/* Altabot - UI (branding Fondazione Altagamma) */
:root {
  --navy: #10265C;
  --navy-dark: #0A1A45;
  --oro: #B99656;
  --bg: #F4F6FA;
  --card: #FFFFFF;
  --testo: #1C2333;
  --muto: #6B7280;
  --bordo: #E3E8F0;
  --raggio: 14px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--testo);
  display: flex;
  flex-direction: column;
}

/* ---------- brand ---------- */
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--navy); color: #fff;
  font-family: Georgia, "Times New Roman", serif; font-size: 24px;
  display: flex; align-items: center; justify-content: center;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-altagamma { font-weight: 700; letter-spacing: .14em; color: var(--navy); font-size: 15px; }
.brand-sub, .brand-bot { color: var(--muto); font-size: 12px; }

/* ---------- topbar ---------- */
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--bordo);
  padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 10;
}
.topbar-right { display: flex; align-items: center; gap: 14px; }
.archivio-info { color: var(--muto); font-size: 12px; }
.btn-ghost {
  background: none; border: 1px solid var(--bordo); color: var(--muto);
  padding: 6px 14px; border-radius: 8px; cursor: pointer; font-size: 13px;
}
.btn-ghost:hover { color: var(--navy); border-color: var(--navy); }

/* ---------- login ---------- */
.login-body { display: flex; align-items: center; justify-content: center; background: linear-gradient(160deg, #F4F6FA 0%, #E8EDF6 100%); }
.login-card {
  background: var(--card); border: 1px solid var(--bordo); border-radius: 18px;
  padding: 40px 44px; width: min(420px, 92vw);
  box-shadow: 0 18px 50px rgba(16, 38, 92, .10);
}
.login-card .login-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; }
.login-card h1 { margin: 0 0 4px; font-family: Georgia, serif; color: var(--navy); }
.login-sub { margin: 0 0 26px; color: var(--muto); font-size: 14px; }
.login-card label { display: block; font-size: 13px; color: var(--muto); margin-bottom: 6px; }
.login-card input[type="password"] {
  width: 100%; padding: 12px 14px; font-size: 15px;
  border: 1px solid var(--bordo); border-radius: 10px; margin-bottom: 16px;
}
.login-card input[type="password"]:focus { outline: 2px solid var(--navy); border-color: var(--navy); }
.login-error { color: #B4232A; font-size: 13px; margin: 0 0 12px; }
.login-foot { margin-top: 22px; color: var(--muto); font-size: 12px; }
.btn-primary {
  width: 100%; background: var(--navy); color: #fff; border: none;
  padding: 12px; border-radius: 10px; font-size: 15px; cursor: pointer;
}
.btn-primary:hover { background: var(--navy-dark); }

/* ---------- chat ---------- */
.chat-wrap { flex: 1; width: min(880px, 100%); margin: 0 auto; display: flex; flex-direction: column; padding: 18px 16px 0; min-height: 0; }
.messages { flex: 1; overflow-y: auto; padding: 6px 4px 18px; display: flex; flex-direction: column; gap: 14px; }

.msg { display: flex; gap: 10px; align-items: flex-start; }
.msg-avatar {
  flex: 0 0 32px; width: 32px; height: 32px; border-radius: 9px;
  background: var(--navy); color: #fff; font-family: Georgia, serif; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
}
.msg.user { flex-direction: row-reverse; }
.msg-bubble {
  max-width: 78%; padding: 12px 16px; border-radius: var(--raggio);
  background: var(--card); border: 1px solid var(--bordo); line-height: 1.55; font-size: 15px;
  overflow-wrap: break-word;
}
.msg.user .msg-bubble { background: var(--navy); color: #fff; border-color: var(--navy); }
.msg-bubble p { margin: 0 0 8px; }
.msg-bubble p:last-child { margin-bottom: 0; }
.msg-bubble ul { margin: 6px 0 8px; padding-left: 20px; }
.msg-bubble strong { color: inherit; }
.msg.user .msg-bubble strong { color: #fff; }
.msg-bubble .typing-dots::after { content: "…"; animation: blink 1.2s infinite; }
@keyframes blink { 50% { opacity: .3; } }

.cit {
  display: inline-block; min-width: 18px; text-align: center;
  background: #EAF0FB; color: var(--navy); border-radius: 6px;
  font-size: 11.5px; font-weight: 600; padding: 1px 5px; margin: 0 1px;
  cursor: pointer; vertical-align: 1px;
}
.cit:hover { background: var(--navy); color: #fff; }

/* fonti */
.fonti { margin-top: 8px; border-top: 1px dashed var(--bordo); padding-top: 8px; }
.fonti-toggle {
  background: none; border: none; color: var(--navy); font-size: 13px; font-weight: 600;
  cursor: pointer; padding: 2px 0;
}
.fonti-lista { margin-top: 8px; display: flex; flex-direction: column; gap: 8px; }
.fonte {
  display: flex; gap: 10px; align-items: flex-start;
  background: #F7F9FD; border: 1px solid var(--bordo); border-radius: 10px;
  padding: 8px 12px; font-size: 13px;
}
.fonte .cit { flex: 0 0 auto; margin-top: 1px; }
.fonte-testo { flex: 1; color: var(--testo); }
.fonte-testo .titolo { font-weight: 600; }
.fonte-testo .meta { color: var(--muto); font-size: 12px; margin-top: 2px; }
.fonte a.pdf-link {
  flex: 0 0 auto; color: var(--navy); font-size: 12px; font-weight: 600;
  border: 1px solid var(--navy); border-radius: 7px; padding: 3px 9px; text-decoration: none;
}
.fonte a.pdf-link:hover { background: var(--navy); color: #fff; }

/* feedback */
.feedback { margin-top: 6px; display: flex; gap: 6px; }
.feedback button {
  background: none; border: 1px solid var(--bordo); border-radius: 8px;
  padding: 3px 10px; font-size: 13px; cursor: pointer; color: var(--muto);
}
.feedback button:hover { color: var(--navy); border-color: var(--navy); }
.feedback button.attivo { background: var(--navy); color: #fff; border-color: var(--navy); }

/* suggerimenti */
.suggerimenti { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 42px 8px; }
.chip {
  background: var(--card); border: 1px solid var(--bordo); color: var(--navy);
  border-radius: 999px; padding: 7px 14px; font-size: 13px; cursor: pointer;
}
.chip:hover { border-color: var(--navy); background: #EAF0FB; }

/* composer */
.composer {
  display: flex; gap: 10px; align-items: flex-end;
  background: var(--card); border: 1px solid var(--bordo); border-radius: 14px;
  padding: 10px 12px; margin-top: 4px;
  box-shadow: 0 6px 24px rgba(16, 38, 92, .06);
}
.composer textarea {
  flex: 1; border: none; resize: none; font-size: 15px; font-family: inherit;
  max-height: 160px; outline: none; background: transparent; line-height: 1.5;
}
.btn-send {
  background: var(--navy); border: none; color: #fff; width: 40px; height: 40px;
  border-radius: 10px; cursor: pointer; font-size: 16px;
}
.btn-send:disabled { opacity: .45; cursor: default; }
.composer-note { color: var(--muto); font-size: 11.5px; text-align: center; margin: 8px 0 14px; }

.errore-bubble { border-color: #E4B6B8; background: #FDF3F3; color: #8C2F34; }

@media (max-width: 640px) {
  .msg-bubble { max-width: 88%; }
  .suggerimenti { padding: 0 0 8px; }
  .archivio-info { display: none; }
}