/* The front door.
 *
 * Palette comes from `island/tokens.css`, which the viewer and the scoreboard
 * already share -- a second palette here would drift, and the first thing a
 * visitor does after this page is open one of those two.
 *
 * **Sized for a phone first.** The brief's own reasoning: most people will
 * arrive from a link on a phone, and the full island does not have to be a
 * good phone game for the phone visit to be worth having. Understanding the
 * premise, reading the score, and getting to the lobby all have to work at
 * 360px, so those are what the breakpoints are set against.
 */

main {
  max-width: 60rem;
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 3rem) clamp(1rem, 4vw, 2rem) 3rem;
}

/* ---- the hero ---------------------------------------------------------- */

.hero { padding: clamp(1rem, 5vw, 3rem) 0 clamp(1.5rem, 4vw, 2.5rem); }

.eyebrow {
  margin: 0 0 .75rem;
  font-size: .8rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 {
  margin: 0;
  font-size: clamp(2.75rem, 12vw, 5.5rem);
  line-height: .95;
  letter-spacing: -.03em;
  font-weight: 700;
}

.lede {
  margin: .6rem 0 0;
  font-size: clamp(1.05rem, 3.5vw, 1.5rem);
  color: var(--ink-2);
}

.byo {
  margin: 1.5rem 0 0;
  font-size: clamp(1rem, 3vw, 1.25rem);
  line-height: 1.5;
}
.byo strong { display: block; color: var(--ink); }
/* The list of harnesses is the sentence that answers "can my agent play?", so
   it is a size a skimming reader still reads rather than a caption. */
.harnesses { color: var(--eff); }

.actions {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  margin: 1.75rem 0 0;
}
.actions a {
  text-decoration: none;
  font-size: clamp(.95rem, 2.5vw, 1.05rem);
  font-weight: 600;
  padding: .85rem 1.5rem;
  border-radius: .7rem;
  border: 1px solid var(--line);
  color: var(--ink);
  /* A thumb target on a phone, not a link that happens to be tappable. */
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
}
.actions a.go { background: var(--eff); border-color: var(--eff); color: #10181c; }
.actions a.alt { background: var(--panel); }
.actions a:hover { border-color: var(--ink-2); }
.actions a.go:hover { filter: brightness(1.08); }

/* ---- the ways to play --------------------------------------------------- */
/* The headline action and the arrow read as one control: square the edge
   between them and round the outside, so it is a split button and not two
   buttons that happen to touch. */
.split { display: inline-flex; }
.split .go { border-radius: .7rem 0 0 .7rem; }
.actions .split .arrow {
  border-radius: 0 .7rem .7rem 0;
  background: var(--eff); border: 1px solid var(--eff); border-left-color: #10181c33;
  color: #10181c; cursor: pointer;
  padding: .85rem 1rem; min-height: 2.75rem;
  display: inline-flex; align-items: center;
}
.actions .split .arrow:hover { filter: brightness(1.08); }
/* Drawn, not typed. `\u25be` is missing from enough faces that it falls back
   to a hollow box, which reads as a broken page rather than as a menu -- seen
   in a screenshot of the hand lobby's version of this button. Borders are in
   every browser, and `currentColor` keeps it on the button's own ink. */
.arrow .caret {
  display: inline-block; width: 0; height: 0;
  border-left: .34em solid transparent; border-right: .34em solid transparent;
  border-top: .4em solid currentColor;
}

.ways {
  list-style: none;
  margin: .75rem 0 0;
  padding: .5rem .75rem;
  max-width: 34rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: .7rem;
}
.ways li { padding: .6rem .25rem; border-bottom: 1px solid var(--line); }
.ways li:last-child { border-bottom: 0; }
.ways a { color: var(--ink); font-weight: 600; text-decoration: none; }
.ways a:hover { color: var(--eff); }
.ways .what { display: block; margin-top: .15rem; color: var(--ink-2);
              font-size: .92rem; line-height: 1.45; }

/* ---- the score to beat -------------------------------------------------- */

.beat {
  display: flex;
  align-items: baseline;
  gap: .75rem;
  flex-wrap: wrap;
  margin: 2rem 0 0;
  padding: 1rem 1.25rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: .9rem;
  text-decoration: none;
  color: inherit;
}
.beat:hover { border-color: var(--eff); }
.beat-label {
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  width: 100%;
}
.beat-score {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(2rem, 8vw, 2.75rem);
  font-weight: 700;
  line-height: 1;
  color: var(--above);
}
/* Unheld is a state, not a missing value, and is not dressed as a score. */
.beat-score.unheld { color: var(--muted); font-size: clamp(1.25rem, 5vw, 1.6rem); }
.beat-score.down { color: var(--below); }
.beat-note { color: var(--ink-2); font-size: .9rem; flex: 1; min-width: 12rem; }

/* ---- the rest ----------------------------------------------------------- */

section { padding: clamp(1.5rem, 4vw, 2.5rem) 0; border-top: 1px solid var(--line); }
h2 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.15rem, 3vw, 1.4rem);
  font-weight: 650;
}
h3 { margin: 0 0 .35rem; font-size: 1rem; font-weight: 600; }
p { margin: 0 0 .75rem; line-height: 1.6; color: var(--ink-2); }

.grid {
  display: grid;
  gap: 1.5rem 2rem;
  /* Two by two rather than three and a stray: there are four of these and a
     3+1 row reads as one of them having been left over. */
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
}
.grid p { margin: 0; font-size: .95rem; }

ol { margin: 0; padding-left: 1.25rem; color: var(--ink-2); line-height: 1.7; }
ol strong { color: var(--ink); }
.foot { margin-top: 1rem; font-size: .9rem; color: var(--muted); }

details { margin-top: 1rem; }
summary { cursor: pointer; color: var(--ink-2); font-size: .95rem; }
details p { font-size: .9rem; color: var(--muted); margin-top: .75rem; }

a { color: var(--eff); }
section a, footer a, .foot a { color: var(--above); }

footer {
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .9rem;
  line-height: 2.2;
}