/* ==========================================================================
   Robot 3D — design system allineato a giacomel.info
   Token canonici: website/public/site-privacy/design-tokens.css
   Tipografia: IBM Plex Serif (prosa e titoli) + IBM Plex Mono (struttura)
                + Giacomel Inter (UI e controlli)
   ========================================================================== */

/* ---- Giacomel Inter (UI) ---- */
@font-face {
  font-family: 'Giacomel Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('./assets/fonts/inter-latin.woff2') format('woff2');
}

/* ---- IBM Plex Serif (prosa, titoli) ---- */
@font-face {
  font-family: 'IBM Plex Serif';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('./assets/fonts/IBMPlexSerif-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Serif';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('./assets/fonts/IBMPlexSerif-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Serif';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('./assets/fonts/IBMPlexSerif-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---- IBM Plex Mono (struttura, navigazione, etichette) ---- */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('./assets/fonts/IBMPlexMono-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('./assets/fonts/IBMPlexMono-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('./assets/fonts/IBMPlexMono-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  /* Colori canonici del sito (design-tokens.css) */
  --site-background: 0 0% 100%;
  --site-foreground: 222.2 84% 4.9%;
  --site-primary: 221.2 83.2% 53.3%;
  --site-primary-foreground: 210 40% 98%;
  --site-secondary: 210 40% 96.1%;
  --site-secondary-foreground: 222.2 47.4% 11.2%;
  --site-muted: 210 40% 96.1%;
  --site-muted-foreground: 215.4 16.3% 46.9%;
  --site-border: 214.3 31.8% 91.4%;
  --site-ring: 221.2 83.2% 53.3%;

  /* Scelte derivate (site.css del sito) */
  --site-bg: hsl(var(--site-background));
  --site-fg: hsl(var(--site-foreground));
  --site-muted-fg: hsl(var(--site-muted-foreground));
  --site-line: hsl(var(--site-border));
  --site-soft: hsl(var(--site-secondary));
  --site-accent: hsl(var(--site-primary));
  --site-accent-fg: hsl(var(--site-primary-foreground));

  /* Token tipografici canonici */
  --site-radius: 8px;
  --site-width: 87.5rem;
  --site-gutter: 1.5rem;
  --site-text-sm: 0.875rem;
  --site-text-base: 1rem;
  --site-text-lg: 1.125rem;
  --site-text-title: clamp(2rem, 4vw, 3rem);
  --site-leading-base: 1.5;
  --site-leading-copy: 1.625;
  --site-leading-title: 1.1;

  --font-serif: 'IBM Plex Serif', Georgia, 'Times New Roman', serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Consolas, monospace;
  --font-sans: 'Giacomel Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

[data-theme='dark'] {
  --site-background: 222.2 84% 4.9%;
  --site-foreground: 210 40% 98%;
  --site-primary: 217.2 91.2% 59.8%;
  --site-primary-foreground: 222.2 47.4% 11.2%;
  --site-secondary: 217.2 32.6% 17.5%;
  --site-secondary-foreground: 210 40% 98%;
  --site-muted: 217.2 32.6% 17.5%;
  --site-muted-foreground: 215 20.2% 65.1%;
  --site-border: 217.2 32.6% 17.5%;
  --site-ring: 224.3 76.3% 48%;
}

* {
  box-sizing: border-box;
  border-color: var(--site-line);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(72px + 16px);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--site-bg);
  color: var(--site-fg);
  font-family: var(--font-serif);
  font-size: var(--site-text-base);
  line-height: var(--leading-base);
  font-feature-settings: 'rlig' 1, 'calt' 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Prosa editoriale: IBM Plex Serif */
h1,
h2,
h3,
h4,
h5,
h6,
p,
article,
blockquote,
figcaption,
li,
dd {
  font-family: var(--font-serif);
}

/* Struttura, navigazione, etichette: IBM Plex Mono */
.site-header [data-portfolio-nav] a,
.site-languages button,
.site-footer a,
.site-footer button,
.site-actions button,
.hud-head b,
.hud-grid button,
.hud-field,
.hud-stat,
.hero-stats b,
.hero-stats span,
.site-eyebrow,
.step,
.tag-list li,
.card dt,
.code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
}

code,
kbd,
samp,
pre {
  font-size: 0.875em;
}

code {
  background: var(--site-soft);
  padding: 1px 5px;
  border-radius: 4px;
}

:focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background: var(--site-accent);
  color: var(--site-accent-fg);
  border-radius: var(--site-radius);
  font-family: var(--font-sans);
  z-index: 200;
}
.skip-link:focus {
  left: 12px;
  top: 12px;
}

/* ------------------------------------------------------------------ *
   Header / footer
 * ------------------------------------------------------------------ */
.site-header,
.site-footer {
  background: var(--site-bg);
  color: var(--site-fg);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 105;
  border-bottom: 1px solid var(--site-line);
}

.site-footer {
  border-top: 1px solid var(--site-line);
  margin-top: 64px;
}

.site-shell-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--site-width);
  min-height: 72px;
  margin: 0 auto;
  padding: 8px var(--site-gutter);
}

.site-header a,
.site-footer a,
.site-footer button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: var(--site-radius);
  background: transparent;
  color: inherit;
  font-family: var(--font-sans);
  font-size: var(--site-text-sm);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
}

.site-header a:hover,
.site-footer a:hover {
  color: var(--site-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-header .site-home,
.site-footer [data-site-home] {
  padding-left: 0;
  font-weight: 650;
  white-space: nowrap;
  gap: 10px;
}

/* Favicon del portfolio nel link alla home, come nel sito */
.site-header [data-site-home] img,
.site-footer [data-site-home] img {
  display: block;
  width: 32px;
  height: 32px;
  max-width: none;
  border-radius: 8px;
  object-fit: contain;
}

.site-header [data-portfolio-nav] {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  flex: 1;
}

.site-header [data-portfolio-nav] a {
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--site-muted-fg);
}

.site-header [data-portfolio-nav] a:hover {
  color: var(--site-primary);
  text-decoration: none;
}

.site-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.site-languages {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  border: 1px solid var(--site-line);
  padding: 2px;
  border-radius: 10px;
}

.site-languages button {
  min-width: 44px;
  padding: 4px 8px;
  color: var(--site-muted-fg);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.site-languages button[aria-pressed='true'] {
  background: var(--site-soft);
  color: var(--site-fg);
}

.site-icon-button {
  min-width: 44px;
  padding: 8px 10px;
  font-size: 1rem;
}

/* ------------------------------------------------------------------ *
   Hero
 * ------------------------------------------------------------------ */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 40px;
  align-items: center;
  max-width: var(--site-width);
  margin: 0 auto;
  padding: 56px var(--site-gutter) 32px;
}

/* Eyebrow: badge pillola mono, come nel sito */
.site-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 24px;
  padding: 8px 20px;
  border: 1px solid var(--site-line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--site-soft) 80%, transparent);
  color: var(--site-primary);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  line-height: 1.6;
}

.hero h1 {
  margin: 0 0 24px;
  max-width: 18ch;
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5.4vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 0.95;
}

.section-head h2 {
  margin: 0 0 20px;
  font-family: var(--font-serif);
  font-size: var(--site-text-title);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: var(--leading-title);
}

.lead {
  margin: 0 0 32px;
  max-width: 42rem;
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.4vw, 1.375rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  opacity: 0.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

/* CTA primario: mono, maiuscolo, tracking largo, pillola */
.site-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 14px 32px;
  border: 1px solid var(--site-primary);
  border-radius: 999px;
  background: var(--site-primary);
  color: var(--site-primary-foreground);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-decoration: none;
  box-shadow: 0 12px 28px hsl(var(--site-primary) / 0.25);
}

.site-button:hover {
  filter: brightness(0.95);
}

.site-button-ghost {
  background: transparent;
  color: var(--site-fg);
  border-color: var(--site-line);
  box-shadow: none;
}

.site-button-ghost:hover {
  color: var(--site-accent);
  border-color: var(--site-accent);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--site-line);
  list-style: none;
}

.hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-stats b {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
}

.hero-stats span {
  color: var(--site-muted-fg);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ------------------------------------------------------------------ *
   Stage 3D + HUD
 * ------------------------------------------------------------------ */
.stage {
  position: relative;
  border: 1px solid var(--site-line);
  border-radius: 14px;
  overflow: hidden;
  background: linear-gradient(180deg, #f3efe6, #e7e0d2);
}

[data-theme='dark'] .stage {
  background: linear-gradient(180deg, #14161c, #0d0f14);
}

#scene {
  display: block;
  width: 100%;
  height: min(72vh, 720px);
  touch-action: none;
}

.hud {
  position: absolute;
  left: 14px;
  top: 14px;
  width: min(300px, calc(100% - 28px));
  padding: 14px;
  background: color-mix(in srgb, var(--site-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border: 1px solid var(--site-line);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgb(15 23 42 / 12%);
}

.hud-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.hud-head b {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--site-muted-fg);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--site-fg);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--site-accent);
  flex: 0 0 auto;
}

.hud-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

/* Pannello secondario: disclosure nativo, chiuso per default */
.hud-more {
  margin-top: 8px;
}

.hud-more > summary {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 6px 8px;
  border: 1px solid var(--site-line);
  border-radius: var(--site-radius);
  background: transparent;
  color: var(--site-muted-fg);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  list-style: none;
}

.hud-more > summary::-webkit-details-marker {
  display: none;
}

.hud-more > summary::before {
  content: '+';
  margin-right: 8px;
  font-weight: 700;
}

.hud-more[open] > summary::before {
  content: '−';
}

.hud-more > summary:hover {
  color: var(--site-accent);
  border-color: var(--site-accent);
}

.hud-more[open] > summary {
  margin-bottom: 6px;
  color: var(--site-accent);
  border-color: var(--site-accent);
}

.hud-more .hud-grid {
  margin-top: 6px;
}

.hud-grid button,
.dpad button {
  min-height: 38px;
  padding: 6px 8px;
  border: 1px solid var(--site-line);
  border-radius: var(--site-radius);
  background: var(--site-soft);
  color: var(--site-fg);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.hud-grid button:hover {
  border-color: var(--site-accent);
  color: var(--site-accent);
}

.hud-grid button.is-on {
  background: var(--site-primary);
  border-color: var(--site-primary);
  color: var(--site-primary-foreground);
}

.hud-field {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--site-muted-fg);
}

.hud-field select {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 38px;
  padding: 6px 8px;
  border: 1px solid var(--site-line);
  border-radius: var(--site-radius);
  background: var(--site-bg);
  color: var(--site-fg);
  font-family: var(--font-sans);
  font-size: 1rem;
}

.hud-hint {
  margin: 10px 0 0;
  color: var(--site-muted-fg);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.hud-stat {
  margin: 6px 0 0;
  color: var(--site-muted-fg);
  font-size: 10px;
  letter-spacing: 0.06em;
}

.dpad {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: none;
  grid-template-columns: repeat(3, 46px);
  grid-template-rows: repeat(3, 46px);
  gap: 6px;
}

.dpad button {
  border-radius: 12px;
  background: color-mix(in srgb, var(--site-bg) 88%, transparent);
  font-family: var(--font-sans);
  font-size: 1rem;
}

.dpad button.is-active {
  background: var(--site-primary);
  color: var(--site-primary-foreground);
}

.dpad .up {
  grid-area: 1 / 2;
}
.dpad .left {
  grid-area: 2 / 1;
}
.dpad .right {
  grid-area: 2 / 3;
}
.dpad .down {
  grid-area: 3 / 2;
}
.dpad .run {
  grid-area: 2 / 2;
  font-size: 0.7rem;
}

@media (pointer: coarse) {
  .dpad {
    display: grid;
  }
  .hud {
    display: none;
  }
}

/* ------------------------------------------------------------------ *
   Storia
 * ------------------------------------------------------------------ */
.story,
.commands {
  max-width: var(--site-width);
  margin: 0 auto;
  padding: 72px var(--site-gutter);
}

.section-head {
  max-width: 46rem;
  margin-bottom: 48px;
}

.section-head .site-eyebrow {
  margin-bottom: 20px;
}

.timeline {
  display: grid;
  gap: 56px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline-item {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 40px;
  align-items: center;
  padding-top: 48px;
  border-top: 1px solid var(--site-line);
}

.timeline-item:nth-child(even) figure {
  order: 2;
}

.timeline figure {
  margin: 0;
}

.timeline img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--site-line);
  border-radius: 12px;
  background: var(--site-soft);
}

.timeline figcaption {
  margin-top: 12px;
  color: var(--site-muted-fg);
  font-size: var(--site-text-sm);
  line-height: var(--leading-base);
}

.step {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--site-accent);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
}

.timeline h3 {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.timeline p {
  margin: 0 0 18px;
  color: var(--site-muted-fg);
  font-size: var(--site-text-base);
  line-height: var(--leading-copy);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 8px 16px;
  border: 1px solid var(--site-line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--site-soft) 40%, transparent);
  color: var(--site-muted-fg);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ------------------------------------------------------------------ *
   Comandi
 * ------------------------------------------------------------------ */
.commands-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card {
  padding: 24px;
  border: 1px solid var(--site-line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--site-soft) 40%, transparent);
}

.card h3 {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.card dl {
  display: grid;
  gap: 12px;
  margin: 0;
}

.card dl > div {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}

.card dt {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--site-fg);
}

.card dd {
  margin: 0;
  color: var(--site-muted-fg);
  font-size: var(--site-text-sm);
  line-height: 1.5;
}

/* ------------------------------------------------------------------ *
   Boot overlay
 * ------------------------------------------------------------------ */
.boot {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--site-bg);
  color: var(--site-muted-fg);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: opacity 0.4s ease;
  z-index: 150;
}

.boot.hidden {
  opacity: 0;
  pointer-events: none;
}

/* ------------------------------------------------------------------ *
   Responsive
 * ------------------------------------------------------------------ */
@media (max-width: 1080px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 40px;
  }
  .commands-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .timeline-item {
    grid-template-columns: minmax(0, 1fr);
  }
  .timeline-item:nth-child(even) figure {
    order: 0;
  }
}

@media (max-width: 860px) {
  .site-header [data-portfolio-nav] {
    display: none;
  }
  #scene {
    height: min(58vh, 520px);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation: none !important;
    transition: none !important;
  }
}