*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
html, body { margin: 0; overflow-x: hidden; }

body {
  min-height: 100vh;
  background: var(--page-bg);
  color: var(--text);
  font-family: var(--font-mono);
}

/* ===== header (mirrors apps/main) ===== */

header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 34px;
  height: 62px;
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
}
.pt-brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.pt-brand .pt-logo-icon { filter: drop-shadow(0 0 4px var(--accent)); }
.pt-logo-icon rect { fill: var(--accent); }
.pt-brand span { font-weight: 700; font-size: 20px; letter-spacing: .08em; color: var(--text); }
.pk-title { font-size: 14px; letter-spacing: .1em; color: var(--muted); }

#app { max-width: 620px; margin: 0 auto; padding: 40px 20px 72px; }

.pk-label { font-size: 13px; letter-spacing: .22em; color: var(--accent); margin-bottom: 10px; }
.pk-hint { color: var(--muted); font-size: 14px; margin-bottom: 22px; }

/* ===== deck picker ===== */

.deck-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 28px;
}

@media (min-width: 640px) {
  .deck-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .deck-grid { grid-template-columns: repeat(3, 1fr); }
}

.deck-tile {
  --deck-color: #7dd3fc;
  min-width: 0;
  width: 100%;
  text-align: left;
  border: 2px solid var(--section-border);
  border-radius: 0;
  background: var(--header-bg);
  color: var(--text);
  padding: 0 0 12px;
  cursor: pointer;
  font-family: inherit;
  box-shadow: 4px 4px 0 var(--dash-border);
  transition: transform .1s, box-shadow .1s;
  overflow-wrap: break-word;
}

.deck-tile:hover { transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--dash-border); }

.deck-tile.is-selected {
  border-color: var(--deck-color);
  box-shadow: 4px 4px 0 var(--deck-color);
}

.deck-tile__bar {
  display: block;
  height: 8px;
  background: var(--deck-color);
  margin-bottom: 10px;
}

.deck-tile__name { display: block; font-weight: 600; padding: 0 12px; margin-bottom: 4px; }
.deck-tile__description { display: block; font-size: 12px; color: var(--muted); padding: 0 12px; margin-bottom: 8px; }
.deck-tile__meta { display: block; font-size: 11px; letter-spacing: .06em; color: var(--muted); padding: 0 12px; }

/* ===== buttons ===== */

.button {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 20px;
  border-radius: 2px;
  border: 2px solid var(--section-border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.button--primary { background: var(--accent); color: var(--page-bg); border-color: var(--accent); }
.button--primary:disabled { opacity: .4; cursor: not-allowed; }
.button--secondary:hover, .button--ghost:hover { border-color: var(--accent); color: var(--accent); }
.button--ghost { display: block; margin: 20px auto 0; border: none; color: var(--muted); }

/* ===== progress ===== */

.progress-row { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--muted); margin-bottom: 10px; letter-spacing: .04em; }
.progress-track { flex: 1; margin-left: 12px; height: 4px; background: var(--section-border); }
.progress-bar { display: block; height: 100%; background: var(--accent); }

/* ===== the card ===== */

.pk-card {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 320px;
  aspect-ratio: 5 / 7;
  margin: 28px auto;
  padding: 0;
  border: 3px solid var(--deck-color, var(--accent));
  border-radius: 10px;
  background: var(--header-bg);
  box-shadow: 7px 7px 0 var(--dash-border);
  cursor: pointer;
  overflow: hidden;
  font-family: inherit;
  color: var(--text);
}

.pk-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, .035) 0px,
    rgba(255, 255, 255, .035) 1px,
    transparent 1px,
    transparent 3px
  );
}

.pk-card__index {
  position: absolute;
  width: 30px;
  text-align: center;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--deck-color, var(--accent));
  z-index: 1;
}
.pk-card__index--tl { top: 8px; left: 8px; }
.pk-card__index--br { bottom: 8px; right: 8px; transform: rotate(180deg); }

.pk-card__bar {
  background: var(--deck-color, var(--accent));
  color: #14181d;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  text-align: center;
  padding: 8px 34px;
}

.pk-card__body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 26px;
  text-align: center;
}

.pk-card__text {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 500;
  line-height: 1.45;
}

.pk-card__footer {
  border-top: 1px solid var(--section-border);
  padding: 8px;
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: .08em;
}

.game-controls { display: flex; gap: 12px; justify-content: center; }
.game-controls .button { flex: 1; max-width: 200px; }

#end { text-align: center; }
#end .button { margin: 6px; }

@media (max-width: 480px) {
  header { padding: 12px 18px; height: auto; }
  .pk-title { display: none; }
  #app { padding: 24px 16px 56px; }
  .pk-card { max-width: 260px; }
  .game-controls { flex-wrap: wrap; }
  .game-controls .button { flex: 1 1 100%; max-width: none; }
}