/* ==================================================
   CSS Variables & Theme Palettes
================================================== */
:root {
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Inter', sans-serif;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 4px;
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* VS Code Dark Theme (Default) */
body.theme-vscode {
  --bg-main: #121212;
  --win-bg: #1E1E1E;
  --titlebar-bg: #252526;
  --tabs-bg: #181818;
  --tab-active-bg: #1E1E1E;
  --border-color: #333333;
  --text-main: #CCCCCC;
  --text-muted: #858585;
  --prompt-color: #4EC9B0;
  --accent-color: #007ACC;
  --highlight-color: #DCDCAA;
  --error-color: #F44747;
  --success-color: #6A9955;
  --cursor-color: #AEAFAD;
}

/* Monokai Theme */
body.theme-monokai {
  --bg-main: #191A17;
  --win-bg: #272822;
  --titlebar-bg: #34352F;
  --tabs-bg: #1E1F1C;
  --tab-active-bg: #272822;
  --border-color: #49483E;
  --text-main: #F8F8F2;
  --text-muted: #75715E;
  --prompt-color: #A6E22E;
  --accent-color: #FD971F;
  --highlight-color: #E6DB74;
  --error-color: #F92672;
  --success-color: #A6E22E;
  --cursor-color: #F8F8F0;
}

/* Dracula Theme */
body.theme-dracula {
  --bg-main: #1E1F29;
  --win-bg: #282A36;
  --titlebar-bg: #21222C;
  --tabs-bg: #191A21;
  --tab-active-bg: #282A36;
  --border-color: #44475A;
  --text-main: #F8F8F2;
  --text-muted: #6272A4;
  --prompt-color: #50FA7B;
  --accent-color: #BD93F9;
  --highlight-color: #F1FA8C;
  --error-color: #FF5555;
  --success-color: #50FA7B;
  --cursor-color: #FF79C6;
}

/* Matrix Green Theme */
body.theme-matrix {
  --bg-main: #050805;
  --win-bg: #0D140D;
  --titlebar-bg: #080C08;
  --tabs-bg: #040604;
  --tab-active-bg: #0D140D;
  --border-color: #1A331A;
  --text-main: #00FF41;
  --text-muted: #008F11;
  --prompt-color: #00FF66;
  --accent-color: #003B00;
  --highlight-color: #CCFFCC;
  --error-color: #FF3333;
  --success-color: #00FF41;
  --cursor-color: #00FF41;
}

/* ==================================================
   Base Reset & Typography
================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

/* ==================================================
   Top Navigation Header
================================================== */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2.5rem;
  background-color: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  color: var(--text-main);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-muted);
}

.nav-item:hover {
  color: var(--prompt-color);
}

.divider {
  color: var(--border-color);
}

/* ==================================================
   Workspace & Terminal Window
================================================== */
.workspace {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.terminal-window {
  width: 100%;
  max-width: 1000px;
  height: 620px;
  background-color: var(--win-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: var(--transition);
}

/* Titlebar */
.terminal-titlebar {
  background-color: var(--titlebar-bg);
  height: 40px;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  user-select: none;
}

.window-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.control-btn {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.control-btn:hover {
  opacity: 0.8;
}

.control-btn.close { background-color: #FF5F56; }
.control-btn.minimize { background-color: #FFBD2E; }
.control-btn.maximize { background-color: #27C93F; }

.window-title {
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.titlebar-actions {
  display: flex;
  gap: 0.5rem;
}

.action-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.action-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--text-muted);
}

/* Tabs Bar */
.terminal-tabs {
  background-color: var(--tabs-bg);
  height: 34px;
  display: flex;
  align-items: center;
  padding: 0 0.5rem;
  border-bottom: 1px solid var(--border-color);
  gap: 2px;
}

.tab {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  cursor: pointer;
  transition: var(--transition);
}

.tab.active {
  background-color: var(--tab-active-bg);
  color: var(--text-main);
  border-top: 1px solid var(--accent-color);
}

.tab-close {
  font-size: 1rem;
  line-height: 0.8;
  opacity: 0.5;
}

.tab:hover .tab-close {
  opacity: 1;
}

/* ==================================================
   Terminal Body & Content Area
================================================== */
.terminal-body {
  flex: 1;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.925rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  scroll-behavior: smooth;
}

/* Custom Scrollbar */
.terminal-body::-webkit-scrollbar {
  width: 8px;
}
.terminal-body::-webkit-scrollbar-track {
  background: var(--win-bg);
}
.terminal-body::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
.terminal-body::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Welcome Banner */
.welcome-banner {
  margin-bottom: 0.5rem;
}

.banner-title {
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.banner-sub {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 0.2rem;
}

.banner-divider {
  border: none;
  border-bottom: 1px dashed var(--border-color);
  margin-top: 0.75rem;
}

.highlight {
  color: var(--highlight-color);
  font-weight: 500;
}

.key-tag {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-size: 0.75rem;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

/* ==================================================
   Output Formatting Classes
================================================== */
.output-block {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.output-line {
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.output-echo {
  color: var(--text-main);
}

.output-error {
  color: var(--error-color);
}

.output-success {
  color: var(--success-color);
}

/* Table / Grid for Commands & Projects */
.grid-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.5rem 1rem;
  margin: 0.5rem 0;
}

.grid-item {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.cmd-name {
  color: var(--prompt-color);
  font-weight: 700;
  min-width: 85px;
}

.cmd-desc {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ==================================================
   Interactive Input Prompt
================================================== */
.terminal-input-line {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-top: 0.25rem;
}

.prompt-text {
  color: var(--prompt-color);
  font-weight: 700;
  user-select: none;
  white-space: nowrap;
}

.input-wrapper {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.command-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.925rem;
  caret-color: transparent; /* Hide native caret to use our custom animated one */
}

/* Animated Cursor */
.custom-cursor {
  display: inline-block;
  width: 8px;
  height: 1.1em;
  background-color: var(--cursor-color);
  margin-left: 1px;
  animation: blink 1s step-end infinite;
  pointer-events: none;
}

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

/* ==================================================
   Footer Section
================================================== */
.footer {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
}

.footer-brand {
  color: var(--text-main);
  font-weight: 600;
}