@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;600;700&family=Share+Tech+Mono&display=swap');

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

html {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

body {
  background: #0a0c12;
  background-image:
    radial-gradient(ellipse at 20% 40%, rgba(30,50,80,0.35) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 70%, rgba(60,20,20,0.2) 0%, transparent 60%);
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Rajdhani', sans-serif;
  overscroll-behavior: none;
}

.game-wrapper {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
}

.game-window {
  width: 100%;
  max-width: 900px;
  background: #0f1118;
  border: 1px solid #252a38;
  border-radius: 10px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.04),
    0 24px 64px rgba(0,0,0,0.85),
    0 0 40px rgba(60,100,180,0.08);
}

/* ── Stats bar ── */
.stats-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #080a10;
  border-bottom: 1px solid #1c2030;
  padding: 8px 16px;
  gap: 12px;
}

.stat-group              { display: flex; align-items: center; gap: 18px; }
.stat-group--right       { gap: 8px; }
.stat                    { display: flex; align-items: center; gap: 5px; }
.stat-icon               { font-size: 14px; line-height: 1; }

.stat-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px; color: #4a5568;
  letter-spacing: 0.1em; text-transform: uppercase; line-height: 1;
}

.stat-val {
  font-family: 'Share Tech Mono', monospace;
  font-size: 16px; font-weight: 700; color: #e8d87a;
  min-width: 32px; text-align: right; line-height: 1;
}

.stat-max {
  font-family: 'Share Tech Mono', monospace;
  font-size: 12px; color: #3a4258; line-height: 1;
}

.title-group {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700; font-size: 0.95rem;
  letter-spacing: 0.25em; color: #2e3a52;
  text-transform: uppercase; flex: 1; text-align: center; line-height: 1;
}

/* ── Canvas ── */
.canvas-container { position: relative; line-height: 0; }

canvas {
  display: block;
  width: 100%;
  aspect-ratio: 900 / 460;
  height: auto;
  cursor: crosshair;
  -webkit-user-select: none; user-select: none;
  touch-action: none;
}

/* ── Pause overlay ── */
.pause-overlay {
  display: none;
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(3px);
  align-items: center; justify-content: center;
  z-index: 20;
}

.pause-card {
  background: #10131e;
  border: 1px solid #2a3458;
  border-radius: 10px;
  padding: 40px 56px;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.8), 0 0 0 1px rgba(255,255,255,0.04);
}

.pause-title {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700; font-size: 3rem;
  letter-spacing: 0.3em; color: #8090c0;
  text-transform: uppercase; line-height: 1;
}

.pause-hint {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.82rem; color: #3a4a68;
  letter-spacing: 0.05em; line-height: 1.5;
}

.pause-hint kbd {
  background: #1e2438; border: 1px solid #2e3a58;
  border-radius: 3px; padding: 2px 6px; color: #5a7090;
  font-size: 0.78rem; font-family: 'Share Tech Mono', monospace;
  display: inline-block; line-height: 1.4;
}

.pause-actions { display: flex; gap: 12px; margin-top: 4px; align-items: center; justify-content: center; }

/* ── Tower sidebar ── */
.tower-sidebar {
  position: absolute; top: 0; right: -230px; width: 210px; height: 100%;
  background: rgba(8,11,22,0.97); border-left: 2px solid #1e3264;
  backdrop-filter: blur(8px);
  transition: right 0.22s cubic-bezier(0.25,0.46,0.45,0.94);
  display: flex; flex-direction: column; padding: 14px 16px 12px; gap: 12px;
  z-index: 10; box-shadow: -4px 0 24px rgba(0,0,0,0.5);
}
.tower-sidebar.visible { right: 0; }

.sb-close {
  position: absolute; top: 8px; left: 8px;
  background: none; border: none; color: #2e3a52; font-size: 16px;
  min-width: 38px; min-height: 38px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; border-radius: 4px;
  transition: color 0.15s, background 0.15s;
  font-family: 'Rajdhani', sans-serif; font-weight: 700; line-height: 1;
}
.sb-close:hover { color: #ee6050; background: rgba(200,50,40,0.12); }

.sb-header {
  padding-top: 22px; text-align: center;
  display: flex; flex-direction: column; gap: 5px;
}

.sb-name {
  font-family: 'Rajdhani', sans-serif; font-weight: 700;
  font-size: 1.2rem; color: #d0c880; letter-spacing: 0.04em; line-height: 1.2;
}

.sb-level {
  font-family: 'Share Tech Mono', monospace; font-size: 0.72rem;
  color: #3a5878; text-transform: uppercase; letter-spacing: 0.12em; line-height: 1.2;
}

.sb-divider {
  height: 1px;
  background: linear-gradient(to right, transparent, #1e3060, transparent);
  margin: 0 -4px; flex-shrink: 0;
}

.sb-stats { display: flex; flex-direction: column; gap: 10px; }
.sb-stat  { display: flex; justify-content: space-between; align-items: center; gap: 8px; }

.sb-stat-label {
  font-family: 'Share Tech Mono', monospace; font-size: 0.68rem;
  color: #3a5070; text-transform: uppercase; letter-spacing: 0.1em; line-height: 1; flex-shrink: 0;
}

.sb-stat-val {
  font-family: 'Share Tech Mono', monospace; font-size: 0.88rem;
  font-weight: 700; color: #90c0e0; line-height: 1; text-align: right;
}

.sb-actions { display: flex; flex-direction: column; gap: 8px; margin-top: 2px; }

.sb-hint {
  font-family: 'Share Tech Mono', monospace; font-size: 0.62rem;
  color: #1e2840; text-align: center; margin-top: auto; line-height: 1.4;
}

/* ── HUD ── */
.hud {
  background: #080a10; border-top: 1px solid #1c2030;
  display: flex; align-items: stretch; min-height: 88px;
}

.hud-section {
  padding: 10px 14px; display: flex; flex-direction: column; gap: 7px;
}

.hud-label {
  font-family: 'Share Tech Mono', monospace; font-size: 9px;
  letter-spacing: 0.18em; color: #2e3a52; text-transform: uppercase; line-height: 1;
}

.hud-towers { flex: 1; }
.tower-row  { display: flex; gap: 6px; flex-wrap: wrap; }

.towerBtn {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  background: #12151f; border: 1px solid #1e2438; color: #8090a8;
  border-radius: 5px; padding: 6px 10px; cursor: pointer;
  font-family: 'Rajdhani', sans-serif; font-size: 0.82rem; font-weight: 600;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
  min-width: 78px; min-height: 62px; text-align: center; line-height: 1;
  justify-content: center;
  -webkit-user-select: none; user-select: none;
}
.towerBtn:hover { background: #181c2a; border-color: #2e3a58; color: #b0c0d8; }
.towerBtn.selected {
  background: #101828; border-color: #4a78c8; color: #90c0ff;
  box-shadow: 0 0 12px rgba(74,120,200,0.3), inset 0 0 8px rgba(74,120,200,0.08);
}
.towerBtn:active { transform: scale(0.96); }

.tb-icon { font-size: 16px; line-height: 1.2; display: block; }
.tb-name { font-size: 0.82rem; font-weight: 700; color: inherit; line-height: 1.2; display: block; }
.tb-cost { font-family: 'Share Tech Mono', monospace; font-size: 0.78rem; color: #e8d86a; line-height: 1.2; display: block; }
.tb-tip  { font-size: 0.68rem; color: #3a4a60; font-weight: 400; white-space: nowrap; line-height: 1.2; display: block; }
.towerBtn.selected .tb-tip { color: #3a5880; }

/* ── Buttons ── */
.btn {
  padding: 7px 14px; border-radius: 4px;
  font-family: 'Rajdhani', sans-serif; font-weight: 700;
  font-size: 0.88rem; letter-spacing: 0.04em; cursor: pointer;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
  border: 1px solid transparent; white-space: nowrap;
  line-height: 1.4; display: inline-flex; align-items: center; justify-content: center;
  min-height: 36px;
  -webkit-user-select: none; user-select: none;
}
.btn:active  { transform: scale(0.96); }
.btn:disabled { opacity: 0.38; cursor: default; transform: none; }

.btn--start { background: #163a1e; border-color: #2a7040; color: #70dd88; }
.btn--start:hover:not(:disabled) { background: #1c4826; box-shadow: 0 0 10px rgba(60,180,80,0.25); }

.btn--pause { background: #1a1e30; border-color: #2e3858; color: #8090c0; padding: 6px 11px; font-size: 1rem; }
.btn--pause:hover { background: #222840; border-color: #4050a0; color: #aabce0; }

.btn--restart, .btn--restart-lg { background: #1e1010; border-color: #5a2020; color: #dd7060; }
.btn--restart    { font-size: 1.1rem; padding: 6px 10px; }
.btn--restart-lg { font-size: 1rem;   padding: 9px 22px; }
.btn--restart:hover, .btn--restart-lg:hover { background: #2a1518; }

.btn--resume { background: #143a20; border-color: #2a7840; color: #70ee88; padding: 9px 22px; font-size: 1rem; }
.btn--resume:hover { background: #1a4828; }

.btn--upgrade-sb {
  width: 100%; background: #0e2e18; border-color: #1e5828; color: #70d888;
  font-size: 0.88rem; padding: 11px 10px;
}
.btn--upgrade-sb:hover:not(:disabled) { background: #163820; border-color: #2a7038; }

.btn--sell-sb {
  width: 100%; background: #2a1408; border-color: #5c2e10; color: #d08050;
  font-size: 0.88rem; padding: 10px 10px;
}
.btn--sell-sb:hover { background: #361a0a; }

/* ── Auto label ── */
.auto-label {
  display: flex; align-items: center; gap: 5px;
  font-family: 'Share Tech Mono', monospace; font-size: 0.8rem;
  color: #3a4a60; cursor: pointer; user-select: none; line-height: 1;
  min-height: 36px;
}
.auto-label:hover { color: #5a7090; }

input[type="checkbox"] { accent-color: #4a78c8; width: 16px; height: 16px; cursor: pointer; }

@media (max-width: 480px) {
  .title-group { display: none; }
  .tb-tip      { display: none; }
  .towerBtn    { min-width: 62px; padding: 5px 7px; }
  .stats-bar   { padding: 6px 10px; gap: 6px; }
  .stat-group  { gap: 10px; }
  .stat-group--right { gap: 5px; }
}