@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700;800&display=swap');

:root {
    --neon-green: #27f3b5;
    --neon-blue: #12d6ff;
    --neon-red: #ff2b45;

    --bg-1: #050816;
    --bg-2: #071224;
    --text-main: #eaf6ff;
    --text-soft: rgba(234, 246, 255, 0.74);
}

* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "JetBrains Mono", monospace;
    color: var(--text-main);
    overflow: hidden;
    background:
        radial-gradient(circle at 15% 30%, rgba(39, 243, 181, 0.10), transparent 22%),
        radial-gradient(circle at 50% 10%, rgba(255, 43, 69, 0.07), transparent 18%),
        radial-gradient(circle at 85% 70%, rgba(18, 214, 255, 0.10), transparent 22%),
        linear-gradient(180deg, var(--bg-2), var(--bg-1));
}

/* Cursor glow background */
#cursor-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at center,
            rgba(39, 243, 181, 0.15),
            rgba(18, 214, 255, 0.11),
            rgba(255, 43, 69, 0.07),
            transparent 42%);
    transition: background 0.12s linear;
}

/* Center wrapper */
.upgrade-wrapper {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

/* Thin animated border wrapper */
.glass-shell {
    position: relative;
    width: min(830px, 92vw);
    border-radius: 28px;
    padding: 1px;
    overflow: hidden;
}

.glass-shell::before {
    content: "";
    position: absolute;
    inset: -140%;
    background: conic-gradient(from 0deg,
            transparent 0deg,
            var(--neon-blue) 70deg,
            transparent 120deg,
            var(--neon-green) 180deg,
            transparent 230deg,
            var(--neon-red) 290deg,
            transparent 340deg,
            var(--neon-blue) 360deg);
    animation: spinBorder 7s linear infinite;
    filter: blur(8px);
    opacity: 0.65;
}

.glass-shell::after {
    content: "";
    position: absolute;
    inset: 1px;
    border-radius: 27px;
    background: rgba(3, 10, 22, 0.82);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

@keyframes spinBorder {
    100% {
        transform: rotate(360deg);
    }
}

/* Card */
.glass-card {
    position: relative;
    z-index: 2;
    border-radius: 27px;
    padding: 54px 48px;
    text-align: center;
    background:
        linear-gradient(135deg,
            rgba(8, 18, 38, 0.94),
            rgba(3, 10, 22, 0.97));
    box-shadow:
        inset 0 0 0 1px rgba(18, 214, 255, 0.04),
        0 20px 60px rgba(0, 0, 0, 0.55),
        0 0 30px rgba(18, 214, 255, 0.05);
}

/* Badge */
.badge {
    display: inline-block;
    margin-bottom: 20px;
    padding: 7px 16px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: #03131a;
    background: linear-gradient(90deg, var(--neon-green), var(--neon-blue));
    box-shadow:
        0 0 12px rgba(39, 243, 181, 0.35),
        0 0 24px rgba(18, 214, 255, 0.20);
}

/* Optional small label style */
.dev-label {
    margin: 0 0 14px;
    color: var(--neon-green);
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Title */
.glass-card h1 {
    margin: 0 0 16px;
    font-size: clamp(34px, 4.7vw, 52px);
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-main);
}

.glass-card h1 .blue {
    color: var(--neon-blue);
}

.glass-card h1 .green {
    color: var(--neon-green);
}

.glass-card h1 .red {
    color: var(--neon-red);
}

/* Text */
.glass-card p {
    margin: 0 auto 28px;
    max-width: 650px;
    font-size: 14px;
    line-height: 1.8;
    color: rgba(234, 246, 255, 0.65);
}

/* Button */
.cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 26px;
    border-radius: 999px;
    text-decoration: none;
    font-family: "JetBrains Mono", monospace;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: white;
    background: linear-gradient(90deg,
            var(--neon-blue) 0%,
            var(--neon-green) 55%,
            var(--neon-red) 100%);
    box-shadow:
        0 0 14px rgba(18, 214, 255, 0.18),
        0 0 18px rgba(39, 243, 181, 0.12);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.cta:hover {
    transform: translateY(-2px);
    box-shadow:
        0 0 14px rgba(18, 214, 255, 0.24),
        0 0 20px rgba(39, 243, 181, 0.16),
        0 0 14px rgba(255, 43, 69, 0.12);
}

@media (max-width: 768px) {
    .glass-card {
        padding: 42px 24px;
    }

    .glass-card h1 {
        font-size: clamp(28px, 8vw, 40px);
        letter-spacing: 1px;
    }

    .glass-card p {
        font-size: 13px;
    }

    .cta {
        padding: 13px 20px;
        font-size: 13px;
    }

    .badge {
        font-size: 11px;
    }
}