/* ============================================================
   lab.css — portale didattico /lab/
   Usa le fondamenta di base.css (token, header, footer, ecc.).
   ============================================================ */

/* ---------- Header del Lab ---------- */
.brand-lab {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  padding: 0.15rem 0.45rem;
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
  border-radius: 6px;
  margin-left: 0.3rem;
}

/* ---------- Hero del Lab ---------- */
.lab-hero {
  position: relative;
  z-index: 2;
  padding-top: clamp(3rem, 8vw, 6rem);
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}
.lab-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}
.lab-kicker .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
}
.lab-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.4rem, 8vw, 5.2rem);
  line-height: 1.0;
  letter-spacing: -0.03em;
  max-width: 16ch;
}
.lab-title em { font-style: italic; font-weight: 400; color: var(--accent); }
.lab-intro {
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  padding-top: clamp(1.5rem, 3vw, 2rem);
  border-top: 1px solid var(--line);
  max-width: 60ch;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 0.9rem + 0.5vw, 1.18rem);
}
.lab-intro strong { color: var(--ink); font-weight: 600; }

/* ---------- Griglia strumenti ---------- */
/* Categorie di laboratori */
.lab-cat + .lab-cat { margin-top: clamp(2.5rem, 6vw, 4.25rem); }
.lab-cat-head {
  display: flex; align-items: baseline; gap: 0.9rem; flex-wrap: wrap;
  margin-bottom: 1.4rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--line);
}
.lab-cat-num { font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent); letter-spacing: 0.06em; }
.lab-cat-title {
  font-family: var(--font-display); font-weight: 500;
  font-size: clamp(1.4rem, 3.5vw, 2.05rem); letter-spacing: -0.02em; line-height: 1.1;
}
.lab-cat-desc { font-size: 0.9rem; color: var(--ink-soft); margin-left: auto; }
@media (max-width: 620px) { .lab-cat-desc { margin-left: 0; flex-basis: 100%; } }

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 330px), 1fr));
  gap: 1.25rem;
}
.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.85rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.35s var(--ease), transform 0.35s var(--ease),
              box-shadow 0.35s var(--ease);
}
.tool-card::after {
  content: "";
  position: absolute;
  top: -40%; right: -30%;
  width: 60%; height: 80%;
  background: radial-gradient(circle, var(--accent-wash), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.tool-card:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  transform: translateY(-4px);
  box-shadow: 0 18px 40px -28px rgba(0,0,0,0.5);
}
.tool-card:hover::after { opacity: 1; }

.tool-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.tool-num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-faint);
}
.tool-icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--accent);
  background: var(--bg);
}
.tool-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.5rem;
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.tool-desc { color: var(--ink-soft); font-size: 0.96rem; flex: 1; }

.tool-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
}
.tool-levels {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}
.tool-status {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.28rem 0.6rem;
  border-radius: 100px;
}
.tool-status.soon { color: var(--ink-soft); border: 1px solid var(--line); }
.tool-status.live { color: var(--accent-ink); background: var(--accent); }

/* tutta la card è cliccabile */
.tool-link { display: contents; }
.tool-card .tool-arrow {
  position: absolute;
  top: 1.85rem; right: 1.85rem;
  color: var(--ink-faint);
  transition: transform 0.3s var(--ease), color 0.3s var(--ease);
}
.tool-card:hover .tool-arrow { transform: translate(3px, -3px); color: var(--accent); }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--ink-soft); transition: color 0.2s var(--ease); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--line); }
.breadcrumb .current { color: var(--ink); }

/* ---------- Pagina strumento (stub) ---------- */
.tool-hero { padding-top: clamp(2.5rem, 6vw, 4rem); }
.tool-hero h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
}
.tool-hero .lead { max-width: 56ch; color: var(--ink-soft); font-size: 1.05rem; }
.tool-hero-meta {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  margin-top: 1.5rem;
}

.wip {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding: clamp(2rem, 5vw, 3.5rem);
  border: 1px dashed var(--line);
  border-radius: calc(var(--radius) + 6px);
  background: var(--bg-elev);
  text-align: center;
}
.wip-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.wip h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}
.wip p { max-width: 48ch; margin: 0 auto 1.75rem; color: var(--ink-soft); }
.wip-actions { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

/* ---------- Responsive ---------- */
@media (max-width: 620px) {
  .tool-card .tool-arrow { top: 1.85rem; right: 1.5rem; }
}

/* ============================================================
   Primitive UI condivise tra gli strumenti del Lab
   (pannelli, controlli segmentati, campi di input)
   ============================================================ */

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 3vw, 2rem);
  min-width: 0; /* permette alla griglia di restringersi su mobile */
}
.panel-head { margin-bottom: 1.4rem; }
.panel-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.panel-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.3rem, 2.6vw, 1.7rem);
  letter-spacing: -0.015em;
  line-height: 1.1;
}
.panel-sub { margin-top: 0.5rem; color: var(--ink-soft); font-size: 0.96rem; max-width: 60ch; }

/* Barra controlli */
.controls-panel {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem 2.5rem;
}
.control-group { display: flex; align-items: center; gap: 0.85rem; }
.control-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}
.control-meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-faint);
}
.control-meta strong { color: var(--ink); font-weight: 600; }

/* Segmented control */
.seg {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: var(--bg);
}
.seg-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.4rem 0.85rem;
  border: 0;
  border-radius: 100px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
  white-space: nowrap;
}
.seg-btn:hover { color: var(--ink); }
.seg-btn.active { background: var(--accent); color: var(--accent-ink); }

/* Bottone "fantasma" generico */
.ghost-btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: var(--bg);
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.15s var(--ease);
}
.ghost-btn:hover { border-color: var(--accent); color: var(--accent); }
.ghost-btn:active { transform: translateY(1px); }

/* Tag della base */
.base-tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--ink-faint);
  font-weight: 400;
}

/* Campo di input */
.field {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.field:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-wash);
}
.field-prefix {
  display: grid;
  place-items: center;
  padding-inline: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-faint);
  background: var(--bg-sunk);
  border-right: 1px solid var(--line);
  min-width: 2.2rem;
}
.field input {
  flex: 1;
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 1.02rem;
  letter-spacing: 0.02em;
  padding: 0.7rem 0.8rem;
  outline: none;
  min-width: 0;
}
.field.invalid { border-color: #e0533d; }
.field.invalid:focus-within { box-shadow: 0 0 0 3px rgba(224,83,61,0.18); }
.field-err {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #e0533d;
  min-height: 0.9rem;
}