:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: rgba(148, 163, 184, 0.28);
  --accent: #2563eb;
  --accent-soft: #dbeafe;

  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;

  --shadow-sm: 0 4px 10px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 12px 26px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 22px 45px rgba(15, 23, 42, 0.14), 0 8px 20px rgba(15, 23, 42, 0.07);

  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  position: relative;
}

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

.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(65px);
  opacity: 0.45;
}

.blob-1 {
  width: 360px;
  height: 360px;
  top: -80px;
  left: -70px;
  background: radial-gradient(circle at 30% 30%, #bfdbfe 0%, rgba(191, 219, 254, 0.06) 72%);
}

.blob-2 {
  width: 420px;
  height: 420px;
  top: 42%;
  right: -140px;
  background: radial-gradient(circle at 70% 50%, #dbeafe 0%, rgba(219, 234, 254, 0.03) 75%);
}

.grid-overlay {
  position: absolute;
  inset: 0;
  opacity: 0.26;
  background-image: linear-gradient(rgba(148, 163, 184, 0.11) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.11) 1px, transparent 1px);
  background-size: 48px 48px;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.section {
  padding: var(--space-16) 0;
  border-top: 1px solid rgba(148, 163, 184, 0.22);
}

.section:first-of-type {
  border-top: none;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.25rem, 6vw, 4rem);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.65rem, 4vw, 2.3rem);
  margin-bottom: var(--space-6);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-3);
}

p {
  margin-top: 0;
}

.section-intro,
.hero-subtitle {
  color: var(--muted);
  max-width: 62ch;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
}

.navbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) 0;
}

.logo {
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.nav-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text);
}

.hero {
  padding-top: var(--space-20);
}

.hero-layout {
  display: grid;
  gap: var(--space-8);
}

.hero-tag {
  display: inline-block;
  margin-bottom: var(--space-4);
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(37, 99, 235, 0.25);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.hero-image-card {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
}

.hero-image-wrap {
  border-radius: calc(var(--radius-lg) - 8px);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.hero-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-image-caption {
  margin: var(--space-4) 0 var(--space-2);
}

.btn {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 1.1rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

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

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.28);
}

.btn-primary:hover {
  box-shadow: 0 14px 24px rgba(37, 99, 235, 0.34);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
}

.btn-secondary:hover {
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.about-card,
.skills-card,
.contact-form,
.contact-info {
  padding: var(--space-8);
}

.about-card {
  display: grid;
  gap: var(--space-6);
}

.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  color: var(--accent);
  background: linear-gradient(145deg, #eff6ff, #dbeafe);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.filter-btn {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  font-weight: 600;
  padding: 0.45rem 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.filter-btn.active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.projects-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

.project-card {
  overflow: hidden;
}

.project-image-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.project-image-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.26), rgba(15, 23, 42, 0.04));
  opacity: 0;
  transition: opacity 0.2s ease;
}

.project-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.25s ease;
}

.project-card:hover .project-image-wrap img {
  transform: scale(1.05);
}

.project-card:hover .project-image-wrap::after {
  opacity: 1;
}

.project-content {
  padding: var(--space-6);
}

.badge {
  display: inline-block;
  padding: 0.22rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: 999px;
  border: 1px solid rgba(37, 99, 235, 0.25);
  background: var(--accent-soft);
  color: var(--accent);
}

.project-actions {
  margin-top: var(--space-5);
  display: flex;
  gap: var(--space-3);
}

.skills-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
}

.skills-list li {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  padding: 0.45rem 0.9rem;
  box-shadow: var(--shadow-sm);
}

.contact-grid {
  display: grid;
  gap: var(--space-6);
}

.contact-form {
  display: grid;
  gap: 0.55rem;
}

.contact-form label {
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font: inherit;
  background: #fff;
}

.form-message {
  min-height: 1.2rem;
  margin: 0.35rem 0 0.5rem;
  font-size: 0.92rem;
}

.footer {
  border-top: 1px solid var(--border);
  margin-top: var(--space-12);
}

.footer-content {
  color: var(--muted);
  font-size: 0.92rem;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: 1.1rem 0 2rem;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
}

@media (min-width: 720px) {
  .hero-layout {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .about-card {
    grid-template-columns: auto 1fr;
    align-items: center;
  }

  .projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-grid {
    grid-template-columns: 2fr 1fr;
  }

  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}