:root {
  color-scheme: dark;
  --bg: #07111e;
  --panel: rgba(6, 19, 37, 0.84);
  --panel-strong: rgba(7, 16, 30, 0.92);
  --accent: #ff5c39;
  --accent-2: #ffb238;
  --line: rgba(145, 198, 255, 0.2);
  --text: #eff6ff;
  --muted: #9ab2ca;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --font: "Trebuchet MS", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(44, 88, 146, 0.35), transparent 35%),
    linear-gradient(180deg, #08111e 0%, #040812 100%);
  touch-action: none;
  overflow: hidden;
  position: fixed;
  width: 100%;
  height: 100%;
}

.app-shell {
  position: relative;
  min-height: 100vh;
  min-height: -webkit-fill-available;
  display: grid;
  place-items: center;
  overflow: hidden;
  touch-action: none;
}

#gameCanvas {
  width: 100vw;
  height: 100vh;
  display: block;
  background: #09121c;
}

.menu-panel,
.message-panel {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(2, 7, 14, 0.68);
  backdrop-filter: blur(10px);
  z-index: 20;
}

.menu-card,
.message-card {
  width: min(92vw, 460px);
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(17, 34, 60, 0.92), rgba(6, 15, 29, 0.95));
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 8px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-size: 0.72rem;
}

h1,
h2,
.menu-copy,
.controls-hint,
.field span,
.hud,
button,
select {
  margin: 0;
}

h1,
h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
}

.menu-copy,
#messageText {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.5;
}

.field {
  display: grid;
  gap: 8px;
  margin-top: 22px;
}

.field span {
  font-size: 0.92rem;
  color: #d7e7f9;
}

select,
button {
  font: inherit;
}

select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(8, 20, 38, 0.95);
}

.primary-button,
.missile-button {
  border: 0;
  border-radius: 999px;
  color: white;
  cursor: pointer;
  transition: transform 120ms ease, filter 120ms ease;
}

.primary-button:hover,
.missile-button:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.primary-button {
  width: 100%;
  margin-top: 18px;
  padding: 16px 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.controls-hint {
  display: grid;
  gap: 8px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.92rem;
}

.hud {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  pointer-events: none;
}

.hud-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}

.touch-controls {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 24px;
  z-index: 11;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.joystick-panel,
.missile-button,
.spacer {
  width: 100px;
}

.joystick-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.turbo-bar-container {
  width: 140px;
  height: 6px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 0 15px rgba(57, 213, 255, 0.2);
}

.turbo-bar-fill {
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #2b78d2, #39d5ff);
  box-shadow: 0 0 10px #39d5ff;
  transition: width 0.05s linear;
}

.joystick-label {
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.joystick-base,
.missile-button {
  padding: 14px 18px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.joystick-base {
  position: relative;
  width: 126px;
  height: 126px;
  padding: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, rgba(88, 139, 198, 0.2), rgba(7, 16, 30, 0.94) 68%),
    linear-gradient(180deg, rgba(23, 42, 70, 0.95), rgba(7, 16, 30, 0.98));
  box-shadow: inset 0 0 0 1px rgba(154, 192, 232, 0.12), var(--shadow);
  touch-action: none;
}

.joystick-base::before,
.joystick-base::after {
  content: "";
  position: absolute;
  inset: 50%;
  background: rgba(168, 207, 255, 0.12);
  transform: translate(-50%, -50%);
}

.joystick-base::before {
  width: 74%;
  height: 1px;
}

.joystick-base::after {
  width: 1px;
  height: 74%;
}

.joystick-knob {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 30%, #f4fbff, #8ab8df 38%, #26496c 76%, #10243d 100%);
  box-shadow:
    0 10px 18px rgba(0, 0, 0, 0.32),
    inset 0 2px 5px rgba(255, 255, 255, 0.32);
  transform: translate(-50%, -50%);
}

.missile-button {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  font-weight: 700;
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  text-transform: uppercase;
  background: linear-gradient(135deg, #9f1f14, #f35a2f);
}

.hidden {
  display: none;
}

@media (max-width: 760px) {
  .hud {
    padding: 0 8px;
    top: 10px;
  }

  .hud-group {
    padding: 8px 12px;
    font-size: 0.85rem;
  }

  .joystick-base {
    width: 100px;
    height: 100px;
  }
  
  .joystick-knob {
    width: 42px;
    height: 42px;
  }

  .missile-button {
    width: 72px;
    height: 72px;
    font-size: 0.75rem;
  }

  .turbo-bar-container {
    width: 112px;
  }
}