/* Redirect Tracer — mylesagnew.com/redirect-tracer/
   Base layout shared with /pqctest/ (same tokens, nav, form, FAQ, footer) so the
   tools look like one family; tool-specific rules are at the bottom.
   Self-contained and CSP-clean. Lives in /redirect-tracer/, so shared assets use root-absolute paths. */

@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-v20-latin-regular.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: optional;
}
@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-v20-latin-600.woff2') format('woff2');
  font-weight: 600; font-style: normal; font-display: optional;
}
@font-face {
  font-family: 'Playfair Display';
  src: url('/fonts/playfair-display-v40-latin-700.woff2') format('woff2');
  font-weight: 700; font-style: normal; font-display: optional;
}

:root {
  --bg: #f3f3f7;
  --bg2: #ebebee;
  --bg3: #e4e4e4;
  --accent: #0066cc;
  --accent2: #1a7add;
  --text: #191a1f;
  --muted: #66656a;
  --border: rgba(1,1,8,0.1);
  --border-accent: rgba(0,102,204,0.3);
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
  --serif: 'Playfair Display', Georgia, 'Times New Roman', serif;

  --content: 760px;   /* single content column width */

  --ok: #0f8a4f;
  --ok-bg: rgba(15,138,79,0.08);
  --warn: #b26a00;
  --warn-bg: rgba(217,119,6,0.08);
  --neutral: #55555c;
  --neutral-bg: rgba(85,85,92,0.07);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.7;
  font-size: 1rem;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

code {
  font-family: ui-monospace, 'SFMono-Regular', 'Cascadia Code', Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 0.08em 0.4em;
  border-radius: 4px;
  word-break: break-word;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 0.6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }

/* NAV */
nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; flex-wrap: wrap;
  padding: 1rem 2rem;
  background: rgba(248,248,250,0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.nav-logo {
  font-family: var(--serif); font-weight: 700; font-size: 1.05rem;
  letter-spacing: 0.05em; color: var(--text); text-decoration: none;
}
.nav-logo span { color: var(--accent); }
.nav-links {
  list-style: none; display: flex; gap: 1.4rem; flex-wrap: wrap;
  margin: 0; padding: 0; align-items: center;
}
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: 0.82rem;
  letter-spacing: 0.02em; transition: color 0.15s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a[aria-current="page"] { color: var(--accent); font-weight: 600; }

/* CONTENT COLUMN — left-aligned, narrow, utilitarian */
main {
  max-width: var(--content);
  margin: 0 auto;
  padding: 2.6rem 1.5rem 3rem;
}

.tool h1 {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(1.7rem, 4vw, 2.3rem); line-height: 1.15;
  letter-spacing: -0.02em; margin: 0 0 0.8rem;
}
.tool .intro {
  font-size: 0.96rem; color: var(--muted); margin: 0 0 1.8rem; max-width: 66ch;
}
.tool .intro strong { color: var(--text); font-weight: 600; }

/* FORM — label + input + button on one line, SSL-Labs style */
.scan-form {
  display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap;
  padding: 1.3rem 1.4rem 1rem;
  background: #fff; border: 1px solid var(--border); border-radius: 10px;
}
.scan-form label {
  font-weight: 600; font-size: 0.92rem; color: var(--text);
}
.scan-input {
  flex: 1 1 300px; min-width: 0; font-family: var(--sans); font-size: 1rem;
  padding: 0.62rem 0.8rem; color: var(--text); background: #fff;
  border: 1px solid var(--border); border-radius: 6px;
}
.scan-input:focus { outline: 2px solid var(--border-accent); outline-offset: 1px; border-color: var(--accent); }
.btn-primary {
  display: inline-block; text-decoration: none; cursor: pointer;
  font-family: var(--sans); font-size: 0.9rem; font-weight: 600;
  letter-spacing: 0.02em; padding: 0.62rem 1.4rem; border-radius: 6px;
  background: var(--accent); color: #fff; border: 1px solid var(--accent);
  transition: background 0.2s;
}
.btn-primary:hover { background: var(--accent2); }
.btn-primary[disabled] { opacity: 0.6; cursor: progress; }
.scan-hint { font-size: 0.78rem; color: var(--muted); margin: 0.7rem 0 0; }
.scan-hint code { font-size: 0.9em; }

/* RESULT PANEL */
.scan-result {
  margin: 1.4rem 0 0; text-align: left;
  border: 1px solid var(--border); border-left-width: 4px;
  border-radius: 10px; background: #fff; padding: 1.3rem 1.4rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}
.scan-result.is-ok { border-left-color: var(--ok); background: var(--ok-bg); }
.scan-result.is-warn { border-left-color: var(--warn); background: var(--warn-bg); }
.scan-result.is-neutral { border-left-color: var(--neutral); background: var(--neutral-bg); }
.scan-result.is-busy { border-left-color: var(--accent); }
.scan-result h3 {
  font-family: var(--serif); font-size: 1.2rem; margin: 0 0 0.4rem; line-height: 1.25; word-break: break-word;
}
.scan-result.is-ok h3 { color: #0c6b3d; }
.scan-result.is-warn h3 { color: #8a5200; }
.scan-result p { margin: 0 0 0.6rem; font-size: 0.9rem; color: #3a3a40; line-height: 1.7; }
.scan-meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem; margin-top: 0.9rem; }
.scan-meta span {
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 0.78rem; color: var(--muted);
}
.scan-meta strong { color: var(--text); font-weight: 600; }

/* ABOUT + FAQ — kept compact and below the tool */
.about { margin-top: 3rem; border-top: 1px solid var(--border); padding-top: 2.4rem; }
.about h2 {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(1.25rem, 2.5vw, 1.55rem); line-height: 1.2;
  margin: 0 0 1rem; letter-spacing: -0.01em;
}
.about h2:not(:first-child) { margin-top: 2.4rem; }
.about p { font-size: 0.94rem; color: #3a3a40; line-height: 1.8; margin: 0 0 1rem; max-width: 68ch; }
.about p em { color: var(--text); font-style: italic; }

.faq { display: grid; gap: 0.7rem; margin-top: 0.4rem; }
.faq details {
  border: 1px solid var(--border); border-radius: 8px;
  background: #fff; padding: 0.1rem 1.1rem;
}
.faq summary {
  cursor: pointer; padding: 0.85rem 0; font-weight: 600; font-size: 0.93rem;
  list-style: none; position: relative; padding-right: 1.5rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; position: absolute; right: 0; top: 0.75rem;
  color: var(--accent); font-size: 1.2rem; line-height: 1;
}
.faq details[open] summary::after { content: '\2212'; }
.faq details p { margin: 0 0 0.9rem; font-size: 0.89rem; color: var(--muted); line-height: 1.75; }

/* FOOTER */
footer {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  padding: 2rem; background: var(--bg2);
  border-top: 1px solid var(--border);
  font-size: 0.72rem; color: var(--muted); letter-spacing: 0.02em;
}
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--accent); }

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}

@media (max-width: 640px) {
  nav { padding: 0.9rem 1.1rem; }
  .nav-links { gap: 0.9rem; }
  main { padding: 1.8rem 1.1rem 2.4rem; }
  .scan-form { flex-direction: column; align-items: stretch; }
  .scan-form label { margin-bottom: 0.1rem; }
  .btn-primary { width: 100%; }
}

/* ======================= Redirect Tracer specifics ======================= */

:root {
  --fix: #c0392b;                         /* dark value comes from theme.css */
  --err-bg: rgba(192,57,43,0.07);
  --mono: ui-monospace, 'SFMono-Regular', 'Cascadia Code', Menlo, Consolas, monospace;
}

.rt-options {
  flex-basis: 100%; display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.8rem; color: var(--muted);
}
.rt-options label { font-weight: 400; font-size: 0.8rem; color: var(--muted); }
.rt-select {
  font-family: var(--sans); font-size: 0.82rem; color: var(--input-text, var(--text));
  background: var(--input-bg, #fff); border: 1px solid var(--border); border-radius: 6px;
  padding: 0.25rem 0.5rem;
}

.scan-result.is-error { border-left-color: var(--fix); background: var(--err-bg); }
.scan-result.is-error h3 { color: var(--fix); }

/* Summary card */
.rt-summary {
  margin: 1.4rem 0 0; padding: 1.3rem 1.4rem;
  background: var(--surface, #fff); border: 1px solid var(--border); border-left: 4px solid var(--ok);
  border-radius: 10px;
}
.rt-summary.is-error { border-left-color: var(--fix); }
.rt-summary.is-redirect { border-left-color: var(--warn); }
.rt-summary-head { display: flex; justify-content: space-between; align-items: center; gap: 0.8rem; flex-wrap: wrap; }
.rt-eyebrow { margin: 0; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.rt-actions { display: flex; gap: 0.4rem; }
.rt-btn-ghost {
  font-family: var(--sans); font-size: 0.76rem; font-weight: 600; cursor: pointer;
  padding: 0.3rem 0.7rem; border-radius: 6px;
  background: transparent; color: var(--muted); border: 1px solid var(--border);
}
.rt-btn-ghost:hover { color: var(--accent); border-color: var(--border-accent); }
.rt-final-url { margin: 0.6rem 0 0.5rem; font-family: var(--mono); font-size: 1rem; word-break: break-all; color: var(--text); }
.rt-alert { margin: 0.9rem 0 0; padding: 0.6rem 0.8rem; border-radius: 6px; background: var(--err-bg); color: var(--fix); font-size: 0.86rem; }
.rt-stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.8rem;
  margin: 1.1rem 0 0; padding: 1rem 0 0; border-top: 1px solid var(--border);
}
.rt-stats dt { font-size: 0.68rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.rt-stats dd { margin: 0.15rem 0 0; font-family: var(--mono); font-size: 1.1rem; font-weight: 600; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rt-stats dd.is-small { font-size: 0.8rem; font-weight: 400; padding-top: 0.25rem; }

/* Status badges */
.rt-badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.1rem 0.55rem; border-radius: 999px;
  font-size: 0.74rem; font-weight: 600; line-height: 1.6;
  border: 1px solid currentColor;
}
.rt-badge code { background: none; border: 0; padding: 0; font-size: 1em; color: inherit; }
.rt-badge.is-ok { color: var(--ok); background: var(--ok-bg); }
.rt-badge.is-redirect { color: var(--warn); background: var(--warn-bg); }
.rt-badge.is-error { color: var(--fix); background: var(--err-bg); }
.rt-chip {
  display: inline-block; padding: 0.1rem 0.55rem; border-radius: 999px;
  font-size: 0.72rem; color: var(--muted); background: var(--neutral-bg); border: 1px solid var(--border);
}
.rt-meta { font-family: var(--mono); font-size: 0.74rem; color: var(--muted); }

/* Timeline */
.rt-chain-title { margin: 2rem 0 0.9rem; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.rt-chain { list-style: none; margin: 0; padding: 0; }
.rt-hop { position: relative; padding: 0 0 1rem 2.6rem; }
.rt-hop:not(:last-child)::before {
  content: ''; position: absolute; left: 0.9rem; top: 2.1rem; bottom: 0.1rem;
  width: 2px; margin-left: -1px; background: var(--border);
}
.rt-node {
  position: absolute; left: 0; top: 0.7rem;
  width: 1.8rem; height: 1.8rem; border-radius: 50%;
  display: grid; place-items: center;
  font-size: 0.75rem; font-weight: 700; color: #fff;
  box-shadow: 0 0 0 4px var(--bg);
}
.rt-node.is-ok, .rt-dot.is-ok { background: var(--ok); }
.rt-node.is-redirect, .rt-dot.is-redirect { background: var(--warn); }
.rt-node.is-error, .rt-dot.is-error { background: var(--fix); }

.rt-card {
  background: var(--surface, #fff); border: 1px solid var(--border); border-left: 4px solid var(--border);
  border-radius: 10px; overflow: hidden;
}
.rt-card.is-ok { border-left-color: var(--ok); }
.rt-card.is-redirect { border-left-color: var(--warn); }
.rt-card.is-error { border-left-color: var(--fix); }
.rt-card > summary {
  list-style: none; cursor: pointer; padding: 0.85rem 2.4rem 0.85rem 1rem; position: relative;
}
.rt-card > summary::-webkit-details-marker { display: none; }
.rt-card > summary::after {
  content: '+'; position: absolute; right: 1rem; top: 0.75rem;
  color: var(--accent); font-size: 1.2rem; line-height: 1;
}
.rt-card[open] > summary::after { content: '\2212'; }
.rt-card > summary:hover { background: var(--neutral-bg); }
.rt-card > summary:focus-visible { outline: 2px solid var(--border-accent); outline-offset: -2px; }
.rt-hop-top { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem 0.6rem; }
.rt-hop-url { margin: 0.4rem 0 0; font-family: var(--mono); font-size: 0.86rem; word-break: break-all; color: var(--text); }
.rt-hop-next { margin: 0.2rem 0 0; font-size: 0.78rem; color: var(--muted); word-break: break-all; }
.rt-hop-error { margin: 0.5rem 0 0; padding: 0.45rem 0.7rem; border-radius: 6px; background: var(--err-bg); color: var(--fix); font-size: 0.84rem; }
.rt-hop-error small { display: block; font-family: var(--mono); font-size: 0.72rem; opacity: 0.8; word-break: break-all; }
.rt-note { margin: 0.35rem 0 0; font-size: 0.78rem; color: var(--warn); }
.rt-retry { margin-top: 0.6rem; }

.rt-details { border-top: 1px solid var(--border); padding: 0.4rem 1rem 1rem; }
.rt-details h4 {
  margin: 0.9rem 0 0.4rem; font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted);
}
.rt-reqline { margin: 0 0 0.4rem; font-family: var(--mono); font-size: 0.74rem; color: var(--muted); word-break: break-all; }
.rt-empty { margin: 0; font-size: 0.82rem; color: var(--muted); }
.rt-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 6px; }
.rt-table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 0.74rem; }
.rt-table th, .rt-table td { padding: 0.3rem 0.6rem; text-align: left; vertical-align: top; border-top: 1px solid var(--border); }
.rt-table tr:first-child th, .rt-table tr:first-child td { border-top: 0; }
.rt-table th { width: 32%; white-space: nowrap; font-weight: 600; color: var(--text); }
.rt-table td { word-break: break-all; color: var(--prose-muted, #3a3a40); }
.rt-table tr.is-key { background: var(--badge-bg, #eef4fc); }

/* Timing waterfall — segment widths are set from JS via the CSSOM (CSP-safe). */
.rt-bar { display: flex; height: 0.6rem; border-radius: 999px; overflow: hidden; background: var(--bg3); }
.rt-seg { height: 100%; min-width: 2px; }
.rt-seg.dns, .rt-key.dns { background: #38bdf8; }
.rt-seg.connect, .rt-key.connect { background: #a78bfa; }
.rt-seg.tls, .rt-key.tls { background: #e879f9; }
.rt-seg.wait, .rt-key.wait { background: #fbbf24; }
.rt-seg.download, .rt-key.download { background: #34d399; }
.rt-timings { display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; margin: 0.5rem 0 0; padding: 0; list-style: none; font-size: 0.74rem; color: var(--muted); }
.rt-timings li { display: inline-flex; align-items: center; gap: 0.35rem; }
.rt-timings strong { font-family: var(--mono); font-weight: 600; color: var(--text); }
.rt-key { width: 0.55rem; height: 0.55rem; border-radius: 50%; display: inline-block; }

.rt-legend { list-style: none; margin: 0 0 1rem; padding: 0; display: grid; gap: 0.4rem; font-size: 0.92rem; color: var(--prose-muted, #3a3a40); }
.rt-legend li { display: flex; align-items: center; gap: 0.6rem; }
.rt-dot { width: 0.7rem; height: 0.7rem; border-radius: 50%; flex: none; }

.rt-busy::after {
  content: ''; display: inline-block; width: 0.9rem; height: 0.9rem; margin-left: 0.5rem; vertical-align: -0.1rem;
  border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%;
  animation: rt-spin 0.8s linear infinite;
}
@keyframes rt-spin { to { transform: rotate(360deg); } }

@media (max-width: 640px) {
  /* In the stacked (column) form, flex-basis would become a height — size by content instead. */
  .scan-form .scan-input { flex: none; width: 100%; }
  .rt-options { flex-basis: auto; }
  .rt-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rt-hop { padding-left: 2.3rem; }
  .rt-table th { width: auto; white-space: normal; }
  .rt-table th, .rt-table td { display: block; }
  .rt-table td { border-top: 0; padding-top: 0; }
}