/* ===================================================================
   공통 디자인 시스템 — 귀엽고 깔끔한 초등학생용 테마 🌸
   색/폰트/버튼 느낌을 바꾸고 싶으면 여기 변수만 고치면 전부 반영돼요.
   =================================================================== */
:root {
  --bg-1:      #fff5fb;   /* 연분홍 */
  --bg-2:      #eefaff;   /* 연하늘 */
  --card:      #ffffff;
  --line:      #ffe1ef;
  --text:      #4a4363;   /* 진보라 회색 (부드러운 검정) */
  --text-dim:  #9a93b5;
  --pink:      #ff87b8;
  --pink-deep: #ff5fa2;
  --mint:      #4fd1c5;
  --sky:       #5cc8ff;
  --yellow:    #ffcf5c;
  --purple:    #b18cff;
  --good:      #4ecb8f;
  --bad:       #ff7a7a;
  --radius:    24px;
  --shadow:    0 12px 28px rgba(255, 145, 190, .22);
  --shadow-sm: 0 6px 16px rgba(150, 140, 190, .16);
  --maxw:      720px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background:
    radial-gradient(900px 500px at 85% -5%, #ffe3f3, transparent 60%),
    radial-gradient(800px 500px at -5% 105%, #dff4ff, transparent 55%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2));
  background-attachment: fixed;
  color: var(--text);
  font-family: "Pretendard", "Jua", -apple-system, BlinkMacSystemFont,
               "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 18px 18px 64px; }

/* ---------- 상단 바 (대문으로 돌아가기) ---------- */
.topbar { display: flex; align-items: center; gap: 12px; padding: 4px 0 14px; }
.back-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-dim); text-decoration: none; font-size: 15px; font-weight: 700;
  padding: 9px 16px; border-radius: 999px;
  background: #fff; box-shadow: var(--shadow-sm); transition: .15s;
}
.back-link:hover { color: var(--pink-deep); transform: translateY(-2px); }

/* ---------- 타이틀 ---------- */
.hero { text-align: center; padding: 8px 0 24px; }
.hero h1 {
  font-size: clamp(30px, 8vw, 46px); margin: 0 0 8px; line-height: 1.15;
  color: var(--pink-deep);
  text-shadow: 2px 3px 0 #fff, 4px 5px 0 rgba(255,145,190,.25);
}
.hero p { color: var(--text-dim); margin: 0; font-size: 16px; font-weight: 600; }

/* ---------- 게임 목록 카드 그리드 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
}
.card {
  display: block; text-decoration: none; color: inherit;
  background: var(--card); border: 3px solid var(--line);
  border-radius: var(--radius); padding: 22px 18px;
  box-shadow: var(--shadow-sm);
  transition: transform .15s, box-shadow .15s, border-color .15s;
  position: relative; overflow: hidden; text-align: center;
}
.card:hover { transform: translateY(-6px) rotate(-1deg); box-shadow: var(--shadow); border-color: var(--pink); }
.card .emoji { font-size: 52px; display: block; margin-bottom: 10px; filter: drop-shadow(0 4px 6px rgba(0,0,0,.08)); }
.card h3 { margin: 0 0 6px; font-size: 18px; color: var(--text); }
.card p { margin: 0; color: var(--text-dim); font-size: 13px; line-height: 1.5; }
.card .tag {
  position: absolute; top: 12px; right: 12px; font-size: 11px; font-weight: 800;
  color: #fff; background: var(--yellow); border-radius: 999px; padding: 3px 10px;
}

/* ---------- 게임 안 공통 패널 ---------- */
.panel {
  background: var(--card); border: 3px solid var(--line);
  border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm);
}

/* ---------- 버튼 ---------- */
.btn {
  appearance: none; border: none; cursor: pointer; font: inherit;
  font-weight: 800; color: #fff;
  background: linear-gradient(160deg, var(--pink), var(--pink-deep));
  padding: 16px 22px; border-radius: 18px; font-size: 17px; width: 100%;
  box-shadow: 0 6px 0 #ff9ec6, 0 10px 16px rgba(255,95,162,.28);
  transition: transform .08s, box-shadow .08s, filter .15s;
}
.btn:hover { filter: brightness(1.05); }
.btn:active { transform: translateY(4px); box-shadow: 0 2px 0 #ff9ec6, 0 4px 8px rgba(255,95,162,.28); }
.btn:disabled { opacity: .55; cursor: not-allowed; box-shadow: none; }
.btn.mint  { background: linear-gradient(160deg, #6fe0d6, var(--mint)); box-shadow: 0 6px 0 #92e6dd, 0 10px 16px rgba(79,209,197,.28); }
.btn.sky   { background: linear-gradient(160deg, #86d7ff, var(--sky));  box-shadow: 0 6px 0 #a6e0ff, 0 10px 16px rgba(92,200,255,.28); }
.btn.purple{ background: linear-gradient(160deg, #c6a8ff, var(--purple));box-shadow: 0 6px 0 #d3bcff, 0 10px 16px rgba(177,140,255,.28); }
.btn.secondary { background: #fff; color: var(--text-dim); box-shadow: 0 4px 0 var(--line); }
.btn-row { display: flex; gap: 12px; }
.btn-row .btn { width: auto; flex: 1; }

/* 큰 선택지 버튼 (밸런스 게임 등) */
.choice {
  display: block; width: 100%; cursor: pointer; font: inherit; font-weight: 800;
  color: var(--text); background: #fff; border: 3px solid var(--line);
  border-radius: 20px; padding: 22px; font-size: 18px; margin-bottom: 14px;
  box-shadow: var(--shadow-sm); transition: transform .12s, border-color .12s;
}
.choice:hover { transform: scale(1.02); border-color: var(--pink); }
.choice:active { transform: scale(.98); }

/* ---------- 입력 ---------- */
.input {
  width: 100%; font: inherit; font-size: 22px; font-weight: 700; text-align: center;
  color: var(--text); background: #fff; border: 3px solid var(--line);
  border-radius: 18px; padding: 16px; outline: none; transition: border-color .15s;
}
.input:focus { border-color: var(--pink); }
.input::placeholder { color: #d9d2ea; }

/* ---------- 유틸 ---------- */
.center { text-align: center; }
.dim { color: var(--text-dim); }
.big { font-size: clamp(44px, 13vw, 76px); font-weight: 900; }
.mt { margin-top: 18px; }
.mt-sm { margin-top: 10px; }
.hidden { display: none !important; }

.footer { text-align: center; color: var(--text-dim); font-size: 13px; font-weight: 600; margin-top: 40px; }
.footer-link {
  display: flex; align-items: center; justify-content: center; gap: 7px;
  font-size: 14px; font-weight: 800; margin-top: 14px;
  color: var(--text); text-decoration: none; opacity: 0.85; transition: opacity .15s;
}
.footer-link:hover { opacity: 1; }
.footer-link .yt-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 15px; background: #FF3B3B; border-radius: 5px; flex-shrink: 0;
}
.footer-link .yt-icon::after {
  content: ''; width: 0; height: 0; border-style: solid;
  border-width: 4px 0 4px 7px; border-color: transparent transparent transparent #fff;
  margin-left: 2px;
}

@keyframes pop  { 0% { transform: scale(.6); opacity: 0; } 60% { transform: scale(1.12); } 100% { transform: scale(1); opacity: 1; } }
@keyframes wobble { 0%,100%{transform:rotate(0)} 25%{transform:rotate(-4deg)} 75%{transform:rotate(4deg)} }
@keyframes floaty { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
.pop { animation: pop .3s ease-out; }
.wobble { animation: wobble .5s ease-in-out; }
.floaty { animation: floaty 2.5s ease-in-out infinite; }