/* ============================================================
   subnet.css — Subnetting & IP Calculator visuale
   I 32 bit dell'IP tagliati tra rete e host dalla maschera /CIDR.
   Usa base.css + lab.css. Prefisso .sn-
   ============================================================ */

.sn-sec { position: relative; z-index: 2; }

/* ---------- Controlli ---------- */
.sn-controls { gap: 1.5rem 2.25rem; }
.sn-ip {
  display: inline-flex; align-items: center; gap: 0.25rem;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--bg); padding: 0.25rem 0.45rem;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.sn-ip:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-wash); }
.sn-oct {
  width: 2.7rem; border: 0; background: transparent; color: var(--ink);
  font-family: var(--font-mono); font-size: 1.02rem; font-weight: 600;
  text-align: center; padding: 0.35rem 0.15rem; outline: none;
  -moz-appearance: textfield;
}
.sn-oct::-webkit-outer-spin-button, .sn-oct::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.sn-ip .dot { color: var(--ink-faint); font-weight: 700; }

.sn-cidr-group { gap: 0.7rem; }
.sn-cidr {
  display: inline-flex; align-items: center;
  font-family: var(--font-mono); font-size: 1.05rem; font-weight: 600; color: var(--accent);
}
.sn-cidr input {
  width: 3.2ch; border: 0; background: transparent; color: var(--accent);
  font-family: var(--font-mono); font-size: 1.05rem; font-weight: 600; text-align: center;
  outline: none; -moz-appearance: textfield;
}
.sn-cidr input::-webkit-outer-spin-button, .sn-cidr input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.slider { accent-color: var(--accent); cursor: pointer; }
#cidrRange { max-width: 14rem; flex: 1 1 8rem; }

.sn-presets { display: flex; flex-wrap: wrap; gap: 0.45rem; }

/* ---------- Visualizzazione bit ---------- */
.sn-bits-panel { margin-top: 1.25rem; }
.sn-bits-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.2rem; }
.sn-bits-head h2 { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.2rem, 2.6vw, 1.6rem); letter-spacing: -0.015em; }
.sn-legend { display: flex; gap: 1.1rem; flex-wrap: wrap; font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-soft); }
.sn-legend span { display: inline-flex; align-items: center; gap: 0.4rem; }
.sn-swatch { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.sw-net { background: var(--accent); }
.sw-host { background: #d98a2b; }

.sn-bitgrid { overflow-x: auto; padding-bottom: 0.4rem; }
.sn-bitline { display: flex; flex-wrap: wrap; gap: 1.1rem 0.55rem; justify-content: center; }
.sn-octet {
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  position: relative;
}
.sn-octbits { display: flex; gap: 3px; }
.sn-bit {
  width: clamp(18px, 5vw, 24px); height: clamp(26px, 7vw, 32px);
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 0.92rem; font-weight: 600;
  border-radius: 5px; border: 1px solid transparent;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.sn-bit.net  { background: color-mix(in srgb, var(--accent) 16%, var(--bg)); color: var(--accent); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.sn-bit.host { background: color-mix(in srgb, #d98a2b 18%, var(--bg)); color: #b9711d; border-color: color-mix(in srgb, #d98a2b 38%, transparent); }
[data-theme="dark"] .sn-bit.host { color: #e6a44e; }
.sn-bit.boundary { box-shadow: -3px 0 0 0 var(--ink); }
.sn-octdec {
  font-family: var(--font-mono); font-size: 0.95rem; font-weight: 600; color: var(--ink);
}
.sn-octdot { align-self: center; font-family: var(--font-mono); font-size: 1.4rem; color: var(--ink-faint); padding: 0 0.1rem; margin-top: -1.4rem; }
@media (max-width: 600px) { .sn-octdot { display: none; } }

.sn-masktitle { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-faint); margin: 1.4rem 0 0.6rem; }
.sn-maskline .sn-bit {
  height: clamp(22px, 3.6vw, 28px); font-size: 0.8rem;
  background: var(--bg-sunk); color: var(--ink-soft); border-color: var(--line-soft);
}
.sn-maskline .sn-bit.one { color: var(--ink); font-weight: 700; }

/* ---------- Risultati ---------- */
.sn-results { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr)); gap: 1rem; margin-top: 1.25rem; }
.sn-res {
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: 12px;
  padding: 1.1rem 1.25rem;
}
.sn-res.span2 { grid-column: span 2; }
@media (max-width: 560px) { .sn-res.span2 { grid-column: span 1; } }
.sn-res-label { display: block; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.45rem; }
.sn-res-val { font-family: var(--font-mono); font-size: 1.12rem; font-weight: 600; color: var(--ink); word-break: break-word; }
.sn-res-sub { font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-faint); margin-top: 0.3rem; overflow-wrap: anywhere; }
.sn-badges { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.4rem; }
.sn-badge {
  font-family: var(--font-mono); font-size: 0.72rem; padding: 0.25rem 0.6rem; border-radius: 100px;
  border: 1px solid var(--line); color: var(--ink-soft);
}
.sn-badge.priv { color: #b9711d; border-color: color-mix(in srgb, #d98a2b 45%, transparent); background: color-mix(in srgb, #d98a2b 12%, transparent); }
.sn-badge.pub  { color: #3fae6b; border-color: color-mix(in srgb, #3fae6b 45%, transparent); background: color-mix(in srgb, #3fae6b 12%, transparent); }
[data-theme="dark"] .sn-badge.priv { color: #e6a44e; }

/* ---------- Divisione in sottoreti ---------- */
.sn-split-panel { margin-top: 1.25rem; }
.sn-split-ctrls { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; margin-bottom: 1.1rem; }
.sn-subnets { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 0.75rem; }
.sn-subnet {
  border: 1px solid var(--line); border-radius: 10px; padding: 0.7rem 0.9rem; background: var(--bg);
  font-family: var(--font-mono); font-size: 0.82rem;
}
.sn-subnet b { color: var(--accent); font-weight: 600; }
.sn-subnet small { display: block; color: var(--ink-faint); font-size: 0.72rem; margin-top: 0.2rem; }
.sn-note { font-size: 0.86rem; color: var(--ink-soft); line-height: 1.6; margin-top: 1rem; }
.sn-note b { color: var(--ink); }

select.sn-select {
  font-family: var(--font-mono); font-size: 0.85rem; padding: 0.45rem 0.7rem;
  border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); cursor: pointer;
}