/* Mahjong Trainer — visual language borrowed from Pauline OS (Platinum). */

:root {
  --desk: #46648c;
  --desk-dot: rgba(255, 255, 255, .08);
  --win-bg: #dcdcdc;
  --win-fg: #181818;
  --bevel-light: #f8f8f8;
  --bevel-dark: #787878;
  --accent: #5c5cc4;
  --muted: rgba(0, 0, 0, .5);
  --felt: #2e6b4f;
  --felt-dark: #24543e;
  --tile-face: #fdfaf1;
  --tile-edge: #cfc7ae;
  --suit-m: #b03434;
  --suit-p: #2a4fb0;
  --suit-s: #2e7d3c;
  --good: #1d7a3d;
  --warn: #a04a1e;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; height: 100%; }

body {
  font-family: Verdana, Geneva, sans-serif;
  font-size: 13px;
  color: var(--win-fg);
  background-color: var(--desk);
  background-image: conic-gradient(var(--desk-dot) 25%, transparent 0 50%, var(--desk-dot) 0 75%, transparent 0);
  background-size: 4px 4px;
  -webkit-font-smoothing: none;
}

.pixel { font-family: 'Silkscreen', monospace; }

a { color: var(--accent); }

button { font-family: inherit; font-size: inherit; }

.pixel-btn {
  display: inline-flex;
  align-items: center;
  font-family: 'Silkscreen', monospace;
  font-size: 10px;
  text-decoration: none;
  color: var(--win-fg);
  padding: 4px 12px;
  background: var(--win-bg);
  border: 1px solid var(--win-fg);
  box-shadow: inset 1px 1px 0 var(--bevel-light), inset -1px -1px 0 var(--bevel-dark);
  cursor: pointer;
}
.pixel-btn:active { box-shadow: inset 1px 1px 0 var(--bevel-dark); }
.pixel-btn:disabled { color: var(--muted); cursor: default; }

/* ═══ App frame ═══ */

#mj-app {
  max-width: 860px;
  margin: 0 auto;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--win-bg);
  border-left: 2px solid var(--bevel-light);
  border-right: 2px solid var(--bevel-dark);
}

#mj-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--win-bg);
  border-bottom: 2px solid var(--bevel-dark);
  box-shadow: inset 0 1px 0 var(--bevel-light);
  flex-wrap: wrap;
}

.crumb { font-size: 9px; text-decoration: none; color: var(--muted); }
.crumb:hover { color: var(--accent); }
body.embed .crumb { display: none; }

/* Embedded in a Pauline OS window: the window already provides the desktop
   and chrome, so drop the fake desk background and let the app fill the frame. */
body.embed {
  background-color: var(--win-bg);
  background-image: none;
}
body.embed #mj-app {
  max-width: none;
  border-left: none;
  border-right: none;
}

.mj-title { font-size: 14px; font-weight: 700; }

.mj-tabs { margin-left: auto; display: flex; gap: 4px; }
.mj-tab {
  font-size: 10px;
  padding: 4px 14px;
  background: var(--win-bg);
  color: var(--win-fg);
  border: 1px solid var(--win-fg);
  box-shadow: inset 1px 1px 0 var(--bevel-light), inset -1px -1px 0 var(--bevel-dark);
  cursor: pointer;
}
.mj-tab.active { background: var(--accent); color: #fff; box-shadow: inset 1px 1px 0 rgba(0,0,0,.4); }

.mj-view { flex: 1; display: flex; flex-direction: column; padding: 12px; gap: 10px; }
.mj-view[hidden] { display: none; }

/* ═══ Tiles ═══ */

.tile {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 52px;
  background: var(--tile-face);
  border: 2px solid #181818;
  border-radius: 4px;
  box-shadow: inset -2px -2px 0 var(--tile-edge), 2px 2px 0 rgba(0, 0, 0, .35);
  user-select: none;
  padding: 0;
  line-height: 1;
  gap: 2px;
  position: relative;
  vertical-align: middle;
}

.tile .t-num { font-weight: 700; font-size: 17px; }
.tile .t-glyph { font-size: 13px; }
.tile .t-big { font-size: 19px; font-weight: 700; }
.tile .t-sub { font-size: 7px; font-family: 'Silkscreen', monospace; color: var(--muted); letter-spacing: 0; }

.tile.s-m .t-num, .tile.s-m .t-glyph { color: var(--suit-m); }
.tile.s-p .t-num, .tile.s-p .t-glyph { color: var(--suit-p); }
.tile.s-s .t-num, .tile.s-s .t-glyph { color: var(--suit-s); }
.tile.h-White .t-big { color: #8a8a8a; }
.tile.h-Green .t-big { color: var(--suit-s); }
.tile.h-Red .t-big, .tile.h-East .t-big, .tile.h-South .t-big,
.tile.h-West .t-big, .tile.h-North .t-big { color: #23232a; }
.tile.h-Red .t-big { color: var(--suit-m); }

.tile.small { width: 26px; height: 36px; border-width: 1px; box-shadow: inset -1px -1px 0 var(--tile-edge), 1px 1px 0 rgba(0,0,0,.3); }
.tile.small .t-num { font-size: 12px; }
.tile.small .t-glyph { font-size: 9px; }
.tile.small .t-big { font-size: 14px; }
.tile.small .t-sub { display: none; }

.tile.back {
  background: #b0512f;
  background-image: repeating-linear-gradient(45deg, rgba(255,255,255,.12) 0 2px, transparent 2px 4px);
  width: 20px; height: 28px;
  border-width: 1px;
}

button.tile { cursor: pointer; }
button.tile:hover { transform: translateY(-4px); }
button.tile:disabled { cursor: default; transform: none; }

.tile.reco { outline: 3px solid var(--accent); outline-offset: 1px; }
.tile.reco::after {
  content: '★';
  position: absolute;
  top: -16px;
  font-size: 11px;
  color: var(--accent);
}
.tile.just-discarded { outline: 2px solid #e8c56a; outline-offset: 1px; }

/* ═══ Learn mode ═══ */

#lesson-card {
  flex: 1;
  background: #ffffff;
  border: 2px solid;
  border-color: var(--bevel-dark) var(--bevel-light) var(--bevel-light) var(--bevel-dark);
  padding: 18px 22px 22px;
  overflow-y: auto;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  margin: 0 auto;
}

#lesson-kicker { font-size: 9px; color: var(--accent); margin-bottom: 4px; }
#lesson-title { margin: 0 0 12px; font-family: 'Silkscreen', monospace; font-size: 17px; }
#lesson-body { line-height: 1.55; }
#lesson-body p { margin: 0 0 12px; }
#lesson-body .tile-row { display: flex; flex-wrap: wrap; gap: 5px; align-items: center; margin: 10px 0 14px; }
#lesson-body .tile-row .sep { width: 14px; }
#lesson-body .callout {
  background: #f2f0fa;
  border-left: 4px solid var(--accent);
  padding: 8px 12px;
  margin: 12px 0;
}
#lesson-body .caption { font-size: 11px; color: var(--muted); margin-top: -8px; margin-bottom: 14px; }
#lesson-body h4 { font-family: 'Silkscreen', monospace; font-size: 11px; margin: 18px 0 6px; }
#lesson-body table { border-collapse: collapse; margin: 8px 0 14px; }
#lesson-body td, #lesson-body th { border: 1px solid var(--bevel-dark); padding: 5px 10px; font-size: 12px; text-align: left; }

.quiz { border: 2px dashed var(--accent); padding: 12px; margin: 14px 0; }
.quiz .q { font-weight: 700; margin-bottom: 10px; }
.quiz .q-opts { display: flex; flex-wrap: wrap; gap: 10px; }
.quiz .q-opt {
  display: flex; gap: 4px; align-items: center;
  padding: 7px;
  background: var(--win-bg);
  border: 1px solid var(--win-fg);
  cursor: pointer;
}
.quiz .q-opt.right { background: #d9f2df; border-color: var(--good); }
.quiz .q-opt.wrong { background: #f6ddd1; border-color: var(--warn); }
.quiz .q-fb { margin-top: 10px; font-size: 12px; min-height: 1em; }
.quiz .q-fb.good { color: var(--good); }
.quiz .q-fb.bad { color: var(--warn); }

#lesson-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
}
#lesson-dots { display: flex; gap: 6px; }
#lesson-dots .dot {
  width: 8px; height: 8px;
  background: var(--win-bg);
  border: 1px solid var(--win-fg);
  cursor: pointer;
  padding: 0;
}
#lesson-dots .dot.on { background: var(--accent); }

/* ═══ Play mode ═══ */

#play-bar { display: flex; align-items: center; gap: 12px; }
#play-bar .spacer { flex: 1; }
#coach-wrap { display: flex; align-items: center; gap: 5px; font-size: 10px; cursor: pointer; }
#coach-wrap .pixel { font-size: 10px; }
#wall-count { font-size: 10px; color: var(--muted); }

#table {
  background: var(--felt);
  border: 2px solid;
  border-color: var(--bevel-dark) var(--bevel-light) var(--bevel-light) var(--bevel-dark);
  box-shadow: inset 0 0 0 4px var(--felt-dark);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.opp {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 6px 8px;
  border-radius: 4px;
  border: 1px solid transparent;
}
.opp.active, #your-river-row.active { border-color: #e8c56a; background: rgba(255, 255, 255, .06); }

.opp-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.opp-name { font-family: 'Silkscreen', monospace; font-size: 10px; color: #fff; }
.opp-backs { display: flex; gap: 2px; }
.opp-melds { display: flex; gap: 6px; }
.opp-melds .meld { display: flex; gap: 1px; }

.river { display: flex; flex-wrap: wrap; gap: 3px; min-height: 38px; align-items: center; flex: 1; }

#your-river-row { display: flex; align-items: flex-start; gap: 8px; padding: 6px 8px; border-radius: 4px; border: 1px solid transparent; }
.river-label { font-size: 9px; color: #cfe3d8; padding-top: 10px; white-space: nowrap; }

/* ═══ Coach panel ═══ */

#coach {
  background: #f6f4ff;
  border: 2px solid var(--accent);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, .25);
  padding: 8px 12px 10px;
}
#coach.coach-off { background: #eee; border-color: var(--bevel-dark); }
.coach-head { font-size: 9px; color: var(--accent); margin-bottom: 4px; }
#coach.coach-off .coach-head { color: var(--muted); }
#coach-body { font-size: 12px; line-height: 1.5; }
#coach-body .co-phase { color: var(--muted); font-size: 11px; margin-bottom: 4px; }
#coach-body .co-reco { margin: 4px 0; }
#coach-body .co-reco strong { color: var(--accent); }
#coach-body .co-why { margin: 4px 0; }
#coach-body .co-tiles { display: flex; flex-wrap: wrap; gap: 3px; align-items: center; margin-top: 6px; }
#coach-body .co-tiles .lead { font-size: 11px; color: var(--muted); margin-right: 4px; }
#coach-body .co-win { color: var(--good); font-weight: 700; }

/* ═══ Calls ═══ */

#call-bar {
  background: #fff8e6;
  border: 2px solid #a07a1e;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, .25);
  padding: 10px 12px;
}
#call-text { font-size: 12px; margin-bottom: 8px; line-height: 1.5; }
#call-buttons { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
#call-buttons .call-opt { display: inline-flex; align-items: center; gap: 4px; }
#call-buttons .pixel-btn.shout { background: #e8c56a; }
#call-buttons .pixel-btn.win-call { background: #7ee2a8; }

/* ═══ Player area ═══ */

#player-area { display: flex; flex-direction: column; gap: 8px; }
#player-melds { display: flex; gap: 10px; min-height: 0; }
#player-melds .meld { display: flex; gap: 2px; }
#hand { display: flex; flex-wrap: wrap; gap: 4px; min-height: 60px; align-items: flex-end; padding-top: 16px; }
#hand .drawn-gap { width: 14px; }
#hand-actions { display: flex; gap: 8px; flex-wrap: wrap; }
#hand-actions .pixel-btn.win-call { background: #7ee2a8; }

/* ═══ Dialog & toast ═══ */

#mj-dialog {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}
#mj-dialog[hidden] { display: none; }
.mj-dialog-box {
  background: var(--win-bg);
  border: 2px solid;
  border-color: var(--bevel-light) var(--bevel-dark) var(--bevel-dark) var(--bevel-light);
  outline: 1px solid rgba(0, 0, 0, .55);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, .35);
  max-width: 460px;
  width: 100%;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}
#mj-dialog-title { font-size: 14px; }
#mj-dialog-body { font-size: 12px; line-height: 1.55; }
#mj-dialog-body .tile-row { display: flex; flex-wrap: wrap; gap: 3px; margin: 8px 0; }
#mj-dialog-body ul { margin: 6px 0; padding-left: 18px; }

#toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  background: #23232a;
  color: #ffe9b0;
  font-size: 9px;
  padding: 8px 14px;
  border: 1px solid #ffe9b0;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, .4);
  z-index: 90;
  max-width: 90vw;
  text-align: center;
}
#toast[hidden] { display: none; }

/* ═══ Small screens ═══ */

@media (max-width: 560px) {
  .mj-view { padding: 8px; }
  .tile { width: 30px; height: 44px; }
  .tile .t-num { font-size: 14px; }
  .tile .t-glyph { font-size: 11px; }
  .tile .t-big { font-size: 15px; }
  .tile .t-sub { display: none; }
  #lesson-card { padding: 14px; }
}

/* ═══ American additions: jokers, flowers, selection, the card ═══ */

.tile.h-Joker { background: #efe6ff; }
.tile.h-Joker .t-big { color: #6a3fb5; }
.tile.h-Flower .t-big { color: #c2559a; }

.tile.sel {
  outline: 3px solid var(--warn);
  outline-offset: 1px;
  transform: translateY(-8px);
}
button.tile.sel:hover { transform: translateY(-8px); }
button.tile:disabled { opacity: .55; }

#card-btn.active { background: var(--accent); color: #fff; }

#card-panel {
  background: #fffdf4;
  border: 2px solid #a07a1e;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, .25);
  padding: 10px 12px;
  max-height: 320px;
  overflow-y: auto;
}
#card-panel[hidden] { display: none; }
.card-head { font-size: 9px; color: #a07a1e; margin-bottom: 8px; }

.card-sheet { display: flex; flex-direction: column; gap: 6px; }
.card-cat {
  font-size: 9px;
  color: var(--accent);
  border-bottom: 1px solid var(--bevel-dark);
  padding-bottom: 2px;
  margin-top: 6px;
}
.card-cat:first-child { margin-top: 0; }
.card-hand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  padding: 3px 6px;
  border: 1px solid transparent;
}
.card-hand.target { border-color: var(--accent); background: #f2f0fa; }
.card-notation { font-family: 'Silkscreen', monospace; font-size: 11px; letter-spacing: 1px; }
.cn.r1 { color: #2a4fb0; }
.cn.r2 { color: #b03434; }
.cn.r3 { color: #2e7d3c; }
.cn.n  { color: #444; }
.cn.f  { color: #c2559a; }
.card-pts { font-size: 9px; color: var(--muted); }
.card-badge {
  font-family: 'Silkscreen', monospace;
  font-size: 8px;
  padding: 1px 6px;
  border: 1px solid var(--bevel-dark);
  background: var(--win-bg);
}
.card-badge.best { background: var(--accent); color: #fff; border-color: var(--accent); }
.card-badge.dead { color: var(--muted); }
.card-note { flex-basis: 100%; font-size: 10px; color: var(--muted); }

#lesson-body .card-sheet {
  border: 2px solid #a07a1e;
  background: #fffdf4;
  padding: 10px 12px;
  margin: 12px 0;
}