@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg-1: #0b0f1f;
  --bg-2: #161b33;
  --bg-3: #1f2547;
  --accent: #ffc857;
  --accent-2: #ff9f1c;
  --accent-soft: rgba(255, 200, 87, 0.18);
  --text: #f4f4fa;
  --text-dim: #9aa0c0;
  --card: rgba(255, 255, 255, 0.05);
  --card-border: rgba(255, 255, 255, 0.1);
  --win-1: #1c3b2e;
  --win-2: #2f6b4f;
  --win-accent: #6ee7a0;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: inherit;
}

html {
  font-size: 62.5%;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.4rem;
  background: radial-gradient(circle at 15% 15%, rgba(255, 200, 87, 0.12), transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(110, 130, 255, 0.14), transparent 45%),
    linear-gradient(160deg, var(--bg-1) 0%, var(--bg-2) 50%, var(--bg-3) 100%);
  background-attachment: fixed;
  transition: background var(--transition);
}

body.win {
  background: radial-gradient(circle at 15% 15%, rgba(110, 231, 160, 0.18), transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(255, 200, 87, 0.16), transparent 45%),
    linear-gradient(160deg, var(--win-1) 0%, #173026 50%, #0e1f1a 100%);
}

/* GAME CONTAINER */
.game {
  width: 100%;
  max-width: 76rem;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  overflow: hidden;
  animation: rise 0.6s var(--transition);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* HEADER */
header {
  position: relative;
  padding: 4.4rem 4rem 7rem;
  text-align: center;
  border-bottom: 1px solid var(--card-border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.4rem;
}

.between {
  font-size: 1.3rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.between strong {
  color: var(--accent);
  font-weight: 700;
}

h1 {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 3.6rem;
  letter-spacing: -0.01em;
  background: linear-gradient(120deg, #ffffff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

body.win h1 {
  background: linear-gradient(120deg, #ffffff 0%, var(--win-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.number {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #1a1308;
  font-size: 5.2rem;
  width: 12rem;
  height: 12rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 50%);
  border-radius: 50%;
  border: 4px solid var(--bg-2);
  box-shadow: 0 0 0 6px rgba(255, 200, 87, 0.12), 0 16px 40px -12px rgba(255, 159, 28, 0.55);
  transition: all var(--transition);
}

body.win .number {
  width: 15rem;
  height: 15rem;
  font-size: 6rem;
  background: linear-gradient(145deg, var(--win-accent) 0%, #2f9e63 100%);
  color: #0c1f15;
  box-shadow: 0 0 0 6px rgba(110, 231, 160, 0.16), 0 16px 50px -12px rgba(110, 231, 160, 0.6);
  animation: pop 0.5s var(--transition);
}

@keyframes pop {
  0% {
    transform: translate(-50%, 50%) scale(0.7);
  }
  60% {
    transform: translate(-50%, 50%) scale(1.08);
  }
  100% {
    transform: translate(-50%, 50%) scale(1);
  }
}

/* MAIN */
main {
  padding: 7rem 4rem 4.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
}

.left,
.right {
  flex: 1 1 28rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.right {
  align-items: stretch;
}

/* INPUT */
.guess {
  background: rgba(255, 255, 255, 0.04);
  border: 2px solid var(--card-border);
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  color: var(--text);
  font-size: 4rem;
  padding: 1.6rem;
  width: 16rem;
  text-align: center;
  display: block;
  margin-bottom: 2.4rem;
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.guess::placeholder {
  color: var(--text-dim);
  opacity: 0.5;
}

.guess:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.guess::-webkit-outer-spin-button,
.guess::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* BUTTONS */
.btn {
  border: none;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.btn-default {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #1a1308;
  padding: 1.6rem 4rem;
  font-size: 1.8rem;
  box-shadow: 0 12px 30px -10px rgba(255, 159, 28, 0.55);
}

.btn-default:hover {
  transform: translateY(-2px);
  filter: brightness(1.06);
}

.btn-default:active {
  transform: translateY(0);
}

.again {
  position: relative;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border: 1px solid var(--card-border);
  padding: 1rem 1.8rem;
}

.again:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}

/* MESSAGE + STATS */
.message {
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 2.4rem;
  min-height: 2.4rem;
  text-align: center;
}

.right .message {
  text-align: left;
}

.stats {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.stat {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.6rem 2rem;
  transition: border-color var(--transition), background var(--transition);
}

.stat:hover {
  border-color: var(--accent-soft);
  background: rgba(255, 255, 255, 0.06);
}

.stat-icon {
  font-size: 2.4rem;
  line-height: 1;
}

.stat-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.stat-label {
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.score,
.highscore {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 2.2rem;
}

body.win .score {
  color: var(--win-accent);
}

/* RESPONSIVE */
@media (max-width: 640px) {
  header {
    padding: 3.6rem 2.4rem 6rem;
  }

  main {
    padding: 6rem 2.4rem 3.6rem;
  }

  h1 {
    font-size: 2.6rem;
  }

  .number {
    width: 9.6rem;
    height: 9.6rem;
    font-size: 3.8rem;
  }

  body.win .number {
    width: 11.6rem;
    height: 11.6rem;
    font-size: 4.6rem;
  }

  .guess {
    width: 100%;
    font-size: 3rem;
  }
}