/* ============================================================
   Kenzen Blog System — Base CSS
   Copia independiente de las primitivas visuales de Kenzen Landing
   System (variables, reset, container, kicker, botones, reveal,
   header global) para que este plugin no dependa de que aquel esté
   activo. Ver CLAUDE.md — "independencia total".
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --kls-ruby:            #c41230;
  --kls-ruby-rgb:        196,18,48;
  --kls-ruby-light:      #e8193a;
  --kls-ruby-dark:       #8b0010;
  --kls-ruby-glow:       rgba(var(--kls-ruby-rgb),0.18);
  --kls-ruby-glow-soft:  rgba(var(--kls-ruby-rgb),0.08);
  --kls-grad-ruby:       linear-gradient(135deg, var(--kls-ruby-dark) 0%, var(--kls-ruby) 50%, var(--kls-ruby-light) 100%);
  --kls-grad-ruby-soft:  linear-gradient(135deg, rgba(var(--kls-ruby-rgb),0.06) 0%, rgba(var(--kls-ruby-rgb),0.02) 100%);

  --kls-bg-page:         #ffffff;
  --kls-bg-alt:          #F7F7F7;
  --kls-bg-ivory:        #F3F1EC;
  --kls-bg-card:         #ffffff;
  --kls-bg-card-alt:     #F7F7F7;
  --kls-bg-brand:        rgba(var(--kls-ruby-rgb),0.06);
  --kls-bg-brand-md:     rgba(var(--kls-ruby-rgb),0.11);
  --kls-bg-glass:        rgba(255,255,255,0.72);

  --kls-bg-dark:         #0B1220;
  --kls-bg-dark-alt:     #121B2E;
  --kls-bg-dark-card:    #162035;
  --kls-bg-slate:        #162035;
  --kls-bg-glass-dark:   rgba(11,18,32,0.72);

  --kls-text:            #0B1220;
  --kls-text-soft:       #162035;
  --kls-text-muted:      #3D4A60;
  --kls-text-subtle:     #8A8578;

  --kls-text-inv:        #F5F1E9;
  --kls-text-inv-muted:  #A8A49A;
  --kls-text-inv-subtle: #6A6860;

  --kls-border:          rgba(11,18,32,0.07);
  --kls-border-md:       rgba(11,18,32,0.13);
  --kls-border-brand:    rgba(var(--kls-ruby-rgb),0.18);
  --kls-border-dark:     rgba(255,255,255,0.07);
  --kls-border-dark-md:  rgba(255,255,255,0.13);
  --kls-hairline:        1px solid rgba(11,18,32,0.07);

  --kls-shadow-xs:       0 1px 4px rgba(11,18,32,0.05);
  --kls-shadow:          0 4px 16px rgba(11,18,32,0.07), 0 1px 4px rgba(11,18,32,0.04);
  --kls-shadow-md:       0 8px 28px rgba(11,18,32,0.09), 0 2px 8px rgba(11,18,32,0.05);
  --kls-shadow-lg:       0 16px 48px rgba(11,18,32,0.10), 0 4px 16px rgba(11,18,32,0.06);
  --kls-shadow-xl:       0 24px 64px rgba(11,18,32,0.12), 0 8px 24px rgba(11,18,32,0.07);
  --kls-shadow-ruby:     0 8px 32px rgba(var(--kls-ruby-rgb),0.30), 0 4px 12px rgba(var(--kls-ruby-rgb),0.16);
  --kls-shadow-ruby-soft: 0 6px 20px rgba(var(--kls-ruby-rgb),0.16), 0 2px 8px rgba(var(--kls-ruby-rgb),0.08);
  --kls-shadow-ruby-xs:  0 4px 14px rgba(var(--kls-ruby-rgb),0.12), 0 1px 4px rgba(var(--kls-ruby-rgb),0.07);
  --kls-shadow-glow:     0 0 60px rgba(var(--kls-ruby-rgb),0.18);

  --kls-radius:          8px;
  --kls-radius-lg:       12px;
  --kls-radius-xl:       16px;
  --kls-radius-2xl:      20px;
  --kls-container:       1240px;
  --kls-gap:             clamp(1.5rem, 4vw, 3.5rem);
  --kls-section-py:      clamp(2rem, 6vw, 5rem);

  --kls-font-display:    'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --kls-font-sans:       'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  --kls-ease-out:        cubic-bezier(0.22, 1, 0.36, 1);
  --kls-ease-spring:     cubic-bezier(0.34, 1.56, 0.64, 1);
  --kls-ease-smooth:     cubic-bezier(0.65, 0, 0.35, 1);

  font-size: 16px;
}

/* ── Reset ──────────────────────────────────────────────────── */
.kenzen-blog-page,
.kenzen-blog-shell * {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.kenzen-container {
  max-width: var(--kls-container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
  position: relative;
  z-index: 1;
}

/* ── Tipografía ─────────────────────────────────────────────── */
.text-ruby-metallic {
  background: var(--kls-grad-ruby);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.kenzen-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--kls-ruby);
  margin-bottom: 1rem;
  position: relative;
}

.kenzen-kicker::before {
  content: '';
  display: inline-block;
  width: 2rem;
  height: 1px;
  background: currentColor;
}

/* ── Botones ────────────────────────────────────────────────── */
.kenzen-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 1em 2.1em;
  border-radius: 8px;
  font-family: var(--kls-font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.3s, box-shadow 0.4s, transform 0.25s var(--kls-ease-spring), color 0.2s, border-color 0.3s;
  border: 1.5px solid transparent;
  overflow: hidden;
  white-space: nowrap;
  text-transform: uppercase;
  isolation: isolate;
}

.kenzen-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,0.25) 50%, transparent 70%);
  transform: translateX(-150%);
  transition: transform 0.7s var(--kls-ease-out);
  z-index: -1;
}

.kenzen-btn:hover::before {
  transform: translateX(150%);
}

.kenzen-btn--outline,
.kenzen-btn--secondary {
  background: var(--kls-bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--kls-text);
  border-color: var(--kls-border-md);
}

.kenzen-btn--outline:hover,
.kenzen-btn--secondary:hover {
  border-color: var(--kls-ruby);
  color: var(--kls-ruby);
  transform: translateY(-3px);
  box-shadow: var(--kls-shadow-md);
  background: #fff;
}

/* ======================================================
   Reveal on scroll (activado desde JS)
   ====================================================== */
.kls-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s var(--kls-ease-out), transform 0.9s var(--kls-ease-out);
  will-change: opacity, transform;
}

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

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

/* ── Global Header ──────────────────────────────────────────── */
.kls-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 99990;
  height: 68px;
  background: #ffffff;
  border-bottom: 1px solid rgba(11, 18, 32, 0.08);
  transition: transform 0.4s var(--kls-ease-out), box-shadow 0.3s;
  will-change: transform;
}

.kls-header.is-scrolled {
  box-shadow: 0 2px 16px rgba(11, 18, 32, 0.07);
}

body.admin-bar .kls-header {
  top: 32px;
}

@media screen and (max-width: 782px) {
  body.admin-bar .kls-header {
    top: 46px;
  }
}

.kls-header.is-hidden {
  transform: translateY(-100%);
}

.kls-header__inner {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.kls-header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.kls-header__logo img {
  height: 46px;
  width: auto;
  display: block;
}

.kls-header__nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.kls-header__links {
  display: flex;
  align-items: center;
  gap: clamp(0.875rem, 1.8vw, 1.75rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

.kls-header__links li {
  margin: 0;
  padding: 0;
}

.kls-header__links a {
  font-family: var(--kls-font-sans);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--kls-text);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s;
  position: relative;
}

.kls-header__links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--kls-ruby);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--kls-ease-out);
}

.kls-header__links a:hover {
  color: var(--kls-ruby);
}

.kls-header__links a:hover::after {
  transform: scaleX(1);
}

.kls-header__cart {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid rgba(11, 18, 32, 0.14);
  color: var(--kls-text) !important;
  transition: border-color 0.2s, background 0.2s, color 0.2s !important;
  text-decoration: none !important;
  flex-shrink: 0;
}

.kls-header__cart::after {
  display: none !important;
}

.kls-header__cart:hover {
  border-color: var(--kls-ruby) !important;
  color: var(--kls-ruby) !important;
  background: var(--kls-bg-brand) !important;
}

.kls-header__cart svg {
  width: 15px;
  height: 15px;
}

.kls-header__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  background: transparent;
  border: 1.5px solid rgba(11, 18, 32, 0.14);
  border-radius: 8px;
  cursor: pointer;
  padding: 9px;
  transition: border-color 0.2s;
  flex-shrink: 0;
}

.kls-header__burger:hover {
  border-color: var(--kls-ruby);
}

.kls-header__burger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--kls-text);
  border-radius: 2px;
  transition: transform 0.3s var(--kls-ease-out), opacity 0.2s;
  transform-origin: center;
}

.kls-header__burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.kls-header__burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.kls-header__burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.kls-header__mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.99);
  border-bottom: 1px solid rgba(11, 18, 32, 0.08);
  box-shadow: 0 12px 40px rgba(11, 18, 32, 0.08);
  padding: 0.5rem 1.5rem 1.5rem;
}

.kls-header__mobile-nav.is-open {
  display: block;
  animation: kls-nav-in 0.22s var(--kls-ease-out) forwards;
}

@keyframes kls-nav-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.kls-header__mobile-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.kls-header__mobile-links li {
  border-bottom: 1px solid rgba(11, 18, 32, 0.06);
  margin: 0;
  padding: 0;
}

.kls-header__mobile-links li:last-child {
  border-bottom: none;
}

.kls-header__mobile-links a,
.kls-header__mobile-cart {
  display: block;
  padding: 0.95rem 0;
  font-family: var(--kls-font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--kls-text);
  text-decoration: none;
  transition: color 0.2s;
}

.kls-header__mobile-links a:hover,
.kls-header__mobile-cart:hover {
  color: var(--kls-ruby);
}