:root{
  --glass-bg: color-mix(in srgb, Canvas 85%, transparent);
  --badge-bg-light: #f1f3f5;
  --badge-text-light: #212529;
  --panel-border: #ced4da;

  --ease-apple: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.2, 0.8, 0.2, 1);
}

.brand-logo{
  width: 26px;
  height: 26px;
  margin-right: 10px;
  display: inline-block;
}

.tech-bg{
  background-image:
    linear-gradient(to right, color-mix(in srgb, CanvasText 7%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, CanvasText 7%, transparent) 1px, transparent 1px);
  background-size: 48px 48px;
}

.glass-nav{
  backdrop-filter: blur(10px);
  background: var(--glass-bg);
}

.brand-dot{
  width: 10px;
  height: 10px;
  border-radius: 999px;
  display: inline-block;
  margin-right: 8px;
  background: currentColor;
}

.hero-card{ border-radius: 18px; }

.tech-panel{
  border: 1px solid var(--panel-border) !important;
}

.avatar{
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 26px;
  border: 1px solid color-mix(in srgb, CanvasText 15%, transparent);
  background: color-mix(in srgb, Canvas 92%, transparent);
}

.tag{
  border: 1px solid #ced4da;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.9rem;
  background-color: var(--badge-bg-light);
  color: var(--badge-text-light);
}

.badge.text-bg-dark-subtle{
  background-color: var(--badge-bg-light) !important;
  color: var(--badge-text-light) !important;
  border: 1px solid #ced4da;
}

#heroBadge{
  background-color: var(--badge-bg-light);
  color: var(--badge-text-light);
  border: 1px solid #ced4da;
  font-weight: 500;
}

/* Enfoque badges */
.stack-badges{
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  max-width: 320px;
}

.stack-badges .badge{
  border: 1px solid var(--panel-border);
  background: color-mix(in srgb, Canvas 92%, transparent);
  color: color-mix(in srgb, CanvasText 82%, transparent);
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 999px;
}

/* micro-motion */
.motion-btn{
  transition:
    transform 180ms var(--ease-soft),
    box-shadow 180ms var(--ease-soft),
    filter 180ms var(--ease-soft);
  will-change: transform, box-shadow;
}

.motion-btn:hover{
  transform: translateY(-2px);
  filter: brightness(1.02);
}

.motion-btn:active{
  transform: translateY(0);
}

.motion-card{
  transition:
    transform 220ms var(--ease-soft),
    box-shadow 220ms var(--ease-soft),
    border-color 220ms var(--ease-soft);
  will-change: transform, box-shadow;
}

.motion-card:hover{
  transform: translateY(-3px);
  box-shadow: 0 14px 34px color-mix(in srgb, CanvasText 12%, transparent);
}

/* accordion */
.tech-accordion .accordion-item{
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  overflow: hidden;
  background: color-mix(in srgb, Canvas 92%, transparent);
  margin-bottom: 12px;
  transition: border-color 220ms var(--ease-soft), box-shadow 220ms var(--ease-soft);
}

.tech-accordion .accordion-item:has(.accordion-collapse.show){
  box-shadow: 0 14px 34px color-mix(in srgb, CanvasText 12%, transparent);
}

.tech-accordion .accordion-button{
  background: transparent;
  box-shadow: none;
  font-weight: 600;
  transition: background 220ms var(--ease-soft);
}

.tech-accordion .accordion-button:not(.collapsed){
  background: color-mix(in srgb, Canvas 88%, transparent);
}

.tech-accordion .accordion-button::after{
  transition: transform 220ms var(--ease-soft);
}

.tech-accordion .accordion-body{
  color: color-mix(in srgb, CanvasText 75%, transparent);
  animation: fadeUp 220ms var(--ease-soft) both;
}

@keyframes fadeUp{
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* scroll reveal */
.reveal{
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms var(--ease-apple), transform 420ms var(--ease-apple);
  will-change: opacity, transform;
}

.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* Intro overlay + slide */
.intro-overlay{
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  padding: 24px;
  background: color-mix(in srgb, Canvas 70%, transparent);
  backdrop-filter: blur(10px);
  transform: translateX(0);
  opacity: 1;
  transition: transform 720ms var(--ease-apple), opacity 420ms ease;
  will-change: transform, opacity;
}

.intro-overlay.is-leaving{
  transform: translateX(-100%);
  opacity: 1;
}

.intro-card{
  width: min(760px, 100%);
  border-radius: 18px;
  border: 1px solid var(--panel-border);
  background: color-mix(in srgb, Canvas 92%, transparent);
  padding: 22px;
  box-shadow: 0 12px 40px color-mix(in srgb, CanvasText 15%, transparent);
}

.intro-top{
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.intro-dot{
  margin-top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #0d6efd;
  box-shadow: 0 0 0 6px color-mix(in srgb, #0d6efd 18%, transparent);
}

.intro-kicker{
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: color-mix(in srgb, CanvasText 55%, transparent);
}

.intro-title{
  font-weight: 800;
  letter-spacing: 0.2px;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  line-height: 1.15;
}

.intro-sub{
  color: color-mix(in srgb, CanvasText 70%, transparent);
  max-width: 62ch;
}

/* App root: entra desde derecha */
.app-root{
  min-height: 100vh;
  transform: translateX(100%);
  opacity: 1;
  transition: transform 720ms var(--ease-apple);
  will-change: transform;
}

.app-root.is-entering{
  transform: translateX(0);
}

.app-hidden{
  display: none;
}

/* Dark mode */
[data-bs-theme="dark"]{
  --badge-bg-light: #2b3035;
  --badge-text-light: #f8f9fa;
  --panel-border: #495057;
}

[data-bs-theme="dark"] .tag,
[data-bs-theme="dark"] #heroBadge,
[data-bs-theme="dark"] .badge.text-bg-dark-subtle{
  border-color: #495057;
}

[data-bs-theme="dark"].tech-bg{
  background-image:
    linear-gradient(to right, color-mix(in srgb, #ffffff 7%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, #ffffff 7%, transparent) 1px, transparent 1px);
}

/* reduce motion */
@media (prefers-reduced-motion: reduce){
  .motion-btn,
  .motion-card,
  .reveal,
  .intro-overlay,
  .app-root,
  .tech-accordion .accordion-body{
    transition: none !important;
    animation: none !important;
  }

  .reveal{
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ================= Language switcher (EN | ES | DE) ================= */
.lang-switch{
  font-weight: 800;
  letter-spacing: 0.02em;
  user-select: none;
}

.lang-switch .lang-btn{
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
  font: inherit;
  cursor: pointer;
  opacity: 0.75;
}

.lang-switch .lang-btn:hover{
  opacity: 1;
}

.lang-switch .lang-btn.active{
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.lang-switch .lang-sep{
  opacity: 0.45;
  padding: 0 8px;
}