:root {
  --bg: #0f172a;
  --bg-alt: #0b1220;
  --surface: #111b2f;
  --surface-alt: rgba(255, 255, 255, 0.05);
  --accent: #38bdf8;
  --accent-strong: #0284c7;
  --text: #f8fafc;
  --text-secondary: rgba(248, 250, 252, 0.72);
  --muted: rgba(148, 163, 184, 0.65);
  --border: rgba(148, 163, 184, 0.2);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-soft: 0 20px 45px rgba(2, 8, 23, 0.45);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.12), transparent 55%),
    var(--bg);
  color: var(--text-secondary);
  line-height: 1.6;
}

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

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  color: var(--text);
  line-height: 1.2;
}

p {
  margin: 0;
}

.container {
  width: min(1100px, 90vw);
  margin: 0 auto;
}

.narrow {
  width: min(820px, 90vw);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(11, 18, 32, 0.82);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 0;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
  font-size: 1rem;
  text-transform: uppercase;
}

.site-nav ul {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.site-nav a {
  font-weight: 500;
  color: var(--muted);
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text);
  border-color: var(--accent);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0.25rem;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: transform 0.2s ease;
}

.hero {
  padding: 6rem 0 4rem;
}

.hero-grid {
  display: grid;
  gap: 4rem;
  align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.hero-copy h1 {
  font-size: clamp(2.5rem, 5vw, 3.6rem);
  margin-bottom: 1.2rem;
}

.hero-copy p {
  max-width: 520px;
}

.eyebrow {
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 1rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.cta-group {
  margin: 2.5rem 0 3rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.85rem 1.8rem;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease,
    color 0.2s ease;
}

.btn.primary {
  background: linear-gradient(130deg, var(--accent), var(--accent-strong));
  color: var(--bg);
  box-shadow: var(--shadow-soft);
}

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

.btn.ghost {
  border-color: rgba(56, 189, 248, 0.4);
  color: var(--text);
  background: rgba(56, 189, 248, 0.08);
}

.quick-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.quick-stats h3 {
  font-size: 2.5rem;
  color: var(--accent);
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
}

.hero-card {
  background: linear-gradient(155deg, rgba(56, 189, 248, 0.15), rgba(2, 132, 199, 0.1));
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: 0 18px 38px rgba(2, 8, 23, 0.35);
  border: 1px solid rgba(56, 189, 248, 0.25);
  position: relative;
  z-index: 2;
}

.hero-card__label {
  display: inline-flex;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid rgba(148, 163, 184, 0.35);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}

.hero-glow {
  position: absolute;
  inset: auto;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.3), transparent 70%);
  filter: blur(10px);
  z-index: 1;
}

.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.section-subtitle {
  max-width: 420px;
}

.feature-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.feature-card,
.skill-card,
.project-card,
.fact-card,
.timeline-item,
.project-detail,
.contact-note {
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 2rem;
  border: 1px solid rgba(148, 163, 184, 0.12);
  box-shadow: 0 10px 30px rgba(2, 8, 23, 0.25);
}

.feature-card h3 {
  margin-bottom: 1rem;
}

.project-preview-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.project-card__tag {
  display: inline-flex;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}

.project-card h3 {
  margin-bottom: 0.75rem;
}

.skill-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.skill-card h3 {
  margin-bottom: 1rem;
}

.skill-card ul li {
  padding: 0.35rem 0;
  color: var(--text-secondary);
}

.site-footer {
  padding: 4rem 0 2rem;
  background: rgba(10, 17, 28, 0.9);
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.footer-brand {
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.footer-title {
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  color: var(--muted);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
  padding: 0.4rem 0;
  border-radius: 6px;
}

.contact-link:hover {
  color: var(--accent);
}

.contact-icon {
  flex-shrink: 0;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.contact-link:hover .contact-icon {
  opacity: 1;
}

.footer-note {
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

.page-hero {
  padding: 6rem 0 3rem;
  position: relative;
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.18), transparent 60%);
  pointer-events: none;
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2.5rem;
}

.panel {
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.12);
  padding: 2.2rem;
  box-shadow: 0 14px 30px rgba(2, 8, 23, 0.28);
  display: grid;
  gap: 1.2rem;
}

.fact-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.timeline {
  display: grid;
  gap: 1.5rem;
}

.timeline-item {
  border-left: 3px solid rgba(56, 189, 248, 0.4);
  padding: 1.5rem 1.5rem 1.5rem 2rem;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 1.5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.15);
}

.timeline-year {
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.project-list {
  display: grid;
  gap: 2rem;
}

.project-detail__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.project-detail__tag {
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.7rem;
  color: var(--muted);
}

.project-detail__stack {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.project-detail__stack li {
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent);
  font-size: 0.85rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}

.contact-info {
  display: grid;
  gap: 1.5rem;
}

.contact-info ul li {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.contact-info span {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-form form {
  display: grid;
  gap: 1.3rem;
}

.form-group {
  display: grid;
  gap: 0.6rem;
}

label {
  font-weight: 600;
  color: var(--text);
}

input,
select,
textarea {
  background: rgba(15, 23, 42, 0.78);
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--text);
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

textarea {
  resize: vertical;
  min-height: 160px;
}

.contact-note h3 {
  margin-bottom: 0.6rem;
}

/* Blog Styles */
.blog-filters {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.filter-btn {
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.2);
  color: var(--text-secondary);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover,
.filter-btn.active {
  background: rgba(56, 189, 248, 0.2);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.blog-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.blog-card {
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 2rem;
  border: 1px solid rgba(148, 163, 184, 0.12);
  box-shadow: 0 10px 30px rgba(2, 8, 23, 0.25);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.blog-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(2, 8, 23, 0.35);
}

.blog-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.blog-card__date {
  font-size: 0.85rem;
  color: var(--muted);
}

.blog-card__category {
  display: inline-flex;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.blog-card h2 {
  margin-bottom: 1rem;
  font-size: 1.4rem;
  line-height: 1.3;
}

.blog-card h2 a {
  color: var(--text);
  transition: color 0.2s ease;
}

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

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

.blog-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.blog-card__read-time {
  font-size: 0.85rem;
  color: var(--muted);
}

.blog-card__link {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.blog-card__link:hover {
  color: var(--text);
}

/* Blog Post Styles */
.blog-post {
  max-width: 800px;
  margin: 0 auto;
}

.blog-post__header {
  text-align: center;
  margin-bottom: 3rem;
}

.blog-post__title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.blog-post__meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.blog-post__date,
.blog-post__category,
.blog-post__read-time {
  font-size: 0.9rem;
  color: var(--muted);
}

.blog-post__content {
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 3rem;
  border: 1px solid rgba(148, 163, 184, 0.12);
  box-shadow: 0 10px 30px rgba(2, 8, 23, 0.25);
}

.blog-post__content h2 {
  font-size: 1.8rem;
  margin: 2.5rem 0 1rem;
  color: var(--text);
}

.blog-post__content h3 {
  font-size: 1.4rem;
  margin: 2rem 0 1rem;
  color: var(--text);
}

.blog-post__content p {
  margin-bottom: 1.5rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.blog-post__content ul,
.blog-post__content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.blog-post__content li {
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.blog-post__content blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--text-secondary);
}

.blog-post__content code {
  background: rgba(56, 189, 248, 0.1);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
}

.blog-post__content pre {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  margin: 2rem 0;
  overflow-x: auto;
}

.blog-post__content pre code {
  background: none;
  padding: 0;
}

.blog-post__navigation {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.blog-post__nav-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.blog-post__nav-link:hover {
  color: var(--text);
}

.blog-post__nav-prev {
  text-align: left;
}

.blog-post__nav-next {
  text-align: right;
}

.site-nav.open {
  max-height: 360px;
  opacity: 1;
  visibility: visible;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
  }

  .site-nav {
    position: absolute;
    inset: 100% 0 auto;
    background: rgba(11, 18, 32, 0.98);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
  }

  .site-nav ul {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .hero {
    padding-top: 5rem;
  }

  .quick-stats {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }

  .section-header {
    align-items: flex-start;
  }

  .project-detail__header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 580px) {
  .hero-card {
    padding: 2rem;
  }

  .cta-group {
    flex-direction: column;
  }
}