/* ── Reset & Vars ────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #080c10;
  --surface:    #0e1520;
  --surface2:   #131d2b;
  --border:     #1e2d40;
  --border2:    #2a3f58;
  --text:       #c8dff0;
  --muted:      #3a5570;
  --accent:     #00d4ff;
  --accent2:    #0090cc;
  --hit:        #ff4040;
  --miss:       #334455;
  --ship:       #1a6b3a;
  --ship-h:     #22a050;
  --sunk:       #5a1010;
  --gold:       #ffc843;
  --success:    #00e676;

  --cell: 38px;
  --gap:  2px;
}

html, body { height: 100%; background: var(--bg); color: var(--text); font-family: 'Share Tech Mono', monospace; overflow: hidden; }

/* ── CRT scanlines ───────────────────────────────────────────────────── */
.scanlines {
  position: fixed; inset: 0; pointer-events: none; z-index: 1000;
  background: repeating-linear-gradient(0deg, transparent, transparent 3px, rgba(0,0,0,0.08) 3px, rgba(0,0,0,0.08) 4px);
}

/* ── App / Screens ───────────────────────────────────────────────────── */
.app { position: relative; z-index: 1; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.screen { display: none; width: 100%; height: 100%; align-items: center; justify-content: center; }
.screen.active { display: flex; }

/* ── LOBBY ───────────────────────────────────────────────────────────── */
.lobby-card {
  background: var(--surface);
  border: 1px solid var(--border2);
  padding: 44px 52px;
  display: flex; flex-direction: column; align-items: center; gap: 28px;
  min-width: 420px;
  box-shadow: 0 0 80px rgba(0,212,255,0.07), 0 30px 80px rgba(0,0,0,0.7);
  animation: fadeUp 0.4s cubic-bezier(0.16,1,0.3,1);
}
@keyframes fadeUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.game-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 4.2rem; line-height: 1; letter-spacing: 0.12em; text-align: center;
  color: var(--accent);
  text-shadow: 0 0 30px rgba(0,212,255,0.5), 0 0 80px rgba(0,212,255,0.2);
}
.game-sub { font-size: 0.55rem; letter-spacing: 0.35em; color: var(--muted); text-transform: uppercase; margin-top: -8px; }

.lobby-info { display: flex; align-items: center; gap: 10px; font-size: 0.65rem; color: var(--muted); letter-spacing: 0.1em; }

.spinner { width: 14px; height: 14px; border: 2px solid var(--border2); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.lobby-slots { display: flex; align-items: center; gap: 16px; width: 100%; }
.slot { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 16px 12px; border: 1px solid var(--border2); background: var(--surface2); font-size: 0.55rem; letter-spacing: 0.1em; transition: border-color 0.3s; }
.slot.connected { border-color: var(--accent); }
.slot.me        { border-color: var(--gold); }
.slot-sym { font-size: 1.8rem; color: var(--muted); }
.slot.connected .slot-sym { color: var(--accent); }
.slot.me .slot-sym        { color: var(--gold); }
.slot-vs { font-family: 'Bebas Neue', sans-serif; font-size: 1.6rem; color: var(--border2); letter-spacing: 0.1em; }

.lobby-actions { display: flex; flex-direction: column; gap: 10px; width: 100%; }
.hidden { display: none !important; }

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
  font-family: 'Share Tech Mono', monospace; font-size: 0.65rem; letter-spacing: 0.15em;
  padding: 12px 18px; border: 1px solid; cursor: pointer; text-transform: uppercase;
  transition: all 0.15s; background: transparent;
}
.btn-primary  { background: var(--accent); border-color: var(--accent); color: #000; font-weight: 700; }
.btn-primary:hover  { background: #33ddff; box-shadow: 0 0 20px rgba(0,212,255,0.4); }
.btn-primary:disabled { opacity: 0.3; cursor: not-allowed; }
.btn-secondary { border-color: var(--gold); color: var(--gold); }
.btn-secondary:hover { background: rgba(255,200,67,0.08); box-shadow: 0 0 15px rgba(255,200,67,0.2); }
.btn-ghost { border-color: var(--border2); color: var(--muted); }
.btn-ghost:hover { border-color: var(--text); color: var(--text); }

/* ── Common ──────────────────────────────────────────────────────────── */
.top-bar { display: flex; align-items: center; gap: 16px; }
.title-sm { font-family: 'Bebas Neue', sans-serif; font-size: 2.2rem; letter-spacing: 0.2em; color: var(--accent); text-shadow: 0 0 15px rgba(0,212,255,0.3); }
.badge { font-size: 0.5rem; letter-spacing: 0.2em; padding: 4px 10px; border: 1px solid var(--muted); color: var(--muted); text-transform: uppercase; }

/* ── PLACEMENT ───────────────────────────────────────────────────────── */
.place-layout { display: flex; flex-direction: column; align-items: center; gap: 16px; padding: 20px; animation: fadeUp 0.35s cubic-bezier(0.16,1,0.3,1); }
.place-instructions { font-size: 0.65rem; letter-spacing: 0.08em; color: var(--muted); text-align: center; line-height: 1.8; }
.hint { font-size: 0.55rem; color: var(--border2); }

.place-body { display: flex; gap: 30px; align-items: flex-start; }

/* Ship list */
.ship-list { display: flex; flex-direction: column; gap: 8px; min-width: 180px; }
.ship-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; border: 1px solid var(--border);
  cursor: pointer; transition: border-color 0.15s, background 0.15s;
  font-size: 0.55rem; letter-spacing: 0.08em;
}
.ship-item:hover:not(.placed):not(.disabled) { border-color: var(--accent); background: rgba(0,212,255,0.04); }
.ship-item.selected { border-color: var(--accent); background: rgba(0,212,255,0.08); }
.ship-item.placed   { opacity: 0.4; cursor: default; }
.ship-item.disabled { opacity: 0.3; cursor: default; }
.ship-squares { display: flex; gap: 2px; }
.ship-sq { width: 10px; height: 10px; background: var(--ship-h); }
.ship-name { flex: 1; color: var(--text); }
.ship-size { color: var(--muted); }

/* Grid */
.grid-wrap { position: relative; }
.grid {
  display: grid;
  grid-template-columns: repeat(10, var(--cell));
  grid-template-rows:    repeat(10, var(--cell));
  gap: var(--gap);
  background: var(--border);
  border: var(--gap) solid var(--border);
  position: relative;
}

/* Row/col labels */
.grid::before {
  content: 'A B C D E F G H I J';
  position: absolute; top: calc(-1 * (var(--cell) * 0.7));
  left: 0; right: 0;
  display: flex; justify-content: space-around;
  font-size: 0.5rem; color: var(--muted); letter-spacing: 0.05em;
  white-space: pre;
  pointer-events: none;
}

.cell-g {
  background: var(--surface2);
  cursor: crosshair;
  transition: background 0.12s;
  position: relative;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  user-select: none;
}

/* Placement states */
.cell-g.preview      { background: rgba(0,212,255,0.18); }
.cell-g.preview-bad  { background: rgba(255,64,64,0.2); }
.cell-g.has-ship     { background: var(--ship); }
.cell-g.has-ship:hover { background: var(--ship-h); }

/* Attack states */
.cell-g.hit  { background: var(--hit); cursor: default; }
.cell-g.miss { background: var(--miss); cursor: default; }
.cell-g.sunk { background: var(--sunk); cursor: default; }
.cell-g.hit::after, .cell-g.sunk::after  { content: '✕'; color: #ff9999; font-size: 1rem; }
.cell-g.miss::after { content: '·'; color: #556677; font-size: 1.4rem; }
.cell-g.already { cursor: not-allowed; }

/* Own grid overlay shots */
.cell-g.enemy-hit  { background: var(--hit); }
.cell-g.enemy-miss { background: rgba(0,212,255,0.06); }
.cell-g.enemy-hit::after  { content: '✕'; color: #ff9999; font-size: 1rem; }
.cell-g.enemy-miss::after { content: '·'; color: #334455; font-size: 1.4rem; }

.cell-g.own-ship  { background: var(--ship); }
.cell-g.own-ship.enemy-hit { background: var(--sunk); }
.cell-g.own-sunk  { background: var(--sunk); }

.cell-g.can-shoot:hover { background: rgba(0,212,255,0.15); cursor: crosshair; }

/* Place footer */
.place-footer { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.wait-msg { display: flex; align-items: center; gap: 10px; font-size: 0.6rem; color: var(--muted); letter-spacing: 0.1em; }

/* ── GAME ─────────────────────────────────────────────────────────────── */
.game-layout { display: flex; flex-direction: column; align-items: center; gap: 18px; padding: 16px; animation: fadeUp 0.35s cubic-bezier(0.16,1,0.3,1); }

.turn-indicator { font-size: 0.6rem; letter-spacing: 0.15em; padding: 4px 12px; border: 1px solid; text-transform: uppercase; transition: all 0.3s; }
.turn-indicator.my-turn    { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 12px rgba(0,212,255,0.2); }
.turn-indicator.enemy-turn { border-color: var(--muted); color: var(--muted); }

.grids-row { display: flex; align-items: flex-start; gap: 20px; }
.grid-panel { display: flex; flex-direction: column; gap: 10px; align-items: center; }
.grid-title { font-size: 0.55rem; letter-spacing: 0.25em; text-transform: uppercase; }
.enemy-title { color: var(--hit); }
.own-title   { color: var(--accent); }

.grid-divider { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 0 4px; align-self: center; }
.divider-line { width: 1px; height: 80px; background: linear-gradient(to bottom, transparent, var(--border2), transparent); }
.divider-icon { font-size: 1.4rem; color: var(--border2); }

.fleet-status { display: flex; flex-wrap: wrap; gap: 4px; max-width: calc(10 * (var(--cell) + var(--gap))); justify-content: center; }
.fleet-ship {
  display: flex; gap: 1px; align-items: center;
  padding: 3px 5px; border: 1px solid var(--border);
  font-size: 0.4rem; letter-spacing: 0.1em; color: var(--muted);
  transition: opacity 0.3s;
}
.fleet-ship.sunk { opacity: 0.35; text-decoration: line-through; border-color: var(--sunk); }
.fleet-sq { width: 7px; height: 7px; background: var(--ship-h); }
.fleet-ship.sunk .fleet-sq { background: var(--sunk); }

/* Result */
.result-banner {
  font-family: 'Bebas Neue', sans-serif; font-size: 2.4rem; letter-spacing: 0.2em;
  padding: 12px 32px; border: 1px solid; text-align: center;
  animation: fadeUp 0.3s cubic-bezier(0.16,1,0.3,1);
}
.result-banner.win  { color: var(--success);  border-color: var(--success);  box-shadow: 0 0 30px rgba(0,230,118,0.2); }
.result-banner.lose { color: var(--hit);       border-color: var(--hit);       box-shadow: 0 0 30px rgba(255,64,64,0.2); }
.result-banner.spec { color: var(--gold);      border-color: var(--gold); }

.game-actions { display: flex; gap: 12px; }
.spec-note { font-size: 0.55rem; letter-spacing: 0.15em; color: var(--muted); padding: 8px 18px; border: 1px dashed var(--border); }

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  :root { --cell: 28px; }
  .grids-row { flex-direction: column; gap: 16px; }
  .grid-divider { flex-direction: row; }
  .divider-line { width: 80px; height: 1px; }
}
@media (max-width: 500px) {
  :root { --cell: 22px; }
  .lobby-card { padding: 28px 20px; min-width: 0; width: 94vw; }
  .game-title { font-size: 3rem; }
  .place-body { flex-direction: column; align-items: center; }
}