/* 솔리테어(클론다이크) — 초록 카드 테이블 UI (자체 테마, 사이트 라이트/다크 동일) */
#sl-game { --cw:48px; --ch:68px; --gap:5px; --fr:19px; --fs:14px; --fb:26px;
    position:relative; width:100%; max-width:100%; margin:0 auto; border:1px solid #1f5140; border-radius:20px; overflow:hidden;
    background:linear-gradient(180deg,#125340,#0a3125); color:#eaf6f0; box-shadow:0 18px 45px rgba(4,28,20,.35);
    user-select:none; -webkit-user-select:none; }
#sl-game, #sl-game * { box-sizing:border-box; }
#sl-game [hidden] { display:none !important; }
#sl-game button { font-family:inherit; }
#sl-game button:focus-visible { outline:3px solid #ffd166; outline-offset:-3px; }

/* ── 툴바 ── */
.sl-toolbar { display:flex; align-items:center; justify-content:space-between; gap:8px; padding:11px 14px;
    background:linear-gradient(110deg,#17604a,#0d3e30); border-bottom:1px solid #ffffff12; }
.sl-brand { display:flex; align-items:center; gap:9px; min-width:0; font-weight:900; letter-spacing:.14em; font-size:.72rem; color:#ffe08a; }
.sl-brand > i { font-size:20px; color:#ffd166; }
.sl-brand small { display:block; margin-top:2px; font-size:.64rem; font-weight:600; color:#bfe0d2; letter-spacing:.02em; }
.sl-seg { display:flex; gap:0; flex-shrink:0; border:1px solid #ffffff26; border-radius:9px; overflow:hidden; background:#00000022; }
.sl-seg button { min-height:34px; padding:0 11px; border:0; background:transparent; color:#cfe8dc; font-weight:700; font-size:.74rem; cursor:pointer; white-space:nowrap; }
.sl-seg button.on { background:linear-gradient(135deg,#ffd166,#f0ad3b); color:#25200a; }
@media (max-width:420px) { .sl-brand small { display:none; } .sl-brand { letter-spacing:.08em; } }

/* ── HUD ── */
.sl-hud { display:grid; grid-template-columns:repeat(4,1fr); gap:6px; padding:11px 12px 7px; }
.sl-hud > div { text-align:center; border-left:1px solid #ffffff14; }
.sl-hud > div:first-child { border-left:0; }
.sl-hud small { display:block; font-size:.62rem; font-weight:600; color:#a9cdbb; letter-spacing:.03em; }
.sl-hud strong { display:block; line-height:1.4; font-size:1.02rem; font-weight:800; font-variant-numeric:tabular-nums; }
.sl-hud .sl-scorebox strong { color:#ffd166; font-size:1.26rem; }

/* ── 판 ── */
#sl-stage { position:relative; margin:0 9px; padding:9px; border:1px solid #ffffff14; border-radius:14px; touch-action:pan-y;
    background:radial-gradient(120% 90% at 50% 0%,#1a6a51 0%,#0b3527 100%); }
#sl-top { display:grid; grid-template-columns:repeat(7,1fr); gap:var(--gap); margin-bottom:calc(var(--gap) * 2.2); }
#sl-tab { display:grid; grid-template-columns:repeat(7,1fr); gap:var(--gap); align-items:start; }
.sl-slot, .sl-col { position:relative; min-height:var(--ch); border-radius:calc(var(--cw) * .13); }
.sl-slot { height:var(--ch); }
.sl-waste { grid-column:span 2; }
.sl-slot.empty, .sl-col.empty { box-shadow:inset 0 0 0 2px #ffffff22; background:#00000020; }
.sl-slot.empty { display:flex; align-items:center; justify-content:center; }
.sl-ghost { font-size:var(--fb); color:#ffffff2e; font-style:normal; }
.sl-ghost.red { color:#ff9a9a2e; }
.sl-recycle { font-size:var(--fb); color:#ffffff3a; font-style:normal; }
.sl-stock { cursor:pointer; touch-action:none; }
.sl-stock:active { transform:scale(.97); }

/* ── 카드 ── */
.sl-card { position:absolute; left:0; width:var(--cw); height:var(--ch); border-radius:calc(var(--cw) * .13);
    background:#fffdf7; box-shadow:0 1px 0 #00000022, 0 2px 5px #00000055; overflow:hidden;
    font-variant-numeric:tabular-nums; line-height:1; }
.sl-card.red  { color:#d62828; }
.sl-card.black{ color:#17202a; }
.sl-card.back { background:repeating-linear-gradient(45deg,#2a4d8f 0 6px,#22407a 6px 12px); box-shadow:inset 0 0 0 2px #ffffff30, 0 2px 5px #00000055; }
.sl-card .sl-r { position:absolute; left:8%; top:4%; font-size:var(--fr); font-weight:900; letter-spacing:-.04em; }
.sl-card .sl-s { position:absolute; left:8%; top:calc(4% + var(--fr) * .96); font-size:var(--fs); font-weight:700; }
.sl-card .sl-big { position:absolute; right:4%; bottom:1%; font-size:var(--fb); opacity:.20; font-weight:700; }
.sl-grab { cursor:grab; touch-action:none; }
.sl-lift { opacity:.34; }
.sl-hi { box-shadow:0 0 0 3px #ffd166, 0 0 16px #ffd166cc; animation:slHi .55s ease-in-out infinite alternate; z-index:4; }
.sl-slot.sl-hi, .sl-col.sl-hi { box-shadow:inset 0 0 0 3px #ffd166, 0 0 16px #ffd16688; }
@keyframes slHi { from { filter:brightness(1); } to { filter:brightness(1.18); } }
.sl-drop { box-shadow:inset 0 0 0 3px #6ee7b7, 0 0 18px #6ee7b766 !important; }
.sl-col.sl-drop, .sl-slot.sl-drop { background:#6ee7b722; }

/* 드래그 레이어 */
#sl-drag { position:fixed; left:0; top:0; width:0; height:0; pointer-events:none; z-index:9999; }
#sl-drag.on { width:100%; height:100%; }
.sl-dragstack { position:absolute; left:0; top:0; will-change:transform; filter:drop-shadow(0 10px 14px rgba(0,0,0,.45)); }
.sl-dragstack .sl-card { position:absolute; }

/* ── 조작 버튼 ── */
.sl-controls { display:grid; grid-template-columns:repeat(5,1fr); gap:6px; padding:11px 9px 12px; }
.sl-controls button { min-height:46px; padding:6px 2px; border-radius:11px; border:1px solid #ffffff24; background:#ffffff10; color:#eaf6f0;
    font-weight:800; font-size:.78rem; cursor:pointer; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:2px; }
.sl-controls button small { font-size:.6rem; font-weight:600; color:#a9cdbb; }
.sl-controls button:disabled { opacity:.38; cursor:default; }
.sl-controls button:active:not(:disabled) { transform:translateY(1px); }
#sl-auto { background:linear-gradient(135deg,#6ee7b7,#2fb381); border-color:#9bf0cf; color:#062b1f; }
#sl-auto small { color:#0a3a2a; }

/* ── 토스트 ── */
#sl-toast { position:absolute; left:50%; bottom:10px; transform:translateX(-50%) translateY(8px); max-width:92%;
    padding:9px 15px; border-radius:999px; background:#06241bef; border:1px solid #ffffff24; color:#eaf6f0; font-size:.8rem; font-weight:700;
    opacity:0; pointer-events:none; transition:opacity .18s, transform .18s; z-index:6; text-align:center; }
#sl-toast.on { opacity:1; transform:translateX(-50%) translateY(0); }

/* ── 오버레이 패널 ── */
.sl-overlay { position:absolute; inset:0; display:none; align-items:center; justify-content:center; padding:16px; z-index:20;
    background:radial-gradient(120% 90% at 50% 20%,#0c3d2ef2,#04201793); backdrop-filter:blur(3px); }
.sl-overlay.on { display:flex; }
.sl-panel { width:100%; max-width:430px; max-height:100%; overflow:auto; text-align:center; padding:20px 18px;
    border:1px solid #ffffff1f; border-radius:18px; background:linear-gradient(180deg,#0f4735,#082a1f); box-shadow:0 20px 45px #00000066; }
.sl-eyebrow { display:inline-block; padding:4px 11px; border-radius:999px; background:#ffd16622; color:#ffd166; font-size:.68rem; font-weight:800; letter-spacing:.04em; }
.sl-panel h2 { margin:11px 0 8px; font-size:1.22rem; font-weight:900; color:#fff; line-height:1.35; }
.sl-panel p { margin:0 0 13px; font-size:.86rem; line-height:1.72; color:#cfe8dc; }
.sl-panel p b { color:#ffe08a; }
.sl-primary { width:100%; min-height:52px; margin-top:6px; border:0; border-radius:13px; cursor:pointer;
    background:linear-gradient(135deg,#ffd166,#f0972b); color:#26200a; font-size:1rem; font-weight:900; }
.sl-primary:active { transform:translateY(1px); }
.sl-panel > small { display:block; margin-top:9px; font-size:.7rem; color:#9dc4b3; }
#sl-intro-best, #sl-res-best { margin:10px 0 2px; font-size:.8rem; font-weight:800; color:#ffd166; }
.sl-demo { display:flex; justify-content:center; gap:7px; margin:4px 0 13px; }
.sl-demo i { width:34px; height:48px; border-radius:5px; font-style:normal; font-size:15px; font-weight:900;
    display:flex; align-items:center; justify-content:center; background:#fffdf7; box-shadow:0 3px 8px #00000055; animation:slFloat 2.4s ease-in-out infinite; }
.sl-demo i:nth-child(2) { animation-delay:.3s; } .sl-demo i:nth-child(3) { animation-delay:.6s; }
.sl-demo i.r { color:#d62828; } .sl-demo i.b { color:#17202a; }
@keyframes slFloat { 0%,100% { transform:translateY(0); } 50% { transform:translateY(-7px); } }
#sl-newrecord { display:inline-block; margin-bottom:8px; padding:4px 12px; border-radius:999px; background:#ffd166; color:#2a2208; font-size:.72rem; font-weight:900; }
#sl-final { display:block; font-size:3.1rem; font-weight:900; color:#ffd166; line-height:1.1; font-variant-numeric:tabular-nums; }
.sl-final-unit { font-size:.9rem; font-weight:800; color:#cfe8dc; }
#sl-res-grade { margin:10px 0 4px; font-size:.94rem; font-weight:800; color:#fff; }
#sl-res-detail { display:grid; grid-template-columns:repeat(3,1fr); gap:7px; margin:14px 0 4px; }
#sl-res-detail span { display:block; padding:8px 4px; border-radius:10px; background:#ffffff0f; font-size:.66rem; color:#a9cdbb; font-weight:600; }
#sl-res-detail b { display:block; font-size:.92rem; color:#fff; font-weight:800; margin-bottom:2px; font-variant-numeric:tabular-nums; }

/* ── 규칙 안내(전역 .answer_shadow 는 가운데 정렬·상단 여백 0·font-size 1.1em) ──
   ★글자 크기를 반드시 눌러 줄 것 — 안 그러면 1.1em(=17.6px)을 그대로 상속해
     사천성(.sh-guide)·물 정렬(.ws-guide) .88rem, 과일 합치기(.fm-guide) .9rem 보다 눈에 띄게 크다★ */
.sl-guide { text-align:left; line-height:1.7; margin-top:16px; font-size:.9rem; }
.sl-guide h3 { margin:0 0 10px; font-size:1rem; font-weight:800; }
.sl-guide p { margin:0 0 8px; font-size:.9rem; line-height:1.75; }
.sl-guide small { display:block; margin-top:10px; font-size:.8rem; opacity:.75; line-height:1.7; }

@media (prefers-reduced-motion:reduce) {
    .sl-hi, .sl-demo i { animation:none !important; }
    #sl-toast { transition:none; }
}
@media (min-width:760px) {
    #sl-stage { padding:14px; }
    .sl-controls { grid-template-columns:repeat(5,1fr); max-width:620px; margin:0 auto; }
}