@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

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

:root {
  --bg: #0a0a0f;
  --pixel-green: #4ade80;
  --pixel-blue: #38bdf8;
  --pixel-yellow: #facc15;
  --pixel-red: #f87171;
  --pixel-purple: #a78bfa;
  --pixel-orange: #fb923c;
  --dark: #12121a;
  --mid: #1e1e2e;
  --light: #2a2a3e;
  --text: #e2e8f0;
  --text-dim: #64748b;
}

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: var(--bg);
  font-family: 'Press Start 2P', monospace;
}

#game-container {
  position: relative;
  width: 100vw; height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
}

#gameCanvas {
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  border: 2px solid #1e1e2e;
  box-shadow: 0 0 40px rgba(74,222,128,0.15), 0 0 80px rgba(0,0,0,0.8);
}

#ui-overlay {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none;
}

/* ── SCREENS ── */
.screen {
  display: none;
  position: absolute; inset: 0;
  align-items: center; justify-content: center;
  flex-direction: column;
  pointer-events: all;
  animation: fadeIn 0.3s ease;
}
.screen.active { display: flex; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* ── MAIN MENU ── */
#main-menu {
  background: linear-gradient(180deg, #0a0a14 0%, #0d1220 60%, #0a0a14 100%);
  gap: 40px;
}
#main-menu::before {
  content: '';
  position: absolute; inset: 0;
  background-image: 
    radial-gradient(ellipse 600px 300px at 50% 30%, rgba(74,222,128,0.05) 0%, transparent 70%),
    repeating-linear-gradient(0deg, transparent, transparent 31px, rgba(255,255,255,0.015) 31px, rgba(255,255,255,0.015) 32px),
    repeating-linear-gradient(90deg, transparent, transparent 31px, rgba(255,255,255,0.015) 31px, rgba(255,255,255,0.015) 32px);
  pointer-events: none;
}

.menu-logo { text-align: center; z-index: 1; }
.logo-pixel-art { font-size: clamp(24px, 5vw, 48px); letter-spacing: 4px; line-height: 1.2; }
.logo-main { color: var(--text); text-shadow: 3px 3px 0 #1a1a2e; }
.logo-accent { color: var(--pixel-green); text-shadow: 3px 3px 0 #166534, 0 0 20px rgba(74,222,128,0.5); }
.logo-sub { color: var(--text-dim); font-size: 9px; letter-spacing: 3px; margin-top: 12px; }

.menu-buttons { display: flex; flex-direction: column; gap: 14px; z-index: 1; }
.menu-footer { color: var(--text-dim); font-size: 7px; letter-spacing: 1px; z-index: 1; text-align: center; }

/* ── BUTTONS ── */
.btn {
  font-family: 'Press Start 2P', monospace;
  font-size: 11px;
  padding: 14px 28px;
  border: none; cursor: pointer;
  letter-spacing: 1px;
  transition: transform 0.08s, box-shadow 0.08s;
  clip-path: polygon(4px 0%, calc(100% - 4px) 0%, 100% 4px, 100% calc(100% - 4px), calc(100% - 4px) 100%, 4px 100%, 0% calc(100% - 4px), 0% 4px);
  min-width: 220px;
}
.btn:active { transform: translateY(2px); }
.btn-primary {
  background: var(--pixel-green);
  color: #0a1a0a;
  box-shadow: 0 4px 0 #166534, 0 0 20px rgba(74,222,128,0.3);
}
.btn-primary:hover { box-shadow: 0 4px 0 #166534, 0 0 30px rgba(74,222,128,0.5); transform: translateY(-1px); }
.btn-secondary {
  background: var(--light);
  color: var(--text);
  box-shadow: 0 4px 0 #0a0a14;
}
.btn-secondary:hover { background: var(--mid); transform: translateY(-1px); box-shadow: 0 5px 0 #0a0a14; }

/* ── LEVEL SELECT ── */
#level-select { background: rgba(10,10,20,0.95); gap: 30px; }
.screen-title {
  color: var(--pixel-yellow);
  font-size: 18px;
  letter-spacing: 3px;
  text-shadow: 3px 3px 0 #713f12;
}
.level-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.level-card {
  background: var(--dark);
  border: 2px solid var(--light);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.1s;
  clip-path: polygon(4px 0%, calc(100% - 4px) 0%, 100% 4px, 100% calc(100% - 4px), calc(100% - 4px) 100%, 4px 100%, 0% calc(100% - 4px), 0% 4px);
}
.level-card:hover { border-color: var(--pixel-green); transform: translateY(-2px); }
.level-thumb { font-size: 32px; margin-bottom: 10px; }
.level-name { color: var(--text); font-size: 8px; letter-spacing: 1px; margin-bottom: 8px; }
.level-diff { color: var(--pixel-yellow); font-size: 10px; }

/* ── CONTROLS SCREEN ── */
#controls-screen { background: rgba(10,10,20,0.95); gap: 24px; }
.controls-grid { display: flex; flex-direction: column; gap: 12px; }
.control-row { display: flex; align-items: center; gap: 16px; }
.key { 
  background: var(--light); color: var(--pixel-yellow); 
  padding: 6px 12px; font-size: 9px; 
  border: 1px solid var(--text-dim);
  min-width: 160px; text-align: center;
}
.control-desc { color: var(--text); font-size: 9px; }
.powerups-info { margin-top: 10px; }
.powerups-info h3 { color: var(--pixel-purple); font-size: 11px; margin-bottom: 12px; }
.powerup-row { display: flex; gap: 12px; align-items: center; color: var(--text); font-size: 9px; margin-bottom: 8px; }
.pu-icon { font-size: 16px; }

/* ── PAUSE ── */
#pause-menu { background: rgba(0,0,0,0.85); }
.pause-box { display: flex; flex-direction: column; gap: 14px; align-items: center; }

/* ── GAME OVER ── */
#game-over { background: rgba(10,0,0,0.92); }
.gameover-box { display: flex; flex-direction: column; gap: 20px; align-items: center; }
.gameover-title { color: var(--pixel-red); font-size: 36px; text-shadow: 4px 4px 0 #7f1d1d; animation: shake 0.4s ease; }
.gameover-score { color: var(--text); font-size: 12px; }

/* ── LEVEL COMPLETE ── */
#level-complete { background: rgba(0,10,5,0.92); }
.levelcomplete-box { display: flex; flex-direction: column; gap: 20px; align-items: center; }
.lc-title { color: var(--pixel-green); font-size: 28px; text-shadow: 3px 3px 0 #166534; }
.lc-score { color: var(--pixel-yellow); font-size: 12px; }

/* ── VICTORY ── */
#victory-screen { background: radial-gradient(ellipse at center, #0d1a1f 0%, #050810 100%); }
.victory-box { display: flex; flex-direction: column; gap: 16px; align-items: center; }
.victory-stars { color: var(--pixel-yellow); font-size: 28px; animation: pulse 1.5s infinite; letter-spacing: 10px; }
.victory-title { color: var(--pixel-yellow); font-size: 42px; text-shadow: 4px 4px 0 #713f12, 0 0 30px rgba(250,204,21,0.4); }
.victory-sub { color: var(--pixel-blue); font-size: 9px; letter-spacing: 2px; }
.victory-score { color: var(--text); font-size: 12px; }

/* ── HUD ── */
#hud {
  position: absolute; top: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(0,0,0,0.7) 0%, transparent 100%);
  z-index: 10;
}
#hud.hidden { display: none; }
.hud-left, .hud-right { display: flex; flex-direction: column; gap: 4px; }
.hud-item { color: #fff; font-size: 9px; letter-spacing: 1px; text-shadow: 1px 1px 0 #000; }
#lives-count { color: var(--pixel-red); }
#health-bar { color: var(--pixel-red); letter-spacing: 2px; }
.hud-center { text-align: center; }
.hud-level { color: var(--pixel-yellow); font-size: 8px; letter-spacing: 2px; text-shadow: 1px 1px 0 #000; }
#coin-count { color: var(--pixel-yellow); }
#score-count { color: var(--pixel-green); }
.hud-powerups { 
  position: absolute; top: 50px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; 
}
.hud-pu { 
  width: 28px; height: 28px; font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.5); border: 1px solid rgba(255,255,255,0.2);
  border-radius: 2px;
}

/* ── BOSS HUD ── */
#boss-hud {
  position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
  text-align: center; pointer-events: none;
  min-width: 300px;
}
#boss-hud.hidden { display: none; }
.boss-name { color: var(--pixel-red); font-size: 9px; letter-spacing: 2px; margin-bottom: 6px; text-shadow: 1px 1px 0 #000; }
.boss-bar-wrap { height: 12px; background: #333; border: 2px solid #666; }
.boss-bar { height: 100%; background: linear-gradient(90deg, #dc2626, #f87171); transition: width 0.3s; width: 100%; }

/* ── ANIMATIONS ── */
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.7; transform: scale(1.05); } }
@keyframes shake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

.hidden { display: none !important; }