/* Importación de fuentes desde Google Fonts */
@import url("https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100..900;1,100..900&display=swap");
/* Estilos globales */
* {
  margin: 0;
}

html {
  scroll-behavior: smooth; /* desplazamiento suave al hacer clic en enlaces internos */
  background-color: var(--light-bg);
  font-family: "Montserrat", sans-serif;
}

/* variables de colores */
:root {
  --color-principal: #25a3ff;
  --text-color: #131b2e;
  --text-secundary: #404753;
  --text-pills: #57657a;
  --text-pills-dark: #447fb5;
  --dark-text-color: #e2e2e6;
  --dark-text-secundary: #c4c6cf;
  --light-bg: #faf8ff;
  --dark-bg: #0f1115;
  --light-card-bg: #f2f3ff;
  --light-pills: #d5e3fc;
  --dark-card-bg: #1a1c1e;
  --dark-pills: #33353a;
  --light-bg-header: #efeff2;
  --dark-bg-header: #101216;
  --light-header-border: #c0c7d5;
  --dark-header-border: #1b1e22;
  --btn-gradient: linear-gradient(
    144deg,
    rgba(77, 171, 255, 1) 0%,
    rgba(37, 99, 235, 1) 100%
  );
}

/* Estilos Barra de navegación */
header {
  width: fit-content;
  padding: 0.7rem 2.1rem;
  border-radius: 12px;
  background: rgba(239, 239, 242, 0.45);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid var(--light-header-border);
  color: var(--color-texto);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin: 0.8rem auto;
  box-shadow: rgba(0, 0, 0, 0.095) 1px 1px 2px 1px;
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
}

header nav {
  display: flex;
  gap: 1.5rem;
  width: fit-content;
}

header .mobile-menu {
  display: none;
  background-color: transparent;
}

header .mobile-links {
  display: none;
  color: var(--text-color);
}

header nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: all 0.5s ease-in-out;
}

header nav a:hover {
  scale: 1.1;
  color: var(--color-principal);
}

#navbar .active {
  color: var(--color-principal);
  font-weight: 700;
}

/* Estilos Darkmode Button */
.modes-btn {
  display: flex;
  justify-content: center;
  align-items: center;
  border: none;
  background: var(--light-card-bg);
  box-shadow: rgba(0, 0, 0, 0.095) 1px 1px 2px 1px;
  border-radius: 12px;
  padding: 0.1rem 0.35rem;
  cursor: pointer;
  transition: all 0.5s ease-in-out;
}

.modes-btn:hover {
  scale: 1.07;
}

.modes-btn .lightmode.active {
  display: none;
}

.modes-btn .darkmode.active {
  display: none;
}

/* --- Dark Mode --- */
.dark header {
  background-color: var(--dark-header-border);
  border: 1px solid var(--dark-header-border);
  color: var(--dark-text-color);

  box-shadow: rgba(190, 190, 190, 0.095) 1px 1px 2px 1px;
}

.dark header nav a {
  text-decoration: none;
  color: var(--dark-text-color);
  font-weight: 500;
  transition: all 0.5s ease-in-out;
}

.dark .modes-btn {
  background: var(--dark-card-bg);
  box-shadow: rgba(85, 85, 85, 0.095) 1px 1px 2px 1px;
}

.dark header .mobile-menu {
  color: var(--dark-text-color);
}

.dark .mobile-links {
  background: var(--dark-bg-header);
  border: 1px solid var(--dark-header-border);
  box-shadow: rgba(0, 0, 0, 0.15) 0 8px 20px;
}

.mobile-links a {
  color: var(--dark-text-color);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  header {
    max-width: 20rem;
    width: calc(100% - 1rem);
    padding: 0.7rem 1rem;
    gap: 1rem;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
  }

  header nav {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  header nav a {
    font-size: 0.95rem;
    display: none;
  }

  header .mobile-menu {
    display: flex;
    border: none;
    font-size: 1.3rem;
    background-color: transparent;
  }

  .mobile-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    right: 0;
    width: 16rem;
    padding: 1rem;
    margin-top: 0.5rem;
    background: var(--light-bg-header);
    border: 1px solid var(--light-header-border);
    border-radius: 12px;
    box-shadow: rgba(0, 0, 0, 0.15) 0 8px 20px;
    z-index: 2000;
  }

  .mobile-links.active {
    display: flex;
  }

  .mobile-links a {
    display: flex;
    text-decoration: none;
    color: var(--text-color);
    padding: 0.7rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  }

  .mobile-links a:last-child {
    border-bottom: none;
  }
}