:root {
	color-scheme: light dark;
	--bg: #ffffff;
	--fg: #0b0d12;
	--muted: #5b6472;
	--accent: #2f6df6;
	--border: #e4e7ec;
	--danger: #b42318;
	--radius: 10px;
	--space: 1rem;
	--font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: #0b0d12;
		--fg: #f4f6fa;
		--muted: #9aa4b2;
		--accent: #6f9bff;
		--border: #232833;
		--danger: #ff9a8f;
	}
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--fg);
	font-family: var(--font);
	line-height: 1.55;
	-webkit-font-smoothing: antialiased;
}

.shell {
	max-width: 42rem;
	margin: 0 auto;
	padding: calc(var(--space) * 3) var(--space);
}

h1 {
	margin: 0 0 0.5rem;
	font-size: clamp(1.6rem, 4vw, 2.25rem);
	letter-spacing: -0.02em;
}

.lede {
	margin: 0 0 0.75rem;
	font-size: 1.05rem;
}

.hint {
	margin: 0;
	color: var(--muted);
}

.btn {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.55rem 0.9rem;
	border: 1px solid transparent;
	border-radius: var(--radius);
	background: var(--accent);
	color: #fff;
	font: inherit;
	font-weight: 500;
	cursor: pointer;
}

.btn:hover {
	filter: brightness(1.05);
}

.btn-secondary {
	background: transparent;
	color: var(--fg);
	border-color: var(--border);
}

.card {
	padding: var(--space);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	background: var(--bg);
}

.input,
.select,
.textarea {
	width: 100%;
	padding: 0.55rem 0.7rem;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	background: var(--bg);
	color: var(--fg);
	font: inherit;
}

.field {
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	gap: 0.35rem;
	margin-bottom: var(--space);
}

.field > label {
	font-size: 0.875rem;
	color: var(--muted);
}

/*
 * 390px-safe, like .grid below. A grid with no column list gets one implicit
 * auto column, and an auto column is never narrower than its widest item's
 * min-content width. One nowrap scrolling strip (days, time slots) anywhere
 * inside an item therefore widened the whole column past the screen: the page
 * scrolled sideways instead of the strip scrolling on its own. minmax(0, 1fr)
 * caps the column at the container; the min-width rule keeps a child from
 * bringing the same floor back if an app redefines the columns. :where() adds
 * no specificity, so a min-width the app sets on a child still wins.
 */
.stack {
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	gap: var(--space);
}

:where(.field, .stack, .list) > * {
	min-width: 0;
}

.row {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	flex-wrap: wrap;
}

/*
 * 390px-safe. An unclamped minmax track overflows a 390px viewport once the
 * shell padding is subtracted, and nothing in the pipeline ever looked at a
 * phone-width layout, so every generated app inherited the horizontal scroll.
 * min() clamps the track to the container instead.
 */
.grid {
	display: grid;
	gap: var(--space);
	grid-template-columns: repeat(auto-fit, minmax(min(15rem, 100%), 1fr));
}

.list {
	display: grid;
	grid-template-columns: minmax(0, 1fr);
	gap: 0.5rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

.list-item {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 0.75rem;
	flex-wrap: wrap;
	padding: 0.7rem 0.85rem;
	border: 1px solid var(--border);
	border-radius: var(--radius);
}

.table {
	width: 100%;
	border-collapse: collapse;
}

.table th,
.table td {
	padding: 0.6rem 0.5rem;
	text-align: left;
	border-bottom: 1px solid var(--border);
}

.table th {
	font-size: 0.8125rem;
	color: var(--muted);
	font-weight: 600;
}

.empty {
	padding: calc(var(--space) * 2);
	text-align: center;
	color: var(--muted);
}

.empty-title {
	margin: 0 0 0.25rem;
	color: var(--fg);
	font-weight: 600;
}

/* Loading. Every fetch has one; without a primitive each app invented its own. */
.loading {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 0.6rem;
	padding: calc(var(--space) * 1.5);
	color: var(--muted);
}

.spinner {
	flex: none;
	width: 1.15rem;
	height: 1.15rem;
	border: 2px solid var(--border);
	border-top-color: var(--accent);
	border-radius: 50%;
	animation: fab-spin 0.7s linear infinite;
}

@keyframes fab-spin {
	to {
		transform: rotate(360deg);
	}
}

/* Placeholder for content whose shape is known before its data arrives. */
.skeleton {
	display: block;
	height: 1rem;
	border-radius: calc(var(--radius) / 2);
	background: linear-gradient(90deg, var(--border), transparent, var(--border));
	background-size: 200% 100%;
	animation: fab-shimmer 1.2s linear infinite;
}

@keyframes fab-shimmer {
	to {
		background-position: -200% 0;
	}
}

/* Error strip: a failure the user can see and retry, never a silent no-op. */
.alert {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 0.75rem;
	flex-wrap: wrap;
	padding: 0.7rem 0.85rem;
	border: 1px solid var(--border);
	border-left: 3px solid var(--muted);
	border-radius: var(--radius);
}

.alert-error {
	border-left-color: var(--danger);
	color: var(--danger);
}

.badge {
	display: inline-block;
	padding: 0.1rem 0.5rem;
	border: 1px solid var(--border);
	border-radius: 999px;
	font-size: 0.8125rem;
	color: var(--muted);
}

/*
 * The scaffold had exactly one @media rule (prefers-color-scheme) and no width
 * breakpoint at all, so the shell was a 42rem column at every size.
 * Mobile-first stays the default; these only widen it.
 */
@media (min-width: 48rem) {
	.shell {
		max-width: 52rem;
		padding: calc(var(--space) * 3) calc(var(--space) * 1.5);
	}
}

@media (min-width: 64rem) {
	.shell {
		max-width: 64rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	.spinner,
	.skeleton {
		animation: none;
	}
}

:root { color-scheme: light; --bg: #f6f3ee; --fg: #1d2330; --muted: #6b6f7a; --accent: #3d5a80; --border: #e3ddd3;
	--radius: 12px; --font: "Plus Jakarta Sans", system-ui, sans-serif; --side: #1f2a3c; }
@media (prefers-color-scheme: dark) { :root { --bg: #f6f3ee; --fg: #1d2330; --muted: #6b6f7a; --accent: #3d5a80; --border: #e3ddd3; } }
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 800; font-size: 1.15rem; }
.brand-mark { display: grid; place-items: center; width: 2rem; height: 2rem; border-radius: 9px; background: #e07a5f; color: #fff; }
.landing { min-height: 100vh; display: grid; gap: 2rem; padding: 2rem 1rem; max-width: 72rem; margin: 0 auto; align-items: center; }
@media (min-width: 56rem) { .landing { grid-template-columns: 1.2fr 1fr; padding: 3rem 2rem; } }
.landing h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin: 1rem 0 .5rem; }
.sample { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; margin-top: 1.5rem; }
.sample-head { font-weight: 700; margin-bottom: .5rem; }
.auth { background: #fff; display: grid; gap: .25rem; padding: 1.5rem; }
.tabs { display: flex; gap: .25rem; background: var(--bg); padding: .25rem; border-radius: 10px; margin-bottom: 1rem; }
.tabs button { flex: 1; border: 0; background: none; padding: .55rem; border-radius: 8px; font: inherit; font-weight: 600; cursor: pointer; color: var(--muted); }
.tabs button.on { background: #fff; color: var(--fg); box-shadow: 0 1px 3px #0002; }
.wide { width: 100%; justify-content: center; }
.small { font-size: .85rem; } .small-link { font-size: .85rem; color: var(--accent); } .pad { padding: .25rem .75rem; }
.avatar { flex: none; display: grid; place-items: center; width: 2.1rem; height: 2.1rem; border-radius: 9px; color: #fff; font-size: .75rem; font-weight: 700; }
.msg { display: flex; gap: .7rem; padding: .5rem .25rem; text-align: left; }
.msg-meta span { color: var(--muted); font-size: .78rem; margin-left: .3rem; }
.body { white-space: pre-wrap; word-break: break-word; }
.app { display: grid; height: 100vh; height: 100dvh; grid-template-columns: minmax(0, 1fr); }
.side { background: var(--side); color: #e8ecf3; display: flex; flex-direction: column; min-height: 0; padding: 1rem .75rem; gap: .75rem; }
.side .input { background: #ffffff14; border-color: #ffffff22; color: #fff; }
.side-top, .side-foot { display: flex; align-items: center; gap: .6rem; }
.side-top { justify-content: space-between; }
.side-foot { border-top: 1px solid #ffffff1a; padding-top: .75rem; }
.dot { width: .6rem; height: .6rem; border-radius: 50%; background: #999; } .dot.live { background: #5fd38d; }
.convs { flex: 1; overflow-y: auto; display: grid; align-content: start; gap: 2px; }
.sec { font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; opacity: .65; margin: .9rem .5rem .3rem; }
.between { justify-content: space-between; }
.conv { display: flex; align-items: center; gap: .6rem; width: 100%; border: 0; background: none; color: inherit; font: inherit;
	padding: .55rem .6rem; border-radius: 9px; cursor: pointer; text-align: left; }
.conv:hover { background: #ffffff12; } .conv.on { background: #e07a5f; color: #fff; }
.conv.has-unread .conv-name { font-weight: 700; color: #fff; }
.conv .avatar { width: 1.6rem; height: 1.6rem; font-size: .65rem; }
.hash { width: 1.6rem; text-align: center; opacity: .7; }
.conv-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.unread { background: #e07a5f; color: #fff; border-radius: 999px; font-size: .72rem; font-weight: 700; padding: .05rem .5rem; }
.conv.on .unread { background: #fff; color: #e07a5f; }
.picker { background: #ffffff0d; border-radius: 9px; padding: .25rem; }
.icon-btn { border: 0; background: none; color: inherit; font: inherit; font-size: 1.2rem; cursor: pointer; padding: .2rem .5rem; border-radius: 8px; }
.link-btn { border: 0; background: none; color: inherit; opacity: .75; font: inherit; font-size: .8rem; cursor: pointer; text-decoration: underline; }
.main { display: none; flex-direction: column; min-height: 0; background: var(--bg); }
.show-main .side { display: none; } .show-main .main { display: flex; }
.main-head { display: flex; align-items: center; gap: .5rem; padding: .75rem 1rem; border-bottom: 1px solid var(--border); background: #fff; flex-wrap: wrap; }
.main-head h2 { margin: 0; font-size: 1.1rem; }
.msgs { flex: 1; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; }
.result { border: 0; background: #fff; border-radius: 10px; margin-bottom: .5rem; font: inherit; color: inherit; cursor: pointer; padding: .7rem; }
.day { text-align: center; margin: .8rem 0; font-size: .75rem; color: var(--muted); }
.day span { background: var(--border); padding: .15rem .7rem; border-radius: 999px; }
.composer { display: flex; gap: .5rem; padding: .75rem; border-top: 1px solid var(--border); background: #fff; }
.composer textarea { resize: none; flex: 1; }
.welcome { flex: 1; display: grid; place-items: center; }
@media (min-width: 48rem) {
	.app { grid-template-columns: 17rem minmax(0, 1fr); }
	.show-main .side, .side { display: flex; } .main { display: flex; } .back { display: none; }
}
.overlay { position: fixed; inset: 0; background: #0007; display: grid; place-items: center; padding: 1rem; z-index: 10; }
.modal { background: #fff; width: min(30rem, 100%); max-height: 90vh; overflow-y: auto; display: grid; gap: .75rem; }
.modal h2 { margin: 0; } .grow { flex: 1; min-width: 10rem; } .code { font-weight: 700; letter-spacing: .1em; }
:where(a, button, input, select, textarea):focus-visible {
	outline: 2px solid var(--accent);
	outline-offset: 2px;
}