:root {
  --bg:#ffffff; --panel:#ffffff; --panel-2:#fbf1f2; --line:#e6d3d6;
  --text:#5c1526; --muted:#9a6c74; --accent:#7a1f33; --accent-2:#a63a4f;
  --ok:#2f7d52; --warn:#b9770e; --bad:#c0392b; --chip:#f6e9ea;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Lexend',system-ui,sans-serif;background:var(--bg);color:var(--text)}
.hidden{display:none!important}

/* ============ LANGUAGE SWITCHER ============ */
.lang-switch{appearance:none;-webkit-appearance:none;font-family:inherit;font-size:12.5px;font-weight:600;
  padding:7px 26px 7px 12px;border-radius:999px;border:1px solid var(--line);background:var(--panel-2);color:var(--text);
  cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%239a6c74'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 11.168l3.71-3.938a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 8px center;background-size:14px}
.lang-switch:hover{border-color:var(--accent)}
.lang-switch-login{position:fixed;top:20px;right:20px;z-index:10}

/* ============ LOGIN ============ */
.login-body{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(1200px 600px at 70% -10%,rgba(122,31,51,.06),transparent),
             radial-gradient(800px 500px at 10% 110%,rgba(166,58,79,.05),transparent),var(--bg)}
.login-card{width:380px;background:linear-gradient(160deg,var(--panel-2),var(--panel));border:1px solid var(--line);
  border-radius:20px;padding:40px 34px;box-shadow:0 30px 80px rgba(92,21,38,.14)}
.brand-brand-lg{display:flex;justify-content:center;margin-bottom:18px}
.logo-mark{width:64px;height:64px;border-radius:18px;overflow:hidden;box-shadow:0 10px 30px rgba(122,31,51,.35);flex-shrink:0}
.logo-mark img{width:100%;height:100%;display:block}
.login-card h1{text-align:center;font-size:26px;margin-bottom:6px}
.tagline{text-align:center;color:var(--muted);margin-bottom:28px;font-size:14px}
#loginForm label{display:block;font-size:13px;color:var(--muted);margin-bottom:16px;font-weight:600}
#loginForm input{width:100%;margin-top:7px;padding:12px 14px;border-radius:12px;border:1px solid var(--line);
  background:#fdf7f8;color:var(--text);font-size:15px;outline:none}
#loginForm input:focus{border-color:var(--accent)}
#loginForm button{width:100%;padding:14px;border:none;border-radius:12px;font-weight:700;font-size:15px;color:#fff;cursor:pointer;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));margin-top:6px}
#loginForm button:hover{filter:brightness(1.1)}
.hint{text-align:center;margin-top:18px;font-size:12px;color:var(--muted)}
.hint code{background:var(--chip);padding:2px 7px;border-radius:6px}

/* ============ APP LAYOUT ============ */
.app{display:flex;min-height:100vh}
.sidebar{width:250px;background:linear-gradient(180deg,var(--panel-2),var(--panel));border-right:1px solid var(--line);
  padding:22px 16px;display:flex;flex-direction:column;gap:22px;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:12px;padding:4px 8px}
.brand-logo{width:42px;height:42px;border-radius:12px;overflow:hidden;box-shadow:0 6px 16px rgba(122,31,51,.3);flex-shrink:0}
.brand-logo img{width:100%;height:100%;display:block}
.brand h1{font-size:16px}.brand p{font-size:11px;color:var(--muted)}
.nav{display:flex;flex-direction:column;gap:4px}
.nav-item{display:flex;align-items:center;gap:10px;padding:11px 12px;border:none;background:transparent;color:var(--muted);
  font-size:14px;font-weight:600;border-radius:11px;cursor:pointer;text-align:left;font-family:inherit}
.nav-item span{font-size:16px;width:22px;text-align:center}
.nav-item:hover{background:rgba(122,31,51,.08);color:var(--text)}
.nav-item.active{background:linear-gradient(90deg,rgba(122,31,51,.14),transparent);color:var(--accent);border-left:3px solid var(--accent)}
.nav-admin{margin-top:6px;background:rgba(47,125,82,.08);border:1px dashed rgba(47,125,82,.35)}
.nav-sep{height:1px;background:var(--line);margin:8px 4px}
.locale-box{margin-top:auto;display:flex;gap:12px;align-items:center;padding:12px;border-radius:14px;background:rgba(122,31,51,.05);border:1px solid var(--line)}
.locale-avatar{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;background:var(--accent);color:#fff}
.locale-box strong{font-size:13px}.locale-box p{font-size:11px;color:var(--muted)}

.main{flex:1;padding:26px 34px;overflow-y:auto}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.topbar h2{font-size:22px}.subtitle{color:var(--muted);font-size:13px;margin-top:4px}
.topbar-right{display:flex;align-items:center;gap:12px}
.badge-live{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:rgba(47,125,82,.1);border:1px solid rgba(47,125,82,.35);font-size:12px;font-weight:600}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--ok);animation:p 1.6s infinite}
@keyframes p{0%{box-shadow:0 0 0 0 rgba(47,125,82,.5)}70%{box-shadow:0 0 0 9px rgba(47,125,82,0)}}
.btn-logout{padding:8px 16px;border-radius:10px;border:1px solid var(--line);background:var(--panel-2);color:var(--muted);font-weight:600;cursor:pointer;font-family:inherit}
.btn-logout:hover{color:var(--text);border-color:var(--accent)}

/* ============ CHAT ============ */
.chat-section{background:linear-gradient(160deg,var(--panel-2),var(--panel));border:1px solid var(--line);border-radius:18px;padding:20px;margin-bottom:26px}
.chat-header{display:flex;gap:14px;align-items:center;margin-bottom:16px}
.ai-avatar{width:44px;height:44px;border-radius:13px;overflow:hidden;box-shadow:0 6px 16px rgba(122,31,51,.3);flex-shrink:0}
.ai-avatar img{width:100%;height:100%;display:block}
.chat-header strong{font-size:15px}.chat-header p{font-size:12px;color:var(--muted)}
.chat-log{max-height:260px;overflow-y:auto;display:flex;flex-direction:column;gap:12px;margin-bottom:14px;padding-right:4px}
.msg{padding:13px 16px;border-radius:14px;font-size:14px;line-height:1.55;max-width:80%}
.msg.ai{background:#faf3f4;border:1px solid var(--line);align-self:flex-start}
.msg.user{background:linear-gradient(135deg,rgba(122,31,51,.16),rgba(166,58,79,.12));border:1px solid rgba(122,31,51,.35);align-self:flex-end}
.msg ul{margin:6px 0 0 18px}.msg li{margin-bottom:3px}
.quick-asks{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.quick-asks button{padding:9px 15px;border-radius:999px;border:1px solid var(--line);background:var(--chip);color:var(--text);font-size:13px;font-weight:600;cursor:pointer;font-family:inherit}
.quick-asks button:hover{border-color:var(--accent);background:#f0d9dc}
.chat-form{display:flex;gap:10px}
.chat-form input{flex:1;padding:13px 16px;border-radius:12px;border:1px solid var(--line);background:#fdf7f8;color:var(--text);font-size:14px;outline:none;font-family:inherit}
.chat-form input:focus{border-color:var(--accent)}
.chat-form button{padding:13px 22px;border:none;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:700;cursor:pointer;font-family:inherit}

/* ============ VIEWS / CARDS ============ */
.grid{display:grid;gap:18px;margin-bottom:26px}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.card{background:linear-gradient(160deg,var(--panel-2),var(--panel));border:1px solid var(--line);border-radius:16px;padding:20px}
.kpi .label{font-size:12px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.4px}
.kpi .value{font-size:30px;font-weight:800;margin-top:8px}
.kpi .delta{display:inline-block;margin-top:8px;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:700}
.delta.up-bad{background:rgba(192,57,43,.14);color:var(--bad)}
.delta.up-good{background:rgba(47,125,82,.14);color:var(--ok)}
.section-title{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.alert-list{display:flex;flex-direction:column;gap:10px}
.alert{display:flex;gap:12px;padding:13px 15px;border-radius:12px;font-size:13.5px;line-height:1.45;border-left:4px solid var(--line)}
.alert.alta{background:rgba(192,57,43,.08);border-left-color:var(--bad)}
.alert.media{background:rgba(185,119,14,.08);border-left-color:var(--warn)}
.alert.bassa{background:rgba(122,31,51,.08);border-left-color:var(--accent)}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{text-align:left;padding:10px 12px;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.4px;border-bottom:1px solid var(--line)}
td{padding:11px 12px;border-bottom:1px solid rgba(92,21,38,.08)}
tr:hover td{background:rgba(122,31,51,.035)}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:11.5px;font-weight:700}
.pill.ok{background:rgba(47,125,82,.14);color:var(--ok)}
.pill.warn{background:rgba(185,119,14,.14);color:var(--warn)}
.pill.bad{background:rgba(192,57,43,.14);color:var(--bad)}

/* ============ UPLOAD VIEW ============ */
.dropzone{border:2px dashed var(--line);border-radius:18px;padding:46px 30px;text-align:center;cursor:pointer;background:rgba(122,31,51,.03);transition:.2s}
.dropzone:hover,.dropzone.drag{border-color:var(--accent);background:rgba(122,31,51,.08)}
.dz-icon{font-size:44px;margin-bottom:12px}
.dz-title{font-size:17px;font-weight:700}.dz-sub{color:var(--muted);font-size:13px;margin-top:8px;line-height:1.6}
.dz-btn{display:inline-block;margin-top:18px;padding:12px 26px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:700;cursor:pointer}
.file-type-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-top:22px}
.ftile{padding:16px;border-radius:14px;background:var(--panel-2);border:1px solid var(--line)}
.ftile .ico{font-size:24px}.ftile strong{display:block;font-size:13.5px;margin-top:8px}
.ftile p{font-size:11.5px;color:var(--muted);margin-top:5px;line-height:1.4}
.upload-status{margin-top:18px;padding:16px;border-radius:12px;font-size:13.5px;display:none}
.upload-status.ok{display:block;background:rgba(47,125,82,.1);border:1px solid rgba(47,125,82,.35)}
.upload-status.err{display:block;background:rgba(192,57,43,.1);border:1px solid rgba(192,57,43,.35)}
.preview-table td:first-child{color:var(--muted);font-weight:600;width:180px}

@media(max-width:900px){
  .app{flex-direction:column}
  .sidebar{width:100%;height:auto;position:static}
  .grid.cols-3{grid-template-columns:1fr}
}

/* ============ MOBILE (telefono) ============ */
@media(max-width:600px){
  html,body{overflow-x:hidden;max-width:100vw}

  /* login */
  .lang-switch-login{top:12px;right:12px}
  .login-card{width:100%;max-width:380px;padding:30px 22px}

  /* input/select/textarea a 16px: evita lo zoom automatico di iOS Safari al focus */
  input,select,textarea{font-size:16px!important}

  /* sidebar -> barra di navigazione orizzontale scorrevole */
  .sidebar{padding:12px 12px 10px;gap:12px}
  .brand{padding:2px 2px}
  .brand h1{font-size:15px}
  .brand p{font-size:10.5px}
  .nav{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;gap:6px;padding-bottom:6px;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
  .nav-item{flex-shrink:0;white-space:nowrap;padding:9px 13px;font-size:12.5px}
  .nav-item span{font-size:14px;width:auto}
  .nav-item.active{border-left:none;border-bottom:3px solid var(--accent)}
  .nav-sep{display:none}
  .locale-box{display:none}

  /* topbar: impila titolo e azioni, evita di stringere tutto su una riga */
  .main{padding:16px 14px}
  .topbar{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:18px}
  .topbar h2{font-size:19px}
  .topbar-right{width:100%;justify-content:space-between;flex-wrap:wrap;gap:8px}
  .badge-live{font-size:11px;padding:6px 11px}

  /* chat */
  .chat-section{padding:14px;border-radius:14px}
  .chat-header{gap:10px;margin-bottom:12px}
  .ai-avatar{width:36px;height:36px}
  .msg{max-width:92%;font-size:13.5px}
  .chat-form{flex-direction:column}
  .chat-form button{width:100%}

  /* card e kpi più compatti */
  .card{padding:16px;border-radius:14px}
  .kpi .value{font-size:24px}
  .section-title{font-size:14.5px}

  /* upload */
  .dropzone{padding:28px 16px;border-radius:14px}
  .dz-icon{font-size:34px;margin-bottom:8px}
  .dz-title{font-size:15px}
  .file-type-grid{grid-template-columns:1fr}
}

/* ============ POLISH: profondità, transizioni, dettagli ============ */
.card, .chat-section{box-shadow:0 14px 34px rgba(92,21,38,.08);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{border-color:rgba(122,31,51,.35)}
.kpi{transition:transform .18s ease}
.kpi:hover{transform:translateY(-2px)}
.nav-item{transition:background .15s ease,color .15s ease}
.dz-btn,.quick-asks button,#loginForm button,.chat-form button{transition:transform .15s ease,filter .15s ease,box-shadow .15s ease}
.dz-btn:hover,.quick-asks button:hover{transform:translateY(-1px)}
#loginForm button:hover,.chat-form button:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(122,31,51,.35)}
.login-card{position:relative;overflow:hidden}
.login-card::before{content:'';position:absolute;top:-46px;right:-46px;width:190px;height:190px;border-radius:50%;
  background:radial-gradient(circle,rgba(166,58,79,.14),transparent 70%);pointer-events:none}
.login-card::after{content:'';position:absolute;bottom:-60px;left:-40px;width:160px;height:160px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,31,51,.1),transparent 70%);pointer-events:none}
.brand h1{letter-spacing:.3px}
.login-card h1{letter-spacing:.6px;background:linear-gradient(135deg,#5c1526,#a63a4f);-webkit-background-clip:text;background-clip:text;color:transparent}
.pill{letter-spacing:.2px}
.section-title{letter-spacing:.1px}