* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: #000;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;

    background:
        radial-gradient(
            circle at top,
            #2a2108 0%,
            #100d05 30%,
            #050505 65%,
            #000 100%
        );

    color: #fff;
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Arial,
        sans-serif;
}

.container {
    width: 100%;
    max-width: 520px;
    text-align: center;
}

.logo {
    margin: 0 0 20px;
    font-size: clamp(32px, 8vw, 48px);
    font-weight: 900;
    letter-spacing: -2px;

    background:
        linear-gradient(
            135deg,
            #fff4b0 0%,
            #ffd75a 20%,
            #c99419 45%,
            #fff0a0 65%,
            #b77b08 85%,
            #ffe27a 100%
        );

    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;

    filter:
        drop-shadow(0 0 12px rgba(255, 204, 60, 0.18))
        drop-shadow(0 0 30px rgba(255, 190, 30, 0.08));
}

.language-switcher {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-bottom: 28px;
}

.lang-btn {
    border: 1px solid rgba(218, 168, 35, 0.28);
    background: rgba(255, 255, 255, 0.025);
    color: #8e8e8e;

    padding: 6px 12px;
    border-radius: 8px;

    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;

    cursor: pointer;
    transition:
        color 0.2s ease,
        border-color 0.2s ease,
        background 0.2s ease;
}

.lang-btn:hover {
    color: #e4bd50;
    border-color: rgba(218, 168, 35, 0.55);
}

.lang-btn.active {
    color: #000;
    background:
        linear-gradient(
            135deg,
            #fff0a0,
            #dca82b
        );
    border-color: #e2b43c;
}

.instruction-box {
    padding: 24px;
    margin-bottom: 28px;

    border: 1px solid rgba(218, 168, 35, 0.3);
    border-radius: 14px;

    background: rgba(255, 255, 255, 0.025);
    text-align: left;
}

.instruction-text {
    color: #e4bd50;
    font-size: 15px;
    line-height: 1.7;
    font-weight: 500;
}

.instruction-text p {
    margin: 0 0 14px;
}

.instruction-text p:last-child {
    margin-bottom: 0;
}

.back-button {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 100%;
    min-height: 50px;

    padding: 14px 24px;

    border-radius: 12px;

    background:
        linear-gradient(
            135deg,
            #fff0a0 0%,
            #ffd34f 22%,
            #c28a14 52%,
            #f5d66b 76%,
            #b77c0b 100%
        );

    color: #090909;
    text-decoration: none;

    font-size: 15px;
    font-weight: 800;

    box-shadow:
        0 8px 24px rgba(205, 157, 36, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);

    transition:
        transform 0.2s ease,
        filter 0.2s ease;
}

.back-button:hover {
    transform: translateY(-2px);
    filter: brightness(1.06);
}

footer {
    margin-top: 36px;
    color: #555;
    font-size: 11px;
    letter-spacing: 0.4px;
}