:root {
  --bg: #1a1a2e;
  --bg2: #14142a;
  --panel: #21213a;
  --panel2: #1e1e30;
  --border: #36364e;
  --certo: #3aa394;
  --lugar: #d3ad69;
  --errado: #312a45;
  --key: #4c4470;
  --aviso: #c8616c;
  --text: #fafafa;
  --dim: #9a9ab0;
  --radius: 16px;
  --font: "Segoe UI", Roboto, Arial, system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* ---- logo (grelha 2x2) ---- */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3px;
  width: 44px; height: 44px;
  flex: none;
}
.logo-grid span { border-radius: 5px; }
.logo-grid .a { background: var(--certo); }
.logo-grid .b { background: var(--lugar); }
.logo-grid .c { background: var(--key); }
.logo-grid .d { background: var(--certo); }
.logo-grid.big { width: 96px; height: 96px; gap: 6px; }
.logo-grid.big span { border-radius: 12px; }

/* ---- header ---- */
header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(20,20,42,.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
header .wrap { display: flex; align-items: center; gap: 16px; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 22px; letter-spacing: 2px; }
header nav { margin-left: auto; display: flex; gap: 22px; }
header nav a { color: var(--dim); font-weight: 600; font-size: 15px; }
header nav a:hover { color: var(--text); text-decoration: none; }
@media (max-width: 640px) { header nav { display: none; } }

/* ---- botões ---- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 26px; border-radius: 999px;
  font-weight: 700; font-size: 16px; cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary { background: var(--certo); color: #06231f; }
.btn-primary:hover { background: #45b8a7; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--dim); text-decoration: none; }

/* ---- hero ---- */
.hero {
  background: radial-gradient(1200px 600px at 50% -10%, #25254a 0%, var(--bg) 60%);
  padding: 64px 0 40px;
}
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.hero h1 { font-size: 64px; letter-spacing: 6px; margin: 18px 0 4px; }
.hero .tagline { font-size: 22px; color: var(--dim); margin: 0 0 12px; }
.hero p.lead { font-size: 17px; color: var(--text); max-width: 48ch; }
.hero .cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 22px; }
.hero-shot { justify-self: center; }
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; text-align: center; }
  .hero h1 { font-size: 48px; }
  .hero .cta { justify-content: center; }
  .hero-shot { display: none; }
}

/* moldura de telemóvel em CSS */
.phone {
  width: 270px; padding: 12px; border-radius: 38px;
  background: #0b0b12; box-shadow: 0 24px 60px rgba(0,0,0,.5);
}
.phone img { width: 100%; display: block; border-radius: 26px; }

/* ---- secções ---- */
section { padding: 56px 0; }
section h2 { font-size: 34px; text-align: center; margin: 0 0 8px; }
section .sub { text-align: center; color: var(--dim); margin: 0 auto 36px; max-width: 60ch; }

/* tiles de exemplo */
.tiles { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.tile {
  width: 54px; height: 54px; border-radius: 8px;
  display: grid; place-items: center;
  font-weight: 800; font-size: 26px; color: #fff;
  border: 2px solid var(--border); background: var(--panel2);
}
.tile.certo { background: var(--certo); border-color: var(--certo); }
.tile.lugar { background: var(--lugar); border-color: var(--lugar); }
.tile.errado { background: var(--errado); border-color: var(--errado); color: var(--dim); }
.tile.warn { background: #a04652; border-color: var(--aviso); }

.rules { display: grid; gap: 22px; max-width: 720px; margin: 0 auto; }
.rule { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; justify-content: center; }
.rule p { margin: 0; flex: 1; min-width: 220px; }
.rule .tile { width: 46px; height: 46px; font-size: 22px; }

/* modos */
.modes { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.mode {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; text-align: center;
}
.mode .dots { display: flex; gap: 4px; justify-content: center; margin-bottom: 12px; }
.mode .dots i { width: 12px; height: 12px; border-radius: 3px; background: var(--key); display: block; }
.mode .dots i.on { background: var(--certo); }
.mode h3 { margin: 0 0 4px; font-size: 20px; }
.mode .meta { color: var(--dim); font-size: 14px; }

/* galeria */
.gallery { display: flex; gap: 20px; overflow-x: auto; padding: 8px 4px 20px; scroll-snap-type: x mandatory; }
.gallery .phone { flex: none; scroll-snap-align: center; width: 230px; }

/* features */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 18px; }
.feature { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.feature h3 { margin: 0 0 6px; font-size: 18px; }
.feature p { margin: 0; color: var(--dim); font-size: 15px; }

.alt { background: var(--bg2); }

/* footer */
footer { border-top: 1px solid var(--border); padding: 40px 0; color: var(--dim); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: center; }
footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
footer .credits { width: 100%; font-size: 13px; opacity: .8; line-height: 1.7; }

/* páginas de texto simples (privacidade, termos, etc.) */
.doc { max-width: 760px; margin: 0 auto; padding: 48px 20px; }
.doc h1 { font-size: 36px; }
.doc h2 { font-size: 22px; margin-top: 28px; }
.doc .back { display: inline-block; margin-bottom: 24px; }