/* whatislocalhost.com — shared styles */

:root {
  --bg: #ffffff;
  --bg-alt: #f6f8fb;
  --ink: #10151f;
  --ink-soft: #4a5468;
  --line: #e2e6ee;
  --navy: #0b0f19;
  --navy-soft: #171d2e;
  --accent: #17b897;
  --accent-ink: #0a4b3f;
  --accent-soft: #e4f8f2;
  --warn: #f0b429;
  --code-bg: #0b0f19;
  --radius: 14px;
  --maxw: 780px;
  font-size: 17px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

code, pre, kbd, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

a { color: var(--accent-ink); text-decoration-color: var(--accent); text-underline-offset: 2px; }
a:hover { color: var(--accent); }

img, svg { max-width: 100%; }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--navy); color: #fff; padding: .6rem 1rem; border-radius: 0 0 8px 0; z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Top bar ---------- */
.topbar {
  background: var(--navy);
  color: #dbe4f3;
}
.topbar-inner {
  max-width: 1080px; margin: 0 auto; padding: 0 1.25rem;
  display: flex; align-items: center; justify-content: space-between; height: 64px;
  gap: 1rem;
}
.brand {
  display: flex; align-items: center; gap: .55rem;
  color: #fff; font-weight: 700; font-size: 1.05rem; text-decoration: none;
  white-space: nowrap;
}
.brand .dot { color: var(--accent); }
.brand:hover { color: #fff; opacity: .9; }

.nav {
  display: flex; gap: 1.4rem; align-items: center; flex-wrap: wrap;
}
.nav a {
  color: #b9c4da; text-decoration: none; font-size: .93rem; font-weight: 500;
  padding: .4rem 0; border-bottom: 2px solid transparent;
}
.nav a:hover, .nav a[aria-current="page"] { color: #fff; border-bottom-color: var(--accent); }

.nav-toggle { display: none; }

@media (max-width: 720px) {
  .nav { display: none; }
  .nav-toggle {
    display: inline-flex; background: none; border: 1px solid #2b3350; color: #fff;
    border-radius: 8px; padding: .45rem .6rem; font-size: 1rem; cursor: pointer;
  }
  .topbar.open .nav {
    display: flex; flex-direction: column; align-items: flex-start;
    position: absolute; top: 64px; left: 0; right: 0; background: var(--navy-soft);
    padding: .5rem 1.25rem 1.25rem; gap: .4rem; box-shadow: 0 12px 24px rgba(0,0,0,.25);
  }
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--navy) 0%, #12192c 70%, #0f2e28 100%);
  color: #eef2fa;
  padding: 3.6rem 1.25rem 3.2rem;
}
.hero-inner { max-width: 900px; margin: 0 auto; }
.eyebrow {
  display: inline-flex; align-items: center; gap: .4rem;
  color: var(--accent); font-weight: 700; font-size: .82rem; letter-spacing: .06em;
  text-transform: uppercase; margin-bottom: 1rem;
}
.hero h1 {
  font-size: clamp(2rem, 4.4vw, 3rem); line-height: 1.12; margin: 0 0 1rem; letter-spacing: -0.01em;
}
.hero p.lede {
  font-size: 1.18rem; color: #cbd6ea; max-width: 640px; margin: 0 0 1.6rem;
}
.hero-ctas { display: flex; gap: .8rem; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--accent); color: #062b23; font-weight: 700; text-decoration: none;
  padding: .72rem 1.15rem; border-radius: 999px; font-size: .95rem;
  border: 1px solid transparent;
}
.btn:hover { background: #14a487; color: #062b23; }
.btn.ghost {
  background: transparent; color: #eef2fa; border-color: #2f3a54;
}
.btn.ghost:hover { background: rgba(255,255,255,.06); color: #fff; }

/* ---------- Layout ---------- */
main { display: block; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }
.wide { max-width: 1080px; }

section.block { padding: 2.6rem 0; }
section.block + section.block { border-top: 1px solid var(--line); }
section.block.alt { background: var(--bg-alt); }
section.block.alt > .container { padding-top: .1rem; padding-bottom: .1rem; }

h2 { font-size: 1.55rem; letter-spacing: -0.01em; margin: 0 0 1rem; }
h2 .num { color: var(--accent-ink); }
h3 { font-size: 1.15rem; margin: 1.6rem 0 .6rem; }
p { margin: 0 0 1.05rem; color: var(--ink); }
.sub { color: var(--ink-soft); }

/* ---------- Callout / quick answer ---------- */
.callout {
  background: var(--accent-soft); border: 1px solid #bfe9dc; border-radius: var(--radius);
  padding: 1.25rem 1.4rem; margin: 1.4rem 0;
}
.callout .label {
  display: inline-block; font-weight: 800; color: var(--accent-ink); font-size: .78rem;
  letter-spacing: .06em; text-transform: uppercase; margin-bottom: .5rem;
}
.callout p:last-child { margin-bottom: 0; }

.callout.warn { background: #fdf3df; border-color: #f0d9a0; }
.callout.warn .label { color: #7a5410; }

/* ---------- Cards / grid ---------- */
.grid { display: grid; gap: 1rem; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 720px) {
  .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }
}
.card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem 1.35rem;
  background: #fff;
}
.card h3 { margin-top: 0; }
.card.tight { padding: 1rem 1.15rem; }

/* ---------- Steps ---------- */
.steps { list-style: none; margin: 1.4rem 0; padding: 0; counter-reset: step; }
.steps > li {
  counter-increment: step;
  position: relative; padding: 0 0 1.4rem 2.6rem; border-left: 2px solid var(--line); margin-left: 1rem;
}
.steps > li:last-child { border-color: transparent; padding-bottom: 0; }
.steps > li::before {
  content: counter(step);
  position: absolute; left: -1.05rem; top: 0;
  width: 2rem; height: 2rem; border-radius: 50%;
  background: var(--navy); color: #fff; font-weight: 700; font-size: .9rem;
  display: flex; align-items: center; justify-content: center;
}
.steps h3 { margin-top: 0; }

/* ---------- Code blocks ---------- */
pre {
  background: var(--code-bg); color: #d8f3ea; border-radius: 10px; padding: 1rem 1.15rem;
  overflow-x: auto; font-size: .88rem; line-height: 1.55; margin: .8rem 0 1.2rem;
}
code.inline, p code, li code, td code {
  background: #eef1f7; color: #0b0f19; padding: .15rem .4rem; border-radius: 5px; font-size: .87em;
}
pre code { background: none; padding: 0; color: inherit; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; margin: 1.3rem 0; }
table { width: 100%; border-collapse: collapse; font-size: .93rem; min-width: 560px; }
th, td { text-align: left; padding: .7rem .8rem; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--bg-alt); font-weight: 700; }
tbody tr:hover { background: #fafcff; }

/* ---------- FAQ ---------- */
.faq details {
  border: 1px solid var(--line); border-radius: 10px; padding: .9rem 1.1rem; margin-bottom: .7rem; background: #fff;
}
.faq summary {
  font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent-ink); font-size: 1.2rem; }
.faq details[open] summary::after { content: "–"; }
.faq p { margin-top: .7rem; margin-bottom: 0; color: var(--ink-soft); }

/* ---------- Pill / badge ---------- */
.pill {
  display: inline-block; background: var(--accent-soft); color: var(--accent-ink); font-weight: 700;
  font-size: .76rem; letter-spacing: .03em; text-transform: uppercase; padding: .25rem .6rem; border-radius: 999px;
}
.pill.dark { background: var(--navy); color: #fff; }

/* ---------- Diagram (pure CSS/SVG illustration) ---------- */
.diagram {
  display: flex; align-items: center; justify-content: center; gap: 1rem; flex-wrap: wrap;
  margin: 1.6rem 0; padding: 1.6rem; background: var(--bg-alt); border-radius: var(--radius);
}
.diagram .node {
  background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: .9rem 1.1rem;
  text-align: center; font-size: .85rem; min-width: 140px;
}
.diagram .node strong { display: block; font-size: .95rem; margin-bottom: .2rem; }
.diagram .arrow { font-size: 1.4rem; color: var(--ink-soft); }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--navy); color: #fff; border-radius: 20px; padding: 2.2rem;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.2rem;
}
.cta-banner h2 { color: #fff; margin-bottom: .3rem; }
.cta-banner p { color: #b9c4da; margin-bottom: 0; }

/* ---------- Footer ---------- */
footer.site {
  background: var(--navy); color: #9aa7c2; padding: 2.6rem 1.25rem 3rem; margin-top: 2rem;
}
.footer-inner { max-width: 1080px; margin: 0 auto; }
.footer-grid { display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.footer-col h4 { color: #fff; font-size: .85rem; letter-spacing: .04em; text-transform: uppercase; margin: 0 0 .8rem; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: .5rem; }
.footer-col a { color: #9aa7c2; text-decoration: none; font-size: .92rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  margin-top: 2.2rem; padding-top: 1.4rem; border-top: 1px solid #232b42;
  font-size: .82rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}

.breadcrumb { font-size: .85rem; color: var(--ink-soft); margin-bottom: .6rem; }
.breadcrumb a { color: var(--ink-soft); }

.copy-btn {
  float: right; background: #1c2438; color: #9aa7c2; border: none; border-radius: 6px;
  font-size: .72rem; padding: .25rem .55rem; cursor: pointer;
}
.copy-btn:hover { color: #fff; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0);
}