:root {
  --dark-green: #1e3c32;
  --medium-green: #4a7c59;
  --light-green: #8fbc8f;
  --pastel-blue: #a7d7c5;
  --pastel-yellow: #f9f7cf;
  --pastel-orange: #ffd8a6;
  --dark-text: #2c3e50;
  --light-text: #ecf0f1;
  --card-bg: rgba(255, 255, 255, 0.95);
  --shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(
    135deg,
    var(--dark-green) 0%,
    var(--medium-green) 100%
  );
  min-height: 100vh;
  color: var(--dark-text);
  padding: 20px;
  display: flex;
  justify-content: center;
}

.container {
  max-width: 1200px;
  width: 100%;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 40px;
  color: var(--light-text);
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

header p {
  font-size: 1.2rem;
  opacity: 0.9;
}

.main-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 30px;
  margin-bottom: 30px;
}

.profile-section,
.leaderboard-section,
.performance-section {
  background: var(--card-bg);
  border-radius: 20px;
  padding: 30px;
  box-shadow: var(--shadow);
  text-align: center;
}

.user-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 20px;
  background: linear-gradient(45deg, var(--light-green), var(--pastel-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--light-text);
  border: 4px solid var(--medium-green);
}

.user-info h2 {
  color: var(--dark-green);
  margin-bottom: 10px;
}

.user-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin: 20px 0;
}

.stat-item {
  background: var(--pastel-yellow);
  padding: 15px;
  border-radius: 15px;
  text-align: center;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--dark-green);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--dark-text);
  opacity: 0.8;
}

.section-title {
  color: var(--dark-green);
  margin-bottom: 25px;
  font-size: 1.8rem;
  text-align: center;
}

.streak-display {
  background: linear-gradient(135deg, var(--pastel-orange), var(--pastel-yellow));
  padding: 20px;
  border-radius: 15px;
  margin-bottom: 25px;
  text-align: center;
}

.streak-count {
  font-size: 3rem;
  font-weight: bold;
  color: var(--dark-green);
  margin-bottom: 10px;
}

.badges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
  gap: 15px;
  margin: 25px 0;
}

.badge {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--pastel-blue), var(--light-green));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--light-text);
  border: 3px solid var(--medium-green);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.badge:hover {
  transform: scale(1.1);
}

.badge.earned {
  background: linear-gradient(45deg, var(--pastel-orange), #ff6b6b);
  box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
}

.levels-progress {
  background: var(--pastel-blue);
  padding: 20px;
  border-radius: 15px;
  margin: 25px 0;
}

.progress-bar {
  background: rgba(255, 255, 255, 0.3);
  height: 20px;
  border-radius: 10px;
  margin: 10px 0;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--light-green), var(--medium-green));
  border-radius: 10px;
  width: 75%;
  transition: width 0.5s ease;
}

.chart-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 300px;
  margin: 20px 0;
}

.daily-targets {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.target-card {
  background: var(--pastel-yellow);
  padding: 20px;
  border-radius: 15px;
  text-align: center;
}

.target-card.completed {
  background: var(--light-green);
  color: var(--light-text);
}

footer {
  text-align: center;
  color: var(--light-text);
  margin-top: 50px;
  opacity: 0.8;
}

/* ---------- MOBILE RESPONSIVE ---------- */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
  }

  .main-content {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .profile-section,
  .leaderboard-section,
  .performance-section {
    width: 100%;
    max-width: 400px;
  }

  .user-stats {
    grid-template-columns: 1fr;
  }

  .badges-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .chart-container {
    width: 100%;
    max-width: 300px;
  }
}