:root {
  --ink: #1c2b36;
  --cream: #f4ede0;
  --cream-deep: #e9dfc9;
  --azul-deep: #123a5e;
  --azul: #1d5a8c;
  --azul-pale: #cfe0ec;
  --terracotta: #c1502e;
  --gold: #cf9d3f;

  --tile-blue: #2f6d9c;
  --tile-yellow: #e2a62b;
  --tile-red: #bd3b2c;
  --tile-black: #262524;
  --tile-cyan: #3fa89b;

  --radius-tile: 6px;
  --radius-card: 4px;
  --shadow-card: 0 10px 30px rgba(18, 58, 94, 0.12);

  --font-display: 'Fraunces', serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at 10% 0%, rgba(207, 224, 236, 0.5), transparent 45%),
    var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--azul-deep);
  margin: 0 0 0.5em;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: var(--azul-deep);
  color: var(--cream);
  border-bottom: 6px solid var(--gold);
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 3px;
  background:
    linear-gradient(135deg, var(--tile-cyan) 25%, transparent 25%) 0 0/13px 13px,
    linear-gradient(135deg, transparent 75%, var(--tile-blue) 75%) 0 0/13px 13px;
  box-shadow: 0 0 0 2px var(--gold);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.02em;
}

.pill {
  font-size: 0.72rem;
  padding: 4px 12px;
  border-radius: 999px;
  text-transform: lowercase;
  letter-spacing: 0.03em;
  border: 1px solid rgba(244, 237, 224, 0.4);
}
.pill--offline { background: rgba(193, 80, 46, 0.25); }
.pill--online { background: rgba(63, 168, 155, 0.25); }

#app { max-width: 1180px; margin: 0 auto; padding: 40px 24px 80px; }

.view { animation: fade-in 0.25s ease; }
@keyframes fade-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.hero { max-width: 640px; margin: 0 auto 40px; text-align: center; }
.hero h1 { font-size: clamp(1.8rem, 3vw, 2.6rem); line-height: 1.2; }
.hero-sub { color: #4a5a67; font-size: 1.02rem; }

.lobby-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 760px;
  margin: 0 auto;
}

.card {
  background: #fffdf8;
  border: 1px solid var(--cream-deep);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-card);
  position: relative;
}
.card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(18, 58, 94, 0.12);
  border-radius: 2px;
  pointer-events: none;
}
.card--wide { max-width: 640px; margin: 0 auto; text-align: center; }

.field { display: block; margin-bottom: 16px; text-align: left; }
.field span { display: block; font-size: 0.82rem; color: #5a6a76; margin-bottom: 6px; }
.field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--cream-deep);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.98rem;
  background: #fffef9;
}
.field input:focus { outline: 2px solid var(--azul); outline-offset: 1px; }

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 4px;
  border: none;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.btn:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--terracotta); color: #fff8ef; }
.btn--secondary { background: var(--azul); color: #fff8ef; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.error-text { color: var(--terracotta); text-align: center; margin-top: 18px; font-weight: 600; }
.muted { color: #6b7a85; font-size: 0.9rem; }

.game-code {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.12em;
  color: var(--terracotta);
  background: var(--azul-pale);
  border-radius: 4px;
  padding: 10px;
  margin: 14px 0 20px;
}

.player-list { list-style: none; padding: 0; margin: 0 0 20px; }
.player-list li {
  padding: 8px 14px;
  border-bottom: 1px solid var(--cream-deep);
  text-align: left;
}
.player-list li:last-child { border-bottom: none; }

/* ---- Game layout ---- */
.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 1fr);
  gap: 28px;
  align-items: start;
}
@media (max-width: 900px) {
  .game-layout { grid-template-columns: 1fr; }
}

.turn-banner {
  background: var(--azul-deep);
  color: var(--cream);
  padding: 12px 18px;
  border-radius: 4px;
  font-weight: 600;
  margin-bottom: 18px;
  border-left: 5px solid var(--gold);
}
.turn-banner.mine { border-left-color: var(--terracotta); }

.factories {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 24px;
}

.factory {
  width: 108px;
  height: 108px;
  border-radius: 50%;
  background: #fffdf8;
  border: 3px solid var(--azul-pale);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 5px;
  align-content: center;
  justify-items: center;
  padding: 12px;
  box-shadow: inset 0 0 0 6px #fff, 0 6px 14px rgba(18,58,94,0.10);
}
.factory-tiles { display: contents; }

.center-pool { margin-bottom: 18px; }
.center-pool h3, .log-panel h3 { font-size: 1rem; margin-bottom: 10px; }
.tile-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 40px;
  padding: 10px;
  background: rgba(207, 224, 236, 0.35);
  border-radius: 6px;
}

.tile {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-tile);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.35), 0 2px 4px rgba(0,0,0,0.25);
  cursor: default;
  position: relative;
}
.tile.clickable { cursor: pointer; }
.tile.clickable:hover { transform: scale(1.08); }
.tile.marker {
  background: repeating-linear-gradient(45deg, #fff, #fff 12.5%, var(--azul-deep) 12.5%, var(--azul-deep) 25%);
}

.tile--blue { 
  background: radial-gradient(circle at 30% 30%, #4691c8 0%, var(--tile-blue) 60%); 
}
.tile--yellow {
  background-color: var(--tile-yellow);
  background-image:
    radial-gradient(circle at 0 0, transparent 25%, var(--tile-red) 28%, var(--tile-red) 37.5%, transparent 41%),
    radial-gradient(circle at 100% 0, transparent 25%, var(--tile-red) 28%, var(--tile-red) 37.5%, transparent 41%),
    radial-gradient(circle at 0 100%, transparent 25%, var(--tile-red) 28%, var(--tile-red) 37.5%, transparent 41%),
    radial-gradient(circle at 100% 100%, transparent 25%, var(--tile-red) 28%, var(--tile-red) 37.5%, transparent 41%);
  background-size: 50% 50%;
}
.tile--red { 
  background: radial-gradient(circle at 30% 30%, #e25a49 0%, var(--tile-red) 60%); 
}
.tile--black {
  background-color: var(--tile-black);
  background-image:
    radial-gradient(circle at center, var(--tile-cyan) 1.5px, transparent 2px),
    linear-gradient(45deg, transparent 48%, rgba(244, 237, 224, 0.25) 48%, rgba(244, 237, 224, 0.25) 52%, transparent 52%),
    linear-gradient(-45deg, transparent 48%, rgba(244, 237, 224, 0.25) 48%, rgba(244, 237, 224, 0.25) 52%, transparent 52%);
  background-size: 31.25% 31.25%;
}
.tile--cyan {
  background-color: var(--tile-cyan);
  background-image:
    linear-gradient(45deg, transparent 45%, #fff 45%, #fff 55%, transparent 55%),
    linear-gradient(-45deg, transparent 45%, #fff 45%, #fff 55%, transparent 55%),
    linear-gradient(90deg, transparent 48%, #fff 48%, #fff 52%, transparent 52%),
    linear-gradient(0deg, transparent 48%, #fff 48%, #fff 52%, transparent 52%);
  background-size: 50% 50%;
  background-position: center;
}
.tile--empty { background: transparent; box-shadow: inset 0 0 0 2px var(--cream-deep); }
.tile--ghost { opacity: 0.28; }

.selection-bar {
  background: #fffdf8;
  border: 2px dashed var(--terracotta);
  border-radius: 6px;
  padding: 14px;
  margin-bottom: 20px;
}
.selection-bar span { display: block; }
.selection-bar span#selection-label { font-weight: 600; margin-bottom: 4px; }
.selection-hint { font-size: 0.85rem; color: #6b7a85; }

.game-bottom-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: stretch;
}
@media (max-width: 680px) {
  .game-bottom-panels {
    grid-template-columns: 1fr;
  }
}

.log-panel {
  height: 240px;
  display: flex;
  flex-direction: column;
  background: #fffdf8;
  border: 1px solid var(--cream-deep);
  border-radius: 6px;
  padding: 12px 14px;
}
.log-panel h3 {
  font-size: 1rem;
  margin: 0 0 8px;
}
.log-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  overflow-y: auto;
}
.log-panel li {
  font-size: 0.82rem;
  color: #57666f;
  padding: 4px 0;
  border-bottom: 1px dotted var(--cream-deep);
}

.chat-panel {
  height: 240px;
  display: flex;
  flex-direction: column;
  background: #fffdf8;
  border: 1px solid var(--cream-deep);
  border-radius: 6px;
  padding: 12px 14px;
  text-align: left;
}
.chat-panel--lobby,
.chat-panel--end {
  height: 210px;
  margin: 20px 0 10px;
  box-shadow: inset 0 0 0 1px rgba(18, 58, 94, 0.08);
}
.log-panel--end {
  height: 180px;
  margin: 10px 0 16px;
  text-align: left;
  box-shadow: inset 0 0 0 1px rgba(18, 58, 94, 0.08);
}
.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.chat-header h3 {
  font-size: 1rem;
  margin: 0;
}
.chat-messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 8px;
  padding-right: 4px;
}
.chat-messages:empty::before {
  content: "Nessun messaggio. Saluta gli altri giocatori!";
  color: #8a97a1;
  font-size: 0.8rem;
  font-style: italic;
  margin: auto 0;
}
.chat-msg {
  font-size: 0.82rem;
  line-height: 1.35;
  word-break: break-word;
  padding: 2px 0;
}
.chat-msg-sender {
  font-weight: 600;
  color: var(--azul-deep);
}
.chat-msg.me .chat-msg-sender {
  color: var(--terracotta);
}
.chat-msg-text {
  color: var(--ink);
}
.chat-msg-time {
  font-size: 0.7rem;
  color: #8a97a1;
  margin-left: 6px;
  white-space: nowrap;
}
.chat-msg.system {
  color: #5a6a76;
  font-style: italic;
  font-size: 0.78rem;
  background: rgba(207, 224, 236, 0.35);
  padding: 3px 8px;
  border-radius: 4px;
}
.chat-input-row {
  display: flex;
  gap: 6px;
  margin-top: auto;
}
.chat-input-row input {
  flex: 1;
  padding: 6px 10px;
  font-size: 0.84rem;
  border: 1px solid var(--cream-deep);
  border-radius: 4px;
  background: #fffef9;
  color: var(--ink);
  font-family: var(--font-body);
}
.chat-input-row input:focus {
  outline: 2px solid var(--azul);
  outline-offset: 1px;
}
.btn--sm {
  padding: 6px 14px;
  font-size: 0.84rem;
}

.players-column { display: flex; flex-direction: column; gap: 18px; }

.player-board {
  background: #fffdf8;
  border: 1px solid var(--cream-deep);
  border-radius: 6px;
  padding: 16px;
  box-shadow: var(--shadow-card);
}
.player-board.active { border-color: var(--terracotta); box-shadow: 0 0 0 2px var(--terracotta); }
.player-board.me .player-name::after { content: " (tu)"; color: var(--terracotta); font-weight: 400; }

.player-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}
.player-name { font-weight: 700; }
.player-score {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--terracotta);
}

.board-grids {
  display: grid;
  grid-template-columns: 132px 132px;
  gap: 16px;
  align-items: start;
}

.pattern-lines {
  display: grid;
  grid-template-rows: repeat(5, 24px);
  gap: 3px;
  width: 132px;
}
.pattern-line {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 3px;
  width: 100%;
  height: 24px;
  margin: 0;
  padding: 0;
  border-radius: 4px;
  box-sizing: border-box;
  position: relative;
  transition: background 0.12s ease, box-shadow 0.12s ease;
}
.pattern-line .tile, .pattern-line .tile--empty {
  width: 24px;
  height: 24px;
  border-radius: 4px;
}

.pattern-line.selectable {
  cursor: pointer;
  background: rgba(207, 224, 236, 0.35);
  box-shadow: 0 0 0 1.5px var(--azul-pale);
}
.pattern-line.selectable:hover {
  background: rgba(207, 224, 236, 0.7);
  box-shadow: 0 0 0 2px var(--azul);
  z-index: 1;
}
.pattern-line.selectable:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 1px;
  z-index: 2;
}
.pattern-line.unselectable {
  opacity: 0.35;
  cursor: not-allowed;
}

.wall-grid {
  display: grid;
  grid-template-columns: repeat(5, 24px);
  grid-template-rows: repeat(5, 24px);
  gap: 3px;
  width: 132px;
}
.wall-cell {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.35);
}
.wall-cell.empty { opacity: 0.22; }

/* Applied explicitly (via JS) only to tiles that are actually new since the last render. */
.tile-pop { animation: tile-pop 260ms cubic-bezier(0.34, 1.56, 0.64, 1) both; }

@keyframes tile-pop {
  0% { opacity: 0; transform: scale(0.35); }
  60% { opacity: 1; transform: scale(1.15); }
  100% { opacity: 1; transform: scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .tile-pop { animation: none; }
}

.floor-line {
  display: flex;
  gap: 3px;
  margin-top: 12px;
  padding: 6px;
  border-radius: 6px;
  border: 2px solid transparent;
  transition: background 0.12s ease, border-color 0.12s ease, transform 0.12s ease;
}
.floor-slot {
  width: 26px; height: 26px; border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.62rem; color: #8a97a1; font-weight: 700;
  box-shadow: inset 0 0 0 2px var(--cream-deep);
}
.floor-line.selectable {
  cursor: pointer;
  border-color: var(--terracotta);
  background: rgba(193, 80, 46, 0.08);
}
.floor-line.selectable:hover {
  background: rgba(193, 80, 46, 0.18);
  transform: translateY(-1px);
}
.floor-line.selectable::after {
  align-self: center;
  margin-left: 6px;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--terracotta);
  white-space: nowrap;
}

.score-list { list-style: none; padding: 0; text-align: left; max-width: 340px; margin: 0 auto 24px; }
.score-list li {
  display: flex; justify-content: space-between;
  padding: 10px 14px; border-bottom: 1px solid var(--cream-deep);
}
.score-list li.winner { font-weight: 700; color: var(--terracotta); }

@media (max-width: 520px) {
  .topbar { padding: 14px 16px; }
  #app { padding: 24px 14px 60px; }
  .factory { width: 92px; height: 92px; }
}