/**
 * ============================================================
 *  Road Rush Racer – css/style.css
 *  UI Redesign: "Turbo Carbon" Aesthetic
 * ============================================================
 */

@import url('https://fonts.googleapis.com/css2?family=Exo+2:ital,wght@0,700;0,900;1,700&family=Inter:wght@400;600;800&display=swap');

:root {
  /* ── Pro Racing Palette ── */
  --c-accent: #00f2fe;
  /* Nitrous Blue */
  --c-accent-glow: rgba(0, 242, 254, 0.5);
  --c-accent-dark: #0088cc;

  --c-bg: #0a0a0c;
  /* Carbon Black */
  --c-bg-card: rgba(22, 22, 26, 0.85);
  --c-bg-glass: rgba(255, 255, 255, 0.05);

  --c-text: #ffffff;
  --c-text-dim: #a0a0aa;

  --c-gold: #ffcc00;
  /* Trophy Gold */
  --c-danger: #ff3344;
  /* Redline */
  --c-success: #00ff88;
  /* Green Light */

  /* ── Typography ── */
  --font-head: 'Exo 2', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* ── Effects ── */
  --glow-accent: 0 0 15px var(--c-accent-glow);
  --shadow-flat: 0 4px 0 rgba(0, 0, 0, 0.3);
  --glass-blur: blur(12px);
  --skew-val: skewX(-10deg);
}

/* ── Reset ── */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
  user-select: none;
  touch-action: none;
}

/* ── Layout ── */
#game-wrapper {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

#game-canvas {
  display: block;
  image-rendering: crisp-edges;
  pointer-events: none;
  position: relative;
  z-index: 1;
}

/* ── Utility: Slanted Headers ── */
.slant {
  transform: var(--skew-val);
  display: inline-block;
}

/* ── Buttons (Pro Racing Style) ── */
.btn {
  position: relative;
  padding: 12px 24px;
  font-family: var(--font-head);
  font-weight: 900;
  font-style: italic;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transform: var(--skew-val);
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  overflow: hidden;
  box-shadow: var(--shadow-flat);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  transform: var(--skew-val) translateY(-2px) scale(1.05);
  filter: brightness(1.1);
}

.btn:active {
  transform: var(--skew-val) translateY(1px);
}

.btn-primary {
  background: var(--c-accent);
  color: #000;
  box-shadow: 0 0 20px var(--c-accent-glow);
}

.btn-secondary {
  background: #2a2a30;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-gold {
  background: var(--c-gold);
  color: #000;
}

.btn-danger {
  background: var(--c-danger);
  color: #fff;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  outline: none;
}

/* ── Loading Screen ── */
#loading-screen {
  position: absolute;
  inset: 0;
  z-index: 1000;
  background: var(--c-bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: opacity 0.6s ease;
}

#loading-screen.hidden {
  opacity: 0;
  pointer-events: none;
}

#loading-logo {
  font-family: var(--font-head);
  font-size: 48px;
  font-weight: 900;
  font-style: italic;
  letter-spacing: -2px;
  line-height: 0.9;
  text-align: center;
  margin-bottom: 40px;
  transform: var(--skew-val);
}

#loading-logo span {
  color: var(--c-accent);
  text-shadow: var(--glow-accent);
}

#loading-bar-wrap {
  width: 240px;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

#loading-bar {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0%;
  background: var(--c-accent);
  box-shadow: var(--glow-accent);
  transition: width 0.1s linear;
}

#loading-text {
  margin-top: 15px;
  font-family: var(--font-head);
  font-size: 14px;
  color: var(--c-text-dim);
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* ── HUD Elements ── */
#fps-counter {
  position: absolute;
  top: 10px;
  right: 10px;
  font-family: monospace;
  font-size: 12px;
  color: var(--c-success);
  display: none;
  z-index: 10;
}

#fps-counter.active {
  display: block;
}

#achievement-toast {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%) var(--skew-val);
  background: var(--c-bg-card);
  border-left: 4px solid var(--c-gold);
  padding: 12px 20px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 15px;
  transition: top 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  backdrop-filter: var(--glass-blur);
  z-index: 500;
}

#achievement-toast.show {
  top: 20px;
}

/* ── Animations ── */
@keyframes pulse {
  0% {
    opacity: 0.8;
    transform: scale(1);
  }

  50% {
    opacity: 1;
    transform: scale(1.05);
  }

  100% {
    opacity: 0.8;
    transform: scale(1);
  }
}

@keyframes slideUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes scanline {
  0% {
    transform: translateY(-100%);
  }

  100% {
    transform: translateY(100%);
  }
}