@import url("https://fonts.googleapis.com/css2?family=Nunito+Sans:wght@200;300;400;600;700&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Alkatra&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  text-decoration: none;
  border: none;
  scroll-behavior: smooth;
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Oxygen,
    Ubuntu,
    Cantarell,
    "Open Sans",
    "Helvetica Neue",
    sans-serif;
}

:root {
  /* Colores */
  --fondo-oscuro: #d9dadf;
  --fondo-oscuro-nvar: #d4a63a;
  --fondo-mas-oscuro: #d4a63a;
  --contraste: #001f3f;
  --negro: #fff;
  --blanco: #000;
  --gris-claro: #cbcbcb;
  --opacidad-baja: 0.1;
  --opacidad-alta: 1;
  --estrellas: 51, 54, 70;
  --fondo-oscuro-letras: --blanco;

  /* Escala Z-Index (Mejora #6) */
  --z-atras: -2;
  --z-fondo: -1;
  --z-normal: 1;
  --z-alto: 10;
  --z-menu: 100;
  --z-modal: 2000;

  --nav-bg: rgba(255, 255, 255, 0.72);
  --nav-border: rgba(255, 255, 255, 0.7);
  --nav-pill: rgba(0, 0, 0, 0.06);
  --nav-shadow: 0 18px 40px rgba(0, 0, 0, 0.12), 0 2px 6px rgba(0, 0, 0, 0.08);
  --nav-accent: rgba(212, 166, 58, 0.32);
  --accent-gold: #d4a63a;
  --accent-ink: #101828;
  --accent-glow: rgba(212, 166, 58, 0.3);
  --button-bg: #d4a63a;
  --button-border: #d4a63a;
  --button-text: #0f172a;
  --button-hover-fill: #14213d;
  --button-hover-text: #d4a63a;
  --surface-card: rgba(255, 255, 255, 0.08);
  --surface-card-strong: rgba(255, 255, 255, 0.12);
  --surface-card-dark: rgba(15, 22, 38, 0.76);
  --footer-bg: linear-gradient(135deg, rgba(212, 166, 58, 0.95), rgba(177, 130, 36, 0.95));
  --footer-text: #0f172a;
  --bg-light-start: #eef3ff;
  --bg-light-end: #4563a3;
  --bg-dark-start: var(--bg-light-end);
  --bg-dark-end: #0b0f1a;
  --particle-color: #1c2a52;
  --surface-bg: rgba(15, 22, 38, 0.96);
  --surface-ink: rgba(15, 22, 38, 0.98);
  --surface-deep: #0b0f1a;
  --text-main: #e8ebf3;
}

.cambiocolor {
  --fondo-oscuro: #58595b;
  --fondo-oscuro-nvar: #4f5052;
  --fondo-mas-oscuro: #58595b;
  --fondo-claro: #f1f3ff;
  --contraste: #8eefd0;
  --negro: #000;
  --blanco: #fff;
  --gris-claro: #cbcbcb;
  --opacidad-baja: 0.1;
  --opacidad-alta: 1;
  --estrellas: 204, 205, 211;
  --fondo-oscuro-letras: #d4a63a;
  --nav-bg: rgba(18, 18, 20, 0.72);
  --nav-border: rgba(255, 255, 255, 0.14);
  --nav-pill: rgba(255, 255, 255, 0.14);
  --nav-shadow: 0 18px 40px rgba(0, 0, 0, 0.45), 0 2px 8px rgba(0, 0, 0, 0.3);
  --nav-accent: rgba(212, 166, 58, 0.32);
  --accent-gold: #d4a63a;
  --accent-ink: #101828;
  --accent-glow: rgba(212, 166, 58, 0.3);
  --button-bg: #d4a63a;
  --button-border: #d4a63a;
  --button-text: #0f172a;
  --button-hover-fill: #14213d;
  --button-hover-text: #d4a63a;
  --surface-card: rgba(255, 255, 255, 0.06);
  --surface-card-strong: rgba(255, 255, 255, 0.1);
  --surface-card-dark: rgba(15, 22, 38, 0.84);
  --footer-bg: linear-gradient(135deg, rgba(212, 166, 58, 0.94), rgba(151, 108, 28, 0.96));
  --footer-text: #101828;
  --particle-color: #b9d2ff;
  --bg-dark-start: var(--bg-light-end);
  --bg-dark-end: #0b0f1a;
  --surface-bg: rgba(15, 22, 38, 0.96);
  --surface-ink: rgba(15, 22, 38, 0.98);
  --surface-deep: #0b0f1a;
  --text-main: #e8ebf3;
}

html {
  font-size: 62.5%;
  overflow-x: hidden;
}

body {
  background: radial-gradient(circle at top right, var(--bg-light-start), var(--bg-light-end) 50%);
  color: var(--blanco);
}

body.cambiocolor {
  background: radial-gradient(circle at top right, var(--bg-dark-start), var(--bg-dark-end) 60%);
  color: var(--blanco);
}

.logo .animate,
#menu-icon .animate,
.home.animated-section .animate {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  background-color: var(--fondo-oscuro);
  z-index: 0;
}

.animate {
  animation: showUp 1s ease forwards;
  animation-delay: calc(0.3s * var(--i));
  transform-origin: bottom;
}

@keyframes showUp {
  0% {
    opacity: 1;
    transform: translateY(100%);
  }

  100% {
    opacity: 0;
    transform: translateY(0);
  }
}

.lang-toggle {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid var(--nav-border);
  background: var(--nav-pill);
  padding: 0;
  cursor: pointer;
}

.lang-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  transform: none;
  transition: transform 0.2s ease;
}

.lang-icon:hover {
  transform: scale(1.08);
}

.header {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: fit-content;
  max-width: calc(100% - 24px);
  min-height: 44px;
  padding: 6px 12px;
  background: var(--nav-bg);
  border: 1px solid var(--accent-gold);
  box-shadow:
    var(--nav-shadow),
    0 0 0 1px var(--nav-accent),
    0 0 18px var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  z-index: var(--z-menu);
  border-radius: 999px;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  transition:
    background 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease;
}

.header.sticky {
  transition: 0.2s;
}

.logo {
  margin-top: 0;
  height: 52px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
}

.logo picture {
  display: flex;
  align-items: center;
}

.logo img,
.logo .logo-mark {
  width: auto;
  height: 52px;
  margin-right: 0;
  max-width: 98px;
  display: block;
}

.imgyo {
  width: 220px;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
}

.navbar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0;
  margin-left: 0;
}

.navbar .solluna,
.navbar .lang-toggle {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid var(--nav-border);
  background: var(--nav-pill);
  color: var(--blanco);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
  box-shadow: inset 0 0 0 1px var(--nav-accent);
}

.update-banner {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%) translateY(12px);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--nav-border);
  background: var(--nav-pill);
  color: var(--blanco);
  box-shadow:
    0 8px 20px rgba(0, 0, 0, 0.2),
    inset 0 0 0 1px var(--nav-accent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 1.4rem;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.update-banner.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
  animation: updateFadeIn 0.7s ease-out;
}

.update-button {
  border-radius: 999px;
  border: 1px solid var(--nav-border);
  background: transparent;
  color: var(--blanco);
  font-weight: 600;
  padding: 6px 12px;
  font-size: 1.3rem;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
  box-shadow: inset 0 0 0 1px var(--nav-accent);
}

.update-button:hover {
  transform: translateY(-1px);
  box-shadow:
    0 8px 16px rgba(0, 0, 0, 0.18),
    inset 0 0 0 1px var(--nav-accent);
}

@media (max-width: 600px) {
  .update-banner {
    width: calc(100% - 24px);
    justify-content: space-between;
    border-radius: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .update-banner,
  .update-button {
    transition: none;
  }

  .update-banner.is-visible {
    animation: none;
  }
}

@keyframes updateFadeIn {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.navbar-actions {
  margin-left: 0.4rem;
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
}

.navbar .solluna i {
  font-size: 2rem;
}

.navbar .solluna:hover,
.navbar .lang-toggle:hover {
  transform: translateY(-1px);
  background: rgba(0, 0, 0, 0.12);
}

.navbar a {
  font-size: 1.5rem;
  color: var(--blanco);
  font-weight: 500;
  text-decoration: none;
  transition: 0.2s ease;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.navbar a:hover,
.navbar a.active {
  background: var(--nav-pill);
  color: var(--blanco);
  box-shadow: inset 0 0 0 1px var(--nav-accent);
}

#menu-icon {
  position: relative;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--blanco);
  cursor: pointer;
  display: none;
  background: var(--nav-pill);
  border: 1px solid var(--nav-border);
  width: 38px;
  height: 38px;
  border-radius: 999px;
  align-items: center;
  justify-content: center;
  margin-left: 0;
  box-shadow: inset 0 0 0 1px var(--nav-accent);
}

.rectangulo {
  width: 60px;
  height: 8px;
  margin-left: 5px;
  flex-shrink: 0;
  background-color: var(--contraste);
}

img {
  transition: transform 0.3s ease;
}

img:hover {
  transform: scale(1.3);
  z-index: var(--z-normal); /* Usando variable */
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
label[for]:focus-visible {
  outline: 3px solid var(--accent-gold);
  outline-offset: 3px;
  border-radius: 8px;
}

/* Scroll Progress Bar */
.scroll-progress-container {
  position: absolute;
  bottom: -2px; /* Justo debajo del borde real */
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 40px); /* Un poco más corta que el ancho total para elegancia */
  height: 4px;
  background: rgba(212, 166, 58, 0.1);
  border-radius: 2px;
  overflow: hidden;
  pointer-events: none;
  z-index: 10;
}

.scroll-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #b88a1a, var(--accent-gold), #f1c40f);
  box-shadow: 0 0 12px var(--accent-gold), 0 0 4px #f1c40f;
  border-radius: 2px;
  transition: width 0.1s linear;
}