/* ============================================================
   게임 허브 — hub.css
   다크 게이밍 테마 (Steam/Epic 느낌)
   ============================================================ */

:root {
  /* 배경 계열 */
  --bg-0: #0d1117;
  --bg-1: #131926;
  --bg-2: #1a2233;
  --bg-elevated: #1c2434;

  /* 텍스트 */
  --text-1: #e6edf3;
  --text-2: #aab4c4;
  --text-3: #6b7686;

  /* 포인트 컬러 (네온 퍼플 / 시안) */
  --accent-purple: #a855f7;
  --accent-cyan: #22d3ee;
  --accent-purple-dim: rgba(168, 85, 247, 0.35);
  --accent-cyan-dim: rgba(34, 211, 238, 0.3);

  /* 보더 / 표면 */
  --border-1: rgba(255, 255, 255, 0.08);
  --border-2: rgba(255, 255, 255, 0.14);

  /* 레이아웃 */
  --radius: 16px;
  --radius-sm: 8px;
  --maxw: 1240px;

  --font-stack: "Pretendard", "Pretendard Variable", "Noto Sans KR",
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-stack);
  color: var(--text-1);
  background-color: var(--bg-0);
  background-image:
    radial-gradient(1200px 600px at 15% -10%, rgba(168, 85, 247, 0.12), transparent 60%),
    radial-gradient(1000px 500px at 100% 0%, rgba(34, 211, 238, 0.1), transparent 55%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 헤더 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(13, 17, 23, 0.72);
  border-bottom: 1px solid var(--border-1);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  text-decoration: none;
}

.brand__mark {
  font-size: 1.5rem;
  filter: drop-shadow(0 0 10px var(--accent-purple-dim));
}

.brand__title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-1);
}

.brand__sub {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.header-meta {
  font-size: 0.85rem;
  color: var(--text-3);
}

/* ---------- 히어로 ---------- */
.hero {
  padding: 64px 0 40px;
  text-align: center;
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.hero h1 .grad {
  background: linear-gradient(100deg, var(--accent-purple), var(--accent-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  margin: 0 auto;
  max-width: 560px;
  color: var(--text-2);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  line-height: 1.6;
}

/* ---------- 툴바 (개수 표시) ---------- */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 8px 0 24px;
  flex-wrap: wrap;
}

.toolbar__label {
  font-size: 1.05rem;
  font-weight: 700;
}

.toolbar__count {
  font-size: 0.85rem;
  color: var(--text-3);
  padding: 4px 12px;
  border: 1px solid var(--border-1);
  border-radius: 999px;
  background: var(--bg-1);
}

/* ---------- 카드 그리드 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  padding-bottom: 64px;
}

@media (max-width: 1080px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 780px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .grid { grid-template-columns: 1fr; }
}

/* ---------- 게임 카드 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-1);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.2, 0.7, 0.2, 1),
    box-shadow 0.25s ease, border-color 0.25s ease;
  will-change: transform;
}

.card:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--border-2);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.5),
    0 0 0 1px var(--accent-purple-dim),
    0 8px 40px -8px var(--accent-purple-dim);
}

/* 상단 강조 라인 (호버 시 나타남) */
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
  opacity: 0;
  transition: opacity 0.25s ease;
  z-index: 2;
}
.card:hover::before { opacity: 1; }

/* 썸네일 영역 */
.card__thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* emoji 폴백 (그라디언트 배경) */
.card__thumb--emoji {
  background: var(--card-grad, linear-gradient(135deg, #2a2140, #163043));
}

.card__thumb--emoji::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 40%, rgba(255, 255, 255, 0.14), transparent 60%);
  pointer-events: none;
}

.card__emoji {
  font-size: clamp(3rem, 8vw, 4.2rem);
  line-height: 1;
  filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.45));
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.card:hover .card__emoji { transform: scale(1.12) rotate(-3deg); }

/* 카드 본문 */
.card__body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 16px 18px;
  flex: 1;
}

.card__titles {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.card__title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card__title-en {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

.card__desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-2);
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 10px;
}

.tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-cyan);
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--accent-cyan-dim);
  border: 1px solid rgba(34, 211, 238, 0.25);
}

.card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.card__date {
  font-size: 0.72rem;
  color: var(--text-3);
}

.card__play {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-purple);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: transform 0.2s ease;
}
.card:hover .card__play { transform: translateX(3px); }

/* ---------- 상태 메시지 (빈 상태 / 로딩 / 에러) ---------- */
.state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 72px 20px;
  border: 1px dashed var(--border-2);
  border-radius: var(--radius);
  background: var(--bg-1);
  color: var(--text-2);
}

.state__icon {
  font-size: 2.6rem;
  margin-bottom: 14px;
  opacity: 0.85;
}

.state__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-1);
  margin: 0 0 8px;
}

.state__desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-3);
}

/* 로딩 스켈레톤 */
.skeleton {
  border: 1px solid var(--border-1);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-1);
}
.skeleton__thumb {
  aspect-ratio: 16 / 10;
  background: linear-gradient(100deg, var(--bg-2) 30%, var(--bg-elevated) 50%, var(--bg-2) 70%);
  background-size: 200% 100%;
  animation: shimmer 1.3s infinite linear;
}
.skeleton__body { padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.skeleton__line {
  height: 12px;
  border-radius: 6px;
  background: linear-gradient(100deg, var(--bg-2) 30%, var(--bg-elevated) 50%, var(--bg-2) 70%);
  background-size: 200% 100%;
  animation: shimmer 1.3s infinite linear;
}
.skeleton__line--short { width: 55%; }

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* 카드 등장 애니메이션 */
@keyframes cardIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.card { animation: cardIn 0.45s both; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- 푸터 ---------- */
.site-footer {
  border-top: 1px solid var(--border-1);
  padding: 32px 0 48px;
  text-align: center;
  color: var(--text-3);
}
.site-footer strong {
  color: var(--text-2);
  font-weight: 700;
}
.site-footer .foot-sub {
  margin-top: 8px;
  font-size: 0.8rem;
}