:root {
  color-scheme: light dark;
  --bg: #f5f6fa; --surface: #ffffff; --surface2: #f0f2f7;
  --border: rgba(0,0,0,0.08); --border2: rgba(0,0,0,0.13);
  --text: #111827; --text2: #4b5563; --text3: #9ca3af;
  --accent: #3b82f6; --accent-bg: rgba(59,130,246,0.08); --accent-border: rgba(59,130,246,0.2);
  --green: #10b981; --green-bg: rgba(16,185,129,0.08);
  --red: #ef4444; --red-bg: rgba(239,68,68,0.07);
  --orange: #f59e0b; --orange-bg: rgba(245,158,11,0.08);
  --purple: #8b5cf6; --purple-bg: rgba(139,92,246,0.08);
  --shadow: 0 1px 3px rgba(0,0,0,0.07); --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0f14; --surface: #1a1e2a; --surface2: #222636;
    --border: rgba(255,255,255,0.07); --border2: rgba(255,255,255,0.12);
    --text: #eef0f6; --text2: #9aa3bc; --text3: #5c6480;
    --accent: #60a5fa; --accent-bg: rgba(96,165,250,0.1); --accent-border: rgba(96,165,250,0.2);
    --green: #34d399; --green-bg: rgba(52,211,153,0.08);
    --red: #f87171; --red-bg: rgba(248,113,113,0.08);
    --orange: #fbbf24; --orange-bg: rgba(251,191,36,0.08);
    --purple: #a78bfa; --purple-bg: rgba(167,139,250,0.08);
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
  }
}

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

body { 
  background: var(--bg); 
  color: var(--text); 
  font-family: 'Inter', system-ui, sans-serif; 
  font-size: 14px; 
  line-height: 1.65; 
  max-width: 800px; 
  margin: 0 auto; 
  padding: 48px 24px 80px; 
}

.header { text-align: center; margin-bottom: 36px; padding-bottom: 28px; border-bottom: 1px solid var(--border); }
.header-tag { font-size: 10px; letter-spacing: 4px; text-transform: uppercase; color: var(--text3); margin-bottom: 12px; }
.header h1 { font-size: clamp(34px, 7vw, 62px); font-weight: 700; letter-spacing: 2px; line-height: 1; color: var(--text); text-transform: uppercase; }
.header h1 span { color: var(--accent); }
.header-sub { margin-top: 10px; color: var(--text3); font-size: 12px; }

.disclaimer-box { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 18px 20px; margin-bottom: 28px; box-shadow: var(--shadow); }
.disclaimer-inner { display: flex; gap: 14px; align-items: flex-start; }
.disclaimer-title { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 5px; }
.disclaimer-text { font-size: 12px; color: var(--text2); line-height: 1.6; margin-bottom: 10px; }
.disclaimer-text strong { color: var(--text); }
.disclaimer-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.pill { background: var(--surface2); border: 1px solid var(--border); border-radius: 20px; padding: 4px 12px; font-size: 11px; font-weight: 500; color: var(--text2); }

.nav-tabs { display: flex; gap: 2px; background: var(--surface); border-bottom: 1px solid var(--border); padding: 8px 0 0; overflow-x: auto; position: sticky; top: 0; z-index: 200; backdrop-filter: blur(16px); margin: 0 -24px; padding: 8px 24px 0; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.nav-tab { font-size: 12px; font-weight: 500; color: var(--text3); padding: 8px 14px; cursor: pointer; border-radius: 9px 9px 0 0; white-space: nowrap; transition: all 0.18s; background: none; border: none; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.nav-tab:hover { color: var(--text); }
.nav-tab.active { color: var(--accent); font-weight: 600; border-bottom-color: var(--accent); }

.tab-section { display: none; }
.tab-section.active { display: block; animation: fadeIn 0.22s ease; padding-top: 16px; }

.quick-nav { display: flex; flex-wrap: wrap; gap: 6px; padding: 8px 14px; background: var(--surface2); border-bottom: 1px solid var(--border); position: sticky; top: 49px; z-index: 100; margin: 0 -24px 24px; padding-left: 24px; padding-right: 24px; }
.qn-btn { font-size: 11px; font-weight: 500; color: var(--accent); background: var(--accent-bg); border: 1px solid var(--accent-border); border-radius: 20px; padding: 5px 13px; cursor: pointer; transition: all 0.15s; white-space: nowrap; }
.qn-btn:hover { background: var(--accent); color: white; border-color: var(--accent); }

.section { margin-bottom: 36px; }
.section-header { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.step-num { font-size: 10px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); background: var(--accent-bg); border: 1px solid var(--accent-border); padding: 4px 10px; border-radius: 6px; white-space: nowrap; }
.section-title { font-size: 17px; font-weight: 600; color: var(--text); }

.script-box { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; margin-bottom: 12px; box-shadow: var(--shadow); }
.script-box-header { background: var(--surface2); border-bottom: 1px solid var(--border); padding: 10px 16px; display: flex; align-items: center; gap: 8px; }
.script-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.script-box-header span { font-size: 10px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--text3); }
.script-content { padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.script-line { display: flex; gap: 10px; align-items: flex-start; }

.script-badge { font-size: 9px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 3px 8px; border-radius: 5px; white-space: nowrap; flex-shrink: 0; margin-top: 2px; }
.script-badge.audio { color: var(--accent); background: var(--accent-bg); border: 1px solid var(--accent-border); }
.script-badge.scritto { color: var(--text2); background: var(--surface2); border: 1px solid var(--border); }
.script-badge.green { color: var(--green); background: var(--green-bg); border: 1px solid rgba(16,185,129,0.2); }
.script-badge.red { color: var(--red); background: var(--red-bg); border: 1px solid rgba(239,68,68,0.2); }
.script-badge.gold { color: var(--orange); background: var(--orange-bg); border: 1px solid rgba(245,158,11,0.2); }

.script-text { font-size: 13px; color: var(--text2); line-height: 1.75; }
.script-text strong { color: var(--text); font-weight: 600; }
.script-divider { height: 1px; background: var(--border); }

.voice-indicator { display: inline-flex; align-items: center; gap: 5px; margin-top: 7px; background: var(--accent-bg); border: 1px solid var(--accent-border); border-radius: 6px; padding: 3px 9px; width: fit-content; }
.voice-indicator span:first-child { font-size: 11px; }
.voice-indicator span:last-child { font-size: 9px; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; color: var(--accent); }

.copy-btn { margin-top: 9px; background: var(--accent-bg); border: 1px solid var(--accent-border); border-radius: 6px; color: var(--accent); font-size: 11px; font-weight: 600; padding: 5px 12px; cursor: pointer; display: inline-block; font-family: inherit; transition: all 0.15s; width: fit-content; }
.copy-btn:hover { background: var(--accent); color: white; }
.copy-disclaimer { font-size: 10px; color: var(--text3); margin-top: 4px; }

.case-box { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; margin-bottom: 10px; box-shadow: var(--shadow); }
.case-header { padding: 10px 14px; display: flex; align-items: center; gap: 10px; border-bottom: 1px solid var(--border); }
.case-header.blue { border-left: 3px solid var(--accent); }
.case-header.orange { border-left: 3px solid var(--orange); }
.case-header.red { border-left: 3px solid var(--red); }
.case-header.green { border-left: 3px solid var(--green); }
.case-header.purple { border-left: 3px solid var(--purple); }
.case-title { font-size: 13px; font-weight: 600; color: var(--text); }
.case-body { padding: 14px 16px; display: flex; flex-direction: column; gap: 10px; }

.tip { background: var(--green-bg); border: 1px solid rgba(16,185,129,0.2); border-radius: 10px; padding: 12px 14px; display: flex; gap: 10px; align-items: flex-start; margin-bottom: 12px; }
.tip p { font-size: 12px; color: var(--text2); line-height: 1.6; }
.tip strong { color: var(--green); }

.alert { background: var(--red-bg); border: 1px solid rgba(239,68,68,0.2); border-radius: 10px; padding: 12px 14px; display: flex; gap: 10px; align-items: flex-start; margin-bottom: 12px; }
.alert p { font-size: 12px; color: var(--text2); line-height: 1.6; }
.alert strong { color: var(--red); }
.alert-icon { font-size: 14px; flex-shrink: 0; margin-top: 1px; }

.ph { display: inline-block; background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.35); border-radius: 4px; color: var(--orange); font-size: 11px; font-weight: 600; padding: 1px 6px; margin: 0 1px; }
.divider { height: 1px; background: var(--border); margin: 28px 0; }

/* Refactoring griglia di edificazione */
.grid-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.edif-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px; }
.purple-left { border-left: 3px solid var(--purple); }
.red-left { border-left: 3px solid var(--red); }
.orange-left { border-left: 3px solid var(--orange); }
.green-left { border-left: 3px solid var(--green); }

.card-tag { font-size: 10px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 6px; }
.purple-txt { color: var(--purple); }
.red-txt { color: var(--red); }
.orange-txt { color: var(--orange); }
.green-txt { color: var(--green); }
.card-desc { font-size: 12px; color: var(--text2); }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@media (max-width: 560px) { 
  body { padding: 24px 14px 60px; } 
  .nav-tab { padding: 7px 10px; font-size: 11px; } 
  .grid-layout { grid-template-columns: 1fr; }
}