/* Gritty Military / Dieselpunk Style (No purple / neon / AI tropes) */
:root {
  --bg-dark: #121410;
  --panel-bg: rgba(28, 32, 24, 0.94);
  --panel-border: #4e5745;
  --accent-gold: #c29b38;
  --accent-green: #5c6b47;
  --accent-red: #ba3828;
  --text-primary: #d6ded0;
  --text-muted: #8d9884;
  --font-mono: "Courier New", "Lucida Console", monospace;
  --font-hud: "Trebuchet MS", "Lucida Console", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body, html {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-mono);
}

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

/* Retro Tactical Status Bar (Doom / Duke Nukem Style Bottom HUD) */
#hud {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 62px;
  background: linear-gradient(180deg, #23271e 0%, #171a13 50%, #10120d 100%);
  border-top: 3px solid #4a5441;
  box-shadow: 0 -4px 18px rgba(0, 0, 0, 0.75), inset 0 1px 0 rgba(140, 160, 120, 0.2);
  display: flex;
  align-items: stretch;
  justify-content: flex-start;
  pointer-events: none;
  z-index: 10;
  padding: 4px 12px;
  gap: 8px;
}

.hud-block {
  background: #191c15;
  border: 2px solid #333a2d;
  box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.8), 0 1px 0 rgba(255, 255, 255, 0.05);
  padding: 4px 14px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-width: 90px;
}

.hud-armor {
  min-width: 130px;
  border-left: 4px solid var(--accent-green);
}

.hud-label {
  font-size: 9px;
  color: #c29b38;
  letter-spacing: 1.5px;
  font-weight: bold;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.hud-value {
  font-size: 17px;
  font-weight: bold;
  color: #ffffff;
  font-family: var(--font-hud);
  letter-spacing: 1px;
}

.hud-lives {
  color: #ff4d36;
  letter-spacing: 4px;
  font-size: 18px;
  text-shadow: 0 0 8px rgba(255, 77, 54, 0.4);
}

.hud-ammo {
  color: #ff9d3b;
  text-shadow: 0 0 6px rgba(255, 157, 59, 0.35);
}

.hud-airstrike {
  color: #6d7568;
  font-size: 14px;
}

.hud-hostiles {
  color: #e35442;
  font-size: 15px;
}

.hud-controls {
  flex: 1;
  align-items: flex-start;
  min-width: 240px;
  padding-left: 16px;
  border-right: 4px solid var(--panel-border);
}

.hud-comm-text {
  font-size: 11px;
  color: #a6b39d;
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 2px;
}

.hud-comm-text strong {
  color: #e2ebdb;
}

.hud-cheat {
  color: #798373;
  font-size: 10px;
  font-weight: bold;
}


/* Modals & Screens */
.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 12, 9, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(3px);
  transition: opacity 0.2s ease;
}

.modal-overlay.hidden {
  display: none;
}

.modal-box {
  background: #20241b;
  border: 2px solid var(--panel-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.85), inset 0 0 16px rgba(0, 0, 0, 0.5);
  padding: 28px 36px;
  max-width: 540px;
  width: 90%;
  text-align: center;
  border-radius: 3px;
}

.modal-box h1 {
  font-size: 26px;
  letter-spacing: 2px;
  color: var(--accent-gold);
  margin-bottom: 8px;
  text-transform: uppercase;
  border-bottom: 1px solid #3c4434;
  padding-bottom: 10px;
}

.modal-box h2 {
  font-size: 20px;
  color: #fff;
  margin-bottom: 12px;
}

.modal-box p {
  font-size: 13px;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.briefing-card {
  text-align: left;
  background: #171a13;
  border: 1px solid #32382c;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 12px;
  color: #adb8a5;
  line-height: 1.6;
}

.briefing-card ul {
  padding-left: 20px;
  margin-top: 6px;
}

.btn-military {
  background: var(--accent-green);
  color: #f0f4ec;
  border: 1px solid #7c8e63;
  padding: 10px 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: bold;
  letter-spacing: 1.5px;
  cursor: pointer;
  text-transform: uppercase;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
  transition: all 0.15s ease;
}

.btn-military:hover {
  background: #6e8055;
  color: #ffffff;
  border-color: #a4ba83;
}

.btn-military:active {
  transform: translateY(1px);
}

/* Campaign Victory Showcase (Ending Screen) */
.campaign-showcase-box {
  max-width: 640px;
  padding: 24px 28px;
}

.tank-showcase-frame {
  margin: 14px 0 16px 0;
  background: #11140e;
  border: 2px solid #5a6b49;
  box-shadow: inset 0 0 16px rgba(0, 0, 0, 0.9), 0 0 12px rgba(90, 107, 73, 0.3);
  padding: 8px;
  border-radius: 2px;
}

#tankShowcaseCanvas {
  display: block;
  margin: 0 auto;
  background: radial-gradient(circle at 50% 50%, #20261a 0%, #0d100a 100%);
  border: 1px solid #36402e;
}

.tank-spec-label {
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: 2px;
  color: #ffca28;
  font-weight: bold;
}

.campaign-story-card {
  background: #171a13;
  border: 1px solid #3c4535;
  border-left: 4px solid #ffca28;
  padding: 14px 18px;
  text-align: left;
  margin-bottom: 16px;
  font-size: 13px;
  color: #dce6d5;
  line-height: 1.6;
}

.campaign-stats-row {
  display: flex;
  justify-content: space-around;
  margin-bottom: 20px;
  font-size: 11px;
  color: #9bac8f;
  background: #12150f;
  padding: 8px;
  border: 1px dashed #3a4433;
}

.campaign-stats-row strong {
  color: #8ec766;
}