:root {
  --bg-start: #f8fbff;
  --bg-end: #eef3ff;
  --glass: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.55);
  --text-primary: #1f2937;
  --text-muted: #546174;
  --accent: #3b82f6;
  --shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
  --radius: 20px;
}

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

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text-primary);
  background: linear-gradient(120deg, #f8fbff 0%, #edf3ff 40%, #fef6f2 100%);
  min-height: 100vh;
  line-height: 1.6;
  scroll-behavior: smooth;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -10%;
  z-index: -1;
  background:
    radial-gradient(circle at 20% 15%, rgba(99, 102, 241, 0.18), transparent 45%),
    radial-gradient(circle at 80% 10%, rgba(16, 185, 129, 0.14), transparent 40%),
    radial-gradient(circle at 15% 85%, rgba(59, 130, 246, 0.12), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(249, 115, 22, 0.12), transparent 50%);
}

body::after {
  filter: blur(18px);
  opacity: 0.7;
}

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

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

.section {
  padding: 96px 0;
}

.reveal-target {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-target.reveal {
  opacity: 1;
  transform: translateY(0);
}

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

.section-header {
  margin-bottom: 32px;
}

.section-header h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  margin-bottom: 8px;
}

.section-header p {
  color: var(--text-muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(248, 251, 255, 0.85);
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1100px, 90%);
  margin: 0 auto;
  padding: 18px 0;
}

.logo {
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.5px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 24px;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  gap: 6px;
  flex-direction: column;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 999px;
}

.hero {
  padding-top: 120px;
}

.hero-card {
  padding: 48px;
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  margin-bottom: 16px;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}

.button {
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--text-primary);
  color: white;
  font-weight: 500;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 24px rgba(31, 41, 55, 0.18);
}

.button.secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: rgba(31, 41, 55, 0.2);
  box-shadow: none;
}

.button:hover,
.button:focus {
  transform: translateY(-2px);
}

.grid {
  display: grid;
  gap: 24px;
}

.projects-card,
.about-card,
.contact-card,
.project-card,
.skill-chip {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.about-card,
.contact-card {
  padding: 36px;
}

.project-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 40px rgba(15, 23, 42, 0.12);
}

.project-card h3 {
  font-size: 1.25rem;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.project-links {
  display: flex;
  gap: 16px;
  font-size: 0.9rem;
}

.project-links a {
  color: var(--accent);
  font-weight: 500;
}

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skill-chip {
  padding: 10px 16px;
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: transform 0.2s ease, color 0.2s ease;
}

.skill-chip:hover {
  transform: translateY(-2px);
  color: var(--text-primary);
}

.contact-details {
  margin-top: 18px;
  display: grid;
  gap: 16px;
}

.contact-details a {
  color: var(--accent);
  font-weight: 500;
}

.footer {
  padding: 32px 0 48px;
  text-align: center;
  color: var(--text-muted);
}

@media (min-width: 768px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* .hero-card {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
    align-items: center;
  } */
}

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

@media (max-width: 820px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    right: 5%;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
    padding: 16px;
    border-radius: 16px;
    flex-direction: column;
    gap: 12px;
    display: none;
  }

  .nav-links.open {
    display: flex;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 72px 0;
  }

  .hero {
    padding-top: 96px;
  }

  .hero-card {
    padding: 32px;
  }
}