/* 친구 초대 이벤트 (리뉴얼) — 토큰은 rb.css. 포팅 cscenter_invite_friend.page.css 를 대체합니다.
   JS 훅(cscenter.js): .inv_inner_open[data-type] .Ranking_Reward_Modal_Container .inv4_copy_btn[data-type][data-link]
   .inv4_reward_btn.activate|.deactivate[data-type] .inv4_top_btn */

.inv4_container { display: flex; flex-direction: column; gap: 2.4rem; padding-top: 2.4rem; padding-bottom: 8rem; }

/* 히어로 */
.inv4_hero {
    position: relative; isolation: isolate; overflow: hidden; padding: 7.2rem 4rem 5.6rem; text-align: center;
    border-radius: var(--rb-radius-xl); background: var(--rb-night); color: #fff;
}
.inv4_hero::before, .inv4_hero::after { content: ""; position: absolute; z-index: -1; width: 56rem; height: 56rem; border-radius: 50%; pointer-events: none; }
.inv4_hero::before { left: -18rem; top: -26rem; background: radial-gradient(closest-side, rgba(236, 76, 147, .45), transparent); }
.inv4_hero::after { right: -16rem; bottom: -30rem; background: radial-gradient(closest-side, rgba(109, 58, 237, .55), transparent); }
.inv4_hero_pill { display: inline-flex; align-items: center; height: 3.2rem; padding: 0 1.6rem; border-radius: 999px; background: rgba(255, 255, 255, .12); font: 700 1.35rem/1 var(--rb-font-display); letter-spacing: .02em; color: #FFC2DD; }
.inv4_hero h1 { margin: 2rem 0 0; font: 800 5.2rem/1.15 var(--rb-font-display); letter-spacing: -.03em; color: #fff; }
.inv4_hero h1 em { font-style: normal; color: #FFD66B; }
.inv4_hero_lead { margin: 1.6rem 0 0; font-size: 1.8rem; color: var(--rb-night-ink); }
.inv4_hero_sub { max-width: 52rem; margin: 3.2rem auto 0; }
.inv4_math { display: grid; gap: .8rem; margin: 0; padding: 1.6rem 2rem; list-style: none; border: 1px solid rgba(255, 255, 255, .1); border-radius: var(--rb-radius-lg); background: rgba(255, 255, 255, .06); text-align: left; }
.inv4_math li { display: flex; align-items: baseline; justify-content: space-between; gap: 1.6rem; font-size: 1.45rem; color: var(--rb-night-ink); }
.inv4_math b { font: 800 1.7rem/1.2 var(--rb-font-display); color: #fff; font-variant-numeric: tabular-nums; white-space: nowrap; }
.inv4_hero_code { margin-top: 1.6rem; font-size: 1.35rem; line-height: 1.6; color: var(--rb-night-ink); overflow-wrap: anywhere; }
.inv4_hero_code b { color: #fff; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .02em; }

/* 초대 링크 CTA 바 */
.inv4_bottom_cta_inner {
    display: flex; align-items: center; justify-content: space-between; gap: 2.4rem; padding: 2.4rem 3.2rem;
    border-radius: var(--rb-radius-xl); background: linear-gradient(135deg, #6D3AED, #4C1D95); color: #fff;
}
.inv4_bottom_left { display: flex; align-items: center; gap: 1.6rem; min-width: 0; }
.inv4_bottom_left img { flex: none; width: 6.4rem; height: 6.4rem; }
.inv4_bottom_text { margin: 0; font-size: 1.6rem; line-height: 1.5; color: #E6DCFF; }
.inv4_bottom_text .strong { display: inline-block; font: 800 2.2rem/1.3 var(--rb-font-display); color: #fff; }
.inv4_copy_btn { flex: none; min-height: 5.2rem; padding: 0 2.8rem; font-size: 1.6rem; }

/* 이벤트 섹션 */
.inv4_section { margin-top: 5.6rem; text-align: center; }
.inv4_ribbon { display: inline-flex; align-items: center; height: 3rem; padding: 0 1.4rem; border-radius: 999px; background: var(--rb-ink); color: #fff; font: 800 1.3rem/1 var(--rb-font-display); letter-spacing: .12em; }
.inv4_section_title { margin: 1.4rem 0 0; font: 800 3.2rem/1.25 var(--rb-font-display); letter-spacing: -.02em; color: var(--rb-ink); }
.inv4_event1_art { display: flex; align-items: center; justify-content: center; gap: 1.6rem; flex-wrap: wrap; margin: 3.2rem 0; }
.inv4_coin { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .6rem; width: 18rem; height: 18rem; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #F2EBFF, #DCCBFB); box-shadow: inset 0 0 0 6px #fff, var(--rb-shadow-2); }
.inv4_coin span { font-size: 1.4rem; font-weight: 600; color: var(--rb-violet-ink); }
.inv4_coin b { max-width: 80%; text-align: center; font: 800 2.6rem/1.15 var(--rb-font-display); color: var(--rb-ink); letter-spacing: -.02em; }
.inv4_coin--gold { background: radial-gradient(circle at 35% 30%, #FFF4D2, #F8DD8A); }
.inv4_coin--gold span { color: var(--rb-gold-ink); }
.inv4_plus { font: 800 3.2rem/1 var(--rb-font-display); color: var(--rb-ink-4); }
.inv4_event1_body { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem; text-align: left; }
.inv4_col { display: flex; flex-direction: column; gap: 1.2rem; padding: 3.2rem; border-radius: var(--rb-radius-xl); background: var(--rb-bg-2); }
.inv4_col_num { font: 800 1.6rem/1 var(--rb-font-display); letter-spacing: .1em; color: var(--rb-violet); }
.inv4_col_title { margin: 0; font: 800 2.2rem/1.35 var(--rb-font-display); letter-spacing: -.02em; color: var(--rb-ink); }
.inv4_col_sub { margin: 0; font-size: 1.35rem; color: var(--rb-ink-3); }
.inv4_stat_wrapper { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem; margin-top: .8rem; }
.inv4_stat { display: flex; flex-direction: column; gap: .6rem; min-width: 0; padding: 1.6rem; border: 1px solid var(--rb-line); border-radius: var(--rb-radius); background: #fff; text-align: left; font: inherit; color: inherit; }
button.inv4_stat { cursor: pointer; transition: border-color .2s, box-shadow .2s; }
button.inv4_stat:hover { border-color: var(--rb-violet); box-shadow: var(--rb-shadow-1); }
.inv4_stat_title { font-size: 1.25rem; color: var(--rb-ink-3); }
.inv4_stat_value { font: 800 1.8rem/1.2 var(--rb-font-display); color: var(--rb-ink); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.inv4_stat_more { font-size: 1.2rem; font-weight: 700; color: var(--rb-violet); }
.inv4_reward_btn {
    display: inline-flex; align-items: center; justify-content: center; width: 100%; min-height: 5.2rem; margin-top: .8rem;
    border: 0; border-radius: 999px; font: 700 1.6rem/1 var(--rb-font); cursor: pointer;
}
.inv4_reward_btn.activate { background: var(--rb-violet); color: #fff; }
.inv4_reward_btn.activate:hover { background: var(--rb-violet-600); }
.inv4_reward_btn.deactivate { background: var(--rb-bg-3); color: var(--rb-ink-3); }

.inv4_event2_info { margin: 1.4rem 0 0; font: 700 2rem/1.5 var(--rb-font-display); color: var(--rb-ink); }
.inv4_event2_info .highlight { font-size: 3rem; font-weight: 800; letter-spacing: -.02em; color: var(--rb-violet); }
.inv4_event2_art {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .8rem; max-width: 56rem; margin: 3.2rem auto 0; padding: 4rem 2.4rem;
    border-radius: var(--rb-radius-xl); background: var(--rb-night); color: #fff;
}
.inv4_event2_art span { font-size: 1.6rem; color: var(--rb-night-ink); }
.inv4_event2_art b { font: 800 5.2rem/1.05 var(--rb-font-display); letter-spacing: -.03em; color: #FFD66B; font-variant-numeric: tabular-nums; }

.inv4_notice { margin-top: 5.6rem; padding: 2.8rem 3.2rem; border-radius: var(--rb-radius-lg); background: var(--rb-bg-2); white-space: pre-line; font-size: 1.35rem; line-height: 1.8; color: var(--rb-ink-2); }
.inv4_notice .notice_title { display: block; margin-bottom: .4rem; font: 700 1.6rem/1.5 var(--rb-font-display); color: var(--rb-ink); }

.inv4_top_btn {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .2rem; width: 6.4rem; height: 6.4rem; margin: 2.4rem auto 0;
    border: 1px solid var(--rb-line); border-radius: 50%; background: #fff; color: var(--rb-ink-2); box-shadow: var(--rb-shadow-1);
    font: 700 1.1rem/1 var(--rb-font-display); letter-spacing: .08em; cursor: pointer;
}
.inv4_top_btn svg { width: 2rem; height: 2rem; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* 초대한 친구 목록 모달 (화면 아무 곳이나 누르면 닫힘) */
.Ranking_Reward_Modal_Container { position: fixed; inset: 0; z-index: 10005; display: none; align-items: center; justify-content: center; padding: 1.6rem; background: rgba(14, 10, 24, .6); opacity: 0; cursor: pointer; }
.Ranking_Reward_Modal { width: 100%; max-width: 44rem; overflow: hidden; border-radius: var(--rb-radius-xl); background: #fff; box-shadow: var(--rb-shadow-3); }
.Ranking_Reward_Modal_Header { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .4rem 1.2rem; padding: 2.4rem 2.4rem 1.6rem; font: 700 1.7rem/1.4 var(--rb-font-display); color: var(--rb-violet-ink); }
.Ranking_Reward_Modal_Header b { color: var(--rb-ink); font-variant-numeric: tabular-nums; }
.Ranking_Reward_Modal_Content { padding: 0 2.4rem 2rem; font-size: 1.45rem; color: var(--rb-ink-2); }
.inv_friend_list { max-height: 32rem; margin: 0; padding: 0; overflow-y: auto; list-style: none; }
.inv_friend_list li { display: flex; justify-content: space-between; gap: 1.2rem; padding: 1.2rem 0; border-bottom: 1px solid var(--rb-line); }
.inv_friend_list li:last-child { border-bottom: 0; }
.inv_friend_nick { color: var(--rb-ink); font-weight: 600; }
.inv_friend_date { color: var(--rb-ink-3); font-variant-numeric: tabular-nums; }
.inv_friend_empty { padding: 2.4rem 0; text-align: center; line-height: 1.7; color: var(--rb-ink-3); }
.inv_friend_close { margin: 1.2rem 0 0; text-align: center; font-size: 1.2rem; color: var(--rb-ink-3); }

@media (max-width: 1023px) {
    .inv4_event1_body { grid-template-columns: minmax(0, 1fr); }
    .inv4_hero h1 { font-size: 4.2rem; }
}
@media (max-width: 767px) {
    .inv4_container { padding-top: 1.2rem; padding-bottom: 4.8rem; gap: 1.6rem; }
    .inv4_hero { padding: 4.8rem 2rem 3.2rem; border-radius: var(--rb-radius-lg); }
    .inv4_hero_pill { height: 2.8rem; font-size: 1.2rem; }
    .inv4_hero h1 { font-size: 3rem; }
    .inv4_hero_lead { font-size: 1.5rem; }
    .inv4_math { padding: 1.4rem 1.6rem; }
    .inv4_math li { flex-direction: column; gap: .2rem; font-size: 1.3rem; }
    .inv4_math b { font-size: 1.6rem; }
    .inv4_bottom_cta_inner { flex-direction: column; align-items: stretch; gap: 1.6rem; padding: 2rem; border-radius: var(--rb-radius-lg); }
    .inv4_bottom_left img { width: 4.8rem; height: 4.8rem; }
    .inv4_bottom_text { font-size: 1.4rem; }
    .inv4_bottom_text .strong { font-size: 1.8rem; }
    .inv4_copy_btn { width: 100%; }
    .inv4_section { margin-top: 4rem; }
    .inv4_section_title { font-size: 2.4rem; }
    .inv4_coin { width: 13rem; height: 13rem; }
    .inv4_coin span { font-size: 1.2rem; }
    .inv4_coin b { font-size: 1.8rem; }
    .inv4_plus { font-size: 2.4rem; }
    .inv4_event1_art { gap: .8rem; margin: 2.4rem 0; }
    .inv4_col { padding: 2.4rem 1.6rem; border-radius: var(--rb-radius-lg); }
    .inv4_col_title { font-size: 1.9rem; }
    .inv4_stat_wrapper { grid-template-columns: minmax(0, 1fr); }
    .inv4_stat { flex-direction: row; flex-wrap: wrap; align-items: baseline; justify-content: space-between; padding: 1.4rem 1.6rem; }
    .inv4_stat_more { flex-basis: 100%; }
    .inv4_stat_value { font-size: 1.6rem; }
    .inv4_event2_info { font-size: 1.6rem; }
    .inv4_event2_info .highlight { font-size: 2.2rem; }
    .inv4_event2_art { padding: 3.2rem 1.6rem; border-radius: var(--rb-radius-lg); }
    .inv4_event2_art b { font-size: 3.6rem; }
    .inv4_notice { padding: 2rem 1.6rem; font-size: 1.3rem; }
}