/* ==========================================================================
   Stud Finder — Metal Detector | Marketing site
   Brand: near-black background, amber/orange accents, green→red signal ramp
   ========================================================================== */

:root {
  --bg: #070707;
  --bg-2: #0e0e10;
  --bg-3: #16161a;
  --card: #141417;
  --card-2: #1b1b20;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);

  --text: #f5f5f7;
  --muted: #a1a1aa;
  --muted-2: #71717a;

  --amber: #ffb300;
  --amber-2: #ff8a00;
  --amber-soft: rgba(255, 160, 0, 0.14);

  --green: #22c55e;
  --yellow: #ffd400;
  --orange: #ff8a00;
  --red: #e5484d;

  --grad-amber: linear-gradient(135deg, #ffc107 0%, #ff8a00 100%);
  --grad-signal: linear-gradient(180deg, #e5484d, #ff8a00 35%, #ffd400 60%, #22c55e 100%);

  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  --shadow-amber: 0 16px 44px rgba(255, 138, 0, 0.28);

  --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 .5em; font-weight: 800; }
h1 { font-size: clamp(2.3rem, 6vw, 4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.7rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1rem; color: var(--muted); }

.amber { color: var(--amber); }
.grad-text {
  background: var(--grad-amber);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1rem;
  padding: 15px 26px; border-radius: 999px;
  cursor: pointer; border: 1px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-amber); color: #1a1200;
  box-shadow: var(--shadow-amber);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 20px 52px rgba(255,138,0,.42); }
.btn-ghost {
  background: rgba(255,255,255,.04); color: var(--text);
  border-color: var(--line-2);
}
.btn-ghost:hover { background: rgba(255,255,255,.09); transform: translateY(-2px); }
.btn svg { width: 20px; height: 20px; }

/* Official-style App Store badge */
.appstore-badge {
  display: inline-flex; align-items: center; gap: 12px;
  background: #000; border: 1px solid var(--line-2);
  border-radius: 14px; padding: 10px 20px; color: #fff;
  transition: transform .15s ease, border-color .15s ease;
}
.appstore-badge:hover { transform: translateY(-2px); border-color: var(--amber); }
.appstore-badge svg { width: 26px; height: 26px; }
.appstore-badge .small { font-size: .68rem; color: #c9c9cf; line-height: 1; margin-bottom: 3px; }
.appstore-badge .big { font-size: 1.25rem; font-weight: 700; line-height: 1; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(160%) blur(14px);
  background: rgba(7,7,7,.72);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; letter-spacing: -.02em; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.brand span b { color: var(--amber); }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { color: var(--muted); font-size: .95rem; font-weight: 600; transition: color .15s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { padding: 9px 18px; font-size: .9rem; }
@media (max-width: 820px) { .nav-links a:not(.nav-cta) { display: none; } }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 74px 0 40px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(680px 420px at 78% 12%, rgba(255,138,0,.20), transparent 60%),
    radial-gradient(560px 420px at 12% 8%, rgba(255,179,0,.10), transparent 60%);
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .82rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  color: var(--amber); background: var(--amber-soft);
  border: 1px solid rgba(255,160,0,.28); padding: 7px 14px; border-radius: 999px;
  margin-bottom: 22px;
}
.hero p.lead { font-size: 1.18rem; color: #d4d4d8; max-width: 33ch; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin: 26px 0 18px; }
.hero-trust { display: flex; align-items: center; gap: 18px; color: var(--muted-2); font-size: .88rem; flex-wrap: wrap; }
.hero-trust .stars { color: var(--amber); letter-spacing: 2px; }
.hero-trust b { color: var(--text); }

.phone-shot {
  position: relative; margin: 0 auto; max-width: 320px;
  filter: drop-shadow(0 40px 70px rgba(0,0,0,.7));
}
.phone-shot img { border-radius: 34px; border: 1px solid var(--line); }
.phone-glow {
  position: absolute; inset: -40px -40px 0; z-index: -1;
  background: radial-gradient(closest-side, rgba(255,138,0,.28), transparent 72%);
  filter: blur(8px);
}
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero p.lead { max-width: none; margin-inline: auto; }
  .hero-cta, .hero-trust { justify-content: center; }
  .eyebrow { margin-inline: auto; }
}

/* ---------- Logo strip / stats ---------- */
.stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; padding: 30px 0; text-align: center; }
.stats .num { font-size: 1.9rem; font-weight: 800; }
.stats .lbl { color: var(--muted-2); font-size: .85rem; }
@media (max-width: 620px){ .stats-grid { grid-template-columns: repeat(2,1fr); } }

/* ---------- Sections ---------- */
section { padding: 78px 0; }
.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head .eyebrow { margin-bottom: 16px; }
.section-head p { font-size: 1.08rem; }

/* ---------- Features ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.feature {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; transition: transform .18s ease, border-color .18s ease;
}
.feature:hover { transform: translateY(-4px); border-color: var(--line-2); }
.feature .ico {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  background: var(--amber-soft); color: var(--amber); margin-bottom: 16px;
}
.feature .ico svg { width: 26px; height: 26px; }
.feature h3 { margin-bottom: 8px; }
.feature p { margin: 0; font-size: .96rem; }
@media (max-width: 820px){ .feature-grid { grid-template-columns: 1fr; } }

/* ---------- Screenshots ---------- */
#screenshots { background: var(--bg-2); }
.shots { display: grid; grid-template-columns: repeat(3,1fr); gap: 26px; max-width: 900px; margin: 0 auto; }
.shot { position: relative; text-align: center; }
.shot img { border-radius: 26px; border: 1px solid var(--line); box-shadow: var(--shadow); transition: transform .2s ease; }
.shot img:hover { transform: translateY(-6px); }
.shot p { margin-top: 16px; font-weight: 600; color: var(--text); font-size: .98rem; }
@media (max-width: 720px){ .shots { grid-template-columns: 1fr; max-width: 320px; } }

/* ---------- How it works ---------- */
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; counter-reset: step; }
.step {
  position: relative; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px 26px 26px;
}
.step .n {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  font-weight: 800; font-size: 1.1rem; color: #1a1200; background: var(--grad-amber);
  box-shadow: var(--shadow-amber); margin-bottom: 16px;
}
.step h3 { margin-bottom: 8px; }
.step p { margin: 0; font-size: .96rem; }
@media (max-width: 820px){ .steps { grid-template-columns: 1fr; } }

/* ---------- Guides ---------- */
#guides { background: var(--bg-2); }
.guide-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.guide-card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
.guide-card:hover { transform: translateY(-4px); border-color: var(--amber); background: var(--card-2); }
.guide-card .tag { font-size: .74rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--amber); }
.guide-card h3 { font-size: 1.12rem; margin: 0; }
.guide-card p { margin: 0; font-size: .93rem; flex-grow: 1; }
.guide-card .more { color: var(--amber); font-weight: 700; font-size: .92rem; display: inline-flex; align-items: center; gap: 6px; }
.guide-card:hover .more { gap: 10px; }
@media (max-width: 820px){ .guide-grid { grid-template-columns: 1fr; } }

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 22px 24px;
}
.faq-item h3 { font-size: 1.08rem; margin-bottom: 8px; display: flex; align-items: baseline; gap: 8px; }
.faq-item h3::before { content: "Q"; color: var(--amber); font-weight: 800; }
.faq-item p { margin: 0 0 12px; font-size: .96rem; }
.faq-item .more { color: var(--amber); font-weight: 700; font-size: .92rem; display: inline-flex; align-items: center; gap: 6px; }
.faq-item .more:hover { gap: 10px; }

/* ---------- CTA ---------- */
.cta-band { position: relative; overflow: hidden; }
.cta-inner {
  background: var(--card); border: 1px solid var(--line-2); border-radius: 28px;
  padding: 54px 40px; text-align: center; position: relative; overflow: hidden;
}
.cta-inner::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(500px 300px at 50% 0%, rgba(255,138,0,.22), transparent 70%);
}
.cta-inner > * { position: relative; z-index: 1; }
.cta-inner h2 { margin-bottom: 12px; }
.cta-inner p { max-width: 52ch; margin: 0 auto 26px; font-size: 1.08rem; }
.cta-inner .hero-cta { justify-content: center; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-2); border-top: 1px solid var(--line); padding: 54px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; margin-bottom: 40px; }
.footer-grid h4 { font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted-2); margin: 0 0 14px; }
.footer-grid a { display: block; color: var(--muted); font-size: .93rem; padding: 5px 0; transition: color .15s; }
.footer-grid a:hover { color: var(--amber); }
.footer-brand p { font-size: .92rem; max-width: 34ch; }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  border-top: 1px solid var(--line); padding-top: 24px; color: var(--muted-2); font-size: .85rem;
}
@media (max-width: 720px){ .footer-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- Guide article pages ---------- */
.article-hero { padding: 54px 0 20px; position: relative; }
.article-hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(600px 340px at 80% 0%, rgba(255,138,0,.14), transparent 60%);
}
.breadcrumb { font-size: .85rem; color: var(--muted-2); margin-bottom: 18px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--amber); }
.article { max-width: 760px; margin: 0 auto; padding: 20px 0 40px; }
.article h1 { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: 18px; }
.article .lead { font-size: 1.15rem; color: #d4d4d8; margin-bottom: 30px; }
.article h2 { font-size: 1.6rem; margin: 42px 0 14px; }
.article h3 { font-size: 1.2rem; margin: 28px 0 10px; }
.article p, .article li { color: #c7c7ce; font-size: 1.02rem; }
.article ul, .article ol { padding-left: 22px; margin: 0 0 18px; }
.article li { margin-bottom: 9px; }
.article strong { color: var(--text); }
.article a.inline { color: var(--amber); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }

.callout {
  background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--amber);
  border-radius: 12px; padding: 20px 22px; margin: 26px 0;
}
.callout strong { color: var(--amber); }

.step-block {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 20px 22px; margin-bottom: 14px;
}
.step-block .n {
  flex: 0 0 auto; width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  font-weight: 800; color: #1a1200; background: var(--grad-amber);
}
.step-block h3 { margin: 0 0 6px; font-size: 1.08rem; }
.step-block p { margin: 0; font-size: .98rem; }

.inline-cta {
  background: var(--card); border: 1px solid var(--line-2); border-radius: 20px;
  padding: 32px; text-align: center; margin: 44px 0;
  background-image: radial-gradient(400px 200px at 50% 0, rgba(255,138,0,.16), transparent 70%);
}
.inline-cta h3 { font-size: 1.4rem; margin-bottom: 8px; }
.inline-cta p { margin-bottom: 20px; }
.inline-cta .hero-cta { justify-content: center; }

.related { border-top: 1px solid var(--line); padding-top: 30px; margin-top: 40px; }
.related h2 { font-size: 1.3rem; margin-bottom: 18px; }
.related-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
.related-grid a {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 18px; font-weight: 600; color: var(--text); transition: border-color .15s, transform .15s;
}
.related-grid a:hover { border-color: var(--amber); transform: translateY(-2px); }
.related-grid a span { display: block; color: var(--muted-2); font-size: .85rem; font-weight: 400; margin-top: 4px; }
@media (max-width: 620px){ .related-grid { grid-template-columns: 1fr; } }

.toc {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 20px 24px; margin-bottom: 34px;
}
.toc strong { display: block; margin-bottom: 10px; font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted-2); }
.toc a { color: var(--muted); font-size: .95rem; padding: 4px 0; display: block; }
.toc a:hover { color: var(--amber); }