/* ==========================================================================
   HUD TÁCTICO — VARIABLES
   ========================================================================== */
:root {
  --bg-black: #05070a;
  --bg-carbon: #12161c;
  --bg-carbon-2: #1a1f27;
  --accent: #00eaff;
  --accent-soft: rgba(0, 234, 255, 0.15);
  --accent-dim: rgba(0, 234, 255, 0.35);
  --accent-glow: rgba(0, 234, 255, 0.55);
  --text-main: #dbe6ea;
  --text-dim: #8fa3ab;
  --text-faint: #56666c;
  --danger: #ff4d5e;
  --ok: #33ffb3;
  --font-head: 'Chakra Petch', 'Segoe UI', sans-serif;
  --font-mono: 'Share Tech Mono', 'Consolas', monospace;
  --radius-cut: 10px;
  --gutter: clamp(16px, 5vw, 64px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg-black);
  color: var(--text-main);
  font-family: var(--font-head);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  padding-top: env(safe-area-inset-top, 0px);
}

img { max-width: 100%; }
[hidden] { display: none !important; }

h1, h2, h3 { font-family: var(--font-head); font-weight: 600; margin: 0; letter-spacing: 0.03em; }
p { margin: 0 0 1em; color: var(--text-dim); }
a { color: inherit; }
.mono { font-family: var(--font-mono); }

/* ==========================================================================
   BACKGROUND FX: GRID / NOISE / SCANLINE
   ========================================================================== */
.hud-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 234, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 234, 255, 0.055) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, rgba(0,0,0,0.55) 55%, transparent 90%);
}

.hud-noise {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

.scanline {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(0, 234, 255, 0.06) 50%,
    transparent 100%
  );
  height: 140px;
  animation: scan-move 7s linear infinite;
  will-change: transform;
}

@keyframes scan-move {
  0% { transform: translateY(-140px); }
  100% { transform: translateY(100vh); }
}

@media (prefers-reduced-motion: reduce) {
  .scanline { animation: none; display: none; }
}

/* ==========================================================================
   CORNER BRACKETS UTILITY (HUD reticle corners, pure CSS)
   ========================================================================== */
.corners {
  position: relative;
  background-image:
    linear-gradient(var(--accent-dim), var(--accent-dim)),
    linear-gradient(var(--accent-dim), var(--accent-dim)),
    linear-gradient(var(--accent-dim), var(--accent-dim)),
    linear-gradient(var(--accent-dim), var(--accent-dim)),
    linear-gradient(var(--accent-dim), var(--accent-dim)),
    linear-gradient(var(--accent-dim), var(--accent-dim)),
    linear-gradient(var(--accent-dim), var(--accent-dim)),
    linear-gradient(var(--accent-dim), var(--accent-dim));
  background-size:
    2px 16px, 16px 2px,
    2px 16px, 16px 2px,
    2px 16px, 16px 2px,
    2px 16px, 16px 2px;
  background-position:
    top left, top left,
    top right, top right,
    bottom left, bottom left,
    bottom right, bottom right;
  background-repeat: no-repeat;
  transition: background-image 0.25s ease;
}

.corners:hover,
.corners:focus-within {
  background-image:
    linear-gradient(var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent)),
    linear-gradient(var(--accent), var(--accent));
}

/* ==========================================================================
   REVEAL ON SCROLL
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   NAV
   ========================================================================== */
.hud-nav {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px var(--gutter);
  background: rgba(5, 7, 10, 0.82);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(0, 234, 255, 0.18);
}

.nav-brand {
  font-family: var(--font-mono);
  color: var(--accent);
  text-decoration: none;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
}

.blink { animation: blink-cursor 1.1s steps(1) infinite; }
@keyframes blink-cursor { 50% { opacity: 0; } }

.nav-links {
  display: flex;
  gap: clamp(14px, 2.5vw, 32px);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  font-weight: 600;
  position: relative;
  padding-bottom: 4px;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.25s ease;
}

.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: transparent;
  border: 1px solid var(--accent-dim);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 18px;
  margin: 0 auto;
  background: var(--accent);
}

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-carbon);
    border-bottom: 1px solid var(--accent-dim);
    padding: 14px var(--gutter) 22px;
    gap: 16px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .nav-links.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
}

/* ==========================================================================
   HEADER / CENTRO DE MANDO
   ========================================================================== */
.hud-header {
  position: relative;
  z-index: 3;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 60px var(--gutter) 80px;
}

.header-frame {
  width: 100%;
  max-width: 900px;
  padding: clamp(24px, 4vw, 48px);
  background: linear-gradient(160deg, rgba(18, 22, 28, 0.7), rgba(5, 7, 10, 0.5));
}

.status-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 8px 2px rgba(51, 255, 179, 0.7);
  animation: pulse-dot 1.6s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.status-text strong { color: var(--ok); }
.status-clock { margin-left: auto; color: var(--accent); }

.eyebrow {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  margin-bottom: 10px;
}

.main-title {
  font-size: clamp(1.9rem, 5.5vw, 3.4rem);
  color: #fff;
  text-transform: uppercase;
  line-height: 1.15;
  min-height: 1.3em;
  text-shadow: 0 0 18px rgba(0, 234, 255, 0.25);
}

.cursor {
  color: var(--accent);
  animation: blink-cursor 0.9s steps(1) infinite;
}

.subtitle {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  margin: 14px 0 6px;
  letter-spacing: 0.03em;
}

.role {
  color: var(--text-dim);
  max-width: 60ch;
  font-size: 0.98rem;
}

/* ==========================================================================
   BUTTONS — scanner sweep hover
   ========================================================================== */
.btn-scan {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding: 14px 26px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-decoration: none;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  overflow: hidden;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.btn-scan::before {
  content: '';
  position: absolute;
  top: 0; left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(0, 234, 255, 0.55), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s ease;
}

.btn-scan:hover,
.btn-scan:focus-visible {
  background: rgba(0, 234, 255, 0.22);
  border-color: var(--accent);
  color: #eafeff;
}

.btn-scan:hover::before { left: 130%; }

.btn-scan .arrow { transition: transform 0.25s ease; }
.btn-scan:hover .arrow { transform: translateX(4px); }

.btn-scan:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* ==========================================================================
   SECTIONS — general
   ========================================================================== */
.section {
  position: relative;
  z-index: 3;
  padding: 100px var(--gutter);
  max-width: 1180px;
  margin: 0 auto;
}

.section-heading {
  margin-bottom: 48px;
}

.tag {
  display: inline-block;
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  border: 1px solid var(--accent-dim);
  padding: 4px 12px;
  margin-bottom: 14px;
}

.section-heading h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: #fff;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 14px;
}

.section-heading h2::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 70px; height: 3px;
  background: var(--accent);
}

/* ==========================================================================
   PERFIL
   ========================================================================== */
.profile-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.profile-text {
  background: var(--bg-carbon);
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid rgba(255,255,255,0.05);
}

.profile-text p {
  color: var(--text-main);
  font-size: 1.02rem;
  margin: 0;
}

.credentials h3 {
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  margin-bottom: 16px;
}

.cred-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cred-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--bg-carbon);
  padding: 14px 18px;
  border: 1px solid rgba(255,255,255,0.05);
  transition: transform 0.2s ease, background 0.2s ease;
}

.cred-list li:hover {
  transform: translateX(4px);
  background: var(--bg-carbon-2);
}

.cred-year { color: var(--accent); font-size: 0.8rem; }
.cred-title { color: #fff; font-weight: 600; }
.cred-sub { color: var(--text-faint); font-size: 0.85rem; }

@media (max-width: 800px) {
  .profile-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   TIMELINE — REGISTRO DE MISIONES
   ========================================================================== */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline-line {
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 9px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), rgba(0, 234, 255, 0.05));
}

.timeline-item {
  position: relative;
  margin-bottom: 34px;
}
.timeline-item:last-child { margin-bottom: 0; }

.timeline-node {
  position: absolute;
  left: -40px;
  top: 22px;
  width: 18px;
  height: 18px;
  background: var(--bg-black);
  border: 2px solid var(--accent);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(0, 234, 255, 0.08);
}

.timeline-card {
  background: var(--bg-carbon);
  padding: 20px 24px;
  border: 1px solid rgba(255,255,255,0.05);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.timeline-card:hover {
  transform: translateX(6px);
}

.tl-date {
  display: inline-block;
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.timeline-card h3 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.timeline-card p { margin: 0; font-size: 0.92rem; }

@media (min-width: 820px) {
  .timeline { padding-left: 0; max-width: 760px; margin: 0 auto; }
  .timeline-line { left: 50%; transform: translateX(-50%); }
  .timeline-item { width: 50%; padding-right: 44px; }
  .timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 44px;
  }
  .timeline-node {
    left: auto;
    right: -49px;
    top: 22px;
  }
  .timeline-item:nth-child(even) .timeline-node {
    left: -49px;
    right: auto;
  }
}

/* ==========================================================================
   HABILIDADES — ARSENAL TÉCNICO
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  margin-bottom: 56px;
}

.radar-wrap {
  background: var(--bg-carbon);
  padding: 20px;
  display: flex;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.05);
}

.radar-wrap svg { width: 100%; height: auto; max-width: 420px; }

.bars-wrap { display: flex; flex-direction: column; gap: 18px; }

.skill-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-main);
  margin-bottom: 6px;
}

.skill-value { color: var(--accent); }

.bar-track {
  height: 8px;
  background: var(--bg-carbon-2);
  border: 1px solid rgba(255,255,255,0.06);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(0, 234, 255, 0.35), var(--accent));
  box-shadow: 0 0 8px rgba(0, 234, 255, 0.5);
  transition: width 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (max-width: 800px) {
  .skills-grid { grid-template-columns: 1fr; }
}

.badges h3 {
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  margin-bottom: 16px;
}

.badge-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.badge-list li {
  background: var(--bg-carbon);
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  border: 1px solid rgba(255,255,255,0.05);
  transition: color 0.2s ease, transform 0.2s ease;
}

.badge-list li:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

/* ==========================================================================
   CONTACTO — CANAL DE TRANSMISIÓN
   ========================================================================== */
.comm-panel {
  max-width: 620px;
  background: var(--bg-carbon);
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid rgba(255,255,255,0.05);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.comm-note {
  color: var(--text-faint);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding-bottom: 14px;
}

.field { display: flex; flex-direction: column; gap: 6px; }

.field label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.field input,
.field textarea {
  background: var(--bg-black);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-main);
  font-family: var(--font-head);
  font-size: 0.95rem;
  padding: 12px 14px;
  resize: vertical;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 234, 255, 0.12);
}

.field.has-error input,
.field.has-error textarea {
  border-color: var(--danger);
}

.field-error {
  min-height: 1em;
  font-size: 0.75rem;
  color: var(--danger);
  font-family: var(--font-mono);
}

.transmit-status {
  min-height: 1.4em;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
}

.transmit-status.sending { color: var(--accent); }
.transmit-status.success { color: var(--ok); }
.transmit-status.error { color: var(--danger); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.hud-footer {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 32px var(--gutter) calc(32px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid rgba(0, 234, 255, 0.12);
}

.hud-footer p {
  color: var(--text-faint);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  margin: 0;
}

/* ==========================================================================
   RESPONSIVE — small screens
   ========================================================================== */
@media (max-width: 480px) {
  .status-bar { font-size: 0.68rem; }
  .status-clock { margin-left: 0; }
  .header-frame { padding: 22px 18px; }
}