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

:root {
  --primary-color: #14b8a6; /* Hijau Tosca Terang */
  --primary-dark: #0f766e;  /* Hijau Tosca Gelap untuk efek Hover */
  --secondary-color: #8b5cf6; /* Ungu Modern */
  
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  
  /* Latar belakang tetap gelap (Slate/Navy Tua) */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --border-color: #475569;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

.container {
  width: 100%;
  height: 100vh;
  overflow: hidden;
  position: fixed;
  top: 0;
  left: 0;
}

/* ========== AUTH CONTAINER ========== */
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
  z-index: 1000;
}

.auth-container.hidden {
  display: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.auth-container.active {
  display: flex;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.auth-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 25px rgba(0, 0, 0, 0.5);
}

.auth-box h1 {
  font-size: 28px;
  margin-bottom: 10px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-box .subtitle {
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-size: 14px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.auth-form.hidden {
  display: none;
}

.auth-form h2 {
  font-size: 20px;
  margin-bottom: 10px;
}

.auth-form input {
  padding: 12px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
  transition: border-color 0.3s;
}

.auth-form input:focus {
  outline: none;
  border-color: var(--primary-color);
  background-color: rgba(20, 184, 166, 0.1); 
}

.toggle-text {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 10px;
}

.toggle-text a {
  color: var(--primary-color);
  text-decoration: none;
  cursor: pointer;
  font-weight: 600;
}

.toggle-text a:hover {
  text-decoration: underline;
}

/* ========== APP CONTAINER ========== */
.app-container {
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
  z-index: 1;
  pointer-events: none;
}

.app-container.active {
  display: flex;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.header h1 {
  font-size: 24px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

#user-info {
  color: var(--text-secondary);
}

.main-content {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ========== SIDEBAR ========== */
.sidebar {
  width: 250px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-section h3 {
  font-size: 14px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 5px;
  font-weight: 600;
}

.users-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 300px;
  overflow-y: auto;
}

.user-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background-color: var(--bg-tertiary);
  border-radius: 6px;
  font-size: 13px;
  transition: background-color 0.3s;
}

.user-item:hover {
  background-color: rgba(20, 184, 166, 0.2); 
}

.user-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--danger-color);
}

.user-status.online {
  background-color: var(--success-color);
}

.nav-btn {
  padding: 10px 15px;
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s;
  font-weight: 500;
}

.nav-btn:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-btn.active {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

.empty-state {
  color: var(--text-secondary);
  font-size: 13px;
  text-align: center;
  padding: 10px;
  font-style: italic;
}

/* ========== CONTENT AREA ========== */
.content-area {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.view.hidden {
  display: none;
}

/* ========== LOBBY VIEW ========== */
.lobby-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.chat-section,
.game-setup-section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 180px);
}

.chat-section h2,
.game-setup-section h2 {
  margin-bottom: 15px;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  margin-bottom: 15px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-right: 10px;
}

.chat-message {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px;
  background-color: var(--bg-tertiary);
  border-radius: 6px;
  border-left: 3px solid var(--primary-color);
}

.chat-message .username {
  font-weight: 600;
  color: var(--primary-color);
  font-size: 12px;
}

.chat-message .message {
  color: var(--text-primary);
  font-size: 14px;
  word-wrap: break-word;
}

.system-message {
  text-align: center;
  color: var(--text-secondary);
  font-size: 12px;
  padding: 10px;
  font-style: italic;
}

.chat-input-form {
  display: flex;
  gap: 10px;
}

.chat-input-form input {
  flex: 1;
  padding: 10px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
}

.chat-input-form input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.game-setup-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  flex: 1;
}

.game-setup-form label {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-secondary);
}

.game-setup-form input,
.game-setup-form select {
  padding: 10px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
}

.game-setup-form input:focus,
.game-setup-form select:focus {
  outline: none;
  border-color: var(--primary-color);
}

.game-setup-form select {
  cursor: pointer;
}

/* ========== GAME VIEW ========== */
.game-section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  height: calc(100vh - 120px);
  display: flex;
  flex-direction: column;
}

.game-section.hidden {
  display: none;
}

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
}

.game-header h2 {
  margin: 0;
}

.game-header p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* ========== TIMER DISPLAY ========== */
.game-timer-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 120px;
}

.timer-display {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  box-shadow: 0 0 30px rgba(20, 184, 166, 0.5);
  animation: pulse-timer 1s infinite;
}

.timer-display #timer-text {
  font-size: 36px;
  font-weight: bold;
  color: white;
  font-family: 'Courier New', monospace;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.timer-display.warning {
  background: linear-gradient(135deg, var(--warning-color), var(--danger-color));
  box-shadow: 0 0 30px rgba(239, 68, 68, 0.5);
}

@keyframes pulse-timer {
  0%, 100% {
    box-shadow: 0 0 30px rgba(20, 184, 166, 0.5);
  }
  50% {
    box-shadow: 0 0 50px rgba(20, 184, 166, 0.8);
  }
}

@keyframes pulse-warning {
  0%, 100% {
    box-shadow: 0 0 30px rgba(239, 68, 68, 0.5);
  }
  50% {
    box-shadow: 0 0 50px rgba(239, 68, 68, 0.8);
  }
}

.timer-display.warning {
  animation: pulse-warning 0.5s infinite;
}

.game-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 15px;
  overflow: hidden;
}

.lyrics-display {
  flex: 1;
  display: flex;
  align-items: center;
  white-space: nowrap; 
  overflow-x: hidden; 
  overflow-y: hidden;
  scroll-behavior: smooth; 
  font-size: 40px; 
  color: var(--text-primary);
}

.active-char {
  border-bottom: 3px solid var(--primary-color);
  padding-bottom: 2px;
}

.typed-char {
  color: var(--success-color);
  font-weight: 600;
}

.wrong-char {
  color: var(--danger-color);
  font-weight: 600;
}

.typing-input {
  height: 120px;
  flex-shrink: 0;
  padding: 25px;
  background-color: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: 'Courier New', monospace;
  font-size: 30px; 
  resize: none;
  transition: border-color 0.3s;
}

.typing-input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.typing-input:disabled {
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: not-allowed;
}

.players-progress {
  max-height: 200px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.player-progress-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

.progress-header .player-name {
  font-weight: 600;
  color: var(--primary-color);
}

.progress-header .player-stats {
  color: var(--text-secondary);
}

.progress-bar-bg {
  width: 100%;
  height: 20px;
  background-color: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 4px;
  transition: width 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 8px;
  color: white;
  font-size: 11px;
  font-weight: 600;
}

.players-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 300px;
  overflow-y: auto;
  margin-bottom: 15px;
}

.player-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  background-color: var(--bg-tertiary);
  border-radius: 6px;
  border-left: 3px solid var(--primary-color);
}

.player-item .player-name {
  font-weight: 600;
  color: var(--primary-color);
}

.player-item .player-score {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ========== LEADERBOARD ========== */
.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}

.leaderboard-table thead {
  background-color: var(--bg-tertiary);
  border-bottom: 2px solid var(--border-color);
}

.leaderboard-table th {
  padding: 12px;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 13px;
  text-transform: uppercase;
}

.leaderboard-table td {
  padding: 12px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.leaderboard-table tbody tr:hover {
  background-color: var(--bg-tertiary);
}

/* ========== BUTTONS ========== */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s;
  display: inline-block;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(20, 184, 166, 0.4); 
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--border-color);
}

.btn-small {
  padding: 8px 16px;
  font-size: 13px;
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.9);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.modal-box {
  background: var(--bg-secondary);
  border: 2px solid var(--primary-color);
  border-radius: 20px;
  padding: 40px;
  width: 90%;
  max-width: 450px;
  text-align: center;
  box-shadow: 0 0 50px rgba(139, 92, 246, 0.4); 
}

.modal-icon {
  font-size: 60px;
  margin-bottom: 20px;
}

.modal-box h2 {
  font-size: 32px;
  margin-bottom: 15px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.modal-box p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 30px;
  line-height: 1.5;
}

.modal-box .btn {
  width: 100%;
  padding: 15px;
  font-size: 16px;
}

.modal-overlay.hidden {
  display: none;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .lobby-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    width: 200px;
  }
}

@media (max-width: 768px) {
  .main-content {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    flex-direction: row;
    height: auto;
    padding: 10px 20px;
  }

  .sidebar-section {
    flex-direction: row;
    align-items: center;
  }

  .users-list {
    flex-direction: row;
    max-height: none;
    overflow-x: auto;
  }
}