/* ========================================
   Open Data Header - Fullwidth Modern Design
   ======================================== */

.datagovsg-header {
  background: linear-gradient(to bottom, #ffffff 0%, #fafafa 100%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  width: 100%;
}

.datagovsg-header .header-fullwidth {
  width: 100%;
  padding: 0 3rem;
}

.datagovsg-header .header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 2rem;
  max-width: 100%;
}

/* ===== Logo Section ===== */
.datagovsg-header .header-logo {
  flex-shrink: 0;
}

.datagovsg-header .logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  transition: transform 0.2s ease;
}

.datagovsg-header .logo-link:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.datagovsg-header .logo-svg {
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(98, 83, 232, 0.2));
}

.datagovsg-header .logo-text {
  font-size: 1.375rem;
  font-weight: 700;
  background: linear-gradient(135deg, #6253e8 0%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

/* ===== Main Navigation ===== */
.datagovsg-header .header-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  justify-content: center;
}

.datagovsg-header .nav-link {
  position: relative;
  padding: 0.625rem 1.25rem;
  color: #4b5563;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: 8px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.datagovsg-header .nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: linear-gradient(90deg, #6253e8, #8b5cf6);
  border-radius: 2px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.datagovsg-header .nav-link:hover {
  color: #6253e8;
  background: rgba(98, 83, 232, 0.05);
  text-decoration: none;
}

.datagovsg-header .nav-link:hover::before {
  transform: translateX(-50%) scaleX(1);
}

.datagovsg-header .nav-link.active {
  color: #6253e8;
  background: rgba(98, 83, 232, 0.08);
}

.datagovsg-header .nav-link.active::before {
  transform: translateX(-50%) scaleX(1);
}

/* ===== User Section ===== */
.datagovsg-header .header-user {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.datagovsg-header .user-profile {
  display: flex;
  align-items: center;
}

.datagovsg-header .user-link {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.375rem 0.75rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.2s;
}

.datagovsg-header .user-link:hover {
  background: rgba(0, 0, 0, 0.04);
  text-decoration: none;
}

.datagovsg-header .user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6253e8, #8b5cf6);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
  box-shadow: 0 2px 8px rgba(98, 83, 232, 0.3);
}

.datagovsg-header .user-name {
  color: #374151;
  font-weight: 500;
  font-size: 0.875rem;
}

/* ===== Buttons ===== */
.datagovsg-header .btn-login,
.datagovsg-header .btn-register,
.datagovsg-header .btn-logout,
.datagovsg-header .btn-admin {
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.875rem;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.datagovsg-header .btn-login {
  background: linear-gradient(135deg, #6253e8 0%, #7c3aed 100%);
  color: white;
  box-shadow: 0 2px 8px rgba(98, 83, 232, 0.3);
}

.datagovsg-header .btn-login:hover {
  background: linear-gradient(135deg, #5144d3 0%, #6d28d9 100%);
  box-shadow: 0 4px 12px rgba(98, 83, 232, 0.4);
  transform: translateY(-1px);
  text-decoration: none;
  color: white;
}

.datagovsg-header .btn-register {
  background: white;
  color: #6253e8;
  border: 1px solid #6253e8;
}

.datagovsg-header .btn-register:hover {
  background: #6253e8;
  color: white;
  text-decoration: none;
}

.datagovsg-header .btn-logout {
  background: white;
  color: #6b7280;
  border: 1px solid #e5e7eb;
}

.datagovsg-header .btn-logout:hover {
  background: #f9fafb;
  border-color: #d1d5db;
  text-decoration: none;
}

.datagovsg-header .btn-admin {
  background: transparent;
  color: #6b7280;
  padding: 0.5rem;
  border: 1px solid #e5e7eb;
}

.datagovsg-header .btn-admin:hover {
  background: #f9fafb;
  color: #6253e8;
  text-decoration: none;
}

/* ===== Mobile Toggle ===== */
.datagovsg-header .mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.2s;
}

.datagovsg-header .mobile-toggle:hover {
  background: rgba(0, 0, 0, 0.04);
}

.datagovsg-header .mobile-toggle .bar {
  width: 24px;
  height: 2px;
  background: #374151;
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.datagovsg-header .mobile-toggle:hover .bar {
  background: #6253e8;
}

/* ===== Mobile Navigation ===== */
.datagovsg-header .mobile-nav {
  display: none;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  background: white;
}

.datagovsg-header .mobile-nav.show {
  display: block;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.datagovsg-header .mobile-nav-inner {
  padding: 1rem 0;
}

.datagovsg-header .mobile-link {
  display: flex;
  align-items: center;
  padding: 0.875rem 1rem;
  color: #374151;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  border-left: 3px solid transparent;
  transition: all 0.2s;
  background: none;
  border-top: none;
  border-right: none;


.datagovsg-header .mobile-link:hover {
  color: #6253e8;
  background: rgba(98, 83, 232, 0.05);
  border-left-color: #6253e8;
  text-decoration: none;
}

.datagovsg-header .mobile-link-primary {
  color: #6253e8;
  font-weight: 600;
}

.datagovsg-header .mobile-link-btn {
  font-family: inherit;
}

.datagovsg-header .mobile-divider {
  height: 1px;
  background: rgba(0, 0, 0, 0.06);
  margin: 0.5rem 0;
}

/* ===== Responsive ===== */
@media (max-width: 1400px) {
  .datagovsg-header .header-fullwidth {
    padding: 0 2rem;
  }
}

@media (max-width: 992px) {
  .datagovsg-header .header-fullwidth {
    padding: 0 1.5rem;
  }

  .datagovsg-header .header-nav {
    gap: 0.25rem;
  }

  .datagovsg-header .nav-link {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }
}

@media (max-width: 768px) {
  .datagovsg-header .header-fullwidth {
    padding: 0 1rem;
  }

  .datagovsg-header .header-content {
    height: 64px;
  }

  .datagovsg-header .logo-text {
    font-size: 1.25rem;
  }

  .datagovsg-header .header-nav,
  .datagovsg-header .header-user {
    display: none;
  }

  .datagovsg-header .mobile-toggle {
    display: flex;
  }
}

@media (max-width: 480px) {
  .datagovsg-header .header-fullwidth {
    padding: 0 0.75rem;
  }

  .datagovsg-header .logo-text {
    font-size: 1.125rem;
  }

  .datagovsg-header .logo-svg {
    width: 28px;
    height: 28px;
  }
}
}