/* Shared dark-theme stylesheet for sounddone.com/blog/* articles.
   Deployed to /var/www/sounddone.com/blog/blog.css */
:root {
  --ink-950: #08090a;
  --ink-900: #0e0f11;
  --ink-850: #131517;
  --fg: #ededed;
  --fg-muted: #8a8f98;
  --fg-faint: #595e68;
  --accent: #00e5c0;
  --accent-400: #2df0d2;
  --line: rgba(255, 255, 255, 0.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ink-950);
  color: var(--fg);
  font: 17px/1.7 Inter, ui-sans-serif, system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-400); }

.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1230px; margin: 0 auto; padding: 16px 24px;
  background: rgba(8, 9, 10, 0.8); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-weight: 600; letter-spacing: -0.01em; }
.brand b { color: var(--accent); font-weight: 600; }
.brand .diamond { width: 18px; height: 18px; background: var(--accent); border-radius: 4px; transform: rotate(45deg); }
.cta {
  border: 1px solid var(--line); background: rgba(255, 255, 255, 0.03);
  color: var(--fg); padding: 8px 14px; border-radius: 8px; font-size: 14px; font-weight: 500;
}
.cta:hover { border-color: rgba(0, 229, 192, 0.4); color: var(--accent-400); }

.wrap { max-width: 1230px; margin: 0 auto; padding: 40px 24px 0; }
.crumbs { font-size: 13px; color: var(--fg-faint); margin-bottom: 28px; }
.crumbs a { color: var(--fg-muted); }
.crumbs .cur { color: var(--fg-faint); }
.crumbs span { margin: 0 6px; color: var(--fg-faint); }

article h1 { font-size: 40px; line-height: 1.12; letter-spacing: -0.02em; color: #fff; margin: 0 0 14px; }
.byline { color: var(--fg-faint); font-size: 14px; font-family: "JetBrains Mono", ui-monospace, monospace; margin: 0 0 36px; }
article h2 { font-size: 26px; letter-spacing: -0.01em; color: #fff; margin: 44px 0 14px; }
article h3 { font-size: 19px; color: #fff; margin: 28px 0 10px; }
article p { color: #d3d6db; margin: 0 0 18px; text-align: justify; hyphens: auto; -webkit-hyphens: auto; }
article ul, article ol { color: #d3d6db; padding-left: 22px; margin: 0 0 18px; }
article li { margin: 7px 0; }
article strong { color: #fff; }
article code {
  font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 0.88em;
  background: var(--ink-850); border: 1px solid var(--line); border-radius: 5px; padding: 1px 6px; color: var(--accent-400);
}
article section { border-top: 1px solid transparent; }

.diagram {
  max-width: 680px;
  margin: 36px auto;
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 22px 18px;
}
.diagram svg { width: 100%; height: auto; display: block; }
.diagram figcaption {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--fg-faint);
  font-family: "JetBrains Mono", ui-monospace, monospace;
}

.faq { margin-top: 48px; border-top: 1px solid var(--line); padding-top: 8px; }
.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq summary { cursor: pointer; color: #fff; font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "+ "; color: var(--accent); }
.faq details[open] summary::before { content: "− "; }
.faq details > div { color: #d3d6db; margin-top: 12px; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 40px 0 0; }
.tags span {
  font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 12px; color: var(--fg-muted);
  border: 1px solid var(--line); border-radius: 6px; padding: 4px 10px;
}

.refs { margin-top: 44px; border-top: 1px solid var(--line); padding-top: 22px; }
.refs h2 { font-size: 18px; color: #fff; margin: 0 0 12px; }
.refs ul { padding-left: 20px; margin: 0; }
.refs li { margin: 8px 0; }
.refs li a { color: var(--fg-muted); }
.refs li a:hover { color: var(--accent-400); }
.author { margin-top: 32px; padding: 20px 22px; background: var(--ink-900); border: 1px solid var(--line); border-radius: 14px; }
.author-name { color: #fff; font-weight: 600; font-size: 15px; }
.author-name span { color: var(--fg-muted); font-weight: 400; }
.author p { color: var(--fg-muted); font-size: 14px; line-height: 1.6; margin: 8px 0 0; }

/* /blog/ index */
.blog-head h1 { font-size: 40px; line-height: 1.12; letter-spacing: -0.02em; color: #fff; margin: 0; }
.blog-head p { color: var(--fg-muted); font-size: 18px; margin: 12px 0 0; }
.post-list { list-style: none; padding: 0; margin: 28px 0 0; }
.post { border-top: 1px solid var(--line); }
.post-link { display: block; padding: 26px 0; }
.post-link h2 { font-size: 23px; color: #fff; margin: 0 0 8px; letter-spacing: -0.01em; }
.post-link:hover h2 { color: var(--accent-400); }
.post-link p { color: var(--fg-muted); font-size: 15px; line-height: 1.6; margin: 0 0 10px; }
.post-meta { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 12px; color: var(--fg-faint); }

/* service landing pages */
.lp-inner { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.lp-narrow { max-width: 760px; }
.lp-section { padding: 64px 0; border-top: 1px solid var(--line); }
.lp-section.lp-alt { background: var(--ink-925); }
.lp-section h2 { font-size: 30px; letter-spacing: -0.01em; color: #fff; margin: 0 0 28px; }
.lp-hero { padding: 80px 0 56px; }
.lp-eyebrow { display: inline-flex; align-items: center; gap: 10px; font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.22em; color: var(--accent); }
.lp-eyebrow span { width: 28px; height: 1px; background: var(--accent); opacity: 0.7; }
.lp-hero h1 { font-size: 52px; line-height: 1.06; letter-spacing: -0.03em; color: #fff; margin: 18px 0 0; max-width: 18ch; }
.lp-sub { color: var(--fg-muted); font-size: 19px; line-height: 1.6; max-width: 62ch; margin: 22px 0 0; }
.lp-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.lp-btn-primary { background: var(--accent); color: var(--ink-950); font-weight: 600; padding: 13px 26px; border-radius: 9px; font-size: 14px; }
.lp-btn-primary:hover { background: var(--accent-400); color: var(--ink-950); }
.lp-btn-ghost { border: 1px solid var(--line); background: rgba(255,255,255,0.03); color: var(--fg); padding: 13px 26px; border-radius: 9px; font-size: 14px; }
.lp-btn-ghost:hover { border-color: rgba(255,255,255,0.2); }
.lp-grid, .lp-steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.lp-card { background: rgba(255,255,255,0.02); border: 1px solid var(--line); border-radius: 14px; padding: 24px; }
.lp-card h3 { font-size: 18px; color: #fff; margin: 0 0 10px; }
.lp-card p, .lp-step p { color: var(--fg-muted); font-size: 15px; line-height: 1.6; margin: 0; }
.lp-step { background: var(--ink-900); border: 1px solid var(--line); border-radius: 14px; padding: 24px; }
.lp-step-n { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 13px; color: var(--accent); margin-bottom: 12px; }
.lp-step h3 { font-size: 17px; color: #fff; margin: 0 0 8px; }
.lp-chips { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.lp-chip { margin: 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--ink-925); }
.lp-chip-img { aspect-ratio: 4 / 3; overflow: hidden; }
.lp-chip-img img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1); opacity: 0.8; transition: all .4s; }
.lp-chip:hover .lp-chip-img img { filter: grayscale(0); opacity: 1; }
.lp-chip figcaption { padding: 10px 12px; }
.lp-chip figcaption span { display: block; color: var(--fg); font-size: 13px; font-weight: 500; }
.lp-chip figcaption em { display: block; font-style: normal; font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 11px; color: var(--fg-faint); margin-top: 2px; }
.lp-lead { color: var(--fg-muted); font-size: 16px; line-height: 1.6; margin: 0 0 24px; max-width: 62ch; }
.lp-form label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fg-muted); margin-bottom: 8px; }
.lp-form input, .lp-form textarea { width: 100%; box-sizing: border-box; border: 1px solid var(--line); background: rgba(255,255,255,0.03); border-radius: 9px; padding: 12px 16px; color: var(--fg); font-size: 14px; font-family: inherit; margin-bottom: 16px; }
.lp-form input:focus, .lp-form textarea:focus { outline: none; border-color: rgba(0,229,192,0.5); }
.lp-form textarea { resize: vertical; }
.lp-form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.lp-form button { width: 100%; background: var(--accent); color: var(--ink-950); font-weight: 600; border: none; padding: 14px; border-radius: 9px; font-size: 14px; cursor: pointer; }
.lp-form button:hover { background: var(--accent-400); }
.lp-form button:disabled { opacity: 0.6; }
.hidden-cb { display: none; }
.form-ok { border: 1px solid rgba(0,229,192,0.3); background: rgba(0,229,192,0.06); border-radius: 14px; padding: 28px; text-align: center; color: #fff; font-size: 16px; }
.lp-section .diagram { margin-left: auto; margin-right: auto; }
@media (max-width: 720px) {
  .lp-hero h1 { font-size: 36px; }
  .lp-grid, .lp-steps, .lp-form-row { grid-template-columns: 1fr; }
  .lp-chips { grid-template-columns: repeat(2, 1fr); }
}

.related { max-width: 1230px; margin: 56px auto 0; padding: 28px 24px 0; border-top: 1px solid var(--line); }
.related h2 { font-size: 18px; color: #fff; margin: 0 0 14px; }
.related ul { list-style: none; padding: 0; margin: 0 0 28px; }
.related li { margin: 10px 0; }
.related li a { color: var(--fg); }
.related li a:hover { color: var(--accent-400); }
.convert {
  background: var(--ink-900); border: 1px solid var(--line); border-radius: 16px; padding: 24px;
}
.convert p { color: var(--fg-muted); margin: 0 0 16px; }
.convert .cta { display: inline-block; background: var(--accent); color: var(--ink-950); border: none; font-weight: 600; }
.convert .cta:hover { background: var(--accent-400); color: var(--ink-950); }

.foot {
  max-width: 1230px; margin: 64px auto 0; padding: 28px 24px 48px;
  border-top: 1px solid var(--line); color: var(--fg-faint); font-size: 13px;
}
.foot a { color: var(--fg-muted); }

@media (max-width: 600px) {
  article h1 { font-size: 31px; }
  article h2 { font-size: 22px; }
}