/* ==========================================================================
   Synology NAS App Download Portal - Dark Premium Glassmorphism Theme
   ========================================================================== */

:root {
  --bg-dark: #090d16;
  --bg-card: rgba(18, 25, 41, 0.7);
  --bg-card-hover: rgba(28, 38, 62, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.4);
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.35);
  --secondary: #a855f7;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  
  --shadow-glow: 0 10px 30px -10px rgba(99, 102, 241, 0.4);
  --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.4);
  --glass-backdrop: blur(16px);
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

/* Ambient Glow Background Spheres */
.background-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.glow-sphere {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.25;
}

.sphere-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  top: -100px;
  left: -100px;
}

.sphere-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--secondary) 0%, transparent 70%);
  bottom: -150px;
  right: -150px;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* Site Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.8);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.brand-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.nas-status-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--accent-emerald);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-emerald);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

/* Main Content Layout */
.main-content {
  flex: 1;
  position: relative;
  z-index: 1;
  padding-bottom: 60px;
}

/* Hero Section */
.hero-section {
  padding: 60px 0 40px;
  text-align: center;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.gradient-text {
  background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 28px;
}

/* Section Tabs Switcher (Applicazioni vs Giochi) */
.section-tabs {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(18, 25, 41, 0.85);
  border: 1px solid var(--border-color);
  padding: 6px;
  border-radius: 99px;
  margin-bottom: 28px;
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.section-tab {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: 99px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.section-tab:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.section-tab.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

.section-tab:not(.active) .tab-badge {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
}

/* Search and Filters Bar */
.search-filter-bar {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 18px;
  color: var(--text-dim);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 16px 48px 16px 50px;
  background: rgba(18, 25, 41, 0.9);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 1rem;
  font-family: var(--font-body);
  transition: all 0.25s ease;
  backdrop-filter: blur(10px);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
  background: rgba(24, 33, 54, 0.95);
}

.clear-search-btn {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.clear-search-btn:hover {
  background: rgba(99, 102, 241, 0.8);
  border-color: var(--primary);
  color: #ffffff;
  transform: translateY(-50%) scale(1.1);
}

.platform-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 99px;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  transform: translateY(-1px);
}

.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

/* Apps Grid Section */
.apps-grid-section {
  padding-top: 20px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
}

.count-badge {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  padding: 4px 12px;
  border-radius: 99px;
  font-size: 0.8rem;
  color: var(--text-muted);

}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

/* App Card Design */
.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.app-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-card), 0 0 30px rgba(99, 102, 241, 0.15);
}

.app-card-top {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.app-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

.app-info {
  flex: 1;
}

.app-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
  line-height: 1.3;
}

.app-version-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  border-radius: 6px;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.app-tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.platform-tags {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.platform-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  padding: 3px 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.app-card-bottom {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: #ffffff;
  flex: 1;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

/* No Results State */
.no-results {
  text-align: center;
  padding: 60px 20px;
}

.no-results-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.no-results h3 {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.no-results p {
  color: var(--text-muted);
}

/* Modal Overlay & Dialog */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 7, 13, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 1;
  transition: opacity 0.25s ease;
}

.modal-overlay.hidden {
  display: none;
  opacity: 0;
  pointer-events: none;
}

.modal-card {
  background: #0f172a;
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  animation: modal-slide 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modal-slide {
  from { transform: translateY(20px) scale(0.96); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--text-main);
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}

.modal-app-icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
}

.modal-title-group h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.modal-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.meta-date {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.modal-description {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.modal-section {
  margin-bottom: 24px;
}

.modal-section h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.8rem;
  color: #818cf8;
}

.download-options-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.download-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.download-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
}

.download-item-info {
  display: flex;
  flex-direction: column;
}

.download-item-title {
  font-size: 0.925rem;
  font-weight: 600;
}

.download-item-sub {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: monospace;
}

.changelog-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.changelog-list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.changelog-list li::before {
  content: "•";
  position: absolute;
  left: 6px;
  color: var(--primary);
}

/* QR Code Section */
.qr-section {
  background: rgba(15, 23, 42, 0.8);
  border: 1px dashed rgba(99, 102, 241, 0.3);
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
}

.qr-hint {
  font-size: 0.825rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.qr-code-box {
  display: inline-block;
  background: #ffffff;
  padding: 12px;
  border-radius: 12px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.qr-code-box img {
  width: 140px;
  height: 140px;
  display: block;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 24px 0;
  background: rgba(9, 13, 22, 0.9);
  position: relative;
  z-index: 1;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
}

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

.dot-separator {
  margin: 0 8px;
}

.hidden {
  display: none !important;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  .apps-grid {
    grid-template-columns: 1fr;
  }
  .search-filter-bar {
    padding: 0 10px;
  }
  .modal-card {
    padding: 20px;
  }
  .header-content {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}