:root {
  --bg: #07090f;
  --bg-alt: #0b1018;
  --card: rgba(15, 22, 35, 0.86);
  --line: rgba(0, 255, 200, 0.16);
  --text: #eef6ff;
  --muted: #9ca8b8;
  --primary: #00ffc8;
  --primary-2: #4df3ff;
  --shadow: 0 0 30px rgba(0, 255, 200, 0.08);
  --radius: 18px;
  --radius-sm: 12px;
  --container: 1120px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at top, rgba(0, 255, 200, 0.08), transparent 30%),
    linear-gradient(180deg, #05070c 0%, #081019 100%);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

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

.container {
  width: min(92%, var(--container));
  margin: 0 auto;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: -1;
}

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(14px);
  background: rgba(5, 8, 13, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--primary);
  text-shadow: 0 0 18px rgba(0, 255, 200, 0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-links a {
  color: var(--muted);
  transition: var(--transition);
}

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

.nav-cta {
  padding: 10px 16px;
  border: 1px solid rgba(0, 255, 200, 0.3);
  border-radius: 999px;
  color: var(--primary) !important;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
}

.hero {
  padding: 110px 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-content {
  max-width: 850px;
}

.tag,
.section-tag {
  display: inline-block;
  color: var(--primary);
  font-size: 0.85rem;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5.3rem);
  line-height: 1;
  margin-bottom: 14px;
  text-shadow: 0 0 30px rgba(0, 255, 200, 0.12);
}

.hero h2 {
  font-size: clamp(1.1rem, 3vw, 1.7rem);
  color: var(--primary-2);
  margin-bottom: 18px;
  font-weight: 600;
}

.hero-text {
  color: var(--muted);
  max-width: 700px;
  font-size: 1.05rem;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  cursor: pointer;
  border: none;
}

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

.btn-primary {
  background: linear-gradient(90deg, #00ffc8, #4df3ff);
  color: #000;
  font-weight: bold;
  box-shadow: 0 0 25px rgba(0,255,200,0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.12);
}

.hero-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 44px;
}

.mini-card,
.card,
.skill-card,
.service-card,
.social-card,
.contact-box {
  background: var(--card);
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: var(--shadow);
}

.mini-card {
  border-radius: var(--radius-sm);
  padding: 18px;
}

.mini-title {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 6px;
}

.section {
  padding: 90px 0;
}

.alt {
  background: rgba(255,255,255,0.015);
}

.section-header {
  margin-bottom: 34px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
}

.about-grid,
.contact-box {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 22px;
}

.card {
  padding: 26px;
  border-radius: var(--radius);
}

.card p + p {
  margin-top: 14px;
}

.info-list {
  list-style: none;
}

.info-list li + li {
  margin-top: 12px;
}

.skills-grid,
.services-grid,
.social-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.skill-card,
.service-card,
.social-card {
  padding: 24px;
  border-radius: var(--radius);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.skill-card:hover,
.service-card:hover,
.social-card:hover,
.card:hover,
.mini-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 255, 200, 0.22);
  box-shadow: 0 0 30px rgba(0, 255, 200, 0.12);
}

.skill-card h3,
.service-card h3,
.social-card h3 {
  margin-bottom: 10px;
}

.skill-card p,
.service-card p,
.social-card p,
.card p,
.contact-info p {
  color: var(--muted);
}

.center-box {
  margin-top: 28px;
  text-align: center;
}

.contact-box {
  border-radius: 24px;
  padding: 28px;
}

.contact-info h2 {
  margin-bottom: 14px;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}

.contact-details {
  margin-top: 18px;
}

.contact-form {
  display: grid;
  gap: 14px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  background: rgba(255,255,255,0.03);
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 14px;
  padding: 14px 16px;
  outline: none;
  font-size: 1rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(0, 255, 200, 0.4);
  box-shadow: 0 0 0 3px rgba(0, 255, 200, 0.08);
}

.footer {
  padding: 26px 0 40px;
  text-align: center;
  color: var(--muted);
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 52px;
  height: 52px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--primary), var(--primary-2));
  color: #061018;
  font-size: 1.3rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 0 22px rgba(0,255,200,0.2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 1100;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: 0.7s ease;
}

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

@media (max-width: 900px) {
  .hero-cards,
  .skills-grid,
  .services-grid,
  .social-grid,
  .about-grid,
  .contact-box {
    grid-template-columns: 1fr;
  }

  .nav-links {
    position: absolute;
    top: 76px;
    right: 4%;
    width: min(280px, 92%);
    background: rgba(8, 12, 20, 0.96);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 14px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
  }

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

  .menu-toggle {
    display: inline-block;
  }
}

@media (max-width: 600px) {
  .hero {
    padding-top: 90px;
  }

  .section {
    padding: 75px 0;
  }

  .btn {
    width: 100%;
  }

  .hero-buttons {
    flex-direction: column;
  }
}
.btn-primary:hover {
  box-shadow: 0 0 40px rgba(0,255,200,0.6);
  transform: scale(1.05);
}