/* LA MACCHINA — cianotipo. Blu di Prussia, linee tecniche bianche. */

@font-face {
  font-family: 'Saira Stencil';
  src: url('../vendor/fonts/saira-stencil-v2-latin-regular.woff2') format('woff2');
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('../vendor/fonts/ibm-plex-mono-v20-latin-regular.woff2') format('woff2');
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('../vendor/fonts/ibm-plex-mono-v20-latin-500.woff2') format('woff2');
  font-weight: 500; font-display: swap;
}
@font-face {
  font-family: 'Caveat';
  src: url('../vendor/fonts/caveat-v23-latin-regular.woff2') format('woff2');
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: 'Caveat';
  src: url('../vendor/fonts/caveat-v23-latin-700.woff2') format('woff2');
  font-weight: 700; font-display: swap;
}

:root {
  --blu: #123B70;          /* carta cianografica */
  --blu-scuro: #0C2B54;    /* fuori foglio, pannelli */
  --blu-notte: #081F3F;    /* topbar */
  --china: #EAF2FF;        /* linee tecniche */
  --china-dim: rgba(234, 242, 255, 0.55);
  --giallo: #FFD966;       /* accensione al tocco / scia */
  --giallo-carta: #FFE9A8;
  --rosso-timbro: #E4573D; /* RIPROVARE */
  --verde-timbro: #7FD1AE; /* COLLAUDATO */
  --linea: rgba(234, 242, 255, 0.28);
}

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

html, body { height: 100%; }
body {
  background: var(--blu-notte);
  color: var(--china);
  font-family: 'Plex Mono', monospace;
  font-size: 12px;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

#app {
  display: grid;
  grid-template: 'top top' 60px 'palette stage' 1fr / 196px 1fr;
  height: 100vh;
}

/* ---------- topbar ---------- */
#topbar {
  grid-area: top;
  display: flex; align-items: center; gap: 18px;
  padding: 0 16px;
  background: var(--blu-notte);
  border-bottom: 1px solid var(--linea);
  position: relative; z-index: 5;
}
#topbar::after { /* doppio filo tecnico */
  content: ''; position: absolute; left: 0; right: 0; bottom: 3px;
  border-bottom: 1px solid rgba(234, 242, 255, 0.12);
}
.brand h1 {
  font-family: 'Saira Stencil', 'Plex Mono', monospace;
  font-size: 26px; letter-spacing: 3px; line-height: 1; font-weight: 400;
}
.brand-sub { display: block; font-size: 8.5px; letter-spacing: 1.6px; color: var(--china-dim); margin-top: 2px; }

#patents { display: flex; gap: 6px; margin-left: 6px; }
.tab {
  font: 500 10.5px 'Plex Mono', monospace; letter-spacing: 1px;
  color: var(--china-dim); background: transparent;
  border: 1px solid var(--linea); border-radius: 2px;
  padding: 7px 10px; cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.tab:hover { color: var(--china); border-color: var(--china-dim); }
.tab.active { color: var(--blu-notte); background: var(--china); border-color: var(--china); }

.actions { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.sep { width: 1px; height: 22px; background: var(--linea); margin: 0 4px; }
.btn {
  font: 500 11px 'Plex Mono', monospace; letter-spacing: 1px;
  color: var(--china); background: transparent;
  border: 1px solid var(--china-dim); border-radius: 2px;
  padding: 8px 12px; cursor: pointer;
  transition: background 0.15s, color 0.15s, transform 0.08s;
}
.btn:hover { background: rgba(234, 242, 255, 0.1); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, .tab:focus-visible { outline: 2px dashed var(--giallo); outline-offset: 2px; }
.btn.ghost { border-color: var(--linea); color: var(--china-dim); padding: 8px 9px; }
.btn.ghost:hover { color: var(--china); }
.btn.primary {
  background: var(--giallo); color: #4A3705; border-color: var(--giallo);
  font-weight: 500; padding: 8px 16px;
}
.btn.primary:hover { background: var(--giallo-carta); }
.btn[disabled] { opacity: 0.35; pointer-events: none; }
select.btn { appearance: none; max-width: 110px; }
select.btn option { background: var(--blu-notte); color: var(--china); }

/* ---------- palette ---------- */
#palette {
  grid-area: palette;
  background: var(--blu-scuro);
  border-right: 1px solid var(--linea);
  display: flex; flex-direction: column;
  overflow-y: auto; z-index: 4;
}
.palette-head, .props-head {
  font-size: 9px; letter-spacing: 2px; color: var(--china-dim);
  padding: 12px 14px 8px;
}
#palette-list { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; padding: 0 10px; }
.piece-card {
  border: 1px solid var(--linea); border-radius: 2px;
  padding: 6px 4px 5px; text-align: center; cursor: grab;
  background: rgba(18, 59, 112, 0.45);
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  user-select: none; -webkit-user-select: none;
}
.piece-card:hover { border-color: var(--giallo); background: rgba(18, 59, 112, 0.9); transform: translateY(-1px); }
.piece-card:active { cursor: grabbing; }
.piece-card canvas { width: 100%; height: 44px; display: block; pointer-events: none; }
.piece-card .pc-label { font-size: 9px; letter-spacing: 1px; margin-top: 2px; }
.piece-card .pc-sub { font-size: 8px; color: var(--china-dim); }

#props-panel { border-top: 1px dashed var(--linea); margin-top: 12px; padding-bottom: 8px; }
#props-body { padding: 0 14px; display: flex; flex-direction: column; gap: 9px; }
.prop-row { display: flex; flex-direction: column; gap: 3px; }
.prop-row label { font-size: 9px; letter-spacing: 1px; color: var(--china-dim); display: flex; justify-content: space-between; }
.prop-row output { color: var(--giallo); }
input[type='range'] { accent-color: #FFD966; width: 100%; height: 18px; cursor: ew-resize; }
.opt-group { display: flex; gap: 4px; }
.opt-group button {
  flex: 1; font: 500 10px 'Plex Mono', monospace; padding: 5px 0;
  background: transparent; color: var(--china-dim);
  border: 1px solid var(--linea); border-radius: 2px; cursor: pointer;
}
.opt-group button.on { background: var(--china); color: var(--blu-notte); border-color: var(--china); }
.props-hint { padding: 10px 14px 0; font-size: 8.5px; color: var(--china-dim); line-height: 1.6; }
.btn-danger {
  margin: 2px 0 0; font: 500 10px 'Plex Mono', monospace; letter-spacing: 1px;
  background: transparent; color: var(--rosso-timbro);
  border: 1px dashed var(--rosso-timbro); border-radius: 2px; padding: 6px; cursor: pointer;
}
.btn-danger:hover { background: rgba(228, 87, 61, 0.15); }
.palette-foot {
  margin-top: auto; padding: 12px 14px; font-size: 8.5px; line-height: 1.7;
  color: var(--china-dim); border-top: 1px dashed var(--linea);
}

/* ---------- stage ---------- */
#stage { grid-area: stage; position: relative; overflow: hidden; background: var(--blu-scuro); }
#sheet {
  position: absolute; inset: 0; width: 100%; height: 100%;
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='28' viewBox='0 0 28 28'%3E%3Cpath d='M14 2v9M14 17v9M2 14h9M17 14h9' stroke='%23EAF2FF' stroke-width='1.4'/%3E%3Ccircle cx='14' cy='14' r='2.4' fill='none' stroke='%23FFD966' stroke-width='1.4'/%3E%3C/svg%3E") 14 14, crosshair;
}
#sheet.panning { cursor: grabbing; }
#sheet.dragging { cursor: grabbing; }

#hud { position: absolute; left: 14px; bottom: 12px; display: flex; gap: 8px; align-items: center; pointer-events: none; }
.chip {
  font-size: 9.5px; letter-spacing: 1.5px; padding: 6px 10px;
  border: 1px solid var(--linea); border-radius: 2px;
  background: rgba(8, 31, 63, 0.75); color: var(--china-dim);
  backdrop-filter: blur(2px);
}
#mode-chip.run { color: var(--giallo); border-color: var(--giallo); animation: blink 1.1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0.55; } }
#attempts b { color: var(--china); font-weight: 500; letter-spacing: 2px; }

/* ---------- timbro ---------- */
#stamp {
  position: absolute; left: 50%; top: 44%;
  transform: translate(-50%, -50%) rotate(-11deg);
  pointer-events: none; text-align: center; z-index: 8;
}
#stamp-inner {
  font-family: 'Saira Stencil', monospace;
  font-size: 44px; letter-spacing: 5px; line-height: 1;
  padding: 18px 34px 14px;
  border: 5px double currentColor; border-radius: 6px;
  mix-blend-mode: screen;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.55' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.72 0.28'/%3E%3C/filter%3E%3Crect width='240' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.55' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.72 0.28'/%3E%3C/filter%3E%3Crect width='240' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}
#stamp.win #stamp-inner { color: var(--verde-timbro); }
#stamp.fail #stamp-inner { color: var(--rosso-timbro); }
#stamp-note {
  margin-top: 14px; font-family: 'Caveat', cursive; font-size: 24px;
  color: var(--giallo-carta); transform: rotate(3deg);
}
#stamp.show { animation: stampIn 0.42s cubic-bezier(0.2, 2.4, 0.4, 1) both; }
@keyframes stampIn {
  0% { transform: translate(-50%, -50%) rotate(-11deg) scale(2.6); opacity: 0; }
  55% { opacity: 1; }
  100% { transform: translate(-50%, -50%) rotate(-11deg) scale(1); opacity: 1; }
}

/* ---------- angolo ---------- */
.foot-links { display: flex; gap: 12px; align-items: center; margin-top: 8px; }
.foot-links a { color: var(--china-dim); text-decoration: none; letter-spacing: 1px; font-size: 9.5px; }
.foot-links a:hover { color: var(--giallo); }
.foot-links .sig { font-family: 'Caveat', cursive; font-size: 14px; color: var(--china-dim); }

/* ---------- modal ---------- */
#modal[hidden], #stamp[hidden], #props-panel[hidden] { display: none; }
#modal {
  position: fixed; inset: 0; z-index: 20;
  background: rgba(8, 31, 63, 0.72); backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center;
}
#modal-box {
  background: var(--blu); border: 1px solid var(--china-dim);
  box-shadow: 0 0 0 6px rgba(234, 242, 255, 0.06);
  padding: 22px; width: 320px;
}
.modal-title { font-size: 10px; letter-spacing: 2px; color: var(--china-dim); margin-bottom: 12px; }
#modal-input {
  width: 100%; font: 400 14px 'Plex Mono', monospace;
  background: var(--blu-notte); color: var(--china);
  border: 1px solid var(--linea); padding: 9px 10px; border-radius: 2px;
}
#modal-input:focus { outline: 1px dashed var(--giallo); }
.modal-row { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }

@media (max-width: 1210px) {
  .brand-sub { display: none; }
  .brand h1 { font-size: 20px; letter-spacing: 2px; }
  #topbar { gap: 10px; padding: 0 10px; }
  .tab { padding: 6px 7px; font-size: 9.5px; letter-spacing: 0.5px; }
  .btn { padding: 6px 8px; font-size: 10px; }
  .btn.primary { padding: 6px 10px; }
  select.btn { max-width: 86px; }
}

@media (prefers-reduced-motion: reduce) {
  #mode-chip.run { animation: none; }
  #stamp.show { animation: none; }
  * { transition: none !important; }
}