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

/* BASE */
html, body {
  height: 100%;
  width: 100%;
}

/* BODY */
body {
  overflow: auto;
  font-family: Arial, sans-serif;
  background: #000;
}

/* VARIABLES */
:root {
  --color-dark: #17181c;
  --color-white: #f7f7f7;
  --color-surf: #08fdd8;
}

/* HIDE */
.hide {
  display: none;
}

/* 🔥 GAME AREA (FINAL FIX) */
.gamearea {
  height: calc(100vh - 60px); /* cut fix */
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
  position: relative;
  background: #777;
  overflow: hidden;
}

/* PLAYER + ENEMY */
.car,
.enemy {
  width: 50px;
  height: 100px;
  background-image: url("../images/road-rider/player.png");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 10px;
}

/* ROAD LINES */
.line {
  position: absolute;
  width: 10px;
  height: 50px;
  background: #fff;
  left: 50%;
  transform: translateX(-50%);
}

/* START MENU */
.start__menu {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 450px;
  background: var(--color-white);
  text-align: center;
  border: 2px solid var(--color-dark);
  border-radius: 10px;
  overflow: hidden;
  z-index: 100;
}

/* MENU */
.start__menu-container {
  width: 100%;
}

/* DIFFICULTY */
.difficulty {
  padding: 20px 0;
  border-bottom: 2px solid var(--color-dark);
}

.difficulty p {
  font-weight: 500;
}

.difficulty__title {
  font-size: 1.4rem;
  color: var(--color-dark);
}

.difficulty__subtitle {
  font-size: 0.95rem;
  color: #999;
  margin-bottom: 15px;
}

.difficulty-selected {
  font-size: 0.95rem;
  color: #999;
  margin-top: 10px;
}

/* BUTTONS */
.difficulty__button {
  cursor: pointer;
  min-width: 90px;
  padding: 8px 10px;
  margin: 5px;
  font-size: 0.95rem;
  color: #fff;
  background-color: var(--color-dark);
  border: 1px solid var(--color-dark);
  border-radius: 4px;
  transition: all 0.2s ease;
}

.difficulty__button.active {
  color: var(--color-dark);
  background-color: #fff;
}

.difficulty__button:hover {
  color: var(--color-dark);
  background-color: #fff;
  border-color: #999;
}

/* START BUTTON */
.game__start {
  width: 100%;
  padding: 14px;
  font-size: 1.2rem;
  color: #fff;
  background: var(--color-dark);
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.game__start:hover {
  color: var(--color-dark);
  background: #fff;
}

/* SCORE */
.score_container {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 60px;
  background: var(--color-dark);
  font-size: 1.4rem;
  color: var(--color-surf);
}

.score_inner {
  display: flex;
  align-items: center;
  width: 300px;
  height: 100%;
}

.score_inner div {
  flex: 1;
  text-align: center;
}

/* SCREEN FIX */
.screen {
  width: 100%;
  height: auto;
}

/* MOBILE FIX */
@media (max-width: 600px) {
  .gamearea {
    height: calc(100vh - 60px);
  }

  .car,
  .enemy {
    width: 40px;
    height: 80px;
  }

  .line {
    height: 40px;
  }
}