:root {
  --bg-light: #E8EEF5;
  --bg-dark: #2A2D3E;
  --primary: #B8A9C9;
  --secondary: #A8D5BA;
  --accent: #F5C6AA;
  --success: #98D4A1;
  --warning: #F4A5A5;
  --text-light: #5A5A7A;
  --text-dark: #E0E0F0;
  --shadow-light: rgba(255, 255, 255, 0.8);
  --shadow-dark: rgba(163, 177, 198, 0.6);
  --shadow-dark-mode-light: rgba(60, 65, 90, 0.5);
  --shadow-dark-mode-dark: rgba(20, 22, 35, 0.8);
}

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

body {
  font-family: 'Nunito', sans-serif;
  overflow-x: hidden;
}

.light-mode {
  background: var(--bg-light);
  color: var(--text-light);
}

.dark-mode {
  background: var(--bg-dark);
  color: var(--text-dark);
}

.header {
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.light-mode .header {
  background: linear-gradient(145deg, #f0f5fc, #dde5ee);
  box-shadow: 8px 8px 16px var(--shadow-dark), -8px -8px 16px var(--shadow-light);
}

.dark-mode .header {
  background: linear-gradient(145deg, #2f3345, #252838);
  box-shadow: 8px 8px 16px var(--shadow-dark-mode-dark), -8px -8px 16px var(--shadow-dark-mode-light);
}

.title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.resource-bar {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.resource {
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.95rem;
}

.light-mode .resource {
  background: linear-gradient(145deg, #f5faff, #dce3ec);
  box-shadow: 4px 4px 8px var(--shadow-dark), -4px -4px 8px var(--shadow-light);
}

.dark-mode .resource {
  background: linear-gradient(145deg, #33384d, #252838);
  box-shadow: 4px 4px 8px var(--shadow-dark-mode-dark), -4px -4px 8px var(--shadow-dark-mode-light);
}

.resource.gold { color: #D4A038; }
.resource.gem { color: #7B68EE; }
.resource.xp { color: #4ECDC4; }

.main-content {
  padding: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.clicker-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 30px;
}

.passive-display {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 10px;
  padding: 8px 20px;
  border-radius: 20px;
}

.light-mode .passive-display {
  background: linear-gradient(145deg, #f5faff, #dce3ec);
  box-shadow: inset 3px 3px 6px var(--shadow-dark), inset -3px -3px 6px var(--shadow-light);
}

.dark-mode .passive-display {
  background: linear-gradient(145deg, #252838, #33384d);
  box-shadow: inset 3px 3px 6px var(--shadow-dark-mode-dark), inset -3px -3px 6px var(--shadow-dark-mode-light);
}

.combo-display {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 15px;
  animation: comboShake 0.1s infinite;
}

@keyframes comboShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-2px) rotate(-1deg); }
  75% { transform: translateX(2px) rotate(1deg); }
}

.clicker-button {
  width: clamp(180px, 40vw, 220px);
  height: clamp(180px, 40vw, 220px);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: 'Nunito', sans-serif;
  transition: all 0.15s ease;
  background: linear-gradient(145deg, #F5C6AA, #E8B099);
}

.light-mode .clicker-button {
  box-shadow: 12px 12px 24px var(--shadow-dark), -12px -12px 24px var(--shadow-light),
              inset 0 0 0 transparent;
}

.dark-mode .clicker-button {
  background: linear-gradient(145deg, #B8A9C9, #A399B9);
  box-shadow: 12px 12px 24px var(--shadow-dark-mode-dark), -12px -12px 24px var(--shadow-dark-mode-light);
}

.clicker-button.pulse {
  animation: pulse 2s ease-in-out infinite;
}

.clicker-button.pressed {
  transform: scale(0.95);
}

.light-mode .clicker-button.pressed {
  box-shadow: 4px 4px 8px var(--shadow-dark), -4px -4px 8px var(--shadow-light),
              inset 8px 8px 16px rgba(0,0,0,0.1), inset -8px -8px 16px rgba(255,255,255,0.3);
}

.dark-mode .clicker-button.pressed {
  box-shadow: 4px 4px 8px var(--shadow-dark-mode-dark), -4px -4px 8px var(--shadow-dark-mode-light),
              inset 8px 8px 16px rgba(0,0,0,0.2), inset -8px -8px 16px rgba(255,255,255,0.05);
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.click-power {
  font-size: clamp(2rem, 8vw, 3rem);
  font-weight: 900;
  color: white;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.click-label {
  font-size: 1.2rem;
  font-weight: 700;
  color: rgba(255,255,255,0.9);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.floating-number {
  position: fixed;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--success);
  text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
  z-index: 1000;
  transform: translateX(-50%);
}

.action-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.neu-button {
  padding: 12px 24px;
  border-radius: 16px;
  border: none;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.light-mode .neu-button {
  background: linear-gradient(145deg, #f5faff, #dce3ec);
  color: var(--text-light);
  box-shadow: 6px 6px 12px var(--shadow-dark), -6px -6px 12px var(--shadow-light);
}

.dark-mode .neu-button {
  background: linear-gradient(145deg, #33384d, #252838);
  color: var(--text-dark);
  box-shadow: 6px 6px 12px var(--shadow-dark-mode-dark), -6px -6px 12px var(--shadow-dark-mode-light);
}

.neu-button:hover {
  transform: translateY(-2px);
}

.neu-button:active {
  transform: translateY(0);
}

.light-mode .neu-button:active {
  box-shadow: inset 4px 4px 8px var(--shadow-dark), inset -4px -4px 8px var(--shadow-light);
}

.dark-mode .neu-button:active {
  box-shadow: inset 4px 4px 8px var(--shadow-dark-mode-dark), inset -4px -4px 8px var(--shadow-dark-mode-light);
}

.neu-button.primary {
  background: linear-gradient(145deg, var(--secondary), #8FC5A0);
  color: white;
}

.neu-button.danger {
  background: linear-gradient(145deg, var(--warning), #E89595);
  color: white;
}

.skill-tree-btn { background: linear-gradient(145deg, #C8B9D9, var(--primary)) !important; color: white !important; }
.stats-btn { background: linear-gradient(145deg, #B8E5CA, var(--secondary)) !important; color: white !important; }
.settings-btn { background: linear-gradient(145deg, #FFD6BA, var(--accent)) !important; color: white !important; }

.section-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 20px;
  text-align: center;
}

.upgrades-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
}

.upgrade-card {
  padding: 20px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.light-mode .upgrade-card {
  background: linear-gradient(145deg, #f5faff, #dce3ec);
  box-shadow: 6px 6px 12px var(--shadow-dark), -6px -6px 12px var(--shadow-light);
}

.dark-mode .upgrade-card {
  background: linear-gradient(145deg, #33384d, #252838);
  box-shadow: 6px 6px 12px var(--shadow-dark-mode-dark), -6px -6px 12px var(--shadow-dark-mode-light);
}

.upgrade-card.affordable {
  border: 2px solid var(--secondary);
}

.upgrade-card.affordable:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 20px rgba(168, 213, 186, 0.4);
}

.upgrade-card.locked {
  opacity: 0.6;
  cursor: not-allowed;
}

.upgrade-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 5px;
}

.upgrade-desc {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-bottom: 10px;
}

.upgrade-level {
  font-weight: 800;
  color: var(--primary);
}

.upgrade-cost {
  font-weight: 700;
  color: #D4A038;
  margin-top: 5px;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  backdrop-filter: blur(4px);
}

.skill-tree-modal, .stats-modal, .settings-modal, .modal-content {
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 30px;
  border-radius: 24px;
}

.light-mode .skill-tree-modal, .light-mode .stats-modal, .light-mode .settings-modal, .light-mode .modal-content {
  background: var(--bg-light);
  box-shadow: 20px 20px 40px var(--shadow-dark), -20px -20px 40px var(--shadow-light);
}

.dark-mode .skill-tree-modal, .dark-mode .stats-modal, .dark-mode .settings-modal, .dark-mode .modal-content {
  background: var(--bg-dark);
  box-shadow: 20px 20px 40px var(--shadow-dark-mode-dark), -20px -20px 40px var(--shadow-dark-mode-light);
}

.modal-title {
  font-size: 1.6rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 25px;
}

.modal-text {
  text-align: center;
  margin-bottom: 15px;
}

.welcome-earnings {
  font-size: 2rem;
  font-weight: 900;
  color: #D4A038;
  text-align: center;
  margin-bottom: 20px;
}

.skill-branches {
  display: grid;
  gap: 25px;
}

.skill-branch {
  padding: 20px;
  border-radius: 20px;
}

.light-mode .skill-branch {
  background: linear-gradient(145deg, #f5faff, #dce3ec);
  box-shadow: inset 4px 4px 8px var(--shadow-dark), inset -4px -4px 8px var(--shadow-light);
}

.dark-mode .skill-branch {
  background: linear-gradient(145deg, #252838, #33384d);
  box-shadow: inset 4px 4px 8px var(--shadow-dark-mode-dark), inset -4px -4px 8px var(--shadow-dark-mode-light);
}

.skill-branch.clickPower { border-left: 4px solid #F4A5A5; }
.skill-branch.passive { border-left: 4px solid var(--secondary); }
.skill-branch.multiplier { border-left: 4px solid var(--primary); }
.skill-branch.special { border-left: 4px solid #87CEEB; }

.branch-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.skill-nodes {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skill-node {
  padding: 15px;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.light-mode .skill-node {
  background: linear-gradient(145deg, #f5faff, #dce3ec);
  box-shadow: 4px 4px 8px var(--shadow-dark), -4px -4px 8px var(--shadow-light);
}

.dark-mode .skill-node {
  background: linear-gradient(145deg, #33384d, #252838);
  box-shadow: 4px 4px 8px var(--shadow-dark-mode-dark), -4px -4px 8px var(--shadow-dark-mode-light);
}

.skill-node.owned {
  border: 2px solid var(--success);
  background: linear-gradient(145deg, rgba(152, 212, 161, 0.2), rgba(136, 196, 145, 0.1));
}

.skill-node.available {
  border: 2px solid var(--secondary);
  cursor: pointer;
}

.skill-node.available:hover {
  transform: scale(1.02);
  box-shadow: 0 0 15px rgba(168, 213, 186, 0.5);
}

.skill-node.locked, .skill-node.locked-cost {
  opacity: 0.5;
  cursor: not-allowed;
}

.skill-name {
  font-weight: 700;
  margin-bottom: 4px;
}

.skill-desc {
  font-size: 0.85rem;
  opacity: 0.8;
}

.skill-cost {
  font-size: 0.9rem;
  font-weight: 700;
  color: #4ECDC4;
  margin-top: 8px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  margin-bottom: 25px;
}

.stat-item {
  padding: 15px;
  border-radius: 16px;
  text-align: center;
}

.light-mode .stat-item {
  background: linear-gradient(145deg, #f5faff, #dce3ec);
  box-shadow: inset 3px 3px 6px var(--shadow-dark), inset -3px -3px 6px var(--shadow-light);
}

.dark-mode .stat-item {
  background: linear-gradient(145deg, #252838, #33384d);
  box-shadow: inset 3px 3px 6px var(--shadow-dark-mode-dark), inset -3px -3px 6px var(--shadow-dark-mode-light);
}

.stat-label {
  font-size: 0.85rem;
  opacity: 0.7;
  display: block;
  margin-bottom: 5px;
}

.stat-value {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
}

.achievements-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.achievements-grid {
  display: grid;
  gap: 10px;
}

.achievement {
  padding: 12px 15px;
  border-radius: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.light-mode .achievement {
  background: linear-gradient(145deg, #f5faff, #dce3ec);
  box-shadow: 3px 3px 6px var(--shadow-dark), -3px -3px 6px var(--shadow-light);
}

.dark-mode .achievement {
  background: linear-gradient(145deg, #33384d, #252838);
  box-shadow: 3px 3px 6px var(--shadow-dark-mode-dark), -3px -3px 6px var(--shadow-dark-mode-light);
}

.achievement.unlocked {
  border: 2px solid #D4A038;
}

.achievement.locked {
  opacity: 0.5;
}

.ach-name {
  font-weight: 700;
}

.ach-desc {
  font-size: 0.85rem;
  opacity: 0.7;
}

.settings-options {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px;
  border-radius: 16px;
}

.light-mode .setting-row {
  background: linear-gradient(145deg, #f5faff, #dce3ec);
  box-shadow: inset 3px 3px 6px var(--shadow-dark), inset -3px -3px 6px var(--shadow-light);
}

.dark-mode .setting-row {
  background: linear-gradient(145deg, #252838, #33384d);
  box-shadow: inset 3px 3px 6px var(--shadow-dark-mode-dark), inset -3px -3px 6px var(--shadow-dark-mode-light);
}

.toggle {
  padding: 8px 20px;
  border-radius: 20px;
  border: none;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.toggle.on {
  background: var(--success);
  color: white;
}

.toggle.off {
  background: #ccc;
  color: #666;
}

.settings-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.save-info {
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.7;
  margin-top: 15px;
}

.close-btn {
  display: block;
  margin: 20px auto 0;
}

.notification {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 15px 30px;
  border-radius: 20px;
  font-weight: 700;
  z-index: 2000;
  animation: slideIn 0.3s ease;
  background: linear-gradient(145deg, var(--primary), #A899B9);
  color: white;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

@keyframes slideIn {
  from {
    transform: translateX(-50%) translateY(-20px);
    opacity: 0;
  }
  to {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }
}

.footer {
  text-align: center;
  padding: 30px;
  margin-top: 40px;
}

.remix-link {
  padding: 12px 24px;
  border-radius: 16px;
  text-decoration: none;
  font-weight: 700;
  transition: all 0.2s ease;
}

.light-mode .remix-link {
  background: linear-gradient(145deg, #f5faff, #dce3ec);
  color: var(--text-light);
  box-shadow: 4px 4px 8px var(--shadow-dark), -4px -4px 8px var(--shadow-light);
}

.dark-mode .remix-link {
  background: linear-gradient(145deg, #33384d, #252838);
  color: var(--text-dark);
  box-shadow: 4px 4px 8px var(--shadow-dark-mode-dark), -4px -4px 8px var(--shadow-dark-mode-light);
}

.remix-link:hover {
  transform: translateY(-2px);
}

@media (max-width: 480px) {
  .header {
    justify-content: center;
    text-align: center;
  }
  
  .resource-bar {
    justify-content: center;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .settings-buttons {
    grid-template-columns: 1fr;
  }
  
  .achievement {
    flex-direction: column;
    text-align: center;
    gap: 5px;
  }
}