/* Simple personal blog website styling */
:root {
  --bg: #0f172a;
  --surface: #111827;
  --surface-alt: #1f2937;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.15), transparent 32%),
    linear-gradient(180deg, #020617 0%, #0e1726 100%);
}

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

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

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  padding: 4rem 0 3rem;
}

.header-inner {
  display: grid;
  gap: 2.5rem;
  align-items: center;
  grid-template-columns: 1.3fr 1fr;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 1rem;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.site-header h1 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 4rem);
  line-height: 1.05;
}

.lead {
  margin: 1.2rem 0 1.8rem;
  max-width: 42rem;
  color: var(--muted);
  line-height: 1.8;
}

.header-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  background: linear-gradient(135deg, #38bdf8, #0ea5e9);
  color: #0f172a;
  box-shadow: 0 18px 40px rgba(56, 189, 248, 0.22);
}

.btn.secondary {
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: var(--text);
}

.hero-visual {
  position: relative;
  overflow: hidden;
  min-height: 360px;
  border-radius: 32px;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.18), rgba(15, 23, 42, 0.95));
  border: 1px solid rgba(148, 163, 184, 0.12);
  box-shadow: var(--shadow);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.3), transparent 35%);
}

.hero-visual .hero-card {
  position: absolute;
  inset: 1.5rem;
  z-index: 1;
  display: grid;
  gap: 1rem;
}

.hero-card span {
  color: var(--accent);
  font-size: 0.95rem;
}

.hero-card h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.6rem);
  line-height: 1.1;
}

.hero-card p {
  margin: 0;
  color: #cbd5e1;
  max-width: 32rem;
  line-height: 1.8;
}

section {
  padding: 4rem 0;
}

.section-title {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.section-heading {
  margin: 0 0 1.5rem;
  font-size: clamp(2rem, 3vw, 2.8rem);
}

.about-grid,
.posts-grid {
  display: grid;
  gap: 1.5rem;
}

.about-grid {
  grid-template-columns: minmax(0, 1.2fr) 0.8fr;
}

.about-card,
.post-card,
.subscribe-card {
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 28px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.about-card p,
.post-card p,
.subscribe-card p,
.contact-card p {
  color: var(--muted);
}

.post-card {
  min-height: 230px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.post-card h3 {
  margin: 0 0 0.75rem;
}

.post-card .meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  color: #94a3b8;
  font-size: 0.95rem;
}

.post-card .read-more {
  margin-top: 1.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--accent);
  font-weight: 600;
}

.subscribe-card form {
  display: grid;
  gap: 1rem;
}

.subscribe-card input,
.contact-card input,
.contact-card textarea {
  width: 100%;
  padding: 1rem 1.1rem;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(15, 23, 42, 0.98);
  color: var(--text);
  outline: none;
}

.subscribe-card button,
.contact-card button {
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, #38bdf8, #0ea5e9);
  color: #0f172a;
  padding: 1rem 1.4rem;
  border-radius: 999px;
  font-weight: 700;
}

.contact-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 1.1fr) 0.9fr;
}

.footer {
  padding: 2rem 0;
  text-align: center;
  color: #64748b;
}

@media (max-width: 900px) {
  .header-inner,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 280px;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 3rem 0 2rem;
  }

  .btn {
    width: 100%;
  }

  .header-actions {
    flex-direction: column;
  }
}