:root {
  --bg-green: #001100;
  --fg-green: #33ff66;
  --bg-amber: #1a0b00;
  --fg-amber: #ffb347;
  --border-width: 1px;
  --font-main: "Fira Code", "Consolas", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-main);
  background-color: var(--bg-green);
  color: var(--fg-green);
  text-shadow: 0 0 4px rgba(0, 0, 0, 0.8);
}

body.theme-green {
  background-color: var(--bg-green);
  color: var(--fg-green);
}

body.theme-amber {
  background-color: var(--bg-amber);
  color: var(--fg-amber);
}

body.theme-green a {
  color: var(--fg-green);
}
body.theme-amber a {
  color: var(--fg-amber);
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 8px;
}

.topbar,
.footer,
.prompt {
  border: var(--border-width) solid currentColor;
  padding: 4px 8px;
  font-size: 12px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar-right .theme-btn {
  background: transparent;
  border: none;
  color: inherit;
  font-family: var(--font-main);
  font-size: 12px;
  cursor: pointer;
  padding: 0 4px;
}

.topbar-right .theme-btn:focus {
  outline: 1px dashed currentColor;
}

.main {
  flex: 1;
  display: flex;
  gap: 4px;
  margin: 4px 0;
  min-height: 0;
}

.sidebar {
  flex: 0 0 22%;
  border: var(--border-width) solid currentColor;
  padding: 4px;
  font-size: 12px;
  overflow-y: auto;
}

.sidebar-section + .sidebar-section {
  margin-top: 8px;
}

.sidebar-title {
  font-weight: bold;
  margin-bottom: 2px;
  text-transform: uppercase;
}

.sidebar-item {
  padding-left: 2px;
}

.buffer-wrap {
  flex: 1;
  border: var(--border-width) solid currentColor;
  padding: 4px;
  overflow: hidden;
  display: flex;
}

.buffer {
  margin: 0;
  font-size: 12px;
  white-space: pre-wrap;
  overflow-y: auto;
  width: 100%;
}

.prompt {
  display: flex;
  align-items: center;
  margin-bottom: 4px;
}

.prompt-label {
  margin-right: 4px;
}

.prompt-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: inherit;
  font-family: var(--font-main);
  font-size: 12px;
}

.footer {
  font-size: 11px;
  line-height: 1.4;
}

.footer a {
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Easter egg overlay */

.easter-egg {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  color: inherit;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.easter-egg.visible {
  display: flex;
}

.easter-content {
  margin: 0;
  font-size: 12px;
  white-space: pre;
}

/* Responsive */

@media (max-width: 768px) {
  .main {
    flex-direction: column;
  }
  .sidebar {
    flex: 0 0 auto;
    max-height: 160px;
  }
}