/* =====================================================================
   VibeKeys design system — shared across all pages (2026 redesign)
   Warm editorial light theme + dark mode toggle.
   Fonts: Instrument Serif (display) · Hanken Grotesk (body) · JetBrains Mono (labels)
   ===================================================================== */

:root {
  --bg: #FBF6EA;
  --bg2: #F4EEDE;
  --card: #ffffff;
  --ink: #211D17;
  --muted: #6E6557;
  --muted2: #8a7f6d;
  --accent: #2E7D4F;
  --accenttint: rgba(46, 125, 79, 0.06);
  --line: rgba(33, 29, 23, 0.10);
  --line-strong: rgba(33, 29, 23, 0.18);
  --imgbg: #e7e1d2;
  --btnbg: #211D17;
  --btntext: #FBF6EA;
  --shadow: rgba(33, 29, 23, 0.40);
  --navbg: rgba(251, 246, 234, 0.82);
  --ctaveil: rgba(251, 246, 234, 0.97);
  --ctaveil2: rgba(251, 246, 234, 0.82);
  --ctaveil3: rgba(251, 246, 234, 0.28);

  --font-display: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --font-body: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --maxw: 1180px;
  --maxw-narrow: 1120px;
}

[data-theme="dark"] {
  --bg: #211D17;
  --bg2: #2A2218;
  --card: #241E18;
  --ink: #FBF6EA;
  --muted: #ADA28E;
  --muted2: #9C9079;
  --accent: #7FCB9C;
  --accenttint: rgba(127, 203, 156, 0.08);
  --line: rgba(245, 238, 222, 0.12);
  --line-strong: rgba(245, 238, 222, 0.22);
  --imgbg: #2E2820;
  --btnbg: #FBF6EA;
  --btntext: #211D17;
  --shadow: rgba(0, 0, 0, 0.55);
  --navbg: rgba(24, 20, 17, 0.82);
  --ctaveil: rgba(33, 29, 23, 0.97);
  --ctaveil2: rgba(33, 29, 23, 0.82);
  --ctaveil3: rgba(33, 29, 23, 0.28);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

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

.mono { font-family: var(--font-mono); }

/* ---------- Typography ---------- */
h1, h2 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.04;
}
h1 { font-size: clamp(2.8rem, 5.4vw, 4.8rem); }
h2 { font-size: clamp(2rem, 3.8vw, 3rem); }
h3 { font-family: var(--font-body); font-weight: 600; letter-spacing: -0.01em; }
.serif { font-family: var(--font-display); font-weight: 400; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  display: block;
}

.lead {
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.6;
  max-width: 44rem;
}

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw-narrow); margin: 0 auto; padding-left: 2rem; padding-right: 2rem; }
.wrap-wide { max-width: var(--maxw); }
section { padding: 5.5rem 0; }
.section-alt { background: var(--bg2); border-top: 1px solid var(--line); }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navbg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.9rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  flex: none;
}
.nav-logo img { height: 30px; width: auto; }
.nav-logo span {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.32rem;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.92rem;
  font-weight: 500;
  list-style: none;
}
.nav-links a { text-decoration: none; color: var(--ink); transition: color 0.2s ease; }
.nav-links a:hover { color: var(--accent); }
.nav-links a.active { color: var(--accent); font-weight: 600; }

.theme-toggle {
  cursor: pointer;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  flex: none;
}

.nav-cta {
  text-decoration: none;
  background: var(--btnbg);
  color: var(--btntext);
  padding: 0.5rem 1.1rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.9rem;
}
/* keep CTA text legible (beats .nav-links a color) */
.nav-links a.nav-cta,
.nav-links a.nav-cta:hover { color: var(--btntext); }
.nav-links a.nav-cta:hover { opacity: 0.88; }

/* mobile menu */
.menu-btn {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  cursor: pointer;
}
.menu-btn span { width: 20px; height: 2px; background: var(--ink); border-radius: 2px; }
.mobile-menu { display: none; border-top: 1px solid var(--line); background: var(--bg); }
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 0.9rem 2rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  border-bottom: 1px solid var(--line);
}
.mobile-menu .mm-label {
  display: block;
  padding: 0.9rem 2rem 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted2);
}

/* nav dropdown (Resources) */
.dropdown { position: relative; }
.dropdown-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 500;
  background: none;
  border: none;
  font-family: inherit;
  padding: 0;
}
.dropdown-btn:hover { color: var(--accent); }
.dropdown-btn .caret { font-size: 0.6rem; opacity: 0.6; transition: transform 0.2s ease; }
.dropdown.open .dropdown-btn .caret { transform: rotate(180deg); }
.dropdown-menu {
  position: absolute;
  top: 175%;
  left: 0;
  min-width: 190px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 16px 40px -16px var(--shadow);
  padding: 0.4rem 0;
  display: none;
  z-index: 200;
}
.dropdown.open .dropdown-menu { display: block; }
.dropdown-menu a {
  display: block;
  padding: 0.6rem 1.1rem;
  text-decoration: none;
  color: var(--ink);
  font-size: 0.9rem;
  white-space: nowrap;
}
.dropdown-menu a:hover { color: var(--accent); background: var(--accenttint); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  padding: 0.95rem 1.9rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
  border: none;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--btnbg); color: var(--btntext); }
.btn-outline { border: 1.5px solid var(--ink); color: var(--ink); background: transparent; }
.btn-accent { background: var(--accent); color: #fff; }

/* ---------- Cards / grids ---------- */
.card {
  background: var(--card);
  border-radius: 14px;
  padding: 1.8rem;
}
.grid { display: grid; gap: 1.3rem; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.hairline-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.hairline-grid > * { background: var(--card); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  background: var(--bg);
  text-align: center;
  color: var(--muted2);
  font-size: 0.92rem;
  padding: 2.4rem 2rem;
  line-height: 1.8;
}
.footer a { color: var(--accent); text-decoration: none; }

/* ---------- Unified site footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--bg); }
.site-footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 3.5rem 2rem 2.5rem;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr;
  gap: 2rem;
}
.site-footer-brand a { display: inline-flex; align-items: center; gap: 0.55rem; text-decoration: none; margin-bottom: 0.9rem; }
.site-footer-brand img { height: 28px; width: auto; }
.site-footer-brand .bn { font-family: var(--font-body); font-weight: 700; font-size: 1.2rem; letter-spacing: -0.02em; color: var(--ink); }
.site-footer-brand p { color: var(--muted2); font-size: 0.9rem; line-height: 1.55; max-width: 16rem; }
.footer-col h4 { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted2); margin: 0 0 1rem; font-weight: 500; }
.footer-col a { display: block; text-decoration: none; color: var(--ink); font-size: 0.92rem; padding: 0.32rem 0; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--accent); }
.site-footer-bottom { border-top: 1px solid var(--line); text-align: center; color: var(--muted2); font-size: 0.84rem; padding: 1.4rem 2rem; line-height: 1.6; }
@media (max-width: 900px) {
  .site-footer-inner { grid-template-columns: 1fr 1fr; gap: 1.8rem 1.5rem; }
  .site-footer-brand { grid-column: 1 / -1; }
}

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .menu-btn { display: flex; }
  .wrap { padding-left: 1.25rem; padding-right: 1.25rem; }
  section { padding: 4rem 0; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}