:root {
  --bg-color: #080c14;
  --card-bg: rgba(17, 24, 39, 0.6);
  --border-color: rgba(255, 255, 255, 0.06);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --primary: #6366f1;
  --primary-glow: rgba(99, 102, 241, 0.15);
  --accent: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.15);
  --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-color: var(--bg-color);
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
  box-sizing: border-box;
}

/* Header & Navigation */
header {
  text-align: center;
  margin-bottom: 3.5rem;
}

header h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  margin: 0 0 1rem 0;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #ffffff 40%, #c7d2fe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 2rem;
  transition: color 0.2s;
}

.back-link:hover {
  color: var(--text-primary);
}

/* Search Box */
.search-wrapper {
  position: relative;
  max-width: 500px;
  margin: 0 auto 3rem auto;
}

.search-input {
  width: 100%;
  padding: 1rem 1.25rem;
  padding-left: 3rem;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: #fff;
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

.search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  pointer-events: none;
}

/* Grid Layouts */
.grid-categories {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  width: 100%;
}

.category-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-glow) 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.3s;
}

.category-card:hover {
  transform: translateY(-5px);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 20px 40px -15px rgba(99, 102, 241, 0.2);
}

.category-card:hover::before {
  opacity: 1;
}

.category-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: inline-block;
}

.category-card h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.3rem;
  font-family: 'Space Grotesk', sans-serif;
}

.category-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  flex-grow: 1;
}

.category-meta {
  margin-top: 1.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: 'Space Grotesk', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.view-btn {
  color: var(--primary);
  font-weight: 600;
}

/* App List Layout */
.app-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.app-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.app-item:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateX(4px);
  background: rgba(255, 255, 255, 0.01);
}

.app-info h3 {
  margin: 0 0 0.25rem 0;
  font-size: 1.1rem;
  font-family: 'Space Grotesk', sans-serif;
}

.app-info p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.app-action {
  font-size: 1.25rem;
  color: var(--text-secondary);
  transition: color 0.2s, transform 0.2s;
}

.app-item:hover .app-action {
  color: var(--primary);
  transform: translateX(3px);
}

.no-results {
  text-align: center;
  color: var(--text-secondary);
  padding: 3rem;
  font-size: 1.1rem;
  display: none;
}