* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Arial, sans-serif;
  color: #1f2937;
  background:
    linear-gradient(135deg, #f7fbff 0%, #eef4ff 45%, #fff7fb 100%);
  overflow-x: hidden;
}

.bg-orb {
  position: fixed;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  filter: blur(45px);
  opacity: 0.45;
  z-index: -1;
}

.orb-1 {
  top: -80px;
  left: -70px;
  background: #a7d8ff;
}

.orb-2 {
  bottom: -90px;
  right: -80px;
  background: #ffd0e8;
}

.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
  padding: 24px;
  min-height: 100vh;
}

.glass {
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: 0 18px 45px rgba(80, 100, 130, 0.14);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.sidebar {
  border-radius: 28px;
  padding: 22px;
  height: calc(100vh - 48px);
  position: sticky;
  top: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

.logo-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, #6aa9ff, #b36bff);
  color: white;
  font-weight: 800;
  font-size: 22px;
}

.logo h1 {
  margin: 0;
  font-size: 22px;
}

.logo p {
  margin: 2px 0 0;
  color: #64748b;
  font-size: 13px;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.nav-btn {
  border: 0;
  padding: 14px 16px;
  text-align: left;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.48);
  color: #334155;
  font-weight: 700;
  cursor: pointer;
  transition: 0.25s ease;
}

.nav-btn:hover,
.nav-btn.active {
  background: rgba(255, 255, 255, 0.9);
  transform: translateX(6px);
  box-shadow: 0 10px 24px rgba(100, 116, 139, 0.16);
}

.content {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.topbar {
  border-radius: 28px;
  padding: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.topbar h2 {
  margin: 0;
  font-size: 28px;
}

.topbar p {
  margin: 4px 0 0;
  color: #64748b;
}

.search-box {
  display: flex;
  gap: 10px;
}

.search-box input {
  width: 260px;
  border: 0;
  outline: none;
  border-radius: 16px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.75);
  font-weight: 600;
}

.search-box button,
.primary-btn {
  border: 0;
  border-radius: 16px;
  padding: 14px 18px;
  background: linear-gradient(135deg, #4f8cff, #9c6bff);
  color: white;
  font-weight: 800;
  cursor: pointer;
  transition: 0.25s ease;
}

.search-box button:hover,
.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(79, 140, 255, 0.32);
}

.hero {
  border-radius: 32px;
  padding: 42px;
  min-height: 240px;
  display: flex;
  align-items: center;
}

.tag {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(79, 140, 255, 0.12);
  color: #2563eb;
  font-weight: 800;
  margin-bottom: 14px;
}

.hero h3 {
  margin: 0;
  font-size: 40px;
  max-width: 700px;
}

.hero p {
  color: #64748b;
  max-width: 620px;
  line-height: 1.6;
}

.section-title h3 {
  margin: 0;
  font-size: 24px;
}

.section-title p {
  margin: 4px 0 0;
  color: #64748b;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.category-card {
  border-radius: 24px;
  min-height: 140px;
  padding: 22px;
  font-size: 20px;
  font-weight: 900;
  display: flex;
  align-items: end;
  cursor: pointer;
  transition: 0.25s ease;
}

.category-card:hover {
  transform: translateY(-6px) scale(1.015);
  box-shadow: 0 20px 45px rgba(80, 100, 130, 0.2);
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
    height: auto;
    top: 0;
  }

  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box input {
    width: 100%;
  }

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