/* EduQuestory public landing — EduQuestory_Droid_Landing_Page_Build_Brief_2026-10-09_REV2
   Brand colors per Logo System Guide §6:
     Edu Blue   #0B4DB7
     Edu Orange #FF7A00
   Two solid colors only — no gradients. */

:root {
  --color-bg: #ffffff;
  --color-bg-soft: #f5f7fc;
  --color-bg-tint: #eaf0fb;
  --color-surface: #ffffff;
  --color-border: #e3e8f4;
  --color-text: #0e1a3d;
  --color-text-muted: #4a537a;
  --color-text-subtle: #6b7591;
  --color-primary: #0b4db7;       /* Edu Blue */
  --color-primary-hover: #083c8c;
  --color-primary-soft: #e6eefb;
  --color-accent: #ff7a00;        /* Edu Orange */
  --color-accent-soft: #ffe9d2;
  --color-success: #19a974;
  --shadow-sm: 0 2px 8px rgba(14, 26, 61, 0.06);
  --shadow-md: 0 12px 32px rgba(14, 26, 61, 0.1);
  --shadow-lg: 0 24px 60px rgba(14, 26, 61, 0.14);
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --container-max: 1180px;
  --header-height: 76px;
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --transition-base: 180ms ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0a1130;
    --color-bg-soft: #0e163d;
    --color-bg-tint: #131c4a;
    --color-surface: #131c4a;
    --color-border: #1d2960;
    --color-text: #eef1ff;
    --color-text-muted: #b6bee0;
    --color-text-subtle: #8995c8;
    --color-primary: #5b85ff;
    --color-primary-hover: #7a9eff;
    --color-primary-soft: #1a2660;
    --color-accent: #ffa24a;
    --color-accent-soft: #4a2a12;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover,
a:focus-visible {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.narrow {
  max-width: 820px;
}

.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -40px;
  background: var(--color-primary);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-xs);
  z-index: 1000;
  transition: top var(--transition-base);
}

.skip-link:focus {
  top: 1rem;
  color: #fff;
  text-decoration: none;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-text);
  font-weight: 700;
}

.brand:hover,
.brand:focus-visible {
  color: var(--color-text);
  text-decoration: none;
}

.brand-mark {
  display: inline-block;
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-footer .brand-mark {
  width: 36px;
  height: 36px;
}

.brand-wordmark {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-name {
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  font-weight: 800;
}

.brand-tag {
  font-size: 0.7rem;
  color: var(--color-text-subtle);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--color-text);
  font-weight: 500;
  padding: 0.35rem 0.1rem;
  position: relative;
}

.site-nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -4px;
  height: 2px;
  background: var(--color-primary);
  transition: right var(--transition-base);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  right: 0;
}

.header-cta {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  width: 42px;
  height: 42px;
  padding: 10px 8px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}

.mobile-nav {
  border-top: 1px solid var(--color-border);
  padding: 1rem 1.5rem 1.25rem;
}

.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.mobile-nav a {
  display: block;
  padding: 0.65rem 0.25rem;
  color: var(--color-text);
  font-weight: 500;
  border-radius: var(--radius-xs);
}

.mobile-nav a:hover {
  background: var(--color-bg-soft);
  text-decoration: none;
}

.mobile-cta {
  margin-top: 0.75rem;
  display: inline-block;
  padding: 0.75rem 1.25rem;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.85rem 1.4rem;
  font-size: 0.98rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition-base), color var(--transition-base),
    border-color var(--transition-base), transform var(--transition-base);
  text-align: center;
  white-space: nowrap;
}

.btn:hover,
.btn:focus-visible {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 8px 20px rgba(11, 77, 183, 0.25);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #ffffff;
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
}

/* Hero */

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(3.5rem, 7vw, 6rem);
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(
      80% 60% at 90% 10%,
      var(--color-accent-soft) 0%,
      transparent 60%
    ),
    radial-gradient(60% 50% at 10% 0%, var(--color-primary-soft) 0%, transparent 55%),
    linear-gradient(180deg, var(--color-bg-soft) 0%, var(--color-bg) 100%);
  z-index: -1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}

.hero-copy {
  max-width: 36rem;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-pill);
  margin: 0 0 1.2rem;
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 0 0 1.2rem;
}

.hero-title .accent {
  color: var(--color-accent);
  display: inline-block;
}

.hero-lede {
  font-size: 1.12rem;
  color: var(--color-text-muted);
  margin: 0 0 1.75rem;
  max-width: 32rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

.hero-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  color: var(--color-text-subtle);
  font-size: 0.95rem;
}

.hero-bullets li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-bullets li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.hero-figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--color-bg-tint);
  border: 1px solid var(--color-border);
}

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* Sections */

.section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
  border-top: 1px solid var(--color-border);
}

.section:first-of-type {
  border-top: none;
}

.section-head {
  text-align: center;
  margin: 0 auto clamp(1.75rem, 4vw, 2.75rem);
  max-width: 760px;
}

.section-head h2 {
  margin: 0.4rem 0 0.8rem;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  letter-spacing: -0.01em;
}

.section-lede {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin: 0;
}

h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
  font-weight: 800;
}

h3 {
  font-size: 1.1rem;
  margin: 0 0 0.45rem;
  font-weight: 700;
  letter-spacing: -0.005em;
}

p {
  margin: 0 0 1rem;
}

.lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
}

/* About */

.section-about .about-values {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.section-about .about-values li {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.55rem 1.05rem;
  border-radius: var(--radius-pill);
}

/* Cards */

.cards-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.cards-6 {
  /* legacy utility class; no longer used in current markup. Kept for backward compatibility. */
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base),
    border-color var(--transition-base);
  position: relative;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--color-primary) 35%, var(--color-border));
}

.card-icon {
  font-size: 1.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-accent-soft);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.05rem;
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.96rem;
  margin: 0;
}

/* Characters (Meet the EduQuestory Crew) */

.crew-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.crew-card {
  text-align: center;
  padding: 1.75rem 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.crew-avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  margin: 0 auto 1.1rem;
  background: var(--color-primary-soft);
  border: 4px solid var(--color-surface);
  box-shadow:
    0 0 0 1px var(--color-border),
    0 12px 28px rgba(14, 26, 61, 0.12);
  display: block;
  aspect-ratio: 1 / 1;
}

.crew-card h3 {
  margin: 0 0 0.2rem;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.005em;
}

.crew-role {
  color: var(--color-text-muted);
  font-size: 0.96rem;
  margin: 0 0 0.75rem;
  font-weight: 500;
}

.crew-trait {
  display: inline-block;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 0.32rem 0.75rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

/* Founder */

.section-founder {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-soft) 100%);
}

.founder-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.founder-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  box-shadow: var(--shadow-md);
  margin: 0 auto;
  display: block;
  object-fit: cover;
  object-position: center center;
  aspect-ratio: 1 / 1;
  border: 4px solid var(--color-surface);
}

.founder-copy {
  max-width: 38rem;
}

.founder-links {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.founder-links a {
  display: inline-block;
  padding: 0.55rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  font-weight: 500;
  background: var(--color-surface);
}

.founder-links a:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

/* Contact */

.section-contact .contact-actions {
  margin-top: 2rem;
}

/* Footer */

.site-footer {
  background: var(--color-text);
  color: #d6dcf0;
  padding: 3rem 0 1.5rem;
  margin-top: 0;
}

.site-footer .brand {
  color: #ffffff;
}

.site-footer .brand:hover {
  color: #ffffff;
}

.footer-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 2rem;
  align-items: center;
}

.footer-copy {
  margin: 0;
  font-size: 0.92rem;
  color: #aab3d0;
  text-align: center;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-end;
}

.footer-links a {
  color: #d6dcf0;
  font-size: 0.92rem;
}

.footer-links a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-fineprint {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: #8a93b7;
  text-align: center;
  max-width: 720px;
}

/* Reveal on scroll */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 600ms ease, transform 600ms ease;
  will-change: opacity, transform;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .card,
  .btn {
    transition: none;
  }
}

/* Responsive */

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-figure {
    order: -1;
  }

  .cards-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .cards-6 {
    grid-template-columns: repeat(3, 1fr);
  }

  .crew-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .crew-avatar {
    width: 144px;
    height: 144px;
  }

  .founder-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .founder-photo {
    width: 160px;
    height: 160px;
  }

  .founder-links {
    justify-content: center;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .site-nav,
  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .mobile-nav[hidden] {
    display: none;
  }

  .mobile-nav {
    display: block;
  }

  .cards-4 {
    grid-template-columns: 1fr;
  }

  .cards-6 {
    grid-template-columns: repeat(2, 1fr);
  }

  .crew-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .crew-avatar {
    width: 128px;
    height: 128px;
  }

  .footer-row {
    grid-template-columns: 1fr;
    gap: 1rem;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }
}