/* ============================================
   Tower Surge — Game Styles
   ============================================ */

.game-page {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 0 12px;
}

/* ---- HUD ---- */
.hud {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  margin-bottom: 10px;
  width: 100%;
  max-width: 768px;
  backdrop-filter: blur(8px);
}

.hud__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 60px;
}

.hud__label {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hud__value {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 900;
  color: #fff;
  min-width: 2ch;
  text-align: center;
}

.hud__value--credits { color: #facc15; }
.hud__value--hp { color: #ef4444; }
.hud__value--best { color: var(--color-accent-cyan); }

/* ---- Canvas Container ---- */
.canvas-wrap {
  position: relative;
  width: 100%;
  max-width: 768px;
  aspect-ratio: 16 / 10;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  overflow: hidden;
  background: #080c18;
}

.canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: auto;
}

/* ---- Wave Banner ---- */
.wave-banner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-weight: 900;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-shadow: 0 0 30px rgba(6, 214, 160, 0.6), 0 0 60px rgba(6, 214, 160, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  z-index: 20;
}

.wave-banner--show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* ---- Tower Selection Bar ---- */
.tower-bar {
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  padding: 12px 16px;
  margin-top: 10px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  width: 100%;
  max-width: 768px;
  backdrop-filter: blur(8px);
}

.tower-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text);
  cursor: pointer;
  font-family: var(--font-body);
  transition: background 0.15s, border-color 0.15s, transform 0.15s, opacity 0.15s;
  min-width: 80px;
}

.tower-btn:hover:not(.tower-btn--disabled) {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.tower-btn--active {
  border-color: rgba(6, 214, 160, 0.6) !important;
  background: rgba(6, 214, 160, 0.1) !important;
  box-shadow: 0 0 12px rgba(6, 214, 160, 0.15);
}

.tower-btn--disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.tower-btn__icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  flex-shrink: 0;
}

.tower-btn__name {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.tower-btn__cost {
  font-size: 0.7rem;
  color: #facc15;
  font-weight: 600;
}

.tower-btn__key {
  font-size: 0.55rem;
  color: var(--color-text-muted);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  padding: 1px 4px;
}

.wave-btn {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 12px 20px;
  border: 1px solid rgba(6, 214, 160, 0.4);
  border-radius: 10px;
  background: rgba(6, 214, 160, 0.08);
  color: #06d6a0;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
  margin-left: auto;
}

.wave-btn:hover:not(:disabled) {
  background: rgba(6, 214, 160, 0.18);
  border-color: #06d6a0;
  box-shadow: 0 0 16px rgba(6, 214, 160, 0.2);
}

.wave-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ---- Tower Info Panel ---- */
.tower-info {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 10px 16px;
  margin-top: 8px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  width: 100%;
  max-width: 768px;
  backdrop-filter: blur(8px);
  font-size: 0.8rem;
}

.tower-info__name {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
}

.tower-info__stats {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.tower-info__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}

.tower-info__stat-label {
  font-size: 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.tower-info__stat-value {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
}

[hidden] {
  display: none !important;
}

.info-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

.btn-action {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid;
  transition: background 0.15s, box-shadow 0.15s;
}

.btn-action--upgrade {
  border-color: rgba(6, 214, 160, 0.4);
  background: rgba(6, 214, 160, 0.08);
  color: #06d6a0;
}

.btn-action--upgrade:hover:not(:disabled) {
  background: rgba(6, 214, 160, 0.18);
  box-shadow: 0 0 10px rgba(6, 214, 160, 0.2);
}

.btn-action--upgrade:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.btn-action--sell {
  border-color: rgba(239, 68, 68, 0.3);
  background: rgba(239, 68, 68, 0.06);
  color: #ef4444;
}

.btn-action--sell:hover {
  background: rgba(239, 68, 68, 0.15);
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.15);
}

/* ---- Overlays (Title / Game Over) ---- */
.screen {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s;
}

.screen--active {
  opacity: 1;
  pointer-events: auto;
}

.overlay__bg {
  position: absolute;
  inset: 0;
  background: rgba(8, 12, 24, 0.88);
  backdrop-filter: blur(6px);
}

.overlay__content {
  position: relative;
  text-align: center;
  max-width: 480px;
  padding: 40px 32px;
}

.overlay__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 900;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #06d6a0, #38bdf8, #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.overlay__title--fail {
  background: linear-gradient(135deg, #ef4444, #fb923c);
  -webkit-background-clip: text;
  background-clip: text;
}

.overlay__subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
  line-height: 1.6;
}

.btn--primary {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 14px 36px;
  border: 1px solid rgba(6, 214, 160, 0.5);
  border-radius: 12px;
  background: rgba(6, 214, 160, 0.1);
  color: #06d6a0;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.btn--primary:hover {
  background: rgba(6, 214, 160, 0.2);
  border-color: #06d6a0;
  box-shadow: 0 0 24px rgba(6, 214, 160, 0.25);
  transform: translateY(-2px);
}

/* Title screen art */
.title-art {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto 20px;
}

.title-tower {
  position: absolute;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  opacity: 0.85;
}

.title-tower--1 {
  background: linear-gradient(135deg, #06d6a0, #38bdf8);
  box-shadow: 0 0 20px rgba(6, 214, 160, 0.5);
  top: 10px;
  left: 40px;
  animation: towerFloat 3s ease-in-out infinite;
}

.title-tower--2 {
  background: linear-gradient(135deg, #facc15, #fb923c);
  box-shadow: 0 0 20px rgba(250, 204, 21, 0.5);
  top: 50px;
  left: 10px;
  animation: towerFloat 3s ease-in-out -1s infinite;
}

.title-tower--3 {
  background: linear-gradient(135deg, #f472b6, #a855f7);
  box-shadow: 0 0 20px rgba(244, 114, 182, 0.5);
  top: 50px;
  right: 10px;
  animation: towerFloat 3s ease-in-out -2s infinite;
}

.title-shield {
  position: absolute;
  width: 56px;
  height: 56px;
  border: 2px solid rgba(6, 214, 160, 0.3);
  border-radius: 50%;
  top: 32px;
  left: 32px;
  animation: shieldPulse 2.5s ease-in-out infinite;
}

@keyframes towerFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes shieldPulse {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.12); opacity: 0.7; }
}

.title-hints {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 20px;
}

.control-hint {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: 0.06em;
}

/* Game-over stats */
.gameover-stats {
  margin: 20px 0;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.9rem;
}

.stat-row span:first-child { color: var(--color-text-muted); }
.stat-row span:last-child { font-family: var(--font-display); font-weight: 700; color: #fff; }

/* Overlay back link (visible inside overlays) */
.overlay-back-link {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--color-accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.25);
  background: rgba(56, 189, 248, 0.05);
  margin-bottom: 24px;
  transition: background 0.15s, border-color 0.15s;
}

.overlay-back-link:hover {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--color-accent-blue);
}

/* Inline control hints in tower bar */
.control-hints-inline {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-left: 8px;
}

.hint-chip {
  font-size: 0.55rem;
  color: var(--color-text-muted);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* ---- Enemy Codex ---- */
.enemy-codex {
  width: 100%;
  max-width: 768px;
  margin-top: 8px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  backdrop-filter: blur(8px);
}

.enemy-codex__toggle {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 10px 16px;
  list-style: none;
  transition: color 0.15s;
}

.enemy-codex__toggle::-webkit-details-marker { display: none; }

.enemy-codex[open] .enemy-codex__toggle {
  color: var(--color-text);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.enemy-codex__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
  padding: 10px 16px;
}

.codex-entry {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.02);
}

.codex-shape {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.codex-shape--glitch {
  background: #ef4444;
  box-shadow: 0 0 6px rgba(239, 68, 68, 0.5);
  border-radius: 2px;
}

.codex-shape--swarm {
  width: 0; height: 0;
  background: none;
  border-left: 9px solid transparent;
  border-right: 9px solid transparent;
  border-bottom: 16px solid #fb923c;
  box-shadow: none;
  filter: drop-shadow(0 0 4px rgba(251, 146, 60, 0.6));
}

.codex-shape--titan {
  background: #d946ef;
  box-shadow: 0 0 6px rgba(217, 70, 239, 0.5);
  border-radius: 4px;
  transform: rotate(22.5deg);
  width: 20px; height: 20px;
}

.codex-shape--phantom {
  background: #a855f7;
  box-shadow: 0 0 6px rgba(168, 85, 247, 0.5);
  width: 14px; height: 14px;
  transform: rotate(45deg);
  border-radius: 2px;
}

.codex-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.codex-name {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.codex-desc {
  font-size: 0.6rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

/* Title screen tower shapes (match game types) */
.title-tower--2 {
  border-radius: 2px !important;
  transform: rotate(45deg);
  width: 32px !important;
  height: 32px !important;
}

.title-tower--3 {
  border-radius: 50% !important;
}

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .hud { gap: 12px; padding: 8px 10px; }
  .tower-bar { gap: 6px; padding: 8px 10px; }
  .tower-btn { padding: 6px 10px; min-width: 60px; }
  .tower-info { padding: 8px 10px; gap: 10px; }
  .title-hints { flex-direction: column; align-items: center; gap: 8px; }
  .control-hints-inline { display: none; }
  .enemy-codex__grid { grid-template-columns: 1fr; }
}