/* ============================================================
   REDISEÑO — "sonar / sala de control"
   Se carga DESPUÉS de styles.css y lo sobrescribe.
   Idea: un fondo de red vivo, paquetes de datos viajando, y
   paneles de cristal. Un solo momento protagonista: el arranque
   tipo traceroute. El resto, sobrio.
   ============================================================ */

:root {
  --ink: #050a18;
  --ink-2: #0b1430;
  --line: rgba(120, 160, 255, 0.16);
  --cyan: #3ee0ff;
  --amber: #ffb347;
  --text: #dbe5ff;
  --muted: #8d9bc4;
  --font-display: 'Bricolage Grotesque', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', Consolas, monospace;

  /* remapeo de variables heredadas */
  --primary: #0b5fe0;
  --primary-dark: #0847b0;
  --primary-glow: rgba(255, 179, 71, 0.3);
  --accent: #ff9a2e;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-display);
  background: var(--ink);
  background-image:
    radial-gradient(60vw 50vh at 85% -10%, rgba(62, 224, 255, 0.10), transparent 70%),
    radial-gradient(50vw 50vh at 0% 100%, rgba(255, 179, 71, 0.07), transparent 70%);
  background-attachment: fixed;
  color: var(--text);
  overflow-x: hidden;
}

input, textarea, select, button { font-family: inherit; }
code { font-family: var(--font-mono); }

a { color: var(--cyan); }
a:hover { color: #9cf0ff; }

/* ---------- Capas ---------- */
#net {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.8s ease;
}
body.in-tool #net { opacity: 0.32; }

.container {
  position: relative;
  z-index: 1;
  max-width: 1160px;
  padding: 0 1.25rem 2rem;
}

#wipe {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  overflow: hidden;
}
.wipe-fill, .wipe-ring {
  position: absolute;
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  will-change: transform;
}
.wipe-fill { background: radial-gradient(circle, #0b1430 0%, #050a18 70%); }
.wipe-ring {
  border: 2px solid var(--cyan);
  box-shadow: 0 0 40px 6px rgba(62, 224, 255, 0.55), inset 0 0 40px 2px rgba(62, 224, 255, 0.35);
}

/* ---------- Cabecera: pastilla flotante ---------- */
.header {
  position: sticky;
  top: 0.75rem;
  z-index: 20;
  margin: 0.75rem 0 0;
  padding: 0.5rem 0.6rem 0.5rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(8, 14, 34, 0.62);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  text-align: left;
  flex-wrap: nowrap !important;
}
.logo { display: inline-flex; }
.logo:hover { text-decoration: none; }
.logo-icon { position: relative; display: block; line-height: 0; }
.logo-ping {
  position: absolute;
  inset: 0;
  border-radius: 14px;
  border: 2px solid var(--cyan);
  opacity: 0;
  animation: ping 4.5s cubic-bezier(0.2, 0.6, 0.3, 1) 3.2s infinite;
}
@keyframes ping {
  0%   { transform: scale(1);   opacity: 0.7; }
  60%  { transform: scale(1.7); opacity: 0; }
  100% { transform: scale(1.7); opacity: 0; }
}

.lang-switcher .lang-btn {
  border-color: var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
}
.lang-switcher .lang-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.lang-switcher .lang-btn.active {
  background: var(--amber);
  border-color: var(--amber);
  color: #1a1000;
}

/* ---------- HERO de inicio ---------- */
.tool-selector-section { margin-bottom: 3rem; }

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding: clamp(2.5rem, 7vh, 4.5rem) 0 clamp(2rem, 5vh, 3.25rem);
}

.hero-title {
  font-size: clamp(2.6rem, 5.8vw, 5rem);
  font-weight: 800;
  line-height: 0.96;
  letter-spacing: -0.035em;
  color: #fff;
  background: linear-gradient(100deg, #ffffff 30%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-wrap: balance;
  animation: lock 1.3s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
/* la señal "se engancha": desenfoque y espaciado que se cierra */
@keyframes lock {
  0%   { opacity: 0; filter: blur(16px); letter-spacing: 0.1em; transform: translateX(-18px); }
  55%  { opacity: 1; filter: blur(4px); }
  100% { opacity: 1; filter: blur(0);   letter-spacing: -0.035em; transform: none; }
}

.hero-sub {
  margin-top: 1.4rem;
  max-width: 40ch;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  color: var(--muted);
  animation: rise 0.9s ease 0.7s backwards;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}

/* Traceroute decorativo */
.trace {
  position: relative;
  padding: 1.15rem 1.25rem 1.15rem 1.6rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(8, 14, 34, 0.7);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  animation: rise 0.8s ease 0.3s backwards;
}
.trace::before {            /* hilo que une los saltos */
  content: '';
  position: absolute;
  left: 2.3rem;
  top: 1.6rem;
  bottom: 1.6rem;
  width: 1px;
  background: linear-gradient(var(--line), var(--line));
}
.trace::after {             /* el paquete que baja por el hilo, una sola vez */
  content: '';
  position: absolute;
  left: calc(2.3rem - 3px);
  top: 1.5rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 14px 4px rgba(255, 179, 71, 0.8);
  opacity: 0;
  animation: packet 2.4s cubic-bezier(0.5, 0, 0.4, 1) 0.5s forwards;
}
@keyframes packet {
  0%   { opacity: 1; transform: translateY(0); }
  90%  { opacity: 1; }
  100% { opacity: 0; transform: translateY(calc(var(--trace-h, 150px))); }
}

.trace-row {
  position: relative;
  display: grid;
  grid-template-columns: 1.4rem 1fr auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0;
  animation: hop 0.5s ease var(--d) backwards;
}
@keyframes hop {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: none; }
}
.trace-hop {
  display: grid;
  place-items: center;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.7rem;
  position: relative;
  z-index: 1;
}
.trace-name { color: var(--text); }
.trace-ms {
  color: var(--amber);
  font-variant-numeric: tabular-nums;
  min-width: 6.5ch;
  text-align: right;
}
.trace-final .trace-hop {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  box-shadow: 0 0 0 0 rgba(62, 224, 255, 0.6);
  animation: ok-pulse 2.2s ease 3s 2;
}
.trace-final .trace-name,
.trace-final .trace-ms { color: var(--cyan); }
@keyframes ok-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(62, 224, 255, 0.6); }
  100% { box-shadow: 0 0 0 14px rgba(62, 224, 255, 0); }
}

/* Encabezado del catálogo */
.tool-selector-intro {
  text-align: left;
  margin-bottom: 1.5rem;
  animation: rise 0.8s ease 0.8s backwards;
}
.tool-selector-intro h2 {
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  color: #fff;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.tool-selector-intro p { color: var(--muted); max-width: 60ch; }

/* ---------- Tarjetas de herramientas ---------- */
.tool-grid {
  grid-template-columns: repeat(auto-fill, minmax(262px, 1fr));
  gap: 1rem;
}

.tool-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 1.4rem 1.4rem 1.5rem;
  gap: 0.55rem;
  color: var(--text);
  background: rgba(11, 20, 48, 0.55);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: none;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transition: transform 0.25s ease-out, border-color 0.3s ease, background 0.3s ease;
  animation: online 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) calc(0.9s + var(--i, 0) * 70ms) backwards;
}
@keyframes online {
  from { opacity: 0; translate: 0 18px; }
  to   { opacity: 1; translate: 0 0; }
}

/* foco de luz que sigue al cursor */
.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(280px circle at var(--mx, 50%) var(--my, 50%), rgba(62, 224, 255, 0.17), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
/* borde que se enciende donde está el cursor */
.tool-card::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  padding: 1px;
  border-radius: inherit;
  background: radial-gradient(170px circle at var(--mx, 50%) var(--my, 50%), var(--amber), transparent 70%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.tool-card:hover {
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  box-shadow: none;
  border-color: rgba(255, 179, 71, 0.18);
  background: rgba(14, 26, 60, 0.7);
}
.tool-card:hover::before,
.tool-card:hover::after,
.tool-card:focus-visible::before,
.tool-card:focus-visible::after { opacity: 1; }
.tool-card:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

.tool-card-icon {
  position: relative;
  display: grid;
  place-items: center;
  width: 3.1rem;
  height: 3.1rem;
  margin-bottom: 0.4rem;
  font-size: 1.55rem;
  border-radius: 14px;
  background: rgba(62, 224, 255, 0.07);
  border: 1px solid var(--line);
  transition: transform 0.35s cubic-bezier(0.3, 1.6, 0.5, 1), background 0.3s ease;
}
.tool-card:hover .tool-card-icon {
  transform: translateY(-3px) rotate(-6deg) scale(1.06);
  background: rgba(255, 179, 71, 0.12);
}
/* LED de estado: parpadea en ámbar y se queda en cian = "conectado" */
.tool-card-icon::after {
  content: '';
  position: absolute;
  top: -3px;
  right: -3px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px 2px rgba(62, 224, 255, 0.7);
  animation: led 0.9s steps(1) calc(0.9s + var(--i, 0) * 70ms + 0.4s) backwards;
}
@keyframes led {
  0%   { background: var(--amber); box-shadow: 0 0 10px 2px rgba(255, 179, 71, 0.8); }
  25%  { background: transparent;  box-shadow: none; }
  50%  { background: var(--amber); box-shadow: 0 0 10px 2px rgba(255, 179, 71, 0.8); }
  75%  { background: transparent;  box-shadow: none; }
  100% { background: var(--cyan);  box-shadow: 0 0 10px 2px rgba(62, 224, 255, 0.7); }
}

.tool-card-title {
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #fff;
}
.tool-card-desc { color: var(--muted); font-size: 0.87rem; line-height: 1.55; }

/* ---------- Páginas de herramienta ---------- */
.tool-app {
  max-width: 780px;
  margin: 2.25rem auto 0;
}
.tool-app.active { animation: none; }
.btn-tool-back {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.card {
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background:
    linear-gradient(90deg, var(--cyan), var(--amber)) top / 100% 3px no-repeat,
    #fff;
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(62, 224, 255, 0.08);
}
.card h2 { font-weight: 700; letter-spacing: -0.015em; }

.hero-card {
  background: rgba(11, 20, 48, 0.62);
  border: 1px solid var(--line);
  border-radius: 22px;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: none;
}
.hero-content h2 { font-weight: 700; letter-spacing: -0.02em; }
.hero-content h2 em { color: var(--amber); font-style: normal; }
.feature { border-radius: 14px; }
.feature:hover { transform: none; }
.step-explain-number { background: linear-gradient(135deg, var(--cyan), var(--amber)); color: var(--ink); box-shadow: 0 4px 18px rgba(62, 224, 255, 0.35); }

.step.active .step-number {
  background: var(--amber);
  color: #1a1000;
  border-color: rgba(255, 179, 71, 0.4);
  box-shadow: 0 0 0 4px rgba(255, 179, 71, 0.25);
}
.step-line.active { background: linear-gradient(90deg, var(--amber), var(--cyan)); }

/* Formularios y botones sobre papel claro */
.input-wrapper { border-radius: 12px; }
.input-wrapper:focus-within,
.textarea-input:focus,
.encoding-tab:hover {
  border-color: #ff9f1c;
}
.input-wrapper:focus-within,
.textarea-input:focus { box-shadow: 0 0 0 4px rgba(255, 179, 71, 0.28); }
.encoding-tab.active { background: var(--ink-2); border-color: var(--ink-2); }
.encoding-tab:hover { color: #b86a00; }

.btn-primary {
  background: linear-gradient(135deg, #ffc266, #ff9a2e);
  color: #1a1000;
  font-weight: 700;
  box-shadow: 0 10px 26px -10px rgba(255, 154, 46, 0.85);
}
.btn-primary:hover:not(:disabled) {
  filter: brightness(1.06);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -10px rgba(255, 154, 46, 0.95);
}
.timing-bar-fill { background: linear-gradient(90deg, var(--cyan), var(--amber)); }

/* ---------- Pie ---------- */
.footer-author p { color: var(--muted); }
.footer-author a {
  background: linear-gradient(100deg, var(--cyan), var(--amber));
  -webkit-background-clip: text;
  background-clip: text;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
}
@media (max-width: 520px) {
  .container { padding: 0 0.85rem 2rem; }
  .tool-grid { grid-template-columns: 1fr; }
}
@media (hover: none), (pointer: coarse) {
  .tool-card { transform: none !important; }
}

/* ---------- Movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-delay: 0s !important;
    transition-duration: 0.001s !important;
  }
  html { scroll-behavior: auto; }
  .tool-card { transform: none !important; }
  .trace::after { display: none; }
}