/* ============================================================
   VOID BREACH — Main Stylesheet
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Rajdhani:wght@300;400;600&display=swap');

:root {
  --col-bg:        #000008;
  --col-primary:   #00e5ff;
  --col-accent:    #ff2d78;
  --col-warn:      #ffb800;
  --col-green:     #00ff88;
  --col-purple:    #bf00ff;
  --col-panel:     rgba(0, 20, 40, 0.85);
  --col-border:    rgba(0, 229, 255, 0.3);
  --font-hud:      'Orbitron', monospace;
  --font-body:     'Rajdhani', sans-serif;
  --glow-cyan:     0 0 8px #00e5ff, 0 0 20px rgba(0,229,255,0.4);
  --glow-red:      0 0 8px #ff2d78, 0 0 20px rgba(255,45,120,0.4);
  --glow-green:    0 0 8px #00ff88, 0 0 20px rgba(0,255,136,0.4);
}

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

html, body {
  width: 100%; height: 100%;
  background: var(--col-bg);
  color: #e0f4ff;
  font-family: var(--font-body);
  overflow: hidden;
  user-select: none;
}

/* ── Canvas ──────────────────────────────────────────────── */
#gameCanvas {
  display: block;
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  cursor: crosshair;
}

/* ── Scanline overlay ────────────────────────────────────── */
#scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.07) 2px,
    rgba(0,0,0,0.07) 4px
  );
}

/* ── HUD ─────────────────────────────────────────────────── */
#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10;
  font-family: var(--font-hud);
}

/* Top-left: health/shields */
#hud-left {
  position: absolute;
  top: 18px; left: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 220px;
}

.bar-label {
  font-size: 9px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--col-primary);
  margin-bottom: 2px;
  opacity: 0.7;
}

.bar-track {
  width: 200px;
  height: 10px;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--col-border);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 0.15s ease;
  position: relative;
}

.bar-fill::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 40%;
  background: rgba(255,255,255,0.2);
  border-radius: 2px 2px 0 0;
}

#health-fill  { background: linear-gradient(90deg, #ff2d78, #ff6b6b); box-shadow: var(--glow-red); }
#shield-fill  { background: linear-gradient(90deg, #0077ff, #00e5ff); box-shadow: var(--glow-cyan); }
#energy-fill  { background: linear-gradient(90deg, #ffb800, #ffe066); box-shadow: 0 0 8px #ffb800; }

.bar-value {
  font-size: 9px;
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255,255,255,0.8);
}

/* Top-right: score / wave */
#hud-right {
  position: absolute;
  top: 18px; right: 18px;
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#score-display {
  font-size: 28px;
  font-weight: 900;
  color: var(--col-primary);
  text-shadow: var(--glow-cyan);
  letter-spacing: 2px;
}

#wave-display {
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--col-warn);
  text-shadow: 0 0 8px var(--col-warn);
  text-transform: uppercase;
}

#lives-display {
  font-size: 16px;
  color: var(--col-accent);
  letter-spacing: 4px;
}

/* Bottom-center: weapon selector */
#hud-bottom {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  align-items: center;
}

.weapon-slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  border: 1px solid var(--col-border);
  border-radius: 4px;
  background: var(--col-panel);
  transition: all 0.15s;
  min-width: 80px;
}

.weapon-slot.active {
  border-color: var(--col-primary);
  box-shadow: var(--glow-cyan);
  background: rgba(0, 229, 255, 0.08);
}

.weapon-slot .w-name { font-size: 8px; letter-spacing: 2px; color: #aaa; text-transform: uppercase; }
.weapon-slot .w-key  { font-size: 18px; font-weight: 700; color: var(--col-primary); }
.weapon-slot .w-label{ font-size: 7px; letter-spacing: 1px; color: #666; }
.weapon-slot.active .w-name { color: var(--col-primary); }

/* Top-center: wave announcement */
#wave-announce {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s;
}

#wave-announce.show { opacity: 1; }

#wave-announce .wa-wave {
  font-size: 11px;
  letter-spacing: 8px;
  color: var(--col-warn);
  text-transform: uppercase;
}

#wave-announce .wa-num {
  font-size: 72px;
  font-weight: 900;
  color: white;
  text-shadow: var(--glow-cyan);
  line-height: 1;
}

#wave-announce .wa-sub {
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--col-primary);
  text-transform: uppercase;
}

/* Kill feed */
#killfeed {
  position: absolute;
  top: 80px;
  right: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-end;
}

.killfeed-entry {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--col-warn);
  text-transform: uppercase;
  animation: kfSlide 2.5s forwards;
}

@keyframes kfSlide {
  0%   { opacity: 0; transform: translateX(20px); }
  15%  { opacity: 1; transform: translateX(0); }
  70%  { opacity: 1; }
  100% { opacity: 0; }
}

/* Damage flash */
#damage-flash {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(255,0,60,0.6) 100%);
  opacity: 0;
  transition: opacity 0.05s;
}

#damage-flash.flash { opacity: 1; }

/* Powerup notification */
#powerup-notify {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 13px;
  letter-spacing: 4px;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.3s;
  text-align: center;
  text-shadow: var(--glow-cyan);
  color: var(--col-green);
}

#powerup-notify.show { opacity: 1; }

/* ── Screens ─────────────────────────────────────────────── */
.screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 50;
  background: radial-gradient(ellipse at center, rgba(0,10,30,0.97) 0%, #000005 100%);
  font-family: var(--font-hud);
  display: none;
}

.screen.active { display: flex; }

/* ── Title Screen ────────────────────────────────────────── */
#screen-title .logo {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 900;
  letter-spacing: 12px;
  background: linear-gradient(135deg, #00e5ff 0%, #bf00ff 50%, #ff2d78 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  animation: logoPulse 3s ease-in-out infinite;
  margin-bottom: 8px;
}

@keyframes logoPulse {
  0%, 100% { filter: drop-shadow(0 0 20px rgba(0,229,255,0.5)); }
  50%       { filter: drop-shadow(0 0 40px rgba(191,0,255,0.7)); }
}

#screen-title .tagline {
  font-size: 12px;
  letter-spacing: 8px;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  margin-bottom: 60px;
}

.btn-primary {
  background: transparent;
  border: 1px solid var(--col-primary);
  color: var(--col-primary);
  font-family: var(--font-hud);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 6px;
  text-transform: uppercase;
  padding: 14px 40px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.2s;
  pointer-events: all;
  margin: 6px;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--col-primary);
  transform: translateX(-100%);
  transition: transform 0.2s;
  z-index: -1;
}

.btn-primary:hover {
  color: #000;
  box-shadow: var(--glow-cyan);
}

.btn-primary:hover::before { transform: translateX(0); }

.btn-secondary {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.5);
  font-family: var(--font-hud);
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  padding: 10px 30px;
  cursor: pointer;
  transition: all 0.2s;
  pointer-events: all;
  margin: 6px;
}

.btn-secondary:hover { border-color: var(--col-primary); color: var(--col-primary); }

/* Controls list */
.controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 40px;
  margin: 30px 0;
  text-align: left;
}

.ctrl-row { display: flex; gap: 14px; align-items: center; }
.ctrl-key {
  font-family: var(--font-hud);
  font-size: 10px;
  padding: 4px 8px;
  border: 1px solid var(--col-border);
  color: var(--col-primary);
  min-width: 50px;
  text-align: center;
  letter-spacing: 1px;
}
.ctrl-desc { font-size: 12px; letter-spacing: 2px; color: rgba(255,255,255,0.5); }

/* ── Pause Screen ────────────────────────────────────────── */
#screen-pause .pause-title {
  font-size: 48px;
  font-weight: 900;
  letter-spacing: 12px;
  color: var(--col-primary);
  text-shadow: var(--glow-cyan);
  margin-bottom: 40px;
}

/* ── Game Over ───────────────────────────────────────────── */
#screen-gameover .go-title {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 900;
  letter-spacing: 8px;
  color: var(--col-accent);
  text-shadow: var(--glow-red);
  margin-bottom: 20px;
}

#screen-gameover .go-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 50px;
  margin: 30px 0;
  text-align: center;
}

.go-stat-item .stat-label {
  font-size: 9px;
  letter-spacing: 4px;
  color: rgba(255,255,255,0.3);
  text-transform: uppercase;
}

.go-stat-item .stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--col-primary);
}

/* ── Victory ─────────────────────────────────────────────── */
#screen-victory .v-title {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 900;
  letter-spacing: 8px;
  color: var(--col-green);
  text-shadow: var(--glow-green);
  margin-bottom: 20px;
}

/* ── Upgrade Screen ──────────────────────────────────────── */
#screen-upgrade {
  overflow-y: auto;
}

#screen-upgrade .up-title {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: 8px;
  color: var(--col-warn);
  margin-bottom: 6px;
}

#screen-upgrade .up-credits {
  font-size: 13px;
  letter-spacing: 4px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 30px;
}

.upgrade-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  max-width: 800px;
  width: 90%;
  margin-bottom: 30px;
}

.upgrade-card {
  border: 1px solid var(--col-border);
  background: var(--col-panel);
  padding: 16px;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  pointer-events: all;
}

.upgrade-card:hover:not(.maxed):not(.cant-afford) {
  border-color: var(--col-warn);
  box-shadow: 0 0 12px rgba(255,184,0,0.3);
}

.upgrade-card.maxed { opacity: 0.4; cursor: default; }
.upgrade-card.cant-afford { opacity: 0.5; }

.uc-icon  { font-size: 24px; margin-bottom: 6px; }
.uc-name  { font-size: 12px; font-weight: 700; letter-spacing: 2px; color: var(--col-primary); text-transform: uppercase; }
.uc-desc  { font-size: 11px; color: rgba(255,255,255,0.5); margin: 4px 0 8px; font-family: var(--font-body); }
.uc-cost  { font-size: 11px; color: var(--col-warn); letter-spacing: 2px; }
.uc-level { position: absolute; top: 8px; right: 10px; font-size: 9px; color: rgba(255,255,255,0.3); }
.uc-level span { color: var(--col-green); }

/* ── Misc utilities ──────────────────────────────────────── */
.separator {
  width: 300px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--col-primary), transparent);
  margin: 20px 0;
  opacity: 0.4;
}

.screen-subtitle {
  font-size: 10px;
  letter-spacing: 6px;
  color: rgba(255,255,255,0.25);
  text-transform: uppercase;
  margin-bottom: 40px;
}