:root {
  --bg-dark: #050510;
  --white: #ffffff;
  --text-soft: #d0cee0;
  --text-muted: #9693ad;

  --purple: #b54dff;
  --cyan: #21e6ff;
  --blue: #6577ff;

  --gradient-main: linear-gradient(110deg, #b94cff, #6577ff 50%, #20e6e8);

  --font-main: "Montserrat", sans-serif;
  --header-height: 92px;
  --container-width: 1380px;
  --transition: 0.35s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-width: 280px;
  background: var(--bg-dark);
  color: var(--white);
  font-family: var(--font-main);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 5px;
}

/* ==========================================
         ESTRUCTURA DEL HEADER FIJO
         ========================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;

  background: rgba(5, 5, 16, 0.42);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);

  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);

  transition:
    background var(--transition),
    box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(5, 5, 16, 0.94);
  box-shadow: 0 8px 35px rgba(0, 0, 0, 0.3);
}

.header-container {
  width: min(100% - 48px, var(--container-width));
  height: 100%;
  margin: auto;

  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

/* ==========================================
         LOGO Y MARCA
         ========================================== */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-icon {
  width: 45px;
  height: 45px;

  display: grid;
  place-items: center;

  border: 1px solid rgba(33, 230, 255, 0.7);
  border-radius: 13px;

  background: linear-gradient(
    135deg,
    rgba(181, 77, 255, 0.25),
    rgba(33, 230, 255, 0.12)
  );

  color: var(--cyan);
  font-size: 22px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-text strong {
  font-size: clamp(1.45rem, 2vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -1px;
}

.brand-text strong span {
  background: var(--gradient-main);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.brand-text small {
  margin-top: 7px;
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--text-muted);
}

/* ==========================================
         NAVEGACIÓN ESCRITORIO
         ========================================== */
.main-navigation {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.nav-link {
  position: relative;

  display: inline-flex;
  align-items: center;
  gap: 9px;

  padding: 13px 17px;

  color: var(--text-soft);
  font-size: 13px;
  font-weight: 500;

  border-radius: 12px;

  transition:
    color var(--transition),
    background var(--transition);
}

.nav-link i {
  font-size: 14px;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav-link::after {
  content: "";

  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;

  height: 2px;
  border-radius: 10px;
  background: var(--gradient-main);

  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--white);
}

.nav-link:hover i,
.nav-link.active i {
  color: var(--cyan);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* ==========================================
         BOTÓN DE CUENTA
         ========================================== */
.account-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;

  margin-left: 12px;
  padding: 12px 22px;

  border: 1px solid rgba(33, 230, 255, 0.75);
  border-radius: 50px;

  background: rgba(10, 10, 29, 0.4);

  font-size: 13px;
  font-weight: 600;

  transition:
    background var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
}

.account-button i {
  color: var(--cyan);
  font-size: 16px;
}

.account-button:hover {
  background: rgba(33, 230, 255, 0.12);
  box-shadow: 0 0 25px rgba(33, 230, 255, 0.15);
  transform: translateY(-2px);
}

/* ==========================================
         BOTÓN HAMBURGUESA
         ========================================== */
.menu-toggle {
  display: none;

  width: 45px;
  height: 45px;

  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;

  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;

  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 21px;
  height: 2px;

  border-radius: 5px;
  background: var(--white);

  transition:
    transform var(--transition),
    opacity var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================
         ADAPTACIÓN RESPONSIVE (TABLETS Y MÓVILES)
         ========================================== */
@media (max-width: 1100px) {
  .nav-link {
    padding: 12px 10px;
  }

  .account-button {
    margin-left: 5px;
    padding: 12px 15px;
  }
}

@media (max-width: 800px) {
  :root {
    --header-height: 78px;
  }

  .header-container {
    width: min(100% - 32px, var(--container-width));
  }

  .brand-icon {
    width: 40px;
    height: 40px;
    font-size: 19px;
  }

  .brand-text strong {
    font-size: 1.4rem;
  }

  .brand-text small {
    font-size: 7px;
    letter-spacing: 2px;
  }

  .menu-toggle {
    display: flex;
  }

  .main-navigation {
    position: absolute;

    top: calc(100% + 10px);
    left: 16px;
    right: 16px;

    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 5px;

    padding: 15px;

    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;

    background: rgba(8, 8, 24, 0.98);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);

    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);

    transition:
      opacity var(--transition),
      visibility var(--transition),
      transform var(--transition);
  }

  .main-navigation.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-link {
    width: 100%;
    padding: 15px;
    justify-content: flex-start;
    gap: 13px;
    border-radius: 12px;
  }

  .nav-link::after {
    display: none;
  }

  .nav-link:hover,
  .nav-link.active {
    background: rgba(181, 77, 255, 0.1);
  }

  .account-button {
    justify-content: center;
    margin: 8px 0 0;
    padding: 14px;
  }
}

/* ACCESIBILIDAD */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}