:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --ok: #3fb950;
  --warn: #d29922;
  --crit: #f85149;
  --accent: #58a6ff;
  /* Titoli sezioni nella risposta AI (testo **…**) e heading pannello */
  --ai-title: #6ecbff;
  --touch-min: 44px;
  --radius: 10px;
  /* Spazio riservato alla tab bar fissa (altezza pulsanti + safe area) */
  --bottom-tab-pad: calc(4rem + env(safe-area-inset-bottom, 0px));
}

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

html {
  -webkit-text-size-adjust: 100%;
}

.show-below-sm {
  display: none;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  line-height: 1.5;
  padding-left: env(safe-area-inset-left, 0);
  padding-right: env(safe-area-inset-right, 0);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

header {
  padding: max(0.75rem, env(safe-area-inset-top, 0.75rem)) 1rem 0.85rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

header h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.05rem, 4vw, 1.25rem);
  font-weight: 600;
}

.header-desc {
  margin: 0;
  font-size: clamp(0.8rem, 3.2vw, 0.9rem);
  color: var(--muted);
  max-width: 42rem;
}

.header-desc__hint {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.88em;
  color: var(--muted);
  font-weight: 400;
}

.header-desc__hint code {
  font-size: 0.92em;
  padding: 0.05em 0.28em;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
}

body.app-shell {
  min-height: 100vh;
  min-height: 100dvh;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

main.main-stack {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  max-width: 960px;
  margin: 0 auto;
  width: 100%;
  padding: 0.75rem max(0.75rem, env(safe-area-inset-left)) 0 max(0.75rem, env(safe-area-inset-right));
  overflow: hidden;
}

.toolbar {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.65rem;
  flex-shrink: 0;
}

.seg-links {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 0.35rem;
  width: 100%;
}

.seg-link {
  flex: 1;
  min-width: 0;
  min-height: var(--touch-min);
  margin: 0;
  padding: 0.45rem 0.35rem 0.35rem;
  font: inherit;
  font-size: clamp(0.78rem, 2.8vw, 0.92rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-align: center;
  color: var(--muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.12s ease, border-color 0.12s ease;
}

.seg-link:hover {
  color: var(--text);
}

.seg-link.active,
.seg-link[aria-pressed="true"] {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.seg-link.seg-link--scene {
  font-weight: 600;
}

.seg-link.seg-link--scene:not(.active):active {
  color: var(--accent);
}

@media (min-width: 540px) {
  .toolbar {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
  }

  .seg-links {
    flex: 1;
    min-width: 0;
    max-width: 28rem;
  }
}

.bottom-tab-nav {
  display: flex;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 200;
  flex-shrink: 0;
  padding: 0.35rem max(0.5rem, env(safe-area-inset-left)) max(0.35rem, env(safe-area-inset-bottom))
    max(0.5rem, env(safe-area-inset-right));
  border-top: 1px solid var(--border);
  background: var(--surface);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.35);
}

.bottom-tab-nav__btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.18rem;
  flex: 1;
  min-width: 0;
  min-height: calc(var(--touch-min) + 4px);
  margin: 0;
  padding: 0.28rem 0.25rem 0.32rem;
  font: inherit;
  color: var(--muted);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  border-radius: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.12s ease, border-color 0.12s ease;
}

.bottom-tab-nav__ico {
  display: block;
  flex-shrink: 0;
  opacity: 0.92;
}

.bottom-tab-nav__txt {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.05;
}

.bottom-tab-nav__btn:hover {
  color: rgba(230, 237, 243, 0.92);
}

.bottom-tab-nav__btn.active,
.bottom-tab-nav__btn[aria-selected="true"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.bottom-tab-nav__btn.active .bottom-tab-nav__ico,
.bottom-tab-nav__btn[aria-selected="true"] .bottom-tab-nav__ico {
  opacity: 1;
}

.btn-primary,
button.secondary {
  min-height: var(--touch-min);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  border: 2px solid var(--border);
  background: transparent;
  color: var(--text);
}

.btn-primary {
  border-color: var(--accent);
}

button.secondary:active,
.btn-primary:active {
  opacity: 0.88;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.panel-viewport {
  display: block;
  flex: 1 1 0%;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  touch-action: pan-y;
  padding-bottom: var(--bottom-tab-pad);
}

.panel {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem max(0.75rem, env(safe-area-inset-left)) 1.1rem max(0.75rem, env(safe-area-inset-right));
}

.panel.active {
  display: block;
}

.panel-lead {
  margin: 0 0 0.65rem;
  font-size: clamp(0.8rem, 3vw, 0.88rem);
  color: var(--muted);
}

.panel-lead strong {
  color: var(--text);
  font-weight: 600;
}

.thermo-hero {
  text-align: center;
  padding: 0.65rem 0 0.25rem;
  border-bottom: 1px dashed var(--border);
  margin-bottom: 0.35rem;
}

.thermo-hero[hidden] {
  display: none !important;
}

.thermo-hero .badge {
  margin-top: 0.35rem;
}

.ehs-hero {
  text-align: center;
  padding: 0.75rem 0 0.5rem;
}

.ehs-score,
.ehs-score--secondary {
  font-size: clamp(2.1rem, 9.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.ehs-score--secondary {
  color: var(--accent);
}

.ehs-label {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.hint-inline {
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
  color: var(--muted);
  font-size: 0.68em;
}

.unit-meta {
  margin: 0.65rem 0 0;
  font-size: clamp(0.82rem, 3vw, 0.9rem);
  color: var(--muted);
}

.grid-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
  margin-top: 0.85rem;
}

@media (min-width: 380px) {
  .grid-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 720px) {
  .grid-metrics {
    grid-template-columns: repeat(3, 1fr);
  }
}

.metric {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 0.65rem;
  min-height: 4.5rem;
}

.metric .v {
  font-size: clamp(1.05rem, 4vw, 1.2rem);
  font-weight: 600;
}

.metric .k {
  font-size: 0.68rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.3rem;
}

.metric .baseline-hint {
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 0.35rem;
  line-height: 1.35;
}

.row-icons {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  justify-content: center;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.grid-metrics > .row-icons--with-linea {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
  align-self: stretch;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: clamp(0.4rem, 2.5vw, 0.9rem);
  min-height: 4.5rem;
}

.grid-metrics > .row-icons--with-linea .phase-icon {
  min-width: 0;
  gap: 0.28rem;
}

@media (min-width: 720px) {
  .grid-metrics > .row-icons--with-linea {
    grid-column: 2 / -1;
    justify-content: center;
  }
}

.phase-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  min-width: var(--touch-min);
}

.dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
}

@media (min-width: 380px) {
  .dot {
    width: 18px;
    height: 18px;
  }
}

.dot.ok {
  background: var(--ok);
  box-shadow: 0 0 10px rgba(63, 185, 80, 0.45);
}

.dot.warn {
  background: var(--warn);
}

.dot.crit {
  background: var(--crit);
}

.subscores {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.45rem;
  margin-top: 0.85rem;
}

@media (min-width: 480px) {
  .subscores {
    grid-template-columns: repeat(2, 1fr);
  }
}

.sub {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  font-size: clamp(0.78rem, 3vw, 0.85rem);
  padding: 0.55rem 0.65rem;
  min-height: var(--touch-min);
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.badge {
  font-size: 0.62rem;
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  font-weight: 700;
  flex-shrink: 0;
}

.badge.ok {
  background: rgba(63, 185, 80, 0.2);
  color: var(--ok);
}

.badge.warn {
  background: rgba(210, 153, 34, 0.2);
  color: var(--warn);
}

.badge.crit {
  background: rgba(248, 81, 73, 0.2);
  color: var(--crit);
}

.relay-section {
  margin-top: 0.85rem;
  text-align: center;
}

.relay-section[hidden] {
  display: none !important;
}

.relay-line {
  margin: 0;
  font-size: clamp(0.82rem, 3vw, 0.9rem);
  color: var(--text);
}

.relay-caption {
  margin: 0.35rem 0 0;
  font-size: 0.75rem;
  color: var(--muted);
}

.chart-wrap {
  position: relative;
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg);
  height: min(72vh, 720px);
  min-height: 460px;
}

#chartCanvas {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.chart-legend {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.65rem;
}

.chart-legend--list {
  list-style: none;
  padding: 0;
  margin: 0.65rem 0 0;
}

.chart-legend--list li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.35rem;
}

.legend-swatch {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
}

.api-block {
  margin-top: 0.5rem;
}

.api-block label,
.field-label {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.api-block input {
  width: 100%;
  padding: 0.65rem 0.75rem;
  min-height: var(--touch-min);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: ui-monospace, monospace;
  font-size: 16px;
}

#panelAI.panel.active {
  /* Contenuto lungo (risposta AI): lo scroll è sul viewport, non in un riquadro annidato (evita troncamenti su mobile). */
  overflow: visible;
}

#panelAI > .btn-row {
  margin-top: 0;
}

#panelAI .field-label {
  font-size: 0.72rem;
}

textarea.prompt-out {
  width: 100%;
  min-height: 5.25rem;
  max-height: 9rem;
  margin-top: 0.35rem;
  padding: 0.4rem 0.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: ui-monospace, monospace;
  font-size: 10px;
  line-height: 1.32;
  resize: vertical;
  overflow-y: auto;
  overflow-wrap: anywhere;
}

.ai-heading {
  font-size: 0.78rem;
  font-weight: 600;
  margin: 0.65rem 0 0.28rem;
  color: var(--ai-title);
}

.ai-response {
  margin-top: 0.28rem;
  padding: 0.5rem 0.55rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  white-space: pre-wrap;
  font-size: 10.5px;
  line-height: 1.42;
  min-height: 6.5rem;
  max-height: none;
  overflow-y: visible;
  overflow-wrap: anywhere;
}

.ai-response .ai-out__title {
  color: var(--ai-title);
  font-weight: 700;
}

.status-line {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.45rem;
}

.mini-hint {
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 0.35rem;
}

.btn-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.65rem;
}

@media (min-width: 480px) {
  .btn-row {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }

  .btn-row .btn-primary,
  .btn-row button.secondary {
    flex: 1 1 auto;
    min-width: 10rem;
  }
}

/* ——— Smartphone: altezza finestra, scroll solo nel contenuto tab ——— */
@media (max-width: 639px) {
  :root {
    --touch-min: 40px;
    --radius: 8px;
  }

  .hide-below-sm {
    display: none !important;
  }

  .show-below-sm {
    display: inline !important;
  }

  body.app-shell {
    height: 100dvh;
    height: 100vh;
    min-height: 100dvh;
    padding-bottom: 0;
  }

  header {
    padding: 0.4rem 0.55rem;
    flex-shrink: 0;
  }

  header h1 {
    font-size: 0.92rem;
    margin: 0;
    line-height: 1.25;
  }

  .header-desc {
    display: none;
  }

  main.main-stack {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    padding: 0.35rem 0.45rem 0;
    overflow: hidden;
    max-width: none;
  }

  .toolbar {
    flex-shrink: 0;
    gap: 0.2rem;
    margin-bottom: 0.25rem;
  }

  .seg-links {
    gap: 0.2rem;
  }

  .seg-link {
    min-height: 40px;
    padding: 0.32rem 0.15rem 0.28rem;
    font-size: 0.68rem;
  }

  .bottom-tab-nav {
    padding: 0.28rem max(0.35rem, env(safe-area-inset-left)) max(0.28rem, env(safe-area-inset-bottom))
      max(0.35rem, env(safe-area-inset-right));
  }

  .bottom-tab-nav__btn {
    min-height: 48px;
    padding: 0.2rem 0.06rem 0.22rem;
    gap: 0.1rem;
  }

  .bottom-tab-nav__ico {
    width: 20px;
    height: 20px;
  }

  .bottom-tab-nav__txt {
    font-size: 0.56rem;
    letter-spacing: 0.04em;
  }

  .panel-viewport {
    padding-bottom: var(--bottom-tab-pad);
  }

  .panel {
    padding: 0.45rem 0.45rem 0.55rem;
    border-radius: 8px;
  }

  .thermo-hero {
    padding: 0.2rem 0;
    margin-bottom: 0.2rem;
  }

  .ehs-hero {
    padding: 0.3rem 0 0.2rem;
  }

  .ehs-score,
  .ehs-score--secondary {
    font-size: 1.85rem;
  }

  .ehs-label {
    font-size: 0.65rem;
  }

  .unit-meta {
    font-size: 0.68rem;
    margin-top: 0.2rem;
  }

  .grid-metrics {
    margin-top: 0.4rem;
    gap: 0.28rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metric {
    min-height: 0;
    padding: 0.38rem 0.4rem;
  }

  .metric .v {
    font-size: 0.88rem;
  }

  .metric .k {
    font-size: 0.58rem;
    margin-bottom: 0.15rem;
  }

  .metric .baseline-hint {
    font-size: 0.58rem;
    margin-top: 0.15rem;
    line-height: 1.2;
  }

  .subscores {
    margin-top: 0.4rem;
    gap: 0.22rem;
  }

  .sub {
    min-height: 0;
    padding: 0.32rem 0.38rem;
    font-size: 0.68rem;
  }

  .grid-metrics > .row-icons--with-linea {
    gap: 0.38rem;
    min-height: 0;
    padding: 0.1rem 0;
  }

  .grid-metrics > .row-icons--with-linea .dot {
    width: 14px;
    height: 14px;
  }

  .row-icons {
    margin-top: 0.4rem;
    padding-top: 0.4rem;
    gap: 0.65rem;
  }

  .phase-icon {
    font-size: 0.72rem;
    min-width: 0;
  }

  .relay-section {
    margin-top: 0.4rem;
  }

  .relay-caption {
    font-size: 0.65rem;
  }

  .panel-lead {
    font-size: 0.65rem;
    margin-bottom: 0.3rem;
    line-height: 1.3;
  }

  .chart-wrap {
    height: min(58vh, 520px);
    min-height: 380px;
    max-height: none;
  }

  .chart-legend--list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 0.6rem;
    font-size: 0.58rem;
    margin-top: 0.3rem;
  }

  .chart-legend--list li {
    margin-bottom: 0;
  }

  .api-block input {
    min-height: 40px;
    padding: 0.45rem 0.5rem;
  }

  textarea.prompt-out {
    min-height: 4.5rem;
    max-height: 7rem;
    margin-top: 0.25rem;
    padding: 0.32rem 0.4rem;
    font-size: 9.5px;
    line-height: 1.3;
    overflow-wrap: anywhere;
  }

  .ai-heading {
    margin: 0.45rem 0 0.2rem;
    font-size: 0.7rem;
  }

  .ai-response {
    min-height: 7.5rem;
    max-height: none;
    overflow-y: visible;
    font-size: 9.5px;
    line-height: 1.38;
    padding: 0.38rem 0.42rem;
    overflow-wrap: anywhere;
  }

  .btn-row .btn-primary,
  .btn-row button.secondary {
    min-height: 40px;
    font-size: 0.78rem;
  }
}