:root {
  --bg-dark: #000000;
  --bg-panel: #080707;
  --text-main: #e0e0e0;
  --accent-crimson: #8b0000;
  --accent-silver: #c0c0c0;
  --accent-red: #A50000;
  --font-main: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
  --font-title: 'Rajdhani', cursive;
  --font-subtitle: 'rajdhani_semiBold', cursive;
}

.hidden {
  display: none !important;
}

@font-face {
  font-family: 'Rajdhani';
  src: url('./fonts/Rajdhani/Rajdhani-Bold.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: 'Inter';
  src: url('/fonts/Inter/static/Inter_18pt-Medium.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}

body {
  background-color: rgb(19, 18, 18);
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

footer {
  width: 100%;
  text-align: center;
  padding: 20px 0;
  margin-top: 40px;
}

.keypad-container {
  background-color: var(--bg-panel);
  border: 1px solid #333;
  border-top: 4px solid var(--accent-crimson);
  border-radius: 8px;
  padding: 30px;
  max-width: 380px;
  width: 100%;
  margin: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
}

.keypad-title {
  color: var(--accent-silver);
  font-family: var(--font-title);
  font-size: 1.5rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin: 0;
}

.keypad-display {
  display: flex;
  justify-content: center;
  gap: 15px;
  background-color: var(--bg-dark);
  padding: 15px 25px;
  border: 1px solid #222;
  border-radius: 6px;
  width: 100%;
}

.keypad-display .slot {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--accent-red);
  min-width: 25px;
  text-align: center;
  text-shadow: 0 0 8px rgba(165, 0, 0, 0.7);
}

.keypad-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #777;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  min-height: 18px;
  margin: 0;
}

.keypad-status.error {
  color: var(--accent-red);
  text-shadow: 0 0 6px rgba(165, 0, 0, 0.6);
}

.keypad-status.success {
  color: #00ff66;
  text-shadow: 0 0 6px rgba(0, 255, 102, 0.6);
}

.keypad-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  width: 100%;
}

.btn-key {
  background-color: #121111;
  border: 1px solid #2a2a2a;
  color: var(--text-main);
  font-family: 'Rajdhani', sans-serif !important;
  font-weight: normal !important;
  font-size: 1.3rem;
  padding: 16px 0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-key:hover {
  border-color: var(--accent-red);
  color: #ffffff;
  box-shadow: 0 0 10px rgba(165, 0, 0, 0.4);
  transform: translateY(-2px);
}

.btn-key:active {
  transform: scale(0.95);
  background-color: var(--accent-crimson);
}

.btn-action {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 1px;
}

#btn-del {
  color: #888;
}

#btn-del:hover {
  border-color: #ff4444;
  color: #ff4444;
}

#btn-enter {
  color: var(--accent-silver);
}

#btn-enter:hover {
  border-color: var(--accent-red);
}

.reward-box {
  background-color: rgba(8, 252, 65, 0.15);
  border: 1px solid green;
  border-radius: 6px;
  padding: 20px;
  text-align: center;
  width: 100%;
  box-shadow: 0 0 15px green;
  animation: fadeIn 0.4s ease-in-out;
}

.reward-box h3 {
  color: #00ff66;
  font-family: var(--font-title);
  font-size: 1.3rem;
  letter-spacing: 2px;
  margin: 0 0 8px 0;
}

.reward-box p {
  color: var(--text-main);
  font-size: 0.85rem;
  margin: 0;
  font-family: var(--font-mono);
}

.shake {
  animation: shakeAnimation 0.4s ease-in-out;
}

.footer {
  text-align: center;
  padding: 10px 0;
  border-top: 1px solid #333;
  font-family: var(--font-mono);
  color: var(--accent-silver);
  font-size: 0.9em;

}

.footer-links {
  display: flex;
  gap: 15px;
  justify-content: center;
  align-items: center;

}

.footer-links a {
  color: var(--accent-silver);
  text-decoration: none;
  padding: 10px 20px;
  border: 1px solid var(--accent-silver);
  border-radius: 5px;
  font-family: var(--font-title);
  font-size: 0.9em;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links a:hover {
  background-color: var(--accent-crimson);
  border-color: var(--accent-crimson);
  color: #fff;
}

@keyframes shakeAnimation {

  0%,
  100% {
    transform: translateX(0);
  }

  20%,
  60% {
    transform: translateX(-8px);
  }

  40%,
  80% {
    transform: translateX(8px);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

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

@media (max-width: 758px) {

  body{
    min-height: 100dvh;
    flex-direction: column;
    align-items: center;
    gap: 50px;
    padding: 20px 15px;
  }
  
  footer{
    width: 100%;
    text-align: center;
    padding-bottom: 20px;
    margin-top: 40px;
  }
  
  .keypad-container {
    max-width: 80%;
    padding: 20px 15px;
    margin: auto 0;
  }

  .keypad-title {
    font-size: 1.2rem;
  }

  .keypad-display .slot {
    font-size: 1.5rem;
    min-width: 20px;
  }

  .keypad-display {
    padding: 12px 12px;
  }

  .keypad-buttons {
    gap: 8px;
    max-width: 100%;
  }

  .btn-key {
    padding: 12px 0;
    font-size: 1.1rem;
  }

  .btn-action {
    font-size: 0.75rem;
  }

  .reward-box {
    padding: 9px;
  }

}