/* ============================================================================
   BASE.CSS — Dark Monochromatic Foundation (Sin Rojo)
   Lujo minimalista, Alto contraste (#000000 & #FFFFFF), Estilo Dithering Shader
============================================================================ */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-void);
}

body {
  margin: 0;
  background-color: var(--bg-void);
  color: var(--c-white);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Sutil ruido/grano de película tipo dither shader */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
}

/* ---- Scrollbar Monocromático ---- */
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}

::-webkit-scrollbar-track {
  background: var(--c-black);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-pill);
  transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--c-white);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

/* ---- Selección de Texto ---- */
::selection {
  background: var(--c-white);
  color: var(--c-black);
}

/* ---- Elementos Básicos ---- */
img, video {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all var(--dur-fast) var(--ease-quick);
}

ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  margin: 0;
  line-height: 1.1;
  color: var(--c-white);
  font-weight: 700;
  letter-spacing: -0.02em;
}

p {
  margin: 0;
  color: var(--text-mid);
}

button, input, textarea {
  font-family: inherit;
  color: inherit;
}

/* Foco accesible */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--c-white);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---- Contenedores ---- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-4);
  position: relative;
  z-index: 2;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }
}

/* ---- Secciones ---- */
.section {
  padding: var(--space-6) 0;
  position: relative;
  z-index: 2;
}

.section--tight {
  padding: var(--space-5) 0;
}

.section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

/* ---- Eyebrows Técnicos (Akkurat Mono 14px) ---- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-white);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  background: rgba(14, 14, 20, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(14px);
  text-shadow: none;
}

.eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-white);
  box-shadow: 0 0 8px #ffffff, 0 0 14px rgba(255, 255, 255, 0.6);
  animation: pulse-white 1.8s infinite ease-in-out;
}

@keyframes pulse-white {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.35); opacity: 0.5; }
}

.section-title {
  font-size: var(--fs-h1);
  margin-top: var(--space-2);
  color: var(--c-white);
  text-wrap: balance;
  text-transform: uppercase;
  text-shadow: none;
}

.section-lede {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: #DFE0EB;
  max-width: 740px;
  margin-top: var(--space-2);
  line-height: 1.6;
  text-shadow: none;
}

/* ---- Botones Dinámicos de Alto Movimiento & Liquid Glass (<0.22s) ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65em;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.32);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.22) 0%, rgba(255, 255, 255, 0.06) 50%, rgba(14, 14, 20, 0.72) 100%);
  color: #FFFFFF;
  text-shadow: none;
  cursor: pointer;
  backdrop-filter: blur(20px) saturate(190%);
  -webkit-backdrop-filter: blur(20px) saturate(190%);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.7), inset 0 1px 1px rgba(255, 255, 255, 0.5), inset 0 -1px 1px rgba(0, 0, 0, 0.5);
  transition: transform var(--dur-fast) var(--ease-elastic),
              background var(--dur-fast) var(--ease-quick),
              border-color var(--dur-fast) var(--ease-quick),
              box-shadow var(--dur-fast) var(--ease-quick),
              color var(--dur-fast) ease;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0) 100%);
  border-radius: var(--radius-pill) var(--radius-pill) 0 0;
  pointer-events: none;
}

.btn:hover {
  transform: translateY(-3px) scale(1.02);
  border-color: rgba(255, 255, 255, 0.65);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.32) 0%, rgba(255, 255, 255, 0.12) 50%, rgba(25, 25, 35, 0.8) 100%);
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.85), 0 0 25px rgba(255, 255, 255, 0.22), inset 0 1px 1px rgba(255, 255, 255, 0.7);
  color: #FFFFFF;
}

.btn:active {
  transform: translateY(0) scale(0.97);
}

.btn--solid {
  background: #FFFFFF !important;
  border-color: transparent !important;
  color: #000000 !important;
  font-weight: 700 !important;
  text-shadow: none !important;
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.9) !important;
}

.btn--solid *,
#contact-whatsapp,
#contact-whatsapp * {
  color: #000000 !important;
  font-weight: 700 !important;
}

.btn--solid:hover,
#contact-whatsapp:hover {
  background: #F0F0F5 !important;
  box-shadow: 0 12px 40px rgba(255, 255, 255, 0.55) !important;
  color: #000000 !important;
}

.btn--ghost {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.18) 0%, rgba(255, 255, 255, 0.05) 100%);
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: #FFFFFF;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.4);
}

.btn--ghost:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.28) 0%, rgba(255, 255, 255, 0.1) 100%);
  border-color: rgba(255, 255, 255, 0.6);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.75), 0 0 20px rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
}

/* ---- Registration Square Markers ---- */
.reg-square {
  position: absolute;
  width: 9px;
  height: 9px;
  background: var(--c-white);
  border-radius: 1px;
  z-index: 10;
  pointer-events: none;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.4);
  opacity: 0.6;
}

.reg-square--left {
  top: 50%;
  left: 20px;
  transform: translateY(-50%);
}

.reg-square--right {
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
}

/* ---- Chips & Badges ---- */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
}

.chip {
  font-family: var(--font-mono);
  font-size: var(--fs-tag);
  color: var(--c-white);
  background: rgba(22, 22, 30, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.5rem 1.15rem;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
  text-shadow: none;
  transition: all var(--dur-fast) var(--ease-quick);
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}

.chip:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.45);
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.18);
  transform: translateY(-2px);
  color: var(--c-white);
}