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

body {
  margin: 0;
  font-family: "Roboto", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #020617;
  color: #e5e7eb;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(15, 23, 42, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo a {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.03em;
  color: #e5e7eb;
}

.main-nav {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
}

.main-nav a {
  color: #cbd5f5;
  padding: 6px 10px;
  border-radius: 999px;
  transition: background 0.15s ease, color 0.15s ease;
}

.main-nav a:hover {
  background: rgba(129, 140, 248, 0.16);
  color: #f9fafb;
}

.page-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 24px;
  margin-bottom: 32px;
  align-items: center;
}

.hero-it {
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 55%),
              radial-gradient(circle at bottom right, rgba(129, 140, 248, 0.3), transparent 60%);
  border-radius: 24px;
  padding: 26px 26px;
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.hero-content h1 {
  margin: 0 0 10px;
  font-size: 2rem;
}

.hero-content p {
  margin: 0 0 18px;
  color: #cbd5f5;
  max-width: 520px;
}

.hero-illustration {
  display: flex;
  justify-content: flex-end;
}

.hero-card {
  background: rgba(15, 23, 42, 0.9);
  border-radius: 18px;
  padding: 18px 18px 20px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.7);
  max-width: 320px;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.hero-pill {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  background: rgba(56, 189, 248, 0.1);
  color: #e0f2fe;
  margin-bottom: 10px;
}

.hero-card h2 {
  margin: 0 0 6px;
  font-size: 1.2rem;
}

.hero-card p {
  margin: 0;
  font-size: 0.9rem;
  color: #cbd5f5;
}

/* Sections */
.section {
  margin-bottom: 32px;
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}

.section-header h2 {
  margin: 0;
  font-size: 1.4rem;
}

.section-header p {
  margin: 0;
  color: #9ca3af;
  max-width: 520px;
}

.section-narrow {
  max-width: 780px;
}

/* Posts grid */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.post-card {
  display: flex;
  gap: 14px;
  padding: 14px 14px 16px;
  background: radial-gradient(circle at top left, rgba(129, 140, 248, 0.08), rgba(15, 23, 42, 1));
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.7);
}

.post-card-image {
  flex: 0 0 110px;
  display: flex;
  align-items: stretch;
}

.post-card-image img {
  width: 100%;
  height: 100%;
  border-radius: 14px;
  object-fit: cover;
}

.post-card-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.post-card-title {
  margin: 0;
  font-size: 1.02rem;
}

.post-excerpt {
  margin: 0;
  font-size: 0.9rem;
  color: #9ca3af;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 7px 14px;
  cursor: pointer;
  text-decoration: none;
  margin-top: 4px;
}

.btn-primary {
  background: linear-gradient(135deg, #38bdf8, #6366f1);
  color: #0b1120;
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-secondary {
  background: rgba(15, 23, 42, 0.9);
  color: #e5e7eb;
  border: 1px solid rgba(148, 163, 184, 0.7);
}

.btn-secondary:hover {
  background: rgba(30, 64, 175, 0.9);
}

/* Article */
.article {
  max-width: 780px;
}

.article-header h1 {
  margin-top: 0;
  margin-bottom: 10px;
}

.article-cover {
  margin: 16px 0 20px;
}

.article-cover img {
  width: 100%;
  border-radius: 20px;
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.article-content p {
  line-height: 1.7;
  margin-bottom: 14px;
  color: #e5e7eb;
}

.article-content h2 {
  margin-top: 22px;
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.article-content ul {
  padding-left: 20px;
  margin-bottom: 14px;
}

.article-content li {
  margin-bottom: 4px;
}

.article-image-inline {
  margin: 20px 0 6px;
}

.article-image-inline img {
  max-width: 100%;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.4);
}

/* Contact page */
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
  gap: 20px;
}

.contact-card,
.info-card {
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.18), rgba(15, 23, 42, 1));
  border-radius: 20px;
  padding: 18px 18px 20px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.8);
}

.contact-card h1 {
  margin-top: 0;
  margin-bottom: 8px;
}

.form-group {
  margin-bottom: 12px;
}

label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 4px;
  color: #e5e7eb;
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(15, 23, 42, 0.9);
  color: #e5e7eb;
  font-size: 0.9rem;
  font-family: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: #38bdf8;
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.4);
}

.contact-list {
  list-style: none;
  padding-left: 0;
  margin: 10px 0 0;
}

.contact-list li {
  margin-bottom: 6px;
}

.contact-list a {
  color: #bfdbfe;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.3);
  padding: 18px 16px 22px;
  background: #020617;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  font-size: 0.85rem;
  color: #9ca3af;
}

/* Responsive */
@media (max-width: 880px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero-illustration {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .main-nav {
    flex-wrap: wrap;
  }
  .posts-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .post-card {
    flex-direction: row;
  }
  .contact-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 520px) {
  .post-card {
    flex-direction: column;
  }
  .post-card-image {
    flex-basis: auto;
  }
}