:root {
  --bg: #0f1117;
  --bg2: #181c27;
  --bg3: #1e2336;
  --bg4: #252b40;
  --border: rgba(255,255,255,0.07);
  --border2: rgba(255,255,255,0.13);
  --text: #e8eaf0;
  --text2: #8b92a8;
  --text3: #555d76;
  --accent: #f5a623;
  --accent2: #f7c25a;
  --blue: #4a9eff;
  --blue2: #2d7dd2;
  --green: #3ecf8e;
  --green2: #27a870;
  --red: #f05151;
  --red2: #c03a3a;
  --orange: #f5a623;
  --sidebar-w: 220px;
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'DM Sans', sans-serif;
  --mono: 'DM Mono', monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; font-family: var(--font); background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5; }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 4px; }

/* ── LOGIN ── */
#login-screen {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  background-image: radial-gradient(ellipse 60% 50% at 50% -10%, rgba(245,166,35,0.12) 0%, transparent 70%);
}
.login-card {
  width: 360px; background: var(--bg2); border: 1px solid var(--border2);
  border-radius: 20px; padding: 40px 36px; position: relative; overflow: hidden;
}
.login-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo-icon {
  width: 64px; height: 64px; margin: 0 auto 12px;
  background: var(--bg3); border-radius: 16px; border: 1px solid var(--border2);
  display: flex; align-items: center; justify-content: center; font-size: 28px;
}
.login-logo h1 { font-size: 22px; font-weight: 600; letter-spacing: -0.5px; }
.login-logo p { font-size: 12px; color: var(--text2); margin-top: 3px; font-family: var(--mono); }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; color: var(--text2); margin-bottom: 6px; font-weight: 500; letter-spacing: 0.03em; text-transform: uppercase; }
.form-group input {
  width: 100%; background: var(--bg3); border: 1px solid var(--border2);
  border-radius: var(--radius-sm); padding: 10px 14px; color: var(--text);
  font-family: var(--font); font-size: 14px; outline: none; transition: border-color 0.2s;
}
.form-group input:focus { border-color: var(--accent); }
.btn-login {
  width: 100%; padding: 12px; background: var(--accent); color: #0f1117;
  border: none; border-radius: var(--radius-sm); font-family: var(--font);
  font-size: 14px; font-weight: 600; cursor: pointer; transition: opacity 0.2s;
  margin-top: 8px;
}
.btn-login:hover { opacity: 0.88; }
.login-hint { text-align: center; margin-top: 16px; font-size: 12px; color: var(--text3); }

/* ── APP SHELL ── */
#app { display: none; min-height: 100vh; }

/* ── SIDEBAR ── */
.sidebar {
  position: fixed; top: 0; left: 0; bottom: 0; width: var(--sidebar-w);
  background: var(--bg2); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; z-index: 100;
  transition: transform 0.3s;
}
.sidebar-logo {
  padding: 24px 20px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
}
.sidebar-logo-icon {
  width: 36px; height: 36px; background: var(--bg3); border-radius: 10px;
  border: 1px solid var(--border2); display: flex; align-items: center;
  justify-content: center; font-size: 18px; flex-shrink: 0;
}
.sidebar-logo-text h2 { font-size: 15px; font-weight: 600; }
.sidebar-logo-text p { font-size: 10px; color: var(--text2); font-family: var(--mono); }
.sidebar-nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.nav-section-label { font-size: 10px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 500; padding: 8px 10px 4px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 9px 10px;
  border-radius: var(--radius-sm); cursor: pointer; transition: background 0.15s;
  color: var(--text2); font-size: 13px; font-weight: 400; margin-bottom: 1px;
  border: none; background: none; width: 100%; text-align: left;
}
.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: rgba(245,166,35,0.12); color: var(--accent); font-weight: 500; }
.nav-item i { width: 18px; text-align: center; font-size: 14px; }
.sidebar-footer {
  padding: 16px 10px; border-top: 1px solid var(--border);
}
.user-badge {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px;
  background: var(--bg3); border-radius: var(--radius-sm);
  cursor: pointer;
}
.user-avatar {
  width: 30px; height: 30px; background: var(--accent); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: #0f1117; flex-shrink: 0;
}
.user-info { flex: 1; min-width: 0; }
.user-info span { display: block; font-size: 12px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-info small { font-size: 11px; color: var(--text3); }
.user-badge i { color: var(--text3); font-size: 12px; }

/* ── MAIN ── */
.main {
  margin-left: var(--sidebar-w); min-height: 100vh;
  background: var(--bg); display: flex; flex-direction: column;
}
.topbar {
  height: 56px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 24px;
  gap: 12px; position: sticky; top: 0; z-index: 50;
  background: rgba(15,17,23,0.85); backdrop-filter: blur(8px);
}
.topbar-title { font-size: 15px; font-weight: 600; flex: 1; }
.topbar-btn {
  display: flex; align-items: center; gap: 7px; padding: 7px 14px;
  background: var(--accent); color: #0f1117; border: none;
  border-radius: var(--radius-sm); font-family: var(--font);
  font-size: 13px; font-weight: 600; cursor: pointer; transition: opacity 0.2s;
}
.topbar-btn:hover { opacity: 0.85; }
.topbar-btn-outline {
  display: flex; align-items: center; gap: 7px; padding: 7px 14px;
  background: transparent; color: var(--text); border: 1px solid var(--border2);
  border-radius: var(--radius-sm); font-family: var(--font);
  font-size: 13px; font-weight: 400; cursor: pointer; transition: background 0.15s;
}
.topbar-btn-outline:hover { background: var(--bg3); }
.page-content { padding: 24px; flex: 1; max-width: 1100px; }

/* ── PAGES ── */
.page { display: none; }
.page.active { display: block; }

/* ── CARDS ── */
.card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
}
.card-sm { padding: 14px 16px; }

/* ── STAT GRID ── */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); gap: 12px; margin-bottom: 24px; }
.stat-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px;
}
.stat-label { font-size: 11px; color: var(--text2); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.stat-value { font-size: 26px; font-weight: 600; letter-spacing: -0.5px; font-family: var(--mono); }
.stat-sub { font-size: 11px; color: var(--text3); margin-top: 4px; }
.stat-accent { color: var(--accent); }
.stat-blue { color: var(--blue); }
.stat-green { color: var(--green); }
.stat-red { color: var(--red); }

/* ── SECTION TITLE ── */
.section-title { font-size: 13px; font-weight: 600; color: var(--text2); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 12px; }

/* ── TABLE ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 11px 12px; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg3); cursor: pointer; }
.td-mono { font-family: var(--mono); font-size: 12px; }
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11px; padding: 3px 8px; border-radius: 20px; font-weight: 500; white-space: nowrap;
}
.badge-energy { background: rgba(74,158,255,0.15); color: var(--blue); }
.badge-gas { background: rgba(245,166,35,0.15); color: var(--orange); }
.badge-incomplete { background: rgba(240,81,81,0.15); color: var(--red); }
.badge-auto { background: rgba(62,207,142,0.12); color: var(--green); }
.badge-manual { background: rgba(255,255,255,0.06); color: var(--text2); }
.td-actions { display: flex; gap: 6px; }
.btn-icon {
  width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--border2);
  background: transparent; color: var(--text2); cursor: pointer; transition: all 0.15s;
  display: flex; align-items: center; justify-content: center; font-size: 12px;
}
.btn-icon:hover { background: var(--bg4); color: var(--text); }
.btn-icon.danger:hover { background: rgba(240,81,81,0.12); color: var(--red); border-color: rgba(240,81,81,0.3); }

/* ── GRID 2 COL ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* ── DETAIL VIEW ── */
.detail-header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.btn-back {
  width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--border2);
  background: transparent; color: var(--text2); cursor: pointer;
  display: flex; align-items: center; justify-content: center; font-size: 14px;
  transition: all 0.15s;
}
.btn-back:hover { background: var(--bg3); color: var(--text); }
.detail-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.meta-pill {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11px; padding: 4px 10px; border-radius: 20px;
  background: var(--bg3); border: 1px solid var(--border); color: var(--text2);
}
.reading-table { width: 100%; border-collapse: collapse; }
.reading-table th { font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.04em; font-weight: 500; padding: 6px 12px; text-align: right; border-bottom: 1px solid var(--border); }
.reading-table th:first-child { text-align: left; }
.reading-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 13px; text-align: right; font-family: var(--mono); }
.reading-table td:first-child { text-align: left; font-family: var(--font); color: var(--text2); font-size: 12px; }
.reading-table tr:last-child td { border-bottom: none; }
.delta-pos { color: var(--red); }
.delta-neg { color: var(--green); }
.delta-neu { color: var(--text3); }
.section-card-head {
  font-size: 12px; font-weight: 600; color: var(--text2); text-transform: uppercase;
  letter-spacing: 0.06em; padding: 12px 16px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
}
.section-card-head i { font-size: 13px; }

/* ── FORM ── */
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.form-group-inline label { display: block; font-size: 11px; color: var(--text2); margin-bottom: 5px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; }
.form-group-inline input, .form-group-inline select {
  width: 100%; background: var(--bg3); border: 1px solid var(--border2);
  border-radius: var(--radius-sm); padding: 9px 12px; color: var(--text);
  font-family: var(--font); font-size: 14px; outline: none; transition: border-color 0.2s;
}
.form-group-inline input:focus, .form-group-inline select:focus { border-color: var(--accent); }
.form-group-inline select option { background: var(--bg3); }
.form-group-inline textarea {
  width: 100%; background: var(--bg3); border: 1px solid var(--border2);
  border-radius: var(--radius-sm); padding: 9px 12px; color: var(--text);
  font-family: var(--font); font-size: 14px; outline: none; resize: vertical;
  min-height: 70px; transition: border-color 0.2s;
}
.form-group-inline textarea:focus { border-color: var(--accent); }
.form-section-title {
  font-size: 12px; font-weight: 600; color: var(--accent); text-transform: uppercase;
  letter-spacing: 0.06em; margin: 20px 0 12px; display: flex; align-items: center; gap: 7px;
}
.form-section-title i { font-size: 13px; }
.form-actions { display: flex; gap: 10px; margin-top: 24px; justify-content: flex-end; }
.btn-primary {
  padding: 9px 20px; background: var(--accent); color: #0f1117; border: none;
  border-radius: var(--radius-sm); font-family: var(--font); font-size: 13px; font-weight: 600; cursor: pointer; transition: opacity 0.2s;
}
.btn-primary:hover { opacity: 0.85; }
.btn-secondary {
  padding: 9px 20px; background: transparent; color: var(--text2); border: 1px solid var(--border2);
  border-radius: var(--radius-sm); font-family: var(--font); font-size: 13px; cursor: pointer; transition: background 0.15s;
}
.btn-secondary:hover { background: var(--bg3); }
.btn-danger {
  padding: 9px 20px; background: rgba(240,81,81,0.12); color: var(--red);
  border: 1px solid rgba(240,81,81,0.25); border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 13px; cursor: pointer; transition: background 0.15s;
}
.btn-danger:hover { background: rgba(240,81,81,0.2); }

/* ── TOGGLE ── */
.toggle-wrap { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); }
.toggle-wrap:last-child { border-bottom: none; }
.toggle-label { font-size: 13px; }
.toggle-desc { font-size: 11px; color: var(--text2); margin-top: 2px; }
.toggle {
  position: relative; width: 40px; height: 22px; flex-shrink: 0;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg4); border-radius: 22px; transition: 0.2s;
}
.toggle-slider::before {
  position: absolute; content: ''; height: 16px; width: 16px;
  left: 3px; bottom: 3px; background: var(--text2); border-radius: 50%; transition: 0.2s;
}
.toggle input:checked + .toggle-slider { background: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); background: #0f1117; }

/* ── CHART CONTAINER ── */
.chart-wrap { position: relative; height: 220px; }

/* ── FILTER BAR ── */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; align-items: center; }
.filter-select {
  background: var(--bg2); border: 1px solid var(--border2); border-radius: var(--radius-sm);
  padding: 7px 12px; color: var(--text); font-family: var(--font); font-size: 13px; outline: none; cursor: pointer;
}
.filter-select:focus { border-color: var(--accent); }
.filter-label { font-size: 12px; color: var(--text2); }

/* ── ABITAZIONE CARD ── */
.abitazione-card {
  background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; display: flex; align-items: flex-start; gap: 14px;
}
.abitazione-icon {
  width: 42px; height: 42px; background: var(--bg3); border-radius: 10px;
  display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0;
}
.abitazione-info { flex: 1; min-width: 0; }
.abitazione-info h3 { font-size: 15px; font-weight: 600; margin-bottom: 3px; }
.abitazione-info p { font-size: 12px; color: var(--text2); }
.abitazione-flags { display: flex; gap: 6px; margin-top: 8px; }
.flag-chip {
  font-size: 11px; padding: 3px 8px; border-radius: 20px; font-weight: 500;
  background: rgba(62,207,142,0.1); color: var(--green); border: 1px solid rgba(62,207,142,0.2);
}
.flag-chip.off { background: rgba(255,255,255,0.04); color: var(--text3); border-color: var(--border); }
.abitazione-actions { display: flex; gap: 8px; }

/* ── ALERT ── */
.alert { padding: 12px 16px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 16px; display: flex; align-items: flex-start; gap: 10px; }
.alert-warning { background: rgba(245,166,35,0.1); border: 1px solid rgba(245,166,35,0.2); color: var(--accent); }
.alert-info { background: rgba(74,158,255,0.1); border: 1px solid rgba(74,158,255,0.2); color: var(--blue); }

/* ── MODAL CONFIRM ── */
#modal-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  z-index: 1000; align-items: center; justify-content: center;
}
#modal-overlay.open { display: flex; }
.modal-box {
  background: var(--bg2); border: 1px solid var(--border2); border-radius: var(--radius);
  padding: 28px; width: 360px; max-width: 90vw;
}
.modal-box h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; }
.modal-box p { font-size: 13px; color: var(--text2); margin-bottom: 22px; line-height: 1.6; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ── EMPTY STATE ── */
.empty-state { text-align: center; padding: 48px 20px; color: var(--text3); }
.empty-state i { font-size: 36px; margin-bottom: 12px; display: block; }
.empty-state p { font-size: 13px; }

/* ── RESPONSIVE MOBILE ── */
.mob-topbar {
  display: none; height: 52px; background: var(--bg2); border-bottom: 1px solid var(--border);
  align-items: center; padding: 0 16px; gap: 12px; position: sticky; top: 0; z-index: 100;
}
.mob-menu-btn {
  width: 34px; height: 34px; background: transparent; border: none; color: var(--text);
  font-size: 18px; cursor: pointer; display: flex; align-items: center; justify-content: center;
}
.mob-title { font-size: 15px; font-weight: 600; flex: 1; }
.mob-bottom-nav {
  display: none; position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--bg2); border-top: 1px solid var(--border); z-index: 100;
}
.mob-bottom-nav .nav-tabs { display: flex; }
.mob-bottom-nav .nav-tab {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  padding: 10px 0 8px; gap: 3px; cursor: pointer; background: none; border: none; color: var(--text2);
}
.mob-bottom-nav .nav-tab i { font-size: 20px; }
.mob-bottom-nav .nav-tab span { font-size: 10px; }
.mob-bottom-nav .nav-tab.active { color: var(--accent); }
.sidebar-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 99;
}
.sidebar-overlay.open { display: block; }

/* ── DIVISORE ── */
.divider { height: 1px; background: var(--border); margin: 20px 0; }

@media (max-width: 768px) {
  .sidebar-logo { display: none; }
  .sidebar-nav { padding-top: 60px; }
  .sidebar-footer { margin-bottom: 64px; }
  .sidebar { padding-bottom: 0; }
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .mob-topbar { display: flex; }
  .mob-bottom-nav { display: block; }
  .page-content { padding: 16px 14px 80px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .topbar { display: none; }
}

/* ── TOAST ── */
#toast-container { position: fixed; bottom: 80px; right: 20px; z-index: 2000; display: flex; flex-direction: column; gap: 8px; }
@media (min-width: 769px) { #toast-container { bottom: 20px; } }
.toast { padding: 10px 16px; border-radius: var(--radius-sm); font-size: 13px; display: flex; align-items: center; gap: 8px; opacity: 0; transform: translateX(20px); transition: all 0.25s; max-width: 320px; }
.toast.show { opacity: 1; transform: translateX(0); }
.toast-info    { background: var(--bg3); border: 1px solid var(--border2); color: var(--text); }
.toast-success { background: rgba(62,207,142,0.12); border: 1px solid rgba(62,207,142,0.25); color: var(--green); }
.toast-error   { background: rgba(240,81,81,0.12); border: 1px solid rgba(240,81,81,0.25); color: var(--red); }
.toast-warning { background: rgba(245,166,35,0.12); border: 1px solid rgba(245,166,35,0.25); color: var(--accent); }

/* ── SPINNER ── */
.spinner-wrap { display: flex; align-items: center; justify-content: center; padding: 48px; }
.spinner { width: 28px; height: 28px; border: 2px solid var(--border2); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── ALERT ── */
.alert-danger { background: rgba(240,81,81,0.1); border: 1px solid rgba(240,81,81,0.2); color: var(--red); }