/* ==== data.addlivetag.com — shared styles ==== */
:root {
  --brand: #ee4d2d;
  --brand-dark: #d73f21;
  --ink: #1f2430;
  --ink-soft: #5b6472;
  --line: #e6e9ee;
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --code-bg: #22272e;
  --code-ink: #d7dde5;
  --ok: #1a9c5b;
  --warn: #b7791f;
  --radius: 12px;
  --maxw: 1080px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
}
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---- topbar ---- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.9); backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .2s ease, background .2s ease;
}
.topbar.scrolled { background: rgba(255,255,255,.97); box-shadow: 0 2px 18px rgba(31,36,48,.09); }
.topbar .container { display: flex; align-items: center; gap: 18px; height: 60px; }

.logo { display: inline-flex; align-items: center; gap: 9px; font-weight: 700; font-size: 17px; color: var(--ink); text-decoration: none; white-space: nowrap; }
.logo b { color: var(--brand); }
.logo-mark {
  display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), #ff7a4d); font-size: 15px; line-height: 1;
  box-shadow: 0 2px 8px rgba(238,77,45,.35);
}

/* ---- nav ---- */
.nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav > a, .nav-drop-toggle {
  display: inline-flex; align-items: center; gap: 5px;
  color: var(--ink-soft); text-decoration: none; font-size: 14.5px; font-weight: 500;
  padding: 8px 13px; border-radius: 9px; white-space: nowrap; line-height: 1.4;
  background: none; border: 0; cursor: pointer; font-family: inherit;
  transition: color .15s, background .15s;
}
.nav > a:hover, .nav-drop-toggle:hover { background: var(--bg-soft); color: var(--ink); }
.nav > a.active, .nav-drop-toggle.active { color: var(--brand); background: #fdeeea; }
.nav .caret { width: 11px; height: 11px; opacity: .7; transition: transform .18s ease; }

/* dropdown */
.nav-dropdown { position: relative; }
.nav-drop-menu {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 244px;
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 6px;
  box-shadow: 0 14px 36px rgba(31,36,48,.15);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .16s ease, transform .16s ease, visibility .16s ease; z-index: 60;
}
.nav-drop-menu a {
  display: flex; align-items: center; gap: 9px; padding: 9px 12px; border-radius: 8px;
  text-decoration: none; color: var(--ink-soft); font-size: 14.5px; font-weight: 500; white-space: nowrap;
}
.nav-drop-menu a:hover { background: var(--bg-soft); color: var(--ink); }
.nav-drop-menu a.active { color: var(--brand); background: #fdeeea; }
.nav-drop-menu .emoji { font-size: 16px; line-height: 1; }
.nav-dropdown.open .nav-drop-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-dropdown.open .caret { transform: rotate(180deg); }
@media (min-width: 901px) {
  .nav-dropdown:hover .nav-drop-menu { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav-dropdown:hover .caret { transform: rotate(180deg); }
  /* cầu nối trong suốt lấp khoảng hở 8px để hover không bị ngắt khi rê xuống menu */
  .nav-dropdown::after { content: ""; position: absolute; top: 100%; left: 0; width: 100%; height: 12px; }
}

/* hamburger */
.nav-toggle {
  display: none; margin-left: auto; width: 42px; height: 42px; border: 0; background: none;
  cursor: pointer; border-radius: 9px; position: relative;
}
.nav-toggle:hover { background: var(--bg-soft); }
.nav-toggle span {
  position: absolute; left: 11px; right: 11px; height: 2px; border-radius: 2px; background: var(--ink);
  transition: transform .2s ease, opacity .2s ease, top .2s ease;
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 20px; }
.nav-toggle span:nth-child(3) { top: 26px; }
.nav-toggle.is-active span:nth-child(1) { top: 20px; transform: rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { top: 20px; transform: rotate(-45deg); }

/* mobile drawer */
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed; top: 60px; right: 0; width: min(88vw, 360px);
    height: calc(100vh - 60px); height: calc(100dvh - 60px);
    flex-direction: column; align-items: stretch; gap: 2px; margin: 0;
    background: #fff; padding: 14px 16px 28px; border-left: 1px solid var(--line);
    overflow-y: auto; transform: translateX(100%); transition: transform .25s ease;
    box-shadow: -10px 0 30px rgba(0,0,0,.08);
  }
  .nav.open { transform: translateX(0); }
  .nav > a, .nav-drop-toggle { width: 100%; font-size: 16px; padding: 13px 14px; border-radius: 10px; }
  .nav-drop-toggle { justify-content: space-between; }
  .nav-dropdown { width: 100%; }
  .nav-drop-menu {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: 0; border-radius: 0; min-width: 0; padding: 2px 0 4px 10px;
    max-height: 0; overflow: hidden; transition: max-height .25s ease;
  }
  .nav-dropdown.open .nav-drop-menu { max-height: 360px; }
  .nav-drop-menu a { padding: 12px 14px; font-size: 15px; }
}
.nav-backdrop {
  position: fixed; inset: 60px 0 0; background: rgba(15,18,26,.35);
  opacity: 0; visibility: hidden; transition: opacity .25s ease, visibility .25s ease; z-index: 40;
}
@media (max-width: 900px) { .nav-backdrop.show { opacity: 1; visibility: visible; } }

/* ---- hero ---- */
.hero { background: linear-gradient(180deg, #fff7f5 0%, #ffffff 100%); border-bottom: 1px solid var(--line); }
.hero .container { padding: 56px 20px 48px; text-align: center; }
.hero h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.2; letter-spacing: -0.5px; }
.hero h1 span { color: var(--brand); }
.hero p.sub { max-width: 720px; margin: 14px auto 0; color: var(--ink-soft); font-size: 18px; }
.hero .cta { margin-top: 26px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 600; font-size: 15px;
  padding: 11px 22px; border-radius: 10px; transition: all .15s;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { border: 1px solid var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.badge-embed { margin-top: 28px; }
.hero .free-note { margin-top: 14px; font-size: 13.5px; color: var(--ink-soft); }

/* ---- sections ---- */
section.block { padding: 52px 0; }
section.block.alt { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2.sec-title { font-size: 26px; text-align: center; margin-bottom: 8px; letter-spacing: -0.3px; }
p.sec-sub { text-align: center; color: var(--ink-soft); max-width: 640px; margin: 0 auto 34px; }

/* ---- cards ---- */
.grid { display: grid; gap: 18px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px) { .grid.cols-3, .grid.cols-4, .grid.cols-2 { grid-template-columns: 1fr; } }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px;
}
.card h3 { font-size: 17px; margin-bottom: 8px; }
.card p { color: var(--ink-soft); font-size: 14.5px; }
.card .icon { font-size: 26px; margin-bottom: 12px; display: block; }
a.card { display: block; text-decoration: none; color: inherit; transition: all .15s; }
a.card:hover { border-color: var(--brand); box-shadow: 0 6px 20px rgba(238,77,45,.08); transform: translateY(-2px); }
.card .go { color: var(--brand); font-size: 14px; font-weight: 600; margin-top: 10px; display: inline-block; }
.card .soon { display: inline-block; font-size: 12px; font-weight: 600; color: var(--warn); background: #fdf3e3; padding: 2px 10px; border-radius: 20px; margin-left: 8px; vertical-align: 2px; }

/* ---- docs ---- */
.doc { max-width: 1080px; margin: 0 auto; }
.doc h2 { font-size: 24px; margin: 42px 0 12px; letter-spacing: -0.3px; }
.doc h3 { font-size: 18px; margin: 30px 0 10px; }
.doc p { margin: 10px 0; color: #333a46; }
.doc ul { margin: 10px 0 10px 24px; color: #333a46; }
.doc li { margin: 4px 0; }
.endpoint {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 16px; margin: 14px 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px;
}
.method { font-weight: 700; font-size: 12.5px; padding: 3px 10px; border-radius: 6px; color: #fff; background: var(--ok); }
.method.post { background: #2563eb; }
pre {
  background: var(--code-bg); color: var(--code-ink); border-radius: 10px;
  padding: 16px 18px; overflow-x: auto; font-size: 13.5px; line-height: 1.55; margin: 14px 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
code.inline {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 6px;
  padding: 1px 7px; font-size: 13.5px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
table.params { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14.5px; }
table.params th, table.params td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.params th { background: var(--bg-soft); font-size: 13px; text-transform: uppercase; letter-spacing: .4px; color: var(--ink-soft); }
table.params td:first-child { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13.5px; white-space: nowrap; }
.req { color: var(--brand); font-weight: 600; font-size: 12px; }
.opt { color: var(--ink-soft); font-size: 12px; }
.note {
  border-left: 4px solid var(--brand); background: #fff7f5;
  padding: 12px 16px; border-radius: 0 10px 10px 0; margin: 16px 0; font-size: 14.5px;
}
.note.info { border-color: #2563eb; background: #f0f6ff; }

/* ---- steps ---- */
.steps { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 10px; }
.step { display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--line); border-radius: 30px; padding: 8px 18px 8px 8px; font-size: 14.5px; font-weight: 500; }
.step .n { width: 28px; height: 28px; border-radius: 50%; background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; }

/* ---- LLM copy box ---- */
.llm-box {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  background: #f0f6ff; border: 1px solid #c7dcff; border-radius: var(--radius);
  padding: 16px 20px; margin: 18px 0;
}
.llm-box .llm-info { flex: 1; min-width: 240px; }
.llm-box .llm-info b { font-size: 15.5px; }
.llm-box .llm-info p { margin: 4px 0 0; color: var(--ink-soft); font-size: 14px; }
button.llm-copy-btn { cursor: pointer; border: none; font-family: inherit; white-space: nowrap; }
button.llm-copy-btn.ok { background: var(--ok); }

/* ---- footer ---- */
footer { border-top: 1px solid var(--line); padding: 34px 0; margin-top: 30px; }
footer .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; color: var(--ink-soft); font-size: 14px; }
footer .footer-made { flex-basis: 100%; margin-top: 8px; }
footer a { color: var(--brand); text-decoration: none; }
footer a:hover { text-decoration: underline; }