/* ═══════════════════════════════════════════
   AGUASENS — Design System
   ═══════════════════════════════════════════ */

/* ─── VARIABLES ─── */
:root {
  /* Navy-Blue palette (matching AguaSens logo) */
  --verde-oscuro: #152238;
  --verde-medio: #2a5a8f;
  --verde-vivo: #3472B5;
  --verde-claro: #5a9bd5;
  --verde-pale: #d0e3f5;
  --verde-natural: #2E7D32;
  --verde-natural-claro: #4CAF50;
  --tierra: #8b6f4e;
  --ocre: #d4a647;
  --crema: #f0f4f8;
  --blanco: #f8fafc;
  --negro: #0f1219;
  --gris: #5a6577;
  --gris-claro: #e2e8f0;

  --font-display: 'Playfair Display', serif;
  --font-body: 'Barlow', sans-serif;
  --font-condensed: 'Barlow Condensed', sans-serif;

  --header-h: 100px;
  --max-w: 1200px;
  --radius: 8px;
  --radius-lg: 16px;

  --shadow-soft: 0 2px 12px rgba(21,34,56,.08);
  --shadow-card: 0 4px 24px rgba(21,34,56,.12);
  --shadow-lift: 0 8px 32px rgba(21,34,56,.16);

  --transition: .3s cubic-bezier(.4,0,.2,1);
}

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
html, body {
  overflow-x: hidden;
  width: 100%;
  position: relative;
}
body {
  font-family: var(--font-body);
  background: var(--blanco);
  color: var(--negro);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ─── UTILITY ─── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section-label {
  font-size: 14px; font-weight: 600; letter-spacing: .14em;
  text-transform: uppercase; color: var(--verde-medio); margin-bottom: 12px;
}
.section-label--light { color: var(--verde-claro); }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ═══════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════ */
.header {
  position: fixed; top: 0 !important; left: 0 !important; 
  width: 100%; z-index: 1000;
  height: var(--header-h);
  display: flex; align-items: center;
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
  will-change: transform;
  backface-visibility: hidden;
  padding-top: env(safe-area-inset-top);
}
.header--scrolled {
  background: rgba(21,34,56,.94);
  backdrop-filter: blur(16px);
  box-shadow: 0 2px 20px rgba(0,0,0,.18);
}
.header .container {
  display: flex; align-items: center; justify-content: space-between; width: 100%;
}
.header-brand {
  display: flex; align-items: center; gap: 10px;
}
.header-brand__icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,.12); display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.header-logo {
  height: 64px; width: auto; display: block;
  transition: height var(--transition);
}
.header--scrolled .header-logo {
  height: 54px;
}
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  font-size: 15px; font-weight: 500; color: rgba(255,255,255,.7);
  padding: 8px 14px; border-radius: 6px; transition: all var(--transition);
}
.nav a:hover, .nav a.active { color: #fff; background: rgba(255,255,255,.1); }
.nav a.nav-cta {
  background: var(--verde-vivo); color: #fff; font-weight: 600;
  padding: 8px 20px; margin-left: 8px;
}
.nav a.nav-cta:hover { background: var(--verde-claro); color: var(--negro); }

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; z-index: 200; }
.hamburger span {
  width: 24px; height: 2px; background: #fff; border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile nav */
.mobile-nav {
  display: none; position: fixed; inset: 0; z-index: 150;
  background: rgba(21, 36, 99, 0.97); backdrop-filter: blur(20px);
  flex-direction: column; align-items: center; justify-content: center; gap: 8px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 18px; font-weight: 500; color: rgba(255,255,255,.8);
  padding: 14px 32px; border-radius: 8px; transition: all var(--transition);
}
.mobile-nav a:hover { color: #fff; background: rgba(255,255,255,.1); }

/* ═══════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════ */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  background: url('../img/hero-bg.webp') center/cover no-repeat; 
  overflow: hidden;
  max-width: 100%;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgb(0 0 0 / 65%), rgb(12 16 23 / 59%));
  pointer-events: none;
}

.hero__circle {
  position: absolute; border-radius: 50%; border: 1px solid rgba(255,255,255,.05);
  pointer-events: none;
  overflow: hidden;
}
.hero__circle--1 { width: 600px; height: 600px; top: -200px; right: -150px; }
.hero__circle--2 { width: 400px; height: 400px; bottom: -100px; left: -100px; }
.hero .container { position: relative; z-index: 2; padding-top: 120px; padding-bottom: 80px; display: flex; justify-content: center; width: 100%; }
.hero__content { max-width: 720px; text-align: center; display: flex; flex-direction: column; align-items: center; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.08); border: .5px solid rgba(255,255,255,.15);
  border-radius: 100px; padding: 6px 16px; margin-bottom: 24px;
}
.hero__eyebrow-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--verde-claro);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.7); }
}
.hero__eyebrow span {
  font-size: 11px; font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; color: rgba(255,255,255,.7);
}
.hero__title {
  font-family: var(--font-display); font-size: clamp(40px, 6vw, 72px);
  font-weight: 900; line-height: .92; color: #fff; margin-bottom: 10px;
}
.hero__title .accent { color: var(--verde-claro); display: block; }
.hero__subtitle {
  font-size: 18px; color: rgba(255,255,255,.6); font-weight: 300;
  line-height: 1.7; max-width: 440px; margin-bottom: 36px;
}
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 15px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  padding: 14px 32px; border-radius: var(--radius); transition: all var(--transition);
}
.btn--primary { background: var(--verde-vivo); color: #fff; }
.btn--primary:hover { background: var(--verde-claro); color: var(--negro); transform: translateY(-2px); box-shadow: var(--shadow-card); }
.btn--outline { border: 1.5px solid rgba(255,255,255,.3); color: rgba(255,255,255,.9); }
.btn--outline:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.5); }
.btn--dark { background: var(--verde-oscuro); color: var(--verde-claro); }
.btn--dark:hover { background: var(--negro); }

/* ─── STATS BAR ─── */
.stats-bar {
  background: var(--negro); position: relative; z-index: 2;
}
.stats-bar__grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
}
.stat {
  padding: 20px 0; text-align: center;
  border-right: .5px solid rgba(255,255,255,.07);
}
.stat:last-child { border-right: none; }
.stat__num {
  font-family: var(--font-condensed); font-size: 36px; font-weight: 700;
  color: var(--verde-claro); line-height: 1; letter-spacing: -.01em;
}
.stat__label {
  font-size: 13px; color: rgba(255,255,255,.4); text-transform: uppercase;
  letter-spacing: .08em; margin-top: 4px;
}

/* ═══════════════════════════════════════════
   INTRO
   ═══════════════════════════════════════════ */
.intro {
  padding: 72px 0; background: var(--crema);
  border-bottom: .5px solid #d0d8e4;
}
.intro__grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
}
.intro__text p {
  font-size: 17px; color: var(--negro); line-height: 1.8; max-width: 540px;
}
.intro__text strong { color: var(--verde-medio); font-weight: 600; }
.intro__product {
  background: var(--verde-medio); border-radius: var(--radius-lg);
  padding: 28px 32px; display: flex; align-items: center; gap: 18px;
}
.intro__product-icon {
  width: 52px; height: 52px; background: rgba(255,255,255,.14);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 24px; flex-shrink: 0;
}
.intro__product strong {
  font-family: var(--font-condensed); font-size: 15px; font-weight: 700;
  color: #fff; letter-spacing: .04em; text-transform: uppercase; display: block;
}
.intro__product p { font-size: 13px; color: rgba(255,255,255,.72); margin-top: 4px; line-height: 1.5; }

/* ═══════════════════════════════════════════
   FEATURES
   ═══════════════════════════════════════════ */
.features { padding: 80px 0; background: var(--blanco); }
.features__grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 8px;
}
.feature {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 24px; border: .5px solid var(--gris-claro); border-radius: var(--radius);
  transition: all var(--transition);
}
.feature:hover {
  border-color: var(--verde-pale); box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}
.feature__num {
  font-family: var(--font-display); font-size: 40px; font-weight: 700;
  color: var(--verde-medio); line-height: 1; flex-shrink: 0; margin-top: -2px;
}
.feature h3 {
  font-size: 18px; font-weight: 600; color: var(--negro);
  margin-bottom: 6px; letter-spacing: -.01em;
}
.feature p { font-size: 15px; color: var(--gris); line-height: 1.55; }

/* ═══════════════════════════════════════════
   SENSORS / NOVEDAD
   ═══════════════════════════════════════════ */
.sensores {
  padding: 80px 0; background: var(--verde-oscuro);
  position: relative; overflow: hidden;
}
.sensores::after {
  content: ''; position: absolute; width: 500px; height: 500px;
  border-radius: 50%; border: 1px solid rgba(255,255,255,.04);
  top: -200px; right: -150px; pointer-events: none;
}
.sensores__layout {
  display: grid; grid-template-columns: 1fr 2.5fr; gap: 40px; align-items: center;
  position: relative; z-index: 1;
}
.sensores__app-image {
  border-radius: 20px; overflow: hidden; box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  border: 4px solid rgba(255,255,255,0.2); margin: 0 auto;
  max-width: 280px;
  transform: rotate(-2deg);
  transition: transform var(--transition);
}
.sensores__app-image:hover { transform: rotate(0) scale(1.02); z-index: 10; }
.sensores__app-image img { width: 100%; display: block; }

.sensores__images-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}
.sensores__app-image--second {
  transform: rotate(2deg);
  position: relative;
  z-index: 2;
}
.sensores__app-image--second:hover {
  transform: rotate(0) scale(1.02);
}

.sensores__grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
}
.sensor-card {
  background: rgba(255,255,255,.05); border: .5px solid rgba(255,255,255,.12);
  border-radius: var(--radius); padding: 28px 24px;
  transition: all var(--transition);
}
.sensor-card:hover { background: rgba(255,255,255,.08); transform: translateY(-4px); }
.sensor-card__icon { font-size: 32px; margin-bottom: 14px; display: block; }
.sensor-card h3 {
  font-family: var(--font-condensed); font-size: 22px; font-weight: 700;
  color: #fff; letter-spacing: .03em; margin-bottom: 10px; text-transform: uppercase;
}
.sensor-card p { font-size: 15px; color: rgba(255,255,255,.65); line-height: 1.6; }

/* THI scale */
.thi-scale { display: flex; gap: 6px; margin-top: 16px; }
.thi-item { flex: 1; border-radius: 4px; padding: 8px 6px; text-align: center; }
.thi-item .thi-label {
  font-size: 11px; font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase; display: block; margin-bottom: 2px;
}
.thi-item .thi-val { font-family: var(--font-condensed); font-size: 16px; font-weight: 700; }
.thi-azul      { background: rgba(52,114,181,.25); }
.thi-azul .thi-label, .thi-azul .thi-val { color: #5a9bd5; }
.thi-verde   { background: rgba(46,125,50,.25); }
.thi-verde .thi-label, .thi-verde .thi-val { color: var(--verde-natural-claro); }
.thi-amarillo { background: rgba(212,166,71,.3); }
.thi-amarillo .thi-label, .thi-amarillo .thi-val { color: var(--ocre); }
.thi-naranja  { background: rgba(200,120,60,.3); }
.thi-naranja .thi-label, .thi-naranja .thi-val { color: #e0904a; }
.thi-rojo     { background: rgba(200,70,70,.3); }
.thi-rojo .thi-label, .thi-rojo .thi-val { color: #e07070; }

/* ═══════════════════════════════════════════
   ROI
   ═══════════════════════════════════════════ */
.roi { padding: 80px 0; background: var(--crema); }
.roi__grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 20px;
}
.roi-card {
  background: var(--blanco); border: .5px solid #ddd8cc;
  border-radius: var(--radius); padding: 32px 20px; text-align: center;
  transition: all var(--transition);
}
.roi-card:hover { box-shadow: var(--shadow-card); transform: translateY(-4px); }
.roi-card__num {
  font-family: var(--font-display); font-size: 56px; font-weight: 700;
  color: var(--verde-oscuro); line-height: 1; margin-bottom: 10px;
}
.roi-card__desc { font-size: 16px; color: var(--gris); line-height: 1.5; }

/* ═══════════════════════════════════════════
   SPECS
   ═══════════════════════════════════════════ */
.specs { padding: 80px 0; background: var(--blanco); }
.specs__grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 16px;
}
.spec-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 0; border-bottom: .5px solid var(--gris-claro);
}
.spec-item__dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--ocre); flex-shrink: 0;
}
.spec-item span { font-size: 16px; color: var(--gris); line-height: 1.4; }

/* ═══════════════════════════════════════════
   ECONOMÍA
   ═══════════════════════════════════════════ */
.economia {
  padding: 80px 0;
  background: var(--crema);
  position: relative; overflow: hidden;
}
.economia::before {
  content: '';
  position: absolute; width: 500px; height: 500px;
  border-radius: 50%; background: radial-gradient(circle, rgba(52,114,181,.06) 0%, transparent 70%);
  top: -150px; left: -100px; pointer-events: none;
}
.economia::after {
  content: '';
  position: absolute; width: 400px; height: 400px;
  border-radius: 50%; background: radial-gradient(circle, rgba(220,80,80,.04) 0%, transparent 70%);
  bottom: -100px; right: -80px; pointer-events: none;
}
.economia .section-label { color: var(--verde-medio); position: relative; z-index: 1; }
.economia__heading {
  font-family: var(--font-display); font-size: clamp(28px, 4vw, 46px);
  font-weight: 900; color: var(--verde-oscuro); margin-bottom: 12px; position: relative; z-index: 1;
}
.economia__sub {
  font-size: 17px; color: var(--gris); max-width: 560px;
  margin-bottom: 48px; line-height: 1.7; position: relative; z-index: 1;
}

/* Bloque (inversión / pérdidas) */
.eco-block { margin-bottom: 16px; position: relative; z-index: 1; }
.eco-block__label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  padding: 8px 18px; border-radius: 100px; margin-bottom: 20px;
}
.eco-block__label--verde {
  background: rgba(42,90,143,.1); color: var(--verde-medio);
  border: .5px solid rgba(42,90,143,.2);
}
.eco-block__label--rojo {
  background: rgba(200,70,70,.08); color: #c04040;
  border: .5px solid rgba(200,70,70,.2);
}

/* Grid de tarjetas económicas */
.eco-cards {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}

/* Tarjeta base */
.eco-card {
  background: #fff;
  border: 1px solid var(--gris-claro);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex; flex-direction: column; gap: 12px;
  transition: all var(--transition);
  box-shadow: var(--shadow-soft);
}
.eco-card:hover {
  border-color: var(--verde-pale);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}
.eco-card--danger {
  border-color: rgba(200,70,70,.15);
  background: #fff8f8;
}
.eco-card--danger:hover { border-color: rgba(200,70,70,.3); }

.eco-card__body { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.eco-card__title {
  font-family: var(--font-condensed); font-size: 14px; font-weight: 700;
  color: var(--gris); text-transform: uppercase; letter-spacing: .06em;
}
.eco-card__price {
  font-family: var(--font-display); font-size: clamp(24px, 2.8vw, 34px);
  font-weight: 900; color: var(--verde-oscuro); line-height: 1.1;
}
.eco-card__equiv {
  font-size: 14px; color: var(--gris); line-height: 1.6;
  margin-top: 4px;
}
.eco-card__equiv strong { color: var(--verde-medio); }
.eco-card__ref {
  display: block; margin-top: 6px; font-size: 12px;
  color: #aaa; font-style: italic;
}
.eco-card__ref strong { color: var(--verde-vivo); font-style: normal; }

/* VS separador */
.eco-vs {
  text-align: center; font-family: var(--font-display); font-size: 42px;
  font-weight: 900; color: rgba(21, 58, 70, 0.76); letter-spacing: .2em;
  margin: 8px 0 24px; position: relative; z-index: 1;
}
.eco-vs::before, .eco-vs::after {
  content: ''; position: absolute; top: 50%; width: calc(50% - 60px);
  height: 1px; background: var(--gris-claro);
}
.eco-vs::before { left: 0; }
.eco-vs::after { right: 0; }

/* Conclusión */
.eco-conclusion {
  margin-top: 40px; position: relative; z-index: 1;
}
.eco-conclusion__inner {
  display: flex; gap: 24px; align-items: flex-start;
  background: var(--verde-oscuro);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  box-shadow: var(--shadow-card);
}
.eco-conclusion__icon { font-size: 40px; line-height: 1; flex-shrink: 0; }
.eco-conclusion__inner h3 {
  font-family: var(--font-display); font-size: 22px; font-weight: 700;
  color: #fff; margin-bottom: 10px;
}
.eco-conclusion__inner p {
  font-size: 16px; color: rgba(255,255,255,.7); line-height: 1.75;
}
.eco-conclusion__inner p strong { color: var(--verde-claro); }

/* Responsivo economía */
@media (max-width: 1024px) {
  .eco-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .eco-cards { grid-template-columns: 1fr; }
  .eco-conclusion__inner { flex-direction: column; gap: 16px; padding: 24px 20px; }
}

/* Specs dentro de intro */
.specs-inline { margin-top: 0; }

/* ═══════════════════════════════════════════
   CÓMO FUNCIONA
   ═══════════════════════════════════════════ */
.como-funciona {
  padding: 80px 0;
  background: var(--blanco);
  position: relative;
}
.como-funciona__heading {
  font-family: var(--font-display); font-size: clamp(28px, 4vw, 42px);
  font-weight: 900; color: var(--verde-oscuro); margin-bottom: 40px;
}
.como-funciona__grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.paso {
  background: var(--crema); border-radius: var(--radius-lg);
  padding: 36px 28px; text-align: center; position: relative;
  border: .5px solid #ddd8cc; transition: all var(--transition);
}
.paso:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.paso__num {
  position: absolute; top: -16px; left: 50%; transform: translateX(-50%);
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--verde-vivo); color: #fff;
  font-family: var(--font-condensed); font-size: 16px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(61,158,95,.3);
}
.paso__icon {
  color: var(--verde-medio); margin-bottom: 16px;
  display: flex; align-items: center; justify-content: center;
}
.paso h3 {
  font-size: 18px; font-weight: 700; color: var(--verde-oscuro);
  margin-bottom: 8px;
}
.paso p {
  font-size: 15px; color: var(--gris); line-height: 1.6;
}

@media (max-width: 768px) {
  .como-funciona__grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ═══════════════════════════════════════════
   TOOLS SECTION
   ═══════════════════════════════════════════ */
.tools {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--verde-oscuro) 0%, #0d1b33 100%);
  position: relative; overflow: hidden;
}
.tools::before {
  content: ''; position: absolute; width: 400px; height: 400px;
  border-radius: 50%; background: rgba(91,109,222,.08);
  top: -100px; right: -100px; pointer-events: none;
}
.tools .section-label { color: var(--verde-claro); }
.tools__heading {
  font-family: var(--font-display); font-size: clamp(28px, 4vw, 40px);
  font-weight: 700; color: #fff; margin-bottom: 8px;
}
.tools__sub { font-size: 17px; color: rgba(255,255,255,.55); margin-bottom: 40px; max-width: 500px; }
.tools__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; position: relative; z-index: 1; }
.tool-card {
  background: rgba(255,255,255,.07); border: .5px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg); padding: 36px 32px;
  transition: all var(--transition);
}
.tool-card:hover { background: rgba(255,255,255,.12); transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.tool-card__icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; margin-bottom: 20px;
}
.tool-card__icon--agua { background: rgba(76,201,240,.15); }
.tool-card__icon--walk { background: rgba(25,199,163,.15); }
.tool-card__icon--mapa { background: rgba(212,166,71,.18); }
.tool-card h3 {
  font-family: var(--font-condensed); font-size: 24px; font-weight: 700;
  color: #fff; text-transform: uppercase; letter-spacing: .03em; margin-bottom: 10px;
}
.tool-card p { font-size: 15px; color: rgba(255,255,255,.6); line-height: 1.6; margin-bottom: 20px; }
.tool-card .btn {
  font-size: 14px; padding: 10px 24px;
  background: rgba(255,255,255,.12); color: rgba(255,255,255,.9);
  border: .5px solid rgba(255,255,255,.2);
}
.tool-card .btn:hover { background: rgba(255,255,255,.2); }

/* ═══════════════════════════════════════════
   CTA / CONTACT
   ═══════════════════════════════════════════ */
.contact { padding: 80px 0; background: var(--negro); }
.contact__grid {
  display: block;
}
.contact__heading {
  font-family: var(--font-display); font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 700; color: #fff; line-height: 1.2; margin-bottom: 12px;
}
.contact__sub { font-size: 16px; color: rgba(255,255,255,.45); line-height: 1.6; margin-bottom: 28px; }
.contact__links { display: flex; flex-direction: column; gap: 12px; }
.contact__link {
  display: flex; align-items: center; gap: 10px;
  font-size: 15px; color: var(--verde-claro); font-weight: 500;
  transition: all var(--transition);
}
.contact__link:hover { color: #fff; }
.contact__link i { font-size: 18px; width: 24px; text-align: center; }
.contact__link i.fa-whatsapp { color: #25d366; }



/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
.footer {
  background: var(--verde-oscuro); padding: 24px 0;
  border-top: .5px solid rgba(255,255,255,.08);
}
.footer .container {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px;
}
.footer__brand {
  font-family: var(--font-display); font-size: 17px; font-weight: 700;
  color: rgba(255,255,255,.9); letter-spacing: .02em;
}
.footer__tags { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.footer__tag {
  font-size: 11px; color: rgba(255,255,255,.35);
  border: .5px solid rgba(255,255,255,.15); padding: 4px 10px;
  border-radius: 3px; letter-spacing: .07em; text-transform: uppercase;
}
.footer__copy { font-size: 13px; color: rgba(255,255,255,.25); width: 100%; text-align: center; margin-top: 8px; }

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 1024px) {
  .features__grid { gap: 12px; }
  .sensores__layout { grid-template-columns: 1fr 2fr; gap: 24px; }
  .sensores__grid { gap: 16px; grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-h: 80px; }
  .nav { display: none; }
  .hamburger { display: flex; }
  .header-logo { height: 48px; }
  .header--scrolled .header-logo { height: 42px; }

  .hero { min-height: auto; padding: 0; }
  .hero .container { padding-top: 100px; padding-bottom: 60px; }
  .hero__title { font-size: 40px; }
  .hero__subtitle { font-size: 14px; }

  .stats-bar__grid { grid-template-columns: repeat(3, 1fr); }
  .stat:nth-child(n+4) { border-top: .5px solid rgba(255,255,255,.07); }

  .intro__grid { grid-template-columns: 1fr; gap: 32px; }
  .features__grid { grid-template-columns: 1fr; }
  .sensores__layout { grid-template-columns: 1fr; gap: 32px; }
  .sensores__grid { grid-template-columns: 1fr; }
  .roi__grid { grid-template-columns: 1fr; gap: 16px; }
  .specs__grid { grid-template-columns: 1fr; }
  .tools__grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: 1fr; gap: 40px; }

  .footer .container { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
  .stats-bar__grid { grid-template-columns: repeat(2, 1fr); }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .tool-card { padding: 28px 24px; }
}