/* Fossil or Phoney: styles.
   All colours live here as variables, so the theme can be changed in one place. */

:root {
  --bg: #2b2118;           /* dark earth */
  --panel: #f1e3c6;        /* sandstone */
  --panel-edge: #c9a46b;   /* darker sandstone */
  --panel-deep: #e2cda3;   /* shaded sandstone */
  --ink: #2b2118;
  --ink-soft: #6b5640;
  --accent: #e07a2e;       /* amber orange */
  --accent-dark: #a9541a;
  --alt: #5d7a4a;          /* moss green */
  --alt-dark: #3e5531;
  --light: #f1e3c6;
  --pixel: 4px;            /* thickness of pixel-style borders */

  --font-display: "Jersey 10", system-ui, sans-serif;
  --font-body: "Pixelify Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  justify-items: center;
  align-content: start;
  padding: 24px 16px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.5;
}

.card {
  width: 100%;
  max-width: 560px;
  display: grid;
  gap: 16px;
}

header,
footer {
  text-align: center;
  color: var(--light);
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3rem, 12vw, 4.5rem);
  line-height: 1;
}

h2 {
  margin: 8px 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2rem;
  line-height: 1;
}

.puzzle-number { margin: 8px 0 0; }

/* ---------- Panels ---------- */

.panel {
  background: var(--panel);
  border: var(--pixel) solid var(--panel-edge);
  /* A hard drop shadow with no blur keeps the pixel-art look. */
  box-shadow: var(--pixel) var(--pixel) 0 #000;
  padding: 16px 20px;
}

.panel p { margin: 0 0 8px; }
.panel p:last-child { margin-bottom: 0; }

.how-to summary {
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.6rem;
  line-height: 1;
}
.how-to[open] summary { margin-bottom: 8px; }

.step {
  color: var(--ink-soft);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.question {
  display: block;
  margin: 16px 0 8px;
  font-family: var(--font-display);
  font-size: 1.7rem;
  line-height: 1;
}

/* ---------- Photos ---------- */

.photo {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  margin: 8px 0 12px;
  border: var(--pixel) solid var(--ink);
  background: var(--ink);
  /* Shows the whole photo, letterboxed on the dark background, whatever its shape. */
  object-fit: contain;
  image-rendering: pixelated;
}

.photo.placeholder {
  display: grid;
  place-items: center;
  color: var(--ink-soft);
  /* A chunky checkerboard, like an empty specimen tray. */
  background:
    repeating-conic-gradient(var(--panel-deep) 0 25%, var(--panel) 0 50%) 0 0 / 32px 32px;
}
.photo.placeholder span {
  background: var(--panel);
  padding: 4px 10px;
  border: 2px solid var(--panel-edge);
}

.clue { font-weight: 600; }
.found span { color: var(--ink-soft); }

/* ---------- Buttons ---------- */

.btn {
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 10px 18px;
  color: var(--light);
  background: var(--accent);
  border: var(--pixel) solid var(--accent-dark);
  box-shadow: 0 var(--pixel) 0 var(--accent-dark);
  transition: transform 60ms;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: translateY(var(--pixel)); box-shadow: none; }
.btn:focus-visible { outline: 3px dashed var(--ink); outline-offset: 3px; }

.btn-alt {
  background: var(--alt);
  border-color: var(--alt-dark);
  box-shadow: 0 var(--pixel) 0 var(--alt-dark);
}

.btn[aria-pressed="true"] {
  transform: translateY(var(--pixel));
  box-shadow: none;
  outline: 3px solid var(--ink);
}

.choice {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

#lock-in,
#next,
#share {
  display: block;
  width: 100%;
  margin-top: 16px;
}

/* ---------- Age slider ---------- */

.age-readout { min-height: 3em; }
.age-readout strong { display: block; font-size: 1.2rem; }
.age-readout span { color: var(--ink-soft); font-size: 0.9rem; }

input[type="range"] {
  width: 100%;
  margin: 8px 0 4px;
  accent-color: var(--accent);
  cursor: pointer;
}

.periods {
  display: flex;
  height: 22px;
  border: 2px solid var(--ink);
  overflow: hidden;
  font-size: 0.7rem;
  line-height: 18px;
  text-align: center;
}
.period {
  flex: none;
  overflow: hidden;
  white-space: nowrap;
  color: var(--ink-soft);
}
.period:nth-child(odd) { background: var(--panel-deep); }
.period:nth-child(even) { background: var(--panel); }
.period.active { background: var(--accent); color: var(--light); }

.ends {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 2px;
}

/* ---------- Reveal ---------- */

.verdict {
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1.1;
}
.verdict-emoji { font-size: 1.6rem; }

.tag {
  display: inline-block;
  background: var(--alt);
  color: var(--light);
  padding: 2px 10px;
}

.fact {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 2px dashed var(--panel-edge);
}

.read-more a {
  color: var(--accent-dark);
  font-weight: 600;
}

.credit {
  font-size: 0.75rem;
  color: var(--ink-soft);
}
.credit a { color: inherit; }

.mini-track {
  position: relative;
  height: 18px;
  margin-top: 12px;
  background: var(--panel-deep);
  border: 2px solid var(--ink);
}
.mini-range {
  position: absolute;
  top: 0;
  bottom: 0;
  background: var(--alt);
}
.mini-guess {
  position: absolute;
  top: -6px;
  bottom: -6px;
  width: 6px;
  margin-left: -3px;
  background: var(--accent);
  border: 1px solid var(--ink);
}

.legend { font-size: 0.8rem; color: var(--ink-soft); }
.key {
  display: inline-block;
  width: 12px;
  height: 12px;
  vertical-align: -1px;
  margin-left: 6px;
  border: 1px solid var(--ink);
}
.key-range { background: var(--alt); }
.key-guess { background: var(--accent); }

/* ---------- Results ---------- */

.results { text-align: center; }

.emoji-row {
  font-size: 2.4rem;
  letter-spacing: 0.1em;
}

.summary {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  text-align: left;
  display: grid;
  gap: 8px;
}
.summary li { display: flex; gap: 10px; align-items: start; }
.summary small { display: block; color: var(--ink-soft); }

.share-status textarea {
  width: 100%;
  font: inherit;
  margin-top: 8px;
}

.countdown { margin-top: 12px; color: var(--ink-soft); }

footer p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.8;
}