/* ==========================================================================
   RETRO TERMINAL CSS - DESIGN SYSTEM
   ========================================================================== */

/* Theme Palette Definitions */
:root {
  /* Green Phosphor (Default) */
  --bg-color: #060907;
  --bg-grid: #090e0b;
  --panel-bg: rgba(10, 16, 12, 0.82);
  --accent-color: #33ff66;
  --accent-glow: transparent;
  --accent-glow-strong: transparent;
  --muted-accent: #118f35;
  --border-color: rgba(51, 255, 102, 0.25);
  --border-color-focus: rgba(51, 255, 102, 0.6);
  --text-color: #a8ffa8;
  --dim-text: #60c960;
  --title-color: #33ff66;
  --scrollbar-bg: #090e0b;
  --scrollbar-thumb: #33ff66;
  --font-monospace: 'JetBrains Mono', 'Fira Code', monospace;
  --window-height: 85vh;
  --window-width: 92vw;
  --header-height: 38px;
  --footer-height: 28px;
  
  /* System variables */
  --glow-intensity: 0;
}

/* Theme: Amber Classic */
body.theme-amber {
  --bg-color: #080603;
  --bg-grid: #100b05;
  --panel-bg: rgba(16, 12, 6, 0.85);
  --accent-color: #ffb000;
  --accent-glow: transparent;
  --accent-glow-strong: transparent;
  --muted-accent: #945300;
  --border-color: rgba(255, 176, 0, 0.25);
  --border-color-focus: rgba(255, 176, 0, 0.6);
  --text-color: #ffd080;
  --dim-text: #c28821;
  --title-color: #ffb000;
  --scrollbar-bg: #100b05;
  --scrollbar-thumb: #ffb000;
}

/* Theme: Cyber Cyan */
body.theme-cyan {
  --bg-color: #02070c;
  --bg-grid: #040e18;
  --panel-bg: rgba(4, 14, 24, 0.82);
  --accent-color: #00d9ff;
  --accent-glow: transparent;
  --accent-glow-strong: transparent;
  --muted-accent: #006b8c;
  --border-color: rgba(0, 217, 255, 0.25);
  --border-color-focus: rgba(0, 217, 255, 0.6);
  --text-color: #b3f2ff;
  --dim-text: #0099cc;
  --title-color: #00d9ff;
  --scrollbar-bg: #040e18;
  --scrollbar-thumb: #00d9ff;
}

/* Theme: Digital Matrix (Classic Deep Green Black) */
body.theme-matrix {
  --bg-color: #000000;
  --bg-grid: #030a03;
  --panel-bg: rgba(0, 0, 0, 0.92);
  --accent-color: #00ff00;
  --accent-glow: transparent;
  --accent-glow-strong: transparent;
  --muted-accent: #008000;
  --border-color: rgba(0, 255, 0, 0.3);
  --border-color-focus: rgba(0, 255, 0, 0.7);
  --text-color: #8aff8a;
  --dim-text: #00bb00;
  --title-color: #00ff00;
  --scrollbar-bg: #000000;
  --scrollbar-thumb: #00ff00;
}

/* ==========================================================================
   RESET & LAYOUT BASE
   ========================================================================== */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  outline: none;
  font-family: var(--font-monospace);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-color);
  background-image: linear-gradient(var(--bg-grid) 1px, transparent 1px),
                    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 50px 50px;
  color: var(--text-color);
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.4s ease;
}

/* Ambient Canvas behind everything */
#ambient-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.12;
  pointer-events: none;
}

/* ==========================================================================
   CRT DISPLAY FILTERS & EFFECT OVERLAYS
   ========================================================================== */

/* Subtle Screen Flicker */
@keyframes crt-flicker {
  0% { opacity: 0.985; }
  50% { opacity: 0.993; }
  100% { opacity: 0.985; }
}

.crt-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 255, 0.03) 0%,
    rgba(0, 0, 0, 0.4) 100%
  );
  pointer-events: none;
  z-index: 9999;
}

.scanlines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    rgba(18, 16, 16, 0) 50%, 
    rgba(0, 0, 0, 0.28) 50%
  );
  background-size: 100% 4px;
  pointer-events: none;
  z-index: 9998;
}

/* CRT Screen bloom and scanlines when active */
.crt-effects {
  text-shadow: 0 0 calc(4px * var(--glow-intensity)) var(--accent-glow);
  animation: crt-flicker 0.15s infinite;
}

/* Turn off CRT classes */
body.crt-off .scanlines {
  display: none;
}
body.crt-off .crt-overlay {
  background: none;
}
body.crt-off .crt-effects {
  text-shadow: none;
  animation: none;
}

/* ==========================================================================
   MAIN WINDOW LAYOUT
   ========================================================================== */

#app-container {
  z-index: 10;
  display: flex;
  justify-content: center;
  align-items: center;
  width: var(--window-width);
  height: var(--window-height);
  transition: transform 0.5s cubic-bezier(0.19, 1, 0.22, 1), opacity 0.5s ease;
}

#terminal-window {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 0;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  position: relative;
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

#terminal-window:focus-within {
  border-color: var(--border-color-focus);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.7), 
              0 0 25px var(--accent-glow-strong);
}

/* Window Header / Title Bar */
.window-header {
  height: var(--header-height);
  background: rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid var(--border-color);
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  transition: border-bottom-color 0.4s ease;
}

.header-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-section.center {
  flex-grow: 1;
  justify-content: center;
  text-align: center;
}

/* MacOS Window Style Circles */
.win-btn {
  background: transparent;
  border: none;
  color: var(--dim-text);
  font-size: 13px;
  font-weight: bold;
  cursor: pointer;
  padding: 0 4px;
  transition: all 0.15s ease;
}

.win-btn:hover {
  opacity: 1;
}

.win-btn.close { color: #ff5f56; }
.win-btn.minimize { color: #ffbd2e; }
.win-btn.maximize { color: #27c93f; }

.win-btn.close:hover { background: #ff5f56; color: var(--bg-color); }
.win-btn.minimize:hover { background: #ffbd2e; color: var(--bg-color); }
.win-btn.maximize:hover { background: #27c93f; color: var(--bg-color); }

.window-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--title-color);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}

/* Action controls */
.control-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--dim-text);
  padding: 3px 8px;
  font-size: 11px;
  border-radius: 0;
  cursor: pointer;
  transition: all 0.2s ease;
}

.control-btn:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  box-shadow: 0 0 5px var(--accent-glow);
}

.control-btn.active {
  background: var(--muted-accent);
  border-color: var(--accent-color);
  color: var(--bg-color);
  font-weight: bold;
}

.control-label {
  font-size: 11px;
  color: var(--dim-text);
}

/* Theme picker dots */
.theme-selector-container {
  display: flex;
  align-items: center;
  gap: 6px;
}

.theme-dots {
  display: flex;
  gap: 6px;
}

.theme-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--dim-text);
  padding: 2px 6px;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.theme-btn:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.theme-btn.active {
  background: var(--accent-color);
  color: var(--bg-color);
  border-color: var(--accent-color);
  font-weight: bold;
}

/* Power Switch Button */
.power-btn-text {
  background: transparent;
  border: 1px solid #ff3b30;
  color: #ff3b30;
  padding: 3px 8px;
  font-size: 11px;
  cursor: pointer;
  font-weight: bold;
  transition: all 0.15s ease;
}

.power-btn-text:hover {
  background: #ff3b30;
  color: var(--bg-color);
}

/* ==========================================================================
   WINDOW BODY SPLIT VIEW
   ========================================================================== */

.window-body {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
}

/* --------------------------------------------------------------------------
   SIDEBAR explorer panel
   -------------------------------------------------------------------------- */

.sidebar-panel {
  width: 240px;
  border-right: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  transition: width 0.3s cubic-bezier(0.19, 1, 0.22, 1), border-color 0.4s ease;
  overflow: hidden;
  user-select: none;
}

/* Sidebar collapsed state */
.sidebar-panel.collapsed {
  width: 0px;
  border-right: none;
}

.panel-header {
  height: 32px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  font-size: 11px;
  font-weight: bold;
  color: var(--dim-text);
  letter-spacing: 0.5px;
  transition: border-bottom-color 0.4s ease;
  white-space: nowrap;
}

.panel-title {
  text-overflow: ellipsis;
  overflow: hidden;
}

.collapse-btn {
  background: transparent;
  border: none;
  color: var(--dim-text);
  cursor: pointer;
  font-size: 10px;
  padding: 4px;
}

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

/* Directory Tree Styling */
.file-tree {
  flex: 1;
  overflow-y: auto;
  padding: 12px 6px;
}

.file-tree ul {
  list-style: none;
  padding-left: 12px;
}

.file-tree > ul {
  padding-left: 0;
}

.tree-node {
  margin: 4px 0;
  line-height: 20px;
  font-size: 12px;
  white-space: nowrap;
}

.tree-label {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--text-color);
  transition: background-color 0.15s ease, color 0.15s ease;
  width: 100%;
}

.tree-label:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--accent-color);
}

.tree-label {
  cursor: pointer;
  display: inline-block;
  padding: 1px 6px;
  border-radius: 0;
  color: var(--text-color);
  width: 100%;
}

.tree-label:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--accent-color);
}

/* Node Icons removed in favor of JS ASCII drawing */
.dir-label::before {
  content: none;
}
.tree-node.directory.open > .dir-label::before {
  content: none;
}

.file-label::before {
  content: none;
}

.exe-label::before {
  content: none;
}

.exe-label {
  color: var(--accent-color);
  font-weight: 500;
}

/* File selected visual state - Inverse video */
.tree-node.file.active > .file-label {
  background: var(--accent-color);
  color: var(--bg-color);
  font-weight: bold;
}

/* --------------------------------------------------------------------------
   CONSOLE TERMINAL panel
   -------------------------------------------------------------------------- */

.console-panel {
  flex: 1;
  background: transparent;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.terminal-scroller {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  scroll-behavior: smooth;
}

#terminal-output {
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.5;
  font-size: 13.5px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Interactive elements in Output */
.terminal-line {
  margin-bottom: 4px;
}

.terminal-command-echo {
  color: var(--dim-text);
  margin-bottom: 8px;
}

.terminal-command-echo::before {
  content: 'guest@stevenjoelrs:~$ ';
  color: var(--accent-color);
  opacity: 0.7;
}

/* ASCII Banner Styling */
.ascii-banner {
  color: var(--accent-color);
  font-family: var(--font-monospace);
  line-height: 1.15;
  white-space: pre;
  margin-bottom: 16px;
  overflow-x: auto;
  font-weight: bold;
  letter-spacing: -0.5px;
}

/* Grid & Tables generated in terminal output */
.terminal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 10px 0;
  width: 100%;
}

.terminal-card {
  border: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.25);
  border-radius: 0;
  padding: 12px;
  transition: all 0.2s ease;
}

.terminal-card:hover {
  border-color: var(--accent-color);
  background: rgba(0, 0, 0, 0.35);
  box-shadow: 0 0 8px var(--accent-glow);
  transform: translateY(-2px);
}

.card-title {
  color: var(--accent-color);
  font-weight: bold;
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
}

.card-tech {
  font-size: 11px;
  color: var(--dim-text);
  margin-top: 8px;
  border-top: 1px dashed var(--border-color);
  padding-top: 6px;
}

.terminal-table {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0;
  font-size: 13px;
}

.terminal-table th, .terminal-table td {
  border: 1px solid var(--border-color);
  padding: 6px 10px;
  text-align: left;
}

.terminal-table th {
  background: rgba(255, 255, 255, 0.05);
  color: var(--accent-color);
}

.terminal-table tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* Retro Progress Bars */
.progress-bar-container {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 4px 0;
}

.progress-label {
  width: 110px;
  flex-shrink: 0;
}

.progress-bar-track {
  flex-grow: 1;
  max-width: 250px;
  border: 1px solid var(--border-color);
  height: 14px;
  position: relative;
  background: rgba(0, 0, 0, 0.4);
}

.progress-bar-fill {
  background: var(--accent-color);
  height: 100%;
}

/* Hyperlinks in Output */
.terminal-link {
  color: var(--accent-color);
  text-decoration: underline;
  cursor: pointer;
}

.terminal-link:hover {
  color: #fff;
}

/* Input line styling */
.terminal-prompt-line {
  display: flex;
  align-items: center;
  margin-top: 10px;
  flex-wrap: wrap;
  width: 100%;
}

.prompt-user { color: var(--accent-color); font-weight: bold; }
.prompt-at { color: var(--text-color); }
.prompt-host { color: var(--dim-text); }
.prompt-separator { color: var(--text-color); }
.prompt-path { color: var(--accent-color); }
.prompt-char { color: var(--text-color); margin-right: 8px; }

.input-wrapper {
  flex: 1;
  min-width: 150px;
  position: relative;
  display: flex;
  align-items: center;
}

#terminal-input {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-color);
  font-size: 13.5px;
  caret-color: var(--accent-color); /* Fallback */
  caret-shape: block; /* Modern browsers block cursor */
  text-shadow: 0 0 4px var(--accent-glow);
}

/* ==========================================================================
   WINDOW FOOTER STATUS BAR
   ========================================================================== */

.window-footer {
  height: var(--footer-height);
  background: rgba(0, 0, 0, 0.4);
  border-top: 1px solid var(--border-color);
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--dim-text);
  user-select: none;
  transition: border-top-color 0.4s ease;
}

.footer-item {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.footer-item .highlight {
  color: var(--accent-color);
  font-weight: bold;
}

.indicator {
  font-size: 10px;
}

.indicator.green {
  color: #33ff66;
}

.indicator.red {
  color: #ff3b30;
}

/* ==========================================================================
   SHUTDOWN SCREEN (CRT POWER OFF)
   ========================================================================== */

#power-shutdown-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  z-index: 10000;
  display: none;
  justify-content: center;
  align-items: center;
  pointer-events: none;
}

/* Shrink application and shut down simulation */
#app-container.shutdown {
  animation: crt-power-off 0.45s cubic-bezier(0.19, 1, 0.22, 1) forwards;
}

@keyframes crt-power-off {
  0% {
    transform: scaleY(1) scaleX(1);
    filter: brightness(1);
    opacity: 1;
  }
  40% {
    transform: scaleY(0.01) scaleX(1);
    filter: brightness(2);
    opacity: 1;
  }
  100% {
    transform: scaleY(0.001) scaleX(0.001);
    filter: brightness(5);
    opacity: 0;
  }
}

.power-off-signal {
  width: 4px;
  height: 4px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 8px #fff;
  animation: fade-out 0.8s ease forwards;
  opacity: 0;
}

@keyframes fade-out {
  0% { opacity: 1; transform: scale(3); }
  100% { opacity: 0; transform: scale(0.1); }
}

/* ==========================================================================
   SCROLLBAR & MISC UTILITIES
   ========================================================================== */

/* Retro Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border: 1px solid var(--scrollbar-bg);
  border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb);
  box-shadow: 0 0 4px var(--accent-glow);
}

/* Responsive Overrides */
@media (max-width: 768px) {
  #app-container {
    width: 98vw;
    height: 96vh;
  }
  
  .sidebar-panel {
    position: absolute;
    left: 0;
    top: 38px;
    bottom: 28px;
    z-index: 100;
    width: 220px;
    background: rgba(10, 16, 12, 0.96);
    box-shadow: 5px 0 15px rgba(0, 0, 0, 0.5);
  }
  
  .sidebar-panel.collapsed {
    width: 0;
  }
  
  .header-section.right .theme-selector-container {
    display: none; /* Hide theme selector controls on header for small screen */
  }
  
  .footer-item#footer-command-info {
    display: none;
  }

  .ascii-banner {
    font-size: 8px; /* Scale down ASCII art for small screens */
  }
}

/* Matrix Falling Characters Canvas Layer */
.matrix-mode-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.15;
}

/* ==========================================================================
   RETRO SIMULATED TEXT EDITOR (edit command)
   ========================================================================== */
.editor-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-color);
  z-index: 50;
  display: flex;
  flex-direction: column;
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.editor-header {
  height: 26px;
  background: var(--border-color-focus);
  color: var(--bg-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 12px;
  font-size: 11px;
  font-weight: bold;
  user-select: none;
}

.editor-textarea {
  flex: 1;
  background: transparent;
  border: none;
  color: inherit;
  font-family: var(--font-monospace);
  font-size: 13.5px;
  padding: 12px;
  resize: none;
  line-height: 1.5;
  outline: none;
}

.editor-footer {
  height: 22px;
  background: rgba(0, 0, 0, 0.4);
  border-top: 1px solid var(--border-color);
  font-size: 11px;
  color: var(--dim-text);
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}