/* ============================================================
   SERENZA · topbar.css
   Fuente ÚNICA para topbar, botones y wrap compartido.
   Cargado por base.html — lo tienen landing Y blog.
   ============================================================ */

/* ---------- Wrap ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }

/* ---------- Botones ---------- */
.btn {
  font-family: var(--sans);
  font-weight: var(--fw-regular);
  font-size: 13.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 30px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: var(--forest);
  color: var(--paper);
  cursor: pointer;
  transition: background 0.25s, color 0.25s, border-color 0.25s, transform 0.25s;
  white-space: nowrap;
  text-decoration: none;
}
.btn:hover { background: var(--forest-80); }
.btn--gold { background: var(--gold); color: var(--forest); }
.btn--gold:hover { background: var(--gold-deep); color: var(--paper); }
.btn--ghost { background: transparent; color: var(--forest); border-color: var(--forest); }
.btn--ghost:hover { background: var(--forest); color: var(--paper); }
.btn--on-dark { background: var(--paper); color: var(--forest); }
.btn--on-dark:hover { background: var(--sand); }
.btn--lg { font-size: 15px; padding: 17px 38px; }
.btn--sm { font-size: 12px; padding: 9px 18px; }
.btn--block { display: flex; width: 100%; }

/* ============================================================
   TOPBAR — glassmorphism on scroll
   ============================================================ */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px var(--gutter);
  transition: background 0.4s, box-shadow 0.4s, padding 0.4s;
}
.topbar.scrolled {
  background: rgba(243, 238, 231, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--paper-deep);
  padding-top: 13px;
  padding-bottom: 13px;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
}
.brand:hover, .brand:focus { text-decoration: none; }
.brand svg { width: 20px; height: auto; }
.brand .wm {
  font-family: var(--serif);
  font-size: 23px;
  color: var(--forest);
  letter-spacing: 0.04em;
}

/* Desktop nav */
.topbar nav { display: flex; gap: 30px; }
.topbar nav a {
  font-family: var(--sans);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.25s;
}
.topbar nav a:hover { color: var(--forest); }

/* CTA buttons */
.topbar .right { display: flex; align-items: center; gap: 24px; }

/* Desktop breakpoints */
/* Laptop angosto: nav + botones aún visibles, comprimimos espaciados */
@media (max-width: 1100px) {
  .topbar { padding-left: 24px; padding-right: 24px; }
  .topbar nav { gap: 20px; }
  .topbar nav a { letter-spacing: 0.1em; }
  .topbar .right { gap: 12px; }
  .topbar .right .btn { padding: 12px 20px; font-size: 12.5px; letter-spacing: 0.08em; }
}
@media (max-width: 900px) {
  .topbar nav { display: none; }
}
@media (max-width: 900px) {
  .topbar .right { display: none; }
}

/* ============================================================
   HAMBURGER
   ============================================================ */
.topbar__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: none;
  border: 0;
  cursor: pointer;
  z-index: 60;
}
.topbar__burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--forest);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
/* X animation */
.topbar__burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.topbar__burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.topbar__burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
@media (max-width: 900px) {
  .topbar__burger { display: flex; }
}

/* ============================================================
   MOBILE MENU — full-screen overlay
   ============================================================ */
.topbar__mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--paper);
  z-index: 55;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 80px 24px 40px;
}
.topbar__mobile-menu.is-open { display: flex; }
.topbar__mobile-menu a {
  font-family: var(--sans);
  font-size: 16px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--forest);
  text-decoration: none;
  padding: 14px 24px;
  width: 100%;
  max-width: 300px;
  text-align: center;
  border-radius: var(--radius);
  transition: background 0.2s;
}
.topbar__mobile-menu a:hover { background: var(--paper-deep); }
/* Los .btn conservan su propio color/fondo (la regla a de arriba los pisaba) */
.topbar__mobile-menu a.btn { color: var(--paper); }
.topbar__mobile-menu a.btn--ghost { color: var(--forest); }
.topbar__mobile-menu a.btn:hover { background: var(--forest-80); }
.topbar__mobile-menu a.btn--ghost:hover { background: var(--forest); color: var(--paper); }
.topbar__mobile-menu .btn { margin-top: 8px; }
@media (max-width: 480px) {
  .topbar__mobile-menu { padding: 80px 20px 32px; }
  .topbar__mobile-menu a:not(.btn) { font-size: 14px; padding: 12px 20px; }
  .topbar__mobile-menu .btn { font-size: 13px; padding: 14px 24px; }
}