/* Design System & Premium Stylesheet for Cloudflare Stack MVP */

:root {
  --bg-main: #090d16;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(31, 41, 55, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #6366f1;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --accent-glow: rgba(99, 102, 241, 0.15);
  
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* Background Glowing Orbs */
body::before, body::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
  z-index: -1;
  pointer-events: none;
}
body::before { top: 5%; left: 10%; }
body::after { bottom: 10%; right: 10%; }

/* Navigation Bar */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(9, 13, 22, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

nav .nav-brand {
  font-weight: 700;
  font-size: 1.25rem;
  background: linear-gradient(to right, #6366f1, #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

nav .nav-links {
  display: flex;
  gap: 1.5rem;
}

nav .nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

nav .nav-links a:hover, nav .nav-links a.active {
  color: var(--text-primary);
  text-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

/* Hero Section */
.hero {
  padding: 4rem 2rem 2.5rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: linear-gradient(to right, #ffffff, #9ca3af);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

/* Search Bar */
.search-container {
  position: relative;
  max-width: 500px;
  margin: 0 auto;
}

.search-input {
  width: 100%;
  padding: 0.85rem 1.25rem 0.85rem 3rem;
  background-color: rgba(17, 24, 39, 0.8);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  outline: none;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 15px var(--accent-glow);
}

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

/* Main Container */
main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
}

.section-title {
  font-size: 1.5rem;
  margin: 2rem 0 1rem;
  border-left: 4px solid var(--border-focus);
  padding-left: 0.75rem;
}

/* Articles Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

/* Article Card */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
  text-decoration: none;
  color: inherit;
  height: 100%;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 10px 20px -10px rgba(0, 0, 0, 0.5), 0 0 15px var(--accent-glow);
  background-color: var(--bg-card-hover);
}

.card-img-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
  overflow: hidden;
  background-color: #111827;
}

.card-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.card:hover .card-img {
  transform: scale(1.05);
}

.card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  margin-bottom: 0.75rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.card-footer {
  font-size: 0.8rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
  display: flex;
  justify-content: space-between;
}

/* Detailed Article View */
.article-header {
  max-width: 800px;
  margin: 3rem auto 2rem;
  text-align: center;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 1rem;
  align-items: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.article-hero-img-wrapper {
  max-width: 900px;
  margin: 0 auto 3rem;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.article-hero-img {
  width: 100%;
  height: auto;
  display: block;
}

.article-body {
  max-width: 740px;
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 1.8;
  color: #d1d5db;
}

.article-body h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 2rem 0 1rem;
  color: var(--text-primary);
}

.article-body h3 {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 1.5rem 0 0.75rem;
  color: var(--text-primary);
}

.article-body p {
  margin-bottom: 1.5rem;
}

.article-body blockquote {
  border-left: 4px solid var(--border-focus);
  padding-left: 1.25rem;
  font-style: italic;
  color: var(--text-secondary);
  margin: 2rem 0;
}

.article-body code {
  background-color: rgba(31, 41, 55, 0.6);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: monospace;
}

.article-body pre {
  background-color: rgba(17, 24, 39, 0.8);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.article-body pre code {
  background-color: transparent;
  padding: 0;
}

.article-body ul, .article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

/* Forms & Admin Panel */
.form-container {
  max-width: 650px;
  margin: 2rem auto;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: rgba(9, 13, 22, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-smooth);
}

.form-control:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 10px var(--accent-glow);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition-smooth);
  text-decoration: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(to right, #6366f1, #8b5cf6);
  color: #ffffff;
}

.btn-primary:hover {
  background: linear-gradient(to right, #4f46e5, #7c3aed);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

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

/* Toast/Alert */
.alert {
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.alert-error {
  background-color: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: auto;
  background-color: rgba(9, 13, 22, 0.4);
}

/* Utility classes */
.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.text-center {
  text-align: center;
}

.badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
}

/* Responsive tweaks */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.25rem; }
  nav { padding: 1rem; }
  .grid { grid-template-columns: 1fr; }
}