/*
 * Hand-authored defaults to mirror Safari’s HTML5 UA look (macOS).
 * Tuned for the khula demo page; works in Chromium + WebKit.
 */

:root {
  --link: #0000ee;
  --link-visited: #551a8b;
  --link-active: #ee0000;
  --text: #000;
  --bg: #fff;
  --ui-font:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", system-ui,
    sans-serif;
  --body-serif: "Times New Roman", Times, ui-serif, serif;
  --mono: ui-monospace, Menlo, Monaco, "Courier New", Courier, monospace;
  --separator: rgba(60, 60, 67, 0.29);
  --field-border: #c6c6c8;
  --field-radius: 5px; /* macOS Safari text field–like corner */
  --audio-chrome: #d1d1d6;
  --audio-chrome-border: #a8a8ae;
  --apple-blue: #007aff;
  --meter-good: #34c759;
}

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

html {
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 8px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body-serif);
  font-size: 16px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

/* ----- Sections ----- */
header,
hgroup,
nav,
main,
article,
section,
aside,
footer,
address,
search {
  display: block;
}

h1 {
  font-size: 2em;
  font-weight: bold;
  margin: 0.67em 0;
}

h2 {
  font-size: 1.5em;
  font-weight: bold;
  margin: 0.75em 0;
}

h3 {
  font-size: 1.17em;
  font-weight: bold;
  margin: 0.83em 0;
}

h4 {
  font-size: 1em;
  font-weight: bold;
  margin: 1.12em 0;
}

h5 {
  font-size: 0.83em;
  font-weight: bold;
  margin: 1.5em 0;
}

h6 {
  font-size: 0.67em;
  font-weight: bold;
  margin: 1.67em 0;
}

p {
  margin: 1em 0;
}

blockquote {
  margin: 1em 40px;
}

pre {
  font-family: var(--mono);
  white-space: pre;
  margin: 1em 0;
}

hr {
  border: none;
  border-top: 1px inset #c0c0c0;
  margin: 0.5em 0;
}

figure {
  margin: 1em 40px;
}

figcaption {
  display: block;
}

/* ----- Phrasing ----- */
a:link {
  color: var(--link);
  text-decoration: underline;
}

a:visited {
  color: var(--link-visited);
}

a:active {
  color: var(--link-active);
}

b,
strong {
  font-weight: bold;
}

cite,
dfn,
em,
i,
var {
  font-style: italic;
}

abbr[title] {
  text-decoration: underline dotted;
}

code,
kbd,
samp {
  font-family: var(--mono);
}

mark {
  background: #ff0;
  color: var(--text);
}

q::before {
  content: open-quote;
}

q::after {
  content: close-quote;
}

s,
del {
  text-decoration: line-through;
}

u,
ins {
  text-decoration: underline;
}

small {
  font-size: 0.83em;
}

sub,
sup {
  font-size: 0.75em;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -0.25em;
}

sup {
  top: -0.4em;
}

ruby {
  ruby-position: over;
}

rt {
  font-size: 0.6em;
}

/* ----- Lists ----- */
ul,
ol,
menu {
  margin: 1em 0;
  padding-left: 40px;
}

ul,
menu {
  list-style-type: disc;
}

ol {
  list-style-type: decimal;
}

li {
  display: list-item;
}

dl {
  margin: 1em 0;
}

dt {
  font-weight: bold;
}

dd {
  margin: 0 0 0 40px;
}

/* ----- Tables ----- */
table {
  border-collapse: separate;
  border-spacing: 2px;
}

caption {
  caption-side: top;
  text-align: center;
}

th {
  font-weight: bold;
  text-align: center;
}

td,
th {
  padding: 1px;
}

/* ----- Embedded ----- */
img,
video,
canvas,
iframe,
embed,
object {
  max-width: 100%;
  border: none;
  border-image: none;
}

iframe {
  border: none;
  border-image: none;
  box-shadow:
    inset 0 1px 0 rgba(0, 0, 0, 0.12),
    inset 1px 0 0 rgba(0, 0, 0, 0.12);
}

svg:not(:root) {
  overflow: hidden;
}

math {
  font-style: normal;
}

audio {
  width: 200px;
  height: 32px;
  vertical-align: middle;
  border-radius: var(--field-radius);
  overflow: hidden;
  background: var(--audio-chrome);
  border: 1px solid var(--audio-chrome-border);
}

/* Darker chrome; radius matches text inputs (WebKit/Chromium) */
audio::-webkit-media-controls-enclosure {
  border-radius: var(--field-radius);
  background: linear-gradient(to bottom, #dcdce0, var(--audio-chrome));
}

audio::-webkit-media-controls-panel {
  background: transparent;
}

video {
  border-radius: 8px;
  background: #000;
}

/* ----- Forms (UI font + Safari-like chrome) ----- */
button,
input,
select,
textarea {
  font-family: var(--ui-font);
  font-size: 13px;
  color: var(--text);
  border: 1px solid var(--field-border);
  border-radius: var(--field-radius);
  background: #fff;
  box-shadow:
    inset 0 1px 0 rgba(0, 0, 0, 0.12),
    inset 1px 0 0 rgba(0, 0, 0, 0.12);
}

fieldset {
  /* No full box border — groove on R/B read as extra edges next to text fields */
  border: none;
  margin: 0 2px;
  padding: 0.5em 0.75em 0.75em;
  min-width: min-content;

  box-shadow:
    inset 0 1px 0 rgba(0, 0, 0, 0.1),
    inset 1px 0 0 rgba(0, 0, 0, 0.1);
}

legend {
  padding: 0 4px;
}

label {
  cursor: pointer;
  margin-right: 0.35em;
}

/* Text inputs + search: line-height–tight, Safari-like radius (not pill) */
input:not([type]),
input[type="text"],
input[type="search"],
input[type="password"],
input[type="email"],
input[type="url"],
input[type="tel"],
input[type="number"] {
  -webkit-appearance: none;
  appearance: none;
  line-height: 1.2;
  min-height: calc(1.2em + 4px);
  padding: 2px 8px;
  border: 0 solid transparent;
  border-image: none;
  border-radius: var(--field-radius);
  background: #fff;
  box-shadow:
    inset 0 1px 0 rgba(0, 0, 0, 0.12),
    inset 1px 0 0 rgba(0, 0, 0, 0.12);
}

input[type="search"] {
  border-radius: var(--field-radius);
}

textarea {
  -webkit-appearance: none;
  appearance: none;
  min-height: 5em;
  width: min(100%, 20rem);
  padding: 6px 8px;
  border: 0 solid transparent;
  border-image: none;
  border-radius: var(--field-radius);
  background: #fff;
  box-shadow:
    inset 0 1px 0 rgba(0, 0, 0, 0.12),
    inset 1px 0 0 rgba(0, 0, 0, 0.12);
  resize: both;
  vertical-align: top;
}

button,
input[type="button"],
input[type="submit"],
input[type="reset"] {
  -webkit-appearance: none;
  appearance: none;
  padding: 4px 14px;
  min-height: 28px;
  border: 1px solid var(--field-border);
  border-radius: 8px;
  background: linear-gradient(to bottom, #fff, #ececec);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.9) inset;
  cursor: default;
}

button:active,
input[type="button"]:active {
  background: #e0e0e0;
}

select {
  -webkit-appearance: none;
  appearance: none;
  min-height: 28px;
  padding: 4px 28px 4px 10px;
  border: 1px solid var(--field-border);
  border-radius: 8px;
  background-color: #fff;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath fill='%23666' d='M0 0h10L5 6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

input[type="checkbox"],
input[type="radio"] {
  width: 16px;
  height: 16px;
  vertical-align: -2px;
  accent-color: var(--apple-blue);
}

progress {
  -webkit-appearance: none;
  appearance: none;
  width: 10em;
  height: 6px;
  vertical-align: middle;
  border-radius: 3px;
  overflow: hidden;
}

progress::-webkit-progress-bar {
  background: #e5e5ea;
  border-radius: 3px;
}

progress::-webkit-progress-value {
  background: var(--apple-blue);
  border-radius: 3px;
}

progress::-moz-progress-bar {
  background: var(--apple-blue);
  border-radius: 3px;
}

meter {
  width: 8em;
  height: 0.75em;
  vertical-align: middle;
}

meter::-webkit-meter-optimum-value {
  background: var(--meter-good);
}

meter::-moz-meter-bar {
  background: var(--meter-good);
}

output {
  font-family: var(--ui-font);
}

/* ----- Interactive ----- */
details {
  display: block;
}

summary {
  display: list-item;
  list-style: disclosure-closed inside;
  cursor: pointer;
}

details[open] > summary {
  list-style-type: disclosure-open;
}

dialog {
  border: 1px solid var(--field-border);
  border-radius: 12px;
  padding: 1em;
  background: #fff;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

dialog:not([open]) {
  display: none;
}

dialog[open] {
  display: block;
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.25);
}

template {
  display: none;
}

slot {
  display: contents;
}

menu {
  list-style-type: disc;
}

/* ----- Misc ----- */
address {
  font-style: italic;
}

/* Safari-like datalist panel (JS polyfill; native <datalist> UI is not styleable) */
.safari-datalist-popover {
  position: fixed;
  z-index: 2147483647;
  box-sizing: border-box;
  padding: 0;
  overflow: visible;
  font-family: var(--ui-font);
  font-size: 13px;
  line-height: 1.35;
  color: var(--text);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(40px) saturate(180%);
  -webkit-backdrop-filter: blur(40px) saturate(180%);
  box-shadow:
    0 0 0 0.5px rgba(0, 0, 0, 0.06),
    0 10px 40px rgba(0, 0, 0, 0.14),
    0 2px 10px rgba(0, 0, 0, 0.06);
}

.safari-datalist-popover-inner {
  box-sizing: border-box;
  padding: 0.3rem 0.35rem;
  max-height: min(40vh, 260px);
  overflow-y: auto;
  overflow-x: hidden;
  border-radius: inherit;
}

.safari-datalist-popover::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  width: 0;
  height: 0;
  margin-left: -6px;
  border: 6px solid transparent;
  border-bottom-color: rgba(250, 250, 252, 0.95);
  pointer-events: none;
}

.safari-datalist-popover--above::before {
  top: auto;
  bottom: -6px;
  margin-left: -6px;
  border-bottom-color: transparent;
  border-top-color: rgba(250, 250, 252, 0.95);
}

.safari-datalist-option {
  padding: 0.28rem 0.85rem;
  border-radius: 999px;
  cursor: default;
  white-space: nowrap;
}

.safari-datalist-option-active,
.safari-datalist-option:hover {
  background: rgba(0, 0, 0, 0.055);
}

:focus-visible {
  outline: 2px solid rgba(0, 122, 255, 0.5);
  outline-offset: 0;
}