/* ==========================================================
   COMPONENTS — botones, cards, forms, nav, footer, sticky-wa
   V4 — card-glow, card escalada, card del medio corregida
   ========================================================== */

/* ============================
   BOTONES
   ============================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-8);
  font-family: var(--font-texto);
  font-size: var(--size-body);
  font-weight: 700;
  line-height: 1;
  border-radius: var(--radius-pill);
  transition: background-color var(--duration-normal) var(--ease-smooth),
              transform var(--duration-fast) var(--ease-smooth),
              box-shadow var(--duration-normal) var(--ease-smooth);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

/* Primario — violeta */
.btn--primary {
  background-color: var(--violeta);
  color: var(--crema-calido);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background-color: var(--violeta-mid);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Secundario — outline violeta */
.btn--secondary {
  background-color: transparent;
  color: var(--violeta-dark);
  border: 2px solid var(--violeta);
}

.btn--secondary:hover {
  background-color: var(--violeta);
  color: var(--crema-calido);
  transform: translateY(-2px);
}

/* Dorado — detalles premium */
.btn--gold {
  background-color: var(--dorado);
  color: var(--negro-mate);
  box-shadow: 0 2px 12px rgba(212,175,111,0.3);
}

.btn--gold:hover {
  background-color: var(--dorado-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(212,175,111,0.45);
}

/* Ghost — sobre fondos oscuros */
.btn--ghost {
  background-color: transparent;
  color: var(--crema-calido);
  border: 2px solid rgba(250,250,247,0.6);
}

.btn--ghost:hover {
  background-color: rgba(250,250,247,0.15);
  border-color: var(--crema-calido);
}

/* WhatsApp — verde */
.btn--wa {
  background-color: #25d366;
  color: #ffffff;
  box-shadow: 0 2px 12px rgba(37,211,102,0.35);
}

.btn--wa:hover {
  background-color: #1da851;
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(37,211,102,0.45);
}

.btn--sm {
  padding: var(--sp-3) var(--sp-6);
  font-size: var(--size-small);
}

.btn--lg {
  padding: var(--sp-6) var(--sp-12);
  font-size: 1.125rem;
}

/* ============================
   STICKY WHATSAPP
   ============================ */

.sticky-wa {
  position: fixed;
  bottom: var(--sp-6);
  right: var(--sp-6);
  z-index: var(--z-wa);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-wa);
  transition: transform var(--duration-normal) var(--ease-smooth),
              box-shadow var(--duration-normal) var(--ease-smooth);
  text-decoration: none;
  overflow: hidden;
}

.sticky-wa:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 6px 28px rgba(37,211,102,0.5);
}

.sticky-wa svg {
  width: 32px;
  height: 32px;
  fill: #ffffff;
}

.sticky-wa::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(37,211,102,0.4);
  animation: wa-pulse 2.5s ease-out infinite;
}

@keyframes wa-pulse {
  0%   { transform: scale(1); opacity: 0.6; }
  70%  { transform: scale(1.6); opacity: 0; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* ============================
   HEADER / NAVEGACIÓN
   ============================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background-color: rgba(250,250,247,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(159,135,213,0.15);
  transition: box-shadow var(--duration-normal) var(--ease-smooth);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--sp-6);
}

.header-logo {
  flex-shrink: 0;
}

.header-logo img {
  height: 48px;
  width: auto;
}

.nav-primary {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.nav-primary a {
  font-family: var(--font-texto);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--tierra);
  transition: color var(--duration-fast);
  position: relative;
}

.nav-primary a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--violeta);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-smooth);
}

.nav-primary a:hover,
.nav-primary a[aria-current="page"] {
  color: var(--violeta-dark);
}

.nav-primary a:hover::after,
.nav-primary a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-cta {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--sp-2);
  cursor: pointer;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--tierra);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 900px) {
  .nav-primary {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--crema-calido);
    padding: var(--sp-8) var(--sp-6);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-6);
    border-bottom: 1px solid rgba(159,135,213,0.2);
    box-shadow: var(--shadow-md);
    z-index: var(--z-header);
  }

  .nav-primary.open {
    display: flex;
  }

  .nav-primary a {
    font-size: 1.1rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }
}

/* ============================
   CARDS — escala V4
   ============================ */

.card {
  background: var(--crema-calido);
  border: 1px solid rgba(212,175,111,0.15);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  box-shadow: 0 2px 8px rgba(42,37,32,0.06), 0 12px 32px rgba(42,37,32,0.10);
  transition: transform var(--duration-normal) var(--ease-smooth),
              box-shadow var(--duration-normal) var(--ease-smooth);
  position: relative;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 4px 16px rgba(42,37,32,0.08), 0 20px 56px rgba(42,37,32,0.18);
}

.card-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--sp-4);
}

.card-title {
  font-family: var(--font-subtitulos);
  font-size: var(--size-card-title);
  font-weight: 500;
  color: var(--tierra);
  margin-bottom: var(--sp-3);
}

.card-text {
  font-size: var(--size-card-body);
  color: var(--tierra);
  line-height: 1.65;
}

/* Card pilares */
.card-pilar {
  text-align: center;
  padding: var(--sp-10) var(--sp-6);
}

.card-pilar .card-icon {
  margin-inline: auto;
  margin-bottom: var(--sp-6);
}

/* ============================
   G5 — CARD DEL MEDIO GLOW
   Mismo fondo que laterales + pseudo-element glow violeta
   Aplica a .card-pilar--premium
   ============================ */

.card-pilar--premium {
  background: var(--crema-calido);
  border-color: rgba(159,135,213,0.25);
  border-radius: calc(var(--radius-xl) + 4px);
  transform: scale(1.04);
  position: relative;
  overflow: visible;
}

/* Glow detrás de la card del medio */
.card-pilar--premium::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: calc(var(--radius-xl) + 12px);
  background: radial-gradient(ellipse at center, rgba(159,135,213,0.42) 0%, rgba(159,135,213,0.0) 70%);
  filter: blur(18px);
  z-index: -1;
  transition: opacity var(--duration-normal) var(--ease-smooth),
              transform var(--duration-normal) var(--ease-smooth);
}

.card-pilar--premium:hover {
  transform: scale(1.04) translateY(-6px);
  box-shadow: 0 12px 40px rgba(159,135,213,0.25);
}

.card-pilar--premium:hover::before {
  opacity: 1.4;
  transform: scale(1.1);
}

/* Texto en card del medio — violeta oscuro para contraste (G3) */
.card-pilar--premium .card-title {
  color: var(--violeta-dark);
}

.card-pilar--premium .card-text {
  color: var(--tierra);
}

/* Card beneficio */
.card-beneficio {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-4);
  padding: var(--sp-6);
  background: transparent;
  border: none;
}

.card-beneficio:hover {
  background: rgba(159,135,213,0.06);
  border-radius: var(--radius-md);
}

/* Card modalidad yoga */
.card-modalidad {
  border-left: 3px solid var(--violeta);
  padding-left: var(--sp-6);
  background: var(--crema-calido);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  border-top: 1px solid rgba(159,135,213,0.12);
  border-right: 1px solid rgba(159,135,213,0.12);
  border-bottom: 1px solid rgba(159,135,213,0.12);
}

.card-modalidad .card-title {
  font-size: var(--size-card-title);
}

.card-modalidad .card-text {
  font-size: var(--size-card-body);
}

/* ============================
   FORMULARIOS
   ============================ */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.form-label {
  font-family: var(--font-texto);
  font-size: var(--size-small);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--tierra);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--sp-4) var(--sp-6);
  font-family: var(--font-texto);
  font-size: var(--size-body);
  color: var(--negro-mate);
  background: var(--crema-calido);
  border: 1.5px solid rgba(159,135,213,0.3);
  border-radius: var(--radius-md);
  transition: border-color var(--duration-fast),
              box-shadow var(--duration-fast);
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--tierra-light);
  opacity: 0.7;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--violeta);
  box-shadow: 0 0 0 3px rgba(159,135,213,0.15);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-grid {
  display: grid;
  gap: var(--sp-6);
}

@media (min-width: 640px) {
  .form-grid--2 {
    grid-template-columns: 1fr 1fr;
  }
}

.form-submit {
  margin-top: var(--sp-4);
}

.form-microcopy {
  font-size: var(--size-small);
  color: var(--tierra-light);
  margin-top: var(--sp-2);
  text-align: center;
}

/* ============================
   FOOTER
   ============================ */

.site-footer {
  background: var(--negro-mate);
  color: var(--arena);
  padding-block: var(--sp-16) var(--sp-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-10);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand .footer-logo {
  height: 48px;
  width: auto;
  margin-bottom: var(--sp-4);
}

.footer-tagline {
  font-family: var(--font-subtitulos);
  font-size: 1rem;
  font-style: italic;
  color: rgba(245,235,221,0.7);
  margin-bottom: var(--sp-6);
  max-width: 30ch;
}

.footer-social {
  display: flex;
  gap: var(--sp-4);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(159,135,213,0.2);
  color: var(--arena);
  transition: background var(--duration-fast);
}

.footer-social a:hover {
  background: var(--violeta);
}

.footer-social svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.footer-nav-title {
  font-family: var(--font-texto);
  font-size: var(--size-small);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--violeta);
  margin-bottom: var(--sp-4);
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.footer-nav-list a {
  font-size: 0.9rem;
  color: rgba(245,235,221,0.7);
  transition: color var(--duration-fast);
}

.footer-nav-list a:hover {
  color: var(--arena);
}

.footer-bottom {
  margin-top: var(--sp-12);
  padding-top: var(--sp-6);
  border-top: 1px solid rgba(245,235,221,0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  text-align: center;
}

.footer-copy {
  font-size: var(--size-small);
  color: rgba(245,235,221,0.4);
}

.footer-credit {
  font-size: var(--size-small);
  color: rgba(159,135,213,0.6);
}

.footer-credit a {
  color: var(--violeta);
  transition: color var(--duration-fast);
}

.footer-credit a:hover {
  color: var(--arena);
}

/* ============================
   CHIPS / TAGS
   ============================ */

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  background: rgba(159,135,213,0.12);
  color: var(--violeta-dark);
  border-radius: var(--radius-pill);
  font-size: var(--size-small);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.chip--gold {
  background: rgba(212,175,111,0.15);
  color: #8a6b20;
}

/* ============================
   GALERÍA FOTOS
   ============================ */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-4);
}

@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-smooth);
}

.gallery-item:hover img {
  transform: scale(1.04);
}

/* ============================
   PLAN CARD (yoga-online) — V4
   ============================ */

.plan-card {
  background: var(--crema-calido);
  border: 1px solid rgba(159,135,213,0.2);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  position: relative;
  overflow: visible;
  transition: transform var(--duration-normal) var(--ease-smooth),
              box-shadow var(--duration-normal) var(--ease-smooth);
}

.plan-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

/* Plan card del medio con glow (G5) */
.plan-card.destacado {
  border-color: rgba(159,135,213,0.3);
  background: var(--crema-calido);
}

.plan-card.destacado::before {
  content: '';
  position: absolute;
  inset: -10px;
  border-radius: calc(var(--radius-lg) + 10px);
  background: radial-gradient(ellipse at center, rgba(159,135,213,0.38) 0%, rgba(159,135,213,0.0) 70%);
  filter: blur(16px);
  z-index: -1;
  transition: opacity var(--duration-normal) var(--ease-smooth);
}

.plan-card.destacado:hover::before {
  opacity: 1.5;
}

.plan-card.destacado:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(159,135,213,0.22);
}

.plan-nombre {
  font-family: var(--font-subtitulos);
  font-size: var(--size-card-title);
  color: var(--violeta-dark);
  font-weight: 500;
}

.plan-precio {
  font-family: var(--font-subtitulos);
  font-size: clamp(1.25rem, 2.5vw, 1.6rem);
  color: var(--tierra);
  font-style: italic;
}

.plan-detalle {
  font-size: var(--size-card-body);
  color: var(--tierra);
  line-height: 1.6;
}