/* ZeroCell Survival — website style (ธีมเดียวกับในเกม: ทะเลลึก ฟ้าอมเขียว ทองอำพัน) */
:root {
  --bg: #050f18;
  --bg2: #0a1d2b;
  --panel: rgba(10, 32, 48, 0.78);
  --line: rgba(111, 227, 214, 0.28);
  --cyan: #6fe3d6;
  --cyan-deep: #2aa7b8;
  --gold: #e9a63a;
  --text: #e6f3f5;
  --dim: #8fa9b3;
  --bad: #ff6f7d;
  --radius: 18px;
  --max: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Kanit", "Chakra Petch", system-ui, sans-serif;
  font-weight: 300;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--cyan); }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ---------- แถบบน ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(5, 15, 24, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; gap: 18px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-family: "Chakra Petch", sans-serif; font-weight: 700; letter-spacing: 2px; }
.brand img { width: 34px; height: 34px; }
.nav .links { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.nav .links a { color: var(--dim); text-decoration: none; font-size: 15px; }
.nav .links a:hover, .nav .links a.on { color: var(--text); }
.lang {
  border: 1px solid var(--line); background: transparent; color: var(--text);
  border-radius: 999px; padding: 4px 12px; font: inherit; font-size: 13px; cursor: pointer;
}
.menu-btn { display: none; background: none; border: 0; color: var(--text); font-size: 26px; cursor: pointer; margin-left: auto; }

/* ---------- ปุ่ม ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 30px; border-radius: 999px; text-decoration: none;
  font-family: "Chakra Petch", sans-serif; font-weight: 700; letter-spacing: 1.5px; font-size: 17px;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-play { background: linear-gradient(135deg, #7ff0e2, #2aa7b8); color: #03222a; box-shadow: 0 0 34px rgba(111, 227, 214, 0.45); }
.btn-ghost { border: 1px solid var(--line); color: var(--text); background: rgba(10, 32, 48, 0.5); }
.btn-gold { background: linear-gradient(135deg, #ffd27a, #e9a63a); color: #2a1702; }

/* ---------- หน้าแรก ---------- */
.hero {
  position: relative; overflow: hidden;
  min-height: min(92vh, 820px);
  display: flex; align-items: center;
  background: radial-gradient(ellipse at 70% 45%, rgba(42, 167, 184, 0.28), transparent 60%),
              linear-gradient(180deg, rgba(5,15,24,0.2), var(--bg) 96%),
              url("img/hero-bg.webp") center/cover no-repeat;
}
.hero .wrap { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 30px; align-items: center; width: 100%; }
.eyebrow { color: var(--cyan); letter-spacing: 3px; font-size: 13px; font-family: "Chakra Petch", sans-serif; text-transform: uppercase; }
h1 { font-family: "Chakra Petch", sans-serif; font-weight: 700; font-size: clamp(40px, 7vw, 76px); line-height: 1.02; margin: 10px 0 18px; letter-spacing: 1px; }
h1 span { color: var(--cyan); text-shadow: 0 0 30px rgba(111, 227, 214, 0.55); }
.lead { font-size: clamp(17px, 2.2vw, 20px); color: #c9e2e6; max-width: 560px; }
.cta { display: flex; gap: 14px; flex-wrap: wrap; margin: 28px 0 14px; }
.note { color: var(--dim); font-size: 14px; }
.hero-art { position: relative; aspect-ratio: 1; }
.hero-art .cell { position: absolute; inset: 8%; animation: float 7s ease-in-out infinite; filter: drop-shadow(0 0 40px rgba(111, 227, 214, 0.45)); }
.hero-art .foe { position: absolute; width: 22%; animation: drift 9s ease-in-out infinite; opacity: .92; }
.hero-art .f1 { top: 2%; right: 4%; }
.hero-art .f2 { bottom: 6%; left: 0; width: 18%; animation-delay: -3s; }
.hero-art .f3 { bottom: 0; right: 10%; width: 16%; animation-delay: -5s; }
.hero-art .ring { position: absolute; inset: 3%; border: 1px dashed rgba(111, 227, 214, 0.35); border-radius: 50%; animation: spin 60s linear infinite; }
@keyframes float { 50% { transform: translateY(-14px) scale(1.02); } }
@keyframes drift { 50% { transform: translate(-12px, 10px) rotate(-6deg); } }
@keyframes spin { to { transform: rotate(360deg); } }

section { padding: 80px 0; }
h2 { font-family: "Chakra Petch", sans-serif; font-size: clamp(28px, 4vw, 40px); margin: 0 0 10px; }
.sub { color: var(--dim); margin: 0 0 36px; max-width: 640px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; position: relative; overflow: hidden;
}
.card h3 { margin: 12px 0 6px; font-family: "Chakra Petch", sans-serif; font-size: 20px; }
.card p { margin: 0; color: #b9d2d8; font-size: 15px; }
.card .icon { width: 64px; height: 64px; object-fit: contain; }

.evo { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; align-items: end; }
.evo figure { margin: 0; text-align: center; }
.evo img { width: 100%; aspect-ratio: 1; object-fit: contain; filter: drop-shadow(0 0 18px rgba(111, 227, 214, 0.3)); }
.evo figcaption { color: var(--dim); font-size: 13px; margin-top: 6px; letter-spacing: 1px; }

.band {
  background: linear-gradient(135deg, rgba(233, 166, 58, 0.14), rgba(42, 167, 184, 0.12));
  border: 1px solid rgba(233, 166, 58, 0.35); border-radius: 24px; padding: 36px;
  display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center;
}
.band h2 { color: var(--gold); }

/* ---------- ตาราง ranking ---------- */
.tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.tab { border: 1px solid var(--line); background: transparent; color: var(--dim); border-radius: 999px; padding: 8px 18px; font: inherit; cursor: pointer; }
.tab.on { color: #03222a; background: var(--cyan); border-color: var(--cyan); }
table.rank { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.rank th, .rank td { padding: 14px 16px; text-align: left; border-bottom: 1px solid rgba(111, 227, 214, 0.12); }
.rank th { color: var(--cyan); font-weight: 500; font-size: 14px; letter-spacing: 1px; }
.rank td.num { font-family: "Chakra Petch", sans-serif; font-weight: 700; }
.rank tr:nth-child(2) td.num { color: #ffd27a; }
.rank tr:nth-child(3) td.num { color: #d5e4ea; }
.rank tr:nth-child(4) td.num { color: #e0a36c; }
.empty { text-align: center; color: var(--dim); padding: 40px 16px !important; }

/* ---------- ร้านค้า ---------- */
.shop-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.offer .price { font-family: "Chakra Petch", sans-serif; font-size: 30px; color: var(--gold); margin: 10px 0; }
.offer ul { padding-left: 18px; color: #b9d2d8; margin: 10px 0 18px; }
.offer.best { border-color: rgba(233, 166, 58, 0.6); box-shadow: 0 0 40px rgba(233, 166, 58, 0.15); }
.badge { position: absolute; top: 16px; right: 16px; background: var(--gold); color: #2a1702; border-radius: 999px; font-size: 12px; padding: 3px 10px; font-weight: 500; }
.soon { opacity: .55; pointer-events: none; }

/* ---------- เอกสาร ---------- */
.doc { max-width: 780px; }
.doc h1 { font-size: clamp(32px, 5vw, 46px); }
.doc h2 { font-size: 22px; margin-top: 34px; }
.doc p, .doc li { color: #c6dde2; }
.draft { border: 1px dashed var(--gold); color: var(--gold); padding: 10px 14px; border-radius: 12px; font-size: 14px; }

/* ---------- ท้ายหน้า ---------- */
footer { border-top: 1px solid var(--line); padding: 34px 0 44px; color: var(--dim); font-size: 14px; }
footer .wrap { display: flex; gap: 20px; flex-wrap: wrap; justify-content: space-between; }
footer a { color: var(--dim); text-decoration: none; margin-right: 16px; }
footer a:hover { color: var(--text); }

/* ---------- มือถือ ---------- */
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; text-align: center; padding-top: 30px; padding-bottom: 40px; }
  .hero-art { width: 100%; max-width: 300px; margin: 0 auto; order: -1; }
  .lead { margin: 0 auto; }
  .cta { justify-content: center; }
  .grid3, .shop-grid { grid-template-columns: 1fr; }
  .evo { grid-template-columns: repeat(3, 1fr); }
  .evo figure:nth-child(n+4) { display: none; }
  .band { grid-template-columns: 1fr; text-align: center; }
  .nav .links { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: var(--bg2); padding: 16px 20px; gap: 14px; border-bottom: 1px solid var(--line); }
  .nav .links.open { display: flex; }
  .menu-btn { display: block; }
  section { padding: 56px 0; }
  .rank th:nth-child(4), .rank td:nth-child(4) { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* เนื้อหายาวแยกสองภาษา */
html[lang="en"] .only-th { display: none; }
html[lang="th"] .only-en { display: none; }