/* Global base styles */
:root {
  --bg: #0B1020;
  --card: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.1);
}

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

html, body {
  height: 100%;
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial;
  color: #e2e8f0;
}

/* Subtle grid background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(60% 40% at 50% 0%, rgba(99, 102, 241, 0.08), transparent 60%),
    radial-gradient(50% 40% at 100% 0%, rgba(6, 182, 212, 0.08), transparent 60%),
    radial-gradient(50% 40% at 0% 100%, rgba(217, 70, 239, 0.08), transparent 60%);
  pointer-events: none;
  z-index: -2;
}

/* Selection */
::selection {
  background: rgba(59, 82, 255, 0.35);
  color: #fff;
}

/* Scrollbar (WebKit) */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: #0B1020;
}
::-webkit-scrollbar-thumb {
  background: #1f2937;
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: #334155;
}

/* Orbits canvas overlay polish */
#orbits {
  filter: drop-shadow(0 0 8px rgba(6, 182, 212, 0.3));
}

/* Glass and neon effects */
.glass {
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* Cards hover lift */
.card-hover {
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
}
.card-hover:hover {
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.18);
  box-shadow: 0 10px 30px rgba(0,0,0,0.25), 0 0 40px rgba(99,102,241,0.15);
}

/* Shimmer line for headers and code blocks */
.shimmer-bar {
  position: relative;
  overflow: hidden;
}
.shimmer-bar::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  left: -150%;
  width: 150%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  animation: shimmer 3s ease-in-out infinite;
}

/* Button press feedback */
.btn-press {
  transition: transform .08s ease;
}
.btn-press:active {
  transform: translateY(1px);
}

/* Code block look */
pre code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* Modal animations */
.modal-enter {
  animation: modalIn .2s ease;
}
@keyframes modalIn {
  from { transform: translateY(8px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Focus rings */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid #06B6D4;
  outline-offset: 2px;
  border-radius: 8px;
}