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

:root {
  --cyan: #00d4ff;
  --cyan-dim: rgba(0, 212, 255, 0.3);
  --panel: rgba(6, 14, 28, 0.82);
  --panel-edge: rgba(0, 212, 255, 0.35);
}

html, body {
  height: 100%;
  background: #05070f;
  color: #fff;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  overflow: hidden;
  user-select: none;
}

.hidden { display: none !important; }

#game-container { position: relative; width: 100vw; height: 100vh; }

#gameCanvas { display: block; background: #0a0f1e; cursor: crosshair; }

#ui-overlay {
  position: absolute; inset: 0;
  pointer-events: none;
}

/* ---------- Top bar ---------- */
#top-bar {
  position: absolute; top: 0; left: 0; right: 0; height: 52px;
  background: linear-gradient(to bottom, rgba(0,0,0,0.92), rgba(0,0,0,0.45));
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 18px; gap: 16px;
  border-bottom: 2px solid var(--cyan);
  pointer-events: auto;
}
#resources, #wave-info { display: flex; gap: 12px; font-size: 15px; align-items: center; }
#resources span, #wave-info span {
  background: rgba(0, 212, 255, 0.08);
  padding: 5px 13px; border-radius: 5px;
  border: 1px solid var(--cyan-dim);
  white-space: nowrap;
}
#minerals { color: #9be7ff; font-weight: 600; }
#phase.phase-day { color: #ffd166; border-color: rgba(255,209,102,.4); background: rgba(255,209,102,.08); }
#phase.phase-night { color: #ff6b9d; border-color: rgba(255,107,157,.4); background: rgba(255,107,157,.08); }

#core-status { display: flex; align-items: center; gap: 8px; }
.core-label { font-size: 12px; letter-spacing: 2px; color: var(--cyan); }
.core-bar {
  width: 160px; height: 14px; border: 1px solid var(--cyan-dim);
  border-radius: 7px; overflow: hidden; background: rgba(0,0,0,.5);
}
#core-bar-fill {
  height: 100%; width: 100%;
  background: linear-gradient(90deg, #00d4ff, #06d6a0);
  transition: width .2s linear;
}

/* ---------- Roster ---------- */
#roster {
  position: absolute; top: 62px; left: 12px;
  display: flex; flex-direction: column; gap: 5px;
  pointer-events: none;
}
.roster-row {
  display: flex; align-items: center; gap: 8px;
  background: var(--panel); border: 1px solid var(--panel-edge);
  border-radius: 6px; padding: 4px 9px; font-size: 13px; min-width: 150px;
}
.roster-row .dot { width: 11px; height: 11px; border-radius: 50%; flex: 0 0 auto; }
.roster-row .rname { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.roster-row.dead { opacity: .5; }
.roster-row .hpbar { width: 46px; height: 6px; background: rgba(255,255,255,.15); border-radius: 3px; overflow: hidden; }
.roster-row .hpbar > i { display: block; height: 100%; background: #06d6a0; }

/* ---------- Minimap ---------- */
#minimap {
  position: absolute; top: 62px; right: 12px;
  border: 1px solid var(--panel-edge); border-radius: 6px;
  background: rgba(2, 6, 14, 0.85);
  pointer-events: none;
}

/* ---------- Bottom bar ---------- */
#bottom-bar {
  position: absolute; bottom: 0; left: 0; right: 0; min-height: 96px;
  background: linear-gradient(to top, rgba(0,0,0,0.92), rgba(0,0,0,0.4));
  display: flex; gap: 16px; padding: 10px 18px;
  border-top: 2px solid var(--cyan);
  pointer-events: auto;
}
#build-menu { flex: 1; }
#build-menu h3, #help h3 {
  color: var(--cyan); font-size: 12px; text-transform: uppercase;
  letter-spacing: 1px; margin-bottom: 8px;
}
#build-menu .hint { color: #6f8aa3; text-transform: none; letter-spacing: 0; font-weight: 400; }
.build-row { display: flex; gap: 8px; flex-wrap: wrap; }
.build-btn {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  width: 84px; padding: 7px 5px;
  background: linear-gradient(135deg, #112141, #0f3460);
  color: #fff; border: 1px solid var(--cyan); border-radius: 8px;
  cursor: pointer; transition: transform .12s, box-shadow .12s, background .12s;
}
.build-btn .icon { font-size: 22px; }
.build-btn .bname { font-size: 12px; }
.build-btn .cost { font-size: 11px; color: #9be7ff; }
.build-btn .cost::before { content: '💎 '; }
.build-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0,212,255,.35); }
.build-btn.selected { background: linear-gradient(135deg, #00d4ff, #0099cc); color: #022; box-shadow: 0 0 16px rgba(0,212,255,.6); }
.build-btn.selected .cost { color: #022; }
.build-btn.unaffordable { opacity: .45; cursor: not-allowed; }

#help { width: 280px; }
.help-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 14px; font-size: 12px; color: #b9c6d6; }
.help-grid b { color: var(--cyan); }

/* ---------- Lobby & game over ---------- */
#start-screen, #game-over-screen {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(10,18,40,.92), rgba(2,4,10,.97));
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  pointer-events: auto; z-index: 100; text-align: center; padding: 20px;
}
#start-screen h1, #game-over-screen h1 {
  font-size: clamp(40px, 8vw, 76px); color: var(--cyan);
  text-shadow: 0 0 28px rgba(0,212,255,.55); margin-bottom: 14px; letter-spacing: 2px;
}
#game-over-screen h1 { color: #ff6b9d; text-shadow: 0 0 28px rgba(255,107,157,.55); }
#game-over-screen.victory { background: radial-gradient(ellipse at center, rgba(6,40,30,.92), rgba(2,10,8,.97)); }
#game-over-screen.victory h1 { color: #06d6a0; text-shadow: 0 0 30px rgba(6,214,160,.6); }
.tagline { font-size: clamp(15px, 2.4vw, 21px); color: #cfe; margin-bottom: 30px; max-width: 640px; }
.join-box { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
#name-input {
  padding: 14px 18px; font-size: 18px; border-radius: 10px;
  border: 1px solid var(--cyan); background: rgba(0,0,0,.5); color: #fff; outline: none; min-width: 220px;
}
#name-input:focus { box-shadow: 0 0 14px rgba(0,212,255,.5); }
#start-btn {
  padding: 14px 44px; font-size: 20px; font-weight: 700;
  background: linear-gradient(135deg, #00d4ff, #0099cc); color: #021;
  border: none; border-radius: 10px; cursor: pointer; transition: transform .2s, box-shadow .2s;
}
#start-btn:hover { transform: scale(1.06); box-shadow: 0 0 26px rgba(0,212,255,.55); }
#start-btn:disabled { opacity: .5; cursor: progress; transform: none; }
.conn { margin-top: 18px; font-size: 14px; color: #8aa; }
.conn.ok { color: #06d6a0; }
.conn.err { color: #ff6b9d; }
.credits { margin-top: 28px; font-size: 12px; color: #56708a; }
#game-over-screen p { font-size: 22px; margin: 6px 0; color: #cdd; }
.respawn-note { font-size: 15px !important; color: #8aa !important; margin-top: 18px !important; }