/* ==========================================================================
   1. CSS RESET & VARIABEL GLOBAL (TONE: BIRU CYAN)
   ========================================================================== */
:root {
  /* Warna Utama Brand Kelas Bisa (Cyan Tone) */
  --primary-cyan: #00B4D8;       /* Cyan Cerah Utama */
  --primary-cyan-dark: #0077B6;  /* Cyan Tua untuk Hover/State */
  --brand-deep-blue: #03045E;    /* Biru Gelap untuk Kontras Header/Text */
  
  /* Aksesibilitas & Aksen */
  --accent-orange: #FF6B00;       /* Warna Tombol Highlight / Hot Badge */
  --accent-gold: #FFC72C;          /* Aksen Prestasi/Bintang */
  
  /* Warna Netral & Background */
  --bg-light: #F4F9FC;           /* Soft Cyan Tint */
  --bg-white: #FFFFFF;
  --text-main: #0F172A;
  --text-muted: #475569;
  --border-color: #E2E8F0;
  
  /* Layout & Shadow */
  --max-width: 1200px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 4px rgba(0, 180, 216, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 180, 216, 0.08);
  --shadow-lg: 0 10px 25px rgba(3, 4, 94, 0.12);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-light);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

/* ==========================================================================
   2. HEADER & NAVIGATION STYLING
   ========================================================================== */
.main-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--bg-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.8rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.brand-logo .logo-img {
  height: 42px;
  width: auto;
}

/* Nav Menu */
.main-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.nav-link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--brand-deep-blue);
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-link:hover {
  color: var(--primary-cyan);
}

.arrow-icon {
  font-size: 0.65rem;
  transition: var(--transition);
}

.badge-new {
  background-color: var(--accent-orange);
  color: #FFF;
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 20px;
  font-weight: 700;
}

.highlight-link {
  color: var(--primary-cyan-dark);
  background-color: #E0F2FE;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
}

.highlight-link:hover {
  background-color: var(--primary-cyan);
  color: #FFF;
}

/* ==========================================================================
   3. DROPDOWN & MEGA MENU STYLING
   ========================================================================== */
.has-dropdown {
  position: relative;
}

/* Mega Menu Sub-brand */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: 720px;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  padding: 1.2rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  pointer-events: none;
}

.has-dropdown:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.has-dropdown:hover .arrow-icon {
  transform: rotate(180deg);
}

.mega-menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
}

.mega-card {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.8rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-light);
  border: 1px solid transparent;
}

.mega-card:hover {
  background-color: #FFF;
  border-color: var(--primary-cyan);
  box-shadow: var(--shadow-sm);
}

.mega-card-icon {
  font-size: 1.5rem;
  background: #FFF;
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.mega-card-info h4 {
  font-size: 0.9rem;
  color: var(--brand-deep-blue);
  margin-bottom: 0.2rem;
}

.mega-card-info p {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.3;
}

/* Simple Dropdown (Tentang & Program Khusus) */
.simple-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  width: 200px;
  background: var(--bg-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 1002;
}

.has-dropdown:hover .simple-dropdown {
  opacity: 1;
  visibility: visible;
}

.simple-dropdown a {
  display: block;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.simple-dropdown a:hover {
  background-color: var(--bg-light);
  color: var(--primary-cyan-dark);
}

/* ==========================================================================
   4. PORTAL AKSES CEPAT & HAMBURGER MENU
   ========================================================================== */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.portal-dropdown {
  position: relative;
}

.btn-portal {
  background: var(--primary-cyan);
  color: #FFF;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
}

.btn-portal:hover {
  background: var(--primary-cyan-dark);
}

.portal-menu {
  position: absolute;
  right: 0;
  top: 110%;
  width: 210px;
  background: var(--bg-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  padding: 0.5rem 0;
  display: none;
  z-index: 1001;
}

.portal-dropdown.active .portal-menu {
  display: block;
}

.portal-menu a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
}

.portal-menu a:hover {
  background-color: #E0F2FE;
  color: var(--primary-cyan-dark);
}

/* Hamburger Toggle Mobile */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 3px;
  background-color: var(--brand-deep-blue);
  border-radius: 2px;
  transition: var(--transition);
}

/* ==========================================================================
   5. FOOTER STYLING & LEGALITAS
   ========================================================================== */
.main-footer {
  background-color: var(--brand-deep-blue);
  color: #E2E8F0;
  padding: 3rem 0 1.5rem 0;
  margin-top: 4rem;
}

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

/* Banner Legalitas Resmi */
.footer-legal-banner {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.5rem;
  margin-bottom: 2.5rem;
}

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

.legal-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.legal-icon {
  font-size: 1.8rem;
}

.legal-text strong {
  display: block;
  color: #FFF;
  font-size: 0.85rem;
  line-height: 1.2;
}

.legal-text p {
  font-size: 0.75rem;
  color: var(--primary-cyan);
  margin-top: 2px;
}

/* Footer Content Grid */
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr 1.4fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-logo {
  height: 40px;
  margin-bottom: 1rem;
  filter: brightness(0) invert(1);
}

.footer-desc {
  font-size: 0.85rem;
  color: #94A3B8;
  line-height: 1.6;
  margin-bottom: 1.2rem;
}

.contact-info-primary {
  font-size: 0.85rem;
  color: #CBD5E1;
  margin-bottom: 1rem;
}

.contact-info-primary a {
  color: var(--primary-cyan);
  font-weight: 600;
}

.social-links {
  display: flex;
  gap: 0.8rem;
}

.social-icon {
  background: rgba(255, 255, 255, 0.1);
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.9rem;
}

.social-icon:hover {
  background: var(--primary-cyan);
}

.footer-title {
  color: #FFF;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-links li, .footer-links-ig li {
  margin-bottom: 0.6rem;
}

.footer-links a, .footer-links-ig a {
  font-size: 0.85rem;
  color: #94A3B8;
}

.footer-links-ig a span {
  color: var(--primary-cyan);
  font-size: 0.78rem;
  font-weight: 500;
}

.footer-links a:hover, .footer-links-ig a:hover {
  color: #FFF;
  padding-left: 4px;
}

.footer-portal-list li {
  margin-bottom: 0.6rem;
}

.footer-portal-list a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--accent-gold);
}

.footer-portal-list a:hover {
  color: #FFF;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.2rem;
  text-align: center;
  font-size: 0.8rem;
  color: #64748B;
}

/* ==========================================================================
   6. RESPONSIVE DESIGN (MOBILE & TABLET)
   ========================================================================== */
@media (max-width: 992px) {
  .mega-menu {
    width: 100%;
    left: 0;
    transform: none;
  }
  .legal-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 60px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 60px);
    background-color: var(--bg-white);
    padding: 1.5rem;
    transition: var(--transition);
    overflow-y: auto;
  }

  .main-nav.active {
    left: 0;
  }

  .main-nav .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .mega-menu, .simple-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    width: 100%;
    box-shadow: none;
    border: none;
    display: none;
    padding: 0.5rem 0;
    transform: none;
  }

  .has-dropdown.open-dropdown .mega-menu,
  .has-dropdown.open-dropdown .simple-dropdown {
    display: block;
  }

  .mega-menu-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}