/* Floating Quiz Button — кружок с ? в стиле сайта */

.floating-quiz-btn {
    position: fixed;
    left: 20px;
    bottom: 90px;
    z-index: 1501;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
    padding: 0;
    font-size: 1.3rem;
    font-weight: 800;
    color: #DC2626;
    background: linear-gradient(135deg, rgba(30, 30, 48, 0.92) 0%, rgba(20, 16, 36, 0.92) 100%);
    border: 1px solid rgba(220, 38, 38, 0.25);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    pointer-events: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.floating-quiz-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.floating-quiz-btn:hover {
    border-color: rgba(220, 38, 38, 0.4);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
    transform: translateY(-2px);
}

.floating-quiz-btn:active {
    transform: translateY(0) scale(0.95);
}

.fqb-icon {
    line-height: 1;
}

/* Tablet */
@media (max-width: 768px) {
    .floating-quiz-btn {
        left: 16px;
        bottom: 76px;
        width: 44px;
        height: 44px;
        font-size: 1.15rem;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .floating-quiz-btn {
        left: 12px;
        bottom: 70px;
        width: 42px;
        height: 42px;
    }
}

/* Desktop */
@media (min-width: 1025px) {
    .floating-quiz-btn {
        left: 24px;
        bottom: 96px;
        width: 52px;
        height: 52px;
        font-size: 1.4rem;
    }
}

/* Скрывать при открытых модалках (body overflow: hidden) */
body[style*="overflow: hidden"] .floating-quiz-btn,
body[style*="overflow:hidden"] .floating-quiz-btn {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

@media (prefers-reduced-motion: reduce) {
    .floating-quiz-btn {
        transition: opacity 0.2s, visibility 0.2s;
    }
}