:root {
  --bg: #f5f6f8; --panel: #ffffff; --border: #e2e5ea; --text: #1c2128;
  --muted: #6b7280; --accent: #2f6f4f; --accent-dark: #204d37;
  --chip-bg: #eef2ee; --user-bubble: #2f6f4f; --user-text: #ffffff;
  --assistant-bubble: #f0f1f3;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--text);
}
header { background: var(--accent-dark); color: #fff; padding: 18px 24px; }
header h1 { margin: 0; font-size: 1.3rem; font-weight: 600; }
header p { margin: 4px 0 0; font-size: 0.85rem; opacity: 0.85; }
nav.topnav { display: flex; gap: 2px; padding: 0 20px; background: var(--accent-dark); border-top: 1px solid rgba(255,255,255,0.12); }
nav.topnav a {
  color: rgba(255,255,255,0.72); text-decoration: none; padding: 10px 16px;
  font-size: 0.85rem; border-bottom: 2px solid transparent;
}
nav.topnav a.active { color: #fff; border-bottom-color: #fff; font-weight: 600; }
nav.topnav a:hover { color: #fff; }
main {
  max-width: 980px; margin: 0 auto; padding: 20px 16px 60px;
  display: flex; flex-direction: column; gap: 20px;
}
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.stat-card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; }
.stat-card .n { font-size: 1.6rem; font-weight: 700; color: var(--accent-dark); }
.stat-card .label { font-size: 0.78rem; color: var(--muted); margin-top: 2px; }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.panel h2 { margin: 0 0 10px; font-size: 1rem; color: var(--accent-dark); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { background: var(--chip-bg); border-radius: 999px; padding: 4px 12px; font-size: 0.8rem; color: var(--accent-dark); }
#chat-log { display: flex; flex-direction: column; gap: 12px; margin-bottom: 14px; max-height: 65vh; overflow-y: auto; padding-right: 4px; }
.msg { max-width: 85%; padding: 10px 14px; border-radius: 12px; font-size: 0.92rem; line-height: 1.5; }
.msg.user { align-self: flex-end; background: var(--user-bubble); color: var(--user-text); }
.msg.assistant { align-self: flex-start; background: var(--assistant-bubble); }
.msg.assistant.error { background: #fdecea; color: #7a2318; }
.msg h1, .msg h2, .msg h3 { font-size: 1em; margin: 0.6em 0 0.3em; }
.msg ul { margin: 0.3em 0; padding-left: 1.2em; }
.msg code { background: rgba(0,0,0,0.06); padding: 1px 4px; border-radius: 4px; }
.msg table { border-collapse: collapse; margin: 6px 0; font-size: 0.85em; }
.msg th, .msg td { border: 1px solid var(--border); padding: 4px 8px; text-align: left; }
.meta { font-size: 0.72rem; color: var(--muted); margin-top: 6px; }
.doc-index { margin-top: 10px; padding-top: 8px; border-top: 1px solid rgba(0,0,0,0.08); font-size: 0.8rem; }
.doc-index-title { font-weight: 600; color: var(--accent-dark); margin-bottom: 4px; }
.doc-index-row { display: flex; align-items: center; gap: 8px; padding: 2px 0; flex-wrap: wrap; }
.doc-index-row code { background: rgba(0,0,0,0.06); padding: 1px 5px; border-radius: 4px; font-size: 0.75rem; }
.doc-index-row a { color: var(--accent-dark); text-decoration: none; word-break: break-all; }
.doc-index-row a:hover { text-decoration: underline; }
.doc-cat { color: var(--muted); font-size: 0.72rem; }
.input-row { display: flex; gap: 8px; }
input[type="text"], input[type="number"], select {
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 0.88rem; outline: none; font-family: inherit; background: #fff;
}
input[type="text"]:focus, input[type="number"]:focus, select:focus { border-color: var(--accent); }
#domanda { flex: 1; padding: 10px 14px; border: 1px solid var(--border); border-radius: 999px; font-size: 0.92rem; outline: none; }
#domanda:focus { border-color: var(--accent); }
button {
  background: var(--accent); color: #fff; border: none; border-radius: 999px;
  padding: 10px 22px; font-size: 0.88rem; cursor: pointer; font-family: inherit;
}
button:disabled { opacity: 0.5; cursor: default; }
button.secondary { background: var(--chip-bg); color: var(--accent-dark); }
.esempi { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.esempio { background: var(--chip-bg); border: 1px solid var(--border); border-radius: 999px; padding: 5px 12px; font-size: 0.78rem; color: var(--accent-dark); cursor: pointer; }
.esempio:hover { background: #dfe8e0; }
.loading { display: inline-flex; gap: 4px; align-items: center; }
.loading span { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); animation: pulse 1.2s infinite ease-in-out; }
.loading span:nth-child(2) { animation-delay: 0.2s; }
.loading span:nth-child(3) { animation-delay: 0.4s; }
@keyframes pulse { 0%, 80%, 100% { opacity: 0.3; } 40% { opacity: 1; } }

.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; align-items: end; }
.form-field { display: flex; flex-direction: column; gap: 4px; }
.form-field label { font-size: 0.75rem; color: var(--muted); }
.progress-bar { background: var(--chip-bg); border-radius: 999px; height: 10px; overflow: hidden; margin-top: 6px; }
.progress-bar-fill { background: var(--accent); height: 100%; transition: width 0.4s; }
.slider-row { display: flex; align-items: center; gap: 12px; }
.slider-row input[type="range"] { flex: 1; }
.slider-value { font-weight: 700; color: var(--accent-dark); min-width: 44px; text-align: right; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
table th, table td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; }
table th { background: var(--chip-bg); }
tr.progetto-row { cursor: pointer; }
tr.progetto-row:hover { background: var(--chip-bg); }
.doc-list-item { display: flex; align-items: center; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--border); font-size: 0.85rem; }
.doc-list-item a { color: var(--accent-dark); }
.status-msg { font-size: 0.85rem; color: var(--muted); margin-top: 8px; }