/* blog.css */

:root {
  --bg-color: #0F1319;
  --bg-accent: #161C24;
  --card-bg: rgba(22, 28, 36, 0.45);
  --primary: #5C82FF;
  --primary-rgb: 92, 130, 255;
  --primary-glow: rgba(92, 130, 255, 0.08);
  --primary-gradient: linear-gradient(135deg, #5C82FF 0%, #7092FF 100%);
  --accent: #E2E8F0;
  --glass-border: #1E293B;
  --glass-border-hover: rgba(92, 130, 255, 0.25);
  --text-main: #E2E8F0;
  --text-dim: #718096;
  --text-muted: #718096;
  --error: #EF4444;
  --success: #22C55E;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --glass-shadow: 0 16px 48px -12px rgba(0, 0, 0, 0.45);
}

:root[data-theme="light"] {
  --bg-color: #F4F5F7;
  --bg-accent: #FFFFFF;
  --card-bg: rgba(255, 255, 255, 0.7);
  --primary: #3B66F5;
  --primary-rgb: 59, 102, 245;
  --primary-glow: rgba(59, 102, 245, 0.05);
  --primary-gradient: linear-gradient(135deg, #3B66F5 0%, #2A54DB 100%);
  --accent: #1E2530;
  --glass-border: #E2E8F0;
  --glass-border-hover: rgba(59, 102, 245, 0.35);
  --text-main: #1E2530;
  --text-dim: #626D7F;
  --text-muted: #626D7F;
  --error: #A82A2A;
  --success: #107C41;
  --glass-shadow: 0 8px 32px rgba(145, 158, 171, 0.08);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Manrope', sans-serif;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text-main);
}

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

.article-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.blog-header {
  border-bottom: 1px solid var(--glass-border);
  background: rgba(var(--primary-rgb), 0.02);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  text-decoration: none;
  background: linear-gradient(135deg, var(--text-main) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo::before {
  content: '';
  width: 10px;
  height: 10px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--primary);
}

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

.btn-nav {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dim);
  transition: var(--transition);
}

.btn-nav:hover {
  color: var(--primary);
}

.btn-cta {
  background: var(--primary-gradient);
  color: #fff;
  padding: 0.5rem 1.25rem;
  border-radius: 10px;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(var(--primary-rgb), 0.2);
}

.btn-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.3);
  color: #fff;
}

/* Blog Hero */
.blog-hero {
  padding: 4rem 0 3rem 0;
  text-align: center;
}

.blog-hero h1 {
  font-size: 2.8rem;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.blog-hero p {
  font-size: 1.2rem;
  color: var(--text-dim);
  max-width: 600px;
  margin: 0 auto;
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
  margin-bottom: 5rem;
}

.blog-card {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--glass-shadow);
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--glass-border-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.card-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(var(--primary-rgb), 0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.blog-card h2 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
  transition: var(--transition);
}

.blog-card:hover h2 {
  color: var(--primary);
}

.blog-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1rem;
}

/* Article Styling */
.article-header {
  padding: 3rem 0;
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 2.5rem;
}

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

.article-header h1 {
  font-size: 2.6rem;
  line-height: 1.25;
  margin-bottom: 1.5rem;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-dim);
}

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

.article-body h2 {
  font-size: 1.75rem;
  margin-top: 2.5rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 0.5rem;
}

.article-body h3 {
  font-size: 1.35rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.article-body ul, .article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.75rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

/* Callout Box */
.callout {
  background: rgba(var(--primary-rgb), 0.04);
  border-left: 4px solid var(--primary);
  border-radius: 0 16px 16px 0;
  padding: 1.5rem;
  margin: 2rem 0;
}

.callout-title {
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.callout p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* Table styling */
.article-table-container {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  text-align: left;
}

.article-body th {
  background: rgba(var(--primary-rgb), 0.05);
  padding: 0.75rem 1rem;
  font-weight: 700;
  color: var(--text-main);
  border-bottom: 2px solid var(--glass-border);
}

.article-body td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--glass-border);
  color: var(--text-dim);
}

.article-body tr:last-child td {
  border-bottom: none;
}

/* Article CTA Block */
.article-cta-block {
  background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.1) 0%, rgba(var(--primary-rgb), 0.02) 100%);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 2.5rem;
  text-align: center;
  margin: 3.5rem 0;
  box-shadow: var(--glass-shadow);
}

.article-cta-block h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.article-cta-block p {
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
}

.article-cta-block .btn-cta {
  display: inline-block;
  padding: 0.8rem 2rem;
  font-size: 1rem;
}

/* Back Link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
  margin-bottom: 2rem;
  font-size: 0.95rem;
  transition: var(--transition);
}

.back-link:hover {
  opacity: 0.8;
  transform: translateX(-2px);
}

/* Footer */
footer {
  border-top: 1px solid var(--glass-border);
  padding: 3rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 5rem;
}

footer p {
  margin-bottom: 0.5rem;
}

footer a {
  color: var(--text-dim);
  text-decoration: none;
  margin: 0 0.5rem;
  transition: var(--transition);
}

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

/* Mobile responsive */
@media (max-width: 768px) {
  .blog-hero h1 {
    font-size: 2.2rem;
  }
  .article-header h1 {
    font-size: 2rem;
  }
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .article-cta-block {
    padding: 1.75rem;
  }
}