/* The look of the pages, after Apple's Human Interface Guidelines: the
   system font (SF Pro and SF Hebrew on Apple devices, Segoe UI on Windows),
   grouped lists on light grey (black in dark mode), the iOS system colours,
   switches, segmented controls, a sidebar as in macOS System Settings and
   translucent bars. The same file is static/style.css in lesson-recorder
   (Study/Generic) and in screen-watch (Apps/Generic). */

:root {
  color-scheme: light;
  --bg: #f2f2f7;                 /* systemGroupedBackground */
  --card: #ffffff;               /* secondarySystemGroupedBackground */
  --card-2: #f2f2f7;             /* a field or a box inside a card */
  --side: #e8e8ed;               /* the sidebar */
  --text: #1d1d1f;
  --muted: #6e6e73;              /* secondary text, readable on white */
  --faint: #aeaeb2;
  --line: rgba(60, 60, 67, .17); /* separators */
  --fill: rgba(118, 118, 128, .12);
  --fill-2: rgba(118, 118, 128, .2);
  --switch-off: #e9e9eb;
  --accent: #007aff;
  --accent-text: #ffffff;
  --accent-ink: #0068da;         /* blue text on white */
  --red: #ff3b30;    --red-ink: #d70015;
  --green: #34c759;  --green-ink: #248a3d;
  --orange: #ff9500; --orange-ink: #c93400;
  --yellow: #ffcc00;
  --indigo: #5856d6; --purple: #af52de; --pink: #ff2d55; --teal: #30b0c7; --gray: #8e8e93;
  --bar: rgba(242, 242, 247, .78);
  --alert: rgba(250, 250, 252, .9);
  --shadow: 0 0 0 .5px rgba(0, 0, 0, .04), 0 1px 3px rgba(0, 0, 0, .05);
  --radius: 12px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Hebrew", "Segoe UI Variable Text", "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  /* the names the scripts use */
  --live: var(--red-ink);
  --ok: var(--green-ink);
  --warn: var(--orange-ink);
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #000000;
    --card: #1c1c1e;
    --card-2: #2c2c2e;
    --side: #161618;
    --text: #f5f5f7;
    --muted: #98989f;
    --faint: #636366;
    --line: rgba(84, 84, 88, .62);
    --fill: rgba(118, 118, 128, .24);
    --fill-2: rgba(118, 118, 128, .34);
    --switch-off: #39393d;
    --accent: #0a84ff;
    --accent-ink: #409cff;
    --red: #ff453a;    --red-ink: #ff6961;
    --green: #30d158;  --green-ink: #30d158;
    --orange: #ff9f0a; --orange-ink: #ffb340;
    --yellow: #ffd60a;
    --indigo: #5e5ce6; --purple: #bf5af2; --pink: #ff375f; --teal: #40c8e0; --gray: #8e8e93;
    --bar: rgba(22, 22, 24, .78);
    --alert: rgba(44, 44, 46, .92);
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}
[hidden] { display: none !important; }
a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: .88em; }
bdi { unicode-bidi: isolate; }
::selection { background: color-mix(in srgb, var(--accent) 28%, transparent); }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 55%, transparent); outline-offset: 1px; }

h1 { font-size: 28px; line-height: 1.2; font-weight: 700; margin: 0; letter-spacing: -.01em; }
h2 { font-size: 17px; font-weight: 600; margin: 0 0 10px; }
h3 { font-size: 15px; font-weight: 600; margin: 0; }
p { margin: 0 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.lead { font-size: 15px; color: var(--muted); max-width: 720px; margin: 4px 0 0; }

/* --- layout: a sidebar as in macOS System Settings, a bar on top on narrow screens --- */

.app { display: grid; grid-template-columns: 250px minmax(0, 1fr); min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
  background: var(--side); border-inline-end: .5px solid var(--line);
  padding: 18px 12px 16px; display: flex; flex-direction: column; gap: 14px;
}
.brand { display: flex; align-items: center; gap: 11px; padding: 0 6px; }
.brand b { display: block; font-size: 15px; }
.brand .muted { font-size: 12px; font-variant-numeric: tabular-nums; }
.app-icon {
  width: 38px; height: 38px; border-radius: 9px; flex: none; display: grid; place-items: center; color: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .18), inset 0 0 0 .5px rgba(255, 255, 255, .15);
}
.app-icon svg { width: 22px; height: 22px; }
.nav { display: grid; gap: 2px; }
.nav button {
  display: flex; align-items: center; gap: 10px; width: 100%; padding: 6px 8px; border-radius: 8px;
  background: none; color: var(--text); font-size: 14px; font-weight: 400; text-align: start;
}
.nav button:hover { background: var(--fill); }
.nav button[aria-selected="true"] { background: var(--accent); color: #fff; }
.nav button[aria-selected="true"] .badge { background: rgba(255, 255, 255, .25); color: #fff; }
.nav .label { flex: 1; }
.ico {
  width: 24px; height: 24px; border-radius: 6px; display: grid; place-items: center; flex: none; color: #fff;
  box-shadow: inset 0 0 0 .5px rgba(0, 0, 0, .06);
}
.ico svg { width: 15px; height: 15px; }
.ico.red { background: linear-gradient(#ff6a60, #ff3b30); }
.ico.orange { background: linear-gradient(#ffad33, #ff9500); }
.ico.yellow { background: linear-gradient(#ffd84d, #ffc300); }
.ico.green { background: linear-gradient(#5ad87a, #30c552); }
.ico.teal { background: linear-gradient(#55c8dc, #2aa7bd); }
.ico.blue { background: linear-gradient(#3d9bff, #007aff); }
.ico.indigo { background: linear-gradient(#7c7aea, #5856d6); }
.ico.purple { background: linear-gradient(#c77ef0, #a645dc); }
.ico.pink { background: linear-gradient(#ff5c7c, #ff2d55); }
.ico.gray { background: linear-gradient(#a2a2a8, #8e8e93); }
.side-status { margin-top: auto; display: grid; gap: 8px; }
.side-card { background: var(--card); border-radius: 10px; padding: 10px 12px; font-size: 13px; box-shadow: var(--shadow); }
.side-card b { display: block; font-size: 13px; }

main { padding: 26px 32px 64px; min-width: 0; }
.page { max-width: 1000px; margin: 0 auto; display: grid; gap: 16px; }
.page > *, .grid2 > * { min-width: 0; }
.page-head { display: flex; align-items: flex-end; gap: 14px; flex-wrap: wrap; margin-bottom: 2px; }
.page-head h1 { flex: 1; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }

@media (max-width: 860px) {
  .app { display: block; }
  .sidebar {
    height: auto; position: sticky; top: 0; z-index: 10; padding: 10px 16px 8px; gap: 8px;
    border-inline-end: 0; border-bottom: .5px solid var(--line);
    background: var(--bar); -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  }
  .nav { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; margin: 0 -16px; padding: 0 16px; }
  .nav::-webkit-scrollbar { display: none; }
  .nav button { width: auto; white-space: nowrap; padding: 5px 10px 5px 8px; border-radius: 999px; font-size: 13px; }
  .nav .ico { width: 20px; height: 20px; border-radius: 5px; }
  .nav .ico svg { width: 13px; height: 13px; }
  .side-status { margin: 0; }
  .side-card { padding: 7px 10px; }
  main { padding: 18px 16px 56px; }
  h1 { font-size: 26px; }
}

/* --- grouped boxes and lists --- */

.card { background: var(--card); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); }
.list { padding: 0; overflow: hidden; }
.row { display: flex; align-items: center; gap: 12px; min-height: 46px; padding: 10px 16px; position: relative; }
.list > .row + .row::before, .list > .row-sep + .row::before {
  content: ""; position: absolute; top: 0; inset-inline-start: 16px; inset-inline-end: 0;
  border-top: .5px solid var(--line);
}
.list > .row.with-ico + .row::before, .list > .row + .row.with-ico::before { inset-inline-start: 52px; }
.row .grow { flex: 1; min-width: 0; }
.row .title { font-size: 15px; }
.row .sub { font-size: 13px; color: var(--muted); margin-top: 1px; overflow-wrap: anywhere; }
.row .end { margin-inline-start: auto; display: flex; align-items: center; gap: 8px; flex: none; }
.row .value { color: var(--muted); text-align: end; }
label.row { cursor: pointer; }
.row.tappable { cursor: pointer; }
.row.tappable:hover { background: var(--fill); }
.section-title { font-size: 13px; color: var(--muted); font-weight: 400; margin: 10px 16px -10px; }
.section-foot { font-size: 13px; color: var(--muted); margin: -8px 16px 0; }
.section-foot p { margin: 0 0 4px; }

/* --- controls --- */

button, select, input, textarea { font: inherit; color: inherit; }
button {
  border: 0; border-radius: 8px; background: var(--fill); color: var(--accent-ink);
  padding: 7px 14px; font-size: 14px; font-weight: 500; cursor: pointer; line-height: 1.3;
  transition: background .15s, opacity .15s, transform .1s;
}
button:hover { background: var(--fill-2); }
button:active { transform: scale(.98); opacity: .8; }
button.primary { background: var(--accent); color: var(--accent-text); }
button.primary:hover { background: color-mix(in srgb, var(--accent) 88%, #000); }
button.danger { color: var(--red-ink); }
button.plain { background: none; padding-inline: 6px; }
button.plain:hover { background: var(--fill); }
button.small { padding: 4px 10px; font-size: 13px; border-radius: 7px; }
button.pill { border-radius: 999px; padding: 8px 18px; }
button:disabled { opacity: .38; cursor: default; transform: none; }
button.on { background: var(--red); color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 14px; }
.actions:first-child { margin-top: 0; }

select, input[type=text], input[type=number], input[type=time], input[type=date], input[type=tel],
input[type=password], input[type=search], textarea {
  border: 0; border-radius: 8px; background: var(--fill); color: var(--text);
  padding: 7px 10px; min-width: 0; font-size: 14px;
}
input::placeholder, textarea::placeholder { color: var(--faint); }
select:focus, input:focus, textarea:focus { outline: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 40%, transparent); }
select {
  -webkit-appearance: none; appearance: none; cursor: pointer; padding-inline-end: 28px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='14' viewBox='0 0 10 14'%3E%3Cpath d='M2 5.2l3-3 3 3M2 8.8l3 3 3-3' fill='none' stroke='%238e8e93' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center;
}
[dir="rtl"] select { background-position: left 10px center; }
select option { background: var(--card); color: var(--text); }
input[type=number] { width: 84px; text-align: center; font-variant-numeric: tabular-nums; }
input[type=time], input[type=date] { font-variant-numeric: tabular-nums; }
textarea { width: 100%; font: 13px/1.45 var(--mono); padding: 10px 12px; resize: vertical; }
.unit { color: var(--muted); font-size: 13px; }

/* switches, drawn with backgrounds so every browser shows them */
input[type=checkbox] {
  -webkit-appearance: none; appearance: none; margin: 0; flex: none; cursor: pointer;
  width: 44px; height: 26px; border-radius: 13px; vertical-align: middle;
  background-color: var(--switch-off);
  background-image: radial-gradient(circle closest-side, #fff 92%, rgba(255, 255, 255, 0) 100%),
                    radial-gradient(circle closest-side, rgba(0, 0, 0, .2), rgba(0, 0, 0, 0));
  background-size: 22px 22px, 26px 26px;
  background-repeat: no-repeat;
  background-position: 2px 2px, 0 1px;
  transition: background-position .22s cubic-bezier(.3, .7, .4, 1), background-color .22s;
}
input[type=checkbox]:checked { background-color: var(--green); background-position: calc(100% - 2px) 2px, 100% 1px; }
[dir="rtl"] input[type=checkbox] { background-position: calc(100% - 2px) 2px, 100% 1px; }
[dir="rtl"] input[type=checkbox]:checked { background-position: 2px 2px, 0 1px; }
input[type=checkbox]:disabled { opacity: .4; cursor: default; }
/* a round tick for choosing items in a list, as in iOS */
input[type=checkbox].pick, [dir="rtl"] input[type=checkbox].pick {
  width: 22px; height: 22px; border-radius: 50%; background: none; box-shadow: inset 0 0 0 1.5px var(--faint);
}
input[type=checkbox].pick:checked, [dir="rtl"] input[type=checkbox].pick:checked {
  box-shadow: none; background: var(--accent) no-repeat center / 16px
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3.2 3.2L15 6.6' fill='none' stroke='white' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}
input[type=radio] {
  -webkit-appearance: none; appearance: none; margin: 0; flex: none; cursor: pointer;
  width: 18px; height: 18px; border-radius: 50%; box-shadow: inset 0 0 0 1.5px var(--faint); background: var(--card);
}
input[type=radio]:checked { box-shadow: none; background: radial-gradient(circle, #fff 0 3.5px, var(--accent) 4.5px); }

/* a segmented control */
.segmented { display: inline-flex; background: var(--fill); border-radius: 9px; padding: 2px; gap: 2px; flex-wrap: wrap; }
.segmented button {
  background: none; color: var(--text); font-weight: 500; font-size: 13px; padding: 5px 12px; border-radius: 7px;
}
.segmented button:hover { background: var(--fill); }
.segmented button[aria-pressed="true"], .segmented button[aria-selected="true"] {
  background: var(--card); box-shadow: 0 1px 3px rgba(0, 0, 0, .12), 0 0 0 .5px rgba(0, 0, 0, .04);
}
@media (prefers-color-scheme: dark) {
  .segmented button[aria-pressed="true"], .segmented button[aria-selected="true"] { background: #636366; }
}

/* --- status --- */

.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--faint); vertical-align: middle; flex: none; }
.dot.live { background: var(--red); animation: pulse 1.6s infinite; }
.dot.ok { background: var(--green); }
.dot.warn { background: var(--orange); }
@keyframes pulse { 50% { opacity: .3; } }
.badge {
  display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: color-mix(in srgb, var(--orange) 18%, transparent); color: var(--orange-ink);
}
.pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px;
  font-size: 13px; font-weight: 600; background: var(--fill); color: var(--muted); white-space: nowrap;
}
.pill.red { background: var(--red); color: #fff; }
.pill.red::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #fff; animation: pulse 1.6s infinite; }
.pill.orange { background: color-mix(in srgb, var(--orange) 18%, transparent); color: var(--orange-ink); }
.pill.green { background: color-mix(in srgb, var(--green) 18%, transparent); color: var(--green-ink); }
.pill.blue { background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent-ink); }
.banner {
  display: flex; gap: 10px; align-items: flex-start; border-radius: 10px; padding: 10px 12px; font-size: 14px;
  background: color-mix(in srgb, var(--orange) 14%, var(--card)); margin-top: 10px;
}
.banner svg { width: 18px; height: 18px; flex: none; margin-top: 1px; color: var(--orange); }
.banner.err { background: color-mix(in srgb, var(--red) 12%, var(--card)); }
.banner.err svg { color: var(--red); }
.banner.ok { background: color-mix(in srgb, var(--green) 13%, var(--card)); }
.banner.ok svg { color: var(--green); }
.meter { width: 120px; height: 6px; background: var(--fill-2); border-radius: 3px; overflow: hidden; display: inline-block; vertical-align: middle; }
.meter > i { display: block; height: 100%; background: var(--green); width: 0; border-radius: 3px; transition: width .2s; }
.bar { height: 6px; background: var(--fill-2); border-radius: 3px; overflow: hidden; margin: 6px 0 4px; }
.bar i { display: block; height: 100%; background: var(--accent); border-radius: 3px; transition: width .5s; }
.bar.busy i { width: 30% !important; animation: busy 1.4s ease-in-out infinite; }
@keyframes busy { from { margin-inline-start: -30%; } to { margin-inline-start: 100%; } }
.error { color: var(--red-ink); white-space: pre-wrap; }
.okmsg { color: var(--green-ink); }
.empty { color: var(--muted); padding: 14px 16px; font-size: 14px; }

/* --- tables --- */

.table-wrap { overflow-x: auto; margin: 0 -18px; padding: 0 18px; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: start; padding: 6px 6px; border-bottom: .5px solid var(--line); vertical-align: middle; }
th { font-weight: 500; font-size: 12px; color: var(--muted); white-space: nowrap; padding-top: 0; }
tbody tr:last-child td { border-bottom: 0; }
td input[type=text], td select { width: 100%; }

/* --- a translucent bar at the bottom, for saving --- */

.savebar {
  position: sticky; bottom: 12px; z-index: 5; display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  padding: 10px 12px; border-radius: 14px; background: var(--bar);
  -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  box-shadow: 0 0 0 .5px var(--line), 0 6px 24px rgba(0, 0, 0, .1);
}

/* --- an alert, as on iOS --- */

dialog.alert {
  border: 0; padding: 0; width: min(300px, calc(100vw - 48px)); border-radius: 14px; color: var(--text);
  background: var(--alert); -webkit-backdrop-filter: saturate(180%) blur(30px); backdrop-filter: saturate(180%) blur(30px);
  text-align: center; box-shadow: 0 12px 40px rgba(0, 0, 0, .22);
}
dialog.alert::backdrop { background: rgba(0, 0, 0, .28); }
dialog.alert[open] { animation: pop .18s ease-out; }
@keyframes pop { from { transform: scale(1.08); opacity: 0; } }
dialog.alert .body { padding: 18px 16px 16px; }
dialog.alert h3 { font-size: 16px; margin-bottom: 4px; }
dialog.alert p { font-size: 13px; margin: 0; }
dialog.alert .buttons { display: flex; border-top: .5px solid var(--line); }
dialog.alert .buttons button { flex: 1; border-radius: 0; background: none; padding: 11px 8px; font-size: 16px; color: var(--accent-ink); }
dialog.alert .buttons button:hover { background: var(--fill); }
dialog.alert .buttons button + button { border-inline-start: .5px solid var(--line); }
dialog.alert .buttons .default { font-weight: 600; }
dialog.alert .buttons .danger { color: var(--red-ink); }

/* a short note at the bottom, as macOS shows one */
.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%) translateY(8px); z-index: 50;
  background: var(--alert); -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  box-shadow: 0 0 0 .5px var(--line), 0 8px 28px rgba(0, 0, 0, .18); border-radius: 999px;
  padding: 8px 16px; font-size: 14px; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
}
.toast.show { opacity: 1; transform: translateX(-50%); }
.toast.bad { color: var(--red-ink); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* the transcript lines a roll call alarm rests on */
.evidence { background: var(--fill); border-radius: 10px; padding: 8px 12px; display: grid; gap: 4px; max-height: 260px; overflow: auto; }
.evidence b { color: var(--text); }