:root {
    --bg-color: #000000;
    --btn-border: #222222;
    --svg-color: #666666;

    --github-hover: #ffffff;
    --discord-hover: #5865F2;
    --telegram-hover: #24A1DE;
    --litecoin-hover: #345D9D;
}

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

body {
    background-color: var(--bg-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.icons-container {
    display: flex;
    flex-direction: row;
    gap: 1.5rem;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.circle-btn {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 1px solid var(--btn-border);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

.circle-btn svg {
    width: 28px;
    height: 28px;
    fill: var(--svg-color);
    transition: fill 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.circle-btn.github:hover {
    border-color: var(--github-hover);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.15);
}

.circle-btn.github:hover svg {
    fill: var(--github-hover);
    transform: scale(1.08);
}

.circle-btn.discord:hover {
    border-color: var(--discord-hover);
    box-shadow: 0 0 20px rgba(88, 101, 242, 0.25);
}

.circle-btn.discord:hover svg {
    fill: var(--discord-hover);
    transform: scale(1.08);
}

.circle-btn.telegram:hover {
    border-color: var(--telegram-hover);
    box-shadow: 0 0 20px rgba(36, 161, 222, 0.25);
}

.circle-btn.telegram:hover svg {
    fill: var(--telegram-hover);
    transform: scale(1.08);
}

.circle-btn.litecoin:hover {
    border-color: var(--litecoin-hover);
    box-shadow: 0 0 20px rgba(52, 93, 157, 0.25);
}

.circle-btn.litecoin:hover svg {
    fill: var(--litecoin-hover);
    transform: scale(1.08);
}

.toast {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%) translateY(15px);
    background: rgba(18, 18, 18, 0.95);
    border: 1px solid #333333;
    color: #eeeeee;
    padding: 0.6rem 1.2rem;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.03em;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 100;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@media (max-width: 380px) {
    .icons-container {
        gap: 1rem;
    }

    .circle-btn {
        width: 54px;
        height: 54px;
    }

    .circle-btn svg {
        width: 24px;
        height: 24px;
    }
}