/* ==========================================================================
   KORUMA · Landing one-page
   Layout: sidebar fija izq + main desplazable der.
   ========================================================================== */

/* ----- Foundations ----- */
html { scroll-behavior: smooth; scroll-padding-top: 0; }
body {
  font-family: var(--ff-body);
  color: var(--koruma-text);
  background: var(--koruma-background);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { font-family: var(--ff-display); text-wrap: balance; margin: 0; }
p { margin: 0; text-wrap: pretty; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

::selection { background: var(--koruma-accent); color: var(--koruma-primary); }

:focus-visible {
  outline: 2px solid var(--koruma-accent);
  outline-offset: 3px;
  border-radius: 4px;
}
:focus:not(:focus-visible) { outline: none; }

/* Scrollbar sobrio */
html { scrollbar-width: thin; scrollbar-color: var(--c-gris-300) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--c-gris-300); border-radius: 5px; border: 2px solid var(--koruma-surface); }
::-webkit-scrollbar-thumb:hover { background: var(--koruma-primary); }

/* ----- Skip link ----- */
.k-skip-link {
  position: absolute;
  top: -100px; left: 8px;
  background: var(--koruma-primary);
  color: var(--koruma-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  z-index: 300;
  font-weight: 600;
}
.k-skip-link:focus { top: 8px; }

/* ==========================================================================
   Layout wrapper
   ========================================================================== */
.k-layout { min-height: 100vh; }

.k-main {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  background: var(--koruma-background);
}
@media (min-width: 1400px) { .k-main { margin-left: var(--sidebar-w-lg); } }

/* ==========================================================================
   Sidebar (fija en desktop, top-bar en mobile)
   ========================================================================== */
.k-sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--koruma-secondary);
  border-right: 1px solid var(--koruma-border);
  z-index: 100;
}
@media (min-width: 1400px) { .k-sidebar { width: var(--sidebar-w-lg); } }

.k-sidebar__inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--space-5) var(--space-4);
  gap: var(--space-5);
}

.k-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-2);
  color: var(--koruma-primary);
  transition: opacity var(--t);
}
.k-brand:hover { opacity: 0.85; }
.k-brand__logo {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.k-brand__logo img { max-height: 44px; max-width: 44px; width: auto; }
.k-brand__name {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--koruma-primary);
}

.k-sidebar__toggle { display: none; }

.k-nav { flex: 1; margin-top: var(--space-2); }
.k-nav__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.k-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--koruma-text);
  border-radius: var(--radius-sm);
  transition: background var(--t), color var(--t);
  font-size: 0.95rem;
  font-weight: 500;
}
.k-nav__link:hover { background: var(--koruma-surface); color: var(--koruma-primary); }
.k-nav__link.is-active {
  background: var(--koruma-primary);
  color: var(--koruma-secondary);
}
.k-nav__icon {
  flex-shrink: 0;
  width: 20px; height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.k-nav__icon svg {
  width: 100%; height: 100%;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.k-nav__text { flex: 1; }

.k-sidebar__foot { padding: var(--space-2); }
.k-sidebar__copyright {
  font-size: 0.75rem;
  color: var(--c-gris-500);
  text-align: center;
  margin: 0;
}

/* ==========================================================================
   Sección base (aplica a todas menos inicio)
   ========================================================================== */
.k-section { padding: var(--space-12) var(--space-6); scroll-margin-top: 20px; }
.k-section__inner { max-width: var(--container-max); margin: 0 auto; }

.k-section__head {
  text-align: center;
  margin-bottom: var(--space-8);
}
.k-section__title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--koruma-primary);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 var(--space-3);
}
.k-section__title--left { text-align: left; }
.k-section__subtitle {
  color: var(--c-gris-500);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.6;
}

.k-kicker {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--koruma-accent);
  margin-bottom: var(--space-3);
}
.k-kicker--dark { color: var(--koruma-primary); }

.k-empty {
  text-align: center;
  color: var(--c-gris-500);
  padding: var(--space-8) 0;
  font-size: 1rem;
}

/* ==========================================================================
   Sección Inicio (hero)
   ========================================================================== */
.k-inicio {
  min-height: 100vh;
  position: relative;
  padding: 0;
  color: var(--koruma-secondary);
  overflow: hidden;
  display: flex;
  align-items: center;
  isolation: isolate;
}
.k-inicio__bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -2;
}
.k-inicio__overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at center, transparent 30%, rgba(10,37,64,.5) 100%),
    linear-gradient(120deg, rgba(10,37,64,.88) 0%, rgba(30,90,168,.55) 100%);
  z-index: -1;
}
.k-inicio__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: var(--space-8);
  align-items: center;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}
.k-inicio__left { display: flex; flex-direction: column; align-items: flex-start; }
.k-inicio__title {
  font-family: var(--ff-display);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin: var(--space-2) 0 var(--space-3);
}
.k-inicio__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  font-weight: 400;
  margin: 0 0 var(--space-6);
  opacity: 0.92;
  max-width: 520px;
}
.k-inicio__card {
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.k-inicio__intro { margin: var(--space-2) 0 0; font-size: 1rem; line-height: 1.65; }

@media (max-width: 900px) {
  .k-inicio__grid { grid-template-columns: 1fr; gap: var(--space-6); padding: var(--space-10) var(--space-4); }
  .k-inicio__title { font-size: clamp(2.5rem, 12vw, 4rem); }
}

/* ==========================================================================
   Botones
   ========================================================================== */
.k-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--t), color var(--t), border-color var(--t), transform var(--t);
  white-space: nowrap;
}
.k-btn--primary { background: var(--koruma-primary); color: var(--koruma-secondary); }
.k-btn--primary:hover { background: var(--koruma-primary-dark); transform: translateY(-1px); }
.k-btn--accent { background: var(--koruma-accent); color: var(--koruma-primary); }
.k-btn--accent:hover { background: var(--koruma-secondary); transform: translateY(-1px); }
.k-btn--outline {
  background: transparent;
  color: var(--koruma-primary);
  border-color: var(--koruma-primary);
}
.k-btn--outline:hover { background: var(--koruma-primary); color: var(--koruma-secondary); }
.k-btn--lg { padding: 1rem 2rem; font-size: 1rem; }
.k-btn--sm { padding: 0.55rem 1.1rem; font-size: 0.85rem; }

/* ==========================================================================
   Grid
   ========================================================================== */
.k-grid { display: grid; gap: var(--space-5); }
.k-grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1100px) { .k-grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px)  { .k-grid--4 { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; } }

/* ==========================================================================
   Cards (servicios / productos)
   ========================================================================== */
.k-card {
  background: var(--koruma-secondary);
  border: 1px solid var(--koruma-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
  box-shadow: var(--shadow-sm);
}
.k-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(62,182,232,.5);
}
.k-card__media {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--c-gris-100);
}
.k-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow);
}
.k-card:hover .k-card__media img { transform: scale(1.05); }
.k-card__icon {
  position: absolute;
  top: 12px; right: 12px;
  width: 38px; height: 38px;
  background: var(--koruma-secondary);
  color: var(--koruma-primary);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}
.k-card__icon svg { width: 18px; height: 18px; stroke: currentColor; stroke-width: 2; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.k-card__body {
  padding: var(--space-4);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.k-card__title {
  font-family: var(--ff-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--koruma-primary);
  margin: 0 0 var(--space-2);
}
.k-card__text {
  color: var(--c-gris-500);
  font-size: 0.9rem;
  margin: 0 0 var(--space-4);
  flex: 1;
  line-height: 1.55;
}
.k-card__link {
  color: var(--koruma-primary);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  align-self: flex-start;
  transition: color var(--t);
}
.k-card__link:hover { color: var(--koruma-accent); }
.k-arrow { display: inline-block; transition: transform var(--t); }
.k-card__link:hover .k-arrow, .k-card:hover .k-arrow { transform: translateX(4px); }

/* ==========================================================================
   Reseñas / Testimonios (carrusel)
   ========================================================================== */
.k-carousel { position: relative; }
.k-carousel__viewport { overflow: hidden; }
.k-carousel__track {
  display: flex;
  gap: var(--space-5);
  transition: transform 500ms cubic-bezier(.2,.7,.2,1);
  will-change: transform;
}
.k-testimonio {
  flex: 0 0 calc((100% - var(--space-5) * 2) / 3);
  background: var(--koruma-secondary);
  border: 1px solid var(--koruma-border);
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.k-testimonio__head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.k-testimonio__avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.k-testimonio__avatar--placeholder {
  background: linear-gradient(135deg, var(--koruma-primary), var(--koruma-accent));
  color: var(--koruma-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--ff-display);
  font-size: 0.9rem;
}
.k-testimonio__meta { min-width: 0; }
.k-testimonio__nombre { margin: 0; font-weight: 600; color: var(--koruma-primary); font-size: 0.95rem; }
.k-testimonio__cargo { margin: 2px 0 0; font-size: 0.8rem; color: var(--c-gris-500); }
.k-testimonio__texto {
  margin: 0 0 var(--space-4);
  color: var(--koruma-text);
  font-size: 0.95rem;
  line-height: 1.6;
  border-left: 3px solid var(--koruma-accent);
  padding-left: var(--space-4);
  flex: 1;
}
.k-stars { color: var(--c-gris-300); font-size: 1.1rem; letter-spacing: 2px; }
.k-star--on { color: var(--c-star); }

.k-carousel__controls {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
}
.k-carousel__btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--koruma-border);
  background: var(--koruma-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--koruma-primary);
  transition: background var(--t), border-color var(--t), color var(--t);
}
.k-carousel__btn:hover:not(:disabled) {
  background: var(--koruma-primary);
  border-color: var(--koruma-primary);
  color: var(--koruma-secondary);
}
.k-carousel__btn:disabled { opacity: 0.35; cursor: not-allowed; }
.k-carousel__btn svg { width: 20px; height: 20px; stroke: currentColor; stroke-width: 2; fill: none; stroke-linecap: round; stroke-linejoin: round; }

@media (max-width: 1000px) {
  .k-testimonio { flex: 0 0 calc((100% - var(--space-5)) / 2); }
}
@media (max-width: 640px) {
  .k-testimonio { flex: 0 0 100%; }
}

/* ==========================================================================
   Marcas
   ========================================================================== */
.k-marcas__grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
}
.k-marcas__item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  border: 1px solid var(--koruma-border);
  border-radius: var(--radius);
  background: var(--koruma-secondary);
  min-height: 100px;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}
.k-marcas__item:hover {
  transform: translateY(-2px);
  border-color: var(--koruma-accent);
  box-shadow: var(--shadow-sm);
}
.k-marcas__item img {
  max-height: 42px;
  max-width: 100%;
  width: auto;
  filter: grayscale(1) opacity(.6);
  transition: filter var(--t);
}
.k-marcas__item:hover img { filter: none; }

@media (max-width: 900px) { .k-marcas__grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 500px) { .k-marcas__grid { grid-template-columns: repeat(2, 1fr); } }

/* ==========================================================================
   Quiénes somos
   ========================================================================== */
.k-quienes__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}
.k-quienes__body { display: flex; flex-direction: column; align-items: flex-start; }
.k-quienes__intro {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--c-gris-500);
  margin: var(--space-3) 0 var(--space-6);
}
.k-quienes__media img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
@media (max-width: 900px) {
  .k-quienes__grid { grid-template-columns: 1fr; }
  .k-quienes__media { max-width: 520px; margin: 0 auto; }
}

/* ==========================================================================
   Contacto (info + form)
   ========================================================================== */
.k-contacto__grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-6);
  align-items: start;
}
.k-contacto__info,
.k-contacto__form {
  background: var(--koruma-secondary);
  border: 1px solid var(--koruma-border);
  border-radius: var(--radius);
  padding: var(--space-6);
}
.k-contacto__info-title {
  font-family: var(--ff-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--koruma-primary);
  margin: 0 0 var(--space-4);
}
.k-contacto__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.k-contacto__list li { display: flex; align-items: center; gap: var(--space-3); }
.k-contacto__list a { color: var(--koruma-primary); font-weight: 500; transition: color var(--t); }
.k-contacto__list a:hover { color: var(--koruma-accent); }
.k-contacto__icon {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(30,90,168,.08);
  color: var(--koruma-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t), color var(--t);
}
.k-contacto__list li:hover .k-contacto__icon {
  background: var(--koruma-primary);
  color: var(--koruma-secondary);
}
.k-contacto__icon svg { width: 18px; height: 18px; stroke: currentColor; stroke-width: 2; fill: none; stroke-linecap: round; stroke-linejoin: round; }

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

/* ==========================================================================
   Form
   ========================================================================== */
.k-form { display: flex; flex-direction: column; gap: var(--space-4); }
.k-form__row { display: flex; flex-direction: column; gap: 0.35rem; position: relative; }
.k-form__row--split { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.k-form__row--split > div { display: flex; flex-direction: column; gap: 0.35rem; }
.k-form__label { font-size: 0.9rem; font-weight: 500; color: var(--koruma-primary); }
.k-form__input,
.k-form__textarea {
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--koruma-border);
  border-radius: var(--radius-sm);
  background: var(--koruma-secondary);
  color: var(--koruma-text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--t), box-shadow var(--t);
}
.k-form__input:hover,
.k-form__textarea:hover { border-color: var(--c-gris-300); }
.k-form__input:focus,
.k-form__textarea:focus {
  outline: none;
  border-color: var(--koruma-primary);
  box-shadow: 0 0 0 4px rgba(30,90,168,.12);
}
.k-form__textarea { resize: vertical; min-height: 110px; font-family: inherit; }
.k-form__error {
  color: var(--c-error);
  font-size: 0.82rem;
  display: none;
}
.k-form__row--error .k-form__error { display: block; }
.k-form__row--error .k-form__input,
.k-form__row--error .k-form__textarea { border-color: var(--c-error); }
.k-form__honeypot { position: absolute; left: -9999px; }
.k-form__feedback {
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  display: none;
}
.k-form__feedback--ok    { display: block; background: rgba(5,150,105,.1);  color: var(--c-exito); border: 1px solid rgba(5,150,105,.3); }
.k-form__feedback--error { display: block; background: rgba(220,38,38,.1); color: var(--c-error); border: 1px solid rgba(220,38,38,.3); }
@media (max-width: 500px) { .k-form__row--split { grid-template-columns: 1fr; } }

/* ==========================================================================
   Reveal on scroll
   ========================================================================== */
.k-reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms cubic-bezier(.2,.7,.2,1), transform 600ms cubic-bezier(.2,.7,.2,1);
  transition-delay: var(--k-reveal-delay, 0ms);
}
.k-reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .k-reveal { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   RESPONSIVE: sidebar → top-bar mobile
   ========================================================================== */
@media (max-width: 900px) {
  .k-main {
    margin-left: 0;
    padding-top: var(--nav-mobile-h);
  }
  .k-sidebar {
    position: fixed;
    top: 0; left: 0; right: 0;
    bottom: auto;
    width: 100%;
    height: var(--nav-mobile-h);
    border-right: none;
    border-bottom: 1px solid var(--koruma-border);
    box-shadow: var(--shadow-sm);
  }
  .k-sidebar__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--space-4);
    gap: var(--space-3);
  }
  .k-brand { padding: 0; flex: 0 0 auto; }
  .k-brand__logo { width: 36px; height: 36px; }
  .k-brand__logo img { max-height: 36px; max-width: 36px; }
  .k-brand__name { font-size: 1.05rem; }

  .k-sidebar__toggle {
    display: inline-flex;
    flex-direction: column;
    gap: 5px;
    width: 44px; height: 44px;
    padding: 0;
    background: transparent;
    border: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: var(--radius-sm);
  }
  .k-sidebar__toggle:hover { background: var(--koruma-surface); }
  .k-sidebar__toggle span {
    display: block;
    width: 22px; height: 2px;
    background: var(--koruma-primary);
    border-radius: 1px;
    transition: transform var(--t), opacity var(--t);
  }
  .k-sidebar__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .k-sidebar__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .k-sidebar__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .k-nav {
    position: fixed;
    top: var(--nav-mobile-h);
    left: 0; right: 0;
    background: var(--koruma-secondary);
    border-bottom: 1px solid var(--koruma-border);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height 300ms ease-out;
    margin-top: 0;
    padding: 0 var(--space-4);
  }
  .k-nav.is-open {
    max-height: calc(100vh - var(--nav-mobile-h));
    overflow-y: auto;
    padding: var(--space-3) var(--space-4);
  }
  .k-nav__link {
    padding: var(--space-4);
    font-size: 1rem;
  }
  .k-sidebar__foot { display: none; }
}

/* ==========================================================================
   Print
   ========================================================================== */
@media print {
  .k-sidebar, .k-carousel__controls, .k-inicio__bg, .k-inicio__overlay { display: none !important; }
  .k-main { margin: 0 !important; }
}