/* Base resets and dark theme defaults */
*, ::before, ::after { box-sizing: border-box; border-width: 0; border-style: solid; border-color: #27272a; }
html { line-height: 1.5; -webkit-text-size-adjust: 100%; -moz-tab-size: 4; tab-size: 4; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; }
body { margin: 0; line-height: inherit; background-color: #0b0f17; color: #c9d1d9; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* Grid, Flexbox & Structural Layout Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }

/* Sizing, Margins & Padding */
.min-h-screen { min-height: 100vh; }
.w-full { width: 100%; }
.max-w-2xl { max-width: 42rem; }
.max-w-xl { max-width: 36rem; }
.m-8, .my-8 { margin-top: 2rem; margin-bottom: 2rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-1.5 { margin-top: 0.375rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.pb-6 { padding-bottom: 1.5rem; }
.pt-6 { padding-top: 1.5rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-1.5 { padding-top: 0.375rem; padding-bottom: 0.375rem; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-x-6 { column-gap: 1.5rem; }
.gap-y-2.5 { row-gap: 0.625rem; }

/* Borders & Backgrounds */
.border { border-width: 1px; }
.border-b { border-bottom-width: 1px; }
.border-t { border-top-width: 1px; }
.border-zinc-800\/50 { border-color: rgba(39, 39, 42, 0.5); }
.border-zinc-800\/60 { border-color: rgba(39, 39, 42, 0.6); }
.border-zinc-800\/80 { border-color: rgba(39, 39, 42, 0.8); }
.border-zinc-800 { border-color: rgb(39, 39, 42); }
.rounded-xl { border-radius: 0.75rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-md { border-radius: 0.375rem; }
.bg-zinc-900\/10 { background-color: rgba(24, 24, 27, 0.1); }
.bg-zinc-900\/30 { background-color: rgba(24, 24, 27, 0.3); }
.bg-zinc-900\/80 { background-color: rgba(24, 24, 27, 0.8); }
.backdrop-blur-md { backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.shadow-2xl { box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); }

/* Typography & Colors */
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-\[11px\] { font-size: 11px; }
.font-bold { font-weight: 700; }
.font-mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.uppercase { text-transform: uppercase; }
.tracking-tight { letter-spacing: -0.025em; }
.tracking-widest { letter-spacing: 0.1em; }
.leading-relaxed { line-height: 1.625; }
.text-zinc-100 { color: #f4f4f5; }
.text-zinc-200 { color: #e4e4e7; }
.text-zinc-300 { color: #d4d4d8; }
.text-zinc-400 { color: #a1a1aa; }
.text-zinc-500 { color: #71717a; }
.text-emerald-400 { color: #34d399; }

/* Transitions & Interactivity */
.transition-colors { transition-property: color, background-color, border-color; transition-duration: 150ms; }
.transition-all { transition-property: all; transition-duration: 200ms; }
.duration-200 { transition-duration: 200ms; }
.glow-hover:hover { box-shadow: 0 0 15px rgba(16, 185, 129, 0.12); border-color: rgba(52, 211, 153, 0.3); }
.hover\:text-emerald-400:hover { color: #34d399; }
.selection\:bg-emerald-500 ::selection { background-color: #10b981; color: #000; }

/* Responsive break-points (sm: screens larger than 640px) */
@media (min-width: 640px) {
    .sm\:p-8 { padding: 2rem; }
    .sm\:flex-row { flex-direction: row; }
    .sm\:items-center { align-items: center; }
    .sm\:justify-between { justify-content: space-between; }
    .sm\:self-center { align-self: center; }
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sm\:col-span-2 { grid-column: span 2 / span 2; }
}