/* Sweax Terrain website. Colours come from the terrain itself: haze and night sky for the page,
   grass for actions, water for links, lava for erasing. Type: Overpass (from Highway Gothic,
   the lettering of road and park signs). */
:root {
  --sky: #eef2f0;
  --sky-2: #e2e9e6;
  --ink: #15201b;
  --ink-2: #4b5852;
  --ink-3: #75817b;
  --line: #ccd6d1;
  --grass: #4c7d29;
  --grass-2: #3d6a1f;
  --on-grass: #ffffff;
  --water: #2a679a;
  --lava: #c9501f;
  --shadow: rgba(30, 48, 38, 0.22);
  --vp-a: #c8dced;
  --vp-b: #eef4f7;
  --mono: "Overpass Mono", ui-monospace, Consolas, monospace;
  --sans: "Overpass", system-ui, "Segoe UI", sans-serif;
  --spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --sky: #0d1311;
    --sky-2: #121a17;
    --ink: #e6ece8;
    --ink-2: #a3afa8;
    --ink-3: #75817b;
    --line: #223029;
    --grass: #8cc157;
    --grass-2: #a2d36c;
    --on-grass: #0d1311;
    --water: #78b6ec;
    --lava: #ff7b45;
    --shadow: rgba(0, 0, 0, 0.55);
    --vp-a: #20303d;
    --vp-b: #121c22;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--sky);
  color: var(--ink);
  font: 400 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--water); text-underline-offset: 3px; }
code { font: 500 0.88em var(--mono); background: var(--sky-2); padding: 0.1em 0.4em; border-radius: 4px; }
h1, h2 { font-weight: 900; letter-spacing: -0.02em; line-height: 1.12; margin: 0; }
h1 { font-size: clamp(48px, 7vw, 96px); }
h2 { font-size: clamp(32px, 4.2vw, 56px); }
section { max-width: 1240px; margin: 0 auto; padding: 96px 32px 0; }
.sec-head { max-width: 760px; margin-bottom: 36px; }
.sec-head p { color: var(--ink-2); font-size: 19px; margin: 14px 0 0; }
.note, .small { color: var(--ink-3); font-size: 14px; }
.note { margin: 18px 0 0; max-width: 820px; }

/* header */
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 28px;
  padding: 12px 32px;
  background: var(--sky);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; font-size: 18px; }
.brand svg { width: 30px; height: 30px; }
.m-top { fill: #6f9d3c; } .m-left { fill: #8a6a45; } .m-right { fill: #6b7075; } .m-peak { fill: #f4f6fa; }
.top nav { display: flex; gap: 22px; margin-left: auto; }
.top nav a { color: var(--ink-2); text-decoration: none; font-weight: 600; font-size: 15px; }
.top nav a:hover { color: var(--ink); }
.lang {
  font: 700 13px var(--sans); color: var(--ink-3); background: none;
  border: 1px solid var(--line); border-radius: 6px; padding: 6px 10px; cursor: pointer;
}
.lang b { color: var(--ink); }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 7px;
  font: 700 16px var(--sans); text-decoration: none;
  color: var(--ink); border: 1.5px solid var(--line); background: transparent;
  transition: transform 0.35s var(--spring), background 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(1px) scale(0.98); }
.btn.go { background: var(--grass); border-color: var(--grass); color: var(--on-grass); }
.btn.go:hover { background: var(--grass-2); }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 24px 40px; align-items: center; padding-top: 72px; }
.lead { font-size: 21px; color: var(--ink-2); margin: 20px 0 28px; max-width: 520px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .small { margin-top: 16px; }
.hero-art { margin: 0 -40px 0 0; position: relative; }
.hero-art::after, .float-shadow::after {
  content: ""; position: absolute; left: 14%; right: 14%; bottom: -2%; height: 9%;
  background: radial-gradient(closest-side, var(--shadow), transparent); z-index: -1;
}
.float img { animation: float 7s ease-in-out infinite; }
@keyframes float { 50% { transform: translateY(-10px); } }
.facts { grid-column: 1 / -1; list-style: none; display: flex; flex-wrap: wrap; gap: 0; margin: 18px 0 0; padding: 22px 0 0; border-top: 1px solid var(--line); }
.facts li { flex: 1 1 200px; padding: 6px 24px 6px 0; color: var(--ink-2); font-size: 16px; }
.facts b { display: block; font-size: 38px; font-weight: 900; color: var(--ink); line-height: 1.1; }

/* the studio window around the demo */
.studio {
  --st-bg: #2b2b2b; --st-panel: #333; --st-panel2: #3d3d3d; --st-line: #444; --st-text: #e9e9e9;
  --st-sub: #b4b4b4; --st-input: #232323; --st-grass: #549c52; --st-water: #3e82c4; --st-lava: #cc523c;
  border-radius: 10px; overflow: hidden; background: var(--st-bg);
  box-shadow: 0 30px 60px -30px var(--shadow), 0 0 0 1px rgba(0, 0, 0, 0.25);
}
.studio-bar { display: flex; justify-content: space-between; padding: 8px 14px; background: #1f1f1f; color: #cfcfcf; font: 600 13px var(--sans); }
.studio-seed { font-family: var(--mono); color: #9a9a9a; }
.studio-body { display: grid; grid-template-columns: 340px minmax(0, 1fr); height: 680px; }
.viewport { position: relative; background: linear-gradient(180deg, var(--vp-a), var(--vp-b)); }
.viewport canvas { width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; }
.viewport canvas.tool { cursor: crosshair; }
.vp-hint { position: absolute; left: 14px; bottom: 12px; font-size: 13px; color: var(--ink-2); pointer-events: none; }
.vp-struct { position: absolute; top: 12px; right: 12px; width: 190px; margin: 0; background: rgba(20, 20, 20, 0.72); border-radius: 8px; padding: 8px; color: #eee; font-size: 13px; }
.vp-struct figcaption { text-align: center; margin-top: 2px; }
.vp-fallback[hidden], .vp-struct[hidden] { display: none; }
.vp-fallback { position: absolute; inset: 0; display: grid; place-items: center; padding: 30px; text-align: center; color: var(--ink-2); }

/* panel copy (dark Studio widget, same layout as src/Arayuz.lua) */
.sp { display: flex; flex-direction: column; min-height: 0; background: var(--st-bg); color: var(--st-text); font: 500 13px/1.3 var(--sans); }
.sp-tabs { display: flex; border-bottom: 1px solid var(--st-line); }
.sp-tab { flex: 1; background: none; border: 0; color: var(--st-sub); font: 700 13px var(--sans); padding: 11px 0 9px; cursor: pointer; border-bottom: 2px solid transparent; }
.sp-tab.on { color: var(--st-text); border-bottom-color: var(--st-grass); }
.sp-body { flex: 1; overflow-y: auto; padding: 4px 8px 12px; scrollbar-width: thin; scrollbar-color: #555 transparent; }
.sp-pane { display: flex; flex-direction: column; gap: 6px; }
.sp-head { font-weight: 700; padding: 10px 2px 0; }
.sp-card { background: var(--st-panel); border-radius: 4px; padding: 6px 10px; }
.sp-row { display: flex; align-items: center; gap: 8px; min-height: 26px; }
.sp-label { flex: 0 0 44%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sp-checkrow .sp-label { flex: 1 1 auto; }
.sp-val { flex: 0 0 52px; text-align: right; color: var(--st-sub); font-size: 12px; font-family: var(--mono); }
.sp-range { flex: 1; min-width: 0; -webkit-appearance: none; appearance: none; height: 4px; border-radius: 2px; cursor: pointer;
  background: linear-gradient(90deg, var(--st-water) var(--f, 50%), var(--st-input) var(--f, 50%)); }
.sp-range::-webkit-slider-thumb { -webkit-appearance: none; width: 6px; height: 16px; border-radius: 2px; background: var(--st-text); }
.sp-range::-moz-range-thumb { width: 6px; height: 16px; border: 0; border-radius: 2px; background: var(--st-text); }
.sp-weight { flex: 0 0 84px; background: linear-gradient(90deg, var(--st-grass) var(--f, 50%), var(--st-input) var(--f, 50%)); }
.sp-weight.off { background: linear-gradient(90deg, #555 var(--f, 50%), var(--st-input) var(--f, 50%)); }
.sp-weight::-webkit-slider-thumb { opacity: 0; }
.sp-weight::-moz-range-thumb { opacity: 0; }
.sp-check { margin-left: auto; width: 16px; height: 16px; border-radius: 3px; border: 1px solid var(--st-line); background: var(--st-input); cursor: pointer; padding: 0; position: relative; }
.sp-check.on { background: var(--st-grass); border-color: var(--st-grass); }
.sp-check.on::after { content: "✓"; position: absolute; inset: 0; color: #fff; font: 700 12px/15px var(--sans); text-align: center; }
.sp-num { background: var(--st-input); border: 1px solid var(--st-line); border-radius: 3px; color: var(--st-text); font: 500 12px var(--mono); padding: 3px 5px; text-align: center; }
.sp-centre .sp-label { flex-basis: 40%; }
.sp-dice { margin-left: auto; background: var(--st-panel2); border: 0; border-radius: 3px; cursor: pointer; padding: 2px 6px; }
.sp-presets { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; padding: 6px; }
.sp-preset { position: relative; height: 44px; background: var(--st-panel2); color: var(--st-text); border: 0; border-radius: 3px; cursor: pointer; font: 500 11px/1.15 var(--sans); padding: 0 3px 6px; overflow: hidden; transition: transform 0.3s var(--spring); }
.sp-preset:hover { transform: translateY(-1px); background: #464646; }
.sp-strip { position: absolute; left: 0; right: 0; bottom: 0; height: 5px; display: flex; }
.sp-strip b { flex: 1; }
.sp-biome .sp-label { flex: 1 1 auto; }
.sp-swatch { flex: 0 0 12px; height: 12px; border-radius: 2px; box-shadow: 0 0 0 1px var(--st-line); }
.sp-seg { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; padding: 4px 0; }
.sp-seg button, .sp-filters button { background: var(--st-panel2); color: var(--st-text); border: 0; border-radius: 3px; padding: 4px 0; font: 500 11px var(--sans); cursor: pointer; }
.sp-seg button.on, .sp-filters button.on { background: var(--st-water); color: #fff; }
.sp-filters { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; padding: 6px; }
.sp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; max-height: 300px; overflow-y: auto; padding: 2px; }
.sp-item { height: 58px; background: var(--st-input); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 3px; color: var(--st-text); cursor: pointer; font: 500 11px/1.15 var(--sans); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; padding: 2px 4px; }
.sp-item b { font-size: 13px; }
.sp-item.on { border: 2px solid var(--st-grass); background: var(--st-panel2); }
.sp-sub { padding-top: 6px; }
.sp-note { margin: 2px 0 4px; color: var(--st-sub); font-size: 11px; }
.sp-btn { margin-top: 6px; border: 0; border-radius: 4px; padding: 9px; font: 700 13px var(--sans); cursor: pointer; color: var(--st-text); background: var(--st-panel2); transition: transform 0.3s var(--spring), filter 0.2s; }
.sp-btn:hover { filter: brightness(1.1); }
.sp-btn:active { transform: scale(0.98); }
.sp-btn.go { background: var(--st-grass); color: #fff; }
.sp-btn.big { padding: 12px; font-size: 14px; }
.sp-btn.blue { background: var(--st-water); color: #fff; }
.sp-btn.red { background: var(--st-lava); color: #fff; }
.sp-bar { position: relative; height: 26px; background: var(--st-input); border-radius: 4px; overflow: hidden; margin-top: 6px; }
.sp-bar i { position: absolute; inset: 0 auto 0 0; width: 0; background: var(--st-grass); transition: width 0.15s; }
.sp-bar span { position: relative; display: block; text-align: center; line-height: 26px; font-size: 12px; }
.sp-status { padding: 6px 10px; border-top: 1px solid var(--st-line); background: var(--st-panel); color: var(--st-sub); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sp-status.warn { color: #e2a046; }

/* galleries */
.world-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 34px 26px; }
.world { margin: 0; }
.world .pic, .biome .pic, .struct .pic { position: relative; transition: transform 0.45s var(--spring); }
.world:hover .pic, .biome:hover .pic, .struct:hover .pic { transform: translateY(-6px); }
.world .pic::after, .biome .pic::after { content: ""; position: absolute; left: 16%; right: 16%; bottom: 4%; height: 10%; background: radial-gradient(closest-side, var(--shadow), transparent); z-index: -1; }
.world figcaption { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; margin-top: 6px; }
.world figcaption b { font-size: 19px; font-weight: 800; }
.world .seed { font: 500 13px var(--mono); color: var(--ink-3); }
.world button { margin-left: auto; font: 700 13px var(--sans); color: var(--grass); background: none; border: 0; padding: 0; cursor: pointer; }
.world button:hover { text-decoration: underline; }
.world .mats { display: flex; gap: 3px; width: 100%; }
.world .mats i { height: 4px; flex: 1; border-radius: 2px; }

.biome-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px 28px; }
.biome { margin: 0; }
.biome figcaption b { display: block; font-size: 20px; font-weight: 800; margin-top: 4px; }
.biome figcaption span { color: var(--ink-2); font-size: 15px; }

.water-grid, .erase-grid { display: grid; gap: 28px; }
.water-grid { grid-template-columns: repeat(3, 1fr); }
.erase-grid { grid-template-columns: repeat(2, 1fr); }
.water-grid figure, .erase-grid figure, .struct-video { margin: 0; }
figcaption b { font-weight: 800; }
.water-grid figcaption, .erase-grid figcaption { margin-top: 10px; color: var(--ink-2); }
.water-grid figcaption b, .erase-grid figcaption b { color: var(--ink); display: block; font-size: 20px; }
video { border-radius: 10px; background: linear-gradient(180deg, var(--vp-a), var(--vp-b)); }

.struct-video { max-width: 900px; margin-bottom: 40px; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.filters button { font: 600 14px var(--sans); color: var(--ink-2); background: none; border: 1.5px solid var(--line); border-radius: 6px; padding: 7px 14px; cursor: pointer; transition: transform 0.3s var(--spring); }
.filters button:hover { transform: translateY(-1px); }
.filters button.on { color: var(--on-grass); background: var(--grass); border-color: var(--grass); }
.struct-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px 16px; }
.struct { margin: 0; text-align: center; }
.struct[hidden] { display: none; }
.struct figcaption { font-size: 14px; font-weight: 700; margin-top: 2px; }
.struct figcaption span { display: block; font-weight: 500; color: var(--ink-3); font-size: 12px; }

.how-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 40px; align-items: start; }
.diagram { margin: 0; }
.steps { margin: 0; padding-left: 22px; color: var(--ink-2); }
.steps li { margin-bottom: 14px; }
.steps li::marker { color: var(--grass); font-weight: 800; }

.install-steps { padding-left: 22px; max-width: 820px; }
.install-steps li { margin-bottom: 14px; }
.install-steps li::marker { color: var(--grass); font-weight: 800; }
.paths { display: grid; gap: 8px; margin: 10px 0 6px; }
.paths div { display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.paths b { width: 80px; }

.faq details { border-top: 1px solid var(--line); padding: 14px 0; max-width: 820px; }
.faq summary { font-weight: 700; font-size: 18px; cursor: pointer; }
.faq details p { color: var(--ink-2); margin: 8px 0 0; }

.foot { max-width: 1240px; margin: 110px auto 0; padding: 28px 32px 40px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; color: var(--ink-3); font-size: 14px; }

@media (max-width: 1000px) {
  .hero { grid-template-columns: 1fr; }
  .hero-art { margin: 0; }
  .studio-body { grid-template-columns: 1fr; grid-template-rows: 380px 520px; height: auto; }
  .viewport { grid-row: 1; }
  .sp { grid-row: 2; }
  .world-grid { grid-template-columns: repeat(2, 1fr); }
  .biome-grid, .water-grid { grid-template-columns: repeat(2, 1fr); }
  .struct-grid { grid-template-columns: repeat(4, 1fr); }
  .how-grid { grid-template-columns: 1fr; }
  .top nav { display: none; }
  .lang { margin-left: auto; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  section { padding: 56px 16px 0; }
  .top { padding: 10px 16px; }
  .hero { padding-top: 32px; }
  .lead { font-size: 18px; }
  .facts b { font-size: 30px; }
  .facts li { flex-basis: 45%; }
  .studio { margin: 0 -16px; border-radius: 0; }
  .studio-body { grid-template-rows: 320px 500px; }
  /* long galleries scroll sideways on phones instead of stretching the page */
  .world-grid, .biome-grid, .water-grid, .erase-grid {
    display: grid; grid-auto-flow: column; grid-template-columns: none; grid-auto-columns: 82%;
    overflow-x: auto; scroll-snap-type: x mandatory; margin: 0 -16px; padding: 0 16px 12px; gap: 16px;
  }
  .world-grid > *, .biome-grid > *, .water-grid > *, .erase-grid > * { scroll-snap-align: start; }
  .struct-grid { grid-template-columns: repeat(3, 1fr); gap: 14px 10px; }
  .foot { padding: 24px 16px 32px; }
}
@media (prefers-reduced-motion: reduce) {
  .float img { animation: none; }
  * { transition: none !important; scroll-behavior: auto !important; }
}