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

:root {
  --bg: #000;
  --bg-2: #0a0a0a;
  --surface: #1c1c1e;
  --surface-2: #2c2c2e;
  --border: rgba(255,255,255,0.08);
  --text: #f5f5f7;
  --text-2: #a1a1a6;
  --text-3: #6e6e73;
  --accent: #0071e3;
  --accent-h: #0077ed;
  --radius: 18px;
  --radius-sm: 10px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(0,0,0,0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.3px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.menu-btn span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.3s;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 12px 24px 16px;
  gap: 4px;
  border-top: 1px solid var(--border);
}
.mobile-menu a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 15px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}
.mobile-menu a:hover { color: var(--text); }
.mobile-menu.open { display: flex; }

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0,113,227,0.18) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(120,0,220,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 40% 30% at 10% 70%, rgba(0,200,150,0.07) 0%, transparent 60%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
  padding: 0 24px;
  margin-top: 52px;
}

.hero-eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(52px, 8vw, 96px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  background: linear-gradient(180deg, #fff 0%, #888 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 19px;
  color: var(--text-2);
  max-width: 480px;
  margin: 0 auto 40px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-3);
  font-size: 11px;
  letter-spacing: 0.5px;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--text-3), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%,100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-h); transform: scale(1.02); }
.btn-ghost {
  background: rgba(255,255,255,0.1);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: rgba(255,255,255,0.16); }
.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  background: rgba(255,255,255,0.08);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-sm:hover { background: rgba(255,255,255,0.14); }
.btn-large { padding: 16px 40px; font-size: 17px; }

/* ── Container / Section Header ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section-header { margin-bottom: 48px; }
.section-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
}
.section-header h2, .about-text h2, .contact-inner h2 {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -1px;
}

/* ── Featured Posts ── */
.featured {
  padding: 100px 0;
  background: var(--bg-2);
}

.featured-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 20px;
}

.post-side { display: flex; flex-direction: column; gap: 20px; }

.post-card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.3s, box-shadow 0.3s;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.6);
}

.post-card--large .post-card-img { height: 260px; }
.post-card-img {
  height: 160px;
  position: relative;
  display: flex;
  align-items: flex-start;
  padding: 16px;
}

.post-tag {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 980px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.post-card-body { padding: 20px 24px 24px; }
.post-card-body time { font-size: 12px; color: var(--text-3); }
.post-card-body h3 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin: 8px 0 10px;
  line-height: 1.35;
}
.post-card-body p { font-size: 14px; color: var(--text-2); line-height: 1.6; margin-bottom: 16px; }
.read-more { font-size: 14px; color: var(--accent); text-decoration: none; font-weight: 500; }
.read-more:hover { text-decoration: underline; }

/* ── Posts Grid ── */
.posts-grid-section { padding: 100px 0; }

.tags-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.tag-btn {
  padding: 7px 18px;
  border-radius: 980px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}
.tag-btn:hover { background: rgba(255,255,255,0.08); color: var(--text); }
.tag-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.3s, box-shadow 0.3s, opacity 0.3s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}
.card.hidden { display: none; }

.card-img { height: 140px; }
.card-body { padding: 18px 20px 22px; }
.card-tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}
.card-body h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 8px 0 8px;
  letter-spacing: -0.2px;
  line-height: 1.4;
}
.card-body p { font-size: 13px; color: var(--text-2); line-height: 1.6; margin-bottom: 14px; }
.card-meta {
  display: flex;
  gap: 12px;
  font-size: 12px;
  color: var(--text-3);
}

/* ── About ── */
.about {
  padding: 100px 0;
  background: var(--bg-2);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 80px;
  align-items: center;
}

.about-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.avatar-wrap { position: relative; }
.avatar {
  width: 160px; height: 160px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0071e3, #5e5ce6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -1px;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.1), 0 20px 60px rgba(0,113,227,0.3);
}

.stats {
  display: flex;
  gap: 32px;
  text-align: center;
}
.stat-num {
  display: block;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #fff, #888);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 13px; color: var(--text-3); }

.about-text .section-label { margin-bottom: 10px; }
.about-text h2 { margin-bottom: 20px; }
.about-desc { font-size: 16px; color: var(--text-2); line-height: 1.7; margin-bottom: 16px; }

.skills { margin-top: 32px; display: flex; flex-direction: column; gap: 16px; }
.skill-header {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 6px;
}
.skill-bar {
  height: 4px;
  background: var(--surface-2);
  border-radius: 2px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #5e5ce6);
  border-radius: 2px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4,0,0.2,1);
}

/* ── Projects ── */
.projects { padding: 100px 0; }

.projects-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 20px;
}

.project-card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.3s, box-shadow 0.3s;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}

.project-visual {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.project-card--featured .project-visual { height: 240px; }

.project-icon { font-size: 48px; }

.project-mockup {
  width: 70%;
  background: rgba(255,255,255,0.06);
  border-radius: 8px;
  padding: 12px;
  border: 1px solid rgba(255,255,255,0.1);
}
.mockup-bar {
  height: 8px;
  background: rgba(255,255,255,0.15);
  border-radius: 4px;
  margin-bottom: 10px;
}
.mockup-lines { display: flex; flex-direction: column; gap: 6px; }
.mockup-line {
  height: 6px;
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
}
.mockup-line.short { width: 60%; }

.project-info { padding: 20px 22px 24px; }
.project-tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}
.project-info h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 8px 0 10px;
  letter-spacing: -0.3px;
}
.project-info p { font-size: 13px; color: var(--text-2); line-height: 1.6; margin-bottom: 14px; }
.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.project-tech span {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 980px;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  color: var(--text-2);
}

/* ── Contact ── */
.contact {
  padding: 120px 0;
  background: var(--bg-2);
  text-align: center;
}
.contact-inner { max-width: 600px; margin: 0 auto; }
.contact-inner .section-label { margin-bottom: 10px; }
.contact-inner h2 { margin-bottom: 16px; }
.contact-desc { font-size: 17px; color: var(--text-2); margin-bottom: 40px; line-height: 1.6; }

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 40px;
  align-items: center;
}
.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-2);
  text-decoration: none;
  font-size: 15px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  width: 100%;
  max-width: 360px;
  transition: all 0.2s;
}
.contact-link:hover { background: var(--surface-2); color: var(--text); border-color: rgba(255,255,255,0.15); }
.contact-icon { font-size: 18px; width: 24px; text-align: center; }

/* ── Footer ── */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-logo { font-size: 16px; font-weight: 600; }
.footer-copy { font-size: 13px; color: var(--text-3); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 13px; color: var(--text-3); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--text); }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .project-card--featured { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .featured-grid { grid-template-columns: 1fr; }
  .post-card--large .post-card-img { height: 200px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { flex-direction: row; justify-content: center; flex-wrap: wrap; gap: 24px; }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .project-card--featured { grid-column: 1 / -1; }
  .stats { gap: 20px; }
  .featured { padding: 64px 0; }
  .posts-grid-section { padding: 64px 0; }
  .about { padding: 64px 0; }
  .projects { padding: 64px 0; }
  .contact { padding: 80px 0; }
}

@media (max-width: 600px) {
  .nav-links { display: none; }
  .menu-btn { display: flex; }
  .hero-sub { font-size: 16px; }
  .hero-title { letter-spacing: -1px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; max-width: 280px; justify-content: center; }
  .grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .project-card--featured { grid-column: auto; }
  .about-visual { flex-direction: column; align-items: center; }
  .stats { gap: 28px; }
  .stat-num { font-size: 28px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
  .section-header { margin-bottom: 32px; }
  .tags-filter { gap: 8px; }
  .container { padding: 0 16px; }
  .featured { padding: 48px 0; }
  .posts-grid-section { padding: 48px 0; }
  .about { padding: 48px 0; }
  .projects { padding: 48px 0; }
  .contact { padding: 60px 0; }
  .contact-link { max-width: 100%; }
}