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

:root {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.5;
    font-weight: 400;
    color-scheme: dark;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --border-color: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent-blue: #0284c7;
    --accent-blue-hover: #0369a1;
    --accent-orange: #f59e0b;
    --green: #22c55e;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

#app {
    min-height: 100vh;
}

/* Utility Classes */
.min-h-screen { min-height: 100vh; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.w-64 { width: 16rem; }
.w-80 { width: 20rem; }
.w-full { width: 100%; }
.w-2 { width: 0.5rem; }
.w-8 { width: 2rem; }
.w-12 { width: 3rem; }
.w-16 { width: 4rem; }
.h-2 { height: 0.5rem; }
.h-8 { height: 2rem; }
.h-12 { height: 3rem; }
.h-16 { height: 4rem; }
.h-full { height: 100%; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.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; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }
.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; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mb-1 { margin-top: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-full { border-radius: 9999px; }
.border { border-width: 1px; }
.border-r { border-right-width: 1px; }
.border-b { border-bottom-width: 1px; }
.border-t { border-top-width: 1px; }
.border-l { border-left-width: 1px; }
.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-6xl { font-size: 3.75rem; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-center { text-align: center; }
.text-white { color: #ffffff; }
.overflow-auto { overflow: auto; }
.relative { position: relative; }
.absolute { position: absolute; }
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.top-1 { top: 0.25rem; }
.right-1 { right: 0.25rem; }
.cursor-pointer { cursor: pointer; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.animate-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .5; }
}

/* Color utilities */
.bg-slate-700 { background-color: #334155; }
.bg-slate-800 { background-color: var(--bg-card); }
.bg-slate-900 { background-color: var(--bg-primary); }
.bg-blue-600 { background-color: var(--accent-blue); }
.bg-green-500 { background-color: var(--green); }
.bg-orange-500 { background-color: var(--accent-orange); }
.bg-gradient-to-r { background-image: linear-gradient(to right, var(--tw-gradient-stops)); }
.from-blue-400 { --tw-gradient-from: #60a5fa; --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to); }
.to-orange-500 { --tw-gradient-to: var(--accent-orange); }
.from-blue-500 { --tw-gradient-from: #3b82f6; --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to); }
.from-blue-600 { --tw-gradient-from: var(--accent-blue); --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to); }
.to-orange-600 { --tw-gradient-to: #ea580c; }
.from-blue-400 { --tw-gradient-from: #60a5fa; --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to); }
.bg-clip-text { -webkit-background-clip: text; background-clip: text; }
.text-transparent { color: transparent; }
.text-slate-300 { color: #cbd5e1; }
.text-slate-400 { color: var(--text-secondary); }
.text-slate-500 { color: #64748b; }
.text-blue-100 { color: #dbeafe; }
.text-blue-400 { color: #60a5fa; }
.text-blue-700 { color: #1d4ed8; }
.text-green-400 { color: #4ade80; }
.text-orange-500 { color: var(--accent-orange); }
.text-red-400 { color: #f87171; }
.text-yellow-500 { color: #eab308; }
.border-slate-700 { border-color: var(--border-color); }
.border-blue-500 { border-color: #3b82f6; }
.shadow-lg { box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); }

/* Hover states */
.hover\:bg-slate-600:hover { background-color: #475569; }
.hover\:bg-slate-700:hover { background-color: #334155; }
.hover\:bg-blue-50:hover { background-color: #eff6ff; }
.hover\:bg-blue-500:hover { background-color: #3b82f6; }
.hover\:text-white:hover { color: #ffffff; }
.hover\:text-red-400:hover { color: #f87171; }
.hover\:border-blue-500:hover { border-color: #3b82f6; }
.transition-colors { transition-property: color, background-color, border-color; transition-duration: 200ms; }

/* Component styles */
.btn-primary {
    background-color: var(--accent-blue);
    color: white;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    cursor: pointer;
    transition: background-color 200ms;
}

.btn-primary:hover {
    background-color: var(--accent-blue-hover);
}

.btn-secondary {
    background-color: #334155;
    color: white;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: background-color 200ms;
}

.btn-secondary:hover {
    background-color: #475569;
}

.card {
    background-color: var(--bg-card);
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.card:hover {
    border-color: var(--accent-blue);
}

.input {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    color: white;
    width: 100%;
}

.input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

/* Navigation */
a.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 0.25rem;
    color: #cbd5e1;
    text-decoration: none;
    transition: background-color 200ms;
}

a.nav-link:hover {
    background-color: #334155;
}

a.nav-link.active {
    background-color: var(--accent-blue);
    color: white;
}

@media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}