/* wiretoolkit.com — shared styles */

:root {
  --bg: #0B0F14;
  --panel: #0E1419;
  --border: #1B232C;
  --text: #E7ECF2;
  --muted: #A6B3C2;
  --dim: #5C6B7A;
  --teal: #2DD4BF;
  --teal-strong: #06141A;
  --blue: #5B8DEF;
  --amber: #F5A524;
  --radius: 10px;
  --max-width: 1280px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.mono { font-family: 'JetBrains Mono', 'SFMono-Regular', monospace; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ---------- Nav ---------- */

.site-nav {
  border-bottom: 1px solid var(--border);
}

.site-nav .wrap {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  font-size: 18px;
}

.brand .dot { color: var(--teal); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14.5px;
  font-weight: 500;
}

.nav-links a { color: var(--muted); }
.nav-links a:hover, .nav-links a.active { color: var(--text); }

.nav-links a.nav-cta {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 16px;
  color: var(--text);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.nav-toggle span {
  width: 20px;
  height: 1.6px;
  background: var(--text);
  display: block;
}

/* ---------- Hero ---------- */

.hero {
  border-bottom: 1px solid var(--border);
  padding: 88px 0 64px;
}

.eyebrow {
  color: var(--teal);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: 48px;
  line-height: 1.14;
  font-weight: 700;
  letter-spacing: -0.01em;
  max-width: 760px;
  margin: 0 0 18px;
}

.hero p {
  max-width: 600px;
  color: var(--muted);
  font-size: 16.5px;
  margin: 0 0 28px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-weight: 600;
  font-size: 14.5px;
  padding: 13px 22px;
  border-radius: 7px;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary { background: var(--teal); color: var(--teal-strong); }
.btn-primary:hover { background: #5EF0E0; }

.btn-secondary { border-color: var(--border); color: var(--text); background: transparent; }
.btn-secondary:hover { border-color: #37455A; }

/* ---------- Tool grid ---------- */

.tools-section { padding: 56px 0 8px; }

.category-heading {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 0 0 20px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 48px;
}

.tool-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--panel);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.15s ease;
}

.tool-card:hover { border-color: var(--teal); }

.tool-card.disabled { opacity: 0.55; cursor: default; }
.tool-card.disabled:hover { border-color: var(--border); }

.tool-card svg { flex-shrink: 0; }

.tool-card .tool-name { font-size: 16px; font-weight: 600; }
.tool-card .tool-desc { font-size: 13.5px; color: var(--dim); line-height: 1.5; }

.tool-card .soon {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------- Callout ---------- */

.callout {
  margin: 48px 0 0;
  padding: 36px 40px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.callout-title { font-size: 19px; font-weight: 600; max-width: 560px; }
.callout .eyebrow { margin-bottom: 8px; color: var(--amber); }

/* ---------- Footer ---------- */

.site-footer {
  margin-top: 64px;
  border-top: 1px solid var(--border);
}

.site-footer .wrap {
  padding: 28px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--dim);
}

/* ---------- Tool page: breadcrumb / header ---------- */

.tool-header { padding: 36px 0 4px; }

.breadcrumb {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  color: var(--dim);
  margin-bottom: 14px;
}

.breadcrumb a { color: var(--dim); }
.breadcrumb a:hover { color: var(--muted); }

.tool-header h1 { font-size: 28px; font-weight: 700; margin: 0 0 8px; }
.tool-header .sub { color: var(--dim); font-size: 14.5px; max-width: 640px; margin: 0; }

/* ---------- Calculator workspace ---------- */

.workspace {
  display: flex;
  gap: 24px;
  padding: 24px 0 0;
  align-items: flex-start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}

.calc-form {
  width: 360px;
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: 13px; font-weight: 500; color: var(--muted); }

.field input, .field select {
  font-family: 'JetBrains Mono', monospace;
  background: #131A21;
  border: 1px solid #263241;
  border-radius: 6px;
  padding: 11px 12px;
  color: var(--text);
  font-size: 14.5px;
  width: 100%;
}

.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--teal);
}

.field .hint { font-size: 12.5px; color: var(--dim); font-family: 'JetBrains Mono', monospace; }

.divider { height: 1px; background: var(--border); margin: 2px 0; }

.toggle-row { display: flex; align-items: center; justify-content: space-between; }
.toggle-row .label { font-size: 13px; font-weight: 600; }

.switch {
  position: relative;
  width: 38px;
  height: 21px;
  background: var(--border);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  padding: 0;
}
.switch.on { background: var(--teal); }
.switch .knob {
  position: absolute;
  top: 2px; left: 2px;
  width: 17px; height: 17px;
  background: var(--text);
  border-radius: 50%;
  transition: transform 0.15s ease;
}
.switch.on .knob { transform: translateX(17px); background: var(--teal-strong); }

.vlsm-rows { display: flex; flex-direction: column; gap: 10px; }
.vlsm-row { display: flex; gap: 8px; }
.vlsm-row input[type="text"] { flex: 1; font-family: inherit; font-size: 13.5px; }
.vlsm-row input[type="number"] { width: 90px; }
.vlsm-row button.remove {
  background: none; border: none; color: var(--dim); cursor: pointer; font-size: 16px; width: 32px;
}
.vlsm-row button.remove:hover { color: var(--amber); }

.add-row {
  background: none; border: none; color: var(--dim); font-size: 13px; text-align: left;
  cursor: pointer; padding: 4px 0;
}
.add-row:hover { color: var(--teal); }

.results { flex: 1 1 auto; display: flex; flex-direction: column; gap: 18px; min-width: 0; }

.summary-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.summary-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.summary-card .k { font-size: 11.5px; color: var(--dim); margin-bottom: 6px; }
.summary-card .v { font-family: 'JetBrains Mono', monospace; font-size: 15px; font-weight: 600; }

.addr-map { padding: 20px 22px; }
.addr-map .k { font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 12px; }
.addr-bar { display: flex; width: 100%; height: 36px; border-radius: 6px; overflow: hidden; }
.addr-seg {
  display: flex; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px; font-weight: 600;
  color: var(--teal-strong); white-space: nowrap; overflow: hidden;
}
.addr-seg.free { color: var(--dim); background: var(--border) !important; }

.result-table { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.result-table table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.result-table th {
  text-align: left; font-size: 11.5px; font-weight: 600; color: var(--dim);
  text-transform: uppercase; letter-spacing: 0.04em; padding: 14px 20px; border-bottom: 1px solid var(--border);
}
.result-table td { padding: 13px 20px; border-top: 1px solid var(--border); }
.result-table tr:first-child td { border-top: none; }
.result-table td.mono { font-family: 'JetBrains Mono', monospace; }

.error-box {
  border: 1px solid #3A2530; background: #1A1215; color: #F0A0AE;
  border-radius: var(--radius); padding: 16px 20px; font-size: 14px;
}

/* ---------- Article / write-up ---------- */

.article {
  max-width: 760px;
  margin: 64px auto 0;
  padding: 0 24px;
}

.article h2 { font-size: 22px; font-weight: 700; margin: 40px 0 14px; }
.article h2:first-child { margin-top: 0; }
.article p { color: var(--muted); font-size: 15.5px; line-height: 1.7; margin: 0 0 16px; }
.article code {
  font-family: 'JetBrains Mono', monospace; background: var(--panel); border: 1px solid var(--border);
  border-radius: 4px; padding: 2px 6px; font-size: 13.5px; color: var(--text);
}

.faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-item h3 { font-size: 15.5px; font-weight: 600; margin: 0 0 8px; }
.faq-item p { margin: 0; font-size: 14.5px; }

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .site-nav.open .nav-links {
    display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
    position: absolute; top: 72px; left: 0; right: 0; background: var(--bg);
    border-bottom: 1px solid var(--border); padding: 12px 24px 20px; z-index: 20;
  }
  .site-nav.open .nav-links a { padding: 10px 0; width: 100%; }

  .hero { padding: 44px 0 40px; }
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 15px; }

  .tool-grid { grid-template-columns: 1fr; }

  .workspace { flex-direction: column; }
  .calc-form { width: 100%; }
  .summary-strip { grid-template-columns: repeat(2, 1fr); }

  .result-table { overflow-x: auto; }
  .result-table table { min-width: 620px; }

  .callout { padding: 26px 22px; flex-direction: column; align-items: flex-start; }
}