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

body {
  font-family: 'Inter', system-ui, sans-serif;
  height: 100vh;
  overflow: hidden;
  background: #0a0a0f;
  color: #e0e0e0;
  user-select: none;
}

/* Boot Screen */
#bootScreen {
  position: fixed;
  inset: 0;
  background: #0a0a0f;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.boot-content {
  text-align: center;
}

.boot-logo {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 20px;
}

.boot-title {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.boot-subtitle {
  font-size: 13px;
  color: #666;
  margin-bottom: 32px;
}

.boot-loader {
  width: 200px;
  height: 3px;
  background: #1a1a2e;
  border-radius: 2px;
  margin: 0 auto 16px;
  overflow: hidden;
}

.boot-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  border-radius: 2px;
  animation: bootLoad 2s ease-in-out forwards;
}

@keyframes bootLoad {
  0% { width: 0%; }
  40% { width: 60%; }
  80% { width: 85%; }
  100% { width: 100%; }
}

.boot-status {
  font-size: 12px;
  color: #555;
  font-family: 'JetBrains Mono', monospace;
}

/* Welcome Screen */
#welcomeScreen {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #0a0a1a 0%, #1a1035 50%, #0d1b2a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
}

.welcome-content {
  text-align: center;
  max-width: 500px;
  padding: 40px;
}

.welcome-content h1 {
  font-size: 42px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.accent {
  background: linear-gradient(135deg, #6366f1, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.welcome-desc {
  font-size: 16px;
  color: #888;
  margin-bottom: 32px;
}

.welcome-info {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
}

.welcome-info p {
  font-size: 14px;
  color: #aaa;
  margin-bottom: 6px;
}

.welcome-info p:last-child {
  margin-bottom: 0;
}

.welcome-links {
  margin-bottom: 32px;
}

.welcome-links a {
  color: #8b5cf6;
  text-decoration: none;
  font-size: 14px;
  padding: 6px 16px;
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 8px;
  transition: all 0.2s;
}

.welcome-links a:hover {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.5);
}

.enter-btn {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  border: none;
  padding: 14px 40px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Inter', sans-serif;
}

.enter-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

/* Desktop */
#desktop {
  position: fixed;
  inset: 0;
  background-image: url('wallpaper.svg');
  background-size: cover;
  background-position: center;
  background-color: #0d1117;
}

/* Top Bar */
#topBar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: rgba(10, 10, 20, 0.75);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 10000;
}

.topbar-left p, .topbar-right p {
  font-size: 13px;
  font-weight: 500;
  color: #d0d0d0;
}

#osName:hover {
  color: #8b5cf6;
}

#timeDisplay {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}

/* Desktop Apps */
#desktopApps {
  padding: 52px 24px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-content: flex-start;
  width: 120px;
}

.app-icon {
  width: 80px;
  text-align: center;
  padding: 10px 8px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.15s;
}

.app-icon:hover {
  background: rgba(255, 255, 255, 0.08);
}

.app-icon.selected {
  background: rgba(139, 92, 246, 0.15);
  outline: 1px solid rgba(139, 92, 246, 0.3);
}

.icon-img {
  font-size: 36px;
  margin-bottom: 4px;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.5));
}

.app-icon p {
  font-size: 11px;
  color: #fff;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
}

/* Windows */
.window {
  position: absolute;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(18, 18, 28, 0.92);
  backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  min-width: 280px;
}

.windowheader {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  cursor: grab;
}

.windowheader:active {
  cursor: grabbing;
}

.closebutton {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: #ff5f57;
  border: 1px solid rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: opacity 0.15s;
  flex-shrink: 0;
}

.closebutton:hover {
  opacity: 0.8;
}

.headertext {
  flex: 1;
  text-align: center;
  font-size: 13px;
  font-weight: 500;
  color: #bbb;
}

.header-spacer {
  width: 13px;
  flex-shrink: 0;
}

.window-body {
  padding: 20px;
  overflow-y: auto;
  color: #ccc;
  font-size: 14px;
  line-height: 1.6;
}

/* Welcome Window */
.welcome-window-body {
  width: 380px;
}

.welcome-window-body h2 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 12px;
}

/* Notes App */
.notes-body {
  display: flex;
  padding: 0;
  width: 520px;
  height: 380px;
}

.notes-sidebar {
  width: 180px;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  overflow-y: auto;
  flex-shrink: 0;
}

.note-item {
  padding: 12px 14px;
  cursor: pointer;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: background 0.15s;
}

.note-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.note-item.active {
  background: rgba(139, 92, 246, 0.12);
}

.note-item-title {
  font-size: 13px;
  font-weight: 500;
  color: #ddd;
  margin-bottom: 2px;
}

.note-item-date {
  font-size: 11px;
  color: #666;
}

.notes-content {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
}

.notes-content h3 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 8px;
}

.notes-content p {
  margin-bottom: 8px;
}

.notes-placeholder {
  color: #555;
  font-style: italic;
  text-align: center;
  padding-top: 40px;
}

/* Terminal App */
.terminal-body {
  padding: 0;
  width: 440px;
  height: 320px;
  display: flex;
  flex-direction: column;
  background: #0d0d14;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}

.terminal-output {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
}

.terminal-line {
  margin-bottom: 2px;
  color: #a0a0b0;
  word-break: break-all;
}

.terminal-line.cmd {
  color: #8b5cf6;
}

.terminal-line.result {
  color: #6ee7b7;
}

.terminal-line.error {
  color: #f87171;
}

.terminal-input-row {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(0, 0, 0, 0.3);
}

.terminal-prompt {
  color: #8b5cf6;
  margin-right: 8px;
  white-space: nowrap;
}

.terminal-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: #e0e0e0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}

/* Music App */
.music-body {
  width: 340px;
  text-align: center;
}

.music-now-playing {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  text-align: left;
}

.music-disc {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1a1a2e, #2d1b69);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}

.music-disc.spinning {
  animation: spin 3s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.music-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 2px;
}

.music-artist {
  font-size: 12px;
  color: #888;
}

.music-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
}

.music-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: #ccc;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  font-family: inherit;
}

.music-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.music-play {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border: none;
  font-size: 18px;
  color: #fff;
}

.music-play:hover {
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.music-playlist {
  text-align: left;
  max-height: 160px;
  overflow-y: auto;
}

.playlist-item {
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  transition: background 0.15s;
}

.playlist-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.playlist-item.active {
  background: rgba(139, 92, 246, 0.12);
  color: #a78bfa;
}

.playlist-item-title {
  color: #ccc;
}

.playlist-item-duration {
  color: #666;
  font-size: 11px;
}

/* About App */
.about-body {
  width: 340px;
}

.about-card {
  text-align: center;
  margin-bottom: 24px;
}

.about-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 12px;
}

.about-card h2 {
  font-size: 20px;
  color: #fff;
  margin-bottom: 4px;
}

.about-role {
  font-size: 13px;
  color: #888;
}

.about-details {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 4px 0;
}

.about-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.about-item:last-child {
  border-bottom: none;
}

.about-label {
  font-size: 13px;
  color: #888;
}

.about-value {
  font-size: 13px;
  color: #ddd;
}

.about-link {
  font-size: 13px;
  color: #8b5cf6;
  text-decoration: none;
}

.about-link:hover {
  text-decoration: underline;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}