/* ============================================================
   BATTLE GRID — Core game board styles
   ============================================================ */

.battle-grid-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-start;
}

.grid-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-2);
}

/* ── Grid Container ── */
.battle-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: var(--space-4);
  background: rgba(6, 14, 28, 0.55);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: var(--glass-blur);
  box-shadow:
    var(--shadow-md),
    inset 0 1px 0 rgba(185,217,242,0.08),
    inset 0 -1px 0 rgba(6,14,28,0.5);
}

/* ── Column Headers ── */
.grid-col-headers {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-1);
}

.grid-corner { width: 24px; flex-shrink: 0; }

.grid-axis-label {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--cell-size);
  height: 20px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--navy-300);
  letter-spacing: 0.05em;
  flex-shrink: 0;
  text-transform: uppercase;
  opacity: 0.7;
}

/* ── Grid Row ── */
.grid-row {
  display: flex;
  align-items: center;
  gap: 0;
}

.grid-row-label {
  width: 24px;
  height: var(--cell-size);
  flex-shrink: 0;
  font-size: 10px;
}

/* ── Cells ── */
.grid-cell {
  width: var(--cell-size);
  height: var(--cell-size);
  flex-shrink: 0;
  position: relative;
  background: rgba(11, 30, 54, 0.4);
  border: 1px solid rgba(30, 111, 168, 0.12);
  transition: background var(--dur-fast) var(--ease-smooth),
              border-color var(--dur-fast) var(--ease-smooth),
              transform var(--dur-fast) var(--ease-spring);
  overflow: hidden;
}

/* Subtle top and left borders for sea grid look */
.grid-cell::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(94, 176, 232, 0.03) 0%,
    transparent 60%
  );
  pointer-events: none;
}

.cell-inner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Cell States ── */
.grid-cell--placeable:hover {
  background: rgba(30, 111, 168, 0.25);
  border-color: rgba(94, 176, 232, 0.4);
  cursor: crosshair;
  z-index: 1;
}

.grid-cell--targetable {
  cursor: crosshair;
}
.grid-cell--targetable:hover,
.grid-cell--hover {
  background: rgba(30, 111, 168, 0.18);
  border-color: rgba(94, 176, 232, 0.35);
  transform: scale(1.05);
  z-index: 2;
  box-shadow: 0 0 12px rgba(94, 176, 232, 0.2);
}

.grid-cell--pending {
  background: rgba(30, 111, 168, 0.3);
  border-color: rgba(94, 176, 232, 0.5);
}

.grid-cell--ship {
  background: rgba(30, 111, 168, 0.2);
  border-color: rgba(94, 176, 232, 0.3);
}

.grid-cell--hit {
  background: rgba(139, 0, 0, 0.35) !important;
  border-color: rgba(214, 40, 40, 0.5) !important;
  cursor: default !important;
}

.grid-cell--miss {
  background: rgba(110, 123, 133, 0.15) !important;
  border-color: rgba(199, 205, 211, 0.2) !important;
  cursor: default !important;
}

.grid-cell--disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* ── Pegs ── */
.peg {
  width: 45%;
  height: 45%;
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}

.peg--hit {
  background: var(--gradient-hit);
  box-shadow: var(--shadow-glow-hit), inset 0 1px 0 rgba(255,100,100,0.4);
  animation: hitBurst var(--dur-slow) var(--ease-spring) both;
}

.peg--hit::after {
  content: '';
  position: absolute;
  inset: 20%;
  border-radius: 50%;
  background: rgba(255, 180, 180, 0.5);
}

.peg--miss {
  background: var(--gradient-miss);
  opacity: 0.55;
  box-shadow: 0 0 6px rgba(244, 246, 248, 0.2), inset 0 1px 0 rgba(255,255,255,0.5);
  animation: missSettle var(--dur-base) var(--ease-spring) both;
}

/* ── Ship Markers ── */
.ship-marker {
  width: 55%;
  height: 55%;
  border-radius: var(--radius-sm);
  background: var(--gradient-ship);
  box-shadow: 0 0 10px rgba(30,111,168,0.6), inset 0 1px 0 rgba(94,176,232,0.5);
}

.ship-marker--pending {
  background: linear-gradient(135deg, rgba(94,176,232,0.7) 0%, rgba(30,111,168,0.7) 100%);
  box-shadow: 0 0 14px rgba(94,176,232,0.5), inset 0 1px 0 rgba(255,255,255,0.2);
  animation: scaleIn 0.2s var(--ease-spring) both;
}

/* ── Grid glow frame (active game) ── */
.battle-grid--active-turn {
  box-shadow:
    var(--shadow-md),
    0 0 0 2px rgba(94,176,232,0.25),
    0 0 40px rgba(30,111,168,0.2),
    inset 0 1px 0 rgba(185,217,242,0.08);
}

/* ── Coordinates tooltip ── */
.grid-cell[data-coord]::after {
  content: attr(data-coord);
  position: absolute;
  bottom: 2px;
  right: 3px;
  font-family: var(--font-mono);
  font-size: 7px;
  color: var(--navy-300);
  opacity: 0;
  transition: opacity var(--dur-fast);
  pointer-events: none;
}
.grid-cell:hover::after { opacity: 0.5; }