/* ============================================
   Extension presentation pages
   ============================================ */

.extension-main {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    padding: 48px var(--layout-padding-x) var(--layout-padding-y-end);
    box-sizing: border-box;
}

.extension-container {
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 760px;
    margin: 0 auto;
}

.extension-container--index {
    max-width: var(--layout-content-max);
}

.extension-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    letter-spacing: 0.03em;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.extension-back:hover {
    opacity: 0.85;
    transform: translateX(-2px);
}

.extension-back__icon {
    font-size: 1.25rem;
    line-height: 1;
}

.extension-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 24px;
    padding: clamp(28px, 4vw, 40px);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(76, 46, 139, 0.1);
    box-shadow: 0 16px 40px rgba(44, 18, 59, 0.08);
}

.extension-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(76, 46, 139, 0.08);
    border: 1px solid rgba(76, 46, 139, 0.12);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--color-darkpurple-medium);
}

.extension-hero__badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--top-bar-gradient-75deg);
    flex-shrink: 0;
}

.extension-hero__media {
    width: 100%;
    display: flex;
    justify-content: center;
}

.extension-hero__image {
    display: block;
    width: 100%;
    max-width: 520px;
    height: auto;
    border-radius: 18px;
    box-shadow: 0 12px 32px rgba(44, 18, 59, 0.14);
}

.extension-hero__title {
    margin: 0;
    font-size: clamp(2rem, 4vw, 2.75rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.extension-hero__desc {
    margin: 0;
    max-width: 560px;
    font-size: 1.0625rem;
    line-height: 1.6;
}

.extension-features {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    max-width: 560px;
    text-align: left;
}

.extension-features__item {
    position: relative;
    padding-left: 22px;
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--color-lightpurple);
}

.extension-features__item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--gradient-pink);
}

.extension-compat {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.extension-compat__pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    background: #9146ff;
    color: #fff;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 14px rgba(145, 70, 255, 0.28);
}

.extension-compat__pill img {
    width: 18px;
    height: 18px;
    display: block;
    filter: brightness(0) invert(1);
}

.extension-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    width: 100%;
    max-width: 420px;
}

.extension-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 52px;
    padding: 14px 24px;
    border-radius: 14px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.extension-cta--primary {
    background: var(--color-darkpurple);
    color: var(--color-white);
    border: none;
    box-shadow: 0 8px 22px rgba(44, 18, 59, 0.22);
}

.extension-cta--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(44, 18, 59, 0.28);
}

.extension-cta--unlock {
    background: var(--gradient-pink);
    color: var(--color-white);
    box-shadow: 0 8px 22px rgba(255, 49, 210, 0.25);
}

.extension-cta--unlock:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(255, 49, 210, 0.32);
}

.extension-actions__hint {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-lightpurple);
    max-width: 420px;
}

.extension-index-header {
    text-align: center;
    margin-bottom: 8px;
}

.extension-index-header__title {
    margin: 0 0 12px;
    font-size: clamp(2.25rem, 4vw, 3rem);
    line-height: 1.1;
}

.extension-index-header__desc {
    margin: 0 auto;
    max-width: 620px;
    font-size: 1.0625rem;
    line-height: 1.55;
}

.extension-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.extension-card {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(76, 46, 139, 0.1);
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 8px 24px rgba(44, 18, 59, 0.06);
}

.extension-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 36px rgba(44, 18, 59, 0.12);
}

.extension-card__image {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-radius: 14px;
}

.extension-card__title {
    margin: 0;
    font-size: 1.25rem;
    line-height: 1.3;
}

.extension-card__desc {
    margin: 0;
    flex: 1;
    font-size: 0.9375rem;
    line-height: 1.5;
}

.extension-card__link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-darkpurple-medium);
    transition: color 0.2s ease;
}

.extension-card:hover .extension-card__link {
    color: #ff31d2;
}

.extension-not-found {
    text-align: center;
    padding: 48px 24px;
}

.extension-not-found h1 {
    margin: 0 0 12px;
}

@media (max-width: 768px) {
    .extension-main {
        padding: 32px var(--layout-padding-x-mobile) var(--layout-padding-y-end-mobile);
    }

    .extension-hero {
        padding: 24px 18px;
        gap: 20px;
    }

    .extension-hero__image {
        border-radius: 14px;
    }
}