*, *::before, *::after {
  box-sizing: border-box;
}

/* --- Screen-reader only utility --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Base --- */
body {
  background-color: #111;
  color: #00ff00;
  font-family: 'Courier New', Courier, monospace;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  height: 100dvh; /* dynamic viewport height for mobile */
  overflow: hidden;
}

main {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}

/* --- Terminal output area --- */
.terminal {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  border-bottom: 1px solid #2a2a2a;
  scroll-behavior: smooth;
  overscroll-behavior: contain;
}

/* --- Quote blocks --- */
.quote-block {
  margin-bottom: 0.85rem;
}

.quote-en {
  color: #ffc600;
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  flex-wrap: wrap;
  line-height: 1.4;
}

.quote-id {
  color: #444;
  font-size: 0.8em;
  flex-shrink: 0;
}

.quote-es {
  color: #777;
  padding-left: 1.6rem;
  margin-top: 0.15rem;
  line-height: 1.4;
}

/* --- Favorite button --- */
.fav-btn {
  background: none;
  border: none;
  color: #ffc600;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
  transition: color 0.15s, transform 0.1s;
}

.fav-btn:hover {
  color: #fff;
  transform: scale(1.2);
}

.fav-btn:focus-visible {
  outline: 2px solid #ffc600;
  outline-offset: 2px;
  border-radius: 2px;
}

/* --- Input row --- */
.input-row {
  display: flex;
  align-items: center;
  background: #0d0d0d;
  border-top: 1px solid #2a2a2a;
}

.prompt {
  color: #00ff00;
  padding: 0 0 0 1rem;
  font-size: 1rem;
  user-select: none;
}

#commandInput {
  flex: 1;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  color: #00ff00;
  background: transparent;
  border: none;
  outline: none;
  caret-color: #00ff00;
  font-family: inherit;
}

#commandInput::placeholder {
  color: #333;
}

.input-row:focus-within {
  border-top-color: #00aa00;
  background: #0f0f0f;
}

/* --- Quick-command buttons (mobile + desktop convenience) --- */
.quick-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  background: #0a0a0a;
  border-top: 1px solid #1e1e1e;
}

.quick-btn {
  background: #181818;
  border: 1px solid #2e2e2e;
  color: #00bb00;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.78rem;
  padding: 0.3rem 0.65rem;
  border-radius: 3px;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  user-select: none;
}

.quick-btn:hover {
  background: #00ff00;
  border-color: #00ff00;
  color: #000;
}

.quick-btn:focus-visible {
  outline: 2px solid #00ff00;
  outline-offset: 2px;
}

.quick-btn:active {
  transform: scale(0.96);
}

/* --- Mobile adjustments --- */
@media (max-width: 600px) {
  .terminal {
    font-size: 0.82rem;
    padding: 0.75rem;
  }

  #commandInput {
    font-size: 0.9rem;
  }

  .quick-buttons {
    padding: 0.4rem 0.75rem;
    gap: 0.3rem;
  }

  .quick-btn {
    font-size: 0.72rem;
    padding: 0.28rem 0.55rem;
  }

  .quote-es {
    padding-left: 1rem;
  }
}

/* --- Scrollbar styling (Webkit) --- */
.terminal::-webkit-scrollbar {
  width: 4px;
}

.terminal::-webkit-scrollbar-track {
  background: #111;
}

.terminal::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 2px;
}

.terminal::-webkit-scrollbar-thumb:hover {
  background: #00aa00;
}