/* Sakorai corporate site — product-led B2B messaging platform */
:root {
  /* Default (Light) Theme Variables */
  --corp-ink: #14241f;
  --corp-muted: #65736d;
  --corp-paper: #f8faf9;
  --corp-white: #ffffff;
  --corp-green: #22c55e;
  --corp-green-hover: #16a34a;
  --corp-green-glow: rgba(34, 197, 94, 0.2);
  --corp-deep: #153b30;
  --corp-line: rgba(20, 36, 31, 0.1);
  --corp-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  
  --bg-color: #f8faf9;
  --text-color: #14241f;
  --text-muted: #5e6b66;
  --border-color: rgba(20, 36, 31, 0.08);
  --card-bg: #ffffff;
  --card-shadow: 0 10px 30px rgba(0,0,0,0.05);
  
  --hero-bg: #f0f4f1;
  --hero-text: #06130d;
  --hero-badge-border: rgba(34, 197, 94, 0.4);
  --hero-badge-bg: rgba(34, 197, 94, 0.1);
  --hero-badge-text: #16a34a;
  --button-outline-border: rgba(20, 36, 31, 0.15);
  --button-outline-text: #14241f;
  
  --section-alt-bg: #ffffff;
  
  --code-bg: #0d1a15;
  --code-header-bg: #152921;
  --code-border: rgba(255,255,255,0.1);
  --code-text: #e0e9dd;
  --code-tab-active: #ffffff;
  --code-tab-inactive: #8ca398;
}

:root[data-theme="dark"] {
  --corp-ink: #ffffff;
  --corp-muted: #94a39d;
  --corp-paper: #06130d;
  --corp-white: #112119;
  --corp-green: #25d366; /* WhatsApp bright green */
  --corp-green-hover: #48e27f;
  --corp-green-glow: rgba(37, 211, 102, 0.15);
  --corp-deep: #0a1f16;
  --corp-line: rgba(255, 255, 255, 0.1);
  
  --bg-color: #06130d;
  --text-color: #ffffff;
  --text-muted: #94a39d;
  --border-color: rgba(255,255,255,0.1);
  --card-bg: #0d2117;
  --card-shadow: 0 20px 40px rgba(0,0,0,0.4);
  
  --hero-bg: #06130d;
  --hero-text: #ffffff;
  --hero-badge-border: rgba(37, 211, 102, 0.4);
  --hero-badge-bg: rgba(37, 211, 102, 0.1);
  --hero-badge-text: #25d366;
  --button-outline-border: rgba(255,255,255,0.26);
  --button-outline-text: #ffffff;
  
  --section-alt-bg: #0a1b13;
  
  --code-bg: #09150f;
  --code-header-bg: #0d1e16;
  --code-border: rgba(255,255,255,0.08);
  --code-text: #e0e9dd;
  --code-tab-active: #ffffff;
  --code-tab-inactive: #6b8276;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
  transition: background 0.3s ease, color 0.3s ease;
}

/* Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }

/* Header Tweaks */
.site-header {
  position: absolute;
  inset: 0 0 auto;
  color: var(--text-color);
  background: transparent;
  z-index: 50;
  width: 100%;
}
.header-inner {
  height: 86px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
}
.main-nav {
  display: flex;
  justify-content: space-between;
  width: 100%;
  align-items: center;
  font-size: 13px;
  font-weight: 500;
  margin-left: 40px;
  text-transform: none;
  letter-spacing: 0;
}
.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-right {
  gap: 24px;
}
.main-nav a {
  opacity: 0.85;
  transition: opacity 0.2s, color 0.2s;
}
.main-nav a:hover {
  opacity: 1;
  color: var(--corp-green);
}
.nav-cta {
  background: var(--corp-green);
  color: #06130d !important;
  padding: 10px 20px;
  border-radius: 40px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  opacity: 1 !important;
  transition: transform 0.2s, background 0.2s !important;
}
.nav-cta:hover {
  transform: translateY(-2px);
  background: var(--corp-green-hover);
}
.theme-toggle {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
  transition: opacity 0.2s, transform 0.2s;
  border-radius: 50%;
}
.theme-toggle:hover {
  opacity: 1;
  background: var(--border-color);
}
.brand {
  display: flex;
  align-items: center;
  font: 700 22px/1 var(--sans);
  letter-spacing: -0.05em;
}
.brand-mark {
  display: inline-grid;
  width: 28px;
  height: 28px;
  background: var(--corp-green);
  border-radius: 50%;
  color: #06130d;
  font: italic 700 17px var(--serif);
  margin-right: 8px;
  place-items: center;
}

/* Base Sections */
.corp-site { overflow: hidden; }
.corp-hero {
  position: relative;
  min-height: 750px;
  padding: 130px 0 60px;
  background: var(--hero-bg);
  color: var(--hero-text);
  display: flex;
  align-items: center;
}
.corp-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4%;
  align-items: center;
}
.corp-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--hero-badge-border);
  background: var(--hero-badge-bg);
  color: var(--hero-badge-text);
  border-radius: 40px;
  font: 600 10px/1.5 var(--corp-mono);
  letter-spacing: 0.08em;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.corp-pulse {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--corp-green);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--corp-green-glow);
  animation: pulse-ring 2s infinite;
}
@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 var(--corp-green-glow); }
  70% { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.corp-hero h1 {
  margin: 0;
  font: 500 clamp(48px, 5.5vw, 76px)/1.05 var(--sans);
  letter-spacing: -0.04em;
}
.corp-hero h1 em, .highlight {
  color: var(--corp-green);
  font-style: normal;
  font-weight: 500;
}
.corp-lede {
  max-width: 480px;
  margin: 24px 0 32px;
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.6;
}

.corp-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}
.corp-button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 24px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
  cursor: pointer;
}
.corp-button-green {
  background: var(--corp-green);
  color: #06130d;
}
.corp-button-green:hover {
  background: var(--corp-green-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--corp-green-glow);
}
.corp-button-quiet {
  border: 1px solid var(--button-outline-border);
  color: var(--button-outline-text);
  background: transparent;
}
.corp-button-quiet:hover {
  background: var(--border-color);
  transform: translateY(-2px);
}

.corp-hero-checks {
  display: flex;
  gap: 20px;
  font-size: 12px;
  color: var(--text-muted);
}
.corp-hero-checks span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.corp-hero-checks span::before {
  content: "✓";
  color: var(--corp-green);
  font-weight: bold;
}

/* Hero Visual Setup */
.corp-visual {
  position: relative;
  width: 100%;
  height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.corp-visual img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
}
.corp-visual .visual-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 90%;
  z-index: 1;
}
.corp-visual .visual-fg {
  position: absolute;
  top: 60px;
  right: -20px;
  width: 45%;
  z-index: 2;
  transform: translateY(20px);
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0px); }
}

/* Sub-hero feature bar */
.corp-trust {
  padding: 40px 0;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-color);
}
.corp-trust-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
}
.trust-icon {
  width: 36px;
  height: 36px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: var(--corp-green);
}
.trust-text {
  display: flex;
  flex-direction: column;
}
.trust-text strong {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-color);
}
.trust-text span {
  font-size: 11px;
  color: var(--text-muted);
}

/* General Section Setup */
.corp-section {
  padding: 120px 0;
  background: var(--bg-color);
}
.corp-section-alt {
  background: var(--section-alt-bg);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 600 10px/1.5 var(--corp-mono);
  letter-spacing: 0.1em;
  color: var(--text-color);
  text-transform: uppercase;
  margin-bottom: 24px;
}
.section-tag::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--corp-green);
  border-radius: 50%;
}

.corp-section h2 {
  font: 500 clamp(40px, 4vw, 56px)/1.1 var(--sans);
  letter-spacing: -0.03em;
  margin: 0 0 20px;
}
.corp-section h2 em {
  color: var(--corp-green);
  font-style: normal;
}
.corp-section-desc {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 500px;
  line-height: 1.6;
  margin-bottom: 30px;
}

/* Section 1: Como Funciona */
.grid-2-col {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 8%;
  align-items: center;
}
.flow-diagram {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--card-shadow);
}
.flow-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.flow-col.main-col {
  flex: 1.2;
}
.flow-col-title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
  text-align: center;
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
}
.flow-item {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}
.flow-item.main {
  background: var(--corp-green-glow);
  border-color: var(--corp-green);
  color: var(--text-color);
  padding: 24px;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-radius: 12px;
}
.flow-main-checks {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  text-align: left;
}
.flow-main-checks span {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}
.flow-main-checks span svg {
  color: var(--corp-green);
}
.flow-item.end-col {
  background: var(--bg-color);
  border-color: var(--border-color);
  color: var(--text-color);
  padding: 24px;
  flex-direction: column;
  align-items: center;
  border-radius: 12px;
}
.flow-end-checks {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  font-size: 11px;
  color: var(--text-muted);
}
.flow-end-checks span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.flow-end-checks span::before {
  content: "✓";
  color: var(--corp-green);
}
.flow-arrow {
  display: flex;
  align-items: center;
  color: var(--text-muted);
}

/* Code Section */
.code-interactive-card {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 24px 50px rgba(0,0,0,0.5);
}
.code-header {
  display: flex;
  background: var(--code-header-bg);
  border-bottom: 1px solid var(--code-border);
  padding: 0 8px;
  overflow-x: auto;
}
.corp-tab-btn {
  background: transparent;
  border: none;
  color: var(--code-tab-inactive);
  padding: 14px 20px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.2s;
  white-space: nowrap;
}
.corp-tab-btn:hover { color: #fff; }
.corp-tab-btn.active {
  color: var(--code-tab-active);
  background: rgba(255,255,255,0.05);
  border-bottom: 2px solid var(--corp-green);
}
.code-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 300px;
}
.corp-code-panel {
  display: none;
  padding: 24px;
  font: 13px/1.6 var(--corp-mono);
  color: var(--code-text);
  overflow-x: auto;
}
.corp-code-panel.active {
  display: block;
}
.code-body > div:last-child {
  border-left: 1px solid var(--code-border);
  background: rgba(0,0,0,0.2);
}
.code-top-bar {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
  font-size: 12px;
  color: #8ca398;
}
.code-top-bar span.method { color: #f472b6; font-weight: bold; }

/* Observabilidad */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 16px;
  border-radius: 12px;
  text-align: center;
}
.stat-val { font-size: 20px; font-weight: 600; margin: 8px 0 4px; }
.stat-label { font-size: 11px; color: var(--text-muted); }
.stat-icon { font-size: 18px; }

.observability-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.timeline-card, .whatsapp-preview {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
}
.timeline-header {
  font-size: 12px;
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
  margin-bottom: 16px;
}
.timeline-step {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  font-size: 13px;
}
.timeline-time { color: var(--text-muted); font: 12px var(--corp-mono); }
.timeline-dot {
  width: 10px;
  height: 10px;
  background: var(--corp-green);
  border-radius: 50%;
  margin-top: 4px;
  position: relative;
}
.timeline-dot.active-dot {
  box-shadow: 0 0 0 4px var(--corp-green-glow);
}
.timeline-dot::after {
  content: "";
  position: absolute;
  top: 10px; left: 4px;
  width: 2px; height: 26px;
  background: var(--border-color);
}
.timeline-step:last-child .timeline-dot::after { display: none; }

/* Casos de uso */
.use-cases-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 20px;
}
.use-case-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s, box-shadow 0.3s;
}
.use-case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow);
}
.use-case-icon {
  width: 48px; height: 48px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: grid; place-items: center;
  margin-bottom: 20px;
  font-size: 20px;
}
.use-case-card h3 { font-size: 18px; margin: 0 0 16px; }
.use-case-list {
  list-style: none; padding: 0; margin: 0 0 24px;
  flex: 1;
}
.use-case-list li {
  font-size: 13px; color: var(--text-muted);
  margin-bottom: 8px;
  display: flex; gap: 8px; align-items: center;
}
.use-case-list li::before { content: "✓"; color: var(--corp-green); font-weight: bold; }
.use-case-mock {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  padding: 12px;
  border-radius: 8px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-color);
}
.use-case-mock .time { display: block; text-align: right; color: var(--text-muted); font-size: 10px; margin-top: 8px;}

/* Seguridad */
.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8%;
  align-items: center;
}
.security-list { display: flex; flex-direction: column; gap: 24px; }
.sec-item { display: flex; gap: 16px; align-items: flex-start; }
.sec-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  border: 1px solid var(--corp-green);
  color: var(--corp-green);
  display: grid; place-items: center;
}
.sec-text h3 { margin: 0 0 6px; font-size: 16px; }
.sec-text p { margin: 0; font-size: 13px; color: var(--text-muted); }

/* CTA Bottom */
.corp-cta {
  padding: 100px 0;
  text-align: center;
  background: var(--hero-bg);
  border-top: 1px solid var(--border-color);
}
.corp-cta-inner { max-width: 600px; margin: auto; display: flex; flex-direction: column; align-items: center; }
.corp-cta h2 { font: 500 clamp(36px, 4vw, 52px)/1.1 var(--sans); margin-bottom: 16px; }
.corp-cta h2 .highlight { color: var(--corp-green); }

/* Footer Adjustments */
.site-footer {
  padding: 60px 0 30px;
  background: var(--bg-color);
  border-top: 1px solid var(--border-color);
  color: var(--text-color);
}
.footer-top { border-bottom: 1px solid var(--border-color); padding-bottom: 40px; margin-bottom: 30px; }

/* Scroll to Top */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--corp-green);
  color: #06130d;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(34, 197, 94, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 100;
}
.scroll-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.scroll-to-top:hover {
  background: var(--corp-green-hover);
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(34, 197, 94, 0.6);
}

@media (max-width: 1024px) {
  .corp-hero-inner { grid-template-columns: 1fr; text-align: center; gap: 40px; }
  .corp-hero-copy { display: flex; flex-direction: column; align-items: center; }
  .corp-lede { text-align: center; }
  .grid-2-col, .security-grid { grid-template-columns: 1fr; gap: 40px; }
  .use-cases-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .observability-split { grid-template-columns: 1fr; }
  .code-body { grid-template-columns: 1fr; }
  .code-body > div:last-child { border-left: none; border-top: 1px solid var(--code-border); }
}
@media (max-width: 600px) {
  .use-cases-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .corp-hero h1 { font-size: 40px; }
  .corp-visual { height: auto; display: none; /* Hide complex hero visual on mobile to simplify */ }
  .main-nav { display: none; } /* existing toggle logic handles this */
}