/* ============================================================
   ENGIPRODUCTS LLC — Titanium Black Design System
   Vanilla CSS · No frameworks
   ============================================================ */

:root {
  --background: #0A0A0A;
  --surface: #121212;
  --surface-2: #1c1c1c;
  --card: #161616;
  --foreground: #fafafa;
  --silver: #B0BEC5;
  --muted: #2a2a2a;
  --muted-foreground: #8a949a;
  --border: rgba(255,255,255,.08);
  --input: rgba(255,255,255,.10);

  --primary: #00E676;
  --primary-foreground: #0A0A0A;
  --primary-glow: #4dffa5;

  --accent: #00B4D8;
  --accent-foreground: #0A0A0A;

  --destructive: #ef4444;

  --font-display: "Space Grotesk", "Helvetica Neue", sans-serif;
  --font-sans: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --radius-sm: 2px;
  --radius-md: 4px;
}

* { box-sizing: border-box; margin: 0; padding: 0; border-color: var(--border); }
*::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background-color: var(--background);
  color: var(--silver);
  font-family: var(--font-sans);
  font-feature-settings: "ss01","cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(0,230,118,.08), transparent 60%),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(0,180,216,.06), transparent 60%);
  background-attachment: fixed;
}

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

h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-display);
  color: var(--foreground);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

a { color: inherit; text-decoration: none; transition: color .25s ease; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }

::selection { background: rgba(0,230,118,.4); color: var(--foreground); }

/* ====== Layout ====== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
@media (min-width: 1024px) { .container { padding: 0 40px; } }

.section { position: relative; padding: 96px 0; border-top: 1px solid var(--border); }
.section--hero { padding: 0; border-top: 0; }
.section--surface { background: rgba(18,18,18,.45); }
.divider-top { border-top: 1px solid var(--border); }

.grid { display: grid; gap: 24px; }
.grid-2 { display: grid; gap: 24px; }
.grid-3 { display: grid; gap: 24px; }
.grid-4 { display: grid; gap: 24px; }
@media (min-width: 900px) {
  .grid-2 { grid-template-columns: 1fr 1fr; gap: 32px; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); gap: 40px; }
}

.eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.72rem;
  color: var(--primary);
  display: inline-block;
}
.eyebrow--cyan { color: var(--accent); }

.text-gradient-tech {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hairline {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,180,216,.6), rgba(0,230,118,.6), transparent);
}

.lead-line { display: flex; align-items: center; gap: 12px; }
.lead-line__rule { width: 40px; height: 1px; background: var(--primary); display: block; }
.lead-line__rule--cyan { background: var(--accent); }

/* ====== Buttons ====== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 48px; padding: 0 24px;
  font-family: var(--font-mono);
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.22em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all .3s ease;
  white-space: nowrap;
}
.btn--primary { background: var(--primary); color: var(--primary-foreground); }
.btn--primary:hover { box-shadow: 0 0 40px -4px var(--primary); transform: translateY(-1px); }
.btn--cyan-outline {
  border-color: rgba(0,180,216,.5);
  background: rgba(0,180,216,.05);
  color: var(--accent);
}
.btn--cyan-outline:hover {
  box-shadow: inset 0 0 0 1px rgba(0,180,216,.35), 0 0 24px -8px rgba(0,180,216,.5);
  color: var(--foreground);
}
.btn--ghost {
  border: 1px solid var(--border);
  color: var(--silver);
  background: var(--surface);
}
.btn--ghost:hover { color: var(--primary); border-color: rgba(0,230,118,.4); }
.btn--sm { height: 36px; padding: 0 16px; font-size: 0.7rem; }

.arrow-icon { display: inline-block; transition: transform .25s ease; }
.btn:hover .arrow-icon { transform: translate(2px, -2px); }

/* ====== Navbar ====== */
.navbar {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background .3s ease, backdrop-filter .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}
.navbar.is-scrolled {
  background: rgba(10,10,10,.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}
.navbar__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 80px;
  max-width: 1280px; margin: 0 auto; padding: 0 20px;
}
@media (min-width: 1024px) { .navbar__inner { padding: 0 40px; } }

.logo { display: inline-flex; align-items: center; gap: 10px; }
.logo__dot {
  position: relative; display: inline-block; width: 10px; height: 10px;
}
.logo__dot::before, .logo__dot::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--primary);
}
.logo__dot::before { animation: pulse-dot 2s ease-in-out infinite; }
.logo__dot::after { filter: blur(8px); opacity: .6; }
.logo__name {
  font-family: var(--font-display);
  font-weight: 600; font-size: 0.95rem;
  letter-spacing: 0.18em; color: var(--foreground);
}
.logo__name span { color: var(--primary); }

.nav-list { display: none; align-items: center; gap: 32px; list-style: none; }
@media (min-width: 1024px) { .nav-list { display: flex; } }
.nav-list a {
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--silver);
}
.nav-list a:hover { color: var(--foreground); }
.nav-list a.is-active { color: var(--primary); }
.nav-list a::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 0; height: 1px; background: var(--primary);
  transition: width .3s ease;
}
.nav-list a:hover::after, .nav-list a.is-active::after { width: 100%; }

.nav-cta { display: none; }
@media (min-width: 1024px) { .nav-cta { display: inline-flex; } }
.nav-cta {
  height: 36px; padding: 0 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0,230,118,.4);
  background: rgba(0,230,118,.1);
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase;
  align-items: center; gap: 8px;
}
.nav-cta:hover { background: var(--primary); color: var(--primary-foreground); }

.nav-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--foreground);
}
@media (min-width: 1024px) { .nav-toggle { display: none; } }
.nav-toggle svg { width: 18px; height: 18px; }
.nav-toggle__close { display: none; }
.nav-toggle.is-open .nav-toggle__open { display: none; }
.nav-toggle.is-open .nav-toggle__close { display: block; }

.mobile-nav {
  display: none;
  border-top: 1px solid var(--border);
  background: rgba(10,10,10,.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.mobile-nav.is-open { display: block; }
.mobile-nav__list {
  list-style: none;
  display: flex; flex-direction: column; gap: 4px;
  padding: 24px 20px;
  max-width: 1280px; margin: 0 auto;
}
.mobile-nav__list a {
  display: block;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--silver);
}
.mobile-nav__list a:hover { background: var(--surface); color: var(--primary); }

main { padding-top: 64px; min-height: 60vh; }

/* ====== Hero ====== */
.hero {
  position: relative; overflow: hidden;
}
.hero__bg { position: absolute; inset: 0; z-index: -1; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.55; }
.hero__overlay { position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(10,10,10,.6) 0%, rgba(10,10,10,.7) 50%, var(--background) 100%);
}
.hero__inner {
  display: grid; place-items: center;
  max-width: 1280px; margin: 0 auto;
  padding: 112px 20px 96px;
  min-height: 92vh;
}
@media (min-width: 1024px) { .hero__inner { padding-left: 40px; padding-right: 40px; } }

.hero__title {
  margin-top: 24px;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1.05; font-weight: 600;
  color: var(--foreground);
}
.hero__sub {
  margin-top: 28px; max-width: 640px;
  font-size: 1rem; color: var(--silver);
}
@media (min-width: 1024px) { .hero__sub { font-size: 1.125rem; } }
.hero__actions {
  margin-top: 40px;
  display: flex; flex-wrap: wrap; gap: 16px;
}
.hero__stats {
  margin-top: 64px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px 40px;
  max-width: 720px;
}
@media (min-width: 640px) { .hero__stats { grid-template-columns: repeat(4, 1fr); } }
.stat { border-left: 1px solid var(--border); padding-left: 16px; }
.stat__k { font-family: var(--font-display); font-size: 1.5rem; font-weight: 600; color: var(--foreground); }
.stat__v {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--muted-foreground);
}

.scan-line {
  position: absolute; inset: 64px 0 auto 0; height: 80vh;
  overflow: hidden; pointer-events: none; z-index: -1;
}
.scan-line__bar {
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,230,118,.6), transparent);
  animation: scan-line 6s linear infinite;
}

.grid-hud {
  background-image:
    linear-gradient(to right, rgba(0,180,216,.1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0,180,216,.1) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 80%);
          mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 80%);
}
.grid-hud--full { position: absolute; inset: 0; z-index: -1; opacity: .3; }

.bg-polymer { position: relative; isolation: isolate; }
.bg-polymer::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    repeating-linear-gradient(135deg, rgba(255,255,255,.04) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(45deg, rgba(255,255,255,.02) 0 1px, transparent 1px 6px);
  opacity: .5;
  mix-blend-mode: screen;
}

/* ====== Cards ====== */
.section-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 24px; }
.section-title {
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 600; line-height: 1.15;
  max-width: 800px;
}

.divisions { margin-top: 56px; }
.division-card {
  position: relative; overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 32px;
  transition: border-color .3s ease;
}
@media (min-width: 1024px) { .division-card { padding: 40px; } }
.division-card:hover { border-color: rgba(0,230,118,.4); }
.division-card--cyan:hover { border-color: rgba(0,180,216,.4); }
.division-card__head { display: flex; align-items: center; justify-content: space-between; }
.division-card__title {
  margin-top: 24px;
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 600;
  color: var(--foreground); line-height: 1.25;
}
@media (min-width: 1024px) { .division-card__title { font-size: 1.875rem; } }
.division-card__body { margin-top: 20px; font-size: 0.875rem; color: var(--silver); }
.division-card__link {
  margin-top: 32px; display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--primary);
}
.division-card--cyan .division-card__link { color: var(--accent); }
.division-card__glow {
  position: absolute; right: -32px; top: -32px;
  width: 128px; height: 128px; border-radius: 50%;
  background: rgba(0,230,118,.1); filter: blur(48px);
  transition: background .3s ease;
}
.division-card--cyan .division-card__glow { background: rgba(0,180,216,.1); }
.division-card:hover .division-card__glow { background: rgba(0,230,118,.2); }
.division-card--cyan:hover .division-card__glow { background: rgba(0,180,216,.2); }

/* Book cards (home) */
.book-grid { margin-top: 56px; display: grid; gap: 32px; }
@media (min-width: 900px) { .book-grid { grid-template-columns: 1fr 1fr; } }
.book-card {
  position: relative; overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--card);
  transition: border-color .3s ease;
}
.book-card:hover { border-color: rgba(255,255,255,.3); }
.book-card__media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.book-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.book-card:hover .book-card__media img { transform: scale(1.05); }
.book-card__media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(10,10,10,.9) 0%, transparent 50%);
}
.book-card__body { padding: 28px; }
.book-card__badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: var(--radius-sm);
  border: 1px solid rgba(0,230,118,.5);
  background: rgba(0,230,118,.1);
  color: var(--primary);
  font-family: var(--font-mono); font-size: 0.62rem;
  text-transform: uppercase; letter-spacing: 0.22em;
}
.book-card__badge--cyan {
  border-color: rgba(0,180,216,.5);
  background: rgba(0,180,216,.1);
  color: var(--accent);
}
.book-card__title {
  margin-top: 16px;
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 600;
  color: var(--foreground);
}
.book-card__copy { margin-top: 12px; font-size: 0.875rem; color: var(--silver); }
.book-card__cta {
  margin-top: 24px; display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--primary);
}
.book-card--cyan .book-card__cta { color: var(--accent); }

/* Insight cards */
.insight-grid { margin-top: 48px; display: grid; gap: 20px; }
@media (min-width: 900px) { .insight-grid { grid-template-columns: repeat(3, 1fr); } }
.insight-card {
  display: block; height: 100%;
  padding: 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--card);
  transition: border-color .3s ease;
  position: relative; overflow: hidden;
}
.insight-card:hover { border-color: rgba(255,255,255,.3); }
.insight-card__tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.62rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--primary);
}
.insight-card--cyan .insight-card__tag { color: var(--accent); }
.insight-card__title {
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: 1.125rem; font-weight: 600;
  color: var(--foreground); line-height: 1.35;
}
.insight-card__excerpt { margin-top: 16px; font-size: 0.875rem; color: var(--silver); }
.insight-card__foot {
  margin-top: 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.insight-card__meta {
  font-family: var(--font-mono); font-size: 0.62rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--muted-foreground);
}
.insight-card__read {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 0.65rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--primary);
}
.insight-card--cyan .insight-card__read { color: var(--accent); }
.insight-card__bar {
  position: absolute; left: 0; bottom: -1px;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0; transition: opacity .3s ease;
}
.insight-card--cyan .insight-card__bar {
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.insight-card:hover .insight-card__bar { opacity: 1; }

/* Avatar feed */
.proof-grid { margin-top: 24px; display: grid; gap: 12px; grid-template-columns: repeat(3, 1fr); }
.proof-cell {
  position: relative; aspect-ratio: 1; overflow: hidden;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface);
}
.proof-cell__grid { position: absolute; inset: 0; opacity: .4; }
.proof-cell__label {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 0.55rem;
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--muted-foreground);
}
.proof-cell__bar {
  position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,230,118,.6), transparent);
}

/* CTA Banner */
.cta-banner {
  position: relative; overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: linear-gradient(135deg, var(--surface), var(--card));
  padding: 40px;
}
@media (min-width: 1024px) { .cta-banner { padding: 64px; } }
.cta-banner__grid {
  display: grid; gap: 32px; align-items: center; position: relative;
}
@media (min-width: 1024px) { .cta-banner__grid { grid-template-columns: 1.4fr 1fr; } }
.cta-banner__actions { display: flex; flex-wrap: wrap; gap: 12px; }
@media (min-width: 1024px) { .cta-banner__actions { justify-content: flex-end; } }

/* ====== Page hero (interior) ====== */
.page-hero {
  position: relative; border-bottom: 1px solid var(--border);
  padding: 96px 0;
}
@media (min-width: 1024px) { .page-hero { padding: 128px 0; } }
.page-hero__inner { position: relative; }
.page-hero__title {
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 600; line-height: 1.05;
  color: var(--foreground); max-width: 980px;
}
.page-hero__sub {
  margin-top: 28px; max-width: 640px;
  font-size: 1rem; color: var(--silver);
}
@media (min-width: 1024px) { .page-hero__sub { font-size: 1.125rem; } }
.page-hero__actions { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 12px; }

/* About */
.about-hero-grid { display: grid; gap: 56px; align-items: center; }
@media (min-width: 1024px) {
  .about-hero-grid { grid-template-columns: 1.1fr 1fr; gap: 64px; }
}
.framed { position: relative; }
.framed::before {
  content: ""; position: absolute; inset: -12px;
  border: 1px solid var(--border); border-radius: var(--radius-md);
}
.framed__corner-tr {
  position: absolute; right: -12px; top: -12px;
  width: 96px; height: 96px;
  border-right: 1px solid rgba(0,230,118,.6);
  border-top: 1px solid rgba(0,230,118,.6);
}
.framed__corner-bl {
  position: absolute; left: -12px; bottom: -12px;
  width: 96px; height: 96px;
  border-bottom: 1px solid rgba(0,180,216,.6);
  border-left: 1px solid rgba(0,180,216,.6);
}
.framed__media {
  position: relative; aspect-ratio: 3 / 4; overflow: hidden;
  border-radius: var(--radius-sm); border: 1px solid var(--border);
}
.framed__media--wide { aspect-ratio: 4 / 5; }
.framed__media img { width: 100%; height: 100%; object-fit: cover; }
.framed__caption {
  position: absolute; left: 20px; right: 20px; bottom: 20px;
  display: flex; justify-content: space-between;
  font-family: var(--font-mono); font-size: 0.6rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--silver);
}
.framed__caption .rec { color: var(--primary); }
.framed__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(10,10,10,.7), transparent);
}

.about-grid { display: grid; gap: 40px; }
@media (min-width: 700px) { .about-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .about-grid { grid-template-columns: repeat(4, 1fr); } }
.about-card {
  height: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border); background: var(--card);
  padding: 28px;
}
.about-card__head {
  display: flex; align-items: center; gap: 8px;
  color: var(--accent);
  font-family: var(--font-mono); font-size: 0.62rem;
  text-transform: uppercase; letter-spacing: 0.22em;
}
.about-card__title {
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: 1.125rem; font-weight: 600;
  color: var(--foreground); line-height: 1.35;
}
.about-card__body { margin-top: 16px; font-size: 0.875rem; color: var(--silver); }

.research-grid { display: grid; gap: 48px; }
@media (min-width: 900px) { .research-grid { grid-template-columns: 1fr 1fr; } }
.research-list { list-style: none; display: flex; flex-direction: column; gap: 16px; }
.research-list li {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 0.875rem; color: var(--silver);
}
.research-list .bullet {
  margin-top: 6px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
  flex-shrink: 0;
}

/* Editorial detail blocks */
.book-block-grid {
  display: grid; gap: 56px; align-items: center;
}
@media (min-width: 900px) { .book-block-grid { grid-template-columns: 1fr 1fr; gap: 64px; } }
.book-block-grid--reverse-md > :first-child { order: 1; }
@media (min-width: 900px) {
  .book-block-grid--reverse-md > :first-child { order: 2; }
  .book-block-grid--reverse-md > :last-child { order: 1; }
}
.book-block__badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0,230,118,.5);
  background: rgba(0,230,118,.1);
  color: var(--primary);
  font-family: var(--font-mono); font-size: 0.65rem;
  text-transform: uppercase; letter-spacing: 0.22em;
}
.book-block__badge--cyan {
  border-color: rgba(0,180,216,.5);
  background: rgba(0,180,216,.1);
  color: var(--accent);
}
.book-block__title {
  margin-top: 24px;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 600; line-height: 1.15;
  color: var(--foreground);
}
.book-block__copy { margin-top: 24px; font-size: 1rem; color: var(--silver); }
.book-block__list {
  margin-top: 32px; list-style: none;
  display: flex; flex-direction: column; gap: 10px;
  font-size: 0.875rem; color: var(--silver);
}
.book-block__list li { display: flex; align-items: flex-start; gap: 10px; }
.book-block__list li::before {
  content: ""; margin-top: 8px; height: 4px; width: 16px;
  background: var(--primary); flex-shrink: 0;
}
.book-block--cyan .book-block__list li::before { background: var(--accent); }

/* Contact */
.contact-grid { display: grid; gap: 40px; }
@media (min-width: 1024px) { .contact-grid { grid-template-columns: 1fr 1.4fr; } }
.info-card {
  padding: 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--card);
}
.info-card__title {
  margin-top: 12px;
  font-family: var(--font-display);
  font-size: 1.125rem; font-weight: 600; color: var(--foreground);
}
.info-card__list {
  margin-top: 20px; list-style: none;
  display: flex; flex-direction: column; gap: 16px;
  font-size: 0.875rem; color: var(--silver);
}
.info-card__list li { display: flex; gap: 12px; }
.info-card__list svg { flex-shrink: 0; margin-top: 2px; color: var(--accent); }
.info-card__list a:hover { color: var(--primary); }

.form-card {
  padding: 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--card);
}
@media (min-width: 1024px) { .form-card { padding: 40px; } }
.form-grid { display: grid; gap: 20px; }
@media (min-width: 640px) { .form-grid { grid-template-columns: 1fr 1fr; } }
.field { display: block; }
.field--full { grid-column: 1 / -1; }
.field__label {
  display: block; margin-bottom: 8px;
  font-family: var(--font-mono); font-size: 0.62rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--silver);
}
.field__input {
  width: 100%; height: 44px; padding: 0 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--background);
  color: var(--foreground);
  font-size: 0.875rem;
  outline: none;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.field__input::placeholder { color: rgba(138,148,154,.7); }
.field__input:focus {
  border-color: rgba(0,230,118,.6);
  box-shadow: 0 0 0 1px rgba(0,230,118,.4);
}
textarea.field__input { min-height: 140px; padding: 12px 14px; height: auto; resize: vertical; }
.field__error { display: block; margin-top: 6px; font-size: 0.75rem; color: var(--destructive); }
.form-foot {
  margin-top: 32px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px;
}
.form-foot__note {
  font-family: var(--font-mono); font-size: 0.6rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--muted-foreground);
}
.form-alert {
  display: none;
  align-items: center; gap: 12px;
  padding: 16px; margin-bottom: 24px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0,230,118,.4);
  background: rgba(0,230,118,.1);
  color: var(--primary);
  font-size: 0.875rem;
}
.form-alert.is-visible { display: flex; }

/* Legal pages */
.legal { max-width: 768px; margin: 0 auto; padding: 96px 20px; }
@media (min-width: 1024px) { .legal { padding-top: 128px; padding-bottom: 128px; } }
.legal__title {
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600; line-height: 1.15;
  color: var(--foreground);
}
.legal__meta {
  margin-top: 12px;
  font-family: var(--font-mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--muted-foreground);
}
.legal__meta p { margin-bottom: 4px; }
.legal-section { margin-top: 40px; }
.legal-section:first-of-type { margin-top: 0; }
.legal-section__head { display: flex; align-items: baseline; gap: 16px; }
.legal-section__n {
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--primary);
}
.legal-section__title {
  font-family: var(--font-display);
  font-size: 1.25rem; font-weight: 600; color: var(--foreground);
}
.legal-section__body {
  margin-top: 16px;
  font-size: 0.875rem; color: var(--silver); line-height: 1.7;
}

/* ====== Footer ====== */
.footer {
  position: relative;
  margin-top: 128px;
  border-top: 1px solid var(--border);
  background: rgba(18,18,18,.4);
}
.footer__top {
  display: grid; gap: 48px;
  max-width: 1280px; margin: 0 auto; padding: 64px 20px;
}
@media (min-width: 1024px) {
  .footer__top { grid-template-columns: 2fr 1fr 1fr; padding: 64px 40px; }
}
.footer__brand { display: flex; align-items: center; gap: 10px; }
.footer__brand-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--primary); box-shadow: 0 0 12px var(--primary);
}
.footer__brand-name {
  font-family: var(--font-display);
  font-size: 1rem; font-weight: 600;
  letter-spacing: 0.18em; color: var(--foreground);
}
.footer__about { max-width: 480px; margin-top: 20px; font-size: 0.875rem; color: var(--silver); }
.footer__social { margin-top: 24px; display: flex; gap: 12px; }
.footer__social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--silver);
  transition: all .25s ease;
}
.footer__social a:hover { border-color: rgba(0,230,118,.5); color: var(--primary); }
.footer__social a.cyan:hover { border-color: rgba(0,180,216,.5); color: var(--accent); }

.footer__col h4 { margin-bottom: 20px; }
.footer__col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; font-size: 0.875rem; }
.footer__col a { color: var(--silver); }
.footer__col a:hover { color: var(--primary); }
.footer__contact-list { list-style: none; display: flex; flex-direction: column; gap: 12px; font-size: 0.875rem; color: var(--silver); }
.footer__contact-list li { display: flex; gap: 8px; }
.footer__contact-list svg { flex-shrink: 0; margin-top: 2px; color: var(--accent); }
.footer__trademark {
  margin-top: 20px;
  font-family: var(--font-mono); font-size: 0.65rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--muted-foreground);
}
.footer__bottom {
  border-top: 1px solid var(--border);
}
.footer__bottom-inner {
  display: flex; flex-direction: column; gap: 8px;
  max-width: 1280px; margin: 0 auto; padding: 20px;
  font-size: 0.75rem; color: var(--muted-foreground);
}
@media (min-width: 1024px) {
  .footer__bottom-inner { flex-direction: row; align-items: center; justify-content: space-between; padding: 20px 40px; }
}
.footer__bottom-inner p:last-child { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.2em; }

/* ====== WhatsApp FAB ====== */
.whatsapp-fab {
  position: fixed; right: 24px; bottom: 24px; z-index: 40;
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--primary); color: var(--primary-foreground);
  box-shadow: 0 8px 30px -4px var(--primary);
  transition: transform .25s ease, box-shadow .25s ease;
}
.whatsapp-fab:hover { transform: scale(1.1); box-shadow: 0 12px 40px -4px var(--primary); }
.whatsapp-fab::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  background: var(--primary); opacity: .3; filter: blur(16px);
  z-index: -1;
}

/* ====== Reveal Animation ====== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s ease-out, transform .8s cubic-bezier(.2,.8,.2,1);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@keyframes scan-line {
  0% { transform: translateY(-100%); opacity: 0; }
  50% { opacity: 1; }
  100% { transform: translateY(100%); opacity: 0; }
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .4; transform: scale(.8); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}
.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.logo__image {
  height: 90px; /* Ajusta el tamaño según necesites */
  width: auto;
  display: block;
}