/* ════════════════════════════════════════════════════════════════
   Profinet / IP Rechner — Styles
   Akzentfarbe: #0277BD (Industrial-Blau)
   ════════════════════════════════════════════════════════════════ */

:root {
  --pn-accent:      #0277BD;
  --pn-accent-dark: #01579B;
  --pn-accent-glow: rgba(2,119,189,.13);
  --pn-accent-lite: #E1F5FE;
  --pn-net-color:   #0277BD;
  --pn-bc-color:    #C62828;
  --pn-first-color: #2E7D32;
  --pn-last-color:  #6A1B9A;
  --pn-ok-color:    #2E7D32;
  --pn-err-color:   #C62828;
  --pn-warn-color:  #E65100;
  --pn-border:      #E2E8F0;
  --pn-bg:          #F8FAFC;
  --pn-bg-card:     #FFFFFF;
  --pn-text:        #1E293B;
  --pn-muted:       #64748B;
  --pn-radius:      10px;
}

/* ── Wrapper ─────────────────────────────────────────────────── */
.pn-wrapper {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

/* ── Header ──────────────────────────────────────────────────── */
.pn-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.pn-header-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--pn-accent), var(--pn-accent-dark));
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: #fff;
  box-shadow: 0 3px 8px rgba(2,119,189,.35);
  flex-shrink: 0;
}
.pn-title    { font-size: 1.35rem; font-weight: 700; color: var(--pn-text); margin: 0; }
.pn-subtitle { font-size: 0.82rem; color: var(--pn-muted); margin: 0; }

/* ── Main grid ───────────────────────────────────────────────── */
.pn-main {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 1.25rem;
  align-items: start;
}

/* ── Card ─────────────────────────────────────────────────────── */
.pn-card {
  background: var(--pn-bg-card);
  border: 1.5px solid var(--pn-border);
  border-radius: var(--pn-radius);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
}
.pn-card:last-child { margin-bottom: 0; }
.pn-card-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--pn-muted);
  margin-bottom: 0.9rem;
}

/* ── Fields ──────────────────────────────────────────────────── */
.pn-field { margin-bottom: 0.9rem; }
.pn-field:last-child { margin-bottom: 0; }
.pn-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--pn-text);
  margin-bottom: 0.35rem;
}

/* IP Octet row */
.pn-ip-row {
  display: flex;
  align-items: center;
  gap: 3px;
}
.pn-octet {
  width: 56px;
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  font-family: 'SF Mono', 'Fira Code', monospace;
  padding: .35rem .3rem;
  border: 1.5px solid var(--pn-border);
  border-radius: 7px;
  background: var(--pn-bg);
  color: var(--pn-text);
  outline: none;
  transition: border-color .15s;
  -moz-appearance: textfield;
}
.pn-octet::-webkit-outer-spin-button,
.pn-octet::-webkit-inner-spin-button { -webkit-appearance: none; }
.pn-octet:focus { border-color: var(--pn-accent); background: #fff; }
.pn-octet.pn-octet-invalid { border-color: #ef4444 !important; color: #ef4444; background: #FFF5F5; }
.pn-octet.pn-octet-sm { width: 48px; font-size: 0.88rem; padding: .25rem .2rem; }

.pn-dot {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--pn-muted);
  line-height: 1;
  padding: 0 1px;
}

/* Mask + CIDR row */
.pn-mask-wrap { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.pn-cidr-wrap { display: flex; align-items: center; gap: 4px; }
.pn-cidr-slash { font-size: 1.3rem; font-weight: 700; color: var(--pn-accent); }
.pn-cidr-input {
  width: 50px;
  text-align: center;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: 'SF Mono', 'Fira Code', monospace;
  padding: .3rem .3rem;
  border: 1.5px solid var(--pn-border);
  border-radius: 7px;
  background: var(--pn-bg);
  color: var(--pn-accent);
  outline: none;
  transition: border-color .15s;
  -moz-appearance: textfield;
}
.pn-cidr-input::-webkit-outer-spin-button,
.pn-cidr-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.pn-cidr-input:focus { border-color: var(--pn-accent); background: #fff; }
.pn-cidr-label { font-size: 0.75rem; color: var(--pn-muted); font-weight: 600; }

/* Presets */
.pn-presets { display: flex; flex-wrap: wrap; gap: 5px; }
.pn-preset {
  font-size: 0.74rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  border: 1.5px solid var(--pn-border);
  background: var(--pn-bg);
  color: var(--pn-text);
  cursor: pointer;
  transition: border-color .15s, background .15s, color .15s;
  white-space: nowrap;
}
.pn-preset:hover  { border-color: var(--pn-accent); background: var(--pn-accent-lite); color: var(--pn-accent); }
.pn-preset:active { transform: scale(.95); }

/* ── Profinet Geräteplan ─────────────────────────────────────── */
.pn-pn-grid { display: flex; flex-direction: column; gap: 6px; margin-bottom: 0.75rem; }
.pn-pn-row {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--pn-bg);
  border: 1px solid var(--pn-border);
  border-radius: 7px;
  padding: 6px 10px;
}
.pn-pn-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--pn-muted);
  min-width: 90px;
}
.pn-pn-status {
  margin-left: auto;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}
.pn-status-ok   { color: var(--pn-ok-color); }
.pn-status-err  { color: var(--pn-err-color); }
.pn-status-warn { color: var(--pn-warn-color); }

.pn-legend { display: flex; gap: 1rem; flex-wrap: wrap; font-size: 0.72rem; }
.pn-leg { display: flex; align-items: center; gap: 4px; font-weight: 600; }
.pn-leg-ok   { color: var(--pn-ok-color); }
.pn-leg-err  { color: var(--pn-err-color); }
.pn-leg-warn { color: var(--pn-warn-color); }

/* ── Result cards ────────────────────────────────────────────── */
.pn-result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 1rem;
}
.pn-result-card {
  background: var(--pn-bg-card);
  border: 1.5px solid var(--pn-border);
  border-radius: var(--pn-radius);
  padding: .65rem .9rem;
  text-align: center;
}
.pn-rc-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--pn-muted);
  font-weight: 700;
  margin-bottom: 4px;
}
.pn-rc-val {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--pn-text);
  word-break: break-all;
}
.pn-rc-broadcast { color: var(--pn-bc-color); }
.pn-rc-first     { color: var(--pn-first-color); }
.pn-rc-last      { color: var(--pn-last-color); }
.pn-rc-hosts     { color: var(--pn-accent); font-size: 1.1rem; }

/* ── Detail table ────────────────────────────────────────────── */
.pn-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.pn-table td { padding: 5px 4px; border-bottom: 1px solid #F1F5F9; }
.pn-table td:first-child { color: var(--pn-muted); width: 55%; }
.pn-mono {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-weight: 700;
  color: var(--pn-text);
}

/* ── Binary display ──────────────────────────────────────────── */
.pn-binary-grid { display: flex; flex-direction: column; gap: 6px; }
.pn-bin-row { display: flex; align-items: flex-start; gap: 8px; }
.pn-bin-label {
  font-size: 0.68rem;
  color: var(--pn-muted);
  font-weight: 600;
  min-width: 88px;
  padding-top: 4px;
}
.pn-bin-bits {
  display: flex;
  gap: 2px;
  flex-wrap: nowrap;
  flex: 1;
  overflow: hidden;
}
.pn-bin-octet {
  display: flex;
  gap: 1px;
}
.pn-bin-octet + .pn-bin-octet { margin-left: 5px; }
.pn-bin-bit {
  width: 14px; height: 18px;
  border-radius: 3px;
  font-size: 0.62rem;
  font-family: monospace;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.pn-bin-bit.b1 { background: var(--pn-accent); color: #fff; }
.pn-bin-bit.b0 { background: #E8F4FD; color: var(--pn-accent); }
/* Host portion of the IP (after subnet prefix) */
.pn-bin-bit.b1-host { background: var(--pn-first-color); color: #fff; }
.pn-bin-bit.b0-host { background: #E8F5E9; color: var(--pn-first-color); }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 920px) {
  .pn-main { grid-template-columns: 1fr; }
  .pn-result-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .pn-result-grid { grid-template-columns: 1fr 1fr; }
  .pn-bin-bit { width: 11px; height: 16px; font-size: .55rem; }
  .pn-octet { width: 46px; font-size: .9rem; }
}