/* ============================================================
   luigilitti.com — Design system "Sala controllo"  v6
   Ottobre 2026
   Palette ispirata ai sinottici DCS ad alte prestazioni:
   fondo neutro scuro, colore usato solo per dati e stati.
   ============================================================ */

/* Caratteri IBM Plex (licenza SIL OFL 1.1), ospitati sul sito: nessuna richiesta a server esterni */
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 400; font-display: swap; src: url('../fonts/ibm-plex-sans-latin-400-normal.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 500; font-display: swap; src: url('../fonts/ibm-plex-sans-latin-500-normal.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 600; font-display: swap; src: url('../fonts/ibm-plex-sans-latin-600-normal.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Sans'; font-style: normal; font-weight: 700; font-display: swap; src: url('../fonts/ibm-plex-sans-latin-700-normal.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url('../fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 500; font-display: swap; src: url('../fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Sans Condensed'; font-style: normal; font-weight: 600; font-display: swap; src: url('../fonts/ibm-plex-sans-condensed-latin-600-normal.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Sans Condensed'; font-style: normal; font-weight: 700; font-display: swap; src: url('../fonts/ibm-plex-sans-condensed-latin-700-normal.woff2') format('woff2'); }

:root {
  /* Superfici */
  --bg:          #0b1016;
  --bg-deep:     #070b0f;
  --bg-card:     #111921;
  --bg-panel:    #141e27;
  --bg-input:    #0e151c;
  --border:      #26333f;
  --border-soft: #1b2630;

  /* Testo */
  --text:        #d6dee6;
  --text-muted:  #9aa8b6;
  --text-dim:    #7a8b9c;
  --white:       #f2f6f9;

  /* Stati di processo */
  --accent:      #3cc8dc;   /* misura / dato di processo */
  --accent-hi:   #7fdcea;
  --accent-glow: rgba(60,200,220,0.10);
  --accent-line: rgba(60,200,220,0.32);
  --ok:          #45c486;
  --warn:        #f0a83a;
  --alarm:       #f06060;

  /* Alias dei nomi storici, usati dagli stili delle singole pagine */
  --gold:        var(--accent);
  --gold-dim:    #2a9bab;
  --gold-glow:   var(--accent-glow);
  --gold-border: var(--accent-line);
  --green:       var(--ok);
  --green-glow:  rgba(69,196,134,0.10);
  --red:         var(--alarm);
  --amber:       var(--warn);

  --radius:      3px;
  --radius-lg:   6px;
  --radius-xl:   8px;
  --transition:  0.18s ease;
  --shadow:      0 10px 30px rgba(0,0,0,0.45);
  --shadow-gold: 0 0 0 1px var(--accent-line), 0 10px 30px rgba(0,0,0,0.45);
  --max-w:       1160px;

  --font-head:   'IBM Plex Sans Condensed', 'IBM Plex Sans', 'Arial Narrow', sans-serif;
  --font-body:   'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono:   'IBM Plex Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;

  /* Alias usati dal calcolatore "Efficienza casa" */
  --sans:        var(--font-body);
  --mono:        var(--font-mono);
  --oro:         var(--accent);
  --oro-border:  var(--accent-line);
  --oro-dim:     rgba(60,200,220,0.10);
  --oro-dim2:    rgba(60,200,220,0.06);
  --bg2:         var(--bg-card);
  --bg3:         var(--bg-panel);
  --bg4:         #1a2630;
  --border2:     #2c3a47;
  --green-border: rgba(69,196,134,0.28);
  --green-dim:   rgba(69,196,134,0.09);
  --amber-dim:   rgba(240,168,58,0.10);
  --text-dimmer: #74859a;
  --r:           var(--radius-lg);
  --r-sm:        var(--radius);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(60,200,220,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(60,200,220,0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: var(--bg-deep); }

.skip-link {
  position: absolute; left: 1rem; top: -3rem; z-index: 1000;
  background: var(--accent); color: var(--bg-deep); padding: 0.5rem 1rem;
  font-family: var(--font-mono); font-size: 0.85rem; border-radius: var(--radius);
}
.skip-link:focus { top: 1rem; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ── Tipografia ─────────────────────────────────────────── */
h1, h2, h3, h4 { font-family: var(--font-head); color: var(--white); line-height: 1.15; font-weight: 600; letter-spacing: -0.005em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: 1.22rem; }
h4 { font-size: 1.02rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hi); }
strong { color: var(--white); font-weight: 600; }
code, kbd { font-family: var(--font-mono); font-size: 0.9em; }

/* ── Layout ─────────────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 4.5rem 0; }
.section-sm { padding: 2.5rem 0; }
.divider { border: none; height: 1px; max-width: var(--max-w); margin: 0 auto; background: linear-gradient(90deg, transparent, var(--border) 15%, var(--border) 85%, transparent); }

/* ── Barra di stato superiore ───────────────────────────── */
.statusbar {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border-soft);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.statusbar .container { display: flex; align-items: center; gap: 1.25rem; min-height: 30px; flex-wrap: wrap; }
.statusbar .sb-item { display: inline-flex; align-items: center; gap: 0.45rem; white-space: nowrap; }
.statusbar .sb-item b { color: var(--text-muted); font-weight: 500; }
.statusbar .sb-right { margin-left: auto; }
.statusbar a { color: var(--text-muted); }
.statusbar a:hover { color: var(--accent); }
.led { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 8px var(--ok); display: inline-block; animation: led 2.4s ease-in-out infinite; }
.led.amber { background: var(--warn); box-shadow: 0 0 8px var(--warn); }
@keyframes led { 0%, 100% { opacity: 1; } 50% { opacity: 0.45; } }

/* ── Navbar ─────────────────────────────────────────────── */
#site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11,16,22,0.92);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; gap: 1.5rem; height: 64px; }
.nav-logo { display: flex; align-items: center; gap: 0.7rem; color: var(--white); flex-shrink: 0; }
.nav-logo:hover { color: var(--white); }
.nav-logo svg { width: 34px; height: 34px; flex-shrink: 0; }
.nav-logo .logo-txt { display: flex; flex-direction: column; line-height: 1.1; }
.nav-logo .logo-name { font-family: var(--font-head); font-size: 1.12rem; font-weight: 700; letter-spacing: 0.01em; }
.nav-logo .logo-sub { font-family: var(--font-mono); font-size: 0.62rem; color: var(--accent); letter-spacing: 0.14em; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 0.15rem; list-style: none; margin-left: auto; }
.nav-links a {
  display: block; padding: 0.45rem 0.7rem;
  font-family: var(--font-body); font-size: 0.86rem; font-weight: 500;
  color: var(--text-muted); border-radius: var(--radius);
  border-bottom: 2px solid transparent;
}
.nav-links a:hover { color: var(--white); background: var(--bg-card); }
.nav-links a.active { color: var(--white); border-bottom-color: var(--accent); border-radius: var(--radius) var(--radius) 0 0; }
.nav-cta {
  margin-left: 0.5rem;
  font-family: var(--font-mono) !important; font-size: 0.78rem !important;
  color: var(--bg-deep) !important; background: var(--accent);
  letter-spacing: 0.04em; text-transform: uppercase;
}
.nav-cta:hover { background: var(--accent-hi) !important; color: var(--bg-deep) !important; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--border); border-radius: var(--radius); cursor: pointer; padding: 0.55rem 0.5rem; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); margin: 4px 0; transition: transform var(--transition), opacity var(--transition); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ── Hero ───────────────────────────────────────────────── */
.hero { position: relative; padding: 4.5rem 0 3.5rem; overflow: hidden; }
.hero-eyebrow, .tag-label {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-mono); font-size: 0.74rem; font-weight: 500;
  color: var(--accent); letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 1.1rem;
}
.hero-eyebrow::before { content: ''; width: 22px; height: 1px; background: var(--accent); }
.hero h1 { margin-bottom: 1.25rem; max-width: 16ch; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-lead { font-size: 1.12rem; color: var(--text-muted); max-width: 58ch; margin-bottom: 2rem; }
.hero-actions { display: flex; gap: 0.9rem; flex-wrap: wrap; }
.hero-source { margin-top: 1.75rem; font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-dim); display: flex; gap: 0.5rem; flex-wrap: wrap; }
.hero-source a { color: var(--text-muted); border-bottom: 1px dotted var(--text-dim); }

.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 3rem; align-items: center; }

/* Sinottico animato in homepage */
.synoptic { background: var(--bg-deep); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1rem; position: relative; }
.synoptic .syn-head { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-dim); letter-spacing: 0.08em; text-transform: uppercase; padding: 0 0.25rem 0.75rem; border-bottom: 1px solid var(--border-soft); margin-bottom: 0.75rem; }
.synoptic svg { width: 100%; height: auto; display: block; }
.synoptic .flow { stroke-dasharray: 6 8; animation: flow 1.6s linear infinite; }
.synoptic .flow.slow { animation-duration: 2.6s; }
@keyframes flow { to { stroke-dashoffset: -28; } }
.synoptic .syn-foot { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; margin-top: 0.75rem; }
.synoptic .syn-foot div { background: var(--bg-card); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 0.45rem 0.6rem; }
.synoptic .syn-foot > div > span { display: block; font-family: var(--font-mono); font-size: 0.62rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; }
.synoptic .syn-foot b, .synoptic .syn-foot b span { font-family: var(--font-mono); font-size: 0.95rem; color: var(--accent); font-weight: 500; }

/* ── Pulsanti ───────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.7rem 1.35rem; border-radius: var(--radius);
  font-family: var(--font-mono); font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.05em; text-transform: uppercase;
  border: 1px solid transparent; cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  text-decoration: none; line-height: 1.3;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--bg-deep); }
.btn-primary:hover { background: var(--accent-hi); color: var(--bg-deep); }
.btn-outline { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { background: var(--bg-card); color: var(--text-muted); border-color: var(--border-soft); }
.btn-ghost:hover { color: var(--white); border-color: var(--border); }
.btn-block { width: 100%; }
.btn-lg { padding: 0.9rem 1.7rem; font-size: 0.86rem; }
.btn-sm { padding: 0.45rem 0.85rem; font-size: 0.74rem; }
button:disabled, .btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* ── Card generiche ─────────────────────────────────────── */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.6rem; transition: border-color var(--transition); }
.card:hover { border-color: #33434f; }
.card-icon { font-size: 1.5rem; line-height: 1; margin-bottom: 0.9rem; }

/* ── Griglia strumenti: "faceplate" da DCS ──────────────── */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(255px, 1fr)); gap: 1rem; }
.tool-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 1.35rem 1.35rem 1.2rem; color: var(--text);
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
  overflow: hidden;
}
.tool-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--border); transition: background var(--transition); }
.tool-card:hover { border-color: var(--accent-line); background: var(--bg-panel); transform: translateY(-2px); color: var(--text); }
.tool-card:hover::before { background: var(--accent); }
.tool-card .tag { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-dim); letter-spacing: 0.1em; margin-bottom: 0.9rem; display: flex; justify-content: space-between; align-items: center; }
.tool-card .card-icon { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-deep); font-size: 1.15rem; }
.tool-card h3 { font-size: 1.15rem; margin-bottom: 0.45rem; }
.tool-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; flex: 1; margin-bottom: 1rem; }
.tool-card .link-arrow { font-family: var(--font-mono); font-size: 0.74rem; color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; }
.tool-badge { position: absolute; top: 1.2rem; right: 1.2rem; font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.15rem 0.5rem; border-radius: 2px; border: 1px solid var(--border); color: var(--text-muted); background: var(--bg-deep); }
.tool-badge.new { border-color: rgba(69,196,134,0.45); color: var(--ok); }

/* ── Calcolatori ────────────────────────────────────────── */
.calc-wrapper { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.calc-header { padding: 1.15rem 1.6rem; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, var(--bg-panel), var(--bg-card)); display: flex; flex-direction: column; gap: 0.2rem; position: relative; }
.calc-header::after { content: ''; position: absolute; right: 1.6rem; top: 1.3rem; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.calc-header .tag { font-family: var(--font-mono); font-size: 0.68rem; color: var(--accent); letter-spacing: 0.12em; text-transform: uppercase; }
.calc-header h2 { font-size: 1.35rem; }
.calc-header p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }
.calc-body { padding: 1.6rem; }
.calc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.1rem 1.4rem; margin-bottom: 1.4rem; }
.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
.form-group label { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500; color: var(--text-muted); letter-spacing: 0.06em; text-transform: uppercase; }
.form-group .hint { font-size: 0.78rem; color: var(--text-dim); line-height: 1.45; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--white); font-family: var(--font-mono); font-size: 0.95rem; padding: 0.65rem 0.8rem;
  transition: border-color var(--transition), box-shadow var(--transition); appearance: none; -webkit-appearance: none;
}
.form-group select {
  background-image: linear-gradient(45deg, transparent 50%, var(--accent) 50%), linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 2.2rem;
}
.form-group input[type="checkbox"], .form-group input[type="radio"] { width: auto; appearance: auto; -webkit-appearance: auto; accent-color: var(--accent); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.form-group input::placeholder { color: var(--text-dim); }
.mini-input { background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius); color: var(--white); font-family: var(--font-mono); font-size: 0.82rem; padding: 0.3rem 0.45rem; }
.mini-input:focus { outline: none; border-color: var(--accent); }
.mono-val { font-family: var(--font-mono); font-size: 0.85rem; color: var(--accent); white-space: nowrap; }

/* ── Risultati: display numerici ────────────────────────── */
.result-box { display: none; margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px dashed var(--border); }
.result-box.visible { display: block; animation: fadeIn 0.35s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 0.75rem; margin-bottom: 1.1rem; }
.result-item { background: var(--bg-deep); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 0.9rem 1rem; position: relative; }
.result-item::before { content: ''; position: absolute; left: 0; top: 0.9rem; bottom: 0.9rem; width: 2px; background: var(--accent); }
.result-item .val { font-family: var(--font-mono); font-size: 1.45rem; font-weight: 500; color: var(--accent); line-height: 1.2; font-variant-numeric: tabular-nums; }
.result-item .lbl { font-size: 0.74rem; color: var(--text-dim); margin-top: 0.3rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.05em; }
.result-note { font-size: 0.9rem; color: var(--text-muted); padding: 0.85rem 1rem; border-radius: var(--radius); background: var(--bg-deep); border: 1px solid var(--border-soft); border-left: 3px solid var(--text-dim); margin-top: 0.75rem; line-height: 1.6; }
.result-note.warn, .result-note.result-warn { border-left-color: var(--warn); color: var(--text); }
.result-note.ok, .result-note.result-good { border-left-color: var(--ok); color: var(--text); }

/* ── Box informativi: allarmi ISA ───────────────────────── */
.info-box { display: flex; gap: 0.9rem; align-items: flex-start; padding: 1rem 1.2rem; border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg-card); border-left: 3px solid var(--accent); }
.info-box .icon { font-size: 1.05rem; line-height: 1.6; flex-shrink: 0; }
.info-box p { font-size: 0.92rem; color: var(--text-muted); margin: 0; }
.info-box.info { border-left-color: var(--accent); }
.info-box.warn { border-left-color: var(--warn); }
.info-box.ok { border-left-color: var(--ok); }

/* ── Etichette di sezione ───────────────────────────────── */
.section-label { display: inline-flex; align-items: center; gap: 0.6rem; font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 0.8rem; }
.section-label::before { content: '//'; color: var(--text-dim); }

/* ── Breadcrumb ─────────────────────────────────────────── */
.breadcrumb { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-dim); margin-bottom: 1.25rem; flex-wrap: wrap; letter-spacing: 0.03em; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--accent); }

/* ── Barre di avanzamento: bargraph ─────────────────────── */
.progress-row { margin-bottom: 0.9rem; }
.progress-label { display: flex; justify-content: space-between; font-size: 0.82rem; color: var(--text-muted); margin-bottom: 0.35rem; gap: 1rem; }
.progress-label .pval { font-family: var(--font-mono); color: var(--accent); }
.progress-track { height: 10px; background: var(--bg-deep); border: 1px solid var(--border-soft); border-radius: 2px; overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: repeating-linear-gradient(90deg, var(--accent) 0 6px, rgba(60,200,220,0.65) 6px 8px); transition: width 0.7s ease; }

/* ── Schede (tab) ───────────────────────────────────────── */
.tabs { display: flex; gap: 0.25rem; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; overflow-x: auto; scrollbar-width: thin; }
.tab-btn { background: none; border: none; border-bottom: 2px solid transparent; color: var(--text-muted); font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.05em; text-transform: uppercase; padding: 0.7rem 1rem; cursor: pointer; white-space: nowrap; margin-bottom: -1px; }
.tab-btn:hover { color: var(--white); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.3s ease; }

/* ── Tabelle di confronto ───────────────────────────────── */
.compare-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.compare-table th { text-align: left; padding: 0.7rem 0.9rem; font-family: var(--font-mono); font-size: 0.68rem; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); border-bottom: 1px solid var(--border); background: var(--bg-deep); }
.compare-table td { padding: 0.75rem 0.9rem; border-bottom: 1px solid var(--border-soft); vertical-align: top; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table td:first-child { color: var(--white); font-weight: 500; }
.compare-table td.hl { color: var(--accent); font-family: var(--font-mono); }
.compare-table td.ok { color: var(--ok); }
.compare-table td.warn { color: var(--warn); }
.table-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); }

/* ── Elenco a passi ─────────────────────────────────────── */
.steps-list { list-style: none; counter-reset: step; display: flex; flex-direction: column; gap: 1.1rem; }
.steps-list li { counter-increment: step; display: flex; gap: 1rem; align-items: flex-start; }
.steps-list li::before { content: counter(step, decimal-leading-zero); flex-shrink: 0; width: 2.4rem; height: 2.4rem; display: grid; place-items: center; font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent); border: 1px solid var(--accent-line); border-radius: var(--radius); background: var(--bg-deep); }
.steps-list li h4 { margin-bottom: 0.2rem; }
.steps-list li div p { font-size: 0.92rem; color: var(--text-muted); margin: 0; }

/* ── Testo lungo ────────────────────────────────────────── */
.prose { max-width: 72ch; }
.prose p { color: var(--text); margin-bottom: 1.1rem; }
.prose h2 { margin: 2.2rem 0 0.9rem; font-size: 1.6rem; }
.prose h3 { margin: 1.6rem 0 0.6rem; }
.prose ul, .prose ol { padding-left: 1.3rem; margin-bottom: 1.1rem; }
.prose li { margin-bottom: 0.45rem; }
.prose li::marker { color: var(--accent); }

/* ── Blocco schema monospazio ───────────────────────────── */
.schema-block { background: var(--bg-deep); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.25rem; font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.75; color: var(--text-muted); overflow-x: auto; }
.schema-block .hl { color: var(--accent); }
.schema-block .hl2 { color: var(--warn); }

/* ── Condivisione ───────────────────────────────────────── */
.share-bar { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; padding: 0.9rem 1.1rem; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--bg-card); }
.share-label { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-dim); margin-right: 0.25rem; }
.share-btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.45rem 0.85rem; border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg-deep); color: var(--text-muted); font-family: var(--font-mono); font-size: 0.74rem; cursor: pointer; transition: all var(--transition); }
.share-btn:hover { color: var(--white); border-color: var(--accent-line); }
.share-wa:hover { border-color: rgba(69,196,134,0.5); color: var(--ok); }
.share-copy.copied { border-color: var(--ok); color: var(--ok); }
.share-litti:hover { color: var(--accent); }

/* ── Riquadro autore / blog ─────────────────────────────── */
.madre-strip { display: flex; align-items: center; gap: 1.1rem; padding: 1.15rem 1.4rem; border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: var(--radius-lg); background: var(--bg-card); }
.madre-strip .ms-icon { font-size: 1.4rem; flex-shrink: 0; }
.madre-strip .ms-text { flex: 1; display: flex; flex-direction: column; }
.madre-strip .ms-text strong { font-family: var(--font-head); font-size: 1.05rem; }
.madre-strip .ms-text span { font-size: 0.86rem; color: var(--text-muted); }
.madre-strip .ms-cta { font-family: var(--font-mono); font-size: 0.76rem; letter-spacing: 0.05em; text-transform: uppercase; padding: 0.5rem 0.9rem; border: 1px solid var(--accent-line); border-radius: var(--radius); white-space: nowrap; }
.madre-strip .ms-cta:hover { background: var(--accent); color: var(--bg-deep); }

/* ── Contatto via email ─────────────────────────────────── */
.mail-panel { display: grid; grid-template-columns: 1.2fr 1fr; gap: 1.25rem; }
.mail-address { font-family: var(--font-mono); font-size: clamp(1.2rem, 3.4vw, 1.75rem); color: var(--white); word-break: break-all; }
.mail-topics { display: grid; gap: 0.6rem; }
.mail-topic { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.85rem 1rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-deep); color: var(--text); transition: border-color var(--transition), background var(--transition); }
.mail-topic:hover { border-color: var(--accent); background: var(--bg-panel); color: var(--white); }
.mail-topic span { font-size: 0.93rem; }
.mail-topic small { display: block; font-size: 0.78rem; color: var(--text-dim); }
.mail-topic::after { content: '→'; font-family: var(--font-mono); color: var(--accent); }

/* ── Donazione ──────────────────────────────────────────── */
.donate-section { border-top: 1px solid var(--border-soft); padding-top: 1.5rem; margin-top: 1.5rem; }
.donate-section h3 { font-family: var(--font-mono); font-size: 0.74rem; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 0.75rem; }
.donate-btn { display: inline-flex; align-items: center; gap: 0.9rem; padding: 0.8rem 1.1rem; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--bg-deep); color: var(--text); transition: border-color var(--transition), background var(--transition); max-width: 100%; }
.donate-btn:hover { border-color: var(--warn); background: var(--bg-panel); color: var(--text); }
.donate-icon { font-size: 1.3rem; }
.donate-text { display: flex; flex-direction: column; line-height: 1.35; }
.donate-text strong { font-size: 0.95rem; }
.donate-text span { font-size: 0.78rem; color: var(--text-dim); }
.donate-arrow { font-family: var(--font-mono); color: var(--warn); margin-left: 0.25rem; }

/* ── Footer ─────────────────────────────────────────────── */
#site-footer { margin-top: 3rem; background: var(--bg-deep); border-top: 1px solid var(--border); padding: 3.25rem 0 1.5rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 2.25rem; }
.footer-brand .logo-name { font-family: var(--font-head); font-size: 1.2rem; font-weight: 700; color: var(--white); display: block; margin-bottom: 0.5rem; }
.footer-brand p { font-size: 0.87rem; color: var(--text-muted); }
.footer-col h4 { font-family: var(--font-mono); font-size: 0.7rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 0.9rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.45rem; }
.footer-col ul a { font-size: 0.88rem; color: var(--text-muted); }
.footer-col ul a:hover { color: var(--accent); }
.footer-mail { font-family: var(--font-mono); font-size: 0.9rem; word-break: break-all; }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid var(--border-soft); font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-dim); }
.footer-bottom p { margin: 0; }
.footer-bottom a { color: var(--text-muted); }

/* ── Strisce dati in homepage ───────────────────────────── */
.metric-list { display: flex; flex-direction: column; gap: 0.75rem; }
.metric { display: grid; grid-template-columns: 9.5rem 1fr; gap: 1.1rem; align-items: center; padding: 1rem 1.15rem; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--bg-card); }
.metric .metric-val { font-family: var(--font-mono); font-size: 1.55rem; color: var(--accent); font-variant-numeric: tabular-nums; line-height: 1.15; }
.metric .metric-val small { display: block; font-size: 0.66rem; color: var(--text-dim); letter-spacing: 0.08em; text-transform: uppercase; }
.metric p { font-size: 0.86rem; color: var(--text-muted); margin: 0; }
.metric p a { color: var(--text-muted); border-bottom: 1px dotted var(--text-dim); }
.metric.alarm .metric-val { color: var(--warn); }

.split-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: start; }
.lead-muted { color: var(--text-muted); max-width: 60ch; margin-bottom: 2.25rem; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1060px) {
  .nav-links a { padding: 0.45rem 0.5rem; font-size: 0.82rem; }
}
@media (max-width: 960px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-grid { grid-template-columns: 1fr; gap: 2.25rem; }
  .split-2, .mail-panel { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg-deep); border-bottom: 1px solid var(--border); padding: 0.5rem 1rem 1rem; margin: 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.8rem 0.5rem; border-bottom: 1px solid var(--border-soft); border-radius: 0; font-size: 0.95rem; }
  .nav-links a.active { border-bottom-color: var(--accent); }
  .nav-cta { margin: 0.75rem 0 0; text-align: center; border-radius: var(--radius) !important; }
  .statusbar .sb-hide-m { display: none; }
}
@media (max-width: 768px) {
  body { font-size: 16px; }
  .calc-grid { grid-template-columns: 1fr; }
  .hero { padding: 3rem 0 2.5rem; }
  .section { padding: 3rem 0; }
  .madre-strip { flex-direction: column; align-items: flex-start; }
  .share-bar { justify-content: flex-start; }
  .metric { grid-template-columns: 1fr; gap: 0.35rem; }
}
@media (max-width: 560px) {
  .container { padding: 0 1rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: 1fr 1fr; }
  .hero-actions .btn { width: 100%; }
  .calc-body { padding: 1.15rem; }
  .calc-header { padding: 1rem 1.15rem; }
  .synoptic .syn-foot { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .result-grid { grid-template-columns: 1fr; }
}

/* Griglie dichiarate inline nelle pagine: collasso su schermi stretti */
@media (max-width: 860px) {
  .two-col-layout,
  [style*="grid-template-columns:2fr 1fr"], [style*="grid-template-columns: 2fr 1fr"],
  [style*="grid-template-columns:3fr 2fr"], [style*="grid-template-columns: 3fr 2fr"],
  [style*="grid-template-columns:1fr 1fr"], [style*="grid-template-columns: 1fr 1fr"],
  [style*="grid-template-columns:repeat(3"], [style*="grid-template-columns: repeat(3"] {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }
}
@media (max-width: 600px) {
  table { font-size: 0.84rem; }
  .compare-table th, .compare-table td { padding: 0.55rem 0.6rem; }
}

/* Stampa: risultati leggibili su carta */
@media print {
  body { background: #fff; color: #111; }
  .statusbar, #site-header, #site-footer, .share-bar, .donate-section, .madre-strip, .nav-toggle { display: none !important; }
  .calc-wrapper, .card, .result-item { border-color: #999; background: #fff; box-shadow: none; }
  .result-item .val, a { color: #000; }
}