/* ── Reset ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body, html {
  font-family: Arial, sans-serif;
  background: #000;
  color: #fff;
  height: 100dvh;
  overflow: hidden;
}

/* ── Partículas ───────────────────────────────────────────────────── */
#particles-js {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: #000;
}

/* ══ MENÚ LATERAL ════════════════════════════════════════════════════ */
.menu-icon {
  position: fixed;
  top: 20px;
  left: 20px;
  font-size: 30px;
  color: #fff;
  cursor: pointer;
  z-index: 1100;
  line-height: 1;
  user-select: none;
}

.sidebar {
  position: fixed;
  top: 0;
  left: -250px;
  width: 250px;
  height: 100%;
  background: rgba(51,51,51,0.95);
  transition: left 0.3s ease;
  z-index: 1050;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 20px;
  background: rgba(34,34,34,0.95);
  color: #fff;
  text-align: right;
}

.back-arrow {
  cursor: pointer;
  font-size: 24px;
  user-select: none;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
  flex: 1;
}

.sidebar ul li {
  padding: 15px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar ul li a {
  color: #fff;
  text-decoration: none;
  font-size: 18px;
  display: block;
  transition: color 0.2s;
}

.sidebar ul li a:hover  { color: #33FFFF; }
.sidebar ul li a.active { color: #33FFFF; font-weight: 700; }

.sidebar-social {
  display: flex;
  gap: 18px;
  padding: 18px 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.sidebar-social a       { font-size: 22px; transition: opacity 0.2s; }
.sidebar-social a:hover { opacity: 0.75; }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1040;
}
.sidebar-overlay.open { display: block; }

/* ══ CHAT PRINCIPAL ══════════════════════════════════════════════════ */
.cai-wrapper {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: stretch;
}

.cai-shell {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

/* ── Header ───────────────────────────────────────────────────────── */
.cai-header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px 14px 70px;
  background: rgba(0,0,0,0.85);
  border-bottom: 1px solid rgba(0,255,255,0.2);
  flex-shrink: 0;
}
.cai-logo {
  font-family: 'Arial Black', Arial, sans-serif;
  font-size: 1.2rem;
  color: #33FFFF;
  text-shadow: 0 0 14px rgba(51,255,255,0.7);
  letter-spacing: 0.04em;
}
.cai-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #33FFFF;
  box-shadow: 0 0 8px #33FFFF;
  margin-left: 10px;
  flex-shrink: 0;
}

/* ── Mensajes ─────────────────────────────────────────────────────── */
.cai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,255,255,0.2) transparent;
}
.cai-messages::-webkit-scrollbar       { width: 5px; }
.cai-messages::-webkit-scrollbar-track { background: transparent; }
.cai-messages::-webkit-scrollbar-thumb { background: rgba(0,255,255,0.2); border-radius: 10px; }

/* ── Burbujas ─────────────────────────────────────────────────────── */
.bubble-row           { display: flex; }
.bubble-row.user      { justify-content: flex-end; }
.bubble-row.assistant { justify-content: flex-start; }

.bubble {
  max-width: 75%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 0.95rem;
  line-height: 1.7;
  word-break: break-word;
  animation: cai-pop 0.18s ease;
}
.bubble.user {
  background: rgba(0,255,255,0.15);
  border: 1px solid rgba(0,255,255,0.4);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.bubble.assistant {
  background: rgba(0,0,0,0.7);
  border: 1px solid rgba(255,255,255,0.1);
  color: #eee;
  border-bottom-left-radius: 4px;
}

/* ── Markdown ─────────────────────────────────────────────────────── */
.bubble p               { margin: 0 0 8px; }
.bubble p:last-child    { margin-bottom: 0; }
.bubble h1              { font-size: 1.25em; font-weight: 700; margin: 12px 0 6px; color: #33FFFF; }
.bubble h2              { font-size: 1.1em;  font-weight: 700; margin: 10px 0 5px; color: #33FFFF; }
.bubble h3, .bubble h4  { font-size: 1em;   font-weight: 700; margin: 8px 0 4px; }
.bubble ul, .bubble ol  { padding-left: 22px; margin: 6px 0; }
.bubble li              { margin: 3px 0; }
.bubble strong          { font-weight: 700; color: #fff; }
.bubble em              { font-style: italic; opacity: 0.9; }
.bubble blockquote      { border-left: 3px solid #33FFFF; padding-left: 12px; margin: 8px 0; opacity: 0.8; }
.bubble hr              { border: none; border-top: 1px solid rgba(255,255,255,0.15); margin: 10px 0; }
.bubble a               { color: #33FFFF; }
.bubble table           { border-collapse: collapse; width: 100%; margin: 8px 0; font-size: 0.88em; }
.bubble th, .bubble td  { border: 1px solid rgba(255,255,255,0.15); padding: 6px 10px; }
.bubble th              { background: rgba(51,255,255,0.1); color: #33FFFF; }

/* Código en línea */
.bubble code:not(.hljs) {
  background: rgba(51,255,255,0.1);
  border: 1px solid rgba(51,255,255,0.2);
  border-radius: 4px;
  padding: 1px 6px;
  font-family: 'Courier New', monospace;
  font-size: 0.87em;
  color: #33FFFF;
}

/* Bloques de código */
.bubble pre {
  background: #0d1117;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  padding: 14px 16px;
  margin: 10px 0;
  overflow-x: auto;
  position: relative;
}
.bubble pre code {
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  color: inherit !important;
  font-family: 'Courier New', monospace;
  font-size: 0.84em;
  line-height: 1.6;
}

/* Botón copiar */
.copy-btn {
  position: absolute;
  top: 8px; right: 8px;
  background: rgba(51,255,255,0.12);
  border: 1px solid rgba(51,255,255,0.3);
  border-radius: 6px;
  color: #33FFFF;
  padding: 3px 9px;
  font-size: 0.74rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}
.copy-btn:hover  { background: rgba(51,255,255,0.28); }
.copy-btn.copied { color: #4ade80; border-color: #4ade80; }

/* KaTeX */
.bubble .katex         { font-size: 1.05em; }
.bubble .katex-display { margin: 10px 0 !important; text-align: center; overflow-x: auto; }

/* Puntos de espera */
.bubble.typing { display: flex; gap: 6px; align-items: center; padding: 14px 18px; }
.bubble.typing span {
  display: inline-block; width: 8px; height: 8px;
  border-radius: 50%; background: #33FFFF; opacity: 0.5;
  animation: cai-bounce 1.2s infinite;
}
.bubble.typing span:nth-child(2) { animation-delay: 0.2s; }
.bubble.typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes cai-bounce {
  0%,80%,100% { transform: translateY(0); opacity: 0.4; }
  40%          { transform: translateY(-7px); opacity: 1; }
}
@keyframes cai-pop {
  from { transform: scale(0.94); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

/* ── Input ────────────────────────────────────────────────────────── */
.cai-input-area {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 14px 24px;
  background: rgba(0,0,0,0.85);
  border-top: 1px solid rgba(0,255,255,0.2);
  flex-shrink: 0;
}
.cai-input {
  flex: 1; resize: none;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(0,255,255,0.25);
  border-radius: 12px;
  padding: 10px 14px;
  color: #fff;
  font-family: Arial, sans-serif;
  font-size: 0.95rem;
  line-height: 1.5;
  max-height: 120px;
  overflow-y: auto;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.cai-input:focus        { border-color: #33FFFF; box-shadow: 0 0 10px rgba(51,255,255,0.25); }
.cai-input::placeholder { color: rgba(255,255,255,0.3); }
.cai-input:disabled     { opacity: 0.4; cursor: not-allowed; }

.cai-send {
  flex-shrink: 0; width: 44px; height: 44px;
  border-radius: 50%; background: transparent;
  border: 1.5px solid #33FFFF; color: #33FFFF; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
}
.cai-send:hover:not(:disabled)  { background: rgba(51,255,255,0.15); box-shadow: 0 0 12px rgba(51,255,255,0.5); }
.cai-send:active:not(:disabled) { transform: scale(0.9); }
.cai-send:disabled               { opacity: 0.3; cursor: not-allowed; }

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .cai-header     { padding: 12px 14px 12px 56px; }
  .cai-logo       { font-size: 1rem; }
  .cai-messages   { padding: 14px 12px; gap: 10px; }
  .bubble         { max-width: 88%; font-size: 0.9rem; padding: 10px 13px; }
  .cai-input-area { padding: 10px 12px; gap: 8px; }
  .cai-input      { font-size: 0.9rem; padding: 9px 12px; }
  .cai-send       { width: 40px; height: 40px; }
  .cai-img-btn    { width: 40px; height: 40px; }
  .img-modal      { width: calc(100% - 32px); padding: 20px; }
}

@media (max-width: 480px) {
  .bubble         { max-width: 94%; font-size: 0.85rem; }
  .cai-messages   { padding: 10px 8px; }
  .cai-input-area { padding: 8px 10px; }
  .ai-generated-img { max-height: 200px; }
}

/* ═══════════════════════════════════════════════════════════════════
   IMAGE GENERATION
   ═══════════════════════════════════════════════════════════════════ */

/* ── Image button ───────────────────────────────────────────────── */
.cai-img-btn {
  flex-shrink: 0; width: 44px; height: 44px;
  border-radius: 50%; background: transparent;
  border: 1.5px solid #c084fc; color: #c084fc; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
}
.cai-img-btn:hover { background: rgba(192,132,252,0.15); box-shadow: 0 0 12px rgba(192,132,252,0.5); }
.cai-img-btn:active { transform: scale(0.9); }

/* ── Image Modal ────────────────────────────────────────────────── */
.img-modal-overlay {
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease;
}
.img-modal-overlay.open {
  opacity: 1; pointer-events: auto;
}

.img-modal {
  background: rgba(20,20,30,0.97);
  border: 1px solid rgba(192,132,252,0.3);
  border-radius: 20px;
  padding: 28px;
  width: 420px; max-width: calc(100% - 32px);
  animation: img-modal-in 0.25s ease;
}
@keyframes img-modal-in {
  from { transform: scale(0.92); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

.img-modal h3 {
  color: #c084fc;
  font-size: 1.15rem;
  margin-bottom: 8px;
}
.img-modal p {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  margin-bottom: 16px;
  line-height: 1.5;
}

.img-prompt-input {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(192,132,252,0.3);
  border-radius: 12px;
  padding: 12px 14px;
  color: #fff;
  font-family: Arial, sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.img-prompt-input:focus {
  border-color: #c084fc;
  box-shadow: 0 0 12px rgba(192,132,252,0.3);
}
.img-prompt-input::placeholder { color: rgba(255,255,255,0.3); }

.img-modal-btns {
  display: flex; gap: 10px; margin-top: 16px; justify-content: flex-end;
}
.img-cancel-btn {
  background: none; border: 1px solid rgba(255,255,255,0.2);
  border-radius: 10px; color: rgba(255,255,255,0.6);
  padding: 8px 18px; font-size: 0.9rem; cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.img-cancel-btn:hover { background: rgba(255,255,255,0.06); color: #fff; }

.img-gen-btn {
  background: rgba(192,132,252,0.15); border: 1px solid rgba(192,132,252,0.4);
  border-radius: 10px; color: #c084fc;
  padding: 8px 18px; font-size: 0.9rem; font-weight: 700; cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
}
.img-gen-btn:hover { background: rgba(192,132,252,0.28); box-shadow: 0 0 14px rgba(192,132,252,0.4); }

/* ── Generated Image Bubble ─────────────────────────────────────── */
.bubble.image-bubble {
  max-width: 80%;
  padding: 14px;
}

.img-gen-label {
  font-size: 0.85rem;
  color: #c084fc;
  margin-bottom: 10px;
  font-style: italic;
}

.ai-generated-img {
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid rgba(192,132,252,0.2);
  display: block;
}

.img-gen-meta {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.45);
  margin-top: 8px;
}
.img-gen-meta strong { color: #4ade80; }

.img-download-btn {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 10px;
  background: rgba(192,132,252,0.1);
  border: 1px solid rgba(192,132,252,0.3);
  border-radius: 8px;
  color: #c084fc;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s;
}
.img-download-btn:hover { background: rgba(192,132,252,0.22); }