@font-face {
  font-family: 'Play';
  src: url('../fonts/play.woff2');
  font-display: swap;
}

:root {
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #0f172a;
  --text-secondary: #64748b;
  --accent: #4f46e5;
  --accent-light: #e0e7ff;
  --accent-hover: #4338ca;
  --accent-gradient-start: #6366f1;
  --accent-gradient-end: #4f46e5;
  --border: #e2e8f0;
  --success: #10b981;
  --warning: #f59e0b;
  
  --text-font: 'Play', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --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);
  --shadow-glow: 0 0 40px -10px var(--accent-light);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--text-font);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Selection */
::selection {
  background: var(--accent-light);
  color: var(--accent);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Header */
header {
  padding: 3rem 0 2rem;
  position: relative;
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
}

.logo-wrapper {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-gradient-start) 0%, var(--accent-gradient-end) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--text-font);
  font-size: 1.5rem;
  font-weight: 700;
  box-shadow: var(--shadow-lg), 0 0 20px rgba(79, 70, 229, 0.3);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.logo-wrapper:hover .logo-icon {
  transform: scale(1.05) rotate(-3deg);
  box-shadow: var(--shadow-xl), 0 0 30px rgba(79, 70, 229, 0.4);
}

header h1 {
  font-family: var(--text-font);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text-main) 0%, var(--accent) 50%, var(--accent-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

header h1::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-gradient-start));
  border-radius: 2px;
}

.tagline {
  color: var(--text-secondary);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 500;
  max-width: 500px;
  margin-top: 0.5rem;
}

/* Section Styling */
section {
  margin-bottom: 4rem;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

section:nth-child(1) {
  animation-delay: 0.1s;
}

section:nth-child(2) {
  animation-delay: 0.2s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section-header {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
}

h2 {
  font-family: var(--text-font);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-main);
}

.section-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Grid Layouts */
.grid-top-5 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.grid-all {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .grid-all {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .grid-top-5 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-top-5 .card:first-child {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    color: white;
    border: none;
    position: relative;
    overflow: hidden;
  }
  
  .grid-top-5 .card:first-child h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: white;
    position: relative;
    z-index: 1;
  }
  
  .grid-top-5 .card:first-child p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.05rem;
    position: relative;
    z-index: 1;
  }
  
  .grid-top-5 .card:first-child .meta span {
    color: rgba(255, 255, 255, 0.7);
    position: relative;
    z-index: 1;
  }
  
  .grid-top-5 .card:first-child .category-tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    backdrop-filter: blur(4px);
    position: relative;
    z-index: 1;
  }
  
  .grid-top-5 .card:first-child .read-link {
    color: white;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    z-index: 1;
  }
  
  .grid-top-5 .card:first-child .read-link:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
  }
}

@media (min-width: 1024px) {
  .grid-all {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Card Styling */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-gradient-start));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  border-color: transparent;
}

.card:hover::before {
  transform: scaleX(1);
}

/* Meta & Tags */
.meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.category-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.4rem 0.9rem;
  background: linear-gradient(135deg, var(--accent-light) 0%, rgba(99, 102, 241, 0.15) 100%);
  color: var(--accent);
  border-radius: 20px;
  transition: all var(--transition-fast);
}

.card:hover .category-tag {
  background: var(--accent);
  color: white;
}

.read-time {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.read-time::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--text-secondary);
  border-radius: 50%;
}

.card h3 {
  font-family: var(--text-font);
  font-size: clamp(1.2rem, 2.5vw, 1.4rem);
  font-weight: 700;
  margin-bottom: 0.875rem;
  line-height: 1.35;
  color: var(--text-main);
  transition: color var(--transition-fast);
}

.card:hover h3 {
  color: var(--accent);
}

.card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Read Link */
.read-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  text-decoration: none;
  margin-top: auto;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.read-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.read-link:hover::before {
  left: 100%;
}

.read-link:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  gap: 0.75rem;
}

.read-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.read-link:hover svg {
  transform: translateX(4px);
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

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

.skeleton-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.skeleton-meta {
  display: flex;
  justify-content: space-between;
}

.skeleton-tag {
  width: 80px;
  height: 24px;
}

.skeleton-time {
  width: 60px;
  height: 16px;
}

.skeleton-title {
  width: 100%;
  height: 28px;
}

.skeleton-title:nth-child(3) {
  width: 70%;
}

.skeleton-text {
  width: 100%;
  height: 16px;
}

.skeleton-text:nth-child(5) {
  width: 85%;
}

.skeleton-text:nth-child(6) {
  width: 60%;
}

.skeleton-button {
  width: 100%;
  height: 44px;
  margin-top: auto;
}

/* Loading State */
.loading {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
}

.loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 1rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Pagination */
.pagination-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.page-btn {
  border: 1px solid var(--border);
  background: white;
  cursor: pointer;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  width: 48px;
  color: var(--text-main);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.page-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.page-btn svg {
  width: 20px;
  height: 20px;
  position: relative;
  z-index: 1;
  transition: all var(--transition-fast);
}

.page-btn:hover:not(:disabled) {
  border-color: var(--accent);
  transform: scale(1.05);
}

.page-btn:hover:not(:disabled)::before {
  opacity: 1;
}

.page-btn:hover:not(:disabled) svg {
  color: white;
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: #f1f5f9;
}

.page-info {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
  min-width: 120px;
  text-align: center;
}

/* Footer */
footer {
  margin-top: 5rem;
  padding: 3rem 0;
  background: linear-gradient(180deg, transparent 0%, rgba(99, 102, 241, 0.03) 100%);
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer-logo {
  font-family: var(--text-font);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.footer-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: all var(--transition-fast);
  transform: translateX(-50%);
}

.footer-nav a:hover {
  color: var(--accent);
}

.footer-nav a:hover::after {
  width: 60%;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  width: 100%;
  max-width: 400px;
}

.copyright {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: center;
}

/* Skip to Content Link (Accessibility) */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  z-index: 10000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}