:root {
  --color-primary: #0043A5;
  --color-primary-rgb: 0, 67, 165;
  --color-primary-dark: #002E73;
  --color-secondary: #69696C;
  --color-accent-orange: #F76C07;
  --color-accent-blue: #4899FA;
  --color-bg: #FAFAFA;
  --color-surface: #FFFFFF;
  --color-text: #1A1A1E;
  --color-text-muted: #5B5B5E;
  --color-border: #E2E2E5;

  --font-base: 'Segoe UI', system-ui, -apple-system, Roboto, Arial, sans-serif;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4.5rem;

  --radius: 10px;
  --container-max: 1120px;

  --fs-sm: clamp(0.85rem, 0.8rem + 0.2vw, 0.95rem);
  --fs-base: clamp(1rem, 0.95rem + 0.2vw, 1.1rem);
  --fs-lg: clamp(1.15rem, 1.05rem + 0.4vw, 1.4rem);
  --fs-2xl: clamp(2rem, 1.6rem + 1.6vw, 2.9rem);
  --fs-3xl: clamp(2.5rem, 2rem + 2.4vw, 3.6rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body.reveal-ready .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s ease, transform .7s ease;
}
body.reveal-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes float-logo {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.hero-visual img { animation: float-logo 4.5s ease-in-out infinite; }

@media (prefers-reduced-motion: reduce) {
  .hero-visual img { animation: none; }
  body.reveal-ready .reveal,
  body.reveal-ready .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: var(--fs-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
}
img { max-width: 100%; display: block; }
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-3);
}
.btn {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: var(--fs-base);
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(var(--color-primary-rgb),.25); }
.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover { background: rgba(var(--color-primary-rgb),.06); }
.btn.is-disabled {
  background: var(--color-border);
  color: var(--color-text-muted);
  border-color: var(--color-border);
  cursor: not-allowed;
}
.btn.is-disabled:hover { transform: none; box-shadow: none; }
section { padding-block: var(--space-6); }
.on-surface { background: var(--color-surface); }
.section-title { font-size: var(--fs-2xl); margin: 0 0 var(--space-2); }
.section-lead {
  font-size: var(--fs-lg);
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 0 var(--space-5);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250,250,250,.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-2);
  position: relative;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.site-logo img { height: 34px; width: auto; display: block; }
.brand-text {
  font-family: 'Poppins', var(--font-base);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  line-height: 1;
}
.brand-tamiz { color: var(--color-primary); }
.brand-digital { color: var(--color-secondary); }
.nav-links {
  display: none;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a { color: var(--color-text); text-decoration: none; font-weight: 500; }
.nav-links a:hover { color: var(--color-primary); }
.nav-toggle {
  display: inline-flex;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-primary);
}
.nav-links.is-open {
  display: flex;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  flex-direction: column;
  background: var(--color-surface);
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  gap: var(--space-2);
}
@media (min-width: 768px) {
  .nav-links { display: flex; }
  .nav-toggle { display: none; }
  .nav-links.is-open {
    position: static;
    flex-direction: row;
    background: none;
    padding: 0;
    border-bottom: 0;
  }
}

.site-footer {
  background: var(--color-primary-dark);
  color: #fff;
  padding-block: var(--space-4);
  text-align: center;
  font-size: var(--fs-sm);
}

/* Motivo visual del logo: disperso (caos) -> grilla uniforme (orden) */
.tamiz-scatter, .tamiz-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  width: 72px;
  margin-bottom: var(--space-2);
}
.tamiz-scatter span, .tamiz-grid span { aspect-ratio: 1; border-radius: 3px; }
.tamiz-scatter span:nth-child(2) { transform: translate(4px, -3px); }
.tamiz-scatter span:nth-child(5) { transform: translate(-3px, 4px); }
.tamiz-grid span { background: var(--color-primary); }

.hero { padding-block: var(--space-6) var(--space-5); }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 var(--space-2); }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--fs-sm);
  padding: 6px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.hero-badge svg { flex-shrink: 0; color: var(--color-accent-orange); }
.hero-grid { display: grid; gap: var(--space-5); align-items: center; }
.hero-copy h1 { font-size: var(--fs-3xl); line-height: 1.1; margin: 0 0 var(--space-1); }
.hero-copy h1 .text-primary { color: var(--color-primary); }
.hero-subtitle { color: var(--color-primary); font-weight: 700; font-size: var(--fs-lg); line-height: 1.25; margin: 0 0 var(--space-3); }
.hero-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-4); }
.hero-visual { justify-self: center; }
.hero-visual img { width: min(300px, 70vw); }
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.2fr 1fr; }
  .hero-visual { justify-self: end; }
}

.pain-list { list-style: none; margin: 0 0 var(--space-3); padding: 0; display: grid; gap: var(--space-2); }
.pain-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-2) var(--space-3);
  font-weight: 600;
}
.pain-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(var(--color-primary-rgb), .08);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.pain-badge {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--fs-sm);
  margin: 0;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
}
.pain-badge svg { flex-shrink: 0; color: var(--color-accent-orange); }
@media (min-width: 700px) {
  .pain-list { grid-template-columns: repeat(2, 1fr); }
}

.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-4); }
.step {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
}
.step h3 { margin: var(--space-2) 0 var(--space-1); font-size: var(--fs-lg); }
.step p { margin: 0; color: var(--color-text-muted); }
.step-arrow { font-size: 2rem; color: var(--color-primary); margin-bottom: var(--space-2); }
@media (min-width: 900px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}

.compare {
  display: grid;
  gap: 2px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.compare-row { display: grid; grid-template-columns: 1fr; gap: 2px; background: var(--color-border); }
.compare-row > div { background: var(--color-surface); padding: var(--space-2) var(--space-3); }
.compare-label { font-weight: 600; }
.compare-head { font-weight: 700; color: var(--color-primary); }
.compare-row div:nth-child(3) { color: var(--color-primary); font-weight: 600; }
@media (min-width: 700px) {
  .compare-row { grid-template-columns: 1fr 1.3fr 1.3fr; }
}

.process-grid { display: grid; gap: var(--space-3); grid-template-columns: 1fr; }
.process-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
  padding: var(--space-3);
}
.process-card h3 { margin: 0 0 var(--space-1); font-size: var(--fs-lg); color: var(--color-primary); }
.process-card p { margin: 0; color: var(--color-text-muted); }
@media (min-width: 700px) {
  .process-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1050px) {
  .process-grid { grid-template-columns: repeat(4, 1fr); }
}

.split { max-width: 640px; }

.on-brand { background: var(--color-primary); color: #fff; }
.on-brand .section-title { color: #fff; }
.on-brand .section-lead { color: rgba(255,255,255,.85); }
.center { text-align: center; }
.center .section-lead { margin-inline: auto; }
.btn-on-brand { background: #fff; color: var(--color-primary); }
.btn-on-brand:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.2); }