0.6);
    box-shadow: 0 0 30px rgba(34, 211, 238, 0.15);
    outline: none;
    transform: translateY(-2px);
}

.footer {
    animation: contentFadeIn 1.5s ease 1.5s forwards;
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 48px;
    opacity: 0;
}

@media (max-width: 640px) {
    body {
        align-items: flex-start;
        padding: 64px 20px 32px;
    }

    h1 {
        font-size: 32px;
    }

    h1 span {
        font-size: 12px;
        letter-spacing: 2.5px;
    }

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

    .actions {
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
    }
}