/* ============================================
   Waluku Studio - Modern Design System
   ============================================ */

/* --- CSS Variables (Design Tokens) --- */
:root {
  /* Colors */
  --color-primary: #6C63FF;
  --color-primary-dark: #5A52D5;
  --color-primary-light: #8B85FF;
  --color-secondary: #FF6B6B;
  --color-accent: #00D2FF;
  --color-bg: #0A0A1A;
  --color-bg-secondary: #12122A;
  --color-bg-card: #1A1A3E;
  --color-bg-card-hover: #222255;
  --color-text: #FFFFFF;
  --color-text-muted: #8B8BA7;
  --color-text-dim: #5A5A7A;
  --color-border: rgba(108, 99, 255, 0.15);
  --color-border-hover: rgba(108, 99, 255, 0.3);
  --color-glass: rgba(255, 255, 255, 0.05);
  --color-glass-border: rgba(255, 255, 255, 0.1);
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-danger: #EF4444;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --section-padding: 6rem 0;
  --container-max: 1200px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(108, 99, 255, 0.15);
  --shadow-glow-strong: 0 0 60px rgba(108, 99, 255, 0.25);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-primary);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

main {
  flex: 1;
  padding-top: 76px; /* offset for fixed navbar */
}

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

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary);
}

::selection {
  background: var(--color-primary);
  color: white;
}

/* --- Background Effects --- */
.bg-grid-pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background-image: 
    linear-gradient(rgba(108, 99, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108, 99, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
}

.bg-glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.bg-glow-orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108, 99, 255, 0.08) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  animation: floatOrb 20s ease-in-out infinite;
}

.bg-glow-orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 210, 255, 0.06) 0%, transparent 70%);
  bottom: -150px;
  left: -150px;
  animation: floatOrb 25s ease-in-out infinite reverse;
}

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(50px, -50px); }
  66% { transform: translate(-30px, 30px); }
}

/* --- Animated Particles --- */
.particles-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.3;
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.3;
  }
  90% {
    opacity: 0.3;
  }
  100% {
    transform: translateY(-100px) rotate(720deg);
    opacity: 0;
  }
}

/* --- Glass Morphism Container --- */
.glass-container {
  position: relative;
  z-index: 1;
}

/* --- Navbar --- */
.navbar {
  background: rgba(10, 10, 26, 0.8) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border-bottom: 1px solid var(--color-glass-border);
  padding: 0.75rem 0;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(10, 10, 26, 0.95) !important;
  box-shadow: var(--shadow-md);
  padding: 0.5rem 0;
}

.navbar-brand {
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.5px;
  position: relative;
}

.navbar-brand .brand-text {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-brand::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  border-radius: var(--radius-full);
  opacity: 0.5;
}

.nav-link {
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 1rem !important;
  margin: 0 0.2rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  color: var(--color-text-muted) !important;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text) !important;
  background: var(--color-glass);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.navbar-toggler {
  border: 1px solid var(--color-glass-border);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
}

.navbar-toggler:focus {
  box-shadow: none;
  border-color: var(--color-primary);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* Nav Admin Button */
.nav-admin-btn {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)) !important;
  border: none !important;
  color: white !important;
  font-weight: 600 !important;
  font-size: 0.8rem !important;
  padding: 0.4rem 1.2rem !important;
  border-radius: var(--radius-full) !important;
  transition: all var(--transition-normal) !important;
  box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3) !important;
}

.nav-admin-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(108, 99, 255, 0.4) !important;
}

/* --- Hero Section --- */
.hero-section {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 0 4rem;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(108, 99, 255, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(0, 210, 255, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  padding: 0.4rem 1.2rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease-out;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-title-gradient {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-accent) 50%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  padding: 0.8rem 2rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.3);
}

.hero-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(108, 99, 255, 0.4);
  color: white;
}

.hero-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  color: var(--color-text);
  padding: 0.8rem 2rem;
  border-radius: var(--radius-full);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.hero-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-border-hover);
  color: var(--color-text);
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 4rem;
  animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero-stat-item {
  text-align: center;
}

.hero-stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-top: 0.2rem;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-dim);
  font-size: 0.75rem;
  animation: fadeInUp 0.6s ease-out 0.6s both;
}

.scroll-indicator-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-text-dim), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.3; transform: scaleY(0.5); }
}

/* --- Section Styling --- */
.section {
  padding: var(--section-padding);
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-primary-light);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 1rem;
}

.section-description {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Filter Buttons --- */
.filter-section {
  display: flex;
  justify-content: center;
  margin-bottom: 3rem;
}

.filter-group {
  display: inline-flex;
  background: var(--color-bg-secondary);
  padding: 0.4rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  gap: 0.2rem;
}

.filter-btn {
  font-size: 0.85rem;
  padding: 0.5rem 1.5rem;
  border: none;
  background: transparent;
  border-radius: var(--radius-full);
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.filter-btn:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.filter-btn.active {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
}

/* --- App Cards Grid --- */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

/* --- App Card --- */
.app-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  position: relative;
  cursor: pointer;
}

.app-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-glow);
}

.app-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

.app-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.app-card-link:hover {
  color: inherit;
}

.app-card-icon {
  aspect-ratio: 1;
  background: var(--color-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

.app-card-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-slow);
}

.app-card:hover .app-card-icon img {
  transform: scale(1.1) rotate(-3deg);
}

.app-card-icon .fallback-icon {
  font-size: 3rem;
  opacity: 0.5;
}

/* Card icon glow effect */
.app-card-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(108, 99, 255, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.app-card:hover .app-card-icon::after {
  opacity: 1;
}

.app-card-body {
  padding: 1.2rem 1.2rem 1rem;
}

.app-card-title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.3rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-card-description {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}

.app-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.2rem 1.2rem;
  gap: 0.5rem;
}

.app-card-platform-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
}

.platform-android {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
}

.platform-ios {
  background: rgba(99, 102, 241, 0.15);
  color: #818CF8;
}

.app-card-store-link {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color var(--transition-fast);
}

.app-card-store-link:hover {
  color: var(--color-primary-light);
}

/* --- Page Content --- */
.page-content {
  max-width: 800px;
  margin: 0 auto 4rem;
  padding: 0 1rem;
}

.page-content h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 2rem;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2rem 0 1rem;
  color: var(--color-text);
}

.page-content p {
  margin-bottom: 1.2rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.page-content a {
  color: var(--color-primary-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* --- 404 Page --- */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.error-code {
  font-size: clamp(6rem, 15vw, 10rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 1rem;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.error-description {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
  position: relative;
  z-index: 1;
}

.footer-brand {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.footer-brand .brand-text {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-description {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  max-width: 300px;
  line-height: 1.7;
}

.footer-heading {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-text);
  margin-bottom: 1.2rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.footer-links a:hover {
  color: var(--color-primary-light);
  transform: translateX(3px);
}

.footer-divider {
  border-color: var(--color-border);
  margin: 2rem 0;
  opacity: 0.5;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copyright {
  color: var(--color-text-dim);
  font-size: 0.85rem;
}

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

.footer-social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  color: var(--color-text-muted);
  transition: all var(--transition-normal);
  font-size: 0.9rem;
}

.footer-social-link:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  transform: translateY(-3px);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* --- Responsive --- */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: rgba(10, 10, 26, 0.98);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-top: 0.5rem;
    border: 1px solid var(--color-glass-border);
  }

  .nav-link.active::after {
    display: none;
  }

  .hero-stats {
    gap: 2rem;
  }

  .apps-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
  }
}

@media (max-width: 767.98px) {
  :root {
    --section-padding: 4rem 0;
  }

  .hero-section {
    min-height: auto;
    padding: 6rem 0 3rem;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .hero-stat-number {
    font-size: 1.5rem;
  }

  .filter-group {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    border-radius: var(--radius-md);
  }

  .filter-btn {
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
    white-space: nowrap;
  }

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

  .app-card-icon {
    padding: 1.5rem;
  }

  .app-card-body {
    padding: 0.8rem 0.8rem 0.5rem;
  }

  .app-card-title {
    font-size: 0.85rem;
  }

  .app-card-description {
    font-size: 0.75rem;
  }

  .app-card-footer {
    padding: 0.5rem 0.8rem 0.8rem;
    flex-wrap: wrap;
  }

  .footer {
    padding: 3rem 0 1.5rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 575.98px) {
  .apps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
  }

  .filter-group {
    padding: 0.3rem;
  }

  .filter-btn {
    padding: 0.35rem 0.8rem;
    font-size: 0.75rem;
  }
}

/* Utility: loading shimmer */
.shimmer {
  background: linear-gradient(
    90deg,
    var(--color-bg-card) 25%,
    var(--color-bg-card-hover) 50%,
    var(--color-bg-card) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}