/* ============================================
   KINESIO SyE — Design System
   Tipografía: Archivo Black (display) + Inter (body)
   Paleta: mono blanco/casi-negro + verde solo CTA/acentos
   ============================================ */

:root {
  /* Brand */
  --green-700: #155F2A;
  --green-600: #1A7634;
  --green-500: #1F8B3D;   /* primary brand */
  --green-300: #6BC489;
  --green-50:  #E8F5EC;

  /* Ink scale */
  --ink-900: #0E1311;
  --ink-700: #2A332F;
  --ink-500: #5B6660;
  --ink-300: #A4ADA8;
  --ink-200: #D8DDDA;
  --ink-100: #ECEFED;
  --ink-50:  #F6F8F7;
  --white:   #FFFFFF;

  /* Surfaces */
  --bg:        var(--white);
  --bg-alt:    var(--ink-50);
  --bg-dark:   var(--ink-900);

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

  /* Type scale (rem, mobile-first) */
  --fs-display-xl: clamp(2.75rem, 8vw, 5.5rem);
  --fs-display-lg: clamp(2.25rem, 6vw, 4rem);
  --fs-display-md: clamp(1.75rem, 4.5vw, 2.75rem);
  --fs-h2: clamp(1.875rem, 4vw, 2.75rem);
  --fs-h3: 1.375rem;
  --fs-lede: 1.125rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-xs: 0.75rem;

  /* Spacing */
  --gutter: 1.5rem;
  --container: 1200px;
  --section-y: clamp(4rem, 10vw, 8rem);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(14, 19, 17, 0.06), 0 1px 1px rgba(14, 19, 17, 0.04);
  --shadow-md: 0 4px 12px rgba(14, 19, 17, 0.08), 0 2px 4px rgba(14, 19, 17, 0.04);
  --shadow-lg: 0 12px 40px rgba(14, 19, 17, 0.12);

  /* Motion */
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --t-fast: 150ms;
  --t-med: 240ms;
  --t-slow: 400ms;
}

/* ----- Reset ----- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: var(--fs-body);
  line-height: 1.55;
  color: var(--ink-900);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; margin: 0; }
button { font: inherit; }

/* ----- Container ----- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ----- Display type ----- */
.display {
  font-family: 'Archivo Black', sans-serif;
  font-weight: 900;
  font-size: var(--fs-display-xl);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
  text-wrap: balance;
}
.display em {
  font-style: italic;
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  color: var(--green-500);
  letter-spacing: -0.02em;
}
.display--md { font-size: var(--fs-display-md); }

.section-title {
  font-family: 'Archivo Black', sans-serif;
  font-size: var(--fs-h2);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  text-wrap: balance;
}

.eyebrow {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green-600);
  margin: 0 0 0.75rem;
}

.lede {
  font-size: var(--fs-lede);
  color: var(--ink-700);
  max-width: 56ch;
  margin: 0 0 2rem;
  text-wrap: pretty;
}

.section-lede {
  font-size: var(--fs-lede);
  color: var(--ink-500);
  max-width: 56ch;
  margin: 0;
  text-wrap: pretty;
}

h3 {
  font-family: 'Inter', sans-serif;
  font-size: var(--fs-h3);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
  line-height: 1.2;
}

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: var(--fs-body);
  letter-spacing: -0.005em;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease), background var(--t-fast) var(--ease), color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), box-shadow var(--t-med) var(--ease);
  white-space: nowrap;
}
.btn--lg { padding: 1.125rem 2rem; font-size: 1.0625rem; }
.btn--primary {
  background: var(--green-500);
  color: var(--white);
  border-color: var(--green-500);
}
.btn--primary:hover {
  background: var(--green-600);
  border-color: var(--green-600);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--ghost {
  background: transparent;
  color: var(--ink-900);
  border-color: var(--ink-200);
}
.btn--ghost:hover {
  border-color: var(--ink-900);
  background: var(--ink-50);
}
.btn--whatsapp {
  background: var(--whatsapp);
  color: var(--white);
  border-color: var(--whatsapp);
}
.btn--whatsapp:hover {
  background: var(--whatsapp-dark);
  border-color: var(--whatsapp-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ----- Header ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--ink-100);
}
.header-row {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-right: auto;
}
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  object-fit: cover;
  background: var(--ink-900);
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.brand-text__top {
  font-family: 'Archivo Black', sans-serif;
  font-size: 1rem;
  letter-spacing: -0.02em;
}
.brand-text__bottom {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--ink-500);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 2px;
}
.site-nav {
  display: none;
  gap: 1.75rem;
}
.site-nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink-700);
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--t-fast) var(--ease);
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--green-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-med) var(--ease);
}
.site-nav a:hover { color: var(--ink-900); }
.site-nav a:hover::after { transform: scaleX(1); }

.header-cta { display: none; }

.menu-toggle {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 1px solid var(--ink-200);
  padding: 0.625rem;
  border-radius: 10px;
  cursor: pointer;
}
.menu-toggle span {
  width: 18px;
  height: 2px;
  background: var(--ink-900);
  border-radius: 2px;
}

@media (min-width: 900px) {
  .site-nav { display: flex; }
  .header-cta { display: inline-flex; }
  .menu-toggle { display: none; }
}

/* ----- Hero ----- */
.hero {
  padding: clamp(3rem, 7vw, 6rem) 0 clamp(3rem, 7vw, 5rem);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(closest-side, rgba(31, 139, 61, 0.08), transparent 70%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; gap: 5rem; }
}
.hero-copy { max-width: 38rem; }
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  font-size: 0.9375rem;
  color: var(--ink-500);
  border-top: 1px solid var(--ink-100);
  padding-top: 1.25rem;
}
.trust-row strong {
  color: var(--ink-900);
  font-weight: 700;
  margin-right: 0.25rem;
}

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: var(--shadow-lg);
}
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-tag {
  position: absolute;
  top: 1.25rem;
  left: 1.25rem;
  background: var(--white);
  color: var(--ink-900);
  padding: 0.5rem 0.875rem;
  border-radius: 999px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.hero-tag::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 0 4px rgba(31, 139, 61, 0.18);
}

/* ----- Sections ----- */
.section { padding: var(--section-y) 0; }
.section--alt { background: var(--bg-alt); }

.section-head {
  max-width: 38rem;
  margin: 0 auto clamp(2rem, 4vw, 3.5rem);
  text-align: center;
}
.section-head--row {
  display: flex;
  justify-content: space-between;
  align-items: end;
  text-align: left;
  max-width: none;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.section-head--row .eyebrow,
.section-head--row .section-title { text-align: left; }

/* ----- Pain grid ----- */
.pain-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.pain-card {
  display: block;
  padding: 2rem 1.5rem 1.75rem;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  transition: all var(--t-med) var(--ease);
  text-align: left;
}
.pain-card:hover {
  border-color: var(--green-500);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.pain-card__icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: var(--green-50);
  color: var(--green-600);
  border-radius: 12px;
  margin-bottom: 1.25rem;
}
.pain-card__icon svg { width: 26px; height: 26px; }
.pain-card h3 { margin-bottom: 0.375rem; font-size: 1.125rem; }
.pain-card p { color: var(--ink-500); font-size: 0.9375rem; margin: 0; }

/* ----- Services ----- */
.services-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .services-grid { grid-template-columns: repeat(4, 1fr); } }

.service-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  transition: all var(--t-med) var(--ease);
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  border-color: var(--ink-900);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.service-card--feature {
  background: var(--ink-900);
  color: var(--white);
  border-color: var(--ink-900);
}
.service-card--feature:hover { border-color: var(--green-500); }
.service-card__num {
  font-family: 'Archivo Black', sans-serif;
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  color: var(--green-500);
  margin-bottom: 1.5rem;
}
.service-card--feature .service-card__num { color: var(--green-300); }
.service-card h3 { font-size: 1.25rem; }
.service-card h3 .badge {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--green-500);
  color: var(--white);
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
  margin-left: 0.25rem;
  vertical-align: middle;
}
.service-card p {
  color: var(--ink-500);
  font-size: 0.9375rem;
  margin-bottom: 1.25rem;
}
.service-card--feature p { color: var(--ink-300); }
.service-list {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--ink-100);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.service-card--feature .service-list { border-top-color: rgba(255,255,255,0.12); }
.service-list li {
  font-size: 0.875rem;
  color: var(--ink-700);
  padding-left: 1.125rem;
  position: relative;
}
.service-card--feature .service-list li { color: var(--ink-200); }
.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 2px;
  background: var(--green-500);
}

/* ----- Split (Sobre) ----- */
.split {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; gap: 5rem; }
}
.split-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: var(--shadow-md);
}
.split-visual img { width: 100%; height: 100%; object-fit: cover; }
.split-copy { max-width: 38rem; }
.split-copy p { color: var(--ink-700); }
.cred-list {
  margin: 1.75rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.cred-list li {
  font-size: 0.9375rem;
  color: var(--ink-700);
  padding-left: 1.5rem;
  position: relative;
}
.cred-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 14px;
  height: 14px;
  background: var(--green-50);
  border: 2px solid var(--green-500);
  border-radius: 50%;
}

/* ----- Testimonials ----- */
.testimonials-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 800px) { .testimonials-grid { grid-template-columns: repeat(3, 1fr); } }

.testimonial {
  margin: 0;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  position: relative;
}
.testimonial::before {
  content: '"';
  position: absolute;
  top: 0.5rem;
  left: 1rem;
  font-family: 'Archivo Black', sans-serif;
  font-size: 4rem;
  line-height: 1;
  color: var(--green-500);
  opacity: 0.18;
}
.testimonial p {
  color: var(--ink-900);
  font-size: 1rem;
  line-height: 1.55;
  margin-bottom: 1.25rem;
  text-wrap: pretty;
}
.testimonial footer {
  font-size: var(--fs-small);
  color: var(--ink-500);
  border-top: 1px solid var(--ink-100);
  padding-top: 0.875rem;
}
.testimonial footer strong {
  color: var(--ink-900);
  font-weight: 700;
  display: block;
}

/* ----- Blog ----- */
.blog-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 800px) { .blog-grid { grid-template-columns: repeat(3, 1fr); } }

.blog-card { display: flex; flex-direction: column; }
.blog-card__thumb {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--ink-100);
  margin-bottom: 1.25rem;
  transition: transform var(--t-med) var(--ease);
}
.blog-card__thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--t-slow) var(--ease);
}
.blog-card__thumb--placeholder {
  background: linear-gradient(135deg, var(--ink-100), var(--green-50));
  position: relative;
}
.blog-card__thumb--placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(31, 139, 61, 0.12), transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(31, 139, 61, 0.18), transparent 50%);
}
.blog-card:hover .blog-card__thumb img { transform: scale(1.04); }
.blog-card__cat {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green-600);
  margin: 0 0 0.5rem;
}
.blog-card h3 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  flex: 1;
  text-wrap: balance;
}
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink-900);
  transition: gap var(--t-fast) var(--ease);
}
.link-arrow:hover { gap: 0.625rem; color: var(--green-600); }

/* ----- CTA Band ----- */
.cta-band {
  background: var(--ink-900);
  color: var(--white);
  padding: clamp(4rem, 8vw, 6rem) 0;
}
.cta-band .display em { color: var(--green-300); }
.cta-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
  align-items: start;
}
@media (min-width: 900px) {
  .cta-grid { grid-template-columns: 1.2fr 0.8fr; gap: 5rem; }
}
.cta-copy p { color: var(--ink-300); font-size: var(--fs-lede); margin-bottom: 2rem; }
.cta-copy .cta-row { margin-bottom: 0; }

.cta-info {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.info-list { display: flex; flex-direction: column; gap: 1.5rem; }
.info-list li { display: flex; flex-direction: column; gap: 0.375rem; }
.info-list__label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green-300);
}
.info-list__value { color: var(--ink-200); font-size: 0.9375rem; }
.info-list__value a { color: var(--white); }
.info-list__value a:hover { color: var(--green-300); }

/* ----- Footer ----- */
.site-footer {
  background: var(--ink-900);
  color: var(--ink-200);
  padding: 3rem 0 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
  margin-bottom: 2.5rem;
}
@media (min-width: 700px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }

.footer-brand p { color: var(--ink-300); font-size: 0.9375rem; }
.footer-logo {
  width: 56px;
  height: 56px;
  border-radius: 999px;
  margin-bottom: 1rem;
  background: var(--ink-900);
  border: 2px solid var(--green-500);
}
.site-footer h4 {
  font-family: 'Archivo Black', sans-serif;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
  margin: 0 0 1rem;
}
.site-footer ul { display: flex; flex-direction: column; gap: 0.625rem; }
.site-footer ul a {
  color: var(--ink-300);
  font-size: 0.9375rem;
  transition: color var(--t-fast) var(--ease);
}
.site-footer ul a:hover { color: var(--green-300); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.5rem;
  font-size: var(--fs-xs);
  color: var(--ink-500);
}

/* ----- WhatsApp Float ----- */
.wa-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 60;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--whatsapp);
  color: var(--white);
  display: grid;
  place-items: center;
  box-shadow: 0 12px 28px rgba(37, 211, 102, 0.42);
  transition: transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}
.wa-float:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 18px 34px rgba(37, 211, 102, 0.5);
}
.wa-float::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--whatsapp);
  opacity: 0;
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0% { transform: scale(1); opacity: 0.6; }
  70% { transform: scale(1.4); opacity: 0; }
  100% { transform: scale(1.4); opacity: 0; }
}

/* ----- Reduced motion ----- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ----- Skip link (accesibilidad por teclado) ----- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 8px;
  background: var(--green-500);
  color: var(--white);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 1000;
  text-decoration: none;
  transition: top var(--t-fast) var(--ease);
}
.skip-link:focus {
  top: 8px;
  outline: 2px solid var(--ink-900);
  outline-offset: 2px;
}

/* ----- Mobile menu (basic, JS toggled) ----- */
.site-nav.is-open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--white);
  padding: 1.5rem var(--gutter);
  border-bottom: 1px solid var(--ink-100);
  gap: 1rem;
}