* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #0ff, #002);
  font-family: 'Courier New', monospace;
  color: #0ff;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  background-color: rgba(0, 0, 50, 0.5);
  padding: 30px 20px;
  border-radius: 20px;
  box-shadow: 0 0 20px #0ff;
  max-width: 95%;
  width: 600px;
  text-align: center;
}

select {
  background-color: #000;
  color: #0ff;
  border: 1px solid #0ff;
  padding: 10px;
  font-size: 1.2rem;
  border-radius: 6px;
  margin: 0 5px;
}

button {
  background: #0ff;
  color: #000;
  padding: 10px 16px;
  margin: 5px;
  font-weight: bold;
  font-size: 1rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background: #0cf;
}

.progress-timer-wrapper {
  margin: 30px 0 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.timer {
  font-size: 1.8rem;
  margin-top: 12px;
}

.popup {
  background-color: #f00;
  color: #fff;
  padding: 15px;
  margin: 10px 0;
  display: none;
  font-weight: bold;
  border-radius: 10px;
  animation: blink 1s infinite;
}

@keyframes blink {
  50% {
    opacity: 0.5;
  }
}

textarea {
  width: 100%;
  padding: 10px;
  background-color: #000;
  border: 1px solid #0ff;
  color: #0ff;
  border-radius: 6px;
  margin-top: 10px;
}

.motivation {
  margin-top: 15px;
  padding: 15px;
  background: #0ff;
  color: #000;
  font-weight: bold;
  border-radius: 10px;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 10px #0ff; }
  50% { box-shadow: 0 0 20px #0ff; }
}

.quote {
  margin-top: 25px;
  font-size: 1rem;
  color: #0ff;
}

.logs {
  text-align: left;
  margin-top: 25px;
}

#log-list {
  padding-left: 20px;
}

.clear-btn {
  background: transparent;
  color: #0ff;
  border: 1px solid #0ff;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.9rem;
  display: block;
  margin: 10px auto 0;
  box-shadow: 0 0 10px #0ff;
}

.progress-container {
  position: relative;
  width: 150px;
  height: 150px;
}

.progress-ring {
  transform: rotate(-90deg);
}

.ring-bg {
  stroke: #022;
  fill: none;
  stroke-width: 12;
}

.ring-fill {
  stroke: #0ff;
  fill: none;
  stroke-width: 12;
  stroke-dasharray: 377;
  stroke-dashoffset: 377;
  transition: stroke-dashoffset 0.5s linear;
}