/* ========== ОСНОВНЫЕ СТИЛИ ========== */
.faq-hero {
    padding: 60px 20px 40px;
    text-align: center;
    background: var(--bg-body);
}
.faq-hero__title {
    font-size: 2.6rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0.5rem;
}
.faq-hero__subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 550px;
    margin: 0 auto;
}

/* ТАБЫ */
.faq-tabs {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 20px 60px;
}
.faq-tabs__nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
}
.tab-btn {
    background: transparent;
    border: none;
    padding: 10px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 60px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: 0.2s;
}
.tab-btn:hover {
    background: rgba(146, 83, 195, 0.1);
    color: var(--accent);
    transform: translateY(-2px);
}
.tab-btn.active {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 12px rgba(146, 83, 195, 0.3);
}

/* Сетка карточек (скрыты по умолчанию, активная показывается) */
.faq-grid {
    display: none;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    animation: fadeGrid 0.3s ease;
}
.faq-grid.active {
    display: grid;
}
@keyframes fadeGrid {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* КАРТОЧКА (переворот) */
.flip-card {
    background: transparent;
    width: 100%;
    height: 280px;
    perspective: 1000px;
    cursor: pointer;
}
.flip-card__inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.5s ease-in-out;
    transform-style: preserve-3d;
    border-radius: 28px;
    box-shadow: 0 12px 24px rgba(0,0,0,0.08);
}
.flip-card:hover .flip-card__inner {
    transform: rotateY(180deg);
}
/* для мобильных (клик) */
.flip-card.open .flip-card__inner {
    transform: rotateY(180deg);
}
.flip-card__front, .flip-card__back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 28px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-sizing: border-box;
}
.flip-card__front {
    background: var(--bg-card);
    gap: 12px;
}
.flip-card__icon {
    font-size: 2.6rem;
    color: var(--accent);
}
.flip-card__question {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0;
    line-height: 1.3;
    color: var(--text-primary);
}
.flip-card__tags {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}
.tag {
    background: rgba(146, 83, 195, 0.15);
    padding: 4px 10px;
    border-radius: 40px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.3px;
}
.flip-card__back {
    transform: rotateY(180deg);
    background: var(--accent-gradient);
    color: white;
    border: none;
    justify-content: center;
    text-align: center;
}
.flip-card__back-content i {
    font-size: 2rem;
    margin-bottom: 12px;
    display: inline-block;
}
.flip-card__back-content p {
    font-size: 0.9rem;
    line-height: 1.45;
    margin: 0;
}
.highlight, .flip-card__back-content strong:not(.warning) {
    color: #fff5c4;
    background: rgba(0,0,0,0.2);
    padding: 0 3px;
    border-radius: 8px;
}
.warning {
    color: #ffb347;
    font-weight: 700;
}
.link-accent {
    color: white;
    text-decoration: none;
    border-bottom: 1px dashed rgba(255,255,255,0.6);
}
.link-accent:hover {
    border-bottom-style: solid;
}
/* тёмная/светлая тема для лицевой стороны */
[data-theme="dark"] .flip-card__front {
    background: rgba(17, 16, 31, 0.9);
}
[data-theme="light"] .flip-card__front {
    background: rgba(255, 255, 255, 0.95);
}
/* адаптив */
@media (max-width: 800px) {
    .flip-card {
        height: 260px;
    }
    .flip-card__question {
        font-size: 1rem;
    }
    .tab-btn {
        padding: 6px 18px;
        font-size: 0.85rem;
    }
    .faq-hero__title {
        font-size: 2rem;
    }
}
@media (max-width: 550px) {
    .flip-card {
        height: auto;
        min-height: 240px;
    }
    .flip-card__front, .flip-card__back {
        position: relative;
        transform: none;
        backface-visibility: visible;
        height: auto;
    }
    .flip-card__inner {
        transform-style: flat;
    }
    .flip-card:hover .flip-card__inner,
    .flip-card.open .flip-card__inner {
        transform: none;
    }
    /* на мобильных карточка не переворачивается, показываем обе стороны друг за другом */
    .flip-card__back {
        transform: none;
        margin-top: 12px;
        background: var(--accent-gradient);
        border-radius: 20px;
    }
}