:root {
  --bg-color: #0b1a2c;
  --panel-color: rgba(0, 0, 0, 0.4);
  --accent: #7aff99;
  --text-color: #ffffff;
  --text-light: #cfe8f3;
  --text-secondary: #a0d8ff;
  --font: 'Segoe UI', sans-serif;
  --transition: all 0.3s ease;
  --glow: 0 0 10px rgba(122, 255, 153, 0.5);
}

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

body {
  font-family: var(--font);
  background-color: var(--bg-color);
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(122, 255, 153, 0.1) 0%, transparent 20%),
    radial-gradient(circle at 90% 80%, rgba(160, 216, 255, 0.1) 0%, transparent 20%),
    linear-gradient(to bottom, #0b1a2c, #0a1422);
  color: white;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow-x: hidden;
}

.wrapper {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
  text-align: center;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.header {
  margin-bottom: 40px;
}

.header h1 {
  font-size: 3.5rem;
  margin-bottom: 10px;
  background: linear-gradient(45deg, var(--accent), #4CAF50);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: var(--glow);
  letter-spacing: 1px;
}

.header h2 {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  font-weight: 300;
}

.main-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 25px;
  flex: 1;
  justify-content: center;
  width: 100%;
}

.main-panel {
  width: 100%;
  max-width: 500px;
  min-height: 150px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.side-panels {
  display: flex;
  flex-direction: row;
  gap: 20px;
  width: 100%;
  max-width: 500px;
  justify-content: center;
}

.side-panels .panel {
  flex: 1;
  min-width: 200px;
}

.panel {
  background: linear-gradient(135deg, rgba(30, 30, 30, 0.9), rgba(40, 40, 40, 0.8));
  border: 1px solid rgba(122, 255, 153, 0.2);
  border-radius: 16px;
  padding: 24px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.panel:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  border-color: rgba(122, 255, 153, 0.4);
}

.title {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--accent);
  text-align: center;
}

.play-panel .modes {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.play-panel .modes button,
.mode-btn {
  background: rgba(122, 255, 153, 0.1);
  border: 1px solid rgba(122, 255, 153, 0.3);
  border-radius: 6px;
  color: var(--text-light);
  font-size: 1rem;
  cursor: pointer;
  padding: 8px 16px;
  transition: var(--transition);
}

.play-panel .modes button:hover,
.mode-btn:hover {
  background: rgba(122, 255, 153, 0.2);
  transform: translateY(-2px);
}

.play-panel .modes button.active,
.mode-btn.active {
  background: rgba(122, 255, 153, 0.3);
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--glow);
  font-weight: 500;
}

.mode-btn[data-mode="deathmatch"].active {
  background-color: #ff5555; 
  color: white;
  border-color: #ff3333;
}

.mode-btn[data-mode="deathmatch"]:hover {
  background-color: rgba(255, 85, 85, 0.2);
}

.profile-panel {
  text-align: center;
}

.profile-header {
  margin-bottom: 15px;
}

.skins-btn {
  background: var(--accent);
  color: var(--bg-color);
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s ease;
}

.skins-btn:hover {
  background: #90ff90;
  transform: scale(1.05);
}

.avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: #181f2a;
  margin: 0 auto 12px auto;
  box-shadow: 0 0 16px 4px #2de37e33;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  font-size: 2.5rem;
  color: #fff;
  transition: var(--transition);
}

.avatar.skin {
  background-size: cover !important;
  background-position: center !important;
  color: transparent !important;
}

.profile-panel:hover .avatar {
  transform: rotate(10deg) scale(1.05);
}

.nick-input {
  padding: 12px;
  font-size: 1.1rem;
  border-radius: 8px;
  margin-bottom: 15px;
  border: 1px solid rgba(122, 255, 153, 0.3);
  background: rgba(122, 255, 153, 0.1);
  color: white;
  width: 100%;
  transition: var(--transition);
  text-align: center;
}

.nick-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--glow);
}

.level {
  font-size: 1rem;
  color: var(--text-secondary);
  background: rgba(160, 216, 255, 0.1);
  padding: 4px 12px;
  border-radius: 12px;
}

.stats-panel {
  background: linear-gradient(135deg, rgba(15, 30, 50, 0.95), rgba(25, 40, 60, 0.9));
  border: 2px solid transparent;
  background-clip: padding-box;
  border-radius: 20px;
  padding: 25px 30px;
  color: var(--text-secondary);
  font-size: 1rem;
  backdrop-filter: blur(15px);
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(122, 255, 153, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  position: relative;
}

.stats-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    rgba(122, 255, 153, 0.1) 0%, 
    rgba(160, 216, 255, 0.05) 50%, 
    rgba(122, 255, 153, 0.1) 100%);
  border-radius: 18px;
  z-index: -1;
}

.stats-panel::after {
  content: "";
  position: absolute;
  top: -2px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, rgba(122, 255, 153, 0.9), rgba(76, 175, 80, 0.9));
  color: var(--bg-color);
  padding: 8px 20px;
  border-radius: 0 0 12px 12px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(122, 255, 153, 0.3);
}

.stats-panel:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.8),
    0 0 0 1px rgba(122, 255, 153, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 0 30px rgba(122, 255, 153, 0.2);
}

.stats-panel .stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 18px 0;
  padding: 12px 0;
  position: relative;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.stats-panel .stat-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.stats-panel .stat-item:first-child {
  margin-top: 25px;
}

.stats-panel .stat-item::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 20px;
  background: linear-gradient(to bottom, var(--accent), rgba(122, 255, 153, 0.3));
  border-radius: 2px;
  opacity: 0;
  transition: all 0.3s ease;
}

.stats-panel .stat-item:hover::before {
  opacity: 1;
  left: -5px;
}

.stat-label {
  color: rgba(160, 216, 255, 0.9);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.3px;
}

.stat-value {
  color: var(--accent);
  font-weight: bold;
  font-size: 1.4rem;
  text-shadow: 
    0 0 15px rgba(122, 255, 153, 0.5),
    0 0 30px rgba(122, 255, 153, 0.2);
  transition: all 0.4s ease;
  background: linear-gradient(45deg, var(--accent), #4CAF50);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats-panel .stat-item:hover .stat-value {
  transform: scale(1.1);
  text-shadow: 
    0 0 20px rgba(122, 255, 153, 0.8),
    0 0 40px rgba(122, 255, 153, 0.4);
}

.actions-panel {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.action-btn {
  padding: 12px 24px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  transition: all 0.3s ease;
  min-width: 140px;
}

.action-btn.secondary {
  background: rgba(100, 100, 100, 0.3);
  color: var(--text-color);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.action-btn.secondary:hover {
  background: rgba(100, 100, 100, 0.5);
  transform: translateY(-2px);
}

.action-btn.danger {
  background: rgba(255, 70, 70, 0.2);
  color: #ff7070;
  border: 1px solid rgba(255, 70, 70, 0.3);
}

.action-btn.danger:hover {
  background: rgba(255, 70, 70, 0.3);
  transform: translateY(-2px);
}

.scores-panel {
  display: none !important;
}

.modal {
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: var(--panel-color);
  margin: auto;
  padding: 30px;
  border-radius: 16px;
  width: 90%;
  max-width: 500px;
  position: relative;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from { opacity: 0; transform: translateY(-50px); }
  to { opacity: 1; transform: translateY(0); }
}

.close {
  color: var(--text-light);
  float: right;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  position: absolute;
  right: 20px;
  top: 15px;
}

.close:hover {
  color: var(--accent);
}

.modal h2 {
  color: var(--accent);
  margin-bottom: 1.5em;
  font-size: 1.8rem;
  text-align: center;
}

.modal h3 {
  color: var(--text-light);
  margin-bottom: 0.8em;
  font-size: 1.2rem;
}

.room-actions {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.action-group {
  text-align: center;
}

.divider {
  text-align: center;
  color: var(--text-secondary);
  font-weight: bold;
  position: relative;
}

.divider::before,
.divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40%;
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
}

.divider::before {
  left: 0;
}

.divider::after {
  right: 0;
}

#roomCodeInput {
  padding: 12px;
  font-size: 1.1rem;
  border-radius: 8px;
  margin-bottom: 15px;
  border: 1px solid rgba(122, 255, 153, 0.3);
  background: rgba(122, 255, 153, 0.1);
  color: white;
  width: 100%;
  max-width: 200px;
  transition: var(--transition);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2px;
}

#roomCodeInput:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--glow);
}

#createRoomBtn, #joinRoomBtn, #startGameBtn {
  padding: 12px 24px;
  font-size: 1.1rem;
  border-radius: 8px;
  background-color: var(--accent);
  color: var(--bg-color);
  font-weight: bold;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  margin-top: 10px;
}

#createRoomBtn:hover, #joinRoomBtn:hover, #startGameBtn:hover {
  background-color: #5df18b;
  box-shadow: var(--glow);
  transform: translateY(-2px);
}

.room-code-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin: 20px 0;
  padding: 15px;
  background: rgba(122, 255, 153, 0.1);
  border-radius: 8px;
  border: 1px solid rgba(122, 255, 153, 0.3);
}

#displayRoomCode {
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--accent);
  letter-spacing: 3px;
  text-shadow: var(--glow);
}

#copyCodeBtn {
  padding: 8px 16px;
  font-size: 0.9rem;
  border-radius: 6px;
  background: rgba(160, 216, 255, 0.2);
  color: var(--text-light);
  border: 1px solid rgba(160, 216, 255, 0.3);
  cursor: pointer;
  transition: var(--transition);
}

#copyCodeBtn:hover {
  background: rgba(160, 216, 255, 0.3);
  transform: translateY(-1px);
}

#skinModal {
  position: fixed;
  inset: 0;
  background: rgba(11,26,44,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  overflow: hidden;
}

#skinModal .modal-content {
  width: 900px;
  max-width: 98vw;
  min-height: 400px;
  background: #181f2a;
  border-radius: 18px;
  padding: 40px 32px 32px 32px;
  box-shadow: 0 8px 32px #000a;
  position: relative;
  text-align: center;
  overflow: visible;
}

#skinsList {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 15px;
  max-height: 250px;
  overflow-y: auto;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.2);
}

.skin-container {
  position: relative;
  display: inline-block;
  margin: 8px;
}

.skin-option {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.3s ease;
  object-fit: cover;
}

.skin-option:hover {
  transform: scale(1.1);
  border-color: rgba(122, 255, 153, 0.5);
}

.skin-option.selected {
  border-color: var(--accent);
  box-shadow: 0 0 15px rgba(122, 255, 153, 0.5);
  transform: scale(1.05);
}

.delete-skin-btn {
  position: absolute;
  top: -5px;
  right: -5px;
  background: #ff4444;
  color: white;
  border: none;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 10;
}

.delete-skin-btn:hover {
  background: #ff0000;
  transform: scale(1.1);
}

#skinsBtn,
#addCustomSkinBtn {
  padding: 10px 24px;
  font-size: 1.1rem;
  border-radius: 8px;
  background-color: var(--accent);
  color: var(--bg-color);
  font-weight: bold;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  margin-bottom: 10px;
  margin-top: 10px;
  box-shadow: 0 2px 8px rgba(122,255,153,0.08);
  display: inline-block;
}

#skinsBtn:hover,
#addCustomSkinBtn:hover {
  background-color: #5df18b;
  box-shadow: var(--glow);
  transform: translateY(-2px);
}

#customSkinInput {
  display: block;
  margin: 0 auto 10px auto;
  padding: 8px 0;
  font-size: 1rem;
  color: var(--text-light);
  background: none;
  border: none;
  outline: none;
}

#customSkinInput::-webkit-file-upload-button {
  padding: 8px 18px;
  border-radius: 8px;
  background-color: var(--accent);
  color: var(--bg-color);
  font-weight: bold;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  margin-right: 10px;
}

#customSkinInput:hover::-webkit-file-upload-button {
  background-color: #5df18b;
  box-shadow: var(--glow);
}

#customSkinInput::file-selector-button {
  padding: 8px 18px;
  border-radius: 8px;
  background-color: var(--accent);
  color: var(--bg-color);
  font-weight: bold;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  margin-right: 10px;
}

#customSkinInput:hover::file-selector-button {
  background-color: #5df18b;
  box-shadow: var(--glow);
}

#resetSkinBtn {
  padding: 5px 15px;
  font-size: 12px;
  background: var(--accent);
  color: var(--bg-color);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: var(--transition);
}

#resetSkinBtn:hover {
  background: #5df18b;
  transform: translateY(-1px);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.particle {
  position: absolute;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

#loginScreen {
  text-align: center;
  padding: 40px;
  background-color: var(--panel-color);
  border-radius: 16px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  max-width: 400px;
  width: 100%;
  margin: auto;
  animation: fadeIn 0.8s ease-out;
}

#loginScreen h1 {
  color: var(--accent);
  margin-bottom: 1.2em;
  letter-spacing: 1px;
  font-size: 2.4rem;
  text-shadow: var(--glow);
}

#nicknameInput {
  padding: 12px;
  font-size: 1.2rem;
  border-radius: 8px;
  margin-bottom: 20px;
  border: 1px solid rgba(122, 255, 153, 0.3);
  background: rgba(122, 255, 153, 0.1);
  color: white;
  width: 100%;
  max-width: 300px;
  transition: var(--transition);
  margin-right: 10px;
}

#nicknameInput:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--glow);
}

#loginBtn {
  padding: 10px 24px;
  font-size: 1.2rem;
  border-radius: 8px;
  background-color: var(--accent);
  color: var(--bg-color);
  font-weight: bold;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

#loginBtn:hover {
  background-color: #5df18b;
  box-shadow: var(--glow);
}

@media (max-width: 768px) {
  .wrapper {
    max-width: 100%;
    padding: 15px;
  }
  
  .header h1 {
    font-size: 2.5rem;
  }
  
  .header h2 {
    font-size: 1.1rem;
  }
  
  .side-panels {
    flex-direction: column;
    gap: 15px;
  }
  
  .panel {
    padding: 20px;
  }
  
  .actions-panel {
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }
  
  .action-btn {
    width: 100%;
    max-width: 300px;
  }

  .modal-content {
    width: 95%;
    padding: 20px;
  }

  .room-actions {
    gap: 20px;
  }

  .room-code-display {
    flex-direction: column;
    gap: 10px;
  }

  #displayRoomCode {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .wrapper {
    padding: 10px;
  }
  
  .header h1 {
    font-size: 2rem;
  }
  
  .main-content {
    gap: 15px;
  }
  
  .main-panel {
    max-width: 100%;
  }
  
  .side-panels {
    max-width: 100%;
  }
}