:root { --bg: #000000; --fg: #00ff00; --line: #004400; --dim: #003300; --acc: #00ffcc; }
:root[data-theme="ambre"]  { --fg: #ffb000; --line: #664400; --dim: #332200; --acc: #ffd060; }
:root[data-theme="blanc"]  { --fg: #e8e8e8; --line: #555555; --dim: #333333; --acc: #ffffff; }
:root[data-theme="papier"] { --bg: #ffffff; --fg: #000000; --line: #999999; --dim: #bbbbbb; --acc: #0000cc; }

body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: "Courier New", Courier, monospace;
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
  padding: 30px 40px 90px 40px;
}

.top-right { text-align: right; margin-bottom: 25px; }

.center-title {
  text-align: center;
  font-size: 1.1rem;
  font-weight: normal;
  margin-bottom: 30px;
  letter-spacing: 1px;
}

p { margin: 15px 0; }

a { color: var(--fg); text-decoration: underline; }
a:hover, a:focus { background-color: var(--fg); color: var(--bg); outline: none; }

#help { margin: 15px 0; border: 1px dashed var(--line); padding: 10px 15px; font: inherit; }

/* Barre de prompt fixe */
#w3c-prompt {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--bg);
  border-top: 1px solid var(--dim);
  padding: 12px 40px;
  font-family: inherit;
  font-size: 14px;
  display: flex;
  align-items: center;
  z-index: 1000;
}

.terminal-input-wrapper {
  display: inline-flex;
  align-items: center;
  margin-left: 5px;
}

/* largeur ajustée au texte saisi (par w3c.js) pour que le curseur suive */
#terminal-input {
  background: transparent;
  border: none;
  color: var(--fg);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  width: 1ch;
  min-width: 1ch;
  padding: 0;
  caret-color: transparent;
}

/* Curseur bloc clignotant vert */
.cursor-block {
  display: inline-block;
  width: 9px;
  height: 17px;
  background-color: var(--fg);
  animation: blink 1s infinite;
  vertical-align: middle;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

#sm { margin-top: 10px; }
#sm h2 { font-size: 0.95rem; color: var(--acc); margin: 10px 0 5px 0; }
#sm h2 a { color: var(--acc); }
#sm h2 a:hover, #sm h2 a:focus { color: var(--bg); background-color: var(--acc); }
#sm ul { margin: 0; padding-left: 20px; }
#sm li { margin: 3px 0; }

#out { margin: 15px 0; white-space: pre-wrap; }
#out:empty { margin: 0; }

#matrix {
  position: fixed; inset: 0; width: 100%; height: 100%;
  z-index: 900; pointer-events: none; background: #000; transition: opacity 0.9s;
}

/* Effet tube cathodique */
body.crt { text-shadow: 0 0 4px var(--fg); }
body.crt::after {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 2000;
  background: repeating-linear-gradient(to bottom, rgba(0,0,0,0.25) 0, rgba(0,0,0,0.25) 1px, transparent 1px, transparent 3px);
}

@media (max-width: 600px) {
  body { padding: 20px 16px 90px 16px; }
  #w3c-prompt { padding: 12px 16px; flex-wrap: wrap; }
}

[hidden] { display: none !important; }

/* Lecteur d'articles */
#reader { max-width: 80ch; }
.doc-meta { text-align: center; color: var(--acc); margin: -15px 0 25px; font-size: 0.9em; word-break: break-all; }
.doc-h { font-size: 1em; font-weight: bold; margin: 28px 0 8px; }
#reader ul { list-style: none; margin: 10px 0; padding-left: 20px; }
#reader li { position: relative; margin: 4px 0; }
#reader li::before { content: "*"; position: absolute; left: -16px; }
#reader blockquote { margin: 15px 0; padding-left: 16px; border-left: 2px solid var(--line); }
.doc-pre { overflow-x: auto; margin: 15px 0; padding: 10px; border: 1px dashed var(--line); font: inherit; }
.doc-refs div { margin: 3px 0; word-break: break-word; }
.doc-end { margin-top: 40px; padding-top: 15px; border-top: 1px dashed var(--line); color: var(--acc); }