/* ==========================================================================
   McCabe Tech Labs — site styles
   Brand palette mirrors the GuitarTech app (dark + gold).
   No external dependencies (no web fonts, no frameworks) so the site can be
   hosted anywhere and loads fast for App Store / D&B reviewers.
   ========================================================================== */

:root {
  --bg:            #0F0F0F;   /* app gtBackground */
  --surface:       #161616;
  --surface-2:     #1C1C1C;
  --border:        rgba(255, 255, 255, 0.08);
  --border-gold:   rgba(201, 168, 76, 0.35);
  --gold:          #C9A84C;   /* app gtGold */
  --gold-light:    #E8C76A;   /* app gtGoldLight */
  --gold-dim:      #8A6E2F;   /* app gtGoldDim */
  --text:          #F0F0F0;   /* app gtTextPrimary */
  --text-2:        #B6B6B6;
  --text-3:        #8A8A8A;   /* app gtTextTertiary */
  --radius:        16px;
  --radius-lg:     24px;
  --maxw:          1080px;
  --shadow:        0 24px 60px -20px rgba(0, 0, 0, 0.7);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
          Arial, "Apple Color Emoji", 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: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: var(--gold-light); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; font-weight: 700; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); margin: 0 0 0.5em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin: 0 0 0.6em; }
h3 { font-size: 1.25rem; margin: 0 0 0.4em; }

p { margin: 0 0 1em; color: var(--text-2); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.muted   { color: var(--text-3); }
.gold    { color: var(--gold); }
.center  { text-align: center; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gold);
  margin: 0 0 0.8em;
}

/* ----- Buttons ----------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.85em 1.5em;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: #1a1400;
  box-shadow: 0 10px 28px -10px rgba(201, 168, 76, 0.6);
}
.btn-primary:hover { box-shadow: 0 14px 34px -10px rgba(201, 168, 76, 0.75); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-gold);
}
.btn-ghost:hover { background: rgba(201, 168, 76, 0.08); }

/* ----- Header / nav ------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 15, 15, 0.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6em;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  font-size: 1.05rem;
}
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.brand .accent { color: var(--gold); }
.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-links a {
  color: var(--text-2);
  font-size: 0.95rem;
  font-weight: 500;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links a.active { color: var(--gold); }
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  color: var(--text);
  font-size: 1.6rem;
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 66px; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(15, 15, 15, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 8px 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 24px; width: 100%; }
}

/* ----- Sections ---------------------------------------------------------- */
section { padding: 84px 0; }
.section-tight { padding: 56px 0; }

.hero {
  position: relative;
  padding: 110px 0 90px;
  overflow: hidden;
  text-align: center;
}
.hero::before {
  content: "";
  position: absolute;
  top: -30%; left: 50%;
  width: 900px; height: 900px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(201, 168, 76, 0.16), transparent 60%);
  pointer-events: none;
}
.hero .container { position: relative; }
.hero p.lead { font-size: 1.2rem; max-width: 620px; margin: 0 auto 1.8em; color: var(--text-2); }
.hero-actions { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; }

.lead { font-size: 1.15rem; color: var(--text-2); }

/* ----- Grid / cards ------------------------------------------------------ */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover { border-color: var(--border-gold); transform: translateY(-3px); }
.card h3 { color: var(--text); }
.card .icon {
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: rgba(201, 168, 76, 0.12);
  border: 1px solid var(--border-gold);
  font-size: 1.4rem;
  margin-bottom: 16px;
}

/* ----- Split feature rows ------------------------------------------------ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split.reverse .split-media { order: 2; }
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; gap: 28px; }
  .split.reverse .split-media { order: 0; }
}

/* ----- Product showcase -------------------------------------------------- */
.app-hero-icon {
  width: 108px; height: 108px;
  border-radius: 24px;
  box-shadow: var(--shadow);
  margin: 0 auto 26px;
  border: 1px solid var(--border);
}
.shots {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 12px 4px 20px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.shots img {
  width: 240px;
  flex: 0 0 auto;
  border-radius: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  scroll-snap-align: center;
}
.phone {
  border-radius: 30px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  max-width: 300px;
  margin: 0 auto;
}

/* ----- Pricing ----------------------------------------------------------- */
.price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 720px) { .price-grid { grid-template-columns: 1fr; } }
.price-card { position: relative; }
.price-card.featured { border-color: var(--border-gold); }
.badge {
  position: absolute; top: 18px; right: 18px;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #1a1400;
  background: var(--gold);
  padding: 4px 10px; border-radius: 999px;
}
.feature-list { list-style: none; padding: 0; margin: 16px 0 0; }
.feature-list li {
  padding: 8px 0 8px 28px;
  position: relative;
  color: var(--text-2);
  border-top: 1px solid var(--border);
}
.feature-list li::before {
  content: "✓";
  position: absolute; left: 0; top: 8px;
  color: var(--gold);
  font-weight: 700;
}

/* ----- Legal / prose ----------------------------------------------------- */
.prose { max-width: 760px; }
.prose h2 { margin-top: 1.6em; font-size: 1.35rem; color: var(--gold); }
.prose h2:first-of-type { margin-top: 0.5em; }
.prose p, .prose li { color: var(--text-2); }
.prose .updated { color: var(--text-3); font-size: 0.9rem; margin-bottom: 2em; }

/* ----- FAQ --------------------------------------------------------------- */
details.faq {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 20px;
  margin-bottom: 14px;
  background: var(--surface);
}
details.faq summary {
  cursor: pointer;
  padding: 18px 0;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "+"; color: var(--gold); font-size: 1.4rem; }
details.faq[open] summary::after { content: "–"; }
details.faq[open] summary { border-bottom: 1px solid var(--border); }
details.faq p { padding: 16px 0; margin: 0; }

/* ----- Contact ----------------------------------------------------------- */
.contact-card {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}
.contact-row { display: flex; gap: 12px; align-items: baseline; padding: 10px 0; border-top: 1px solid var(--border); }
.contact-row:first-child { border-top: 0; }
.contact-row .label { color: var(--text-3); min-width: 90px; font-size: 0.9rem; }
.contact-row .value { color: var(--text); }

/* ----- CTA band ---------------------------------------------------------- */
.cta-band {
  background: linear-gradient(135deg, rgba(201,168,76,0.10), rgba(201,168,76,0.02));
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
}

/* ----- Footer ------------------------------------------------------------ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 40px;
  color: var(--text-3);
  font-size: 0.92rem;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 28px;
  margin-bottom: 32px;
}
.footer-col h4 {
  color: var(--text);
  font-size: 0.95rem;
  margin: 0 0 12px;
  letter-spacing: 0.02em;
}
.footer-col a { display: block; color: var(--text-3); padding: 4px 0; }
.footer-col a:hover { color: var(--gold); text-decoration: none; }
.footer-brand { max-width: 280px; }
.footer-brand .brand { margin-bottom: 12px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ----- Utilities --------------------------------------------------------- */
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.stack > * + * { margin-top: 1rem; }
.divider { height: 1px; background: var(--border); border: 0; margin: 0; }
.tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--gold);
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid var(--border-gold);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 16px;
}