/* ── Network Tools — page & tool styles ────────────────────────────
   Builds on css/shared.css design tokens (:root). Same visual family
   as TypingTrack (accent #059669, Space Grotesk + JetBrains Mono). */

main { max-width: 860px; margin: 0 auto; padding: 20px; }

/* ── Tool hero (icon + title + subtitle) ───────────────────────── */
.tool-hero { max-width: 860px; margin: 0 auto; padding: 36px 20px 4px; }
.tool-hero .hero-head { display: flex; align-items: center; gap: 16px; }
.tool-hero .hero-icon {
  flex-shrink: 0; width: 56px; height: 56px; border-radius: 14px;
  background: #0f0e0d; display: flex; align-items: center; justify-content: center;
}
.tool-hero .hero-icon svg { width: 30px; height: 30px; stroke: var(--accent); }
.tool-hero h1 { font-size: clamp(1.7rem, 4.5vw, 2.3rem); font-weight: 800; letter-spacing: -.5px; line-height: 1.15; }
.tool-hero .subtitle { color: var(--muted); font-size: 1.02rem; margin-top: 12px; max-width: 680px; }

/* ── Tool card ─────────────────────────────────────────────────── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow); padding: 24px; margin-top: 24px; }

/* ── Try chips ─────────────────────────────────────────────────── */
.try-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 18px; }
.try-row .try-label { font-size: .85rem; color: var(--muted); font-weight: 600; margin-right: 2px; }
.try-chip {
  display: inline-flex; align-items: baseline; gap: 7px;
  font-family: inherit; font-size: .85rem; font-weight: 600; color: var(--text);
  background: var(--surface); border: 1.5px solid var(--border); border-radius: var(--radius);
  padding: 7px 13px; min-height: 36px; cursor: pointer;
  transition: border-color .15s, background .15s, transform .1s;
}
.try-chip:hover { border-color: var(--accent); background: var(--accent-bg); transform: translateY(-1px); }
.try-chip .chip-sub { font-family: 'JetBrains Mono', monospace; font-size: .78rem; font-weight: 400; color: var(--muted); }

/* ── Input rows ────────────────────────────────────────────────── */
.field-label { display: block; font-size: .82rem; font-weight: 700; color: var(--text); margin-bottom: 7px; }
.input-row { display: flex; flex-wrap: wrap; gap: 8px; }
.input-row .net-input {
  flex: 1 1 240px; min-width: 0;
  font-family: 'JetBrains Mono', monospace; font-size: 1rem;
  padding: 13px 16px; border: 1.5px solid var(--border); border-radius: var(--radius);
  background: var(--surface); color: var(--text); outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.input-row .net-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(5,150,105,.14); }
.input-row .net-input::placeholder { color: var(--muted); }
.net-select {
  font-family: 'JetBrains Mono', monospace; font-size: .95rem;
  padding: 13px 14px; border: 1.5px solid var(--border); border-radius: var(--radius);
  background: var(--surface); color: var(--text); outline: none; cursor: pointer;
  transition: border-color .15s;
}
.net-select:focus { border-color: var(--accent); }
.inline-field { display: flex; align-items: center; gap: 8px; }
.inline-field > span { font-size: .82rem; font-weight: 700; color: var(--muted); }
.net-num { width: 72px; font-family: 'JetBrains Mono', monospace; font-size: 1rem; text-align: center; padding: 13px 8px; border: 1.5px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); outline: none; }
.net-num:focus { border-color: var(--accent); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 12px 26px;
  font-family: inherit; font-size: 1rem; font-weight: 700;
  border: none; border-radius: var(--radius); cursor: pointer;
  background: var(--accent); color: #fff;
  transition: background .15s, transform .1s, opacity .15s;
  white-space: nowrap;
}
.btn:hover { background: var(--accent-h); }
.btn:active { transform: scale(.98); }
.btn:disabled { opacity: .55; cursor: progress; }
.btn svg { width: 17px; height: 17px; }

.hint-line { font-size: .85rem; color: var(--muted); margin-top: 14px; }
.hint-line kbd {
  font-family: 'JetBrains Mono', monospace; font-size: .78rem;
  background: var(--surface2); border: 1px solid var(--border); border-bottom-width: 2px;
  border-radius: 5px; padding: 1px 6px; color: var(--text);
}

/* ── Trust row (free / fast / supported) ───────────────────────── */
.trust-row { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--border); }
.trust-item { display: inline-flex; align-items: center; gap: 7px; font-size: .88rem; font-weight: 600; color: var(--muted); }
.trust-item svg { width: 16px; height: 16px; stroke: var(--accent); flex-shrink: 0; }

/* ── Status / error line ───────────────────────────────────────── */
.status-line { min-height: 20px; margin-top: 14px; font-size: .9rem; font-weight: 600; }
.status-line.error { color: #b42318; }
.status-line.loading { color: var(--muted); }

/* ── Results ───────────────────────────────────────────────────── */
.results { margin-top: 20px; }
.results[hidden] { display: none; }
.result-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 16px; }
.result-meta .target { font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--text); }
.badge { font-family: 'JetBrains Mono', monospace; font-size: .78rem; font-weight: 600; color: var(--accent-fg); background: var(--accent-bg); padding: 3px 10px; border-radius: 999px; }
.badge-muted { color: var(--muted); background: var(--surface2); }

/* "What is my IP" — visitor's own-IP panel */
.self-ip-card { margin-top: 24px; }
.self-ip-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.self-ip-label { font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.self-ip-value { font-family: 'JetBrains Mono', monospace; font-size: clamp(1.4rem, 5vw, 2rem); font-weight: 700; color: var(--text); margin: 8px 0 4px; word-break: break-all; line-height: 1.2; }
.self-ip-meta { font-size: .9rem; color: var(--muted); }
.self-ip-copy { font: inherit; font-size: .8rem; font-weight: 600; color: var(--accent-fg); background: var(--accent-bg); border: 0; border-radius: 999px; padding: 4px 12px; cursor: pointer; }
.self-ip-copy:hover { background: #d8efe6; }
.self-ip-full { display: inline-block; margin-top: 12px; font: inherit; font-size: .85rem; font-weight: 600; color: var(--accent); background: none; border: 0; padding: 0; cursor: pointer; }
.self-ip-full:hover { color: var(--accent-h); text-decoration: underline; }

/* DNS record groups */
.record-group { margin-bottom: 14px; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.record-group-head { display: flex; align-items: center; justify-content: space-between; background: var(--surface2); padding: 10px 14px; }
.record-type { font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: .9rem; color: var(--accent-fg); }
.record-count { font-size: .76rem; font-weight: 600; color: var(--muted); }
.record-rows { list-style: none; }
.record-rows li { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; padding: 11px 14px; border-top: 1px solid var(--border); font-family: 'JetBrains Mono', monospace; font-size: .88rem; word-break: break-all; }
.record-rows li:first-child { border-top: none; }
.record-rows .rec-ttl { margin-left: auto; font-size: .74rem; color: var(--muted); white-space: nowrap; }
.record-group.empty .record-rows li { color: var(--muted); font-family: inherit; }

/* IP detail grid */
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.detail { background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.detail .d-key { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.detail .d-val { margin-top: 5px; font-family: 'JetBrains Mono', monospace; font-size: .96rem; font-weight: 600; color: var(--text); word-break: break-word; }

/* Ping stats + probes */
.ping-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); gap: 12px; margin-bottom: 18px; }
.ping-stat { background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 10px; text-align: center; }
.ping-stat .ps-num { font-family: 'JetBrains Mono', monospace; font-size: 1.5rem; font-weight: 600; color: var(--text); line-height: 1.1; }
.ping-stat .ps-num.accent { color: var(--accent); }
.ping-stat .ps-key { display: block; margin-top: 5px; font-size: .68rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.probe-list { list-style: none; display: flex; flex-direction: column; gap: 7px; }
.probe-row { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 10px 14px; background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius); font-family: 'JetBrains Mono', monospace; font-size: .86rem; }
.probe-seq { color: var(--muted); }
.probe-bar-wrap { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; }
.probe-bar { height: 100%; background: var(--accent); border-radius: 999px; min-width: 3px; }
.probe-rtt { font-weight: 700; white-space: nowrap; }
.probe-rtt.fail { color: #b42318; }
.probe-rtt.ok { color: var(--accent-fg); }

/* Empty state */
.empty-state { text-align: center; color: var(--muted); padding: 36px 20px; }
.empty-state svg { width: 38px; height: 38px; opacity: .5; margin-bottom: 10px; stroke: var(--muted); }
.empty-state p { font-size: .92rem; }

/* ── Tool hub grid (index) ─────────────────────────────────────── */
.hub-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(264px, 1fr)); gap: 18px; margin-top: 8px; }
.hub-card {
  display: block; text-decoration: none; position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 26px 24px; box-shadow: var(--shadow);
  transition: transform .18s, border-color .18s, box-shadow .18s;
}
.hub-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow-lg); text-decoration: none; }
.hub-card .hub-tag { position: absolute; top: 18px; right: 18px; font-size: .72rem; font-weight: 700; color: var(--accent-fg); background: var(--accent-bg); padding: 2px 9px; border-radius: 999px; }
.hub-card .hub-icon { width: 52px; height: 52px; border-radius: 12px; background: #0f0e0d; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.hub-card .hub-icon svg { width: 27px; height: 27px; stroke: var(--accent); }
.hub-card h2 { font-size: 1.2rem; font-weight: 800; color: var(--text); margin-bottom: 7px; }
.hub-card p { font-size: .9rem; color: var(--muted); line-height: 1.6; margin-bottom: 16px; }
.hub-card .hub-open { display: inline-flex; align-items: center; gap: 6px; font-size: .88rem; font-weight: 700; color: var(--accent); }

/* ── Content sections (how-it-works / faq) ─────────────────────── */
.section { max-width: 860px; margin: 16px auto; padding: 24px 20px; }
.section > h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 8px; }
.section > .section-sub { color: var(--muted); margin-bottom: 20px; }
.steps { display: grid; gap: 14px; }
.step { display: flex; gap: 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; box-shadow: var(--shadow); }
.step-num { flex-shrink: 0; width: 36px; height: 36px; border-radius: 50%; background: var(--accent-bg); color: var(--accent-fg); font-weight: 800; display: flex; align-items: center; justify-content: center; }
.step-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.step-body p { font-size: .92rem; color: var(--muted); line-height: 1.6; }

.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 10px; overflow: hidden; }
.faq summary { cursor: pointer; padding: 16px 18px; font-weight: 700; font-size: .98rem; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; float: right; color: var(--accent); font-weight: 700; }
.faq details[open] summary::after { content: '\2013'; }
.faq .faq-body { padding: 0 18px 16px; font-size: .92rem; color: var(--muted); line-height: 1.7; }
.faq .faq-body a { color: var(--accent); }

/* ── Footer ────────────────────────────────────────────────────── */
footer.page-footer { border-top: 1px solid var(--border); padding: 24px 20px; text-align: center; font-size: .82rem; color: var(--muted); margin-top: 24px; }
footer.page-footer nav { margin-bottom: 6px; }
footer.page-footer nav a { color: var(--muted); }
footer.page-footer nav a:hover { color: var(--text); }

/* ── Toast ─────────────────────────────────────────────────────── */
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); background: var(--text); color: #fff; padding: 11px 20px; border-radius: var(--radius); font-size: .88rem; font-weight: 600; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 200; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 620px) {
  .tool-hero .hero-icon { width: 48px; height: 48px; }
  .ping-stats { grid-template-columns: repeat(3, 1fr); }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; } }