/* ═══════════════════════════════════════════════════════════
   styles.css — Sistema Preventivo de Salud
   Mobile-First | CSS Custom Properties | Flexbox + Grid
   ═══════════════════════════════════════════════════════════ */

/* ────────────────────────────────────────────
   1. VARIABLES / DESIGN TOKENS
   ──────────────────────────────────────────── */
:root {
  /* Brand Colors */
  --color-primary: #E3221A;
  /* Rojo vibrante — corazón del logo */
  --color-primary-dark: #B81A13;
  --color-primary-light: #F9534D;
  --color-primary-soft: rgba(227, 34, 26, 0.08);

  --color-secondary: #8DC63F;
  /* Verde manzana — tilde del logo */
  --color-secondary-dark: #6EA32E;
  --color-secondary-light: #A8D85A;
  --color-secondary-soft: rgba(141, 198, 63, 0.12);

  /* WhatsApp */
  --color-whatsapp: #25D366;
  --color-whatsapp-dark: #128C7E;

  /* Neutrals */
  --color-dark: #0F1117;
  --color-dark-2: #1A1E2A;
  --color-dark-3: #252B3B;
  --color-text: #1E2330;
  --color-text-muted: #6B7280;
  --color-text-light: #9CA3AF;
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFB;
  --color-bg-alt-2: #F1F5F9;

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Font Sizes (fluid) */
  --text-xs: clamp(0.7rem, 1.5vw, 0.75rem);
  --text-sm: clamp(0.8rem, 2vw, 0.875rem);
  --text-base: clamp(0.9rem, 2.5vw, 1rem);
  --text-lg: clamp(1rem, 3vw, 1.125rem);
  --text-xl: clamp(1.1rem, 3.5vw, 1.25rem);
  --text-2xl: clamp(1.3rem, 4vw, 1.5rem);
  --text-3xl: clamp(1.6rem, 5vw, 2rem);
  --text-4xl: clamp(2rem, 6vw, 2.75rem);
  --text-5xl: clamp(2.4rem, 7vw, 3.5rem);
  --text-6xl: clamp(2.8rem, 8vw, 4.5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Shadows — Sutiles, enfoque flat/minimalista */
  --shadow-sm:  0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 1px rgba(0, 0, 0, 0.02);
  --shadow-md:  0 2px 8px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-lg:  0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
  --shadow-xl:  0 8px 28px rgba(0, 0, 0, 0.09), 0 4px 10px rgba(0, 0, 0, 0.05);
  --shadow-primary: 0 4px 16px rgba(227, 34, 26, 0.22);
  --shadow-secondary: 0 4px 16px rgba(141, 198, 63, 0.20);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --navbar-height: 72px;
  --container-max: 1200px;
  --container-padding: clamp(1rem, 5vw, 2rem);
}

/* ────────────────────────────────────────────
   2. RESET & BASE
   ──────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
  letter-spacing: -0.02em;
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ────────────────────────────────────────────
   3. UTILITIES
   ──────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* ────────────────────────────────────────────
   4. BUTTONS
   ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-primary);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 12px 40px rgba(227, 34, 26, 0.40);
}

.btn__icon {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-base);
}

.btn--primary:hover .btn__icon {
  transform: translate(3px, -3px);
}

.btn__icon-left {
  width: 20px;
  height: 20px;
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
  padding: calc(var(--space-4) - 2px) calc(var(--space-8) - 2px);
  font-size: var(--text-base);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.btn--whatsapp {
  background: var(--color-whatsapp);
  color: #fff;
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.35);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn--whatsapp:hover {
  background: var(--color-whatsapp-dark);
  box-shadow: 0 12px 40px rgba(37, 211, 102, 0.50);
}

.btn--outline-light {
  background: transparent;
  color: rgba(255, 255, 255, 0.85);
  border: 2px solid rgba(255, 255, 255, 0.30);
  padding: calc(var(--space-4) - 2px) calc(var(--space-8) - 2px);
  font-size: var(--text-sm);
}

.btn--outline-light:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(255, 255, 255, 0.60);
  color: #fff;
}

/* ────────────────────────────────────────────
   5. SECTION COMMON STYLES
   ──────────────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.section-eyebrow--light {
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.15);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-black);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.section-title--light {
  color: #fff;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-inline: auto;
}

.section-subtitle--light {
  color: rgba(255, 255, 255, 0.72);
}

/* ────────────────────────────────────────────
   6. NAVBAR
   ──────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-base), background-color var(--transition-base);
}

.navbar.is-scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

.navbar__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  gap: var(--space-8);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.navbar__logo-icon {
  width: 140px;
  height: auto;
  flex-shrink: 0;
}

.navbar__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.navbar__logo-sistema {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.navbar__logo-preventivo {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-black);
  color: var(--color-text);
}

.navbar__logo-salud {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-secondary-dark);
}

/* Nav links */
.navbar__nav {
  display: none;
  /* hidden on mobile by default */
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.navbar__link {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.navbar__link:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.navbar__link.is-active {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.navbar__link--cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  margin-left: var(--space-2);
  box-shadow: 0 4px 14px rgba(227, 34, 26, 0.30);
}

.navbar__link--cta:hover {
  background: var(--color-primary-dark) !important;
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(227, 34, 26, 0.40);
}

/* Hamburger */
.navbar__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: background var(--transition-fast);
  flex-shrink: 0;
}

.navbar__hamburger:hover {
  background: var(--color-bg-alt);
}

.navbar__hamburger:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.navbar__hamburger-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.navbar__hamburger.is-open .navbar__hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.is-open .navbar__hamburger-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.navbar__hamburger.is-open .navbar__hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
.navbar__nav.is-open {
  display: flex;
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) var(--container-padding) var(--space-6);
  box-shadow: var(--shadow-lg);
  animation: slideDown var(--transition-slow) ease forwards;
}

.navbar__nav.is-open .navbar__links {
  flex-direction: column;
  width: 100%;
  gap: var(--space-1);
}

.navbar__nav.is-open .navbar__link {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
}

.navbar__nav.is-open .navbar__link--cta {
  text-align: center;
  margin-left: 0;
  margin-top: var(--space-2);
  padding: var(--space-3) var(--space-4);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Desktop nav */
@media (min-width: 768px) {
  .navbar__nav {
    display: flex !important;
  }

  .navbar__hamburger {
    display: none;
  }
}

/* ────────────────────────────────────────────
   7. HERO SECTION
   ──────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--navbar-height);
  padding-bottom: var(--space-16);
  overflow: hidden;
  background: var(--color-bg);
}


.hero__container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
  padding-top: var(--space-8);
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-secondary-dark);
  background: var(--color-secondary-soft);
  border: 1px solid rgba(141, 198, 63, 0.25);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  width: fit-content;
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-secondary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }

  50% {
    transform: scale(1.4);
    opacity: 0.7;
  }
}

.hero__title {
  font-size: var(--text-6xl);
  font-weight: var(--font-weight-black);
  color: var(--color-text);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero__title-accent {
  color: var(--color-primary);
  position: relative;
}

.hero__title-accent::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 3px;
  opacity: 0.25;
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.65;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

/* Hero stats */
.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding-top: var(--space-2);
}

.hero__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero__stat-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-black);
  color: var(--color-text);
  line-height: 1;
  display: flex;
  align-items: center;
  gap: 2px;
}

.hero__stat-accent {
  color: var(--color-primary);
}

.hero__stat-icon {
  width: 22px;
  height: 22px;
  color: var(--color-whatsapp);
}

.hero__stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
}

.hero__stat-divider {
  width: 1px;
  height: 36px;
  background: var(--color-border);
}

/* Hero visual / phone mockup */
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__phone {
  width: min(320px, 85vw);
  background: var(--color-dark);
  border-radius: 40px;
  padding: 12px;
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255, 255, 255, 0.06);
  position: relative;
  z-index: 1;
  /* Sin animación de levitación: aspecto estático y profesional */
}


.hero__phone-screen {
  background: #ECE5DD;
  border-radius: 30px;
  overflow: hidden;
}

.hero__chat {
  display: flex;
  flex-direction: column;
}

.hero__chat-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: #075E54;
  padding: var(--space-3) var(--space-4);
}

.hero__chat-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.hero__chat-avatar svg {
  width: 20px;
  height: 20px;
}

.hero__chat-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.hero__chat-info strong {
  font-size: var(--text-sm);
  color: #fff;
  font-weight: var(--font-weight-semibold);
}

.hero__chat-info span {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.75);
}

.hero__chat-messages {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  min-height: 220px;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23000000' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero__chat-msg {
  max-width: 85%;
  padding: var(--space-2) var(--space-3);
  border-radius: 12px;
  font-size: 12.5px;
  line-height: 1.5;
  position: relative;
}

.hero__chat-msg p {
  color: var(--color-dark);
  margin-bottom: 4px;
}

.hero__chat-msg time {
  display: block;
  font-size: 10px;
  color: var(--color-text-muted);
  text-align: right;
}

.hero__chat-msg--in {
  background: #fff;
  align-self: flex-start;
  border-radius: 0 12px 12px 12px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.10);
}

.hero__chat-msg--out {
  background: #DCF8C6;
  align-self: flex-end;
  border-radius: 12px 0 12px 12px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.10);
}

/* PDF attachment thumbnail (WhatsApp style) */
.chat-pdf {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.05);
  border-radius: 8px;
  padding: 8px 10px;
  margin-bottom: 6px;
  min-width: 160px;
}

.chat-pdf__icon {
  flex-shrink: 0;
}

.chat-pdf__icon svg {
  width: 36px;
  height: 36px;
  display: block;
  filter: drop-shadow(0 1px 3px rgba(229, 57, 53, 0.35));
}

.chat-pdf__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow: hidden;
}

.chat-pdf__name {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--color-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 130px;
}

.chat-pdf__meta {
  font-size: 10px;
  color: var(--color-text-muted);
}

.hero__chat-input {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  margin: var(--space-2) var(--space-4) var(--space-4);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
}

.hero__chat-input span {
  font-size: 12px;
  color: var(--color-text-muted);
}

.hero__chat-input button {
  width: 28px;
  height: 28px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.hero__chat-input button svg {
  width: 14px;
  height: 14px;
}


/* Scroll indicator */
.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__scroll-indicator span {
  width: 28px;
  height: 48px;
  border: 2px solid var(--color-border);
  border-radius: 14px;
  position: relative;
  display: block;
}

.hero__scroll-indicator span::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }

  80% {
    transform: translateX(-50%) translateY(18px);
    opacity: 0;
  }
}

@media (min-width: 900px) {
  .hero__container {
    grid-template-columns: 1fr 1fr;
    padding-top: var(--space-12);
    gap: var(--space-20);
  }

  .hero__visual {
    order: 2;
  }

  .hero__phone {
    width: 310px;
  }
}

/* ────────────────────────────────────────────
   8. PARADIGMA SECTION
   ──────────────────────────────────────────── */
.paradigma {
  padding-block: var(--space-24);
  background: var(--color-bg-alt);
}

.paradigma__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}

.paradigma__text {
  max-width: 60ch;
}

.paradigma__lead {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: 1.45;
  margin-bottom: var(--space-4);
}

.paradigma__lead strong {
  color: var(--color-primary);
}

.paradigma__body {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* Comparison cards */
.paradigma__comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-4);
  align-items: center;
}

.paradigma__card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.paradigma__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.paradigma__card h3 {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  margin-top: var(--space-3);
}

.paradigma__card ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.paradigma__card li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-4);
  position: relative;
}

.paradigma__card li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-border);
}

.paradigma__card-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.paradigma__card-icon svg {
  width: 22px;
  height: 22px;
}

.paradigma__card--old {
  border-color: #FEE2E2;
  background: #FFF5F5;
}

.paradigma__card--old .paradigma__card-icon {
  background: #FEE2E2;
  color: #EF4444;
}

.paradigma__card--old h3 {
  color: #991B1B;
}

.paradigma__card--old li::before {
  color: #FCA5A5;
}

.paradigma__card--new {
  border-color: rgba(141, 198, 63, 0.30);
  background: linear-gradient(135deg, #F9FFF0, #F0FAE0);
}

.paradigma__card--new .paradigma__card-icon {
  background: var(--color-secondary-soft);
  color: var(--color-secondary-dark);
}

.paradigma__card--new h3 {
  color: var(--color-secondary-dark);
}

.paradigma__card--new li::before {
  color: var(--color-secondary);
}

.paradigma__card--new li {
  color: var(--color-text);
}

.paradigma__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: 50%;
  color: #fff;
  flex-shrink: 0;
  box-shadow: var(--shadow-primary);
}

.paradigma__arrow svg {
  width: 18px;
  height: 18px;
}

@media (min-width: 900px) {
  .paradigma__content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

/* Mobile: stack comparison vertically */
@media (max-width: 540px) {
  .paradigma__comparison {
    grid-template-columns: 1fr;
  }

  .paradigma__arrow {
    transform: rotate(90deg);
    margin: auto;
  }
}

/* ────────────────────────────────────────────
   9. MEDICINA / LAS 4P SECTION
   ──────────────────────────────────────────── */
.medicina {
  position: relative;
  padding-block: var(--space-24);
  overflow: hidden;
}

.medicina__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-2) 50%, var(--color-dark-3) 100%);
  z-index: 0;
}

.medicina__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(227, 34, 26, 0.15) 0%, transparent 60%),
    radial-gradient(circle at 80% 20%, rgba(141, 198, 63, 0.10) 0%, transparent 50%);
}

.medicina .container {
  position: relative;
  z-index: 1;
}

.medicina__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.medicina__card {
  position: relative;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  overflow: hidden;
  cursor: default;
  transition:
    background var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.medicina__card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(227, 34, 26, 0.40);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.40);
}

.medicina__card-letter {
  position: absolute;
  top: -20px;
  right: var(--space-6);
  font-size: 8rem;
  font-weight: var(--font-weight-black);
  color: rgba(255, 255, 255, 0.04);
  line-height: 1;
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.04em;
  transition: color var(--transition-slow);
}

.medicina__card:hover .medicina__card-letter {
  color: rgba(227, 34, 26, 0.08);
}

.medicina__card-number {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
  display: block;
}

.medicina__card-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  color: #fff;
  margin-bottom: var(--space-3);
}

.medicina__card:hover .medicina__card-title {
  color: var(--color-primary-light);
}

.medicina__card-desc {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.60);
  line-height: 1.75;
}

@media (min-width: 640px) {
  .medicina__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .medicina__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ────────────────────────────────────────────
   10. ¿CÓMO FUNCIONA? SECTION
   ──────────────────────────────────────────── */
.funciona {
  padding-block: var(--space-24);
  background: var(--color-bg);
}

.funciona__features {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-16);
}

.funciona__feature {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: start;
  gap: var(--space-5);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  border: 1px solid var(--color-border-light);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.funciona__feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border);
}

.funciona__feature-num {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-light);
  letter-spacing: 0.08em;
  padding-top: 6px;
}

.funciona__feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--color-secondary-soft);
  color: var(--color-secondary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.funciona__feature:hover .funciona__feature-icon {
  transform: scale(1.1);
}

.funciona__feature-icon svg {
  width: 26px;
  height: 26px;
}

.funciona__feature-icon--green {
  background: rgba(37, 211, 102, 0.12);
  color: var(--color-whatsapp-dark);
}

.funciona__feature-icon--red {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.funciona__feature-title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.funciona__feature-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* Lifecycle timeline */
.funciona__lifecycle {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--space-10);
  border: 1px solid var(--color-border-light);
}

.funciona__lifecycle-title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-8);
  text-align: center;
}

.funciona__timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  position: relative;
}

.funciona__timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-secondary));
}

.funciona__timeline-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  padding-left: var(--space-2);
  position: relative;
}

.funciona__timeline-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 3px solid var(--color-primary);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  transition: background var(--transition-base), border-color var(--transition-base);
}

.funciona__timeline-item:nth-child(3) .funciona__timeline-dot,
.funciona__timeline-item:nth-child(4) .funciona__timeline-dot {
  border-color: var(--color-secondary-dark);
}

.funciona__timeline-item:hover .funciona__timeline-dot {
  background: var(--color-primary);
}

.funciona__timeline-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 1px;
}

.funciona__timeline-content strong {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.funciona__timeline-content span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

@media (min-width: 640px) {
  .funciona__timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
  }

  .funciona__timeline::before {
    top: 8px;
    left: 0;
    right: 0;
    bottom: auto;
    width: auto;
    height: 2px;
  }

  .funciona__timeline-item {
    flex-direction: column;
    padding-left: 0;
    align-items: flex-start;
  }
}

@media (min-width: 768px) {
  .funciona__features {
    grid-template-columns: 1fr 1fr;
  }

  .funciona__feature:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .funciona__features {
    grid-template-columns: repeat(3, 1fr);
  }

  .funciona__feature:last-child {
    grid-column: auto;
  }
}

/* ────────────────────────────────────────────
   11. BENEFICIOS B2B
   ──────────────────────────────────────────── */
.beneficios {
  padding-block: var(--space-24);
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.beneficios__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.beneficios__card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-8);
  border-left: 3px solid transparent;
  transition:
    border-left-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.beneficios__card:hover {
  border-left-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateX(4px);
}

.beneficios__card-icon {
  width: 44px;
  height: 44px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition-base);
}
.beneficios__card-icon svg {
  width: 22px;
  height: 22px;
}
.beneficios__card:hover .beneficios__card-icon {
  background: var(--color-primary);
  color: #fff;
}

.beneficios__card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.beneficios__card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.beneficios__card-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

@media (min-width: 640px) {
  .beneficios__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .beneficios__grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .beneficios__card {
    flex-direction: column;
    border-left: 1px solid var(--color-border);
    border-top: 3px solid transparent;
    transition:
      border-top-color var(--transition-base),
      box-shadow var(--transition-base),
      transform var(--transition-base);
  }
  .beneficios__card:hover {
    border-left-color: var(--color-border);
    border-top-color: var(--color-primary);
    transform: translateY(-4px) translateX(0);
  }
}

/* ────────────────────────────────────────────
   12. CTA SECTION
   ──────────────────────────────────────────── */
.cta-section {
  position: relative;
  padding-block: var(--space-24);
  background: var(--color-dark-2);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.cta-section__container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-section__title {
  font-size: var(--text-5xl);
  font-weight: var(--font-weight-black);
  color: #fff;
  margin-bottom: var(--space-4);
  line-height: 1.1;
}

.cta-section__title span {
  color: var(--color-primary-light);
}

.cta-section__subtitle {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.62);
  max-width: 55ch;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.cta-section__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
  align-items: center;
}

/* ────────────────────────────────────────────
   12. FOOTER
   ──────────────────────────────────────────── */
.footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.65);
}

.footer__container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  padding-block: var(--space-16);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  margin-bottom: var(--space-4);
}

.footer__logo-icon {
  width: 140px;
  border-radius: 60%;
  height: auto;
  flex-shrink: 0;
}

.footer__brand-name {
  font-size: var(--text-base);
  font-weight: var(--font-weight-bold);
  color: #fff;
}

.footer__tagline {
  font-size: var(--text-sm);
  line-height: 1.7;
  max-width: 40ch;
  color: rgba(255, 255, 255, 0.50);
}

.footer__nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

.footer__nav-title {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: #fff;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.footer__nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.50);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: #fff;
}

.footer__link--accent:hover {
  color: var(--color-secondary-light);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-block: var(--space-6);
}

.footer__bottom-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
  text-align: center;
}

.footer__copy {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.35);
}

.footer__domain {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.35);
}

@media (min-width: 640px) {
  .footer__container {
    grid-template-columns: 1fr 1fr;
  }

  .footer__bottom-container {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (min-width: 1024px) {
  .footer__container {
    grid-template-columns: 2fr 1fr;
  }
}

/* ────────────────────────────────────────────
   13. SCROLL ANIMATIONS (intersection observer)
   ──────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.10s;
}

.reveal-delay-2 {
  transition-delay: 0.20s;
}

.reveal-delay-3 {
  transition-delay: 0.30s;
}

.reveal-delay-4 {
  transition-delay: 0.40s;
}

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