:root {
  --primary: #00bbf9;
  --secondary: #f15bb5;
  --bg-top: #1a1e23;
  --bg-bottom: #050607;
  --text: #ffffff;
  --muted: #bfbfbf;
  --shadow-light: rgba(0, 187, 249, 0.1);
  --shadow-medium: rgba(0, 0, 0, 0.2);
  --shadow-heavy: rgba(0, 0, 0, 0.4);
  --border-radius: 12px;
  --transition-fast: 0.15s ease;
  --transition-medium: 0.25s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html,
body {
  height: 100%;
}

/* Skip navigation for accessibility */
.skip-nav {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary);
  color: var(--bg-top);
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 600;
  z-index: 1000;
  transition: top var(--transition-fast);
}
.skip-nav:focus {
  top: 6px;
}
body {
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 40px;
  width: 100%;
  min-height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
  gap: 32px;
  text-align: center;
  animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.profile-pic {
  width: clamp(160px, 20vw, 320px);
  height: clamp(160px, 20vw, 320px);
  border-radius: 999px;
  object-fit: cover;
  border: 4px solid var(--primary);
  background-color: transparent;
  transition: all var(--transition-medium);
  box-shadow: 0 4px 20px var(--shadow-light);
}

.profile-pic:hover {
  transform: scale(1.05);
  border-color: var(--secondary);
  box-shadow: 0 8px 30px rgba(241, 91, 181, 0.2);
}

h1 {
  color: var(--primary);
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.1;
  text-align: center;
  margin-bottom: 8px;
}
h2 {
  color: var(--muted);
  font-size: clamp(1.2rem, 2.8vw, 1.8rem);
  font-weight: 500;
  text-align: center;
  margin-bottom: 16px;
}
p {
  color: rgba(255, 255, 255, 0.92);
  max-width: 75ch;
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  line-height: 1.6;
}

.buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 16px 32px;
  border-radius: var(--border-radius);
  border: 2px solid var(--primary);
  background: transparent;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--primary);
  color: #0b0d0e;
  border-color: var(--primary);
  box-shadow: 0 4px 15px rgba(0, 187, 249, 0.3);
}

.btn:hover,
.btn:focus {
  background: var(--secondary);
  border-color: var(--secondary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(241, 91, 181, 0.4);
}

.btn:focus-visible {
  outline: 3px solid rgba(0, 187, 249, 0.5);
  outline-offset: 2px;
}

.btn:active {
  transform: translateY(0);
}

.icons {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: center;
  margin-top: 16px;
}

.icons a {
  color: var(--text);
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  transition: all var(--transition-medium);
  text-decoration: none;
  position: relative;
}

.icons a::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: scale(0);
  transition: transform var(--transition-medium);
}

.icons a:hover::before,
.icons a:focus::before {
  transform: scale(1);
}

.icons a:hover,
.icons a:focus {
  color: var(--secondary);
  transform: translateY(-3px);
}

.icons a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 4px;
}

footer {
  width: 100%;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.25));
  padding: 16px 0;
  text-align: center;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

footer a:hover,
footer a:focus {
  color: var(--secondary);
}

footer a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Enhanced responsive design */
@media (max-width: 768px) {
  main {
    padding: 32px 24px;
    gap: 28px;
  }

  .buttons {
    gap: 16px;
  }

  .btn {
    padding: 14px 28px;
    font-size: 1.1rem;
  }
}

@media (max-width: 520px) {
  main {
    padding: 28px 20px;
    gap: 24px;
    min-height: calc(100vh - 60px);
  }

  .buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
    justify-content: center;
    padding: 16px 32px;
  }

  .icons {
    gap: 24px;
  }

  .icons a {
    width: 52px;
    height: 52px;
    font-size: 1.5rem;
  }
}

@media (max-width: 360px) {
  main {
    padding: 20px 16px;
  }

  h1 {
    font-size: 1.3rem;
  }

  h2 {
    font-size: 0.95rem;
  }

  p {
    font-size: 0.9rem;
  }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .profile-pic:hover {
    transform: none;
  }

  .btn:hover,
  .btn:focus {
    transform: none;
  }

  .icons a:hover,
  .icons a:focus {
    transform: none;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary: #00d4ff;
    --secondary: #ff69b4;
    --text: #ffffff;
    --muted: #cccccc;
  }

  .card {
    border: 2px solid var(--primary);
  }
}