/* LeetCode Theme - Extended CSS */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: system-ui, -apple-system, sans-serif; background: linear-gradient(135deg, #0f172a, #1e293b); color: #e2e8f0; min-height: 100vh; padding: 20px; }
.container { max-width: 900px; margin: 0 auto; }
a { text-decoration: none; color: inherit; }
a:hover { color: #22d3ee; }

/* Colors */
.text-white { color: #fff; }
.text-cyan-400 { color: #22d3ee; }
.text-cyan-300 { color: #a5f3fc; }
.text-green-400 { color: #4ade80; }
.text-green-600 { color: #16a34a; }
.text-yellow-400 { color: #facc15; }
.text-yellow-600 { color: #ca8a04; }
.text-red-400 { color: #f87171; }
.text-red-600 { color: #dc2626; }
.text-pink-400 { color: #f472b6; }
.text-pink-600 { color: #db2777; }
.text-lime-400 { color: #a3e635; }
.text-gray-100 { color: #f3f4f6; }
.text-gray-200 { color: #e5e7eb; }
.text-gray-300 { color: #d1d5db; }
.text-gray-400 { color: #9ca3af; }
.text-gray-500 { color: #6b7280; }
.text-gray-600 { color: #4b5563; }
.text-gray-700 { color: #374151; }
.text-gray-800 { color: #1f2937; }

/* Backgrounds */
.bg-gray-100 { background: #f3f4f6; }
.bg-gray-600 { background: #4b5563; }
.bg-gray-700 { background: #374151; }
.bg-gray-800 { background: #1f2937; }
.bg-gray-900 { background: #111827; }
.bg-black { background: #000; }
.bg-cyan-400 { background: #22d3ee; }
.bg-cyan-500 { background: #06b6d4; }
.bg-cyan-600 { background: #0891b2; }
.bg-green-500 { background: #22c55e; }
.bg-green-600 { background: #16a34a; }
.bg-yellow-500 { background: #eab308; }
.bg-yellow-600 { background: #ca8a04; }
.bg-red-500 { background: #ef4444; }
.bg-red-600 { background: #dc2626; }
.bg-pink-500 { background: #ec4899; }
.bg-pink-600 { background: #db2777; }
.bg-lime-500 { background: #84cc16; }

/* Borders */
.border { border-width: 1px; border-style: solid; }
.border-b { border-bottom-width: 1px; border-style: solid; }
.border-gray-600 { border-color: #4b5563; }
.border-gray-700 { border-color: #374151; }
.border-cyan-400 { border-color: #22d3ee; }
.border-yellow-400 { border-color: #facc15; }
.border-red-400 { border-color: #f87171; }
.border-pink-400 { border-color: #f472b6; }
.border-lime-400 { border-color: #a3e635; }

/* Typography */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }
.font-bold { font-weight: 700; }
.font-mono { font-family: ui-monospace, monospace; }

/* Spacing */
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.m-0 { margin: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mt-12 { margin-top: 3rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.ml-2 { margin-left: 0.5rem; }
.ml-4 { margin-left: 1rem; }
.mr-2 { margin-right: 0.5rem; }
.mx-2 { margin-left: 0.5rem; margin-right: 0.5rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Display */
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.hidden { display: none; }

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.flex-1 { flex: 1 1 0%; }
.flex-grow { flex-grow: 1; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

/* Grid */
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.col-span-2 { grid-column: span 2 / span 2; }
.col-span-3 { grid-column: span 3 / span 3; }

/* Sizing */
.max-w-4xl { max-width: 56rem; }
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-8 { width: 2rem; }
.w-12 { width: 3rem; }
.w-16 { width: 4rem; }
.w-24 { width: 6rem; }
.w-32 { width: 8rem; }
.w-48 { width: 12rem; }
.w-64 { width: 16rem; }
.h-8 { height: 2rem; }
.h-12 { height: 3rem; }
.h-16 { height: 4rem; }
.min-h-\[80px\] { min-height: 80px; }
.min-h-screen { min-height: 100vh; }

/* Border Radius */
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-full { border-radius: 9999px; }

/* Effects */
.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1); }
.shadow-xl { box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1); }
.glow-cyan { box-shadow: 0 0 20px #22d3ee; }
.glow-lime { box-shadow: 0 0 20px #84cc16; }
.glow-pink { box-shadow: 0 0 20px #ec4899; }
.glow-yellow { box-shadow: 0 0 20px #eab308; }
.glow-red { box-shadow: 0 0 20px #ef4444; }

/* Hover */
.hover\:border-cyan-400:hover { border-color: #22d3ee; }
.hover\:border-yellow-400:hover { border-color: #facc15; }
.hover\:bg-gray-600:hover { background: #4b5563; }
.hover\:bg-gray-700:hover { background: #374151; }
.hover\:bg-cyan-500:hover { background: #06b6d4; }
.hover\:bg-cyan-600:hover { background: #0891b2; }
.hover\:bg-green-600:hover { background: #16a34a; }
.hover\:text-cyan-300:hover { color: #a5f3fc; }
.hover\:text-cyan-400:hover { color: #22d3ee; }

/* Transitions */
.transition-all { transition: all 0.2s; }
.transition-colors { transition: color 0.2s, background-color 0.2s; }
.duration-200 { transition-duration: 200ms; }
.duration-300 { transition-duration: 300ms; }

/* Misc */
.cursor-pointer { cursor: pointer; }
.overflow-auto { overflow: auto; }
.overflow-hidden { overflow: hidden; }
.overflow-x-auto { overflow-x: auto; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.relative { position: relative; }
.absolute { position: absolute; }
.top-0 { top: 0; }
.left-0 { left: 0; }
.right-0 { right: 0; }
.z-10 { z-index: 10; }

/* Code */
pre { background: #111827; padding: 1rem; border-radius: 0.5rem; overflow-x: auto; }
code { font-family: ui-monospace, monospace; }
.line-number { color: #6b7280; user-select: none; margin-right: 1rem; }