:root {
    --text-main: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.74);
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.22);
    --control-size: 46px;
    --control-size-mobile: 42px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
}

html,
body {
    height: 100%;
}

body {
    overflow: hidden;
    color: var(--text-main);
    font-family: "JetBrains Mono", monospace;
    background: #050507;
}

.pc-page {
    overflow-x: hidden;
    overflow-y: auto;
}

.background {
    position: fixed;
    inset: 0;
    background: url("../background.jpg") center / cover no-repeat;
    background-image: image-set(
        url("../background.webp") type("image/webp"),
        url("../background.jpg") type("image/jpeg")
    );
    z-index: -2;
    overflow: hidden;
}

.background::before,
.background::after {
    content: "";
    position: absolute;
    inset: -18%;
    pointer-events: none;
    mix-blend-mode: screen;
}

.background::before {
    background:
        radial-gradient(circle at 20% 26%, rgba(255, 246, 214, 0.14), transparent 28%),
        radial-gradient(circle at 74% 66%, rgba(178, 225, 255, 0.1), transparent 26%);
    animation: ambient-drift-a 18s ease-in-out infinite alternate;
}

.background::after {
    background:
        radial-gradient(circle at 74% 16%, rgba(255, 255, 255, 0.08), transparent 22%),
        radial-gradient(circle at 28% 80%, rgba(188, 255, 235, 0.08), transparent 24%);
    animation: ambient-drift-b 24s ease-in-out infinite alternate;
}

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.52);
    backdrop-filter: blur(8px);
    z-index: -1;
}

.menu-wrap {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: min(700px, calc(100vw - 26px));
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.menu-grid {
    width: min(700px, 100%);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.menu-wrap-pc {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    width: min(820px, calc(100vw - 26px));
    margin: clamp(24px, 4vh, 44px) auto 82px;
}

#pageTitle {
    font-family: "Instrument Serif", serif;
    font-size: clamp(44px, 8vw, 56px);
    line-height: 1;
}

.pc-page-title {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: "Instrument Serif", serif;
    font-size: clamp(38px, 6vw, 50px);
    line-height: 1;
}

.pc-title-icon {
    width: clamp(26px, 3.6vw, 32px);
    height: clamp(26px, 3.6vw, 32px);
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.94;
}

.menu-card {
    width: 100%;
    min-height: 130px;
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    color: var(--text-main);
    font-family: "JetBrains Mono", monospace;
    font-size: clamp(24px, 5vw, 36px);
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
}

.menu-card:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.12);
}

.menu-card-link {
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.referral-grid {
    width: min(760px, 100%);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.referral-card {
    min-height: 132px;
    padding: 18px;
    gap: 14px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    text-align: left;
}

.referral-card-icon {
    width: 34px;
    height: 34px;
    object-fit: contain;
    flex: 0 0 auto;
    filter: brightness(0) invert(1);
    opacity: 0.92;
}

.referral-card-text {
    display: grid;
    gap: 4px;
}

.referral-card-title {
    color: var(--text-main);
    font-size: 20px;
    line-height: 1.1;
}

.referral-card-note {
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.35;
}

.pc-spec {
    width: min(820px, 100%);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 16px;
    text-align: left;
    position: relative;
}

.pc-spec-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.copy-toast {
    min-height: 18px;
    color: rgba(217, 255, 232, 0.96);
    font-size: 11px;
    letter-spacing: 0.03em;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.copy-toast.visible {
    opacity: 1;
    transform: translateY(0);
}

.copy-all-btn {
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: rgba(0, 0, 0, 0.35);
    color: rgba(255, 255, 255, 0.94);
    border-radius: 10px;
    padding: 5px 9px;
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.copy-all-btn:hover {
    background: rgba(0, 0, 0, 0.5);
    transform: translateY(-1px);
}

.spec-sections {
    display: grid;
    gap: 14px;
}

.spec-section {
    display: grid;
    gap: 8px;
}

.spec-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.spec-section-title-icon {
    width: 18px;
    height: 18px;
    object-fit: contain;
    flex: 0 0 auto;
    opacity: 0.92;
}

.spec-list {
    list-style: none;
    display: grid;
    gap: 8px;
}

.spec-item {
    width: 100%;
    border: 0;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.96);
    font-family: inherit;
    font-size: 14px;
    line-height: 1.3;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 11px;
    cursor: pointer;
    transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.spec-item:hover {
    background: rgba(255, 255, 255, 0.09);
    transform: translateX(2px);
}

.spec-icon {
    width: 18px;
    height: 18px;
    object-fit: contain;
    flex: 0 0 auto;
    filter: brightness(0) invert(1);
    opacity: 0.88;
}

.spec-item.copied {
    background: rgba(111, 207, 151, 0.24);
    color: #d9ffe8;
}

.copy-all-btn.copied {
    background: rgba(111, 207, 151, 0.32);
    border-color: rgba(111, 207, 151, 0.5);
}

.menu-back {
    color: var(--text-muted);
    text-decoration: none;
    padding: 7px 12px;
    border-radius: 10px;
    transition: background 0.2s ease, color 0.2s ease;
}

.menu-back:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.08);
}

.controls {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 20;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}

.language-toggle {
    width: var(--control-size);
    height: var(--control-size);
    border-radius: 999px;
    border: none;
    color: transparent;
    backdrop-filter: blur(10px);
    display: grid;
    place-items: center;
    font-size: 0;
    cursor: pointer;
    opacity: 0.97;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.language-toggle:hover {
    opacity: 1;
    transform: translateY(-1px);
}

.language-toggle:focus,
.language-toggle:focus-visible {
    outline: none;
}

.language-toggle.is-ru {
    background-image: url("../russia.png");
}

.language-toggle.is-en {
    background-image: url("../united-states.png");
}

.music-toggle {
    width: var(--control-size);
    height: var(--control-size);
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    background: rgba(0, 0, 0, 0.36);
    color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    display: grid;
    place-items: center;
    font-size: 24px;
    cursor: pointer;
    opacity: 0.9;
    transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.music-toggle:hover {
    opacity: 1;
    transform: translateY(-1px);
    background: rgba(0, 0, 0, 0.5);
}

.music-toggle iconify-icon {
    pointer-events: none;
}

.menu-card:focus-visible,
.menu-card-link:focus-visible,
.menu-back:focus-visible,
.copy-all-btn:focus-visible,
.music-toggle:focus-visible,
.spec-item:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.85);
    outline-offset: 2px;
}

@keyframes ambient-drift-a {
    from {
        transform: translate3d(-1.5%, -1%, 0) scale(1);
    }

    to {
        transform: translate3d(2%, 1.5%, 0) scale(1.06);
    }
}

@keyframes ambient-drift-b {
    from {
        transform: translate3d(1.5%, -1.5%, 0) scale(1.02);
    }

    to {
        transform: translate3d(-2%, 2%, 0) scale(1.08);
    }
}

@media (max-width: 680px) {
    .menu-grid,
    .referral-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .menu-card {
        min-height: 112px;
    }

    .referral-card {
        min-height: 104px;
        padding: 15px;
        gap: 11px;
    }

    .referral-card-icon {
        width: 28px;
        height: 28px;
    }

    .referral-card-title {
        font-size: 18px;
    }

    .referral-card-note {
        font-size: 11px;
    }

    .menu-wrap-pc {
        margin: 18px auto 76px;
        gap: 8px;
    }

    .pc-page-title {
        gap: 8px;
        font-size: clamp(30px, 9vw, 38px);
    }

    .pc-title-icon {
        width: 22px;
        height: 22px;
    }

    .controls {
        right: 14px;
        bottom: 14px;
    }

    .music-toggle {
        width: var(--control-size-mobile);
        height: var(--control-size-mobile);
        font-size: 22px;
    }

    .language-toggle {
        width: var(--control-size-mobile);
        height: var(--control-size-mobile);
    }

    .pc-spec {
        padding: 13px;
    }

    .pc-spec-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .copy-all-btn {
        font-size: 10px;
        padding: 5px 8px;
    }

    .copy-toast {
        min-height: 0;
        font-size: 10px;
    }

    .spec-item {
        font-size: 13px;
        line-height: 1.25;
        gap: 9px;
        padding: 8px 9px;
    }

    .spec-icon {
        width: 16px;
        height: 16px;
    }

    .spec-section-title {
        font-size: 11px;
    }

    .spec-section-title-icon {
        width: 16px;
        height: 16px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}