@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&display=swap');

:root {
  --radius: 0.5rem;
  --background: oklch(1 0 0);
  --foreground: oklch(0.141 0.005 285.823);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.141 0.005 285.823);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.141 0.005 285.823);
  --primary: oklch(0.21 0.006 285.885);
  --primary-foreground: oklch(0.985 0 0);
  --secondary: oklch(0.967 0.001 286.375);
  --secondary-foreground: oklch(0.21 0.006 285.885);
  --muted: oklch(0.967 0.001 286.375);
  --muted-foreground: oklch(0.552 0.016 285.938);
  --accent: oklch(0.967 0.001 286.375);
  --accent-foreground: oklch(0.21 0.006 285.885);
  --destructive: oklch(0.577 0.245 27.325);
  --border-color: oklch(0.92 0.004 286.32);
  --input: oklch(0.92 0.004 286.32);
  --ring: oklch(0.705 0.015 286.067);
  --chart-1: oklch(0.646 0.222 41.116);
  --chart-2: oklch(0.6 0.118 184.704);
  --chart-3: oklch(0.398 0.07 227.392);
  --chart-4: oklch(0.828 0.189 84.429);
  --chart-5: oklch(0.769 0.188 70.08);
  --sidebar: oklch(0.985 0 0);
  --sidebar-foreground: oklch(0.141 0.005 285.823);
  --sidebar-primary: oklch(0.21 0.006 285.885);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.967 0.001 286.375);
  --sidebar-accent-foreground: oklch(0.21 0.006 285.885);
  --sidebar-border: oklch(0.92 0.004 286.32);
  --sidebar-ring: oklch(0.705 0.015 286.067);
  --shadow: 0px 10px 15px -3px rgba(0,0,0,0.1),0px 4px 6px -2px rgba(0,0,0,0.05);
  --border: 1px solid var(--border-color);
  --toggle-bg: oklch(0.705 0.015 286.067);
  --toggle-knob: oklch(1 0 0);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: oklch(0.141 0.005 285.823);
    --foreground: oklch(0.985 0 0);
    --card: oklch(0.21 0.006 285.885);
    --card-foreground: oklch(0.985 0 0);
    --popover: oklch(0.21 0.006 285.885);
    --popover-foreground: oklch(0.985 0 0);
    --primary: oklch(0.92 0.004 286.32);
    --primary-foreground: oklch(0.21 0.006 285.885);
    --secondary: oklch(0.274 0.006 286.033);
    --secondary-foreground: oklch(0.985 0 0);
    --muted: oklch(0.274 0.006 286.033);
    --muted-foreground: oklch(0.705 0.015 286.067);
    --accent: oklch(0.274 0.006 286.033);
    --accent-foreground: oklch(0.985 0 0);
    --destructive: oklch(0.704 0.191 22.216);
    --border-color: oklch(1 0 0 / 10%);
    --input: oklch(1 0 0 / 15%);
    --ring: oklch(0.552 0.016 285.938);
    --sidebar: oklch(0.21 0.006 285.885);
    --sidebar-foreground: oklch(0.985 0 0);
    --sidebar-border: oklch(1 0 0 / 10%);
    --toggle-bg: oklch(0.4 0.016 285.938);
  }
}

html[data-theme='light'] {
  color-scheme: light;
  --background: oklch(1 0 0);
  --foreground: oklch(0.141 0.005 285.823);
  --primary: oklch(0.21 0.006 285.885);
  --toggle-bg: oklch(0.705 0.015 286.067);
}

html[data-theme='dark'] {
  color-scheme: dark;
  --background: oklch(0.141 0.005 285.823);
  --foreground: oklch(0.985 0 0);
  --primary: oklch(0.92 0.004 286.32);
  --toggle-bg: oklch(0.4 0.016 285.938);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scrollbar-width: auto;
  scrollbar-color: var(--muted-foreground) var(--muted);
}

*::-webkit-scrollbar { width: 12px; }
*::-webkit-scrollbar-thumb { background: var(--muted-foreground); border-radius: 6px; border: 2px solid var(--background); }
*::-webkit-scrollbar-track { background: var(--muted); border-radius: 6px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.5;
  padding: 2rem 1rem;
  transition: background-color 0.3s ease, color 0.3s ease;
  max-width: 900px;
  margin: 0 auto;
}

h1, h2, h3, h4, h5, h6 { margin-bottom: 0.5em; font-weight: 700; }
h1 { letter-spacing: -0.025em; font-size: 1.875rem; line-height: 2.25rem; }
h2 { letter-spacing: -0.025em; font-size: 1.25rem; line-height: 1.75rem; font-weight: 600; }
h3 { letter-spacing: -0.025em; font-size: 1.125rem; line-height: 1.75rem; font-weight: 600; }
p { margin: 1em 0; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { text-decoration: underline; color: color-mix(in srgb, var(--primary) 80%, transparent); }
ul, ol { margin-bottom: 1em; padding-left: 1.5em; }
header { margin-bottom: 2rem; }
nav ul { list-style: none; padding: 0; display: flex; gap: 1rem; }
section { margin-bottom: 2rem; }
form { display: flex; flex-direction: column; gap: 1rem; }

input, select, textarea {
  font: inherit;
  padding: 0.5rem;
  border: var(--border);
  border-radius: var(--radius);
  background-color: var(--background);
  color: var(--foreground);
  font-size: 0.875rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ring) 15%, transparent);
}

/* Modern Checkbox */
input[type="checkbox"] {
  appearance: none;
  width: 1.2rem;
  height: 1.2rem;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  background: var(--background);
  cursor: pointer;
  position: relative;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  vertical-align: middle;
  margin-right: 0.5rem;
}

input[type="checkbox"]:checked {
  background: var(--primary);
  border-color: var(--primary);
}

input[type="checkbox"]:checked::after {
  content: "✓";
  position: absolute;
  color: var(--primary-foreground);
  font-size: 0.85rem;
  font-weight: bold;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

input[type="checkbox"]:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ring) 30%, transparent);
}

/* Modern Radio */
input[type="radio"] {
  appearance: none;
  width: 1.2rem;
  height: 1.2rem;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  background: var(--background);
  cursor: pointer;
  position: relative;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  vertical-align: middle;
  margin-right: 0.5rem;
}

input[type="radio"]:checked {
  border-color: var(--primary);
  background: var(--primary);
  box-shadow: inset 0 0 0 3px var(--background);
}

input[type="radio"]:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ring) 30%, transparent);
}

/* Modern Switch (Toggle) */
input[type="checkbox"].toggle {
  appearance: none;
  width: 3rem;
  height: 1.5rem;
  background: var(--toggle-bg);
  border-radius: 9999px;
  border: none;
  position: relative;
  cursor: pointer;
  transition: background 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  margin-right: 0.5rem;
}

input[type="checkbox"].toggle::before {
  content: "";
  position: absolute;
  width: 1.25rem;
  height: 1.25rem;
  background: var(--toggle-knob);
  border-radius: 50%;
  top: 0.125rem;
  left: 0.125rem;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

input[type="checkbox"].toggle:checked {
  background: var(--primary);
}

input[type="checkbox"].toggle:checked::before {
  transform: translateX(1.5rem);
}

input[type="checkbox"].toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ring) 30%, transparent);
}

/* Modern Range */
input[type="range"] {
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border-color);
  border-radius: 9999px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 1rem;
  height: 1rem;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

input[type="range"]:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ring) 30%, transparent);
}

/* Buttons */
button, input[type="submit"], input[type="button"], input[type="reset"] {
  font: inherit;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  transition: all 0.2s ease;
}

button {
  border: none;
  background-color: var(--primary);
  color: var(--primary-foreground);
}
button:hover { background-color: color-mix(in srgb, var(--primary) 90%, transparent); }
button:active { transform: scale(0.98); }

button[secondary] {
  background-color: var(--secondary);
  color: var(--secondary-foreground);
}
button[secondary]:hover { background-color: color-mix(in srgb, var(--secondary) 90%, transparent); }

input[type="submit"] {
  border: var(--border);
  background-color: transparent;
  color: var(--foreground);
}
input[type="submit"]:hover { background-color: color-mix(in srgb, var(--muted) 90%, transparent); }

input[type="button"] {
  border: none;
  background-color: transparent;
  color: var(--foreground);
}
input[type="button"]:hover { background-color: var(--muted); }

input[type="reset"] {
  border: none;
  background-color: var(--destructive);
  color: var(--primary-foreground);
}
input[type="reset"]:hover { background-color: color-mix(in srgb, var(--destructive) 90%, transparent); }

fieldset {
  border: var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  display: flex;
  gap: 0.5rem;
}

fieldset[role="group"] {
  border: none;
  padding: 1rem;
  display: flex;
  gap: 0;
}
fieldset[role="group"] > * {
  border-radius: 0;
}
fieldset[role="group"] > *:first-child {
  border-top-left-radius: var(--radius);
  border-bottom-left-radius: var(--radius);
  border-right: 0;
}
fieldset[role="group"] > *:last-child {
  border-top-right-radius: var(--radius);
  border-bottom-right-radius: var(--radius);
  border-right: var(--border);
}

legend { padding: 0 0.5rem; }
label { display: block; }
small { color: var(--muted-foreground); }
img { max-width: 100%; height: auto; border-radius: var(--radius); }
img[avatar] { border-radius: 50%; }
blockquote {
  border-left: 4px solid var(--border-color);
  padding-left: 1rem;
  font-style: italic;
}
progress {
  width: 100%;
  appearance: none;
  height: 0.5rem;
  border-radius: 9999px;
  background-color: var(--muted);
  border: 0;
}
progress::-webkit-progress-value { border-radius: 9999px; background-color: var(--primary); }
progress::-moz-progress-bar { border-radius: 9999px; background-color: var(--primary); }

details {
  border: var(--border);
  border-radius: var(--radius);
  padding: 0.5rem;
  margin-bottom: 1rem;
}
summary {
  cursor: pointer;
  font-weight: bold;
}
article {
  border: var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
}
footer {
  margin-top: 2rem;
  color: var(--muted-foreground);
}

/* Dialog, Drawer, Sheet Animations */
dialog {
  background-color: var(--background);
  color: var(--foreground);
  border: var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin: auto;
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
dialog[open] {
  opacity: 1;
  transform: scale(1);
}
dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.8);
  transition: backdrop-filter 0.2s ease;
}

dialog[drawer] {
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
  top: auto;
  bottom: 0;
  max-height: 50vh;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease;
}
dialog[drawer][open] {
  transform: translateY(0);
}

dialog[sheet-top], dialog[sheet-bottom], dialog[sheet-left], dialog[sheet-right] {
  border-radius: 0;
  margin: 0;
}
dialog[sheet-top], dialog[sheet-bottom] { width: 100vw; max-height: 50vh; }
dialog[sheet-left], dialog[sheet-right] { height: 100vh; max-width: 50vw; }

dialog[sheet-top] { transform: translateY(-100%); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
dialog[sheet-top][open] { transform: translateY(0); }

dialog[sheet-bottom] { transform: translateY(100%); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); top: auto; bottom: 0; }
dialog[sheet-bottom][open] { transform: translateY(0); }

dialog[sheet-left] { transform: translateX(-100%); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
dialog[sheet-left][open] { transform: translateX(0); }

dialog[sheet-right] { transform: translateX(100%); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); left: auto; right: 0; }
dialog[sheet-right][open] { transform: translateX(0); }

/* Accordion Animation */
details {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
details[open] summary ~ * {
  animation: accordion-slide 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes accordion-slide {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Sidebar Animation */
aside {
  background-color: var(--sidebar);
  border: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  padding: 0.5rem;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
aside[data-collapsed="true"] {
  transform: translateX(-100%);
}

/* Utility */
[aria-busy="true"] { opacity: 0.7; cursor: progress; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}
@media (max-width: 600px) {
  body { padding: 0.5rem; }
  nav ul { flex-direction: column; }
}
:disabled, [disabled] { cursor: not-allowed; opacity: 0.5; pointer-events: none; }
hr {
  border: 0;
  height: 1px;
  margin: 1rem 0;
  background-color: var(--border-color);
}
kbd {
  padding: 0.125rem 0.625rem;
  background-color: var(--primary);
  color: var(--primary-foreground);
  border-radius: 6px;
  font-weight: bold;
}
table {
  border-collapse: collapse;
  width: 100%;
}
table th { color: var(--muted-foreground); text-align: start; padding: 0.5rem; }
table td { padding: 0.5rem; text-align: start; }
table tr { border-bottom: var(--border); }
pre { border-radius: var(--radius); overflow-x: auto; }
code {
  border: var(--border);
  border-radius: var(--radius);
  background-color: var(--primary);
  color: var(--primary-foreground);
  padding: 0.2rem;
}
[tooltip-top], [tooltip-bottom], [tooltip-left], [tooltip-right] { position: relative; }
[tooltip-top]::after, [tooltip-bottom]::after, [tooltip-left]::after, [tooltip-right]::after {
  position: absolute;
  white-space: nowrap;
  background-color: var(--primary);
  color: var(--primary-foreground);
  padding: 6px 8px;
  font-size: 0.875em;
  border-radius: var(--radius);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}
[tooltip-top]:hover::after, [tooltip-bottom]:hover::after, [tooltip-left]:hover::after, [tooltip-right]:hover::after { opacity: 1; }
[tooltip-top]::after { content: attr(tooltip-top); left: 50%; top: -0.8rem; transform: translateX(-50%) translateY(-100%); }
[tooltip-bottom]::after { content: attr(tooltip-bottom); left: 50%; top: calc(100% + 0.8rem); transform: translateX(-50%); }
[tooltip-left]::after { content: attr(tooltip-left); left: -0.3rem; top: 50%; transform: translateX(-100%) translateY(-50%); }
[tooltip-right]::after { content: attr(tooltip-right); left: calc(100% + 0.3rem); top: 50%; transform: translateY(-50%); }
menu {
  display: flex;
  flex-direction: row;
  border: var(--border);
  border-radius: var(--radius);
  width: fit-content;
  list-style: none;
}
menu li { padding: 0.25rem 0.75rem; }
div[skeleton] {
  background-color: var(--input);
  animation: shimmer 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  border-radius: var(--radius);
}
@keyframes shimmer {
  50% { opacity: 0.5; }
}
[popover] {
  inset: unset;
  position: absolute;
  bottom: calc(anchor(top) + 5px);
  justify-self: anchor-center;
  margin: 0;
  border: var(--border);
  border-radius: var(--radius);
  padding: 0.5rem;
}
nav {
  display: flex;
  align-items: center;
  --separator: attr(breadcrumb, '>');
}
nav > a {
  padding: 0 0.625rem 0 0;
  color: var(--muted-foreground);
}
nav > a::after {
  padding: 0 0 0 0.625rem;
  display: inline-block;
  content: var(--separator);
}
nav > a:last-child {
  color: var(--foreground);
}
nav > a:last-child::after {
  content: '';
}