/* ============================================================
   FIBERANDES — Design System & Visual Engine
   Distributed Fiber Optic Sensing (DFOS) · Minería & Infraestructura
   ============================================================ */

:root {
  /* --- Colors: Deep Photonics & Andean Matrix --- */
  --bg:            #060911;
  --bg-alt:        #090E1A;
  --bg-card:       #0D1627;
  --bg-card-hover: #132038;
  --bg-elevated:   #172642;
  --bg-input:      #0B1324;

  --line:          rgba(0, 240, 255, 0.12);
  --line-light:    rgba(255, 255, 255, 0.08);
  --line-strong:   rgba(0, 240, 255, 0.35);

  --fg:            #F0F4FA;
  --fg-1:          #B4C2D9;
  --fg-2:          #71829E;
  --fg-muted:      #4D5C75;

  /* Photonics Laser Accents */
  --cyan:          #00F0FF;
  --cyan-glow:     rgba(0, 240, 255, 0.25);
  --cyan-dim:      rgba(0, 240, 255, 0.08);

  --emerald:       #00FFA3;
  --emerald-glow:  rgba(0, 255, 163, 0.25);
  --emerald-dim:   rgba(0, 255, 163, 0.08);

  --amber:         #FFB020;
  --amber-dim:     rgba(255, 176, 32, 0.12);

  --purple:        #B066FF;
  --purple-dim:    rgba(176, 102, 255, 0.12);

  --danger:        #FF4B55;
  --danger-dim:    rgba(255, 75, 85, 0.15);

  /* Typography */
  --font-display:  'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-body:     'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:     'JetBrains Mono', monospace;

  /* Dimensions */
  --maxw:          1280px;
  --nav-h:         76px;
  --pad:           clamp(20px, 5vw, 64px);
  --r-sm:          6px;
  --r:             12px;
  --r-lg:          18px;
  --r-xl:          24px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
  background: var(--bg);
  color-scheme: dark;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Background Photonics Laser Grid */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 15%, #000 20%, transparent 80%);
          mask-image: radial-gradient(ellipse 90% 70% at 50% 15%, #000 20%, transparent 80%);
  opacity: 0.55;
}

::selection {
  background: var(--cyan);
  color: #060911;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }

/* ---------- Layout Primitives ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--pad);
  position: relative;
  z-index: 1;
}

section { position: relative; z-index: 1; }
.section-pad { padding-block: clamp(80px, 11vw, 150px); }
.divider { height: 1px; background: var(--line-light); width: 100%; }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: #FFFFFF;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-2);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow .idx { color: var(--cyan); font-weight: 700; }
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  display: inline-block;
}

.h-section {
  font-size: clamp(32px, 4.4vw, 54px);
  margin-top: 14px;
  text-wrap: balance;
}

.lead {
  font-size: clamp(17px, 1.4vw, 20px);
  color: var(--fg-1);
  max-width: 66ch;
  margin-top: 18px;
  line-height: 1.6;
}

.section-head {
  margin-bottom: clamp(40px, 6vw, 68px);
  max-width: 860px;
}

/* ---------- Buttons & Pills ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  padding: 13px 26px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  transition: all .2s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn .arr { transition: transform .2s ease; display: inline-block; }
.btn:hover .arr { transform: translateX(4px); }

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), #00B8D9);
  color: #040911;
  border-color: rgba(0, 240, 255, 0.7);
  box-shadow: 0 4px 20px var(--cyan-glow);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #33F4FF, #00C7E6);
  box-shadow: 0 6px 28px rgba(0, 240, 255, 0.45);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid var(--line-strong);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--cyan);
  box-shadow: 0 0 20px var(--cyan-dim);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--fg-1);
  border: 1px solid var(--line-light);
}
.btn-ghost:hover {
  color: #fff;
  border-color: var(--fg-2);
  background: rgba(255, 255, 255, 0.03);
}

.btn-sm { padding: 9px 18px; font-size: 13.5px; }

/* Status pill indicator */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  background: rgba(0, 255, 163, 0.08);
  border: 1px solid rgba(0, 255, 163, 0.3);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--emerald);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--emerald);
  box-shadow: 0 0 8px var(--emerald);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* ============================================================
   NAVBAR
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: all .25s ease;
}
.nav.scrolled {
  background: rgba(7, 11, 19, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand .logo-svg {
  height: 44px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--fg-1);
  padding: 8px 14px;
  border-radius: var(--r-sm);
  transition: all .15s ease;
}
.nav-links a:hover {
  color: #fff;
  background: rgba(0, 240, 255, 0.06);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Language selector */
.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line-light);
  border-radius: var(--r-sm);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 11px;
}
.lang-toggle button {
  background: transparent;
  color: var(--fg-2);
  border: none;
  padding: 6px 10px;
  letter-spacing: 0.06em;
  transition: all .15s ease;
}
.lang-toggle button.active {
  background: var(--cyan);
  color: #040911;
  font-weight: 700;
}
.lang-toggle button:not(.active):hover {
  color: var(--fg);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line-light);
  border-radius: var(--r-sm);
  width: 42px;
  height: 42px;
  color: var(--fg);
  align-items: center;
  justify-content: center;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  padding-bottom: 60px;
  overflow: hidden;
}
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.hero-veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 75% 85% at 30% 50%, rgba(6,9,17,0.3) 0%, var(--bg) 90%),
    linear-gradient(to top, var(--bg) 0%, transparent 40%),
    linear-gradient(to bottom, var(--bg) 0%, transparent 20%);
}
.hero .wrap { position: relative; z-index: 2; }

.hero-content { max-width: 920px; }

.hero-pill-row {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-tag {
  font-size: clamp(38px, 6.2vw, 76px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.hero-tag .gradient-text {
  background: linear-gradient(135deg, #FFFFFF 30%, var(--cyan) 75%, var(--emerald) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-tag .highlight-dfos {
  color: var(--cyan);
  text-shadow: 0 0 35px var(--cyan-glow);
}

.hero-sub {
  margin-top: 24px;
  font-size: clamp(17px, 1.6vw, 21px);
  color: var(--fg-1);
  max-width: 62ch;
  line-height: 1.6;
}

.hero-cta {
  margin-top: 36px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

/* Hero Telemetry & Metrics Ribbon */
.hero-telemetry {
  margin-top: clamp(48px, 7vw, 72px);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  backdrop-filter: blur(12px);
}
.telemetry-cell {
  background: rgba(13, 22, 39, 0.75);
  padding: 18px 22px;
  transition: background .2s ease;
}
.telemetry-cell:hover {
  background: rgba(19, 32, 56, 0.9);
}
.telemetry-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-2);
  display: flex;
  align-items: center;
  gap: 6px;
}
.telemetry-value {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  color: #fff;
  margin-top: 4px;
  letter-spacing: -0.02em;
}
.telemetry-value .unit {
  font-size: 14px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-weight: 500;
  margin-left: 4px;
}
.telemetry-desc {
  font-size: 12.5px;
  color: var(--fg-1);
  margin-top: 4px;
}

/* ============================================================
   COMPARATIVE ARENA: DFOS vs. ESI (DISCRETOS)
   ============================================================ */
.comparison-box {
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  padding: clamp(28px, 4vw, 52px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
}
.comparison-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--emerald), transparent);
}

/* Interactive Simulator Banner */
.sim-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line-light);
}
.sim-title {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sim-modes {
  display: flex;
  gap: 8px;
  background: var(--bg-alt);
  padding: 4px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-light);
}
.sim-mode-btn {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--r-sm);
  border: none;
  background: transparent;
  color: var(--fg-2);
  transition: all .15s ease;
}
.sim-mode-btn.active {
  background: var(--bg-elevated);
  color: #fff;
  border: 1px solid var(--line);
}
.sim-mode-btn[data-sim="dfos"].active {
  color: var(--cyan);
  border-color: rgba(0, 240, 255, 0.4);
}
.sim-mode-btn[data-sim="esi"].active {
  color: var(--amber);
  border-color: rgba(255, 176, 32, 0.4);
}

/* Visual Canvas for the comparison */
.sim-visual {
  position: relative;
  height: 180px;
  background: #04070D;
  border: 1px solid var(--line-light);
  border-radius: var(--r);
  overflow: hidden;
  cursor: crosshair;
}
.sim-visual canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.sim-overlay-hint {
  position: absolute;
  bottom: 12px;
  left: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--fg-2);
  pointer-events: none;
  z-index: 5;
}
.sim-status-banner {
  position: absolute;
  top: 12px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 14px;
  border-radius: var(--r-sm);
  font-weight: 600;
  transition: all .2s ease;
  z-index: 6;
  max-width: calc(100% - 32px);
}
.sim-status-banner.detected {
  background: rgba(0, 255, 163, 0.15);
  color: var(--emerald);
  border: 1px solid var(--emerald);
  backdrop-filter: blur(8px);
}
.sim-status-banner.blindspot {
  background: rgba(255, 75, 85, 0.2);
  color: var(--danger);
  border: 1px solid var(--danger);
  backdrop-filter: blur(8px);
}

/* 3D WebGL Mine Geomechanics Simulator */
.sim-3d-visual {
  position: relative;
  height: 560px;
  background: #03060C;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6);
  cursor: grab;
}
.sim-3d-visual:active {
  cursor: grabbing;
}
.sim-3d-visual canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.sim-3d-telemetry {
  position: absolute;
  bottom: 14px;
  right: 14px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  background: rgba(6, 11, 20, 0.88);
  border: 1px solid var(--line-light);
  border-radius: var(--r-sm);
  padding: 10px 18px;
  backdrop-filter: blur(10px);
  z-index: 5;
}
.sim-tel-cell {
  display: flex;
  flex-direction: column;
}
.sim-tel-cell .l {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.sim-tel-cell .v {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  margin-top: 2px;
}

.sim-3d-legend {
  position: absolute;
  top: 14px;
  left: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(6, 11, 20, 0.82);
  border: 1px solid var(--line-light);
  border-radius: var(--r-sm);
  padding: 10px 14px;
  backdrop-filter: blur(8px);
  z-index: 5;
  pointer-events: none;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-1);
}
.legend-color {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.legend-color.cyan { background: var(--cyan); box-shadow: 0 0 6px var(--cyan); }
.legend-color.blue { background: #3b82f6; box-shadow: 0 0 6px #3b82f6; }
.legend-color.green { background: var(--emerald); box-shadow: 0 0 6px var(--emerald); }
.legend-color.dark { background: #1b434d; border: 1px solid #00f0ff; }
.legend-color.red { background: var(--danger); box-shadow: 0 0 6px var(--danger); }

@media (max-width: 900px) {
  .sim-3d-visual { height: 460px; }
  .sim-3d-telemetry { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .sim-3d-legend { display: none; }
}

/* Comparison side-by-side cards */
.comp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}
.comp-card {
  border-radius: var(--r);
  padding: clamp(22px, 2.5vw, 32px);
  position: relative;
}
.comp-card.discrete {
  background: rgba(255, 176, 32, 0.03);
  border: 1px solid rgba(255, 176, 32, 0.2);
}
.comp-card.dfos {
  background: rgba(0, 240, 255, 0.04);
  border: 1px solid rgba(0, 240, 255, 0.35);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.06);
}
.comp-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  display: inline-block;
  margin-bottom: 12px;
}
.comp-card.discrete .comp-badge {
  background: var(--amber-dim);
  color: var(--amber);
  border: 1px solid rgba(255, 176, 32, 0.3);
}
.comp-card.dfos .comp-badge {
  background: var(--cyan-dim);
  color: var(--cyan);
  border: 1px solid rgba(0, 240, 255, 0.3);
}

.comp-card h3 { font-size: 22px; margin-bottom: 12px; }
.comp-card p { color: var(--fg-1); font-size: 15px; margin-bottom: 20px; }

.comp-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.comp-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14.5px;
  color: var(--fg);
}
.comp-list .icon-x {
  color: var(--danger);
  flex: none;
  margin-top: 2px;
}
.comp-list .icon-check {
  color: var(--emerald);
  flex: none;
  margin-top: 2px;
}

/* ============================================================
   TECNOLOGÍAS: DAS · DSS · DTS
   ============================================================ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(26px, 3vw, 36px);
  position: relative;
  overflow: hidden;
  transition: all .25s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.tech-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6), 0 0 25px var(--cyan-dim);
}
.tech-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}
.tech-acronym {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}
.tech-card[data-tech="das"] .tech-acronym { color: var(--cyan); }
.tech-card[data-tech="dss"] .tech-acronym { color: var(--emerald); }
.tech-card[data-tech="dts"] .tech-acronym { color: var(--purple); }

.tech-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  border: 1px solid var(--line-light);
}
.tech-card[data-tech="das"] .tech-icon-wrap { color: var(--cyan); }
.tech-card[data-tech="dss"] .tech-icon-wrap { color: var(--emerald); }
.tech-card[data-tech="dts"] .tech-icon-wrap { color: var(--purple); }

.tech-name {
  font-size: 18px;
  margin-bottom: 12px;
}
.tech-desc {
  font-size: 14.5px;
  color: var(--fg-1);
  line-height: 1.6;
  margin-bottom: 24px;
}

.tech-specs-box {
  background: var(--bg-alt);
  border-radius: var(--r-sm);
  border: 1px solid var(--line-light);
  padding: 14px 16px;
  margin-bottom: 24px;
}
.tech-spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12.5px;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.tech-spec-row:last-child { border-bottom: none; }
.tech-spec-row .k { color: var(--fg-2); font-family: var(--font-mono); }
.tech-spec-row .v { color: #fff; font-weight: 600; font-family: var(--font-mono); }

.tech-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all .2s ease;
  margin-top: auto;
}
.tech-link:hover {
  color: #fff;
  transform: translateX(4px);
}

/* ============================================================
   APLICACIONES INDUSTRIALES
   ============================================================ */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.app-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all .25s ease;
  display: flex;
  flex-direction: column;
}
.app-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
}
.app-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #000;
}
.app-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.app-card:hover .app-media img {
  transform: scale(1.04);
}
.app-media-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(6, 9, 17, 0.85);
  backdrop-filter: blur(8px);
  padding: 4px 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  text-transform: uppercase;
}

.app-body {
  padding: clamp(24px, 3vw, 32px);
  display: flex;
  flex-direction: column;
  flex: 1;
}
.app-body h3 { font-size: 23px; margin-bottom: 12px; }
.app-body p { color: var(--fg-1); font-size: 15px; margin-bottom: 20px; line-height: 1.6; }

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line-light);
}
.app-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  background: var(--bg-alt);
  border-radius: var(--r-sm);
  color: var(--fg-2);
  border: 1px solid var(--line-light);
}

/* Secondary apps strip (Civil, Ductos, Energía) */
.apps-secondary {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.app-mini-card {
  background: var(--bg-card);
  border: 1px solid var(--line-light);
  border-radius: var(--r);
  padding: 24px;
  transition: all .2s ease;
}
.app-mini-card:hover {
  border-color: var(--cyan);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.app-mini-icon {
  width: 36px;
  height: 36px;
  color: var(--cyan);
  margin-bottom: 16px;
}
.app-mini-card h4 { font-size: 18px; margin-bottom: 8px; }
.app-mini-card p { font-size: 14px; color: var(--fg-1); }

/* ============================================================
   HARDWARE: INTERROGADOR OPTOELECTRÓNICO
   ============================================================ */
.hw-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 5vw, 64px);
  align-items: center;
}
.hw-media {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}
.hw-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.hw-specs {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 28px;
}
.hw-specs li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--line-light);
  align-items: start;
}
.hw-specs li:last-child { border-bottom: 1px solid var(--line-light); }
.hw-specs .ic { width: 20px; height: 20px; color: var(--cyan); margin-top: 2px; }
.hw-specs strong { font-size: 16px; color: #fff; display: block; margin-bottom: 4px; }
.hw-specs span { font-size: 14px; color: var(--fg-1); }

/* ============================================================
   SOFTWARE PLATFORM: FIBERANDES HUB
   ============================================================ */
.hub-banner {
  background:
    radial-gradient(ellipse 80% 60% at 85% 30%, rgba(0, 240, 255, 0.12), transparent 70%),
    var(--bg-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  padding: clamp(32px, 4.5vw, 60px);
  position: relative;
  overflow: hidden;
}
.hub-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.hub-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
}
.hub-feat-item {
  background: var(--bg-alt);
  border: 1px solid var(--line-light);
  border-radius: var(--r);
  padding: 18px;
}
.hub-feat-item h4 { font-size: 15.5px; margin-bottom: 6px; color: #fff; }
.hub-feat-item p { font-size: 13.5px; color: var(--fg-1); }

.hub-mockup {
  background: #04070E;
  border: 1px solid var(--line-strong);
  border-radius: var(--r);
  padding: 20px;
  font-family: var(--font-mono);
}
.mockup-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line-light);
  padding-bottom: 12px;
  margin-bottom: 16px;
}
.mockup-dots { display: flex; gap: 6px; }
.mockup-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--fg-muted); }
.mockup-dot.active { background: var(--cyan); box-shadow: 0 0 6px var(--cyan); }
.mockup-status { font-size: 11px; color: var(--emerald); }

.mockup-waterfall {
  height: 180px;
  background: linear-gradient(180deg, rgba(0,240,255,0.08) 0%, rgba(176,102,255,0.15) 50%, rgba(255,75,85,0.2) 100%);
  border: 1px dashed var(--line-light);
  border-radius: var(--r-sm);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mockup-waterfall-lines {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(0deg, transparent, transparent 15px, rgba(0, 240, 255, 0.15) 15px, rgba(0, 240, 255, 0.15) 16px);
  animation: waterfall-scroll 6s linear infinite;
}
@keyframes waterfall-scroll {
  from { transform: translateY(0); }
  to { transform: translateY(32px); }
}

/* ============================================================
   INTERACTIVE SOLUTION CONFIGURATOR
   ============================================================ */
.configurator-wrap {
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  padding: clamp(28px, 4vw, 48px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.cfg-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}
.cfg-controls {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.cfg-group-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: 12px;
  display: block;
}
.cfg-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.cfg-opt-btn {
  background: var(--bg-alt);
  border: 1px solid var(--line-light);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  color: var(--fg-1);
  text-align: left;
  font-size: 13.5px;
  font-weight: 500;
  transition: all .15s ease;
}
.cfg-opt-btn.active {
  background: var(--bg-elevated);
  border-color: var(--cyan);
  color: #fff;
  box-shadow: 0 0 14px var(--cyan-dim);
}

.cfg-slider-wrap {
  background: var(--bg-alt);
  border: 1px solid var(--line-light);
  border-radius: var(--r-sm);
  padding: 16px;
}
.cfg-slider-head {
  display: flex;
  justify-content: space-between;
  font-size: 13.5px;
  margin-bottom: 10px;
}
.cfg-slider-head .v {
  font-family: var(--font-mono);
  color: var(--cyan);
  font-weight: 700;
}
.cfg-slider {
  width: 100%;
  accent-color: var(--cyan);
  cursor: pointer;
}

.cfg-result-box {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.cfg-res-head {
  border-bottom: 1px solid var(--line-light);
  padding-bottom: 16px;
  margin-bottom: 20px;
}
.cfg-res-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.cfg-res-system {
  font-size: 24px;
  margin-top: 6px;
  color: #fff;
}

.cfg-res-tags {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.cfg-res-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 700;
}
.cfg-res-tag.das { background: var(--cyan-dim); color: var(--cyan); border: 1px solid rgba(0,240,255,0.3); }
.cfg-res-tag.dss { background: var(--emerald-dim); color: var(--emerald); border: 1px solid rgba(0,255,163,0.3); }
.cfg-res-tag.dts { background: var(--purple-dim); color: var(--purple); border: 1px solid rgba(176,102,255,0.3); }

.cfg-res-summary {
  font-size: 14.5px;
  color: var(--fg-1);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(40px, 6vw, 84px);
  align-items: start;
}
.contact-info .big-cta {
  font-size: clamp(30px, 3.4vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.contact-channels {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.channel-row {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 15.5px;
  color: var(--fg-1);
}
.channel-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--r-sm);
  background: var(--bg-card);
  border: 1px solid var(--line-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  flex: none;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  padding: clamp(28px, 4vw, 44px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-field.full { grid-column: 1 / -1; }
.form-field label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.form-field input, .form-field textarea, .form-field select {
  background: var(--bg-input);
  border: 1px solid var(--line-light);
  border-radius: var(--r-sm);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 14px;
  transition: all .15s ease;
  width: 100%;
}
.form-field textarea {
  resize: vertical;
  min-height: 110px;
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
  outline: none;
  border-color: var(--cyan);
  background: var(--bg-elevated);
  box-shadow: 0 0 14px var(--cyan-dim);
}

.form-submit-row {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.form-success-box {
  display: none;
  align-items: center;
  gap: 10px;
  color: var(--emerald);
  font-size: 14.5px;
  font-weight: 500;
  width: 100%;
}
.form-success-box.show { display: flex; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--line-light);
  padding-block: 64px 36px;
  background: var(--bg-alt);
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.footer-brand { max-width: 360px; }
.footer-brand p {
  color: var(--fg-2);
  font-size: 14px;
  margin-top: 18px;
  line-height: 1.6;
}
.footer-cols {
  display: flex;
  gap: clamp(40px, 6vw, 80px);
  flex-wrap: wrap;
}
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 18px;
}
.footer-col a {
  display: block;
  color: var(--fg-1);
  font-size: 14.5px;
  padding: 5px 0;
  transition: color .15s;
}
.footer-col a:hover { color: #fff; }

.footer-bot {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid var(--line-light);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-2);
}

/* ============================================================
   SLIDE-OVER TECHNICAL DRAWER
   ============================================================ */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(4, 7, 13, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease, visibility .3s ease;
  display: flex;
  justify-content: flex-end;
}
.drawer-backdrop.open { opacity: 1; visibility: visible; }

.drawer-panel {
  width: min(680px, 100%);
  height: 100%;
  background: var(--bg-alt);
  border-left: 1px solid var(--line-strong);
  box-shadow: -20px 0 60px rgba(0,0,0,0.8);
  transform: translateX(100%);
  transition: transform .35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  position: relative;
}
.drawer-backdrop.open .drawer-panel { transform: translateX(0); }

.drawer-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--bg-elevated);
  color: var(--fg-1);
  border: 1px solid var(--line-light);
  border-radius: var(--r-sm);
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  transition: all .15s ease;
  z-index: 5;
}
.drawer-close-btn:hover {
  color: #fff;
  border-color: var(--cyan);
}

.drawer-content {
  overflow-y: auto;
  padding: clamp(32px, 5vw, 56px);
  padding-top: 76px;
  height: 100%;
}
.drawer-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}
.drawer-title {
  font-size: clamp(28px, 3.5vw, 38px);
  margin-top: 10px;
  line-height: 1.1;
}
.drawer-lead {
  font-size: 17px;
  color: var(--fg-1);
  margin-top: 14px;
  line-height: 1.6;
}
.drawer-specs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
}
.drawer-specs-table th, .drawer-specs-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line-light);
}
.drawer-specs-table th {
  font-family: var(--font-mono);
  color: var(--fg-2);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.drawer-specs-table td { color: var(--fg); }
.drawer-specs-table tr:hover td { background: rgba(0, 240, 255, 0.03); }

/* ============================================================
   WHATSAPP FAB
   ============================================================ */
.wa-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 150;
  display: inline-flex;
  align-items: center;
  height: 56px;
  width: 56px;
  background: #111B2E;
  color: #fff;
  border: 1px solid rgba(37, 211, 102, 0.4);
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  transition: all .3s cubic-bezier(0.16, 1, 0.3, 1);
}
.wa-fab-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #25D366;
  flex: none;
}
.wa-fab-label {
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  transform: translateX(-10px);
  transition: all .25s ease;
  white-space: nowrap;
  padding-right: 20px;
}
.wa-fab:hover {
  width: 180px;
  background: #15243D;
  border-color: #25D366;
  box-shadow: 0 10px 35px rgba(37, 211, 102, 0.3);
}
.wa-fab:hover .wa-fab-label {
  opacity: 1;
  transform: translateX(0);
}

/* Scroll reveal helper */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .65s cubic-bezier(0.16, 1, 0.3, 1), transform .65s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   MOBILE RESPONSIVENESS
   ============================================================ */
@media (max-width: 1024px) {
  .hero-telemetry { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: 1fr; }
  .apps-grid { grid-template-columns: 1fr; }
  .apps-secondary { grid-template-columns: 1fr; }
  .hw-layout { grid-template-columns: 1fr; }
  .hub-grid { grid-template-columns: 1fr; }
  .cfg-steps { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-right .btn-primary { display: none; }
  .comp-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .hero-telemetry { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .contact-form { grid-template-columns: 1fr; }
  .cfg-options-grid { grid-template-columns: 1fr; }
  .wa-fab { right: 16px; bottom: 16px; }
}

/* Mobile dropdown navigation menu */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: var(--bg);
  padding: 24px var(--pad);
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  padding-block: 12px;
  border-bottom: 1px solid var(--line-light);
}

/* ============================================================
   SCIENTIFIC EVIDENCE & PAPERS SECTION
   ============================================================ */
.science-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.science-card {
  background: var(--bg-card);
  border: 1px solid var(--line-light);
  border-radius: var(--r-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all .3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}
.science-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  transition: opacity .3s ease;
}
.science-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: 0 12px 36px rgba(0, 240, 255, 0.08);
}
.science-card:hover::before {
  opacity: 1;
}

.science-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 18px;
  gap: 12px;
  flex-wrap: wrap;
}
.science-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.25);
  color: var(--cyan);
  font-weight: 600;
}
.science-badge.copper {
  background: rgba(226, 125, 96, 0.08);
  border-color: rgba(226, 125, 96, 0.3);
  color: #E27D60;
}
.science-badge.emerald {
  background: rgba(0, 255, 163, 0.08);
  border-color: rgba(0, 255, 163, 0.3);
  color: var(--emerald);
}
.science-badge.purple {
  background: rgba(176, 102, 255, 0.08);
  border-color: rgba(176, 102, 255, 0.3);
  color: var(--purple);
}

.science-stat {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: #FFFFFF;
}

.science-title {
  font-size: 20px;
  margin-bottom: 12px;
  color: #fff;
  line-height: 1.3;
}
.science-text {
  font-size: 14.5px;
  color: var(--fg-1);
  line-height: 1.6;
  margin-bottom: 20px;
}
.science-footnote {
  padding-top: 14px;
  border-top: 1px solid var(--line-light);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-2);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Scientific Comparison Matrix Table */
.science-table-wrap {
  margin-top: 54px;
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  overflow-x: auto;
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}
.science-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}
.science-table th,
.science-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--line-light);
}
.science-table th {
  background: rgba(13, 22, 39, 0.95);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.science-table th:nth-child(2) {
  color: var(--fg-1);
}
.science-table th:nth-child(3) {
  color: var(--cyan);
  background: rgba(0, 240, 255, 0.05);
  border-bottom: 2px solid var(--cyan);
}
.science-table tr:last-child td {
  border-bottom: none;
}
.science-table td:nth-child(1) {
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
}
.science-table td:nth-child(2) {
  color: var(--fg-2);
}
.science-table td:nth-child(3) {
  color: var(--fg);
  background: rgba(0, 240, 255, 0.03);
  font-weight: 500;
}
.science-table td strong {
  color: var(--cyan);
}

@media (max-width: 900px) {
  .science-grid {
    grid-template-columns: 1fr;
  }
}