/* ============================================================
   KORETIC – SISTEMA DE DISEÑO
   Colores: #000000 / #ECAC00 (Pantone 124 C)
   Tipografía: Raleway
   ============================================================ */

/* ── Variables ── */
:root {
  --c-black:   #000000;
  --c-gold:    #ECAC00;
  --c-gold-d:  #cc9400;
  --c-white:   #ffffff;
  --c-bg:      #f8f7f5;
  --c-surface: #111111;
  --c-grey-1:  #1a1a1a;
  --c-grey-2:  #2c2c2c;
  --c-grey-3:  #555555;
  --c-grey-4:  #888888;
  --c-grey-5:  #cccccc;
  --c-text:    #1a1a1a;
  --c-muted:   #555555;

  --ff-base:   'Raleway', system-ui, -apple-system, sans-serif;
  --fw-400: 400;
  --fw-600: 600;
  --fw-700: 700;
  --fw-800: 800;

  --fs-xs:  0.75rem;
  --fs-sm:  0.875rem;
  --fs-md:  1rem;
  --fs-lg:  1.125rem;
  --fs-xl:  1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 2rem;
  --fs-4xl: 2.75rem;
  --fs-5xl: 3.75rem;

  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;
  --sp-32: 8rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.12);
  --shadow-md: 0 4px 16px rgba(0,0,0,.12);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.15);

  --transition: 200ms ease;
  --max-w: 1200px;
  --max-w-text: 760px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--ff-base);
  font-weight: var(--fw-400);
  font-size: var(--fs-md);
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ── Focus accesibilidad AA ── */
:focus-visible {
  outline: 3px solid var(--c-gold);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── Utilidades ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}
.container--narrow { max-width: var(--max-w-text); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.section { padding-block: var(--sp-24); }
.section--dark { background: var(--c-black); color: var(--c-white); }
.section--grey { background: var(--c-bg); }
.section--gold { background: var(--c-gold); color: var(--c-black); }

.section__label {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-700);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-3);
}
.section--dark .section__label { color: var(--c-gold); }
.section--gold .section__label { color: var(--c-black); opacity: .6; }

.section__title {
  font-size: clamp(var(--fs-2xl), 4vw, var(--fs-4xl));
  font-weight: var(--fw-800);
  line-height: 1.1;
  margin-bottom: var(--sp-4);
}
.section__lead {
  font-size: var(--fs-lg);
  color: var(--c-muted);
  max-width: 640px;
  margin-bottom: var(--sp-12);
}
.section--dark .section__lead { color: var(--c-grey-4); }
.section--gold .section__lead { color: var(--c-black); opacity: .75; }

.text-gold { color: var(--c-gold); }
.text-center { text-align: center; }
.text-center .section__lead { margin-inline: auto; }

/* ── Botones ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: .75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: var(--fw-700);
  letter-spacing: .04em;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--c-gold);
  color: var(--c-black);
}
.btn--primary:hover {
  background: var(--c-gold-d);
  box-shadow: 0 4px 20px rgba(236,172,0,.4);
}

.btn--outline {
  background: transparent;
  color: var(--c-white);
  border: 2px solid var(--c-white);
}
.btn--outline:hover {
  background: var(--c-white);
  color: var(--c-black);
}

.btn--ghost {
  background: transparent;
  color: var(--c-gold);
  border: 2px solid var(--c-gold);
}
.btn--ghost:hover {
  background: var(--c-gold);
  color: var(--c-black);
}

.btn--dark {
  background: var(--c-black);
  color: var(--c-white);
  border: 2px solid var(--c-black);
}
.btn--dark:hover {
  background: var(--c-grey-2);
  border-color: var(--c-grey-2);
}

.btn--teal {
  background: #2ba58e;
  color: #fff;
}
.btn--teal:hover {
  background: #249179;
  box-shadow: 0 4px 20px rgba(43,165,142,.4);
}

.btn--lg { padding: 1rem 2.25rem; font-size: var(--fs-md); }
.btn--sm { padding: .5rem 1.25rem; font-size: var(--fs-xs); }

/* ── Navegación ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,.08);
  transition: box-shadow var(--transition);
}
.nav.nav--scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,.1);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--fs-xl);
  font-weight: var(--fw-800);
  color: var(--c-black);
  letter-spacing: -.02em;
}
.nav__logo span { color: var(--c-gold); }

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
}
.nav__links a {
  font-size: var(--fs-sm);
  font-weight: var(--fw-600);
  color: var(--c-muted);
  letter-spacing: .03em;
  transition: color var(--transition);
  position: relative;
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--c-gold);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.nav__links a:hover { color: var(--c-black); }
.nav__links a:hover::after { transform: scaleX(1); }

.nav__cta { margin-left: var(--sp-4); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--sp-2);
  color: var(--c-black);
}
.nav__toggle span {
  display: block;
  width: 24px; height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ── Hero ── */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: var(--c-black);
  color: var(--c-white);
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 70% 50%, rgba(236,172,0,.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 80% at 0% 100%, rgba(236,172,0,.04) 0%, transparent 60%);
  pointer-events: none;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(236,172,0,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(236,172,0,.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 80%);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-block: var(--sp-32);
  max-width: 800px;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: rgba(236,172,0,.12);
  border: 1px solid rgba(236,172,0,.3);
  color: var(--c-gold);
  font-size: var(--fs-xs);
  font-weight: var(--fw-700);
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: var(--sp-2) var(--sp-4);
  border-radius: 100px;
  margin-bottom: var(--sp-8);
}
.hero__badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-gold);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.8); }
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: var(--fw-800);
  line-height: 1.0;
  letter-spacing: -.03em;
  margin-bottom: var(--sp-6);
}
.hero__title .accent { color: var(--c-gold); }
.hero__title .line-break { display: block; }

.hero__sub {
  font-size: clamp(var(--fs-lg), 2vw, var(--fs-xl));
  color: rgba(255,255,255,.65);
  max-width: 580px;
  margin-bottom: var(--sp-12);
  line-height: 1.5;
}
.hero__sub strong { color: var(--c-white); font-weight: var(--fw-600); }

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  align-items: center;
  margin-bottom: var(--sp-16);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-6);
}
.hero__meta-item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.5);
  font-weight: var(--fw-600);
}
.hero__meta-item svg { color: var(--c-gold); flex-shrink: 0; }

/* ── Servicios ── */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--sp-6);
}
.service-card {
  background: var(--c-white);
  border: 1px solid #e8e6e0;
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover {
  border-color: var(--c-gold);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.service-card:hover::before { transform: scaleX(1); }

.service-card__icon {
  width: 48px; height: 48px;
  background: rgba(236,172,0,.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-6);
  color: var(--c-gold);
}
.service-card__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-700);
  margin-bottom: var(--sp-3);
  letter-spacing: -.02em;
}
.service-card__text {
  font-size: var(--fs-sm);
  color: var(--c-muted);
  line-height: 1.7;
  margin-bottom: var(--sp-6);
}
.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}
.tag {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-600);
  letter-spacing: .04em;
  padding: var(--sp-1) var(--sp-3);
  border-radius: 100px;
  background: rgba(236,172,0,.1);
  color: var(--c-black);
  border: 1px solid rgba(236,172,0,.3);
}

/* ── Diferenciales ── */
.diff__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}
.diff-item {
  background: var(--c-grey-1);
  border: 1px solid var(--c-grey-2);
  border-radius: var(--radius-md);
  padding: var(--sp-8);
  transition: border-color var(--transition);
}
.diff-item:hover { border-color: rgba(236,172,0,.4); }

.diff-item__accent {
  font-size: var(--fs-xs);
  font-weight: var(--fw-700);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-2);
}
.diff-item__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-700);
  color: var(--c-white);
  margin-bottom: var(--sp-3);
  line-height: 1.2;
}
.diff-item__text {
  font-size: var(--fs-sm);
  color: var(--c-grey-4);
  line-height: 1.7;
}
.diff-item--wide { grid-column: span 2; }

/* stats bar */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1px;
  background: var(--c-grey-2);
  border: 1px solid var(--c-grey-2);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: var(--sp-12);
}
.stat {
  background: var(--c-grey-1);
  padding: var(--sp-8) var(--sp-6);
  text-align: center;
}
.stat__num {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-800);
  color: var(--c-gold);
  line-height: 1;
  letter-spacing: -.03em;
}
.stat__label {
  font-size: var(--fs-sm);
  color: var(--c-grey-4);
  margin-top: var(--sp-2);
}

/* ── Korefactu highlight ── */
.korefactu {
  background: #264653;
  position: relative;
  overflow: hidden;
}
.korefactu__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 70% at 100% 50%, rgba(43,165,142,.2) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 0% 100%, rgba(43,165,142,.08) 0%, transparent 60%);
  pointer-events: none;
}
.korefactu__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: center;
  position: relative;
  z-index: 1;
}
.korefactu__label {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: rgba(43,165,142,.15);
  border: 1px solid rgba(43,165,142,.4);
  color: #2ba58e;
  font-size: var(--fs-xs);
  font-weight: var(--fw-700);
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: var(--sp-2) var(--sp-4);
  border-radius: 100px;
  margin-bottom: var(--sp-6);
}
.korefactu__title {
  margin-bottom: var(--sp-6);
  line-height: 1;
}
.korefactu__title img { display: block; }
.korefactu__text {
  font-size: var(--fs-lg);
  color: rgba(255,255,255,.65);
  margin-bottom: var(--sp-8);
  line-height: 1.6;
}
.korefactu__features {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-bottom: var(--sp-8);
}
.korefactu__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.75);
}
.korefactu__feature::before {
  content: '';
  width: 18px; height: 18px; flex-shrink: 0;
  background: #2ba58e;
  border-radius: 50%;
  margin-top: 2px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M2 6l3 3 5-5' stroke='%23fff' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: 12px;
  background-position: center;
  background-repeat: no-repeat;
}
.korefactu__actions { display: flex; flex-wrap: wrap; gap: var(--sp-4); }

/* mock UI */
.korefactu__visual {
  background: var(--c-grey-1);
  border: 1px solid var(--c-grey-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.kf-mock__topbar {
  background: var(--c-grey-2);
  padding: var(--sp-3) var(--sp-6);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.kf-mock__dots { display: flex; gap: var(--sp-2); }
.kf-mock__dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.kf-mock__dots span:nth-child(1) { background: #ff5f56; }
.kf-mock__dots span:nth-child(2) { background: #febc2e; }
.kf-mock__dots span:nth-child(3) { background: #27c93f; }
.kf-mock__url {
  flex: 1;
  background: rgba(255,255,255,.06);
  border-radius: 4px;
  padding: var(--sp-1) var(--sp-3);
  font-size: var(--fs-xs);
  color: var(--c-grey-4);
  font-family: monospace;
}
.kf-mock__body { padding: var(--sp-6); }
.kf-mock__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-6);
}
.kf-mock__logo {
  display: flex;
  align-items: center;
}
.kf-mock__stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}
.kf-mock__stat {
  background: var(--c-grey-2);
  border-radius: var(--radius-sm);
  padding: var(--sp-4);
}
.kf-mock__stat-val {
  font-size: var(--fs-xl);
  font-weight: var(--fw-800);
  color: var(--c-white);
  line-height: 1;
  margin-bottom: var(--sp-1);
}
.kf-mock__stat-lbl { font-size: var(--fs-xs); color: var(--c-grey-4); }
.kf-mock__table-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) 0;
  border-bottom: 1px solid rgba(255,255,255,.04);
  font-size: var(--fs-xs);
  color: var(--c-grey-4);
}
.kf-mock__table-row:last-child { border-bottom: none; }
.kf-mock__table-row strong { color: var(--c-white); font-size: var(--fs-sm); }
.kf-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 10px;
  font-weight: var(--fw-700);
  letter-spacing: .04em;
}
.kf-badge--ok { background: rgba(39,201,63,.15); color: #27c93f; }
.kf-badge--pend { background: rgba(236,172,0,.15); color: var(--c-gold); }
.kf-badge--info { background: rgba(100,149,237,.15); color: #6495ed; }

/* ── Casos de uso ── */
.cases__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--sp-6);
}
.case-card {
  border: 1px solid #e8e6e0;
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  background: var(--c-white);
  transition: box-shadow var(--transition), transform var(--transition);
}
.case-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.case-card__sector {
  font-size: var(--fs-xs);
  font-weight: var(--fw-700);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-3);
}
.case-card__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-700);
  margin-bottom: var(--sp-3);
  line-height: 1.2;
}
.case-card__text {
  font-size: var(--fs-sm);
  color: var(--c-muted);
  line-height: 1.7;
  margin-bottom: var(--sp-4);
}
.case-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

/* Featured case – Tagttoo */
.case-card--featured {
  grid-column: 1 / -1;
  background: #0a0a0a;
  border: 1px solid rgba(253,204,104,.2);
  color: var(--c-white);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: center;
  transition: box-shadow var(--transition), transform var(--transition);
}
.case-card--featured:hover {
  box-shadow: 0 12px 40px rgba(253,204,104,.15);
  transform: translateY(-2px);
}
.case-card--featured .case-card__sector {
  color: #fdcc68;
}
.case-card--featured .case-card__title {
  font-size: clamp(var(--fs-xl), 2.5vw, var(--fs-3xl));
  color: var(--c-white);
  margin-bottom: var(--sp-4);
}
.case-card--featured .case-card__text {
  color: rgba(255,255,255,.65);
  font-size: var(--fs-md);
  margin-bottom: var(--sp-6);
}
.case-card--featured .tag {
  background: rgba(253,204,104,.1);
  color: #fdcc68;
  border-color: rgba(253,204,104,.25);
}
.case-card__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: rgba(253,204,104,.12);
  border: 1px solid rgba(253,204,104,.35);
  color: #fdcc68;
  font-size: var(--fs-xs);
  font-weight: var(--fw-700);
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: var(--sp-1) var(--sp-3);
  border-radius: 100px;
  margin-bottom: var(--sp-4);
}
.case-card__logo {
  margin-bottom: var(--sp-6);
}
.case-card__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}
.case-card__stat {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-md);
  padding: var(--sp-3) var(--sp-4);
}
.case-card__stat-val {
  font-size: var(--fs-lg);
  font-weight: var(--fw-700);
  color: #fdcc68;
  line-height: 1.2;
  margin-bottom: var(--sp-1);
}
.case-card__stat-lbl {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.35);
}
.case-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  color: #fdcc68;
  font-size: var(--fs-sm);
  font-weight: var(--fw-700);
  letter-spacing: .03em;
  text-decoration: none;
  transition: gap var(--transition);
}
.case-card__link:hover { gap: var(--sp-3); }
.case-card__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
}
.case-card__store-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: rgba(253,204,104,.08);
  border: 1px solid rgba(253,204,104,.2);
  color: rgba(255,255,255,.6);
  font-size: var(--fs-xs);
  font-weight: var(--fw-600);
  padding: var(--sp-1) var(--sp-3);
  border-radius: 100px;
  transition: background var(--transition), color var(--transition);
}
.case-card__store-btn:hover {
  background: rgba(253,204,104,.15);
  color: #fdcc68;
}
.case-card__side {
  padding: var(--sp-6);
  background: rgba(255,255,255,.02);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,.05);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--sp-5);
}
.case-card__side .case-card__stats { margin-bottom: 0; }
.case-card__side-text {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.45);
  line-height: 1.7;
  padding-block: var(--sp-3);
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
@media (max-width: 768px) {
  .case-card--featured {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }
}

/* ── Proceso ── */
.process__list {
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  max-width: 800px;
}
.process__list::before {
  content: '';
  position: absolute;
  left: 23px; top: 48px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-gold), transparent);
}
.process-step {
  display: flex;
  gap: var(--sp-6);
  padding-bottom: var(--sp-10);
  position: relative;
}
.process-step:last-child { padding-bottom: 0; }
.process-step__num {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--c-gold);
  color: var(--c-black);
  font-weight: var(--fw-800);
  font-size: var(--fs-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}
.process-step__content { padding-top: var(--sp-3); }
.process-step__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-700);
  margin-bottom: var(--sp-2);
}
.process-step__text { font-size: var(--fs-sm); color: var(--c-muted); }

/* ── IA aplicada ── */
.ai__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: center;
}
.ai__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  margin-top: var(--sp-8);
}
.ai__item {
  display: flex;
  gap: var(--sp-4);
  align-items: flex-start;
}
.ai__item-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  background: rgba(236,172,0,.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gold);
  margin-top: 2px;
}
.ai__item-title {
  font-size: var(--fs-md);
  font-weight: var(--fw-700);
  margin-bottom: var(--sp-1);
}
.ai__item-text { font-size: var(--fs-sm); color: var(--c-muted); line-height: 1.6; }

.ai__ethics {
  background: var(--c-bg);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  border: 1px solid #e8e6e0;
}
.ai__ethics-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-700);
  margin-bottom: var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.ai__ethics-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}
.ai__ethics-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  font-size: var(--fs-sm);
  color: var(--c-muted);
  line-height: 1.6;
}
.ai__ethics-list li::before {
  content: '→';
  color: var(--c-gold);
  font-weight: var(--fw-700);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ── FAQ ── */
.faq__list {
  max-width: 800px;
  margin-inline: auto;
}
.faq-item {
  border-bottom: 1px solid #e8e6e0;
}
.faq-item:first-child { border-top: 1px solid #e8e6e0; }
.faq-item__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-6) 0;
  gap: var(--sp-4);
  text-align: left;
  font-size: var(--fs-lg);
  font-weight: var(--fw-600);
  color: var(--c-text);
  transition: color var(--transition);
}
.faq-item__btn:hover { color: var(--c-gold); }
.faq-item__btn[aria-expanded="true"] { color: var(--c-gold); }
.faq-item__icon {
  flex-shrink: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 2px solid currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background var(--transition);
}
.faq-item__btn[aria-expanded="true"] .faq-item__icon {
  transform: rotate(45deg);
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-black);
}
.faq-item__body {
  overflow: hidden;
  max-height: 0;
  transition: max-height .3s ease;
}
.faq-item__body.is-open { max-height: 600px; }
.faq-item__text {
  padding-bottom: var(--sp-6);
  font-size: var(--fs-md);
  color: var(--c-muted);
  line-height: 1.7;
}

/* ── Contacto ── */
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--sp-16);
  align-items: start;
}
.contact__info-row {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}
.contact__info-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  background: var(--c-grey-2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gold);
}
.contact__info-label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-700);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--c-grey-4);
  margin-bottom: var(--sp-1);
}
.contact__info-value {
  font-size: var(--fs-md);
  color: var(--c-white);
  font-weight: var(--fw-600);
}

/* Formulario */
.form {
  background: var(--c-grey-1);
  border: 1px solid var(--c-grey-2);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
}
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}
.form__group {
  margin-bottom: var(--sp-4);
  position: relative;
}
.form__label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-700);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--c-grey-4);
  margin-bottom: var(--sp-2);
}
.form__input,
.form__textarea,
.form__select {
  width: 100%;
  background: var(--c-grey-2);
  border: 1px solid var(--c-grey-2);
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  font-size: var(--fs-sm);
  color: var(--c-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form__input::placeholder,
.form__textarea::placeholder { color: var(--c-grey-4); }
.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  outline: none;
  border-color: var(--c-gold);
  box-shadow: 0 0 0 3px rgba(236,172,0,.15);
}
.form__input.is-error,
.form__textarea.is-error {
  border-color: #e53e3e;
  box-shadow: 0 0 0 3px rgba(229,62,62,.1);
}
.form__error {
  font-size: var(--fs-xs);
  color: #e53e3e;
  margin-top: var(--sp-1);
  display: none;
}
.form__error.is-visible { display: block; }

.form__textarea { resize: vertical; min-height: 120px; }
.form__select { appearance: none; cursor: pointer; }
.form__honeypot { display: none !important; visibility: hidden; }

.form__submit-area {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  flex-wrap: wrap;
}
.form__note {
  font-size: var(--fs-xs);
  color: var(--c-grey-4);
  line-height: 1.5;
}

/* Status messages */
.form__status {
  border-radius: var(--radius-sm);
  padding: var(--sp-4) var(--sp-6);
  font-size: var(--fs-sm);
  font-weight: var(--fw-600);
  margin-top: var(--sp-4);
  display: none;
}
.form__status.is-success {
  display: block;
  background: rgba(39,201,63,.12);
  border: 1px solid rgba(39,201,63,.3);
  color: #27c93f;
}
.form__status.is-error {
  display: block;
  background: rgba(229,62,62,.12);
  border: 1px solid rgba(229,62,62,.3);
  color: #e53e3e;
}

/* btn loading */
.btn--loading {
  opacity: .7;
  pointer-events: none;
  position: relative;
}
.btn--loading::after {
  content: '';
  position: absolute;
  right: 14px; top: 50%;
  transform: translateY(-50%);
  width: 14px; height: 14px;
  border: 2px solid rgba(0,0,0,.3);
  border-top-color: var(--c-black);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: translateY(-50%) rotate(360deg); } }

/* ── Footer ── */
.footer {
  background: var(--c-black);
  border-top: 1px solid var(--c-grey-2);
  padding-block: var(--sp-16);
  color: var(--c-grey-4);
}
.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-8);
  margin-bottom: var(--sp-12);
}
.footer__brand { max-width: 300px; }
.footer__logo {
  margin-bottom: var(--sp-4);
}
.footer__logo img { filter: brightness(0) invert(1); }
.footer__desc {
  font-size: var(--fs-sm);
  line-height: 1.7;
  margin-bottom: var(--sp-6);
}
.footer__col-title {
  font-size: var(--fs-xs);
  font-weight: var(--fw-700);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-white);
  margin-bottom: var(--sp-4);
}
.footer__col-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}
.footer__col-links a {
  font-size: var(--fs-sm);
  transition: color var(--transition);
}
.footer__col-links a:hover { color: var(--c-gold); }

.footer__bottom {
  border-top: 1px solid var(--c-grey-2);
  padding-top: var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  flex-wrap: wrap;
}
.footer__copy { font-size: var(--fs-xs); }
.footer__legal {
  display: flex;
  gap: var(--sp-6);
}
.footer__legal a { font-size: var(--fs-xs); transition: color var(--transition); }
.footer__legal a:hover { color: var(--c-gold); }

/* ── Korefactu page specific ── */
.kf-hero {
  background: linear-gradient(135deg, var(--c-black) 60%, #1a1004 100%);
  min-height: 90svh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  position: relative;
  overflow: hidden;
  color: var(--c-white);
}
.kf-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--sp-6);
}
.kf-feature-card {
  border: 1px solid #e8e6e0;
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  background: var(--c-white);
  transition: box-shadow var(--transition), transform var(--transition);
}
.kf-feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.kf-feature-card__icon {
  width: 44px; height: 44px;
  background: rgba(236,172,0,.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gold);
  margin-bottom: var(--sp-4);
}
.kf-feature-card__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-700);
  margin-bottom: var(--sp-2);
}
.kf-feature-card__text {
  font-size: var(--fs-sm);
  color: var(--c-muted);
  line-height: 1.7;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--sp-6);
  align-items: start;
}
.pricing-card {
  border: 1px solid #e8e6e0;
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  background: var(--c-white);
  position: relative;
}
.pricing-card--featured {
  border-color: var(--c-gold);
  box-shadow: 0 0 0 1px var(--c-gold);
}
.pricing-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-gold);
  color: var(--c-black);
  font-size: var(--fs-xs);
  font-weight: var(--fw-700);
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: var(--sp-1) var(--sp-4);
  border-radius: 100px;
}
.pricing-card__name {
  font-size: var(--fs-xl);
  font-weight: var(--fw-700);
  margin-bottom: var(--sp-2);
}
.pricing-card__price {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-800);
  letter-spacing: -.03em;
  color: var(--c-black);
  line-height: 1;
  margin-bottom: var(--sp-1);
}
.pricing-card__price span {
  font-size: var(--fs-lg);
  font-weight: var(--fw-400);
  color: var(--c-muted);
}
.pricing-card__desc { font-size: var(--fs-sm); color: var(--c-muted); margin-bottom: var(--sp-6); }
.pricing-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-bottom: var(--sp-8);
  border-top: 1px solid #e8e6e0;
  padding-top: var(--sp-6);
}
.pricing-card__feature-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--fs-sm);
  color: var(--c-muted);
}
.pricing-card__feature-item::before {
  content: '✓';
  color: var(--c-gold);
  font-weight: var(--fw-700);
  flex-shrink: 0;
}

/* ── Clientes – franja de logos ── */
.clients-strip {
  background: var(--c-black);
  border-top: 1px solid rgba(236,172,0,.1);
  border-bottom: 1px solid rgba(236,172,0,.1);
  padding-block: var(--sp-16) var(--sp-12);
  overflow: hidden;
}
.clients-strip__header {
  margin-bottom: var(--sp-10);
}
.clients-strip__title {
  font-size: clamp(var(--fs-2xl), 3vw, var(--fs-4xl));
  font-weight: var(--fw-800);
  color: var(--c-white);
  line-height: 1.1;
  letter-spacing: -.02em;
  margin-bottom: var(--sp-3);
}
.clients-strip__sub {
  font-size: var(--fs-md);
  color: var(--c-grey-4);
  max-width: 540px;
  margin-inline: auto;
  line-height: 1.6;
}
.clients-strip__overflow {
  position: relative;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
}
.clients-strip__track {
  display: flex;
  align-items: center;
  width: max-content;
  animation: clients-scroll 32s linear infinite;
  will-change: transform;
}
.clients-strip__overflow:hover .clients-strip__track {
  animation-play-state: paused;
}
@keyframes clients-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .clients-strip__track {
    animation: none;
    flex-wrap: wrap;
    width: 100%;
    justify-content: center;
    gap: var(--sp-6);
    padding-inline: var(--sp-6);
  }
  .clients-strip__track .client-logo[aria-hidden="true"] { display: none; }
  .clients-strip__overflow {
    mask-image: none;
    -webkit-mask-image: none;
  }
}
.client-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  padding-inline: var(--sp-12);
  height: 80px;
  flex-shrink: 0;
  opacity: .4;
  transition: opacity .3s ease;
  position: relative;
}
.client-logo::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 32px;
  background: rgba(255,255,255,.12);
}
.client-logo:last-child::after { display: none; }
.client-logo:hover { opacity: .9; }
.client-logo img {
  max-height: 38px;
  max-width: 140px;
  width: auto;
  height: auto;
  filter: brightness(0) invert(1);
  object-fit: contain;
}
.client-logo__name {
  font-size: 1rem;
  font-weight: var(--fw-800);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-white);
  white-space: nowrap;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .korefactu__inner { grid-template-columns: 1fr; }
  .korefactu__visual { display: none; }
  .diff__grid { grid-template-columns: 1fr; }
  .diff-item--wide { grid-column: span 1; }
  .ai__inner { grid-template-columns: 1fr; }
  .contact__inner { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }

  /* Cuando el menú está abierto, el nav se expande a pantalla completa.
     Nota: backdrop-filter crea un nuevo containing-block para position:fixed,
     así que usamos el propio nav como overlay en lugar de fixed anidados. */
  .nav.is-open {
    bottom: 0;
    overflow-y: auto;
  }
  .nav.is-open .nav__inner {
    flex-wrap: wrap;
    height: auto;
    align-items: flex-start;
    padding-bottom: var(--sp-8);
  }
  /* Fila 1: logo + toggle (72px) */
  .nav.is-open .nav__logo {
    order: 1;
    height: 72px;
    display: flex;
    align-items: center;
  }
  .nav.is-open .nav__toggle {
    order: 2;
    height: 72px;
    margin-left: auto;
    display: flex;
    align-items: center;
  }
  /* Fila 2: enlaces */
  .nav.is-open .nav__links {
    order: 3;
    display: flex;
    flex-direction: column;
    flex-basis: 100%;
    gap: var(--sp-6);
    padding-block: var(--sp-6);
    border-top: 1px solid rgba(0,0,0,.08);
  }
  .nav.is-open .nav__links a { font-size: var(--fs-xl); color: var(--c-black); }
  /* Fila 3: botón CTA */
  .nav.is-open .nav__cta {
    order: 4;
    display: block;
    flex-basis: 100%;
  }
  .nav.is-open .nav__cta .btn { width: 100%; justify-content: center; }

  .nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero__title { letter-spacing: -.02em; }
  .section { padding-block: var(--sp-16); }
  .form__row { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  :root { --sp-6: 1.25rem; }
  .hero__actions { flex-direction: column; align-items: flex-start; }
  .btn--lg { width: 100%; justify-content: center; }
  .stats { grid-template-columns: 1fr; }
}

/* ── Animaciones de entrada ── */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .5s ease, transform .5s ease;
}
[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  [data-reveal].is-revealed { opacity: 1; transform: none; }
  .hero__badge::before { animation: none; }
}

/* ── Back to top ── */
.back-to-top {
  position: fixed;
  bottom: var(--sp-8);
  right: var(--sp-8);
  z-index: 900;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-gold);
  color: var(--c-black);
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .25s, transform .25s, background .2s;
  pointer-events: none;
}
.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--c-gold-d);
}
@media (max-width: 600px) {
  .back-to-top { bottom: var(--sp-6); right: var(--sp-4); }
}

/* ── Print ── */
@media print {
  .nav, .hero, .footer { display: none; }
}