@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-soft: #eef2ff;
  --accent: #f59e0b;
  --text-main: #0f172a;
  --text-sub: #64748b;
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --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);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--text-main);
  background: var(--bg-body);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

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

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.logo {
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.logo:hover {
  transform: scale(1.02);
}

.logo img {
  height: 48px;
  width: auto;
}

.main-nav {
  display: flex;
  gap: 32px;
}

.main-nav a {
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  color: var(--text-sub);
  transition: var(--transition);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--primary);
  transition: var(--transition);
}

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

.main-nav a:hover::after {
  width: 100%;
}

.header-right {
  display: none; /* Hide for cleaner look on desktop */
}

/* HERO */
.hero {
  padding: 80px 0;
  background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--primary-soft) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-text {
  max-width: 540px;
}

.pill {
  display: inline-block;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: 48px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 18px;
  margin-bottom: 32px;
  color: var(--text-sub);
  line-height: 1.6;
}

.cta-group {
  display: flex;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(79, 70, 229, 0.4);
}

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

.btn-secondary:hover {
  background: var(--bg-body);
  transform: translateY(-2px);
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  transition: var(--transition);
}

.hero-image img:hover {
  transform: translateY(-5px) scale(1.01);
}

/* POSTS GRID */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-title p {
  color: var(--text-sub);
  font-size: 16px;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.post-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-soft);
}

.post-thumb {
  position: relative;
  display: block;
  overflow: hidden;
}

.post-thumb img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: var(--transition);
}

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

.post-body {
  padding: 24px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.post-title {
  display: block;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
  text-decoration: none;
  transition: var(--transition);
  line-height: 1.4;
}

.post-title:hover {
  color: var(--primary);
}

.post-meta {
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.post-excerpt {
  color: var(--text-sub);
  font-size: 14px;
  margin-bottom: 24px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.post-link:hover {
  gap: 8px;
}

/* FOOTER */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 60px 0 30px;
  text-align: center;
}

.footer-inner p {
  margin: 0;
  font-size: 14px;
}

/* ARTICLE CONTENT */
.article {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px;
}

.article h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.2;
}

.article-image {
  margin: 40px 0;
}

.image-caption {
  font-size: 14px;
  color: var(--text-sub);
  margin-top: 12px;
  text-align: center;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .posts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-text {
    margin: 0 auto;
  }
  .cta-group {
    justify-content: center;
  }
  .hero h1 {
    font-size: 36px;
  }
}

@media (max-width: 640px) {
  .posts-grid {
    grid-template-columns: 1fr;
  }
  .main-nav {
    display: none;
  }
}