/* ========== Tokens ========== */
:root {
  --mint: #ECF9E4;          /* 메인 컬러 */
  --bg: #FAFDF8;
  --surface: #FFFFFF;
  --line: #D3E8C8;
  --accent: #3E7B35;
  --accent-strong: #2C5A26;
  --text: #1C2619;
  --muted: #5A6B55;
  --line-strong: #B4D6A3;
  --on-accent: #FFFFFF;     /* accent 배경 위 글자색 */
  --nav-bg: rgba(250, 253, 248, .92);
  --logo-filter: none;
  color-scheme: light;

  --radius: 14px;
  --container: 1080px;
  --section-y: 96px;
  --font: "IBM Plex Sans KR", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
          "Noto Sans KR", "Segoe UI", sans-serif;
  --w-body: 100;   /* Thin: 본문 문장 */
  --w-ui: 400;     /* Regular: 메뉴, 라벨 */
  --w-bold: 700;   /* Bold: 제목, 강조 */
}

/* 다크 모드: 시스템 설정을 따르되, 사용자가 라이트를 고른 경우는 제외 */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --mint: #1A2716;
    --bg: #10170E;
    --surface: #172113;
    --line: #2C3E26;
    --accent: #8FCB80;
    --accent-strong: #AEDD9F;
    --text: #E3EDDE;
    --muted: #9AAE93;
    --line-strong: #4F7344;
    --on-accent: #10170E;
    --nav-bg: rgba(16, 23, 14, .88);
    --logo-filter: brightness(1.45) saturate(.9);
    color-scheme: dark;
  }
}
/* 사용자가 직접 다크를 고른 경우 */
:root[data-theme="dark"] {
  --mint: #1A2716;
  --bg: #10170E;
  --surface: #172113;
  --line: #2C3E26;
  --accent: #8FCB80;
  --accent-strong: #AEDD9F;
  --text: #E3EDDE;
  --muted: #9AAE93;
  --line-strong: #4F7344;
  --on-accent: #10170E;
  --nav-bg: rgba(16, 23, 14, .88);
  --logo-filter: brightness(1.45) saturate(.9);
  color-scheme: dark;
}

/* ========== Base ========== */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  font-weight: var(--w-body);
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
}

h1, h2, h3 { margin: 0; line-height: 1.25; letter-spacing: -0.02em; }
p { margin: 0; }
a { color: var(--accent); text-decoration: none; }
img { max-width: 100%; display: block; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* 언어 전환: 현재 언어가 아닌 요소 숨김 */
html[lang="ko"] [data-lang="en"],
html[lang="en"] [data-lang="ko"] { display: none !important; }

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: var(--w-bold);
  font-size: 16px;
  border: 1.5px solid transparent;
  transition: background-color .15s, color .15s, border-color .15s;
}
.btn svg { width: 20px; height: 20px; }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-strong); }
.btn-ghost { border-color: var(--accent); color: var(--accent); }
.btn-ghost:hover { background: var(--accent); color: var(--on-accent); }
.btn-lg { min-height: 56px; padding: 0 28px; font-size: 17px; }

/* ========== Navigation ========== */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--nav-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; height: 64px; gap: 32px; }

.logo { display: inline-flex; align-items: center; }
.logo img { height: 30px; width: auto; display: block; filter: var(--logo-filter); }

.menu { display: flex; gap: 28px; margin-left: auto; }
.menu a { color: var(--muted); font-weight: var(--w-ui); font-size: 15px; }
.menu a:hover { color: var(--text); }

.nav-actions { display: flex; align-items: center; gap: 12px; }

.lang-switch {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
}
.lang-switch button {
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 13px;
  font-weight: var(--w-bold);
  color: var(--muted);
  padding: 4px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.lang-switch button[aria-pressed="true"] { background: var(--mint); color: var(--accent-strong); }

/* 테마 토글: 클릭할 때마다 시스템 → 라이트 → 다크 순환 */
.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.theme-toggle:hover { color: var(--accent-strong); border-color: var(--accent); }
.theme-toggle svg { width: 18px; height: 18px; display: none; }
.theme-toggle[data-mode="system"] .icon-system,
.theme-toggle[data-mode="light"] .icon-light,
.theme-toggle[data-mode="dark"] .icon-dark { display: block; }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  cursor: pointer;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 10px;
  right: 10px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .2s, top .2s;
}
.nav-toggle span:first-child { top: 15px; }
.nav-toggle span:last-child { top: 23px; }
.nav-toggle[aria-expanded="true"] span:first-child { top: 19px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { top: 19px; transform: rotate(-45deg); }

/* ========== Hero ========== */
.hero { background: var(--mint); border-bottom: 1px solid var(--line); }
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: 56px;
  padding-top: 88px;
  padding-bottom: 96px;
}
.eyebrow {
  font-size: 13px;
  font-weight: var(--w-bold);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.hero h1 { font-size: clamp(36px, 5.2vw, 56px); font-weight: var(--w-bold); }
.lead { margin-top: 20px; font-weight: var(--w-body); font-size: 19px; color: var(--muted); max-width: 30em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.hero-art {
  aspect-ratio: 16 / 9;
  border-radius: 20px;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--surface);
}
.hero-art img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ========== Sections ========== */
.section { padding: var(--section-y) 0; }
.section-tint { background: var(--mint); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { margin-bottom: 40px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 36px); font-weight: var(--w-bold); }
.section-desc { margin-top: 12px; font-weight: var(--w-body); color: var(--muted); }

/* ========== About ========== */
.about { display: grid; grid-template-columns: 1fr 1.6fr; gap: 56px; }
.about .section-head { margin-bottom: 0; }
.about-body p + p { margin-top: 16px; }
.about-body p { color: var(--text); font-weight: var(--w-body); }

.facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 40px 0 0;
  border-top: 1px solid var(--line);
}
.facts div { display: flex; flex-direction: column-reverse; justify-content: flex-end; padding: 20px 12px 0 0; }
.facts dt { margin-top: 4px; font-size: 14px; line-height: 1.5; color: var(--muted); }
.facts dd { margin: 0; font-size: 26px; font-weight: var(--w-bold); color: var(--accent); letter-spacing: -0.01em; }

/* ========== Games ========== */
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .15s;
}
.card:hover { border-color: var(--line-strong); }

/* 게임 스크린샷 (16:9) */
.thumb {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--line);
  background: var(--mint);
}

.card-body { display: flex; flex-direction: column; gap: 10px; padding: 22px 22px 24px; flex: 1; }
.card-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.card h3 { font-size: 21px; font-weight: var(--w-bold); }
.card p { color: var(--muted); font-weight: var(--w-body); font-size: 16px; }

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: var(--w-bold);
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
}
.badge-released { background: var(--accent); color: var(--on-accent); }
.badge-early { border-color: var(--accent); color: var(--accent); }
.badge-dev { border-color: var(--line); color: var(--muted); background: var(--bg); }
.genre { font-size: 13px; color: var(--muted); }

.stores { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 10px; }
.store {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  font-size: 14px;
  font-weight: var(--w-bold);
  color: var(--text);
  transition: background-color .15s, border-color .15s, color .15s;
}
.store::after { content: "↗"; margin-left: 6px; color: var(--muted); font-weight: var(--w-ui); }
.store:hover { background: var(--mint); border-color: var(--accent); color: var(--accent-strong); }
.store-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.store-primary::after { color: var(--on-accent); }
.store-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--on-accent); }

/* ========== Contact ========== */
.contact { text-align: center; }
.contact .section-head { margin-bottom: 32px; }
.contact-body { display: flex; flex-direction: column; align-items: center; gap: 28px; }

.socials { list-style: none; display: flex; gap: 12px; margin: 0; padding: 0; }
.socials a {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  transition: background-color .15s, color .15s, border-color .15s;
}
.socials a:hover { background: var(--mint); border-color: var(--accent); color: var(--accent-strong); }
.socials svg { width: 20px; height: 20px; }

.mail { display: flex; flex-direction: column; gap: 2px; font-size: 15px; color: var(--muted); }
.mail a { font-size: 18px; font-weight: var(--w-bold); }
.mail a:hover { text-decoration: underline; }

/* ========== Footer ========== */
.footer { border-top: 1px solid var(--line); background: var(--mint); }
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
  font-size: 14px;
  color: var(--muted);
}
.footer a { color: var(--muted); }
.footer a:hover { color: var(--text); }

/* ========== Responsive ========== */
@media (max-width: 860px) {
  :root { --section-y: 72px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding-top: 56px; padding-bottom: 64px; }
  .about { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 640px) {
  .nav-inner { gap: 12px; }
  .nav-actions { gap: 8px; }
  .logo img { height: 24px; }
  .nav-actions { margin-left: auto; }
  .nav-toggle { display: block; }
  .menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    margin: 0;
    padding: 8px 24px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }
  .menu.open { display: flex; }
  .menu a { padding: 12px 0; font-size: 17px; border-bottom: 1px solid var(--line); }
  .menu a:last-child { border-bottom: 0; }

  .hero-cta .btn { flex: 1; justify-content: center; }
  .facts dd { font-size: 20px; }
  .facts dt { font-size: 13px; }
  .game-grid { grid-template-columns: 1fr; }
}