@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&display=swap');

:root {
  --green: #00ff99;
  --red: #ff3366;
  --dark-bg: #010409;
  --panel-bg: #0a0f1a;
  --border: #1c2333;
  --text: #b8c1ec;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Share Tech Mono', monospace;
  background-color: var(--dark-bg);
  color: var(--text);
  background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 0 30px rgba(0, 255, 153, 0.1);
  text-align: center;
  width: 700px;
  max-width: 90vw;
  padding: 40px 32px;
}

h1 {
  color: var(--green);
  font-size: 28px;
  letter-spacing: 2px;
  margin: 0 0 8px 0;
  text-shadow: 0 0 8px var(--green), 0 0 16px var(--green), 0 0 32px var(--green);
  animation: glowPulse 2.5s infinite alternate;
}

@keyframes glowPulse {
  from {
    text-shadow: 0 0 6px var(--green), 0 0 16px var(--green);
  }
  to {
    text-shadow: 0 0 14px var(--green), 0 0 36px var(--green);
  }
}

.subtitle {
  font-size: 13px;
  color: #8a93b9;
  margin-bottom: 24px;
}

.difficulty-selector {
  margin-bottom: 24px;
  padding: 20px;
  background-color: #0e1525;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.difficulty-label {
  font-size: 11px;
  color: #5a6a8a;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.difficulty-buttons {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.difficulty-btn {
  background-color: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 20px;
  font-weight: 500;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.2s ease;
  font-family: 'Share Tech Mono', monospace;
  font-size: 12px;
}

.difficulty-btn:hover {
  border-color: var(--green);
  color: var(--green);
  background-color: rgba(0, 255, 153, 0.05);
}

.difficulty-btn.active {
  background-color: var(--green);
  color: var(--dark-bg);
  border-color: var(--green);
  box-shadow: 0 0 10px var(--green);
}

.custom-time-input {
  margin-top: 12px;
}

.custom-time-input input {
  width: 100%;
  max-width: 250px;
  margin: 0 auto;
  padding: 10px;
  font-size: 14px;
  background-color: #0a0f1a;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--green);
  font-family: 'Share Tech Mono', monospace;
  text-align: center;
}

.custom-time-input input:focus {
  border-color: var(--green);
  box-shadow: 0 0 8px rgba(0, 255, 153, 0.3);
}

.stats-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 12px;
}

.stat {
  flex: 1;
  background-color: #0e1525;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 12px;
  box-shadow: inset 0 0 8px rgba(0, 255, 153, 0.05);
}

.label {
  font-size: 10px;
  color: #5a6a8a;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

.value {
  font-size: 26px;
  color: var(--green);
  text-shadow: 0 0 6px var(--green);
  font-weight: bold;
}

.word-display {
  background-color: #0e1525;
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 40px 20px;
  font-size: 32px;
  margin-bottom: 24px;
  color: var(--text);
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 1px;
  transition: all 0.3s ease;
}

.word-display.correct {
  background-color: rgba(0, 255, 153, 0.15);
  border-color: var(--green);
  box-shadow: 0 0 20px rgba(0, 255, 153, 0.4);
  animation: correctBlink 0.4s ease;
}

@keyframes correctBlink {
  0%, 100% {
    background-color: rgba(0, 255, 153, 0.15);
    border-color: var(--green);
  }
  50% {
    background-color: rgba(0, 255, 153, 0.3);
    border-color: var(--green);
    box-shadow: 0 0 30px rgba(0, 255, 153, 0.6);
  }
}

input {
  width: 100%;
  background-color: #0e1525;
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  font-size: 20px;
  color: var(--green);
  outline: none;
  margin-bottom: 24px;
  font-family: 'Share Tech Mono', monospace;
  letter-spacing: 1px;
}

input:focus {
  border-color: var(--green);
  box-shadow: 0 0 10px var(--green);
}

input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.controls {
  display: flex;
  justify-content: center;
  gap: 12px;
}

button {
  background-color: transparent;
  color: var(--green);
  border: 2px solid var(--green);
  border-radius: 8px;
  padding: 12px 32px;
  font-weight: 600;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  transition: all 0.2s ease;
  font-family: 'Share Tech Mono', monospace;
  font-size: 14px;
}

button:hover:not(:disabled) {
  background-color: rgba(0, 255, 153, 0.1);
  box-shadow: 0 0 12px var(--green);
  transform: translateY(-1px);
}

button:active:not(:disabled) {
  transform: translateY(0);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#reset-btn {
  color: var(--red);
  border-color: var(--red);
}

#reset-btn:hover:not(:disabled) {
  background-color: rgba(255, 51, 102, 0.1);
  box-shadow: 0 0 12px var(--red);
}

.match-feedback {
  margin-top: 16px;
  font-size: 12px;
  color: var(--green);
  letter-spacing: 1px;
  opacity: 0;
  transform: translateY(-5px);
  transition: all 0.3s ease;
  text-shadow: 0 0 8px var(--green);
  min-height: 20px;
}

.match-feedback.show {
  opacity: 1;
  transform: translateY(0);
}

/* Back to main site button */
.back-to-main {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
}

.back-to-main a {
    display: inline-block;
    padding: 10px 20px;
    background-color: #232931;
    color: #fff;
    text-decoration: none;
    border-radius: 25px;
    font-family: 'Poppins', sans-serif;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.35);
    transition: all 0.3s ease;
}

.back-to-main a:hover {
    background-color: #3A6EA5;
    transform: translateY(-2px);
    box-shadow: 0 7px 20px rgba(0, 0, 0, 0.45);
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .back-to-main {
        top: 10px;
        left: 10px;
    }
    
    .back-to-main a {
        padding: 8px 15px;
        font-size: 12px;
    }
}