/* ==========================================================================
   Error Hunter — marketing landing page
   msnugget brand: pure black bg, green #39A751 accent, ultra-bold white
   headings, grey body text, Manrope, rounded green pill CTAs, dark cards.
   Design tokens are duplicated here so the landing page is self-contained.
   ========================================================================== */

@font-face {
  font-family: "Manrope";
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
  src: url("../assets/fonts/manrope.woff2") format("woff2");
}

:root,
:root[data-theme="dark"] {
  --bg: #000000; --bg-elev: #0c120b; --bg-grid: #050705;
  --fg: #d2d7dc; --fg-dim: #9aa1a8; --fg-faint: rgba(255,255,255,0.42);
  --border: rgba(255,255,255,0.10); --border-strong: rgba(255,255,255,0.18);
  --accent: #39a751; --accent-fg: #ffffff;
  --accent-soft: rgba(57,167,81,0.16); --accent-border: rgba(57,167,81,0.55);
  --err: #ff6b6b; --warn: #e3a84b; --ok: #39a751; --info: #7aa2c4;
  --row-sel-bg: rgba(57,167,81,0.18); --row-err-bg: rgba(255,90,90,0.13);
  --hover-bg: rgba(255,255,255,0.06); --active-bg: rgba(255,255,255,0.10);
  --shadow: rgba(0,0,0,0.6); --heading: #ffffff;
  --font-ui: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, "Cascadia Code",
    Menlo, Consolas, "DejaVu Sans Mono", monospace;
}
:root[data-theme="light"] {
  --bg: #ffffff; --bg-elev: #f5f7f5; --bg-grid: #ffffff;
  --fg: #1d2421; --fg-dim: #5b665f; --fg-faint: #8a948c;
  --border: #e2e8e3; --border-strong: #cdd6cf;
  --accent: #1f8f3d; --accent-fg: #ffffff;
  --accent-soft: rgba(31,143,61,0.12); --accent-border: rgba(31,143,61,0.45);
  --err: #d64545; --warn: #b9791f; --ok: #1f8f3d; --info: #3b6ea5;
  --row-sel-bg: rgba(31,143,61,0.14); --row-err-bg: rgba(214,69,69,0.10);
  --hover-bg: rgba(0,0,0,0.05); --active-bg: rgba(0,0,0,0.08);
  --shadow: rgba(16,24,40,0.16); --heading: #0c130f;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: clamp(1rem, 0.97rem + 0.15vw, 1.0625rem);
  line-height: 1.65;
  color: var(--fg);
  background-color: var(--bg);
  background-image:
    radial-gradient(900px 520px at 50% -8%, var(--accent-soft), transparent 70%),
    repeating-linear-gradient(135deg,
      rgba(57,167,81,0.035) 0px, rgba(57,167,81,0.035) 1px,
      transparent 1px, transparent 11px);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
:root[data-theme="light"] body {
  background-image:
    radial-gradient(900px 520px at 50% -8%, var(--accent-soft), transparent 70%),
    repeating-linear-gradient(135deg,
      rgba(31,143,61,0.04) 0px, rgba(31,143,61,0.04) 1px,
      transparent 1px, transparent 11px);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { color: var(--heading); font-weight: 800; letter-spacing: -0.02em; line-height: 1.08; margin: 0 0 0.5em; }
p { margin: 0 0 1em; }

a:focus-visible, button:focus-visible, .btn:focus-visible, summary:focus-visible, input:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--accent); color: var(--accent-fg);
  padding: 0.6rem 1rem; border-radius: 0 0 10px 0; font-weight: 700;
}
.skip-link:focus { left: 0; }

.wrap { width: 100%; max-width: 1160px; margin-inline: auto; padding-inline: clamp(1.1rem, 4vw, 2rem); }
section { padding-block: clamp(3.5rem, 7vw, 6rem); }
.section-head { max-width: 720px; margin: 0 auto clamp(2rem, 4vw, 3rem); text-align: center; }
.section-head h2 { font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.65rem); }
.eyebrow { display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.7rem; }
.lead { color: var(--fg-dim); font-size: clamp(1.02rem, 0.98rem + 0.3vw, 1.18rem); }
code { font-family: var(--font-mono); font-size: 0.9em; padding: 1px 6px; border-radius: 6px; background: var(--hover-bg); color: var(--fg); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font-family: inherit; font-size: 1rem; font-weight: 700; line-height: 1;
  padding: 0.85rem 1.5rem; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; white-space: nowrap;
  transition: filter 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}
.btn-primary { background: var(--accent); color: var(--accent-fg); border: none; }
.btn-primary:hover { filter: brightness(1.08); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--heading); border: 1px solid var(--border-strong); }
.btn-ghost:hover { background: var(--hover-bg); border-color: var(--accent-border); text-decoration: none; }
.btn-sm { padding: 0.55rem 1.05rem; font-size: 0.92rem; }

/* ---- Header ---- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(140%) blur(12px); -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; font-weight: 800; font-size: 1.2rem; letter-spacing: -0.02em; color: var(--heading); }
.brand:hover { text-decoration: none; }
.brand-glyph { width: 30px; height: 30px; flex: 0 0 auto; border-radius: 9px; display: block; }
.brand-name { color: var(--heading); }
.brand-dev { color: var(--accent); }
.site-nav { display: flex; align-items: center; gap: clamp(0.6rem, 2vw, 1.6rem); }
.nav-links { display: flex; align-items: center; gap: clamp(0.8rem, 2vw, 1.6rem); list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--fg-dim); font-weight: 600; font-size: 0.95rem; }
.nav-links a:hover { color: var(--heading); text-decoration: none; }

.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 999px; background: transparent;
  border: 1px solid var(--border-strong); color: var(--fg-dim); cursor: pointer; padding: 0;
}
.theme-toggle:hover { color: var(--heading); border-color: var(--accent-border); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
.theme-toggle .icon-sun { display: block; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: none; }

.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--border-strong); background: transparent; border-radius: 10px; color: var(--heading); cursor: pointer; padding: 0; }
.nav-toggle svg { width: 22px; height: 22px; margin: auto; }
@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links {
    position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch;
    gap: 0; background: var(--bg-elev); border-bottom: 1px solid var(--border);
    padding: 0.5rem clamp(1.1rem, 4vw, 2rem) 1rem; box-shadow: 0 18px 30px var(--shadow); display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a, .nav-links .btn { display: block; width: 100%; padding-block: 0.85rem; }
  .nav-links .btn { text-align: center; margin-top: 0.4rem; }
}

/* ---- Hero ---- */
.hero { text-align: center; padding-top: clamp(3rem, 6vw, 5rem); padding-bottom: clamp(2.5rem, 5vw, 4rem); }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.4rem 0.9rem; border-radius: 999px;
  background: var(--accent-soft); border: 1px solid var(--accent-border); color: var(--accent);
  font-size: 0.82rem; font-weight: 700; letter-spacing: 0.02em; margin-bottom: 1.6rem;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.hero h1 { font-size: clamp(2.5rem, 1.4rem + 5vw, 4.3rem); font-weight: 800; letter-spacing: -0.035em; max-width: 18ch; margin-inline: auto; }
.hero h1 .accent { color: var(--accent); }
.hero-sub { max-width: 640px; margin: 1.2rem auto 0; color: var(--fg-dim); font-size: clamp(1.05rem, 1rem + 0.5vw, 1.3rem); }

/* Hero search box (posts to app.html?code=) */
.hero-search { margin: 2rem auto 0; max-width: 600px; display: flex; gap: 0.6rem; }
.hero-search-wrap { position: relative; flex: 1 1 auto; display: flex; align-items: center; }
.hero-search-wrap svg { position: absolute; left: 16px; width: 20px; height: 20px; color: var(--fg-faint); pointer-events: none; }
.hero-search input {
  width: 100%; font-family: var(--font-mono); font-size: 1.02rem; color: var(--fg);
  background: var(--bg-elev); border: 1px solid var(--border-strong); border-radius: 14px;
  padding: 0.95rem 1rem 0.95rem 2.9rem;
}
.hero-search input::placeholder { color: var(--fg-faint); font-family: var(--font-ui); }
.hero-search input:focus { outline: none; border-color: var(--accent-border); box-shadow: 0 0 0 4px var(--accent-soft); }

.trust-line { margin-top: 1.4rem; display: inline-flex; align-items: center; gap: 0.5rem; color: var(--fg-dim); font-size: 0.92rem; }
.trust-line svg { width: 18px; height: 18px; color: var(--accent); flex: 0 0 auto; }
.hero-examples { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0.5rem; margin-top: 1.3rem; }
.hero-examples .label { color: var(--fg-dim); font-size: 0.85rem; font-weight: 600; }
.hero-examples a {
  font-family: var(--font-mono); font-size: 0.84rem; font-weight: 600; color: var(--fg);
  background: var(--bg-elev); border: 1px solid var(--border-strong); border-radius: 999px; padding: 0.34rem 0.8rem;
}
.hero-examples a:hover { border-color: var(--accent-border); color: var(--heading); text-decoration: none; }

/* ---- Stats ---- */
.stats { padding-block: clamp(2rem, 4vw, 3rem); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; text-align: center; }
.stat .num { display: block; font-size: clamp(1.6rem, 1.1rem + 1.8vw, 2.4rem); font-weight: 800; color: var(--heading); letter-spacing: -0.02em; line-height: 1.1; }
.stat .num .accent { color: var(--accent); }
.stat .label { display: block; color: var(--fg-dim); font-size: 0.86rem; margin-top: 0.25rem; }
@media (max-width: 640px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.6rem 1rem; } }

/* ---- Cards / features ---- */
.card {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; position: relative;
  background-image: linear-gradient(180deg, var(--accent-soft) 0%, transparent 38%);
  transition: border-color 0.18s ease, transform 0.18s ease, background-color 0.18s ease;
}
.card:hover { border-color: var(--accent-border); transform: translateY(-3px); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.1rem; }
@media (max-width: 1024px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .feature-grid { grid-template-columns: 1fr; } }
.icon-tile {
  width: 44px; height: 44px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent-soft); border: 1px solid var(--accent-border); color: var(--accent); margin-bottom: 1rem;
}
.icon-tile svg { width: 22px; height: 22px; }
.feature h3 { font-size: 1.12rem; margin-bottom: 0.35rem; }
.feature p { color: var(--fg-dim); font-size: 0.95rem; margin: 0; }

/* ---- Categories strip ---- */
.cats { background: radial-gradient(700px 360px at 80% 0%, var(--accent-soft), transparent 70%), var(--bg-grid); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.cat-grid { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; max-width: 820px; margin: 0 auto; }
.cat-tag {
  font-size: 0.92rem; font-weight: 600; color: var(--fg); background: var(--bg-elev);
  border: 1px solid var(--border-strong); border-radius: 999px; padding: 0.5rem 1rem;
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.cat-tag .n { color: var(--accent); font-weight: 800; }

/* ---- Sample result preview (mono card) ---- */
.preview { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center; }
@media (max-width: 880px) { .preview { grid-template-columns: 1fr; } }
.preview-copy h2 { font-size: clamp(1.7rem, 1.2rem + 2vw, 2.5rem); text-align: left; }
.preview-copy .lead { text-align: left; }
.feature-list { list-style: none; margin: 1.4rem 0 0; padding: 0; display: grid; gap: 0.7rem; }
.feature-list li { display: flex; align-items: flex-start; gap: 0.7rem; color: var(--fg); }
.feature-list svg { width: 20px; height: 20px; color: var(--accent); flex: 0 0 auto; margin-top: 2px; }
.result-mock { border-radius: 16px; border: 1px solid var(--border-strong); background: var(--bg-elev); overflow: hidden; box-shadow: 0 30px 60px -30px var(--shadow); }
.result-mock .bar { display: flex; align-items: center; gap: 0.6rem; padding: 0.65rem 0.95rem; background: var(--bg); border-bottom: 1px solid var(--border); font-size: 0.82rem; color: var(--fg-dim); font-weight: 600; }
.result-mock .bar .dots { display: inline-flex; gap: 0.4rem; }
.result-mock .bar .dots i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.result-mock .bar .dots i:nth-child(1) { background: var(--err); }
.result-mock .bar .dots i:nth-child(2) { background: var(--warn); }
.result-mock .bar .dots i:nth-child(3) { background: var(--ok); }
.result-mock .body { padding: 1.2rem; }
.result-mock .mock-code { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 700; color: var(--heading); }
.result-mock .mock-chip { display: inline-block; font-size: 0.72rem; font-weight: 700; padding: 0.22rem 0.6rem; border-radius: 999px; color: #6cc8ff; background: rgba(108,200,255,0.13); border: 1px solid rgba(108,200,255,0.4); margin-left: 0.5rem; vertical-align: middle; }
.result-mock h4 { margin: 0.8rem 0 0.3rem; color: var(--heading); font-size: 1.05rem; }
.result-mock .label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); font-weight: 700; margin-top: 0.8rem; }
.result-mock p { color: var(--fg-dim); font-size: 0.9rem; margin: 0.2rem 0 0; }
.result-mock .mock-cta { display: inline-flex; margin-top: 1rem; font-weight: 700; color: var(--accent); font-size: 0.9rem; }

/* ---- FAQ ---- */
.faq-list { max-width: 820px; margin-inline: auto; display: grid; gap: 0.8rem; }
.faq-item { border: 1px solid var(--border); border-radius: 14px; background: var(--bg-elev); overflow: hidden; }
.faq-item[open] { border-color: var(--accent-border); }
.faq-item summary { list-style: none; cursor: pointer; padding: 1.1rem 1.3rem; font-weight: 700; color: var(--heading); font-size: 1.05rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .chevron { flex: 0 0 auto; width: 20px; height: 20px; color: var(--accent); transition: transform 0.2s ease; }
.faq-item[open] summary .chevron { transform: rotate(180deg); }
.faq-item .faq-answer { padding: 0 1.3rem 1.2rem; color: var(--fg-dim); margin: 0; }

/* ---- Final CTA ---- */
.cta-final { text-align: center; }
.cta-card { position: relative; border-radius: 22px; border: 1px solid var(--accent-border); background: radial-gradient(600px 300px at 50% 0%, var(--accent-soft), transparent 70%), var(--bg-elev); padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 5vw, 4rem); overflow: hidden; }
.cta-card h2 { font-size: clamp(1.8rem, 1.2rem + 2.6vw, 2.8rem); max-width: 18ch; margin-inline: auto; }
.cta-card .lead { max-width: 560px; margin-inline: auto; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.9rem; justify-content: center; margin-top: 1.8rem; }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--border); padding-block: clamp(2.5rem, 5vw, 3.5rem); color: var(--fg-dim); font-size: 0.92rem; }
.footer-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.2rem; padding-bottom: 1.6rem; border-bottom: 1px solid var(--border); }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.2rem; list-style: none; margin: 0; padding: 0; }
.footer-links a { color: var(--fg-dim); font-weight: 600; }
.footer-links a:hover { color: var(--heading); text-decoration: none; }
.footer-bottom { padding-top: 1.4rem; display: flex; flex-wrap: wrap; gap: 0.6rem 1.4rem; align-items: center; justify-content: space-between; }
.disclaimer { max-width: 72ch; color: var(--fg-faint); font-size: 0.86rem; margin: 0; }

@media (max-width: 540px) { .hero-search { flex-direction: column; } .hero-search .btn { width: 100%; } }