/* ================================================================
   Weller's Game — style.css
   CSS Architecture per ui_ux_spec.md §5
   Six sections:
     1. Reset & Base
     2. Canvas
     3. HUD Overlay
     4. Shop Overlay
     5. End Screen
     6. Animations
   ================================================================ */

/* ----------------------------------------------------------------
   SECTION 1 — Reset & Base
   ---------------------------------------------------------------- */

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

body {
  margin: 0;
  overflow: hidden;
  background: #000;
  font-family: 'Arial Black', 'Arial Bold', Gadget, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hidden {
  display: none !important;
}

/* ----------------------------------------------------------------
   SECTION 2 — Canvas
   ---------------------------------------------------------------- */

#game-canvas {
  display: block;
  width: 100vw;
  height: 100vh;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
}

/* ----------------------------------------------------------------
   SECTION 3 — HUD Overlay
   ---------------------------------------------------------------- */

#hud {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
}

/* ── Health Bar (Top Left) ── */
#hud-health-container {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.health-heart {
  font-size: 18px;
  color: #FF4136;
  line-height: 1;
  flex-shrink: 0;
}

#hud-health-track {
  width: 200px;
  height: 28px;
  background: rgba(0, 0, 0, 0.45);
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0,0,0,0.5);
  position: relative;
}

#hud-health-bar {
  height: 100%;
  width: 100%;
  background: #2ECC40;
  transition: width 0.1s ease, background-color 0.2s;
}

#hud-health-bar.pulse {
  animation: hud-health-pulse 1.0s infinite;
}

/* HP label overlay on the bar */
#hud-health-label {
  position: absolute;
  left: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'Courier New', Courier, monospace;
  font-size: 11px;
  font-weight: bold;
  color: rgba(255,255,255,0.85);
  letter-spacing: 1px;
  pointer-events: none;
  z-index: 1;
}

/* ── Coin Counter (Top Right) ── */
#hud-coin-container {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.45);
  border: 2px solid rgba(255, 215, 0, 0.5);
  border-radius: 8px;
  padding: 6px 12px 6px 8px;
}

.coin-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #FFD700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: bold;
  color: #8B6914;
  flex-shrink: 0;
}

#hud-coins {
  font-size: 32px;
  font-family: 'Arial Black', sans-serif;
  color: #FFD700;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.8);
  line-height: 1;
  transition: transform 0.1s ease;
  min-width: 2ch;
  text-align: right;
}

/* ── Score / Enemies Defeated (Top Center) ── */
#hud-score {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.40);
  border-radius: 8px;
  padding: 6px 16px;
  font-size: 24px;
  font-family: 'Arial Black', sans-serif;
  color: #FFFFFF;
  text-shadow: 1px 1px 5px rgba(0,0,0,0.9);
  white-space: nowrap;
}

/* ── Weapon Indicator (Bottom Center) ── */
#hud-weapon {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(0, 0, 0, 0.60);
  border: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: 10px;
  padding: 8px 20px 8px 12px;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
  min-width: 160px;
  max-width: 260px;
}

#hud-weapon-icon {
  width: 48px;
  height: 48px;
  border-radius: 6px;
  background: #888888;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: #fff;
  font-family: 'Courier New', monospace;
  font-weight: bold;
  text-align: center;
  flex-shrink: 0;
}

#hud-weapon-name {
  font-size: 20px;
  font-family: 'Arial Black', sans-serif;
  color: #FFFFFF;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ── Minimap (Bottom Right) ── */
#hud-minimap {
  position: absolute;
  bottom: 20px;
  right: 20px;
  width: 150px;
  height: 150px;
  background: rgba(0, 20, 40, 0.75);
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

#minimap-canvas {
  width: 150px;
  height: 150px;
  display: block;
}

/* Controls hint (bottom left, small) */
#hud-controls-hint {
  position: absolute;
  bottom: 20px;
  left: 20px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.6;
  pointer-events: none;
}

/* ----------------------------------------------------------------
   SECTION 4 — Shop Overlay
   ---------------------------------------------------------------- */

#shop-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: shopFadeIn 0.15s ease;
}

#shop-overlay.hidden {
  display: none !important;
}

@keyframes shopFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

#shop-panel {
  width: 480px;
  max-height: 70vh;
  overflow-y: auto;
  background: #1A2332;
  border: 2px solid rgba(255, 215, 0, 0.6);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.8);
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Shop header */
#shop-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  margin-bottom: 12px;
}

#shop-title {
  font-size: 28px;
  font-family: 'Arial Black', sans-serif;
  color: #FFD700;
  letter-spacing: 2px;
}

#shop-close-hint {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  font-family: 'Courier New', monospace;
}

/* Balance row */
#shop-balance-row {
  font-size: 18px;
  font-family: 'Arial Black', sans-serif;
  color: #FFD700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

#shop-balance-row .coin-dot {
  font-size: 20px;
  color: #FFD700;
}

/* Item rows */
.shop-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  border-left: 3px solid transparent;
  cursor: pointer;
  transition: background 0.1s, border-left-color 0.1s;
}

.shop-row.highlighted {
  background: rgba(255, 215, 0, 0.12);
  border-left: 3px solid #FFD700;
}

.shop-icon {
  width: 40px;
  height: 40px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-family: 'Courier New', monospace;
  color: #fff;
  font-weight: bold;
  flex-shrink: 0;
}

.shop-info {
  flex: 1;
  min-width: 0;
}

.shop-item-name {
  font-size: 18px;
  font-family: 'Arial Black', sans-serif;
  color: #FFFFFF;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.shop-item-desc {
  font-size: 11px;
  color: rgba(255,255,255,0.45);
  font-family: 'Courier New', monospace;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.shop-price {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 16px;
  color: #FFD700;
  white-space: nowrap;
  flex-shrink: 0;
}

.shop-coin-icon {
  font-size: 18px;
  color: #FFD700;
}

.shop-buy-btn {
  width: 72px;
  height: 36px;
  background: #2ECC40;
  border-radius: 6px;
  font-size: 14px;
  font-family: 'Arial Black', sans-serif;
  font-weight: bold;
  color: #FFFFFF;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.1s, transform 0.1s;
}

.shop-row.highlighted .shop-buy-btn {
  background: #27AE60;
  transform: scale(1.05);
}

.shop-buy-btn.owned {
  background: transparent;
  color: #2ECC40;
  border: 1px solid #2ECC40;
}

/* Feedback message */
#shop-feedback {
  font-size: 14px;
  font-style: italic;
  font-family: 'Courier New', monospace;
  min-height: 20px;
  margin-top: 8px;
  text-align: center;
}

/* Controls hint row */
#shop-controls-hint {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  font-family: 'Courier New', monospace;
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 8px;
}

/* ----------------------------------------------------------------
   SECTION 5 — End Screen
   ---------------------------------------------------------------- */

#end-screen {
  position: fixed;
  inset: 0;
  background: rgba(10, 15, 25, 0.92);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: 'Arial Black', sans-serif;
  animation: endFadeIn 0.4s ease;
}

#end-screen.hidden {
  display: none !important;
}

@keyframes endFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

#end-headline {
  font-size: 40px;
  color: #FFD700;
  text-shadow: 0 2px 12px rgba(255,215,0,0.4);
  margin-bottom: 8px;
}

#end-subheadline {
  font-size: 24px;
  color: #FFFFFF;
  font-family: Arial, sans-serif;
  margin-bottom: 32px;
}

#end-stats {
  width: 360px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  padding: 20px 32px;
  margin-bottom: 36px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.end-stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.end-stat-label {
  font-size: 18px;
  color: rgba(255,255,255,0.7);
  font-family: Arial, sans-serif;
  font-weight: normal;
}

.end-stat-value {
  font-size: 18px;
  font-weight: bold;
  color: #FFFFFF;
}

#play-again {
  width: 220px;
  height: 56px;
  background: #2ECC40;
  border: none;
  border-radius: 10px;
  font-size: 22px;
  font-family: 'Arial Black', sans-serif;
  color: #FFFFFF;
  cursor: pointer;
  transition: background 0.12s ease, transform 0.12s ease;
  letter-spacing: 1px;
}

#play-again:hover {
  background: #27AE60;
  transform: scale(1.03);
}

#play-again:active {
  background: #1E8C30;
  transform: scale(0.97);
}

/* ── Weapon Switch Flash (Center Screen) ── */
#hud-weapon-flash {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 36px;
  font-family: 'Arial Black', sans-serif;
  color: #FFD700;
  text-shadow: 0 0 20px rgba(255,215,0,0.8), 2px 2px 8px rgba(0,0,0,0.9);
  letter-spacing: 3px;
  text-align: center;
  pointer-events: none;
  animation: weaponFlash 0.8s ease forwards;
  white-space: nowrap;
  z-index: 15;
}

@keyframes weaponFlash {
  0%   { opacity: 0; transform: translate(-50%, -50%) scale(0.7); }
  20%  { opacity: 1; transform: translate(-50%, -50%) scale(1.05); }
  60%  { opacity: 1; transform: translate(-50%, -50%) scale(1.0); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1.0); }
}

/* ── Sword Swing Flash ── */
#hud-sword-flash {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 64px;
  color: #FFFFFF;
  text-shadow: 0 0 30px #FFD700, 0 0 60px #FFD700;
  pointer-events: none;
  animation: swordSwing 0.25s ease forwards;
  z-index: 15;
}

@keyframes swordSwing {
  0%   { opacity: 0; transform: translate(-50%, -50%) rotate(-40deg) scale(0.6); }
  30%  { opacity: 1; transform: translate(-50%, -50%) rotate(20deg)  scale(1.1); }
  100% { opacity: 0; transform: translate(-50%, -50%) rotate(40deg)  scale(1.0); }
}

/* ----------------------------------------------------------------
   SECTION 6 — Animations
   ---------------------------------------------------------------- */

@keyframes hud-health-pulse {
  0%   { box-shadow: 0 0 0px #FF4136; }
  50%  { box-shadow: 0 0 14px #FF4136; }
  100% { box-shadow: 0 0 0px #FF4136; }
}

@keyframes shake {
  0%   { transform: translateX(0); }
  20%  { transform: translateX(-4px); }
  40%  { transform: translateX(4px); }
  60%  { transform: translateX(-4px); }
  80%  { transform: translateX(4px); }
  100% { transform: translateX(0); }
}

.shake {
  animation: shake 0.3s ease;
}