* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #0e1624;
  --surface:    #141f30;
  --card:       #182538;
  --border:     #243650;
  --border2:    #304a6a;
  --text:       #edf6ff;
  --muted:      #7a9ab8;
  --x-color:    #ff637a;
  --x-glow:     rgba(255,99,122,0.4);
  --o-color:    #4aabff;
  --o-glow:     rgba(74,171,255,0.4);
  --warn:       #ffbe38;
  --danger:     #ff5555;
  --green:      #4dd990;
  --green-glow: rgba(77,217,144,0.38);
  --cell:       86px;
  --gap:        6px;
}

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 70% 55% at 50% -8%,  rgba(74,171,255,0.16) 0%, transparent 55%),
    radial-gradient(ellipse 45% 35% at 85% 75%,  rgba(167,139,250,0.07) 0%, transparent 50%),
    radial-gradient(circle at 1px 1px, rgba(255,255,255,0.036) 1px, transparent 0);
  background-size: auto, auto, 28px 28px;
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 16px 12px;
  gap: 12px;
}

/* ---- HEADER ---- */
#page-header {
  display: flex;
  align-items: center;
  gap: 16px;
}

#game-logo {
  filter: drop-shadow(0 0 8px rgba(74,171,255,0.3));
  flex-shrink: 0;
}

#title-block {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

h1 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 5px;
  text-transform: uppercase;
  background: linear-gradient(120deg, #4da6ff 0%, #a78bfa 42%, #ff6b8a 78%, #4da6ff 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: titleShimmer 5s linear infinite;
}

@keyframes titleShimmer {
  0%   { background-position: 0%   center; }
  100% { background-position: 200% center; }
}

.subtitle {
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 2.5px;
  text-transform: uppercase;
}

/* ---- STATUS BAR ---- */
#status-bar {
  display: flex;
  align-items: stretch;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 13px;
  overflow: hidden;
  box-shadow: 0 4px 28px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.04);
}

.player-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 26px;
  min-width: 108px;
  position: relative;
  transition: opacity 0.3s, background 0.3s;
}

.player-panel.inactive { opacity: 0.22; }
.player-panel.active-x { background: rgba(255,99,122,0.09); }
.player-panel.active-o { background: rgba(74,171,255,0.09); }

.player-panel.active-x::after,
.player-panel.active-o::after {
  content: '';
  position: absolute;
  bottom: 0; left: 15%; right: 15%;
  height: 2px;
  border-radius: 1px;
}
.player-panel.active-x::after { background: linear-gradient(90deg, transparent, var(--x-color), transparent); }
.player-panel.active-o::after { background: linear-gradient(90deg, transparent, var(--o-color), transparent); }

.status-piece {
  width: 28px;
  height: 28px;
  position: relative;
  flex-shrink: 0;
}

.status-piece.x::before,
.status-piece.x::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--x-color), #ff8e9a);
  border-radius: 2px;
  top: 50%; left: 0;
  box-shadow: 0 0 8px var(--x-glow);
}
.status-piece.x::before { transform: translateY(-50%) rotate(45deg); }
.status-piece.x::after  { transform: translateY(-50%) rotate(-45deg); }

.status-piece.o {
  border-radius: 50%;
  border: 3.5px solid var(--o-color);
  box-shadow: 0 0 9px var(--o-glow);
}

.player-label { font-size: 0.58rem; color: var(--muted); letter-spacing: 2px; text-transform: uppercase; }

.player-score { font-size: 1.5rem; font-weight: 800; }
#panel-o .player-score { color: var(--o-color); text-shadow: 0 0 16px var(--o-glow); }
#panel-x .player-score { color: var(--x-color); text-shadow: 0 0 16px var(--x-glow); }

.vs-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 18px;
  border-left:  1px solid var(--border);
  border-right: 1px solid var(--border);
}

.vs-text {
  font-size: 0.56rem;
  color: var(--border2);
  letter-spacing: 4px;
  font-weight: 700;
}

#turn-indicator {
  font-size: 0.66rem;
  color: var(--muted);
  white-space: nowrap;
  text-align: center;
  max-width: 120px;
}

/* ---- SETTINGS ---- */
#settings {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  font-size: 0.72rem;
  color: var(--muted);
  align-items: center;
}

.setting-group {
  display: flex;
  align-items: center;
  gap: 7px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 5px 12px;
  transition: border-color 0.2s;
}
.setting-group:focus-within { border-color: var(--border2); }

select {
  background: transparent;
  border: none;
  color: var(--text);
  font-family: inherit;
  font-size: 0.75rem;
  cursor: pointer;
  outline: none;
}
select option { background: #182538; }

/* ---- RESULT BANNER ---- */
#result-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  background: linear-gradient(135deg, #192538, #121e2c);
  border: 1px solid var(--border2);
  border-radius: 14px;
  padding: 12px 20px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.05);
  animation: bannerIn 0.28s cubic-bezier(0.34, 1.3, 0.64, 1) forwards;
  width: 100%;
  max-width: 740px;
}

@keyframes bannerIn {
  from { transform: translateY(-10px) scale(0.97); opacity: 0; }
  to   { transform: translateY(0)     scale(1);    opacity: 1; }
}

#result-info {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex: 1;
  min-width: 0;
}

#result-title {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 1px;
  white-space: nowrap;
  text-shadow: 0 0 28px currentColor;
}

#result-score {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

#result-name-row {
  display: flex;
  gap: 7px;
  align-items: center;
}

#name-input {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border2);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.8rem;
  padding: 6px 10px;
  outline: none;
  width: 140px;
  transition: border-color 0.2s;
}
#name-input::placeholder { color: var(--border2); }
#name-input:focus { border-color: var(--o-color); }

.btn-sm {
  padding: 6px 12px;
  font-size: 0.76rem;
  width: auto;
}

#result-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}
#result-actions .btn { width: auto; padding: 7px 16px; font-size: 0.78rem; }

/* ---- BOARD FROZEN ---- */
#board-wrap.frozen::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 18px;
  background: rgba(10,18,30,0.18);
  pointer-events: none;
}
#board-wrap { position: relative; }

/* ---- MAIN ZONE ---- */
#main-zone {
  display: flex;
  gap: 14px;
  align-items: stretch;
}

#board-column {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ---- BOARD ---- */
#board-wrap {
  background: linear-gradient(150deg, #131f30 0%, #0f1824 100%);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: var(--gap);
  box-shadow:
    0 14px 60px rgba(0,0,0,0.6),
    0 0 0 1px rgba(74,171,255,0.04),
    inset 0 1px 0 rgba(255,255,255,0.04);
}

#board {
  display: grid;
  grid-template-columns: repeat(5, var(--cell));
  grid-template-rows: repeat(5, var(--cell));
  gap: var(--gap);
}

/* ---- CELL ---- */
.cell {
  width: var(--cell);
  height: var(--cell);
  background: linear-gradient(145deg, #182538, #121e2e);
  border: 1.5px solid var(--border);
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: border-color 0.15s, background 0.15s, transform 0.12s, box-shadow 0.15s;
  overflow: hidden;
}

.cell::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, rgba(255,255,255,0.03) 0%, transparent 55%);
  border-radius: inherit;
  pointer-events: none;
}

.cell.empty:hover {
  border-color: rgba(74,171,255,0.5);
  background: linear-gradient(145deg, #1f2f48, #182438);
  transform: scale(1.05);
  box-shadow: 0 5px 22px rgba(0,0,0,0.35), 0 0 18px rgba(74,171,255,0.12);
}

.cell.taken { cursor: default; }
.cell.taken:hover { transform: none; }

.cell.empty:hover::after {
  content: var(--hover-ghost, '');
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.18;
  pointer-events: none;
}

.cell.win-cell {
  border-color: var(--green) !important;
  background: linear-gradient(145deg, rgba(61,204,130,0.13), rgba(61,204,130,0.05)) !important;
  box-shadow: 0 0 0 1px rgba(61,204,130,0.35), 0 0 24px var(--green-glow) !important;
  transform: none !important;
  animation: winPulse 1.4s ease-in-out infinite;
}

@keyframes winPulse {
  0%, 100% { box-shadow: 0 0 0 1px rgba(61,204,130,0.35), 0 0 24px var(--green-glow); }
  50%       { box-shadow: 0 0 0 1px rgba(61,204,130,0.55), 0 0 44px var(--green-glow); }
}

/* ---- PIECE ---- */
.piece {
  position: relative;
  z-index: 2;
  width: 50px;
  height: 50px;
  flex-shrink: 0;
}

.piece.x::before,
.piece.x::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, #ff3d5c, #ff8e9a);
  border-radius: 3px;
  top: 50%; left: 0;
  box-shadow: 0 0 12px var(--x-glow);
}
.piece.x::before { transform: translateY(-50%) rotate(45deg); }
.piece.x::after  { transform: translateY(-50%) rotate(-45deg); }

.piece.o {
  border-radius: 50%;
  border: 6px solid var(--o-color);
  box-shadow: 0 0 14px var(--o-glow), inset 0 0 8px rgba(74,171,255,0.1);
  background: transparent;
}

.piece.pop {
  animation: popIn 0.25s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes popIn {
  from { transform: scale(0.1) rotate(20deg); opacity: 0; }
  to   { transform: scale(1)   rotate(0deg);  opacity: 1; }
}

/* ---- RING TIMER ---- */
.ring-svg {
  position: absolute;
  inset: 4px;
  pointer-events: none;
  transform: rotate(-90deg);
  z-index: 1;
}

.ring-track { fill: none; stroke: rgba(255,255,255,0.05); stroke-width: 2.5; }
.ring-fill  {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.5s ease, stroke 0.5s;
}

/* ---- LEGEND ---- */
#legend {
  display: flex;
  gap: 16px;
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.5px;
  justify-content: center;
}

.legend-item { display: flex; align-items: center; gap: 6px; }

.legend-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  border: 2px solid;
  flex-shrink: 0;
}

.legend-dot.fresh { border-color: var(--green);  background: rgba(61,204,130,0.2);  box-shadow: 0 0 5px rgba(61,204,130,0.5); }
.legend-dot.aging { border-color: var(--warn);   background: rgba(255,176,32,0.2);  box-shadow: 0 0 5px rgba(255,176,32,0.5); }
.legend-dot.dying { border-color: var(--danger); background: rgba(255,64,64,0.2);   box-shadow: 0 0 5px rgba(255,64,64,0.5); }

/* ---- SIDE PANEL ---- */
#side-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 204px;
}

/* ---- SCOREBOARD ---- */
#scoreboard {
  flex: 1;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.scoreboard-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(74,171,255,0.05), transparent);
  flex-shrink: 0;
}

.scoreboard-title {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--muted);
}

.btn-link {
  background: none;
  border: none;
  color: var(--border2);
  font-family: inherit;
  font-size: 0.62rem;
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 4px;
  transition: color 0.15s;
}
.btn-link:hover { color: var(--danger); }

#score-list {
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-y: auto;
  flex: 1;
}

.score-empty {
  padding: 20px 14px;
  text-align: center;
  font-size: 0.68rem;
  color: var(--border2);
  font-style: italic;
  line-height: 1.5;
}

.score-entry {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  grid-template-rows: auto auto;
  gap: 1px 6px;
  padding: 7px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  font-size: 0.72rem;
  transition: background 0.15s;
}
.score-entry:last-child { border-bottom: none; }
.score-entry:hover { background: rgba(255,255,255,0.02); }

.score-entry.top {
  background: linear-gradient(90deg, rgba(74,171,255,0.07), transparent);
}

.score-rank {
  color: var(--border2);
  font-size: 0.6rem;
  grid-row: 1 / 3;
  display: flex;
  align-items: center;
}
.score-entry.top .score-rank { color: var(--o-color); font-weight: 700; }

.score-pts {
  font-weight: 700;
  color: var(--text);
  font-size: 0.82rem;
  grid-column: 2;
  grid-row: 1;
}
.score-entry.top .score-pts { color: var(--o-color); text-shadow: 0 0 10px var(--o-glow); }

.score-date {
  color: var(--border2);
  font-size: 0.6rem;
  grid-column: 3;
  grid-row: 1;
  text-align: right;
  align-self: center;
}

.score-meta {
  grid-column: 2 / 4;
  grid-row: 2;
  font-size: 0.62rem;
  color: var(--muted);
  display: flex;
  gap: 6px;
}

.score-diff { font-weight: 600; }
.diff-easy   { color: var(--green); }
.diff-medium { color: var(--warn); }
.diff-hard   { color: var(--danger); }

/* ---- CONTROLS ---- */
#controls {
  display: flex;
  flex-direction: column;
  gap: 7px;
  flex-shrink: 0;
}

.btn {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 9px 16px;
  border-radius: 10px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.15s;
  letter-spacing: 0.3px;
  width: 100%;
}

.btn:hover { background: #1e2e44; border-color: var(--border2); color: var(--text); }

.btn.primary {
  background: linear-gradient(135deg, rgba(74,171,255,0.14), rgba(74,171,255,0.07));
  border-color: rgba(74,171,255,0.42);
  color: var(--o-color);
  box-shadow: 0 0 14px rgba(74,171,255,0.08), inset 0 1px 0 rgba(74,171,255,0.1);
}
.btn.primary:hover {
  background: linear-gradient(135deg, rgba(74,171,255,0.24), rgba(74,171,255,0.13));
  border-color: rgba(74,171,255,0.65);
  color: #8dd0ff;
  box-shadow: 0 0 28px rgba(74,171,255,0.22), inset 0 1px 0 rgba(74,171,255,0.15);
}

.btn.danger { border-color: #2e1e22; color: #7a4050; }
.btn.danger:hover { background: #1c0e12; border-color: rgba(255,85,85,0.5); color: var(--danger); }


/* ---- THINKING INDICATOR ---- */
#turn-indicator.thinking {
  color: var(--x-color);
  animation: blink 0.9s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* ---- FOOTER ---- */
.site-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  opacity: 0.2;
  transition: opacity 0.3s;
  margin-top: auto;
  padding-top: 4px;
}
.site-footer:hover { opacity: 0.42; }

.zadeo-logo {
  height: 16px;
  filter: brightness(10) saturate(0);
}

.version-tag {
  font-size: 0.58rem;
  letter-spacing: 2px;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
}

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }