/* Design DNA: Mosaic collage hero of kids/robots/circuits tiles; electric blue + sunshine yellow; playful STEM education mood */
@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@600;700;800&family=Nunito+Sans:wght@400;600;700&display=swap');

:root {
  --sj-blue: #1E6FFF;
  --sj-yellow: #FFD60A;
  --sj-navy: #0B1F3A;
  --sj-white: #FFFFFF;
  --sj-light: #F4F8FF;
  --sj-gray: #6B7A90;
  --sj-radius: 14px;
  --sj-shadow: 0 8px 32px rgba(11, 31, 58, 0.12);
  --sj-font-head: 'Exo 2', sans-serif;
  --sj-font-body: 'Nunito Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sj-font-body);
  color: var(--sj-navy);
  background: var(--sj-white);
  line-height: 1.6;
  font-size: 16px;
}

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

a { color: var(--sj-blue); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--sj-navy); }

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

/* ── Header ── */
.sj-header {
  background: linear-gradient(135deg, var(--sj-light) 0%, #E8F2FF 50%, #FFF9DB 100%);
  border-bottom: 3px solid var(--sj-yellow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.sj-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1180px;
  margin: 0 auto;
}

.sj-logo {
  font-family: var(--sj-font-head);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--sj-navy);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sj-logo span {
  background: var(--sj-blue);
  color: var(--sj-white);
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.sj-nav { display: flex; gap: 28px; align-items: center; }

.sj-nav a {
  font-weight: 600;
  color: var(--sj-navy);
  font-size: 0.95rem;
  position: relative;
}

.sj-nav a:hover, .sj-nav a.sj-active { color: var(--sj-blue); }

.sj-nav a.sj-active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--sj-yellow);
  border-radius: 2px;
}

.sj-burger {
  display: none;
  background: var(--sj-blue);
  color: var(--sj-white);
  border: none;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 1.3rem;
  cursor: pointer;
  line-height: 1;
}

.sj-mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--sj-navy);
  padding: 16px 24px;
  gap: 12px;
}

.sj-mobile-nav.sj-open { display: flex; }

.sj-mobile-nav a {
  color: var(--sj-white);
  font-weight: 600;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

/* ── Hero Mosaic ── */
.sj-hero {
  background: var(--sj-navy);
  padding: 48px 24px 56px;
  position: relative;
  overflow: hidden;
}

.sj-hero-content {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.sj-hero-text h1 {
  font-family: var(--sj-font-head);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--sj-white);
  line-height: 1.15;
  margin-bottom: 16px;
}

.sj-hero-text h1 em {
  font-style: normal;
  color: var(--sj-yellow);
}

.sj-hero-text p {
  color: rgba(255,255,255,0.85);
  font-size: 1.1rem;
  margin-bottom: 28px;
}

.sj-hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }

.sj-btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 700;
  font-family: var(--sj-font-head);
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.sj-btn:hover { transform: translateY(-2px); }

.sj-btn-primary {
  background: var(--sj-yellow);
  color: var(--sj-navy);
  box-shadow: 0 4px 16px rgba(255,214,10,0.4);
}

.sj-btn-outline {
  background: transparent;
  color: var(--sj-white);
  border: 2px solid var(--sj-white);
}

.sj-mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 8px;
  border-radius: var(--sj-radius);
  overflow: hidden;
  aspect-ratio: 1;
}

.sj-mosaic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sj-mosaic img:first-child { grid-row: span 2; }

/* ── Sections ── */
.sj-section { padding: 64px 0; }
.sj-section-alt { background: var(--sj-light); }

.sj-section-title {
  font-family: var(--sj-font-head);
  font-size: 2rem;
  font-weight: 700;
  color: var(--sj-navy);
  margin-bottom: 12px;
  text-align: center;
}

.sj-section-sub {
  text-align: center;
  color: var(--sj-gray);
  max-width: 600px;
  margin: 0 auto 40px;
}

.sj-badge {
  display: inline-block;
  background: var(--sj-yellow);
  color: var(--sj-navy);
  font-family: var(--sj-font-head);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 4px 14px;
  border-radius: 50px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ── Cards ── */
.sj-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.sj-card {
  background: var(--sj-white);
  border-radius: var(--sj-radius);
  overflow: hidden;
  box-shadow: var(--sj-shadow);
  transition: transform 0.25s;
}

.sj-card:hover { transform: translateY(-4px); }

.sj-card img { width: 100%; height: 200px; object-fit: cover; }

.sj-card-body { padding: 22px; }

.sj-card-body h3 {
  font-family: var(--sj-font-head);
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--sj-navy);
}

.sj-card-body p { color: var(--sj-gray); font-size: 0.92rem; }

.sj-card-tag {
  display: inline-block;
  background: rgba(30,111,255,0.1);
  color: var(--sj-blue);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  margin-bottom: 10px;
}

/* ── Features ── */
.sj-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.sj-feature {
  text-align: center;
  padding: 28px 16px;
  background: var(--sj-white);
  border-radius: var(--sj-radius);
  box-shadow: var(--sj-shadow);
}

.sj-feature-icon {
  width: 56px;
  height: 56px;
  background: var(--sj-blue);
  color: var(--sj-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 14px;
}

.sj-feature h3 {
  font-family: var(--sj-font-head);
  font-size: 1rem;
  margin-bottom: 6px;
}

.sj-feature p { font-size: 0.88rem; color: var(--sj-gray); }

/* ── CTA Banner ── */
.sj-cta {
  background: linear-gradient(135deg, var(--sj-blue) 0%, #1558CC 100%);
  border-radius: var(--sj-radius);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  margin: 0 auto;
  max-width: 1180px;
}

.sj-cta img { height: 100%; object-fit: cover; min-height: 260px; }

.sj-cta-text {
  padding: 40px;
  color: var(--sj-white);
}

.sj-cta-text h2 {
  font-family: var(--sj-font-head);
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.sj-cta-text p { margin-bottom: 20px; opacity: 0.9; }

/* ── Page Hero (inner pages) ── */
.sj-page-hero {
  background: linear-gradient(135deg, var(--sj-navy) 0%, #153060 100%);
  padding: 48px 24px;
  text-align: center;
}

.sj-page-hero h1 {
  font-family: var(--sj-font-head);
  font-size: 2.4rem;
  color: var(--sj-white);
  margin-bottom: 10px;
}

.sj-page-hero p { color: rgba(255,255,255,0.8); font-size: 1.05rem; }

/* ── About ── */
.sj-about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.sj-about-grid img { border-radius: var(--sj-radius); box-shadow: var(--sj-shadow); }

.sj-about-grid h2 {
  font-family: var(--sj-font-head);
  font-size: 1.6rem;
  margin-bottom: 14px;
}

.sj-about-grid p { color: var(--sj-gray); margin-bottom: 14px; }

.sj-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.sj-stat {
  text-align: center;
  padding: 20px;
  background: var(--sj-light);
  border-radius: var(--sj-radius);
}

.sj-stat strong {
  display: block;
  font-family: var(--sj-font-head);
  font-size: 2rem;
  color: var(--sj-blue);
}

.sj-stat span { font-size: 0.85rem; color: var(--sj-gray); }

/* ── Gallery ── */
.sj-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.sj-gallery-item {
  border-radius: var(--sj-radius);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
}

.sj-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.sj-gallery-item:hover img { transform: scale(1.05); }

.sj-gallery-item.sj-wide { grid-column: span 2; }

.sj-gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(11,31,58,0.85));
  color: var(--sj-white);
  padding: 24px 14px 12px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ── Contact ── */
.sj-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.sj-contact-info { display: flex; flex-direction: column; gap: 20px; }

.sj-contact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px;
  background: var(--sj-light);
  border-radius: var(--sj-radius);
}

.sj-contact-icon {
  width: 44px;
  height: 44px;
  background: var(--sj-blue);
  color: var(--sj-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.sj-contact-item h4 {
  font-family: var(--sj-font-head);
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.sj-contact-item p, .sj-contact-item a { font-size: 0.9rem; color: var(--sj-gray); }

.sj-form { display: flex; flex-direction: column; gap: 16px; }

.sj-form label {
  font-weight: 600;
  font-size: 0.88rem;
  display: block;
  margin-bottom: 4px;
}

.sj-form input, .sj-form select, .sj-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #E0E8F4;
  border-radius: 10px;
  font-family: var(--sj-font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s;
  background: var(--sj-white);
}

.sj-form input:focus, .sj-form select:focus, .sj-form textarea:focus {
  outline: none;
  border-color: var(--sj-blue);
}

.sj-form textarea { resize: vertical; min-height: 120px; }

/* ── Privacy ── */
.sj-privacy { max-width: 800px; margin: 0 auto; }

.sj-privacy h2 {
  font-family: var(--sj-font-head);
  font-size: 1.3rem;
  margin: 28px 0 10px;
  color: var(--sj-navy);
}

.sj-privacy p, .sj-privacy li {
  color: var(--sj-gray);
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.sj-privacy ul { padding-left: 20px; margin-bottom: 14px; }

/* ── Footer ── */
.sj-footer {
  background: var(--sj-navy);
  color: rgba(255,255,255,0.75);
  padding: 56px 0 24px;
}

.sj-footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}

.sj-footer h4 {
  font-family: var(--sj-font-head);
  color: var(--sj-white);
  font-size: 1rem;
  margin-bottom: 14px;
}

.sj-footer p, .sj-footer a { font-size: 0.88rem; color: rgba(255,255,255,0.7); }
.sj-footer a:hover { color: var(--sj-yellow); }

.sj-footer-links { list-style: none; display: flex; flex-direction: column; gap: 8px; }

.sj-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
}

/* ── Cookie Pill ── */
.sj-cookie {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--sj-navy);
  color: var(--sj-white);
  padding: 14px 24px;
  border-radius: 50px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 0 8px 32px rgba(11,31,58,0.3);
  z-index: 200;
  max-width: 90%;
  font-size: 0.88rem;
}

.sj-cookie a { color: var(--sj-yellow); text-decoration: underline; }

.sj-cookie-btn {
  background: var(--sj-yellow);
  color: var(--sj-navy);
  border: none;
  padding: 8px 20px;
  border-radius: 50px;
  font-weight: 700;
  font-family: var(--sj-font-head);
  cursor: pointer;
  white-space: nowrap;
  font-size: 0.85rem;
}

.sj-cookie.sj-hidden { display: none; }

/* ── Responsive: 900px ── */
@media (max-width: 900px) {
  .sj-hero-content { grid-template-columns: 1fr; }
  .sj-mosaic { max-width: 400px; margin: 0 auto; }
  .sj-grid-3 { grid-template-columns: 1fr 1fr; }
  .sj-features { grid-template-columns: 1fr 1fr; }
  .sj-cta { grid-template-columns: 1fr; }
  .sj-about-grid { grid-template-columns: 1fr; }
  .sj-contact-grid { grid-template-columns: 1fr; }
  .sj-footer-grid { grid-template-columns: 1fr 1fr; }
  .sj-gallery { grid-template-columns: 1fr 1fr; }
  .sj-gallery-item.sj-wide { grid-column: span 1; }
  .sj-nav { display: none; }
  .sj-burger { display: block; }
  .sj-hero-text h1 { font-size: 2.2rem; }
}

/* ── Responsive: 560px ── */
@media (max-width: 560px) {
  .sj-grid-3 { grid-template-columns: 1fr; }
  .sj-features { grid-template-columns: 1fr; }
  .sj-footer-grid { grid-template-columns: 1fr; }
  .sj-gallery { grid-template-columns: 1fr; }
  .sj-stats { grid-template-columns: 1fr; }
  .sj-hero-text h1 { font-size: 1.8rem; }
  .sj-page-hero h1 { font-size: 1.8rem; }
  .sj-section { padding: 40px 0; }
  .sj-cookie { flex-direction: column; text-align: center; border-radius: 16px; padding: 18px; }
  .sj-hero-btns { flex-direction: column; }
  .sj-btn { text-align: center; }
}