/* ==========================================================================
   K&C NetFox – Netzwerk-Tools (/tools/)
   Komponenten des DHCP Option Rechners, übernommen aus dem eigenständigen
   Projekt /root/dhcp43 (site/assets/style.css). Alles unter .dhcp-tool
   gekapselt, weil Bootstrap/custom.css .btn, .hero, .card-kc, .section und
   .container bereits anders definieren. Seitenrahmen (Navbar, Hero, Footer,
   Info-Karten, CTA) kommt unverändert aus Bootstrap + custom.css.
   Nur auf den Tool-Seiten eingebunden (server/tools_pages.py).
   ========================================================================== */

.dhcp-tool {
  --kc-muted: #5b6878;
  --kc-border: #e9edf5;
  --kc-error: #c0392b;
  --kc-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.dhcp-tool code { font-family: var(--kc-mono); color: var(--kc-navy-dark); }

/* Buttons: Bootstrap-Basis, ergänzt um Icon-Abstand, Ghost- und Kopiert-Zustand */
.dhcp-tool .btn { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; font-weight: 600; white-space: nowrap; }
.dhcp-tool .btn svg { width: 1em; height: 1em; flex-shrink: 0; }
/* Bootstrap färbt :disabled über --bs-btn-disabled-*, das die eigenen
   Button-Klassen nicht setzen – ohne diese Regeln wären deaktivierte
   Kopieren-Buttons transparent */
.dhcp-tool .btn-orange:disabled { background-color: var(--kc-orange); border-color: var(--kc-orange); color: #fff; opacity: .45; }
.dhcp-tool .btn-outline-navy:disabled { background-color: transparent; border-color: var(--kc-navy); color: var(--kc-navy); opacity: .45; }
.dhcp-tool .btn-ghost { background: transparent; border-color: transparent; color: var(--kc-muted); padding: .4rem .55rem; }
.dhcp-tool .btn-ghost:hover { color: var(--kc-error); background: #fdf0ee; }
.dhcp-tool .btn.copied { background: #1f8a4c; border-color: #1f8a4c; color: #fff; }

/* Rechner-Karte, ragt in den Hero hinein */
.dhcp-tool .calc-wrap { margin-top: -4.5rem; position: relative; z-index: 3; }
.dhcp-tool .dhcp-card {
  background: #fff;
  border: 1px solid var(--kc-border);
  border-radius: 1rem;
  box-shadow: 0 1rem 2.5rem rgba(22,65,125,.12);
  padding: 2rem;
}
@media (max-width: 576px) { .dhcp-tool .dhcp-card { padding: 1.25rem; } }

/* Tabs */
.dhcp-tool .tabs-bar {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap;
  border-bottom: 2px solid var(--kc-border); margin: -.5rem 0 1.75rem;
}
.dhcp-tool .tabs { display: flex; gap: .25rem; overflow-x: auto; scrollbar-width: none; }
.dhcp-tool .tab {
  font: inherit; font-weight: 700; color: var(--kc-muted);
  background: none; border: 0; border-bottom: 3px solid transparent; margin-bottom: -2px;
  padding: .8rem 1rem; cursor: pointer; white-space: nowrap; text-align: left;
}
.dhcp-tool .tab:hover { color: var(--kc-navy); }
.dhcp-tool .tab[aria-selected="true"] { color: var(--kc-navy); border-bottom-color: var(--kc-orange); }
.dhcp-tool .tab small { display: block; font-weight: 600; font-size: .72rem; color: #8995a6; letter-spacing: .02em; }
@media (max-width: 700px) {
  .dhcp-tool .tabs-bar { border-bottom: 0; }
  .dhcp-tool .tabs { display: grid; grid-template-columns: 1fr 1fr; gap: .4rem; width: 100%; }
  .dhcp-tool .tab { white-space: normal; border: 1px solid var(--kc-border); border-radius: .6rem; margin: 0; padding: .6rem .8rem; }
  .dhcp-tool .tab[aria-selected="true"] { border-color: var(--kc-orange); box-shadow: inset 0 -3px 0 var(--kc-orange); }
}
.dhcp-tool .toggle { display: inline-flex; align-items: center; gap: .5rem; font-size: .9rem; font-weight: 600; color: var(--kc-muted); cursor: pointer; user-select: none; padding: .5rem 0; margin: 0; }
.dhcp-tool .toggle input { accent-color: var(--kc-navy); width: 1.05rem; height: 1.05rem; }

/* Segment-Umschalter */
.dhcp-tool .segmented { display: inline-flex; flex-wrap: wrap; gap: .25rem; background: var(--kc-bg-soft); border: 1px solid var(--kc-border); border-radius: .6rem; padding: .25rem; margin-bottom: 1.25rem; }
.dhcp-tool .segmented button {
  font: inherit; font-size: .9rem; font-weight: 600; color: var(--kc-muted);
  background: none; border: 0; border-radius: .45rem; padding: .5rem .9rem; cursor: pointer;
}
.dhcp-tool .segmented button:hover { color: var(--kc-navy); }
.dhcp-tool .segmented button[aria-pressed="true"] { background: #fff; color: var(--kc-navy); box-shadow: 0 1px 4px rgba(22,65,125,.15); }
@media (max-width: 576px) {
  .dhcp-tool .segmented { display: grid; width: 100%; }
  .dhcp-tool .segmented button { text-align: left; }
}

/* Formularfelder */
.dhcp-tool .field-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem 1.25rem; }
.dhcp-tool .field-grid .wide { grid-column: 1 / -1; }
.dhcp-tool #panel-u43 .field-grid { grid-template-columns: minmax(0, 3fr) minmax(0, 1fr); }
@media (max-width: 576px) { .dhcp-tool #panel-u43 .field-grid { grid-template-columns: 1fr; } }
.dhcp-tool .input-label { display: block; font-weight: 700; color: var(--kc-navy); margin-bottom: .5rem; }
.dhcp-tool .input-label small { font-weight: 500; color: var(--kc-muted); }
.dhcp-tool .input-row { display: flex; gap: .75rem; }
.dhcp-tool .kc-input, .dhcp-tool .kc-select, .dhcp-tool .kc-textarea {
  width: 100%; min-width: 0;
  font-family: var(--kc-mono); font-size: 1.1rem; font-weight: 600; color: var(--kc-text);
  padding: .65rem .9rem; background: #fff;
  border: 2px solid #d5dce9; border-radius: .6rem; outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.dhcp-tool .kc-input.lg { font-size: clamp(1.1rem, 4.6vw, 1.5rem); }
.dhcp-tool .kc-select { font-family: var(--bs-body-font-family); font-size: 1rem; cursor: pointer; }
.dhcp-tool .kc-textarea { resize: vertical; min-height: 5.5rem; font-size: 1rem; }
.dhcp-tool .kc-input::placeholder, .dhcp-tool .kc-textarea::placeholder { color: #aab4c3; font-weight: 400; }
.dhcp-tool .kc-input:focus, .dhcp-tool .kc-select:focus, .dhcp-tool .kc-textarea:focus { border-color: var(--kc-navy); box-shadow: 0 0 0 4px rgba(22,65,125,.12); }
.dhcp-tool .kc-input.is-invalid, .dhcp-tool .kc-textarea.is-invalid { border-color: var(--kc-error); box-shadow: 0 0 0 4px rgba(192,57,43,.1); }
.dhcp-tool .kc-input.is-valid, .dhcp-tool .kc-textarea.is-valid { border-color: var(--kc-orange); }
.dhcp-tool .input-help { font-size: .9rem; color: var(--kc-muted); margin-top: .5rem; min-height: 1.4em; }
.dhcp-tool .input-help.error { color: var(--kc-error); font-weight: 600; }
.dhcp-tool .input-help.warn { color: var(--kc-orange-dark); font-weight: 600; }
.dhcp-tool .link-btn { background: none; border: 0; padding: 0; font: inherit; color: var(--kc-navy); text-decoration: underline; cursor: pointer; }
.dhcp-tool .link-btn:hover { color: var(--kc-orange); }

/* Hinweisbox */
.dhcp-tool .note {
  margin-top: 1rem; padding: .8rem 1rem; border-radius: .6rem; font-size: .92rem;
  background: rgba(245,152,17,.08); border: 1px solid rgba(245,152,17,.35); color: #6b4a12;
}
.dhcp-tool .note code { color: inherit; background: rgba(255,255,255,.7); padding: .05rem .3rem; border-radius: .25rem; }

/* Hauptergebnis */
.dhcp-tool .result-main {
  margin-top: 1.5rem;
  background: var(--kc-navy-dark); color: #fff;
  border-left: 5px solid var(--kc-orange);
  border-radius: .75rem;
  padding: 1.25rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}
.dhcp-tool .result-main > div { min-width: 0; flex: 1 1 300px; }
.dhcp-tool .result-main .label { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: #cfd8ea; font-weight: 600; }
.dhcp-tool .result-main .value { font-family: var(--kc-mono); font-size: clamp(1.2rem, 3.6vw, 2rem); font-weight: 700; word-break: break-all; }
.dhcp-tool .result-main .value.long { font-size: clamp(.95rem, 2.2vw, 1.2rem); line-height: 1.45; }
.dhcp-tool .result-main .value .pre { color: var(--kc-orange); }
.dhcp-tool .result-main .value.empty { color: #7a8db0; }

/* Aufschlüsselung */
.dhcp-tool .breakdown { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.25rem; }
.dhcp-tool .byte {
  flex: 1 1 88px; min-width: 76px; text-align: center;
  border-radius: .6rem; padding: .6rem .4rem;
  background: var(--kc-bg-soft); border: 1px solid var(--kc-border);
}
.dhcp-tool .byte .hex { font-family: var(--kc-mono); font-size: 1.35rem; font-weight: 700; color: var(--kc-navy); word-break: break-all; }
.dhcp-tool .byte .desc { font-size: .75rem; color: var(--kc-muted); margin-top: .1rem; }
.dhcp-tool .byte.prefix { background: rgba(245,152,17,.1); border-color: rgba(245,152,17,.4); }
.dhcp-tool .byte.prefix .hex { color: var(--kc-orange-dark); }
.dhcp-tool .byte.gw { background: rgba(22,65,125,.07); border-color: rgba(22,65,125,.2); }
.dhcp-tool .byte.char { flex: 0 0 auto; min-width: 2.6rem; padding: .35rem .3rem; }
.dhcp-tool .byte.char .hex { font-size: .95rem; }
.dhcp-tool .byte.char .desc { font-family: var(--kc-mono); font-size: .8rem; color: var(--kc-text); font-weight: 600; }
.dhcp-tool .breakdown .group-label { flex-basis: 100%; font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--kc-muted); margin: .5rem 0 -.1rem; }

/* Schreibweisen */
.dhcp-tool .formats-head { display: flex; justify-content: space-between; align-items: end; gap: 1rem; flex-wrap: wrap; margin: 2.25rem 0 .75rem; }
.dhcp-tool .formats-head .section-title-eyebrow { font-size: .8rem; margin-bottom: .35rem; }
.dhcp-tool .formats-head h2 { font-size: 1.35rem; color: var(--kc-navy); margin: 0; }
.dhcp-tool .format-list { border: 1px solid var(--kc-border); border-radius: .75rem; overflow: hidden; }
.dhcp-tool .format-row {
  display: grid; grid-template-columns: minmax(170px, 1fr) minmax(0, 2fr) auto;
  gap: 1rem; align-items: center;
  padding: .85rem 1rem;
  border-top: 1px solid var(--kc-border);
}
.dhcp-tool .format-row:first-child { border-top: 0; }
.dhcp-tool .format-row:nth-child(even) { background: #fafbfd; }
.dhcp-tool .format-row .name { font-weight: 700; color: var(--kc-text); }
.dhcp-tool .format-row .where { font-size: .82rem; color: var(--kc-muted); }
.dhcp-tool .format-row code {
  display: block; font-size: .95rem; color: var(--kc-navy-dark);
  background: var(--kc-bg-soft); border-radius: .4rem; padding: .45rem .65rem;
  white-space: pre-wrap; word-break: break-all;
}
@media (max-width: 700px) {
  .dhcp-tool .format-row { grid-template-columns: 1fr; gap: .5rem; }
  .dhcp-tool .format-row .btn { justify-self: start; }
}

/* Routen-Tabelle (Option 121) */
.dhcp-tool .route-head, .dhcp-tool .route-row { display: grid; grid-template-columns: 1.3fr 1fr auto; gap: .75rem; align-items: start; }
.dhcp-tool .route-head { font-weight: 700; color: var(--kc-navy); margin-bottom: .5rem; }
.dhcp-tool .route-head span:last-child { width: 2.4rem; }
.dhcp-tool .route-row { margin-bottom: .6rem; }
.dhcp-tool .route-row .kc-input { font-size: 1rem; }
.dhcp-tool .route-row .err { grid-column: 1 / -1; color: var(--kc-error); font-size: .85rem; font-weight: 600; margin-top: -.3rem; }
.dhcp-tool .route-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: .5rem; }
@media (max-width: 576px) {
  .dhcp-tool .route-head { display: none; }
  .dhcp-tool .route-row { grid-template-columns: 1fr auto; padding-bottom: .6rem; border-bottom: 1px dashed var(--kc-border); }
  .dhcp-tool .route-row .gw-input { grid-column: 1 / 2; }
}

/* Decoder-Ergebnis */
.dhcp-tool .decode-list { margin-top: 1.25rem; border: 1px solid var(--kc-border); border-radius: .75rem; overflow: hidden; }
.dhcp-tool .decode-item { display: grid; grid-template-columns: minmax(150px, 1fr) 2fr; gap: 1rem; padding: .8rem 1rem; border-top: 1px solid var(--kc-border); }
.dhcp-tool .decode-item:first-child { border-top: 0; }
.dhcp-tool .decode-item:nth-child(even) { background: #fafbfd; }
.dhcp-tool .decode-item .k { font-weight: 700; }
.dhcp-tool .decode-item .k small { display: block; font-weight: 500; color: var(--kc-muted); font-family: var(--kc-mono); }
.dhcp-tool .decode-item .v { font-family: var(--kc-mono); word-break: break-all; color: var(--kc-navy-dark); font-weight: 600; }
.dhcp-tool .decode-item.bad .v { color: var(--kc-error); }
@media (max-width: 576px) { .dhcp-tool .decode-item { grid-template-columns: 1fr; gap: .25rem; } }

/* Info-Karten (Bootstrap card-kc) */
.dhcp-tool .info-icon {
  width: 48px; height: 48px; border-radius: .75rem; margin-bottom: 1rem;
  display: flex; align-items: center; justify-content: center;
  background: rgba(245,152,17,.12); color: var(--kc-orange); font-size: 1.4rem;
}
.dhcp-tool .info-list { margin: 0; padding-left: 1.1rem; color: var(--kc-muted); font-size: .95rem; }
.dhcp-tool .info-list li { margin-bottom: .3rem; }
.dhcp-tool .card-kc code, .dhcp-tool .dhcp-faq code { background: var(--kc-bg-soft); padding: .1rem .35rem; border-radius: .3rem; font-size: .85em; }