/* Modern Clean Theme Styles */

:root {
  /* Color Palette */
  --primary: #3b82f6;
  --secondary: #6366f1;
  --accent: #8b5cf6;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  /* Grays */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
}

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

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  scroll-behavior: smooth;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
}

/* Card Styles */
.project-card {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

/* Card Image */
.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid var(--gray-200);
}

.no-signal-image {
  background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-500);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Card Content */
.card-content {
  padding: var(--space-xl);
  position: relative;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  padding-right: 5rem;
}

.card-developer {
  color: var(--primary);
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: var(--space-md);
}

.card-category {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  display: inline-block;
  background: var(--gray-200);
  color: var(--gray-600);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.625rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card-summary {
  color: var(--gray-600);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

/* Card Actions */
.card-actions {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: white;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}

.btn-outline:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gray-500);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gray-400);
}

.status-online .status-dot {
  background: var(--success);
  box-shadow: 0 0 6px rgba(16, 185, 129, 0.4);
}

.status-offline .status-dot {
  background: var(--gray-400);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.project-card {
  animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.project-card:nth-child(2) { animation-delay: 0.1s; }
.project-card:nth-child(3) { animation-delay: 0.2s; }
.project-card:nth-child(4) { animation-delay: 0.3s; }
.project-card:nth-child(5) { animation-delay: 0.4s; }
.project-card:nth-child(6) { animation-delay: 0.5s; }

/* Responsive Design */
@media (max-width: 768px) {
  .card-content {
    padding: var(--space-lg);
  }
  
  .card-title {
    font-size: 1.125rem;
  }
  
  .btn {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.8rem;
  }
}

/* Focus States */
.btn:focus,
select:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Smooth Transitions */
* {
  transition-property: color, background-color, border-color, text-decoration-color, fill, stroke, opacity, box-shadow, transform, filter, backdrop-filter;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

/* Sticky Filter */
.filter-container {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.filter-sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  padding: var(--space-md) 0;
  transform: translateY(-100%);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.filter-sticky.visible {
  transform: translateY(0);
  opacity: 1;
}

.filter-sticky .filter-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.filter-sticky .filter-box {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  max-width: 90vw;
  width: auto;
}

.filter-sticky label {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-700);
  text-align: center;
}

.filter-sticky select {
  min-width: 180px;
  max-width: 100%;
}