/* CIDR toolkit — cyberpunk console. Orbitron for headings, JetBrains Mono for everything else. */

:root {
  --bg: #0b0f14;
  --bg-2: #0f151d;
  --panel: #111923;
  --panel-2: #16202c;
  --line: #22303f;
  --text: #d6e2ea;
  --dim: #7f93a3;
  --faint: #4f6273;
  --cyan: #00f0ff;
  --pink: #ff2bd6;
  --lime: #b6ff3b;
  --amber: #ffb547;
  --red: #ff4d6d;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --display: "Orbitron", "JetBrains Mono", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(900px 500px at 15% -10%, rgba(0, 240, 255, 0.10), transparent 60%),
    radial-gradient(800px 500px at 100% 20%, rgba(255, 43, 214, 0.10), transparent 60%),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: auto, auto, 40px 40px, 40px 40px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.55;
}
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
code { color: var(--cyan); background: rgba(0, 240, 255, 0.08); padding: 0 0.3rem; border-radius: 4px; font-size: 0.92em; }
::selection { background: rgba(255, 43, 214, 0.35); }

.scan {
  pointer-events: none;
  position: fixed; inset: 0; z-index: 0;
  background: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.12) 0 1px, transparent 1px 3px);
  mix-blend-mode: multiply;
  opacity: 0.6;
}

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 1.4rem; position: relative; z-index: 1; }

/* ---------------- header ---------------- */
.top {
  position: sticky; top: 0; z-index: 5;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.top .wrap { display: flex; align-items: center; gap: 1.4rem; padding-top: 0.75rem; padding-bottom: 0.75rem; }
.logo { font-family: var(--display); font-weight: 700; font-size: 1.05rem; letter-spacing: 0.08em; color: #fff; text-transform: uppercase; }
.logo:hover { text-decoration: none; }
.logo .glyph { color: var(--cyan); text-shadow: 0 0 12px var(--cyan); }
.logo .dim { color: var(--pink); }
.modules { display: flex; gap: 0.2rem; flex-wrap: wrap; }
.modules a { color: var(--dim); font-size: 0.82rem; padding: 0.3rem 0.6rem; border: 1px solid transparent; border-radius: 6px; letter-spacing: 0.04em; }
.modules a:hover { color: var(--cyan); border-color: var(--line); text-decoration: none; }
.home { margin-left: auto; color: var(--faint); font-size: 0.82rem; }

/* ---------------- hero ---------------- */
.hero { padding: 3.5rem 0 1.5rem; }
.tag { margin: 0 0 0.6rem; color: var(--pink); font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; }
h1 {
  margin: 0;
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(1.9rem, 4.2vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  color: #fff;
  text-transform: uppercase;
}
.neon { color: var(--cyan); text-shadow: 0 0 18px rgba(0, 240, 255, 0.55); }
.pink { color: var(--pink); text-shadow: 0 0 18px rgba(255, 43, 214, 0.55); }
.lede { max-width: 760px; color: var(--dim); margin: 1rem 0 0; }

/* ---------------- modules ---------------- */
.module {
  margin-top: 2.2rem;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border-radius: 12px;
  padding: 1.3rem 1.4rem 1.5rem;
  position: relative;
  box-shadow: 0 30px 60px -40px rgba(0, 240, 255, 0.25);
}
.module::before {
  content: ""; position: absolute; left: 0; top: 14px; bottom: 14px; width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--pink)); border-radius: 2px; opacity: 0.8;
}
.mod-head { display: flex; align-items: baseline; gap: 0.9rem; flex-wrap: wrap; margin-bottom: 1rem; }
.mod-head .num { font-family: var(--display); color: var(--pink); font-weight: 700; font-size: 0.9rem; letter-spacing: 0.1em; }
.mod-head h2 { margin: 0; font-family: var(--display); font-weight: 700; font-size: 1.15rem; letter-spacing: 0.06em; color: #fff; text-transform: uppercase; }
.mod-head .hint { color: var(--faint); font-size: 0.82rem; }

.row { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.field {
  background: #0a0e13;
  border: 1px solid var(--line);
  color: var(--text);
  font: inherit;
  padding: 0.55rem 0.8rem;
  border-radius: 8px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.field:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.15); }
.field.big { font-size: 1.25rem; padding: 0.7rem 1rem; min-width: 320px; flex: 1; letter-spacing: 0.02em; color: #fff; }
.field.bad { border-color: var(--red); box-shadow: 0 0 0 3px rgba(255, 77, 109, 0.15); }
.field.mono { width: 100%; resize: vertical; line-height: 1.5; }
input[type="number"].field { width: 7rem; }

.chips { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.chips button, .btn {
  background: transparent; border: 1px solid var(--line); color: var(--dim);
  font: inherit; font-size: 0.8rem; padding: 0.3rem 0.65rem; border-radius: 999px; cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.chips button:hover, .btn:hover { color: var(--cyan); border-color: var(--cyan); background: rgba(0, 240, 255, 0.06); }

.fields { display: flex; gap: 1rem; flex-wrap: wrap; align-items: flex-end; margin-bottom: 0.8rem; }
.fields label { display: flex; flex-direction: column; gap: 0.3rem; color: var(--dim); font-size: 0.8rem; letter-spacing: 0.04em; }
.fields.inline { align-items: center; }
.fields.inline label { flex-direction: row; align-items: center; gap: 0.5rem; font-size: 0.9rem; }
.fields .or { color: var(--faint); }
.fields .grow { flex: 1; }
.fields label .field { width: 100%; }
.fields label input[type="text"] { min-width: 220px; }

.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.card { background: rgba(255, 255, 255, 0.02); border: 1px solid var(--line); border-radius: 10px; padding: 1rem 1rem 1.1rem; }
.card h3 { margin: 0 0 0.8rem; font-size: 0.9rem; color: var(--cyan); font-weight: 500; letter-spacing: 0.02em; }
.note { margin: 0.6rem 0 0; color: var(--faint); font-size: 0.8rem; }

.two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 1rem; align-items: start; }

/* ---------------- outputs ---------------- */
.out { margin-top: 1rem; }
.result { min-height: 2.2rem; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 0.35rem 1.2rem; font-size: 0.92rem; }
.kv dt { color: var(--dim); }
.kv dd { margin: 0; color: #fff; word-break: break-all; }
.kv dd .sub { color: var(--faint); }
.kv dd.cyan { color: var(--cyan); }
.kv dd.pink { color: var(--pink); }
.kv dd.lime { color: var(--lime); }
.kv dd.amber { color: var(--amber); }
.kvgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem 2.5rem; }

.bits { font-size: 0.86rem; letter-spacing: 0.06em; word-break: break-all; }
.bits .n { color: var(--cyan); }
.bits .h { color: var(--pink); }
.bits .dot { color: var(--faint); }

.val { font-size: 1.15rem; color: #fff; }
.val .big { font-size: 1.35rem; color: var(--cyan); text-shadow: 0 0 10px rgba(0, 240, 255, 0.4); }
.val small { color: var(--dim); font-size: 0.8rem; display: block; margin-top: 0.2rem; }
.err { color: var(--red); font-size: 0.9rem; }
.warn { color: var(--amber); font-size: 0.9rem; }
.okline { color: var(--lime); font-size: 0.9rem; }

table.t { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
table.t th { text-align: left; color: var(--faint); font-weight: 500; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.3rem 0.6rem 0.5rem 0; border-bottom: 1px solid var(--line); }
table.t td { padding: 0.35rem 0.6rem 0.35rem 0; border-bottom: 1px solid rgba(34, 48, 63, 0.6); color: var(--text); white-space: nowrap; }
table.t td.c { color: var(--cyan); }
table.t td.p { color: var(--pink); }
table.t td.d { color: var(--dim); }
table.t tr:hover td { background: rgba(0, 240, 255, 0.03); }
.tscroll { overflow: auto; max-height: 480px; border: 1px solid var(--line); border-radius: 8px; padding: 0 0.8rem; }
.list { margin: 0; padding: 0; list-style: none; font-size: 0.95rem; }
.list li { padding: 0.25rem 0; border-bottom: 1px solid rgba(34, 48, 63, 0.6); color: var(--cyan); display: flex; gap: 1rem; }
.list li span { color: var(--faint); margin-left: auto; font-size: 0.82rem; }
.copyline { display: inline-flex; align-items: center; gap: 0.6rem; }
.copybtn { background: none; border: 1px solid var(--line); color: var(--faint); border-radius: 6px; font: inherit; font-size: 0.72rem; padding: 0.1rem 0.45rem; cursor: pointer; }
.copybtn:hover { color: var(--cyan); border-color: var(--cyan); }

/* ---------------- footer & toast ---------------- */
.foot { margin: 3rem 0 3rem; color: var(--faint); font-size: 0.82rem; border-top: 1px solid var(--line); padding-top: 1.2rem; }
.foot p { margin: 0 0 0.5rem; }
.toast {
  position: fixed; left: 50%; bottom: 1.4rem; transform: translateX(-50%) translateY(20px);
  background: var(--cyan); color: #06232a; padding: 0.45rem 0.9rem; border-radius: 999px; font-size: 0.85rem; font-weight: 700;
  opacity: 0; pointer-events: none; transition: opacity 0.2s ease, transform 0.2s ease; z-index: 9;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 900px) {
  .grid3 { grid-template-columns: 1fr; }
  .two { grid-template-columns: 1fr; }
  .kvgrid { grid-template-columns: 1fr; }
  .modules { display: none; }
  .field.big { min-width: 0; width: 100%; }
}