/* Field guide. Shares the game's palette but stands alone — style.css locks the
   body to `overflow: hidden` for the canvas, and this page needs to scroll. */

:root {
  --bg: #10141a;
  --panel: #1b212b;
  --panel-2: #232b38;
  --line: #333d4d;
  --text: #e8edf5;
  --dim: #93a1b5;
  --blue: #00b2e1;
  --blue-dark: #0086ac;
  --red: #f14e54;
  --green: #00e16e;
  --yellow: #f2b134;
  --purple: #bf7ff5;
  --font: 'Trebuchet MS', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --nav-h: 58px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 18px);
}

body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* Drifting shapes behind everything, drawn by guide.js. */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  display: block;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,.022) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.022) 0 1px, transparent 1px 44px),
    radial-gradient(ellipse at 50% 0%, rgba(0,178,225,.10) 0%, transparent 55%);
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================================== nav === */
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 20px;
  background: rgba(16, 20, 26, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-brand {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -.5px;
  color: var(--blue);
  flex: 0 0 auto;
}
.nav-brand span { color: var(--text); }
.nav-links {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  flex: 1;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  padding: 6px 11px;
  border-radius: 7px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--dim);
  white-space: nowrap;
}
.nav-links a:hover { color: var(--text); background: var(--panel-2); text-decoration: none; }
.nav-links a.active { color: var(--blue); background: rgba(0,178,225,.13); }
.nav-play {
  flex: 0 0 auto;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  padding: 8px 18px;
  border-radius: 9px;
  box-shadow: 0 3px 0 var(--blue-dark);
}
.nav-play:hover { filter: brightness(1.1); text-decoration: none; }
.nav-play:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--blue-dark); }

/* ============================================================ layout === */
main { max-width: 1120px; margin: 0 auto; padding: 0 20px 100px; }

header.hero {
  text-align: center;
  padding: 76px 0 60px;
}
header.hero h1 {
  font-size: clamp(52px, 11vw, 108px);
  margin: 0;
  letter-spacing: -3px;
  color: var(--blue);
  text-shadow: 0 6px 0 var(--blue-dark);
}
header.hero h1 span { color: var(--text); text-shadow: 0 6px 0 #0e1219; }
header.hero p.lead {
  font-size: clamp(16px, 2.4vw, 20px);
  color: var(--dim);
  max-width: 620px;
  margin: 14px auto 0;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 30px;
}
.hero-stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 20px;
  min-width: 108px;
}
.hero-stat b { display: block; font-size: 26px; color: var(--blue); line-height: 1.1; }
.hero-stat span { font-size: 11.5px; color: var(--dim); text-transform: uppercase; letter-spacing: 1px; }

section { padding-top: 54px; }
section > h2 {
  font-size: clamp(26px, 4vw, 34px);
  margin: 0 0 6px;
  letter-spacing: -.6px;
  display: flex;
  align-items: center;
  gap: 12px;
}
section > h2::before {
  content: '';
  width: 5px;
  height: 30px;
  border-radius: 3px;
  background: var(--blue);
  flex: 0 0 auto;
}
section > p.sub {
  color: var(--dim);
  margin: 0 0 24px;
  max-width: 760px;
  font-size: 15.5px;
}
h3 { font-size: 19px; margin: 32px 0 12px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 24px;
}

.grid { display: grid; gap: 14px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
  transition: transform .14s ease, border-color .14s ease;
}
.card:hover { transform: translateY(-3px); border-color: #46536a; }
.card h4 { margin: 0 0 6px; font-size: 17px; display: flex; align-items: center; gap: 8px; }
.card p { margin: 0; color: var(--dim); font-size: 14px; }
.card .tag {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: .8px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--dim);
  font-weight: 700;
}

/* ============================================================= keys === */
kbd {
  display: inline-block;
  min-width: 26px;
  text-align: center;
  padding: 3px 8px;
  font-family: var(--font);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-bottom-width: 3px;
  border-radius: 6px;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}
table.data th {
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--dim);
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
}
table.data td { padding: 10px 12px; border-bottom: 1px solid rgba(51,61,77,.5); }
table.data tr:last-child td { border-bottom: none; }
table.data tbody tr:hover { background: rgba(255,255,255,.025); }
.scroll-x { overflow-x: auto; }

/* ========================================================== classes === */
.tier-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.tier-filter button {
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  padding: 7px 15px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--dim);
  cursor: pointer;
  transition: all .12s ease;
}
.tier-filter button:hover { color: var(--text); }
.tier-filter button.on { background: var(--blue); border-color: var(--blue); color: #fff; }

.tank-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(178px, 1fr)); gap: 12px; }
.tank {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  text-align: center;
  transition: transform .14s ease, border-color .14s ease;
}
.tank:hover { transform: translateY(-3px); border-color: var(--blue); }
.tank canvas { width: 116px; height: 116px; display: block; margin: 0 auto 6px; }
.tank b { display: block; font-size: 14.5px; }
.tank .tier {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .6px;
  text-transform: uppercase;
  padding: 1px 8px;
  border-radius: 999px;
  margin: 4px 0 5px;
}
.tier-0 { background: rgba(147,161,181,.2); color: var(--dim); }
.tier-1 { background: rgba(0,178,225,.18); color: var(--blue); }
.tier-2 { background: rgba(0,225,110,.16); color: var(--green); }
.tier-3 { background: rgba(242,177,52,.18); color: var(--yellow); }
.tank small { display: block; color: var(--dim); font-size: 12px; line-height: 1.45; }
.tank .ability-of {
  margin-top: 7px;
  padding-top: 7px;
  border-top: 1px solid rgba(51,61,77,.6);
  font-size: 11.5px;
  color: var(--purple);
  font-weight: 700;
}

/* ============================================================ stats === */
.stat-line { display: flex; align-items: center; gap: 12px; padding: 9px 0; }
.stat-line .sname { flex: 0 0 158px; font-weight: 700; font-size: 14px; }
.stat-line .strack {
  flex: 0 0 108px;
  height: 12px;
  border-radius: 6px;
  background: var(--panel-2);
  overflow: hidden;
  display: flex;
  gap: 2px;
  padding: 2px;
}
.stat-line .strack i { flex: 1; border-radius: 2px; }
.stat-line .sperk { flex: 1; color: var(--dim); font-size: 13.5px; }
.stat-line .sperk b { color: var(--yellow); }

/* ============================================================= tips === */
.tips { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; }
.tip {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: 12px;
  padding: 15px 18px;
}
.tip.gold { border-left-color: var(--yellow); }
.tip.red { border-left-color: var(--red); }
.tip.green { border-left-color: var(--green); }
.tip.purple { border-left-color: var(--purple); }
.tip h4 { margin: 0 0 5px; font-size: 15px; }
.tip p { margin: 0; color: var(--dim); font-size: 14px; }
.tip p + p { margin-top: 7px; }
.tip em { color: var(--text); font-style: normal; font-weight: 700; }

.callout {
  background: linear-gradient(135deg, rgba(0,178,225,.12), rgba(191,127,245,.08));
  border: 1px solid rgba(0,178,225,.3);
  border-radius: 14px;
  padding: 18px 22px;
  margin-top: 18px;
}
.callout p { margin: 0; font-size: 15px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--panel-2);
  border-radius: 999px;
  padding: 5px 13px;
  font-size: 13px;
  font-weight: 700;
  color: var(--dim);
}

footer.page {
  text-align: center;
  color: var(--dim);
  font-size: 13.5px;
  padding: 60px 20px 40px;
  border-top: 1px solid var(--line);
  margin-top: 70px;
}

#totop {
  position: fixed;
  right: 22px; bottom: 22px;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-size: 17px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s ease, transform .14s ease;
  z-index: 40;
}
#totop.show { opacity: 1; pointer-events: auto; }
#totop:hover { transform: translateY(-3px); }

@media (max-width: 860px) {
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .g3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .g2, .g3, .g4 { grid-template-columns: 1fr; }
  .nav-brand { display: none; }
  .stat-line { flex-wrap: wrap; gap: 8px; }
  .stat-line .sname { flex: 0 0 100%; }
  .stat-line .sperk { flex: 0 0 100%; }
  main { padding: 0 14px 80px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card:hover, .tank:hover, #totop:hover { transform: none; }
}