:root {
  --bg-color: #080c10;
  --bezel-color: #121820;
  --bezel-border: #21262d;
  --screen-bg: #05080c;
  --screen-text: #58a6ff;
  --accent-color: #3fb950;
  --warning-color: #d29922;
  --danger-color: #f85149;
  --font-mono: "Fira Code", "JetBrains Mono", "SF Mono", Menlo, Consolas, Monaco, "Courier New", monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-color);
  color: #c9d1d9;
  font-family: var(--font-mono);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 12px;
  overflow-x: hidden;
}

.app-container {
  width: 100%;
  max-width: 960px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Header & Barra Superior */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 8px 14px;
  background: var(--bezel-color);
  border: 1px solid var(--bezel-border);
  border-radius: 8px;
}

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

.logo-icon {
  font-size: 1.4rem;
}

.logo-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: #f0f6fc;
  letter-spacing: -0.5px;
}

.badge {
  font-size: 0.7rem;
  background: #1f6feb33;
  color: #58a6ff;
  border: 1px solid #1f6feb66;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  font-weight: bold;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.save-status {
  font-size: 0.8rem;
  color: #8b949e;
  transition: color 0.3s ease;
  margin-right: 4px;
}

.save-status.saved {
  color: var(--accent-color);
}

.tool-btn {
  background: #21262d;
  color: #c9d1d9;
  border: 1px solid #30363d;
  border-radius: 6px;
  padding: 6px 10px;
  font-family: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tool-btn:hover {
  background: #30363d;
  color: #f0f6fc;
}

.tool-btn:active {
  transform: translateY(1px);
}

.tool-btn.danger {
  color: #ff7b72;
}

.tool-btn.danger:hover {
  background: #da363322;
  border-color: #f85149;
}

/* Marco de Terminal */
.terminal-outer {
  width: 100%;
}

.terminal-bezel {
  background: var(--bezel-color);
  border: 1px solid var(--bezel-border);
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: #161b22;
  border-bottom: 1px solid var(--bezel-border);
}

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

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.terminal-title {
  font-size: 0.78rem;
  color: #8b949e;
  letter-spacing: 0.5px;
}

.fps-counter {
  font-size: 0.75rem;
  color: #8b949e;
}

/* Pantalla del Terminal */
.terminal-screen {
  background: var(--screen-bg);
  padding: 16px;
  overflow-x: auto;
  overflow-y: hidden;
  position: relative;
  min-height: 480px;
}

/* Efecto sutil de scanline CRT */
.terminal-screen::after {
  content: " ";
  display: block;
  position: absolute;
  top: 0; left: 0; bottom: 0; right: 0;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%);
  background-size: 100% 4px;
  pointer-events: none;
  opacity: 0.35;
}

#screen {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.25;
  color: #e6edf3;
  white-space: pre;
  tab-size: 4;
  outline: none;
  user-select: text;
  text-shadow: 0 0 1px rgba(255, 255, 255, 0.2);
}

.controls-hint {
  padding: 8px 16px;
  background: #0d1117;
  border-top: 1px solid var(--bezel-border);
  font-size: 0.8rem;
  color: #8b949e;
  text-align: center;
}

/* Controles Táctiles y Accesibles */
.mobile-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

.controls-row {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.touch-btn {
  background: #161b22;
  color: #f0f6fc;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 10px 14px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.1s ease;
  user-select: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.touch-btn:hover {
  background: #21262d;
  border-color: #58a6ff;
}

.touch-btn:active {
  transform: scale(0.96);
  background: #30363d;
}

.touch-btn.primary {
  width: 100%;
  padding: 14px;
  font-size: 1.05rem;
  background: #238636;
  border-color: #2ea043;
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(46, 160, 67, 0.25);
}

.touch-btn.primary:hover {
  background: #2ea043;
}

.touch-btn.primary:active {
  background: #238636;
  transform: scale(0.98);
}

.btn-shortcut {
  font-size: 0.8rem;
  opacity: 0.85;
}

.activities-row {
  display: flex;
  justify-content: center;
}

.row-label {
  font-size: 0.85rem;
  color: #8b949e;
  margin-right: 4px;
}

.key-btn {
  flex: 1;
  max-width: 80px;
  padding: 10px;
  font-size: 1rem;
}

.nav-row {
  display: flex;
  justify-content: space-between;
}

.nav-btn {
  flex: 1;
  font-size: 0.82rem;
  padding: 8px 10px;
}

.back-btn {
  background: #21262d;
}

.back-btn:hover {
  background: #30363d;
}

.danger-btn {
  background: #b62324;
  border-color: #d73a49;
  box-shadow: 0 2px 10px rgba(218, 54, 51, 0.35);
}

.danger-btn:hover {
  background: #da3633;
}

.context-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  animation: fadeIn 0.15s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-3px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsividad para móviles */
@media (max-width: 768px) {
  body {
    padding: 6px;
  }

  .top-nav {
    padding: 6px 10px;
  }

  .logo-title {
    font-size: 0.95rem;
  }

  #screen {
    font-size: 11px;
    line-height: 1.2;
  }

  .terminal-screen {
    padding: 10px 8px;
    min-height: 400px;
  }

  .touch-btn {
    padding: 8px 10px;
    font-size: 0.82rem;
  }

  .touch-btn.primary {
    padding: 12px;
    font-size: 0.95rem;
  }

  .nav-btn {
    font-size: 0.75rem;
    padding: 6px 8px;
  }
}