/* ============================================================
   Unstable Innovation — Design system
   ============================================================ */

/* ---- Fonts ----------------------------------------------- */
@font-face {
  font-family: "Unstable";
  src: url("../fonts/Unstable-Regular.woff2") format("woff2"),
       url("../fonts/Unstable-Regular.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Roboto";
  src: url("../fonts/Roboto-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Roboto";
  src: url("../fonts/Roboto-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Roboto";
  src: url("../fonts/Roboto-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---- Design tokens --------------------------------------- */
:root {
  --color-bg: #ffffff;
  --color-ink: #111111;
  --color-ink-soft: #4a4a4a;
  --color-ink-muted: #767676;
  --color-line: #e5e5e5;
  --color-line-soft: #f1f1f1;
  --color-card: #f6f6f6;
  --color-card-dark: #ededed;

  --color-accent: #ffb900;          /* primary CTA yellow */
  --color-accent-hover: #ffc933;
  --color-accent-soft: rgba(255, 185, 0, 0.18);

  --color-magenta: #ff2c8a;         /* secondary accent (from videos / hero) */
  --color-purple: #4a1e6f;
  --color-purple-deep: #1e0a36;
  --color-night: #0a0a0a;

  --shadow-card: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 2px 4px rgba(0,0,0,0.06), 0 16px 36px rgba(0,0,0,0.10);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --container: 1200px;
  --container-narrow: 880px;
  --container-wide: 1400px;

  --pad-page: clamp(20px, 5vw, 48px);
  --gap-section: clamp(64px, 10vw, 120px);

  --font-display: "Unstable", "Bungee Inline", "Anton", "Bebas Neue", system-ui, sans-serif;
  --font-body: "Roboto", system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;

  --type-h1: clamp(48px, 8vw, 96px);
  --type-h2: clamp(36px, 5.5vw, 64px);
  --type-h3: clamp(28px, 3.5vw, 40px);
  --type-h4: clamp(22px, 2.5vw, 28px);
  --type-eyebrow: 13px;
  --type-body: 17px;
  --type-body-lg: 19px;
  --type-small: 14px;

  --t: 200ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ---- Reset / base ---------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--type-body);
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--color-ink); text-decoration: none; }
a:hover { color: var(--color-accent); }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.2em; margin: 0 0 1em; }
li { margin: 0.3em 0; }
button { font: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: 0.005em;
  margin: 0 0 0.5em;
  text-transform: uppercase;
}
h1 { font-size: var(--type-h1); }
h2 { font-size: var(--type-h2); }
h3 { font-size: var(--type-h3); }
h4 { font-size: var(--type-h4); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--type-eyebrow);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-bottom: 16px;
}

/* ---- Layout helpers -------------------------------------- */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad-page);
}
.container-narrow { max-width: var(--container-narrow); }
.container-wide   { max-width: var(--container-wide); }

.section { padding-block: var(--gap-section); }
.section-tight { padding-block: clamp(40px, 6vw, 80px); }
.section-dark {
  background: var(--color-night);
  color: #ffffff;
}
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }
.section-dark .eyebrow { color: #b9b9b9; }
.section-dark a { color: #fff; }
.section-dark a:hover { color: var(--color-accent); }
.section-card-bg { background: var(--color-card); }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.stack > * + * { margin-top: 24px; }
.stack-sm > * + * { margin-top: 12px; }
.stack-lg > * + * { margin-top: 40px; }

/* ---- Buttons --------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 2px solid transparent;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-ink);
  transition: transform var(--t), background var(--t), box-shadow var(--t);
  white-space: nowrap;
}
.btn:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
  color: var(--color-ink);
}
.btn-lg { padding: 18px 36px; font-size: 18px; }
.btn-secondary {
  background: transparent;
  border-color: var(--color-ink);
  color: var(--color-ink);
}
.btn-secondary:hover {
  background: var(--color-ink);
  color: #fff;
}
.btn-on-dark {
  background: var(--color-accent);
  color: var(--color-ink);
}
.btn-ghost-on-dark {
  background: transparent;
  border-color: #fff;
  color: #fff;
}
.btn-ghost-on-dark:hover {
  background: #fff;
  color: var(--color-ink);
}

/* ---- Header / nav ---------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(150%) blur(10px);
  -webkit-backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 14px;
  gap: 24px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 18px;
  text-transform: uppercase;
}
.site-logo img { width: 38px; height: 38px; }
.site-logo small {
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  text-transform: none;
  font-weight: 500;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.site-nav a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--color-ink);
  position: relative;
  padding-block: 6px;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t);
}
.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.site-nav a[aria-current="page"] { color: var(--color-ink); }
.lang-switch {
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  padding: 4px 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
}
.lang-switch:hover { border-color: var(--color-ink); }
.menu-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 8px;
}
.menu-toggle svg { width: 28px; height: 28px; }
@media (max-width: 820px) {
  .site-nav { display: none; }
  .menu-toggle { display: block; }
  .site-nav.is-open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: #fff;
    padding: 16px var(--pad-page) 24px;
    border-bottom: 1px solid var(--color-line);
  }
  .site-nav.is-open a {
    padding-block: 12px;
    width: 100%;
    border-bottom: 1px solid var(--color-line-soft);
  }
}

/* ---- Footer ---------------------------------------------- */
.site-footer {
  background: var(--color-night);
  color: #cfcfcf;
  padding-block: 64px 40px;
  font-size: 15px;
}
.site-footer a { color: #fff; }
.site-footer a:hover { color: var(--color-accent); }
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (max-width: 800px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .site-footer__grid { grid-template-columns: 1fr; } }
.site-footer h5 {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.04em;
  color: #fff;
  text-transform: uppercase;
  margin: 0 0 16px;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 6px 0; }
.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: #8a8a8a;
}

/* ---- Hero ------------------------------------------------ */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--color-night);
  color: #fff;
  min-height: clamp(560px, 80vh, 820px);
  display: grid;
  align-items: center;
}
.hero__media {
  position: absolute; inset: 0;
  z-index: -1;
}
.hero__media video,
.hero__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.42;
}
.hero__overlay {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(74, 30, 111, 0.45) 0%, rgba(10, 10, 10, 0.85) 70%);
  z-index: -1;
}
.hero__inner {
  max-width: 1100px;
  margin-inline: auto;
  padding: 80px var(--pad-page);
  text-align: center;
}
.hero h1 {
  color: #fff;
  font-size: clamp(56px, 9vw, 120px);
  line-height: 0.96;
  margin-bottom: 24px;
}
.hero h1 .accent { color: var(--color-accent); }
.hero__sub {
  font-size: clamp(18px, 2vw, 22px);
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: 36px;
  color: rgba(255, 255, 255, 0.92);
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

/* ---- Hero secondary (smaller pages) ---------------------- */
.page-hero {
  padding: clamp(80px, 12vw, 140px) 0 clamp(48px, 7vw, 80px);
  text-align: center;
}
.page-hero h1 { font-size: clamp(48px, 7vw, 88px); margin-bottom: 12px; }
.page-hero .eyebrow { display: inline-block; }
.page-hero p { max-width: 640px; margin-inline: auto; color: var(--color-ink-soft); font-size: var(--type-body-lg); }
.page-hero--dark { background: var(--color-night); color: #fff; }
.page-hero--dark p { color: rgba(255, 255, 255, 0.85); }
.page-hero--dark h1 { color: #fff; }

/* ---- Card / tile ----------------------------------------- */
.card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform var(--t), box-shadow var(--t);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.card--soft { background: var(--color-card); box-shadow: none; }
.card--bordered { box-shadow: none; border: 1px solid var(--color-line); }
.card h3 { font-size: var(--type-h4); margin-bottom: 8px; }
.card-icon { width: 56px; height: 56px; }

/* Tile (insights hub cards with icon at top) */
.tile {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px 28px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform var(--t), box-shadow var(--t);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.tile:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.tile img { width: 80px; height: 80px; margin-bottom: 4px; }
.tile h3 { font-size: 22px; margin: 0; }
.tile p { color: var(--color-ink-soft); margin: 0; font-size: 15px; }

/* ---- Reviews --------------------------------------------- */
.reviews-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
@media (max-width: 900px) { .reviews-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .reviews-grid { grid-template-columns: 1fr; } }
.review {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  font-size: 15px;
  line-height: 1.55;
}
.review__stars { color: var(--color-accent); letter-spacing: 2px; margin-bottom: 8px; font-size: 16px; }
.review__title { font-weight: 700; margin-bottom: 8px; font-size: 16px; }
.review__author { margin-top: 12px; font-weight: 700; }
.review__meta { color: var(--color-ink-muted); font-size: 13px; }

/* ---- Book card / list ------------------------------------ */
.book-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 20px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--color-line);
  transition: transform var(--t), box-shadow var(--t);
}
.book-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.book-card__cover {
  flex: 0 0 100px;
  width: 100px;
  aspect-ratio: 2/3;
  object-fit: contain;
  background: var(--color-line-soft);
  border-radius: 4px;
}
.book-card__body { flex: 1; min-width: 0; }
.book-card__title { font-size: 17px; font-weight: 700; margin: 0 0 4px; }
.book-card__author { font-size: 14px; color: var(--color-ink-muted); margin-bottom: 8px; }
.book-card__desc { font-size: 15px; color: var(--color-ink-soft); margin: 0 0 8px; }
.book-card__tag {
  display: inline-block;
  background: var(--color-accent-soft);
  color: var(--color-ink);
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
}

/* ---- Featured-on logos ----------------------------------- */
.featured-on {
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  align-items: center;
  justify-content: center;
}
.featured-on img {
  height: 28px;
  width: auto;
  opacity: 0.85;
  filter: brightness(0) invert(1);
  transition: opacity var(--t);
}
.featured-on img:hover { opacity: 1; }

/* ---- Form ------------------------------------------------ */
.form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
  display: grid;
  gap: 20px;
  max-width: 580px;
  margin-inline: auto;
}
.form label {
  display: block;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
  margin-bottom: 6px;
}
.form input[type="text"],
.form input[type="email"] {
  width: 100%;
  padding: 14px 16px;
  font: inherit;
  border: 1.5px solid var(--color-line);
  border-radius: var(--radius-sm);
  transition: border-color var(--t);
}
.form input:focus { outline: none; border-color: var(--color-ink); }
.form fieldset {
  border: 0;
  padding: 0;
  margin: 0;
}
.form fieldset legend {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}
.form .checkbox-group { display: flex; flex-wrap: wrap; gap: 12px; }
.form .checkbox-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1.5px solid var(--color-line);
  border-radius: var(--radius-pill);
  font-weight: 500;
  cursor: pointer;
  font-size: 14px;
  transition: border-color var(--t), background var(--t);
  margin: 0;
}
.form .checkbox-group label:has(input:checked) {
  border-color: var(--color-ink);
  background: var(--color-card);
}
.form .checkbox-group input[type="checkbox"] { accent-color: var(--color-ink); }
.form .consent { display: flex; align-items: flex-start; gap: 10px; font-weight: 500; font-size: 14px; }
.form .consent input { margin-top: 4px; flex: 0 0 auto; }
.form .honeypot { position: absolute; left: -9999px; }
.form-message {
  padding: 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  display: none;
}
.form-message.is-success { display: block; background: #e8f6e8; color: #1f6b1f; }
.form-message.is-error   { display: block; background: #fae9e9; color: #8b1f1f; }

/* ---- Image-text alternating section ---------------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}
.split--reverse { direction: rtl; }
.split--reverse > * { direction: ltr; }
@media (max-width: 800px) { .split { grid-template-columns: 1fr; } }

/* ---- Geyser callout / dark callout ----------------------- */
.dark-cta {
  background: var(--color-night);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(40px, 6vw, 64px);
  text-align: center;
}
.dark-cta h2 { color: #fff; }

/* ---- Utility --------------------------------------------- */
.text-center { text-align: center; }
.text-soft { color: var(--color-ink-soft); }
.text-muted { color: var(--color-ink-muted); }
.lead { font-size: var(--type-body-lg); color: var(--color-ink-soft); }
.maxw-prose { max-width: 65ch; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.divider {
  border: 0;
  height: 1px;
  background: var(--color-line);
  margin-block: 32px;
}
.badge-yellow {
  display: inline-block;
  background: var(--color-accent);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---- YouTube embed --------------------------------------- */
.yt-embed {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--color-night);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.yt-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.yt-vertical { aspect-ratio: 9/16; max-width: 380px; margin-inline: auto; }

/* ---- Chapter section (for takeaways & applications) ------ */
.chapter {
  padding-block: 36px;
  border-bottom: 1px solid var(--color-line);
}
.chapter:last-child { border-bottom: 0; }
.chapter__num {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
}
.chapter h3 { font-size: var(--type-h3); margin-bottom: 16px; }
.chapter ul { margin-left: 0; padding-left: 20px; }
.chapter li { margin: 8px 0; color: var(--color-ink-soft); }

/* ---- Aggregate-rating top of page ------------------------ */
.aggregate-rating {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--color-card);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
}
.aggregate-rating .stars { color: var(--color-accent); font-size: 18px; letter-spacing: 2px; }

/* ---- Spacing utilities ----------------------------------- */
.mt-sm { margin-top: 16px; }
.mt-md { margin-top: 32px; }
.mt-lg { margin-top: 56px; }
.mb-sm { margin-bottom: 16px; }
.mb-md { margin-bottom: 32px; }
.mb-lg { margin-bottom: 56px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   Iteration 2 — fixes per Nelson's review
   ============================================================ */

/* Logo: just the SVG, no text. Hover turns yellow. */
.site-logo {
  display: inline-flex;
  align-items: center;
  width: auto;
  height: 48px;
  text-decoration: none;
}
.site-logo img {
  width: auto;
  height: 100%;
  max-height: 48px;
  transition: filter var(--t), transform var(--t);
}
.site-logo:hover img {
  /* Convert black SVG to yellow #ffb900 */
  filter: invert(70%) sepia(100%) saturate(2000%) hue-rotate(2deg) brightness(102%) contrast(101%);
  transform: scale(1.03);
}
.site-logo span { display: none; }                       /* no duplicate text */
.site-footer .site-logo { height: 56px; }
.site-footer .site-logo img { filter: brightness(0) invert(1); }
.site-footer .site-logo:hover img {
  filter: invert(70%) sepia(100%) saturate(2000%) hue-rotate(2deg) brightness(102%) contrast(101%);
}

/* Bigger 3D book cover on the home "Choose your destiny" split */
.hero-book-cover {
  margin-inline: auto;
  max-height: 1400px;
  width: 100%;
  max-width: 720px;
}

/* YouTube vertical embed: use thumbnail with big play button overlay */
.yt-thumb {
  position: relative;
  cursor: pointer;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-night);
}
.yt-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.95;
  transition: opacity var(--t), transform var(--t);
}
.yt-thumb:hover img { opacity: 1; transform: scale(1.02); }
.yt-thumb::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 72px; height: 72px;
  margin: -36px 0 0 -36px;
  background:
    radial-gradient(circle, rgba(0,0,0,0.78) 0 36px, transparent 37px) center/100% no-repeat;
  border-radius: 50%;
}
.yt-thumb::before {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  margin: -12px 0 0 -7px;
  width: 0; height: 0;
  border-left: 22px solid #fff;
  border-top: 14px solid transparent;
  border-bottom: 14px solid transparent;
  z-index: 2;
}

/* Spanish edition with overlapping photos */
.es-stack {
  position: relative;
  max-width: 520px;
  margin-inline: auto;
  aspect-ratio: 3/4;
}
.es-stack__main {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  z-index: 2;
}
.es-stack__top-left {
  position: absolute;
  top: -8%; left: -14%;
  width: 38%;
  z-index: 1;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  transform: rotate(-2deg);
}
.es-stack__bottom-right {
  position: absolute;
  bottom: -6%; right: -8%;
  width: 46%;
  z-index: 3;
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.22);
  transform: rotate(3deg);
}
@media (max-width: 700px) {
  .es-stack__top-left { width: 30%; left: -8%; }
  .es-stack__bottom-right { width: 40%; right: -4%; }
}

/* Drawn step numbers (images instead of styled circle) */
.step__number-img {
  display: block;
  margin: 0 auto 8px;
  width: 110px;
  height: 110px;
  object-fit: contain;
}

/* "Fill this short form" - display-font centered title */
.step h2.step-title {
  font-family: var(--font-display);
  font-weight: 400;
  text-transform: uppercase;
  font-size: clamp(32px, 5vw, 56px);
  letter-spacing: 0.02em;
}

/* Visually distinguish links inside .prose-links (used on thank-you next steps) */
.prose-links a {
  color: var(--color-ink);
  background-image: linear-gradient(transparent 60%, var(--color-accent) 60%);
  background-size: 100% 100%;
  padding: 0 2px;
  transition: background-size var(--t), color var(--t);
  font-weight: 700;
}
.prose-links a:hover {
  color: #000;
  background-image: linear-gradient(var(--color-accent), var(--color-accent));
}

/* Big centered quote (for the /author mantra) */
.big-quote {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(40px, 7vw, 88px);
  line-height: 1.05;
  text-align: center;
  margin: clamp(48px, 8vw, 80px) auto;
  max-width: 14ch;
  position: relative;
  color: var(--color-ink);
}
.big-quote::before,
.big-quote::after {
  content: "";
  display: block;
  width: 64px;
  height: 4px;
  background: var(--color-accent);
  margin: 24px auto;
}
.big-quote em {
  font-style: normal;
  color: var(--color-accent);
}
.section-dark .big-quote { color: #fff; }


/* ============================================================
   Iteration 3 — Nelson's feedback round 2
   ============================================================ */

/* Footer logo should turn yellow on hover (same as top) */
.site-footer .site-logo:hover img {
  filter: invert(74%) sepia(70%) saturate(2200%) hue-rotate(2deg) brightness(106%) contrast(102%) !important;
}

/* Tighter spacing around the big mantra quote on /author */
.big-quote {
  margin: clamp(24px, 4vw, 40px) auto !important;
}
.big-quote::before, .big-quote::after {
  margin: 16px auto !important;
}
/* Comillas decoration around the mantra */
.mantra-wrap {
  position: relative;
  padding: clamp(40px, 6vw, 64px) clamp(24px, 6vw, 80px);
  display: flex;
  justify-content: center;
  align-items: center;
}
.mantra-wrap img.comillas {
  width: clamp(64px, 10vw, 120px);
  height: auto;
  opacity: 0.92;
  flex: 0 0 auto;
}
.mantra-wrap img.comillas-left { transform: scaleX(1); margin-right: clamp(12px, 2vw, 24px); }
.mantra-wrap img.comillas-right { transform: scaleX(-1); margin-left: clamp(12px, 2vw, 24px); }
.mantra-wrap .big-quote { margin: 0 !important; }
.mantra-wrap .big-quote::before, .mantra-wrap .big-quote::after { display: none; }
@media (max-width: 600px) {
  .mantra-wrap img.comillas { width: 48px; }
}

/* Honeypot anywhere on the site (not just inside .form) */
.honeypot {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* Hyperlink with yellow underline highlight (use anywhere) */
.link-yellow {
  color: var(--color-ink);
  background-image: linear-gradient(transparent 60%, var(--color-accent) 60%);
  background-size: 100% 100%;
  padding: 0 2px;
  font-weight: 700;
  transition: background-size var(--t), color var(--t);
}
.link-yellow:hover {
  color: #000;
  background-image: linear-gradient(var(--color-accent), var(--color-accent));
}

/* Spanish section: 3 overlays + main book */
.es-stack__top-right {
  position: absolute;
  top: -8%; right: -10%;
  width: 38%;
  z-index: 3;
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.22);
  transform: rotate(3deg);
}
.es-stack__bottom-left {
  position: absolute;
  bottom: -10%; left: -10%;
  width: 42%;
  z-index: 3;
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.22);
  transform: rotate(-3deg);
}
@media (max-width: 700px) {
  .es-stack__top-right { width: 32%; right: -4%; }
  .es-stack__bottom-left { width: 36%; left: -4%; }
}

/* Featured-on logo grid: 4 + 3 with proper spacing and links */
.featured-on-wrap {
  margin-top: clamp(48px, 6vw, 72px);
}
.featured-on-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 36px 48px;
  align-items: center;
  justify-items: center;
  max-width: 920px;
  margin-inline: auto;
}
.featured-on-grid--bottom {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 720px;
  margin-top: 24px;
}
.featured-on-grid a img {
  height: 32px;
  width: auto;
  opacity: 0.85;
  filter: brightness(0) invert(1);
  transition: opacity var(--t), transform var(--t);
}
.featured-on-grid a:hover img { opacity: 1; transform: scale(1.05); }
@media (max-width: 700px) {
  .featured-on-grid, .featured-on-grid--bottom {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 24px;
    max-width: 380px;
  }
}

/* Hero image for insights pages (megatrends / takeaways) */
.insights-hero-image {
  width: 100%;
  max-width: 880px;
  margin: 0 auto clamp(32px, 5vw, 56px);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  display: block;
}

/* Fans video block (reused below reviews) */
.fans-video {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-night);
  max-width: 1200px;
  margin: 0 auto;
}
.fans-video video {
  width: 100%;
  display: block;
}
.fans-video .fans-video__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10,10,10,0.65) 100%);
  pointer-events: none;
}

/* Make sure yt-thumb is clickable everywhere */
.yt-thumb, .yt-embed { cursor: pointer; }
.yt-thumb * { pointer-events: none; }  /* Ensure click reaches the thumb wrapper */
.yt-thumb::after, .yt-thumb::before { pointer-events: none; }


/* ============================================================
   Iteration 4 — videos as links, bigger book, smaller numbers
   ============================================================ */

/* Step numbers smaller (50% smaller display) */
.step__number-img {
  width: 80px !important;
  height: 80px !important;
  background: transparent;
}

/* Make the home-page 3D book MUCH bigger */
.hero-book-cover {
  max-height: 1800px !important;
  max-width: 880px !important;
  width: 100% !important;
}

/* YouTube link wrapper (replaces yt-thumb click handler) */
a.yt-link {
  position: relative;
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-night);
  text-decoration: none;
}
a.yt-link img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.95;
  transition: opacity var(--t), transform var(--t);
}
a.yt-link:hover img { opacity: 1; transform: scale(1.02); }
a.yt-link::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 84px; height: 84px;
  margin: -42px 0 0 -42px;
  background: rgba(0,0,0,0.78);
  border-radius: 50%;
  transition: background var(--t);
}
a.yt-link::before {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  margin: -14px 0 0 -8px;
  width: 0; height: 0;
  border-left: 26px solid #fff;
  border-top: 16px solid transparent;
  border-bottom: 16px solid transparent;
  z-index: 2;
}
a.yt-link:hover::after { background: var(--color-accent); }
a.yt-link.yt-vertical { aspect-ratio: 9/16; max-width: 380px; margin-inline: auto; }
a.yt-link.yt-horizontal { aspect-ratio: 16/9; }


/* ============================================================
   Iteration 5 — inline videos (nelsoninno.com pattern), centered logos
   ============================================================ */

/* Video frame: container with aspect ratio */
.video-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: #0e0d0b;
  box-shadow: 0 12px 32px rgba(0,0,0,0.10);
}
.video-frame.aspect-16-9 { aspect-ratio: 16/9; }
.video-frame.aspect-9-16 { aspect-ratio: 9/16; max-width: 380px; margin-inline: auto; }
.video-frame iframe { width: 100%; height: 100%; border: 0; position: absolute; inset: 0; }

.video-placeholder {
  position: absolute; inset: 0;
  cursor: pointer;
  background: linear-gradient(135deg, #1f1c18 0%, #0e0d0b 100%);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.video-placeholder .video-thumb {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.7;
  transition: opacity var(--t), transform var(--t);
}
.video-placeholder:hover .video-thumb { opacity: 0.55; transform: scale(1.02); }
.video-placeholder::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(252, 211, 7, 0.08), transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(0, 0, 0, 0.4), transparent 60%);
  z-index: 1;
}
.video-play {
  position: relative; z-index: 3;
  width: 88px; height: 88px; border-radius: 50%;
  background: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 12px 28px rgba(0,0,0,0.35);
  transition: transform var(--t), background var(--t);
}
.video-placeholder:hover .video-play { transform: scale(1.08); }
.video-play::after {
  content: ''; width: 0; height: 0;
  border-left: 26px solid #000;
  border-top: 16px solid transparent;
  border-bottom: 16px solid transparent;
  margin-left: 6px;
}

/* Featured-on: 3+3 properly centered */
.featured-on-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  max-width: 720px !important;
}
.featured-on-grid--bottom {
  max-width: 720px !important;
}
.featured-on-grid a { display: flex; align-items: center; justify-content: center; }

/* Reviews badge: small, inline above the heading */
.reviews-badge {
  display: block;
  max-width: 180px;
  height: auto;
  margin: 0 auto 8px;
}

/* Language switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  padding: 6px 14px;
  border: 1.5px solid var(--color-line);
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: all var(--t);
  white-space: nowrap;
}
.lang-switch:hover {
  border-color: var(--color-ink);
  color: var(--color-ink);
  background: var(--color-card);
}
.lang-switch.is-active { color: var(--color-ink); border-color: var(--color-ink); font-weight: 700; }


/* ============================================================
   Iteration 6 — yellow flag-toggle language switcher
   ============================================================ */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  background: #f3f3f3;
  border-radius: var(--radius-pill);
  padding: 4px;
  gap: 4px;
  line-height: 1;
  font-family: var(--font-body);
}
.lang-toggle a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  text-decoration: none;
  transition: background var(--t), color var(--t), transform var(--t);
}
.lang-toggle a .flag {
  width: 18px; height: 18px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  display: inline-block;
  flex: 0 0 auto;
  border: 1px solid rgba(0,0,0,0.08);
}
.lang-toggle a .flag-en { background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 60 60'><rect width='60' height='60' fill='%23b22234'/><g fill='%23ffffff'><rect y='4.5' width='60' height='4.5'/><rect y='13.5' width='60' height='4.5'/><rect y='22.5' width='60' height='4.5'/><rect y='31.5' width='60' height='4.5'/><rect y='40.5' width='60' height='4.5'/><rect y='49.5' width='60' height='4.5'/></g><rect width='28' height='27' fill='%233c3b6e'/><g fill='%23ffffff'><circle cx='4' cy='4' r='1'/><circle cx='10' cy='4' r='1'/><circle cx='16' cy='4' r='1'/><circle cx='22' cy='4' r='1'/><circle cx='4' cy='10' r='1'/><circle cx='10' cy='10' r='1'/><circle cx='16' cy='10' r='1'/><circle cx='22' cy='10' r='1'/><circle cx='4' cy='16' r='1'/><circle cx='10' cy='16' r='1'/><circle cx='16' cy='16' r='1'/><circle cx='22' cy='16' r='1'/><circle cx='4' cy='22' r='1'/><circle cx='10' cy='22' r='1'/><circle cx='16' cy='22' r='1'/><circle cx='22' cy='22' r='1'/></g></svg>"); }
.lang-toggle a .flag-es { background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 6 4'><rect width='6' height='4' fill='%23c60b1e'/><rect y='1' width='6' height='2' fill='%23ffc400'/></svg>"); }
.lang-toggle a.is-active {
  background: var(--color-accent);
  color: var(--color-ink);
}
.lang-toggle a:not(.is-active):hover {
  color: var(--color-ink);
  background: rgba(0,0,0,0.05);
}
@media (max-width: 820px) {
  .lang-toggle { margin-left: auto; margin-right: 8px; }
}


/* ============================================================
   Iteration 8 — Unstable display font in the nav (both EN and ES)
   ============================================================ */
.site-nav a {
  font-family: var(--font-display) !important;
  font-weight: 400 !important;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 16px;
}
@media (max-width: 1024px) {
  .site-nav a { font-size: 14px; }
}
/* Spanish-language pages: fallback for accented words */
html[lang="es"] .site-nav a {
  font-family: "Unstable", "Anton", "Bebas Neue", sans-serif !important;
}