/* =================================================================
   MEDUMOND — Components
   Buttons, glassmorphism navbar, footer, logo, accordion.
   Cinematic dark system.
   ================================================================= */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: var(--radius-btn);
  transition: background-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease);
  line-height: 1;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible { outline: 2px solid var(--green-2); outline-offset: 3px; }

/* Gold primary CTA — green bg, navy text. The "Book a Discovery Call" button. */
.btn--gold {
  background: var(--green);
  color: var(--ink);
  box-shadow: 0 6px 20px rgba(63,163,125,0.25);
}
.btn--gold:hover { background: var(--green-deep); box-shadow: 0 8px 26px rgba(63,163,125,0.35); }

/* Ghost secondary CTA — transparent fill, green border + ivory text */
.btn--ghost {
  background: transparent;
  color: var(--ivory);
  border: 1px solid var(--ink-line);
}
.btn--ghost:hover { border-color: var(--green); color: var(--green-2); background: var(--green-soft); }

.btn--sm { padding: 10px 20px; font-size: 0.875rem; }

/* ---- Logo (official PNG artwork) ---- */
.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
}
.brand-img {
  height: 30px;
  width: auto;
  display: block;
  max-width: 180px;
}
.brand--footer .brand-img { height: 34px; }

/* ---- Navbar — translucent dark glassmorphism, sticky ---- */
.navbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background-color var(--t-nav) var(--ease),
              box-shadow var(--t-nav) var(--ease),
              backdrop-filter var(--t-nav) var(--ease),
              border-color var(--t-nav) var(--ease);
  background: transparent;
  border-bottom: 1px solid transparent;
}
.navbar.is-scrolled {
  background: rgba(15, 42, 68, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--ink-line);
}

.navbar__inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-6);
}

/* Anchor nav links (single page) */
.nav-links {
  justify-self: center;
  display: flex;
  gap: var(--space-6);
  align-items: center;
}
.nav-links a {
  font-size: 0.9rem;
  color: var(--ivory-soft);
  font-weight: 500;
  position: relative;
  padding-block: 4px;
  transition: color var(--t-fast) var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 0; height: 1.5px; background: var(--green);
  transition: width var(--t-fast) var(--ease);
}
.nav-links a:hover { color: var(--ivory); }
.nav-links a:hover::after,
.nav-links a.is-active::after { width: 100%; }
.nav-links a.is-active { color: var(--ivory); }

.nav-cta { display: flex; align-items: center; gap: var(--space-4); }

/* Hamburger */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: ""; display: block;
  width: 22px; height: 2px; background: var(--ivory);
  transition: transform var(--t-fast) var(--ease), opacity var(--t-fast) var(--ease);
}
.nav-toggle span::before { position: absolute; transform: translateY(-7px); }
.nav-toggle span::after  { position: absolute; transform: translateY(7px); }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after  { transform: rotate(-45deg); }

/* Mobile menu drawer */
.mobile-menu {
  position: fixed; inset: var(--nav-h) 0 auto 0;
  background: rgba(10, 29, 48, 0.97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: var(--space-6);
  display: grid; gap: var(--space-2);
  transform: translateY(-12px); opacity: 0; pointer-events: none;
  transition: transform var(--t-nav) var(--ease), opacity var(--t-nav) var(--ease);
  z-index: 99;
  border-bottom: 1px solid var(--ink-line);
}
.mobile-menu.is-open { transform: none; opacity: 1; pointer-events: auto; }
.mobile-menu a {
  color: var(--ivory-soft);
  padding: var(--space-3) 0;
  font-size: 1.05rem;
  border-bottom: 1px solid var(--ink-line);
}
.mobile-menu a:hover { color: var(--ivory); }
.mobile-menu .btn { margin-top: var(--space-3); justify-content: center; }

@media (max-width: 1023px) {
  .nav-links, .nav-cta .btn { display: none; }
  .nav-toggle { display: inline-flex; }
}

/* skip link */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--ivory); color: var(--ink);
  padding: var(--space-3) var(--space-4); border-radius: 0 0 var(--radius-btn) 0;
}
.skip-link:focus { left: 0; }

/* ---- Footer ---- */
.footer {
  background: var(--ink-deep);
  color: var(--ivory-soft);
  padding-top: var(--space-9);
  border-top: 1px solid var(--ink-line);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-7);
  padding-bottom: var(--space-7);
}
.footer__brand .brand { display: block; margin-bottom: var(--space-4); }
.footer__brand p {
  font-size: var(--fs-footer);
  color: var(--ivory-soft);
  max-width: 32ch;
  line-height: 1.55;
}
.footer__col h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green-2);
  margin-bottom: var(--space-4);
}
.footer__col ul { display: grid; gap: var(--space-2); }
.footer__col a {
  font-size: var(--fs-footer);
  color: var(--ivory-soft);
  transition: color var(--t-fast) var(--ease);
}
.footer__col a:hover { color: var(--green-2); }

.footer__small {
  border-top: 1px solid var(--ink-line);
  padding-top: var(--space-4);
  padding-bottom: var(--space-6);
  text-align: center;
}
.footer__small p {
  color: var(--ivory-soft);
  opacity: 0.7;
  font-size: var(--fs-fine);
  line-height: 1.5;
  max-width: 640px;
  margin-inline: auto;
}

@media (max-width: 767px) {
  .footer__grid { grid-template-columns: 1fr; gap: var(--space-3); }
  /* Mobile: footer columns collapse to accordion, default collapsed */
  .footer__col h4 {
    display: flex; justify-content: space-between; align-items: center;
    cursor: pointer; padding: var(--space-3) 0;
    border-bottom: 1px solid var(--ink-line);
  }
  .footer__col h4::after { content: "+"; color: var(--green-2); font-weight: 400; transition: transform var(--t-fast); }
  .footer__col.is-open h4::after { content: "–"; }
  .footer__col ul {
    max-height: 0; overflow: hidden;
    transition: max-height var(--t-nav) var(--ease);
    margin: 0;
  }
  .footer__col.is-open ul { max-height: 320px; }
  .footer__brand { padding-bottom: var(--space-2); }
  .brand-img { height: 26px; }
}

/* ---- Generic accordion (kept for FAQ-style blocks if needed) ---- */
.accordion__item { border-bottom: 1px solid var(--ink-line); }
.accordion__item:first-child { border-top: 1px solid var(--ink-line); }
.accordion__btn {
  width: 100%;
  display: flex; justify-content: space-between; align-items: center;
  gap: var(--space-4);
  text-align: left;
  padding: var(--space-5) 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--ivory);
}
.accordion__btn .pm {
  flex-shrink: 0; color: var(--green-2);
  font-size: 1.4rem; line-height: 1;
  transition: transform var(--t-fast) var(--ease);
}
.accordion__btn[aria-expanded="true"] .pm { transform: rotate(45deg); }
.accordion__panel { max-height: 0; overflow: hidden; transition: max-height var(--t-nav) var(--ease); }
.accordion__panel-inner { padding-bottom: var(--space-5); color: var(--ivory-soft); }