:root{
  --ink:#202124;
  --muted:#5f6368;
  --paper:#f7f8fa;
  --card:#ffffff;
  --line:#dadce0;
  --line-soft:#eceff3;
  --accent:#1a73e8;
  --accent-soft:#e8f0fe;
  --green:#188038;
  --orange:#e37400;
  --red:#b3261e;
  --shadow:0 1px 2px rgba(60,64,67,.08),0 1px 3px rgba(60,64,67,.08);
  --radius:12px;
}
*{box-sizing:border-box}
html{background:var(--paper);color:var(--ink);color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;scroll-behavior:smooth}
body{min-height:100vh;margin:0;background:var(--paper)}
button,input{font:inherit}
button,a{transition:background-color .16s,border-color .16s,color .16s,box-shadow .16s}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(26,115,232,.28);outline-offset:2px}

/* Accesso */
.auth-shell{min-height:100vh;display:grid;place-items:center;padding:24px}
.auth-card{width:min(420px,100%);padding:32px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:0 4px 18px rgba(60,64,67,.12)}
.brand-lockup{display:flex;align-items:center;gap:11px;font-size:.9rem;font-weight:700}
.brand-lockup img{width:38px;height:38px;border-radius:50%}
.eyebrow,.panel-kicker{margin:26px 0 8px;color:var(--accent);font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em}
.auth-card h1{margin:0;font-size:clamp(1.7rem,5vw,2.05rem);font-weight:650;line-height:1.2;letter-spacing:-.02em}
.auth-intro,.dashboard-intro p{color:var(--muted);line-height:1.55}
.auth-form{display:grid;gap:16px;margin-top:24px}
.auth-form label{display:grid;gap:7px;font-size:.83rem;font-weight:600}
.auth-form input,.period-controls input,.dialog-content input{min-height:44px;padding:9px 11px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink)}
.auth-form input:focus,.period-controls input:focus,.dialog-content input:focus{border-color:var(--accent)}
.auth-form button,.period-controls button,.dialog-content button{min-height:44px;padding:9px 16px;border:0;border-radius:6px;background:var(--accent);color:#fff;font-weight:650;cursor:pointer}
.auth-form button:hover,.period-controls button:hover,.dialog-content button:hover{background:#155fc0;box-shadow:0 1px 3px rgba(26,115,232,.24)}
.back-link{display:inline-block;margin-top:22px;color:var(--accent);font-size:.86rem;font-weight:600;text-decoration:none}
.alert{max-width:1280px;margin:16px auto;padding:12px 14px;border-radius:8px}
.alert.error{background:#fce8e6;color:var(--red);border:1px solid #f4c7c3}

/* Intestazione e struttura */
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:64px;padding:10px 22px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.96);backdrop-filter:blur(12px)}
.topbar-brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:.95rem;text-decoration:none}
.topbar-brand img{width:36px;height:36px;border-radius:50%}
.topbar-brand b{font-weight:600;color:var(--muted)}
.topbar-actions{display:flex;align-items:center;gap:8px}
.topbar-actions form{margin:0}
.topbar-actions button,.topbar-actions a,.admin-tools button{min-height:38px;padding:8px 12px;border:1px solid var(--line);border-radius:6px;background:#fff;color:#3c4043;font-size:.8rem;font-weight:600;text-decoration:none;cursor:pointer}
.topbar-actions button:hover,.topbar-actions a:hover,.admin-tools button:hover{background:#f1f3f4;border-color:#c4c7c5}
.danger{color:var(--red)!important;border-color:#efc7c4!important}
.analytics-layout{display:grid;grid-template-columns:224px minmax(0,1fr);min-height:calc(100vh - 64px)}
.analytics-sidebar{position:sticky;top:64px;align-self:start;height:calc(100vh - 64px);padding:18px 12px;border-right:1px solid var(--line);background:#fff}
.section-nav{display:grid;gap:3px}
.section-nav a{display:flex;align-items:center;min-height:42px;padding:9px 13px;border-radius:0 22px 22px 0;color:#3c4043;font-size:.86rem;font-weight:550;text-decoration:none}
.section-nav a::before{content:"";width:7px;height:7px;margin-right:12px;border:2px solid #9aa0a6;border-radius:50%}
.section-nav a:hover{background:#f1f3f4}
.section-nav a.active,.section-nav a:focus-visible{background:var(--accent-soft);color:#174ea6;font-weight:650}
.section-nav a.active::before{border-color:var(--accent);background:var(--accent)}
.sidebar-note{margin:24px 13px 0;padding-top:18px;border-top:1px solid var(--line-soft);color:#80868b;font-size:.72rem;line-height:1.5}

/* Riepilogo */
.dashboard{width:100%;max-width:1500px;margin:0 auto;padding:28px 30px 80px;overflow:hidden}
.dashboard-intro{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:end;margin-bottom:14px}
.dashboard-intro .eyebrow{margin-top:0}
.dashboard-intro h1{margin:0;font-size:clamp(1.75rem,3vw,2.25rem);font-weight:650;line-height:1.2;letter-spacing:-.02em}
.dashboard-intro p{max-width:720px;margin:8px 0 0;font-size:.92rem}
.period-controls{display:grid;grid-template-columns:150px 150px auto;gap:8px;align-items:end;padding:12px;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow)}
.period-controls label{display:grid;gap:5px;color:var(--muted);font-size:.7rem;font-weight:650}
.period-controls input{min-height:40px;font-size:.8rem}
.period-controls button{min-height:40px;white-space:nowrap}
.status-strip{display:flex;align-items:center;gap:8px;margin:14px 0;color:var(--muted);font-size:.76rem}
.status-strip b{font-weight:600;color:#3c4043}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(24,128,56,.1)}
.kpi-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:16px;scroll-margin-top:80px}
.kpi-card{min-width:0;padding:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.kpi-card span{display:block;color:var(--muted);font-size:.73rem;font-weight:600}
.kpi-card strong{display:block;margin:8px 0 5px;color:var(--ink);font-size:clamp(1.65rem,3vw,2.1rem);font-weight:600;line-height:1}
.kpi-card small{color:#80868b;font-size:.74rem}

/* Grafici e pannelli */
.dashboard-grid{display:grid;grid-template-columns:2fr 1fr;gap:16px;margin-bottom:16px}
.dashboard-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.panel{min-width:0;margin-bottom:16px;padding:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);scroll-margin-top:80px}
.dashboard-grid>.panel{margin-bottom:0}
.panel header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}
.panel-kicker{margin:0 0 6px}
.panel h2{margin:0;color:var(--ink);font-size:1.03rem;font-weight:650;line-height:1.3}
.panel-help{max-width:430px;margin:0;color:var(--muted);font-size:.72rem;line-height:1.4;text-align:right}
.privacy-chip{padding:5px 9px;border-radius:999px;background:#e6f4ea;color:#137333;font-size:.68rem;font-weight:650;white-space:nowrap}
.chart{min-height:225px;display:flex;align-items:flex-end;gap:4px;border-bottom:1px solid var(--line-soft)}
.trend-bars,.hour-bars{width:100%;height:205px;display:flex;align-items:flex-end;gap:5px;padding-top:8px}
.bar-column{flex:1;min-width:4px;display:grid;align-content:end;height:100%;gap:5px}
.bar-column i{display:block;min-height:2px;border-radius:3px 3px 0 0;background:var(--accent)}
.hour-bars .bar-column i{background:#5f86d6}
.bar-column small{overflow:hidden;color:#80868b;font-size:.58rem;text-align:center;white-space:nowrap}
.metric-list{display:grid;gap:13px}
.metric-groups{display:grid;gap:20px}
.metric-group{min-width:0}
.metric-group+.metric-group{padding-top:17px;border-top:1px solid var(--line-soft)}
.metric-group h3{margin:0 0 12px;color:#3c4043;font-size:.78rem;font-weight:650}
.metric-row{display:grid;grid-template-columns:minmax(92px,1fr) 1.5fr auto;align-items:center;gap:10px;font-size:.8rem}
.metric-row span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.metric-track{height:6px;overflow:hidden;border-radius:99px;background:#eef1f5}
.metric-track i{display:block;height:100%;border-radius:inherit;background:var(--accent)}
.metric-row b{font-size:.76rem;font-variant-numeric:tabular-nums}
.table-wrap{overflow:auto}
.data-table{width:100%;border-collapse:collapse;font-size:.8rem}
.data-table th,.data-table td{padding:11px 9px;border-bottom:1px solid var(--line-soft);text-align:left}
.data-table th{color:var(--muted);font-size:.69rem;font-weight:650}
.data-table td:not(:first-child),.data-table th:not(:first-child){text-align:right}
.session-list{display:grid;gap:9px}
.session-card{position:relative;padding:13px;padding-right:240px;border:1px solid var(--line-soft);border-radius:8px;background:#fbfcfe}
.session-meta{display:flex;flex-wrap:wrap;gap:7px 13px;color:var(--muted);font-size:.73rem}
.session-meta b{color:var(--ink)}
.session-actions{position:absolute;top:13px;right:13px;display:flex;gap:12px}
.session-actions button{background:none;border:none;padding:0;color:var(--muted);font-size:.7rem;font-weight:600;text-decoration:underline;cursor:pointer}
.session-actions button:hover{color:var(--red)}
.session-actions button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.session-path{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:10px;font-size:.76rem}
.session-path span{padding:5px 8px;border-radius:5px;background:var(--accent-soft);color:#174ea6}
.session-path i{color:#9aa0a6;font-style:normal}
.health-list{display:grid;gap:10px}
.health-item{display:flex;justify-content:space-between;gap:10px;padding-bottom:9px;border-bottom:1px solid var(--line-soft);font-size:.78rem}
.health-item b{font-weight:600;text-align:right}
.health-item b.ok{color:var(--green)}
.geo-notice{padding:15px;border:1px solid #f1d8a8;border-radius:8px;background:#fef7e0;color:#5f4b19}
.geo-notice b{display:block;font-size:.82rem}
.geo-notice p{margin:6px 0 0;font-size:.75rem;line-height:1.45}
.privacy-note{margin:16px 0 0;color:#80868b;font-size:.69rem;line-height:1.45}
.admin-tools{display:grid;gap:8px;margin-top:20px}
.admin-tools button{width:100%}
.empty{padding:28px;color:var(--muted);font-size:.82rem;text-align:center}

/* Finestre */
dialog{width:min(470px,calc(100% - 24px));padding:0;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);box-shadow:0 24px 80px rgba(60,64,67,.28)}
dialog::backdrop{background:rgba(32,33,36,.38);backdrop-filter:blur(2px)}
dialog form{position:relative;margin:0;padding:28px}
.dialog-close{position:absolute;right:12px;top:10px;width:40px;height:40px;border:0;border-radius:50%;background:none;color:var(--muted);font-size:1.5rem;cursor:pointer}
.dialog-close:hover{background:#f1f3f4}
.dialog-content{display:grid;gap:14px}
.dialog-content h2{margin:0 36px 4px 0;font-size:1.15rem}
.dialog-content label{display:grid;gap:6px;font-size:.8rem;font-weight:600}

@media(max-width:1120px){
  .analytics-layout{grid-template-columns:190px minmax(0,1fr)}
  .kpi-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dashboard-grid.three{grid-template-columns:1fr 1fr}
  .dashboard-grid.three .panel:last-child{grid-column:1/-1}
  .period-controls{grid-template-columns:135px 135px}.period-controls button{grid-column:1/-1}
}
@media(max-width:780px){
  .topbar{min-height:58px;padding:9px 12px}.topbar-brand img{width:32px;height:32px}.topbar-actions a{display:none}.topbar-actions button{min-height:36px;padding:7px 9px}
  .analytics-layout{display:block;min-height:auto}
  .analytics-sidebar{position:sticky;top:58px;z-index:20;width:100%;height:auto;padding:7px 10px;border-right:0;border-bottom:1px solid var(--line);overflow:hidden}
  .section-nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}.section-nav::-webkit-scrollbar{display:none}
  .section-nav a{flex:0 0 auto;min-height:36px;padding:7px 11px;border-radius:18px;font-size:.78rem}.section-nav a::before{display:none}.sidebar-note{display:none}
  .dashboard{padding:22px 13px 60px}.dashboard-intro{grid-template-columns:1fr;gap:16px}.period-controls{grid-template-columns:1fr 1fr auto;width:100%}.period-controls button{grid-column:auto}
  .dashboard-grid,.dashboard-grid.three{grid-template-columns:1fr;gap:12px}.dashboard-grid.three .panel:last-child{grid-column:auto}.panel{margin-bottom:12px;padding:17px}.panel-help{display:none}
  .metric-row{grid-template-columns:minmax(92px,1fr) 1fr auto}
  .data-table thead{display:none}.data-table,.data-table tbody,.data-table tr,.data-table td{display:block}.data-table tr{padding:9px 0;border-bottom:1px solid var(--line-soft)}.data-table td{display:flex;justify-content:space-between;border:0;padding:5px 0!important;text-align:right!important}.data-table td::before{content:attr(data-label);color:var(--muted);font-weight:600}
  .chart{min-height:180px}.trend-bars,.hour-bars{height:165px}
  .session-card{padding-right:13px}
  .session-actions{position:static;margin-top:12px;justify-content:flex-end}
}
@media(max-width:520px){
  .topbar-brand b{display:none}.topbar-actions{gap:5px}.topbar-actions button{font-size:.74rem}
  .dashboard-intro h1{font-size:1.7rem}.dashboard-intro p{font-size:.84rem}
  .period-controls{grid-template-columns:1fr 1fr}.period-controls button{grid-column:1/-1}
  .kpi-grid{grid-template-columns:1fr;gap:9px}.kpi-card{padding:15px}.kpi-card strong{font-size:1.8rem}
  .auth-card{padding:27px 21px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}