/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --purple: #393185;
  --purple-dark: #2A2563;
  --purple-light: #4A4298;
  --cyan: #00B8D4;
  --cyan-light: #4DD0E1;
  --white: #FFFFFF;
  --off-white: #F4F6FA;
  --text-dark: #2A2A3C;
  --text-muted: #5C5C7A;
  --shadow: 0 2px 12px rgba(61, 59, 145, 0.10);
  --shadow-lg: 0 8px 32px rgba(61, 59, 145, 0.15);
  --radius: 10px;
  --transition: 0.25s ease;
}

@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&family=Quicksand:wght@400;500;600;700&display=swap');

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Quicksand', sans-serif;
  color: var(--text-dark);
  background: var(--off-white);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* ===== HEADER ===== */
.site-header {
  background: var(--purple);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(61, 59, 145, 0.3);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 32px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-group img {
  height: 100px;
  width: auto;
}

.logo-text h1 {
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: 3.5rem;
  color: var(--white);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.logo-text p {
  font-family: 'Quicksand', sans-serif;
  font-weight: 600;
  font-size: 1.5rem;
  color: var(--cyan-light);
  letter-spacing: 0.02em;
}

/* ===== NAVIGATION ===== */
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav > li {
  list-style: none;
  position: relative;
}

.main-nav > li > a {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 10px 20px;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--white);
  border-radius: 8px;
  transition: background var(--transition);
}

.main-nav > li > a:hover,
.main-nav > li > a.active {
  background: rgba(255, 255, 255, 0.15);
}

.main-nav > li > a .arrow {
  font-size: 0.6em;
  transition: transform var(--transition);
}

.main-nav > li:hover > a .arrow {
  transform: rotate(180deg);
}

/* Dropdown */
.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 240px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  padding: 8px;
  list-style: none;
}

.main-nav > li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown li a {
  display: block;
  padding: 10px 16px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-dark);
  border-radius: 6px;
  transition: all var(--transition);
}

.dropdown li a:hover {
  background: var(--purple);
  color: var(--white);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--white);
  margin: 5px 0;
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(135deg, var(--purple) 0%, var(--purple-dark) 100%);
  padding: 80px 32px 90px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(0, 194, 222, 0.25) 0%, transparent 90%),
    radial-gradient(circle at 80% 20%, rgba(110, 105, 190, 0.33) 0%, transparent 90%); 
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero h2 {
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: 2.8rem;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  max-width: 560px;
  margin: 0 auto 36px;
}

.hero .btn-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--cyan);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(0, 184, 212, 0.35);
}

.btn-primary:hover {
  background: var(--cyan-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 184, 212, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--purple);
  color: var(--white);
}

.btn-secondary:hover {
  background: var(--purple-light);
  transform: translateY(-2px);
}

/* ===== MAIN CONTENT ===== */
main {
  flex: 1;
}

.section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 64px 32px;
}

.section-title {
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: 2rem;
  color: var(--purple);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 40px;
  max-width: 600px;
}

/* ===== CARDS ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid rgba(61, 59, 145, 0.06);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.card h3 {
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.65;
}

.card .btn {
  margin-top: 20px;
  padding: 10px 22px;
  font-size: 0.9rem;
}

/* ===== PAGE HEADER (sub-pages) ===== */
.page-header {
  background: linear-gradient(135deg, var(--purple) 0%, var(--purple-dark) 100%);
  padding: 50px 32px 55px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 70%, rgba(0, 184, 212, 0.12) 0%, transparent 50%);
  pointer-events: none;
}

.page-header h2 {
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: 2.4rem;
  color: var(--white);
  position: relative;
  z-index: 1;
}

.page-header p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.05rem;
  font-weight: 500;
  margin-top: 10px;
  position: relative;
  z-index: 1;
}

/* ===== CONTENT BLOCKS ===== */
.content-block {
  max-width: 800px;
  margin: 0 auto;
  padding: 56px 32px;
}

.content-block h3 {
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--purple);
  margin: 32px 0 12px;
}

.content-block h3:first-child {
  margin-top: 0;
}

.content-block p {
  color: var(--text-dark);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.content-block ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.content-block ul li {
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

/* ===== EMBED CONTAINER ===== */
.embed-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 48px 32px;
}

.embed-placeholder {
  width: 100%;
  min-height: 600px;
  background: var(--white);
  border: 2px dashed rgba(61, 59, 145, 0.2);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  color: var(--text-muted);
  font-weight: 600;
}

.embed-placeholder .icon {
  font-size: 2.5rem;
  opacity: 0.5;
}

/* ===== ABOUT PAGE ===== */
.about-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 56px 32px;
}

.about-content p {
  color: var(--text-dark);
  font-size: 1.02rem;
  font-weight: 500;
  margin-bottom: 18px;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--purple-dark);
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  padding: 32px;
  font-size: 0.88rem;
  font-weight: 600;
  margin-top: auto;
}

.site-footer a {
  color: var(--cyan-light);
}

.site-footer a:hover {
  text-decoration: underline;
}

/* ===== FEATURE STRIP (Homepage) ===== */
.feature-strip {
  background: var(--white);
  border-bottom: 1px solid rgba(61, 59, 145, 0.06);
}

.feature-strip .section {
  padding: 48px 32px;
}

.feature-strip .card-grid {
  grid-template-columns: repeat(3, 1fr);
}

/* ===== INFO SECTION ===== */
.info-section {
  background: var(--white);
}

.info-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.info-columns h3 {
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--purple);
  margin-bottom: 12px;
}

.info-columns p {
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.7;
}

/* ===== RESOURCE CARDS ===== */
.resource-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.resource-card .card-body {
  flex: 1;
}

/* ===== VIRTUAL FIELDTRIP CARDS ===== */
.fieldtrip-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.fieldtrip-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(61, 59, 145, 0.06);
}

.fieldtrip-item h3 {
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.fieldtrip-item p {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 32px 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--purple);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb span {
  margin: 0 6px;
  opacity: 0.5;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 860px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    padding-top: 12px;
    gap: 0;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav > li > a {
    padding: 12px 16px;
    border-radius: 6px;
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(255, 255, 255, 0.08);
    padding: 4px 0 4px 16px;
    display: none;
  }

  .main-nav > li.dropdown-open .dropdown {
    display: block;
  }

  .dropdown li a {
    color: rgba(255, 255, 255, 0.85);
  }

  .dropdown li a:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--white);
  }

  .hero h2 {
    font-size: 2rem;
  }

  .hero {
    padding: 56px 24px 64px;
  }

  .feature-strip .card-grid {
    grid-template-columns: 1fr;
  }

  .info-columns {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .page-header h2 {
    font-size: 1.8rem;
  }

  .logo-text h1 {
    font-size: 1.35rem;
  }

  .logo-group img {
    height: 48px;
  }
}