/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 var(--gutter);
  background: #050918d9;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #77b3ff1c;
}

.logo { font-family: var(--font-display); font-size: 28px; font-weight: 700; white-space: nowrap; }
.logo span { color: var(--cyan); font-size: 18px; margin-left: 4px; }

.site-nav {
  display: flex;
  gap: 32px;
  height: 100%;
  margin: 0 auto;
  text-transform: uppercase;
}
.site-nav a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--muted);
  transition: color .2s;
}
.site-nav a:hover { color: var(--text); }
.site-nav b { font-weight: 500; color: var(--dim); }
.site-nav a[aria-current] { color: var(--pink); }
.site-nav a[aria-current] b { color: inherit; }
.site-nav a[aria-current]::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: var(--pink);
  box-shadow: 0 0 15px #ff2e9180;
}

.header-tools { display: flex; align-items: center; gap: 12px; }

.mode-switch { display: flex; height: 36px; border: 1px solid var(--line); }
.mode-switch button {
  display: flex;
  gap: 6px;
  align-items: center;
  border: 0;
  padding: 0 12px;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
}
.mode-switch button:hover { color: var(--text); }
.mode-switch button[aria-pressed='true'] { background: #12304d; color: var(--cyan); }
html:not(.js) .mode-switch { display: none; }

.github {
  display: flex;
  align-items: center;
  height: 36px;
  padding: 0 14px;
  border: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  transition: color .2s, border-color .2s;
}
.github:hover { color: var(--cyan); border-color: var(--line-strong); }

.read-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--pink));
  transform-origin: left;
  transform: scaleX(var(--progress, 0));
}
@media (max-width: 1100px) {
  .site-nav { gap: 20px; }
  .github { display: none; }
}

/* Navbar compatta per il nickname completo sui tablet. */
@media (min-width: 761px) and (max-width: 900px) {
  .site-header { gap: 16px; }
  .logo { font-size: 22px; }
  .site-nav { gap: 12px; }
  .site-nav a { font-size: 12px; }
}
@media (max-width: 760px) {
  .site-header {
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 0 12px;
    padding: 0 16px;
  }
  .logo { height: 52px; display: flex; align-items: center; font-size: clamp(18px, 5.5vw, 25px); }
  .header-tools { margin-left: auto; }
  .site-nav {
    order: 3;
    width: 100%;
    height: 44px;
    margin: 0;
    gap: 0;
    justify-content: space-between;
  }
  .site-nav a { font-size: 12px; letter-spacing: .5px; gap: 4px; }
  .mode-switch button { padding: 7px 6px; font-size: 11px; }
}

/* ---------- Layout delle sezioni (Lettura) ---------- */

main {
  position: relative;
  z-index: 1;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.page { padding: clamp(56px, 10vh, 112px) 0; }
.page[hidden] { display: none !important; }
.page + .page { border-top: 1px solid #77b3ff14; }

.section-heading { margin: 0 0 32px; }
.section-heading h2 { font-size: clamp(42px, 5vw, 66px); line-height: 1; letter-spacing: -2px; margin: 0; }
.section-heading > p:last-child { color: var(--muted); font-size: 16px; margin: 15px 0 0; }

/* ---------- Modalità Viaggio ---------- */

.journey body { height: 100dvh; overflow: hidden; }
.journey .read-progress, .journey .site-footer { display: none; }

/* Clip at the viewport edges without creating a horizontal scroll container.
   The pages retain the original centred 1600px layout at rest. */
.journey main {
  --page-inset: max(var(--gutter), calc((100vw - 1600px) / 2 + var(--gutter)));
  max-width: none;
  padding-inline: var(--page-inset);
  height: calc(100dvh - var(--header-h) - var(--strip-h) - var(--controls-h));
  overflow: clip;
}
/* Titolo in alto, contenuti scenici in basso, vicini alla postazione che li alimenta.
   Ogni pagina occupa la propria area del mondo; il contenuto lungo scorre in verticale. */
.journey .page {
  position: absolute;
  inset: 0 var(--page-inset);
  display: flex;
  flex-direction: column;
  overflow: auto;
  padding: 20px 4px 12px;
  border: 0;
  scrollbar-width: thin;
  /* Livello esterno solidale alla camera, separato dalle animazioni locali. */
  translate: var(--content-x, 0px) 0;
}
.journey .page > * { flex-shrink: 0; }
.journey .page[inert] { pointer-events: none; }
.journey .section-heading { margin: 0 0 14px; }
.journey .section-heading h2 { font-size: clamp(40px, 4.4vw, 60px); }
.journey .eyebrow { margin-bottom: 12px; }
.journey .section-heading > p:last-child { margin-top: 10px; }
@media (min-width: 761px) and (max-height: 820px) {
  .journey main { padding-top: 12px; }
  .journey .eyebrow { margin-bottom: 8px; }
  .journey .section-heading { margin-bottom: 14px; }
  .journey .section-heading h2 { font-size: clamp(36px, 3.6vw, 48px); }
  .journey .section-heading > p:last-child { display: none; }
  /* Prima si riducono decorazioni e spaziature, il testo resta leggibile. */
  .journey .page { padding-top: 14px; }
}
@media (max-width: 760px) {
  .section-heading h2 { font-size: 43px; }
  .section-heading > p:last-child { font-size: 15px; }
  /* Viaggio su mobile: tappe a carosello, solo l'etichetta del luogo attivo */
  .journey main { padding-top: 16px; }
}

/* Footer (solo Lettura): il viaggio finisce su un ponte */
.site-footer {
  position: relative;
  z-index: 1;
  font-size: 13px;
  color: var(--dim);
}
.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  max-width: 1600px;
  margin: 0 auto;
  padding: 20px var(--gutter) 32px;
}

.bridge { position: relative; height: 220px; margin-top: 40px; }
.bridge .railing { bottom: 172px; }
.bridge .walkway { position: absolute; left: 0; right: 0; bottom: 124px; }
.bridge::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 124px;
  background: url('../assets/bridge/bracket.webp') 0 0 / 220px auto space no-repeat;
}
.bridge .avatar { left: auto; right: 12%; bottom: 172px; transition: none; }
.bridge .street-props { bottom: 172px; }
/* Arredo urbano sullo stesso piano della passerella, dietro ai protagonisti. */
.street-props { position: absolute; inset: 0 0 calc(var(--road-h) - 4px); pointer-events: none; overflow-x: clip; }
.street-props img { position: absolute; bottom: 0; width: auto; }
.street-lamp { height: calc(var(--strip-h) - var(--road-h) + 12px); }
.lamp-left { left: 2%; }
.lamp-right { right: 2%; }
.street-bollard { height: calc(21 * var(--u) * 1px); opacity: .85; }
.stop-home { left: 13%; }
.stop-about { left: 33%; }
.stop-projects { left: 54%; }
.stop-contact { left: 85%; }
/* Passerella e ringhiera: moduli ripetuti in orizzontale */
.walkway {
  height: var(--road-h);
  background: url('../assets/bridge/walkway.webp') 0 100% / auto 100% repeat-x;
}
.railing {
  position: absolute;
  left: 0;
  right: 0;
  height: calc(var(--road-h) * .83);
  background: url('../assets/bridge/railing.webp') 0 100% / auto 100% repeat-x;
}
@media (max-width: 760px) {
  .footer-row { padding: 20px 16px 28px; }
  .bridge::after { background-size: 160px auto; }
  .street-bollard { height: 27px; }
  .lamp-left { left: -20px; }
  .lamp-right { right: -20px; }
}

/* ---------- Dialog ---------- */

/* Cornice in pixel art a 9 sezioni, come i pulsanti. */
dialog {
  max-width: 640px;
  width: calc(100% - 32px);
  max-height: calc(100dvh - 48px);
  padding: 36px;
  border: 12px solid transparent;
  border-width: 12px 14px;
  border-image: url('../assets/ui/frame-panel.webp') 24 27 24 27 / 12px 14px stretch;
  background: linear-gradient(135deg, #0a1936f2, #061027f2) padding-box;
  color: var(--text);
  filter: drop-shadow(0 15px 30px #0005);
}
dialog::backdrop { background: #020612c9; backdrop-filter: blur(8px); }
dialog h2 { font-size: 32px; margin: 10px 0 20px; }
dialog p { color: var(--body); }
#detail-content .stack { margin: 12px 0 4px; }
.close { position: absolute; right: 12px; top: 8px; border: 0; font-size: 30px; }
@media (max-width: 760px) {
  dialog { padding: 35px 22px; }
  dialog h2 { font-size: 26px; }
}

/* ---------- Comandi del Viaggio ---------- */

.journey-controls { display: none; }
.journey-controls {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 4;
  height: var(--controls-h);
  align-items: center;
  gap: 24px;
  padding: 0 var(--gutter);
  background: #050b1beb;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 1px;
}
.journey-controls button { height: 32px; min-width: 32px; border: 0; color: var(--body); transition: color .2s; }
.journey-controls button:not(:disabled):hover { color: var(--cyan); }
#prev, #next { font-size: 18px; }
.journey-controls button:disabled { opacity: .25; cursor: default; }
.progress { display: flex; gap: 14px; }
.progress a { width: 10px; height: 10px; border: 1px solid var(--dim); border-radius: 50%; }
.progress a.active { background: var(--pink); border-color: var(--pink); box-shadow: 0 0 15px #ff2e9170; }
#counter { color: var(--body); }
.hint { margin-left: auto; color: var(--dim); text-transform: uppercase; }
#motion { font-size: 11px; text-transform: uppercase; }
.journey .journey-controls { display: flex; }
@media (max-width: 760px) {
  /* Viaggio forzato su mobile: stessa scena, contenuti in colonna. */
  .journey-controls { gap: 16px; padding: 0 16px; }
  .hint { display: none; }
  #motion { margin-left: auto; }
  #motion span { display: none; }
  .progress { gap: 10px; }
}