* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: #f4f7fb;
  color: #1f2937;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 30px;
}

header h1 {
  font-size: 2.2rem;
  margin-bottom: 10px;
}

header p {
  color: #050505;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  margin-left: 340px;
}

.card1 {
  background: linear-gradient(180deg, #3a7ecc 0%, #2563eb 100%);
  padding: 24px;
  border-radius: 20px;
  margin-bottom: 20px;
  width: 330px;
  min-height: 400px;
  position: fixed;
  left: 20px;
  top: 220px;
  box-shadow: 0 12px 30px rgba(42, 78, 156, 0.18);
  color: #ffffff;
  text-align: left;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.card1 h2 {
  font-size: 24px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.25);
}

.card1 p {
  margin-bottom: 12px;
  line-height: 1.7;
  font-size: 15px;
  text-align: left;
}

.card1 strong {
  color: #dbeafe;
}

.card {
  background: white;
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.card h2 {
  margin-bottom: 15px;
}

input {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
}

button {
  padding: 12px 18px;
  border: none;
  border-radius: 8px;
  background: #2563eb;
  color: white;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: #1d4ed8;
}

ul {
  list-style: none;
  margin-top: 15px;
}

li {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  padding: 10px;
  border-radius: 8px;
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.stones-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.progress-bar {
  width: 100%;
  height: 20px;
  background: #e5e7eb;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 10px;
}

#progressFill {
  width: 0%;
  height: 100%;
  background: #22c55e;
  transition: width 0.3s ease;
}

.completed {
  text-decoration: line-through;
  opacity: 0.7;
}

footer {
  text-align: center;
  margin-top: 30px;
  color: #6b7280;
}

@media (max-width: 900px) {
  main {
    margin-left: 0;
  }

  .card1 {
    position: static;
    width: 100%;
  }

  .stones-container {
    grid-template-columns: 1fr;
  }
}