/* =====================================================================
   Tide Pool: a rock pool at low tide in the morning. Bright shallow water
   over sand, a basin of dark wet rock with barnacles round its rim. The
   cards are bleached driftwood boards; the buttons coral and sea-foam.
   ===================================================================== */

:root {
  --sea: #4cc2c4;
  --sea-deep: #1f8d98;
  --sea-dark: #0f5d6b;
  --sand: #efe2c0;
  --rock: #4a5458;
  --rock-deep: #2f383c;
  --coral: #f07a5a;
  --coral-deep: #c4573a;
  --foam: #f6fbf6;
  --drift: #e6ded0;
  --drift-line: #c9bfae;
  --ink: #183c44;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: "Mulish", system-ui, sans-serif; color: var(--ink);
  background:
    radial-gradient(ellipse at 20% 10%, rgba(255, 255, 255, 0.35), transparent 50%),
    radial-gradient(ellipse at 85% 90%, rgba(239, 226, 192, 0.55), transparent 55%),
    linear-gradient(170deg, #8fdedb, var(--sea) 45%, var(--sea-deep));
  overflow: hidden;
}
/* light rippling on the water (Visual FX on): the same ripples sit still with it off */
body::before {
  content: ""; position: fixed; inset: -20%; pointer-events: none; opacity: 0.35;
  background: repeating-radial-gradient(circle at 40% 30%, rgba(255, 255, 255, 0.5) 0 2px, transparent 3px 26px);
}
html.fx-on body::before { animation: tp-ripple 9s ease-in-out infinite alternate; }
@keyframes tp-ripple { to { transform: translate(3%, 2%) scale(1.04); } }

.nav-back-games {
  position: fixed; top: 16px; left: 18px; z-index: 50;
  font-family: "Sniglet", sans-serif; font-size: 16px; font-weight: 800;
  color: var(--foam); text-decoration: none;
  background: var(--sea-dark); border: 2px solid #0a434d; border-radius: 999px;
  box-shadow: 0 2px 0 #0a434d;
  padding: 5px 14px;
}
.nav-back-games:hover { filter: brightness(1.12); }

.shore { position: fixed; inset: 0; display: flex; flex-direction: column; align-items: center; padding: 60px 14px 12px; gap: 10px; }
.hud { display: flex; gap: 18px; align-items: center; font-weight: 800; color: var(--foam); text-shadow: 0 1px 0 var(--sea-dark);
  background: rgba(15, 93, 107, 0.6); border-radius: 999px; padding: 4px 16px; }
.hud[hidden] { display: none; }
.hud b, .hud .left { font-family: "Sniglet", sans-serif; font-size: 22px; font-weight: 800; }
.hud .left.low { color: #ffd0c2; }
.basin {
  flex: 1; width: 100%; max-width: 560px; min-height: 200px; display: flex; align-items: center; justify-content: center;
}
.basin canvas {
  display: block; touch-action: none; border-radius: 22px;
  border: 12px solid var(--rock);
  box-shadow: inset 0 0 0 2px var(--rock-deep), 0 0 0 3px var(--rock-deep), 0 10px 0 rgba(15, 60, 70, 0.35);
  background: var(--sand);
  box-sizing: content-box;
}
.tools { display: flex; gap: 8px; }
.tools button, .card .row button {
  font-family: "Sniglet", sans-serif; font-size: 16px; font-weight: 800; cursor: pointer; color: var(--foam);
  background: var(--sea-dark); border: 2px solid #0a434d; border-radius: 999px; padding: 5px 14px; box-shadow: 0 2px 0 #0a434d;
}
.keys { font-size: 13px; color: var(--foam); text-shadow: 0 1px 0 var(--sea-dark); text-align: center; font-weight: 600; }
kbd { font-family: inherit; font-size: 12px; font-weight: 800; color: var(--sea-dark); background: var(--foam); border-radius: 4px; padding: 0 5px; margin: 0 1px; text-shadow: none; }

/* ---- the cards: bleached driftwood ---------------------------------------------- */
.panel { position: fixed; inset: 0; z-index: 30; display: flex; align-items: center; justify-content: center; padding: 26px 16px; overflow-y: auto; background: rgba(15, 93, 107, 0.35); }
.panel[hidden] { display: none; }
.panel > .card { margin: auto; }
.card {
  width: min(450px, 100%); color: var(--ink);
  background: repeating-linear-gradient(0deg, transparent 0 22px, rgba(140, 125, 100, 0.12) 22px 24px), repeating-linear-gradient(90deg, rgba(0, 0, 0, 0.02) 0 1px, transparent 1px 11px), var(--drift);
  border: 3px solid var(--drift-line); border-radius: 18px 26px 20px 24px;
  box-shadow: 0 14px 34px rgba(10, 60, 70, 0.45);
  padding: 22px 22px 18px;
}
.card h1, .card h2 { font-family: "Sniglet", sans-serif; font-weight: 800; color: var(--sea-dark); }
.card h1 { font-size: 40px; line-height: 1; }
.card h2 { font-size: 30px; }
.card .tag { font-weight: 800; color: var(--coral-deep); margin: 6px 0 10px; }
.card .how { font-size: 15px; line-height: 1.5; margin-bottom: 12px; }
.seg { display: flex; flex-direction: column; gap: 7px; margin-bottom: 12px; }
.seg button {
  font-family: inherit; font-size: 16px; text-align: left; cursor: pointer; color: var(--ink);
  background: rgba(255, 255, 255, 0.5); border: 2px solid var(--drift-line); border-radius: 14px; padding: 7px 12px;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
.seg button b { font-family: "Sniglet", sans-serif; font-weight: 800; }
.seg button small { font-size: 13px; color: #4b6a70; }
.seg button.on { background: var(--sea); border-color: var(--sea-deep); color: var(--foam); }
.seg button.on small { color: #e6fbf9; }
.playbtn, .card .row button:first-child {
  font-family: "Sniglet", sans-serif; font-weight: 800; cursor: pointer; color: var(--foam);
  background: var(--coral); border: 2px solid var(--coral-deep); border-radius: 999px; box-shadow: 0 3px 0 var(--coral-deep);
}
.playbtn { width: 100%; font-size: 22px; padding: 8px 12px; }
.playbtn:active, .card .row button:active, .tools button:active { transform: translateY(2px); box-shadow: none; }
.bests { margin-top: 10px; text-align: center; font-size: 14px; color: #4b6a70; min-height: 18px; }
.card.end { text-align: center; }
.card .big { font-family: "Sniglet", sans-serif; font-weight: 800; font-size: 50px; line-height: 1.1; margin: 4px 0; color: var(--sea-dark); }
.card .stats { display: flex; flex-direction: column; align-items: center; gap: 8px; margin: 2px 0 16px; color: #4b6a70; }
.stats .best { font-weight: 800; border: 2px solid var(--drift-line); border-radius: 999px; padding: 2px 14px; background: rgba(255, 255, 255, 0.6); color: var(--ink); }
.stats .best.record { background: var(--coral); border-color: var(--coral-deep); color: var(--foam); }
.card .row { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

@media (max-width: 520px) {
  .shore { padding-top: 58px; gap: 8px; }
  .basin canvas { border-width: 8px; border-radius: 16px; }
  .panel { padding-top: 62px; }
  .card h1 { font-size: 32px; }
}

.gs-pause { background: rgba(15, 93, 107, 0.4); }