/* ===== Korvel — Design System ===== */

:root {
  --bg: #0B1220;
  --bg-elevated: #101A2C;
  --card: rgba(255,255,255,0.03);
  --card-hover: rgba(0,212,255,0.055);
  --primary: #1B3A5C;
  --accent: #00D4FF;
  --accent-soft: rgba(0,212,255,0.10);
  --accent-line: rgba(0,212,255,0.28);
  --text: #F5F7FA;
  --text-muted: #9CA9BC;
  --text-dim: #6B7A90;
  --line: rgba(255,255,255,0.08);
  --line-soft: rgba(255,255,255,0.06);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --ease: cubic-bezier(.16,.8,.24,1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; overflow-x: clip; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  font-size: 16px;
  overflow-x: clip;
  position: relative;
}

h1, h2, h3, .brand, .brand-mark, .logo-mark, .logo {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
}

a { color: inherit; }

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

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow { max-width: 720px; }
.container--blog { max-width: 880px; }

.prose { max-width: 640px; margin: 0 auto; }

section { position: relative; z-index: 1; padding: 110px 0; }
footer { position: relative; z-index: 1; }

.section-border { border-bottom: 1px solid var(--line-soft); }

.kicker {
  font-size: 12px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: 18px;
}

.tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 5px 16px;
  font-weight: 600;
}

/* ===== Brand mark ===== */
.brand-mark, .logo-mark {
  font-weight: 700;
  letter-spacing: -0.5px;
  display: inline-flex;
  align-items: baseline;
}
.brand-mark .kor, .logo-mark .kor { color: #FFFFFF; }
.brand-mark .vel, .logo-mark .vel {
  color: var(--accent);
  font-style: italic;
  display: inline-block;
  transform: skewX(-8deg);
  text-shadow: 0 0 18px rgba(0,212,255,0.35);
}

/* ===== Hero logo (large) ===== */
.hero .logo {
  font-weight: 700;
  letter-spacing: -1px;
}
.hero .logo .kor {
  color: #FFFFFF;
  text-shadow: 0 0 30px rgba(255,255,255,0.4);
}
.hero .logo .vel {
  color: var(--accent);
  font-style: italic;
  transform: skewX(-8deg);
  display: inline-block;
  text-shadow: 0 0 24px rgba(0,212,255,0.55), 0 0 48px rgba(0,212,255,0.25);
  animation: pulse-glow 3s ease-in-out infinite;
}
@keyframes pulse-glow {
  0%, 100% { text-shadow: 0 0 24px rgba(0,212,255,0.55), 0 0 48px rgba(0,212,255,0.25); }
  50% { text-shadow: 0 0 34px rgba(0,212,255,0.8), 0 0 64px rgba(0,212,255,0.4); }
}

/* ===== Nav ===== */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background-color 0.35s var(--ease), border-color 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
}

.topnav.is-scrolled {
  background: rgba(11,18,32,0.72);
  border-color: var(--line-soft);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.topnav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
}

.topnav .logo-mark { font-size: 20px; }

.topnav .nav-inner {
  display: flex;
  gap: 32px;
}

.topnav .nav-inner a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: -0.1px;
  position: relative;
  padding-bottom: 2px;
}

.topnav .nav-inner a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -3px;
  width: 0; height: 1.5px;
  background: var(--accent);
  transition: width 0.25s var(--ease);
}

.topnav .nav-inner a:hover, .topnav .nav-inner a.active { color: var(--text); }
.topnav .nav-inner a:hover::after, .topnav .nav-inner a.active::after { width: 100%; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15.5px;
  padding: 15px 30px;
  border-radius: 10px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.btn-primary {
  background: var(--accent);
  color: #06121C;
  box-shadow: 0 0 0 rgba(0,212,255,0);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0,212,255,0.28);
}
.btn-primary svg { transition: transform 0.2s var(--ease); }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}
.btn-ghost:hover {
  border-color: var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent);
}

.cta-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Hero ===== */
.hero {
  padding: 96px 0 110px;
  text-align: center;
  border-bottom: 1px solid var(--line-soft);
  overflow: clip;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 60% 55% at 50% 20%, black 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 60% 55% at 50% 20%, black 0%, transparent 75%);
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: radial-gradient(500px circle at var(--mx, 50%) var(--my, 20%), rgba(0,212,255,0.14), transparent 60%);
  pointer-events: none;
  transition: background 0.4s ease-out;
}

#bg-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

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

.hero .logo {
  display: inline-flex;
  align-items: baseline;
  margin-bottom: 14px;
  font-size: 44px;
  font-weight: 700;
}

.hero .tagline {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 0;
  margin-bottom: 44px;
  font-weight: 600;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.12;
  max-width: 20ch;
  text-wrap: balance;
  margin: 0 auto 26px;
}

.hero p.subtitle {
  font-size: 19px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 44px;
}

.trust-note {
  margin-top: 20px;
  font-size: 13.5px;
  color: var(--text-dim);
}

/* ===== Benefits ===== */
.beneficios {
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.beneficios-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.beneficio {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 30px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--line);
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  will-change: transform;
}

.beneficio:hover {
  transform: translateY(-5px);
  background: var(--card-hover);
  border-color: var(--accent-line);
  box-shadow: 0 16px 40px rgba(0,0,0,0.28);
}

.icono-badge {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  color: var(--accent);
  transition: transform 0.25s var(--ease);
}

.beneficio:hover .icono-badge { transform: scale(1.08); }

.beneficio h3 {
  font-size: 17.5px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.2px;
}

.beneficio p {
  font-size: 14.5px;
  color: var(--text-muted);
}

/* ===== Problema ===== */
.problema {
  text-align: center;
  position: relative;
}

.problema-mark {
  position: absolute;
  top: 8%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 220px;
  font-weight: 800;
  color: rgba(255,255,255,0.025);
  z-index: 0;
  pointer-events: none;
  user-select: none;
  line-height: 1;
}

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

.problema h2.kicker { display: inline-block; }

.problema p.statement {
  font-size: 24px;
  font-weight: 500;
  line-height: 1.45;
  max-width: 640px;
  margin: 0 auto;
  color: var(--text);
  text-wrap: balance;
}

.problema .highlight {
  color: var(--accent);
  font-weight: 700;
}

.problema .bridge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 44px;
  font-size: 13px;
  letter-spacing: 1.5px;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
}

.problema .bridge svg { animation: bounce-down 1.6s ease-in-out infinite; }

@keyframes bounce-down {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ===== Como trabajo (timeline) ===== */
.como-trabajo h2.section-title { text-align: center; margin-bottom: 20px; }
.como-trabajo p.section-sub {
  text-align: center;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 64px;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -1px;
}

.timeline { max-width: 760px; margin: 0 auto; }

.paso {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  position: relative;
  padding-bottom: 44px;
}

.paso:last-child { padding-bottom: 0; }

.paso-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.paso-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--accent-line);
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.paso-line {
  width: 1px;
  flex: 1;
  background: linear-gradient(var(--accent-line), transparent);
  margin-top: 6px;
}

.paso:last-child .paso-line { display: none; }

.paso-content { padding-top: 6px; }

.paso h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.paso p {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 480px;
}

/* ===== Oferta ===== */
.oferta { text-align: center; }

.oferta-card {
  background: linear-gradient(180deg, rgba(0,212,255,0.055), rgba(0,212,255,0.008));
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-lg);
  padding: 52px 44px;
  max-width: 620px;
  margin: 0 auto;
  text-align: left;
}

.oferta-card .oferta-head { text-align: center; margin-bottom: 32px; }

.oferta-card h2 {
  font-size: 27px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.oferta-card p.oferta-price {
  font-size: 15px;
  color: var(--text-muted);
}

.oferta-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}

.oferta-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
}

.oferta-list svg {
  flex-shrink: 0;
  color: var(--accent);
  margin-top: 2px;
}

.oferta-badge {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(0,212,255,0.07);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.55;
}

.oferta-badge strong { color: var(--text); }
.oferta-badge svg { flex-shrink: 0; color: var(--accent); margin-top: 1px; }

/* ===== Footer ===== */
footer.site-footer {
  padding: 48px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 14px;
  border-top: 1px solid var(--line-soft);
}

footer.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

footer.site-footer .foot-brand {
  margin-bottom: 12px;
}

/* ===== Reveal on scroll ===== */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal[data-split] { opacity: 1; transform: none; }

/* ===== Blog listing ===== */
.page-header { padding: 72px 0 44px; }

.page-header h1 {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.page-header p {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 560px;
}

.listado { padding-bottom: 110px; padding-top: 0; }

.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 34px;
  margin-bottom: 18px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.card:hover {
  transform: translateY(-5px);
  background: var(--card-hover);
  border-color: var(--accent-line);
  box-shadow: 0 16px 40px rgba(0,0,0,0.28);
}

.card .meta {
  color: var(--text-dim);
  font-size: 13px;
  margin-bottom: 10px;
  letter-spacing: 0.3px;
}

.card h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
  letter-spacing: -0.2px;
}

.card p { color: var(--text-muted); font-size: 15px; }

.vacio {
  color: var(--text-muted);
  font-size: 15px;
  padding: 40px 0;
  text-align: center;
  border: 1px dashed var(--line);
  border-radius: var(--radius-lg);
}

/* ===== Article ===== */
.topbar-inner { padding: 0; }

.post-header { padding: 64px 0 28px; }

.post-header h1 {
  font-size: clamp(1.7rem, 3.4vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 14px;
  line-height: 1.2;
}

.post-meta { color: var(--text-dim); font-size: 14px; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 28px;
}
.back-link:hover { color: var(--accent); }

.post-body { padding-bottom: 60px; font-size: 16.5px; line-height: 1.75; }
.post-body p { margin-bottom: 22px; color: var(--text); }
.post-body p:first-of-type::first-letter {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3.6em;
  font-weight: 700;
  float: left;
  line-height: 0.85;
  margin: 6px 10px 0 0;
  color: var(--accent);
}

.fuente {
  margin: 32px 0 60px;
  padding: 18px 22px;
  border-left: 3px solid var(--accent);
  background: rgba(0,212,255,0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14px;
  color: var(--text-muted);
}
.fuente a { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .fases, .beneficios-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .topnav .nav-inner { gap: 20px; }
  .topnav .nav-inner a { font-size: 13px; }
  .hero h1 { font-size: 2rem; letter-spacing: -0.5px; }
  .section-title { font-size: 26px; }
  .oferta-card h2 { font-size: 22px; }
  .oferta-card { padding: 36px 26px; }
  .problema p.statement { font-size: 19px; }
  .beneficios-grid { grid-template-columns: 1fr; }
  section { padding: 68px 0; }
  .problema-mark { font-size: 120px; }
}