:root {
    --teth-bg: #020617;
    --teth-card-bg: rgba(255, 255, 255, 0.96);
    --teth-accent: #00bfa6;
    --teth-accent-dark: #007a7c;
    --teth-text: #0f172a;
    --teth-muted: #64748b;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--teth-bg);
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    overscroll-behavior-y: contain;
    touch-action: manipulation;
}

body {
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
}

#teth-starfield {
    position: fixed;
    inset: 0;
    z-index: 0;
    background: radial-gradient(ellipse at bottom, #1b2735 0%, #020617 70%, #000 100%);
    overflow: hidden;
}

.teth-star {
    position: absolute;
    background: #fff;
    border-radius: 50%;
    opacity: .35;
    animation: tethTwinkle var(--duration, 3s) infinite ease-in-out;
}

@keyframes tethTwinkle {
    0%, 100% {
        transform: scale(1);
        opacity: .25;
    }
    50% {
        transform: scale(1.45);
        opacity: .95;
    }
}

.teth-wrapper {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: max(12px, env(safe-area-inset-top));
    padding-bottom: max(12px, env(safe-area-inset-bottom));
    padding-left: max(12px, env(safe-area-inset-left));
    padding-right: max(12px, env(safe-area-inset-right));
    overflow: hidden;
}

.teth-card {
    width: 100%;
    max-width: 420px;
    max-height: calc(100svh - 24px);
    background: var(--teth-card-bg);
    color: var(--teth-text);
    border-radius: 22px;
    padding: 18px;
    box-shadow: 0 18px 45px rgba(0, 0, 0, .35);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.teth-card::-webkit-scrollbar {
    width: 4px;
}

.teth-card::-webkit-scrollbar-thumb {
    background: rgba(0, 191, 166, .45);
    border-radius: 999px;
}

@media (max-width: 480px) {
    .teth-wrapper {
        padding-top: max(8px, env(safe-area-inset-top));
        padding-bottom: max(8px, env(safe-area-inset-bottom));
        padding-left: max(8px, env(safe-area-inset-left));
        padding-right: max(8px, env(safe-area-inset-right));
    }

    .teth-card {
        max-width: 340px;
        max-height: calc(100svh - 16px);
        padding: 14px;
        border-radius: 18px;
        gap: 10px;
    }
}