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

:root {
  --primary-bg: #0a0a0a;
  --secondary-bg: #1a1a1a;
  --accent-bg: #2a2a2a;
  --primary-color: #00ff88;
  --secondary-color: #ff0080;
  --accent-color: #00d4ff;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #666666;
  --border-color: #333333;
  --glass-bg: rgba(26, 26, 26, 0.8);
  --glass-border: rgba(255, 255, 255, 0.1);
  --neon-glow: 0 0 20px;
  --shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-neon: 0 0 20px rgba(0, 255, 136, 0.3);
}

body {
  font-family: 'Exo 2', sans-serif;
  background: var(--primary-bg);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(0, 255, 136, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 0, 128, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

.login-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.login-container {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 40px;
  width: 100%;
  max-width: 450px;
  box-shadow: var(--shadow-dark), var(--shadow-neon);
  position: relative;
  overflow: hidden;
}

.login-container::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color), var(--accent-color));
  border-radius: 20px;
  z-index: -1;
  opacity: 0.3;
  animation: borderGlow 3s ease-in-out infinite alternate;
}

@keyframes borderGlow {
  0% { opacity: 0.3; }
  100% { opacity: 0.6; }
}

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

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 15px;
}

.logo i {
  font-size: 3rem;
  color: var(--primary-color);
  filter: drop-shadow(var(--neon-glow) var(--primary-color));
}

.logo h1 {
  font-family: 'Orbitron', monospace;
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: var(--neon-glow) var(--primary-color);
}

.tagline {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.login-tabs {
  display: flex;
  margin-bottom: 25px;
  background: var(--accent-bg);
  border-radius: 12px;
  padding: 4px;
}

.tab-btn {
  flex: 1;
  padding: 12px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.tab-btn.active {
  background: var(--primary-color);
  color: var(--primary-bg);
  box-shadow: var(--neon-glow) var(--primary-color);
}

.login-form {
  display: none;
}

.login-form.active {
  display: block;
}

.input-group {
  position: relative;
  margin-bottom: 20px;
}

.input-group i {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  z-index: 2;
}

.input-group input {
  width: 100%;
  padding: 15px 15px 15px 50px;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.input-group input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.2);
  outline: none;
}

.btn-primary {
  width: 100%;
  padding: 15px;
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  border: none;
  border-radius: 12px;
  color: var(--primary-bg);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-neon);
}

.social-login {
  text-align: center;
}

.social-login p {
  color: var(--text-muted);
  margin-bottom: 15px;
  position: relative;
}

.social-login p::before,
.social-login p::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40%;
  height: 1px;
  background: var(--border-color);
}

.social-login p::before { left: 0; }
.social-login p::after { right: 0; }

.social-buttons {
  display: flex;
  gap: 10px;
}

.btn-social {
  flex: 1;
  padding: 12px;
  border: 1px solid var(--border-color);
  background: var(--accent-bg);
  color: var(--text-primary);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
}

.btn-social.google:hover {
  border-color: #4285f4;
  background: rgba(66, 133, 244, 0.1);
}

.btn-social.linkedin:hover {
  border-color: #0077b5;
  background: rgba(0, 119, 181, 0.1);
}

.login-bg-effects {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  overflow: hidden;
}

.matrix-effect {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    linear-gradient(90deg, transparent 98%, rgba(0, 255, 136, 0.03) 100%),
    linear-gradient(0deg, transparent 98%, rgba(0, 255, 136, 0.03) 100%);
  background-size: 20px 20px;
  animation: matrix 20s linear infinite;
}

@keyframes matrix {
  0% { transform: translateY(0); }
  100% { transform: translateY(-20px); }
}

.app-container {
  display: grid;
  grid-template-areas:
    "header header"
    "sidebar main";
  grid-template-rows: 80px 1fr;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

.app-header {
  grid-area: header;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 20px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left .logo-small {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-left .logo-small i {
  font-size: 1.8rem;
  color: var(--primary-color);
}

.header-left .logo-small span {
  font-family: 'Orbitron', monospace;
  font-weight: 700;
  font-size: 1.2rem;
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-center {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 0 20px;
}

.user-progress {
  width: 100%;
  max-width: 400px;
}

.progress-bar {
  background: var(--accent-bg);
  border-radius: 12px;
  height: 20px;
  position: relative;
  margin-bottom: 5px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.progress-fill {
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  height: 100%;
  border-radius: 12px;
  transition: width 0.8s ease;
  position: relative;
  box-shadow: inset 0 0 10px rgba(0, 255, 136, 0.3);
}

.level-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.level {
  color: var(--primary-color);
  font-weight: 700;
}

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

.user-stats {
  display: flex;
  gap: 15px;
  font-weight: 600;
}

.coins {
  color: var(--accent-color);
}

.streak {
  color: var(--secondary-color);
}

.user-avatar {
  position: relative;
  cursor: pointer;
}

.user-avatar img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid var(--primary-color);
  transition: all 0.3s ease;
}

.user-avatar:hover img {
  box-shadow: var(--neon-glow) var(--primary-color);
}

.user-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 10px;
  min-width: 180px;
  display: none;
  z-index: 1000;
  box-shadow: var(--shadow-dark);
}

.user-menu.show {
  display: block;
}

.user-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 15px;
  text-decoration: none;
  color: var(--text-primary);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.user-menu a:hover {
  background: var(--accent-bg);
  color: var(--primary-color);
}

.sidebar {
  grid-area: sidebar;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--border-color);
  padding: 20px;
}

.nav-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 20px;
  background: transparent;
  border: none;
  border-radius: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
  position: relative;
  width: 100%;
  text-align: left;
}

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

.nav-item.active {
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  color: var(--primary-bg);
  box-shadow: var(--shadow-neon);
}

.nav-item i {
  font-size: 1.2rem;
  width: 20px;
  text-align: center;
}

.notification-badge {
  background: var(--secondary-color);
  color: white;
  border-radius: 50%;
  padding: 2px 6px;
  font-size: 0.7rem;
  font-weight: 700;
  margin-left: auto;
  min-width: 20px;
  text-align: center;
  display: none;
}

.notification-badge:not(:empty) {
  display: block;
}

.main-content {
  grid-area: main;
  padding: 30px;
  overflow-y: auto;
}

.content-section {
  display: none;
}

.content-section.active {
  display: block;
}

.section-header {
  margin-bottom: 30px;
}

.section-header h1 {
  font-family: 'Orbitron', monospace;
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 15px;
}

.section-header h1 i {
  color: var(--primary-color);
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 25px;
}

.dashboard-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 25px;
  box-shadow: var(--shadow-dark);
  transition: all 0.3s ease;
}

.dashboard-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-dark), var(--shadow-neon);
}

.dashboard-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  font-size: 1.3rem;
  color: var(--primary-color);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  font-family: 'Orbitron', monospace;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 5px;
}

.activity-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.activity-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px;
  background: var(--accent-bg);
  border-radius: 12px;
  border-left: 4px solid var(--primary-color);
}

.activity-item i {
  color: var(--primary-color);
  font-size: 1.2rem;
}

.activity-item time {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 15px;
}

.achievement-item {
  text-align: center;
  padding: 15px;
  background: var(--accent-bg);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.achievement-item:hover {
  background: var(--border-color);
  transform: translateY(-3px);
}

.achievement-item i {
  font-size: 2rem;
  color: var(--accent-color);
  margin-bottom: 8px;
}

.actions-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.action-btn {
  padding: 15px;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
}

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

.world-map {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.stage {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 25px;
  box-shadow: var(--shadow-dark);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.stage::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color), var(--accent-color));
  border-radius: 22px;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.stage:hover::before {
  opacity: 0.3;
}

.stage:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-dark), var(--shadow-neon);
}

.stage.completed {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, var(--glass-bg), rgba(0, 255, 136, 0.1));
}

.stage.locked {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(70%);
}

.stage-header {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}

.stage-icon {
  font-size: 2.5rem;
  margin-right: 15px;
  filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.3));
}

.stage-info h3 {
  font-family: 'Orbitron', monospace;
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 5px;
}

.stage-level {
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  color: var(--primary-bg);
  padding: 5px 12px;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 700;
}

.stage-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 15px;
}

.skills-list {
  list-style: none;
  margin-bottom: 15px;
}

.skills-list li {
  background: var(--accent-bg);
  margin: 5px 0;
  padding: 10px 15px;
  border-radius: 8px;
  border-left: 4px solid var(--primary-color);
  font-size: 0.9rem;
  transition: all 0.2s ease;
  cursor: pointer;
}

.skills-list li:hover {
  background: var(--border-color);
  transform: translateX(5px);
}

.skill-item.completed-skill {
  text-decoration: line-through;
  color: var(--text-muted);
  opacity: 0.7;
}

.stage-progress {
  background: var(--accent-bg);
  border-radius: 10px;
  height: 8px;
  overflow: hidden;
  margin-bottom: 10px;
}

.stage-progress-fill {
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  height: 100%;
  border-radius: 10px;
  transition: width 0.5s ease;
}

.stage-status {
  text-align: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.status-locked { color: var(--text-muted); }
.status-available { color: var(--accent-color); }
.status-completed { color: var(--primary-color); }

.chat-container {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  height: 600px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

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

.online-users {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

.online-indicator {
  color: var(--primary-color);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.chat-actions button {
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 8px 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.chat-actions button:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.chat-message {
  padding: 12px 16px;
  border-radius: 12px;
  max-width: 70%;
  word-wrap: break-word;
}

.chat-message.own {
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  color: var(--primary-bg);
  align-self: flex-end;
}

.chat-message.other {
  background: var(--accent-bg);
  color: var(--text-primary);
  align-self: flex-start;
}

.message-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
  font-size: 0.8rem;
  opacity: 0.8;
}

.system-message {
  text-align: center;
  color: var(--text-muted);
  font-style: italic;
  padding: 10px;
  background: var(--accent-bg);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.chat-input-container {
  padding: 20px;
  border-top: 1px solid var(--border-color);
}

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

.chat-input input {
  flex: 1;
  padding: 12px 16px;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1rem;
}

.chat-input input:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.2);
}

.chat-input button {
  padding: 12px 16px;
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  border: none;
  border-radius: 12px;
  color: var(--primary-bg);
  cursor: pointer;
  transition: all 0.3s ease;
}

.chat-input button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-neon);
}

.typing-indicator {
  color: var(--text-muted);
  font-style: italic;
  padding: 5px 0;
  font-size: 0.9rem;
}

.notes-container {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 25px;
  height: 700px;
}

.notes-sidebar {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.notes-actions {
  margin-bottom: 20px;
}

.notes-actions button {
  width: 100%;
  margin-bottom: 15px;
}

.notes-actions input {
  width: 100%;
  padding: 12px 16px;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.notes-list {
  flex: 1;
  overflow-y: auto;
}

.note-item {
  padding: 15px;
  margin-bottom: 10px;
  background: var(--accent-bg);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  border-left: 4px solid transparent;
}

.note-item:hover {
  background: var(--border-color);
  border-left-color: var(--primary-color);
}

.note-item.active {
  background: var(--border-color);
  border-left-color: var(--primary-color);
}

.note-item h4 {
  margin-bottom: 5px;
  color: var(--text-primary);
  font-size: 1rem;
}

.note-item p {
  color: var(--text-muted);
  font-size: 0.8rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.note-item time {
  color: var(--text-muted);
  font-size: 0.7rem;
}

.notes-editor {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.editor-header {
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 15px;
}

.note-title-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.3rem;
  font-weight: 700;
  outline: none;
}

.editor-actions {
  display: flex;
  gap: 10px;
}

.editor-actions button {
  padding: 8px 12px;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.editor-actions button:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.editor-actions .delete-btn:hover {
  color: var(--secondary-color);
  border-color: var(--secondary-color);
}

.editor-toolbar {
  padding: 15px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: 10px;
}

.editor-toolbar button {
  padding: 8px 10px;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.editor-toolbar button:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.editor-content {
  flex: 1;
  padding: 20px;
}

.editor-content textarea {
  width: 100%;
  height: 100%;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.6;
  resize: none;
  outline: none;
  font-family: inherit;
}

.note-metadata {
  padding: 15px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.evaluation-container {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
}

.evaluation-tabs {
  display: flex;
  background: var(--accent-bg);
}

.eval-tab {
  flex: 1;
  padding: 20px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
  font-weight: 600;
}

.eval-tab.active {
  background: var(--glass-bg);
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
}

.eval-content {
  padding: 30px;
}

.eval-tab-content {
  display: none;
}

.eval-tab-content.active {
  display: block;
}

.progress-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  margin-bottom: 30px;
}

.progress-card {
  background: var(--accent-bg);
  border-radius: 15px;
  padding: 25px;
  text-align: center;
}

.progress-card h3 {
  margin-bottom: 20px;
  color: var(--primary-color);
}

.circular-progress {
  position: relative;
  display: inline-block;
}

.progress-ring {
  transform: rotate(-90deg);
}

.progress-ring-circle {
  stroke-dasharray: 327;
  stroke-dashoffset: 82;
  transition: stroke-dashoffset 0.5s ease;
}

.progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.skills-progress {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.skill-bar {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-bar label {
  color: var(--text-primary);
  font-weight: 600;
}

.bar {
  height: 12px;
  background: var(--primary-bg);
  border-radius: 6px;
  overflow: hidden;
}

.bar .fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: 6px;
  transition: width 0.5s ease;
}

.time-stats {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.time-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px;
  background: var(--primary-bg);
  border-radius: 10px;
}

.time-item i {
  color: var(--primary-color);
  font-size: 1.5rem;
}

.time-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  display: block;
}

.time-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.feedback-form, .suggestions-form {
  max-width: 600px;
  margin-bottom: 30px;
}

.feedback-form h3, .suggestions-form h3 {
  margin-bottom: 20px;
  color: var(--primary-color);
}

.rating-section {
  margin-bottom: 20px;
}

.rating-section label {
  display: block;
  margin-bottom: 10px;
  color: var(--text-primary);
  font-weight: 600;
}

.star-rating {
  display: flex;
  gap: 5px;
  margin-bottom: 20px;
}

.star-rating i {
  font-size: 2rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s ease;
}

.star-rating i:hover,
.star-rating i.active {
  color: var(--accent-color);
}

.feedback-input, .suggestion-input {
  margin-bottom: 25px;
}

.feedback-input label, .suggestion-input label {
  display: block;
  margin-bottom: 10px;
  color: var(--text-primary);
  font-weight: 600;
}

.feedback-input textarea, .suggestion-input textarea, .suggestion-input input {
  width: 100%;
  padding: 15px;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1rem;
  resize: vertical;
  min-height: 120px;
}

.feedback-input textarea:focus, .suggestion-input textarea:focus, .suggestion-input input:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.2);
}

.suggestion-categories {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.category-btn {
  padding: 10px 20px;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.category-btn.active,
.category-btn:hover {
  background: var(--primary-color);
  color: var(--primary-bg);
  border-color: var(--primary-color);
}

.suggestions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.suggestion-card {
  background: var(--accent-bg);
  border-radius: 15px;
  padding: 20px;
  transition: all 0.3s ease;
}

.suggestion-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-dark);
}

.suggestion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.suggestion-category {
  padding: 5px 12px;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 600;
}

.suggestion-category.feature {
  background: var(--primary-color);
  color: var(--primary-bg);
}

.suggestion-votes {
  display: flex;
  align-items: center;
  gap: 8px;
}

.vote-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 5px 8px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.vote-btn:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.suggestion-card h4 {
  margin-bottom: 10px;
  color: var(--text-primary);
}

.suggestion-card p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 15px;
}

.suggestion-meta {
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.profile-container {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 30px;
}

.profile-sidebar {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 30px;
  height: fit-content;
}

.profile-avatar-section {
  text-align: center;
  margin-bottom: 30px;
}

.profile-avatar {
  position: relative;
  display: inline-block;
  margin-bottom: 20px;
}

.profile-avatar img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 4px solid var(--primary-color);
  box-shadow: var(--neon-glow) var(--primary-color);
}

.avatar-edit-btn {
  position: absolute;
  bottom: 0;
  right: 0;
  background: var(--primary-color);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  color: var(--primary-bg);
  cursor: pointer;
  transition: all 0.3s ease;
}

.avatar-edit-btn:hover {
  transform: scale(1.1);
}

.profile-sidebar h2 {
  margin-bottom: 10px;
  color: var(--text-primary);
}

.profile-level {
  color: var(--primary-color);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.profile-stats {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.profile-stats .stat {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px;
  background: var(--accent-bg);
  border-radius: 12px;
}

.profile-stats .stat i {
  color: var(--primary-color);
  font-size: 1.5rem;
}

.profile-main {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
}

.profile-tabs {
  display: flex;
  background: var(--accent-bg);
}

.profile-tab {
  flex: 1;
  padding: 20px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
  font-weight: 600;
}

.profile-tab.active {
  background: var(--glass-bg);
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
}

.profile-content {
  padding: 30px;
}

.profile-tab-content {
  display: none;
}

.profile-tab-content.active {
  display: block;
}

.info-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  color: var(--text-primary);
  font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 12px 15px;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.2);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.btn-secondary {
  padding: 10px 20px;
  background: var(--accent-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.section-header-small {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.section-header-small h3 {
  color: var(--primary-color);
  font-size: 1.3rem;
}

.education-list,
.courses-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 30px;
}

.education-item,
.course-item {
  background: var(--accent-bg);
  padding: 20px;
  border-radius: 12px;
  border-left: 4px solid var(--primary-color);
}

.education-item h4,
.course-item h4 {
  color: var(--text-primary);
  margin-bottom: 5px;
}

.education-item p,
.course-item p {
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.settings-form {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.setting-group label {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.1rem;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.checkbox-label:hover {
  color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary-color);
}

.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}

.modal-content {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  margin: 5% auto;
  padding: 30px;
  width: 90%;
  max-width: 600px;
  position: relative;
  box-shadow: var(--shadow-dark), var(--shadow-neon);
}

.close {
  color: var(--text-muted);
  float: right;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.3s ease;
}

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

.modal-actions {
  text-align: center;
  margin-top: 25px;
}

.btn-complete {
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  color: var(--primary-bg);
  border: none;
  padding: 15px 30px;
  border-radius: 25px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: 'Orbitron', monospace;
}

.btn-complete:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-neon);
}

.btn-complete:disabled {
  background: var(--text-muted);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.achievement-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: var(--primary-bg);
  padding: 25px;
  border-radius: 20px;
  box-shadow: var(--shadow-dark), var(--shadow-neon);
  z-index: 2001;
  text-align: center;
  transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  border: 4px solid white;
}

.achievement-popup.show {
  transform: translate(-50%, -50%) scale(1);
}

.achievement-content h3 {
  font-family: 'Orbitron', monospace;
  font-size: 1.2rem;
  margin-bottom: 10px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.achievement-content p {
  font-size: 1rem;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.stage.completed {
  animation: float 3s ease-in-out infinite;
}

.stage.completed::after {
  content: "✨";
  position: absolute;
  top: -10px;
  right: -10px;
  font-size: 1.5rem;
  animation: sparkle 2s infinite;
}

@keyframes sparkle {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--accent-bg);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--primary-color), var(--accent-color));
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(var(--accent-color), var(--primary-color));
}

@media (max-width: 1200px) {
  .app-container {
    grid-template-columns: 250px 1fr;
  }
}

@media (max-width: 968px) {
  .app-container {
    grid-template-columns: 1fr;
    grid-template-rows: 80px auto 1fr;
    grid-template-areas:
      "header"
      "sidebar"
      "main";
  }
  
  .sidebar {
    padding: 10px 20px;
  }
  
  .nav-items {
    flex-direction: row;
    justify-content: space-around;
    overflow-x: auto;
  }
  
  .nav-item {
    min-width: 120px;
    text-align: center;
    flex-direction: column;
    gap: 5px;
    padding: 10px 15px;
  }
  
  .nav-item span {
    font-size: 0.8rem;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .notes-container {
    grid-template-columns: 1fr;
    height: auto;
  }
  
  .profile-container {
    grid-template-columns: 1fr;
  }

  .progress-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-center {
    display: none;
  }
  
  .main-content {
    padding: 20px;
  }
  
  .section-header h1 {
    font-size: 1.8rem;
  }
  
  .world-map {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .stage {
    padding: 20px;
  }
  
  .chat-container {
    height: 500px;
  }
  
  .modal-content {
    margin: 10% auto;
    padding: 20px;
    width: 95%;
  }
  
  .login-container {
    padding: 30px;
    margin: 20px;
  }
  
  .social-buttons {
    flex-direction: column;
  }
  
  .info-form {
    grid-template-columns: 1fr;
  }
}