/* Cosmic Fleets web site. Colours come from the cover art (Mars rust, engine-flare amber)
   and the viewer's map (deep space, territory teal). */

@font-face { font-family: "Chakra Petch"; font-weight: 600; font-display: swap; src: url(/fonts/chakra-petch-latin-600-normal.woff2) format("woff2"); }
@font-face { font-family: "Chakra Petch"; font-weight: 700; font-display: swap; src: url(/fonts/chakra-petch-latin-700-normal.woff2) format("woff2"); }
@font-face { font-family: "Atkinson Hyperlegible"; font-weight: 400; font-display: swap; src: url(/fonts/atkinson-hyperlegible-latin-400-normal.woff2) format("woff2"); }
@font-face { font-family: "Atkinson Hyperlegible"; font-weight: 400; font-style: italic; font-display: swap; src: url(/fonts/atkinson-hyperlegible-latin-400-italic.woff2) format("woff2"); }
@font-face { font-family: "Atkinson Hyperlegible"; font-weight: 700; font-display: swap; src: url(/fonts/atkinson-hyperlegible-latin-700-normal.woff2) format("woff2"); }

:root {
  --space: #0d1a36;      /* page */
  --hull: #16284d;       /* panels */
  --hull-edge: #2a4170;
  --territory: #1d4a4c;  /* the viewer's empire teal */
  --rust: #c9572a;       /* Mars */
  --flare: #ffb238;      /* engine flare: actions, lit stars */
  --starlight: #ece6d9;  /* text */
  --dim: #a7b2c7;        /* secondary text */
  --bad: #ff8f73;
  --display: "Chakra Petch", "Segoe UI", sans-serif;
  --body: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --notch: 14px;         /* the cut corner on buttons and the cover frame */
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--space);
  color: var(--starlight);
  font: 400 1.0625rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--flare); }
a:hover { color: #ffd08a; }
:focus-visible { outline: 3px solid var(--flare); outline-offset: 3px; }

h1, h2, h3 { text-wrap: balance; font-family: var(--display); font-weight: 700; line-height: 1.1; margin: 0 0 .5em; letter-spacing: .005em; }
h1 { font-size: clamp(2.4rem, 5.4vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.3rem; font-weight: 600; }
p { margin: 0 0 1em; max-width: 64ch; }
.quiet { color: var(--dim); }
.hint { color: var(--dim); font-family: var(--body); font-weight: 400; }

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
[hidden] { display: none !important; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--flare); color: var(--space); padding: .5em 1em; z-index: 10; }
.skip:focus { left: 1rem; top: 1rem; }

/* ---------- header ---------- */
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  max-width: 1160px; margin: 0 auto; padding: 1.1rem 1.25rem;
}
.brand {
  font-family: var(--display); font-weight: 700; font-style: italic; font-size: 1.45rem;
  color: var(--flare); text-decoration: none; letter-spacing: .02em;
}
.top nav { display: flex; gap: 1.4rem; }
.top nav a { color: var(--starlight); text-decoration: none; font-family: var(--display); font-weight: 600; }
.top nav a:hover { color: var(--flare); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; cursor: pointer; border: 2px solid var(--flare);
  font: 600 1.05rem/1 var(--display); letter-spacing: .02em; text-decoration: none;
  padding: .85em 1.4em; color: var(--flare); background: transparent;
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, 0 100%);
}
.btn:hover { background: rgba(255, 178, 56, .12); color: var(--flare); }
.btn-main { background: var(--flare); color: var(--space); }
.btn-main:hover { background: #ffc566; color: var(--space); }
.btn[disabled] { opacity: .55; cursor: wait; }
button.link {
  background: none; border: 0; padding: 0; color: var(--flare); font: inherit; text-decoration: underline; cursor: pointer;
}
.links { display: flex; gap: 1.25rem; flex-wrap: wrap; margin-top: 1rem; }

/* ---------- hero ---------- */
.hero {
  max-width: 1160px; margin: 0 auto; padding: 2.5rem 1.25rem 4.5rem;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 3.5rem; align-items: center;
}
.lede { font-size: 1.22rem; }
.actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 1.8rem; }
.cover { margin: 0; position: relative; }
.cover img {
  clip-path: polygon(0 0, calc(100% - 34px) 0, 100% 34px, 100% 100%, 34px 100%, 0 calc(100% - 34px));
  position: relative; z-index: 1;
}
.cover::after {
  content: ""; position: absolute; inset: 18px -18px -18px 18px; background: var(--rust);
  clip-path: polygon(0 0, calc(100% - 34px) 0, 100% 34px, 100% 100%, 34px 100%, 0 calc(100% - 34px));
}

/* ---------- steps (a real sequence, so numbered) ---------- */
.steps { max-width: 1160px; margin: 0 auto; padding: 1rem 1.25rem 4.5rem; }
.steps ol {
  list-style: none; padding: 0; margin: 1.5rem 0 0; counter-reset: step;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2rem;
}
.steps li { counter-increment: step; border-top: 2px solid var(--hull-edge); padding-top: 1rem; }
.steps li::before {
  content: counter(step); display: block; font: 700 2.6rem/1 var(--display); color: var(--rust); margin-bottom: .6rem;
}
.steps p { color: var(--dim); }

/* ---------- games board ---------- */
.games { position: relative; overflow: hidden; border-block: 1px solid var(--hull-edge); }
.games::before {   /* the viewer's map, blurred and faint, behind the board */
  content: ""; position: absolute; inset: -20px; z-index: 0;
  background: url(/img/map.jpg) center / cover; filter: blur(6px); opacity: .22;
}
.games-inner { position: relative; z-index: 1; max-width: 1160px; margin: 0 auto; padding: 4rem 1.25rem; }
.games-key { color: var(--dim); display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.games-key .star { margin-left: .4rem; }
.games-key .star:first-child { margin-left: 0; }
.game {
  display: grid; grid-template-columns: minmax(0, 15rem) minmax(0, 1fr); gap: 1.5rem 2.5rem;
  padding: 1.6rem 0; border-top: 1px solid var(--hull-edge);
}
.game:first-child { border-top: 0; }
.game h3 { margin-bottom: .3rem; }
.game .when { color: var(--dim); margin: 0; }
.game .state { margin: .5rem 0 0; font-weight: 700; }
.game .state.closed { color: var(--rust); }
.positions { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; align-content: start; }
.positions li { display: flex; align-items: center; gap: .55rem; min-width: 11rem; }
.positions .pos { color: var(--dim); font-variant-numeric: tabular-nums; }
.count { color: var(--dim); margin: .9rem 0 0; }

.star {
  display: inline-block; width: 14px; height: 14px; flex: none; border-radius: 50%;
  background: #3b4f78; box-shadow: inset 0 0 0 2px #5a6f99;
}
.star.lit {
  background: radial-gradient(circle, #fff6dc 0 22%, var(--flare) 45%, rgba(255, 178, 56, 0) 72%);
  box-shadow: 0 0 10px 2px rgba(255, 178, 56, .55);
  width: 18px; height: 18px; margin: -2px;
}
@media (prefers-reduced-motion: no-preference) {
  .star.lit.just { animation: ignite 1.2s ease-out both; }
  @keyframes ignite { from { transform: scale(.2); opacity: 0; } 60% { transform: scale(1.35); opacity: 1; } to { transform: none; } }
}

/* ---------- join ---------- */
.join {
  max-width: 1160px; margin: 0 auto; padding: 4.5rem 1.25rem;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 3.5rem; align-items: start;
}
.panel {
  background: var(--hull); border: 1px solid var(--hull-edge); padding: 2rem;
  border-left: 4px solid var(--rust);
}
label { display: block; font-weight: 700; margin: 0 0 .35rem; }
input {
  display: block; width: 100%; margin: 0 0 1.2rem; padding: .7em .8em;
  font: inherit; color: var(--starlight); background: var(--space); border: 1px solid #47619a;
}
input:focus { border-color: var(--flare); outline: none; box-shadow: 0 0 0 2px rgba(255, 178, 56, .45); }
#code { font: 700 1.6rem/1 var(--display); letter-spacing: .35em; max-width: 12rem; }
.ts { margin: 0 0 1.2rem; min-height: 0; }
.note { border-left: 3px solid var(--flare); padding: .1rem 0 .1rem .9rem; color: var(--starlight); }
.msg { margin: .8rem 0 0; }
.msg:empty { display: none; }
.msg.bad { color: var(--bad); }
#me h3 { margin-top: 1.4rem; }
.mygame { padding: .7rem 0; border-top: 1px solid var(--hull-edge); }
.mygame:first-child { border-top: 0; }
.mygame b { font-family: var(--display); font-weight: 600; font-size: 1.1rem; }
.mygame p { margin: .15rem 0 0; color: var(--dim); }

/* ---------- downloads ---------- */
.downloads { max-width: 1160px; margin: 0 auto; padding: 1rem 1.25rem 5rem; }
.dl-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 2rem; margin-top: 1.5rem; }
.dl { background: var(--hull); border: 1px solid var(--hull-edge); }
.dl > div { padding: 1.6rem 1.8rem 1.9rem; }
.dl img { border-bottom: 4px solid var(--territory); aspect-ratio: 16 / 7; object-fit: cover; object-position: 30% 30%; width: 100%; }
.dl-rules { border-top: 4px solid var(--rust); align-self: start; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--hull-edge); }
.foot p { max-width: 1160px; margin: 0 auto; padding: 1.6rem 1.25rem; color: var(--dim); }

/* ---------- narrow screens ---------- */
@media (max-width: 900px) {
  .hero, .join { grid-template-columns: minmax(0, 1fr); gap: 2.5rem; }
  .cover { order: -1; margin-right: 18px; }
  .steps ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dl-grid { grid-template-columns: minmax(0, 1fr); }
  .game { grid-template-columns: minmax(0, 1fr); gap: 1rem; }
}
@media (max-width: 560px) {
  body { font-size: 1rem; }
  .top nav { gap: 1rem; }
  .steps ol { grid-template-columns: minmax(0, 1fr); }
  .panel { padding: 1.4rem 1.1rem; }
  .dl > div { padding: 1.3rem 1.1rem 1.5rem; }
  .positions li { min-width: 0; width: 100%; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
.panel .links:last-child, #me .links { margin-bottom: 0; }