body { font-family: sans-serif; background-color: #ffffff; color: #e0e0e0; margin: 0; display: flex; flex-direction: column; height: 100vh; height: 100svh; overflow: hidden; align-items: center; }
header { background: #252525; padding: 0; text-align: center; border: none; width: 100%; display: flex; justify-content: center; flex-shrink: 0; }
.banner-img { width: 100%; height: auto; max-height: 60px; object-fit: contain; display: block; }

#chat-container { flex: 1; overflow-y: auto; padding: 15px; display: flex; flex-direction: column; gap: 10px; width: 100%; max-width: 500px; box-sizing: border-box; }
.message { padding: 8px 12px; border-radius: 12px; max-width: 90%; line-height: 1.4; word-wrap: break-word; font-size: 0.95rem; }
.user { align-self: flex-end; background: #1E88E5; color: #1a1a1a; font-weight: 600; border-bottom-right-radius: 2px; }
.bot { align-self: flex-start; background: #333; color: #e0e0e0; border: 1px solid #444; border-bottom-left-radius: 2px; white-space: pre-wrap; }
.bot a { color: #1E88E5; text-decoration: underline; }
.bot a:visited { color: #1E88E5; }
.bot a:hover { color: #90CAF9; }

/* Estilos para tablas en el chat móvil */
.message table { border-collapse: collapse; width: 100%; margin: 8px 0; background: #333; color: #fff; font-size: 0.85rem; border: 1px solid #555; }
.message th, .message td { border: 1px solid #555; padding: 6px 8px; text-align: left; }
.message th { background-color: #444; font-weight: bold; color: #1E88E5; }
.message tr:nth-child(even) { background-color: #3a3a3a; }

footer { padding: 10px; background: #252525; border-top: 1px solid #333; display: flex; gap: 8px; width: 100%; max-width: 500px; box-sizing: border-box; flex-shrink: 0; margin-bottom: env(safe-area-inset-bottom); align-items: flex-end; }
#userInput { flex: 1; padding: 10px; border-radius: 20px; border: 1px solid #444; background: #333; color: white; outline: none; font-size: 1rem; resize: none; overflow-y: auto; min-height: 44px; max-height: 120px; line-height: 1.4; white-space: pre-wrap; word-wrap: break-word; box-sizing: border-box; }
button { width: 44px; height: 44px; background: #1E88E5; border: none; color: white; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0; }
button:disabled { background: #555; }
.loading { font-style: italic; color: #888; }