:root {
	--bg: #0f0f10;
	--fg: #f4f4f4;
	--muted: #cfcfcf;
	--card: #171719;
	--border: #2a2a2d;
	--accent: #ffffff;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
	margin: 0;
	background: var(--bg);
	color: var(--fg);
	font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
}

.topbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 12px 16px;
	border-bottom: 1px solid var(--border);
	position: sticky; top: 0; background: var(--bg); z-index: 10;
}
.brand { font-weight: 700; letter-spacing: 0.5px; }
.nav { display:flex; flex-wrap: wrap; gap: 8px; }
.nav button, button {
	background: #111;
	color: var(--fg);
	border: 1px solid var(--border);
	padding: 8px 12px;
	border-radius: 8px;
	cursor: pointer;
}

.container { max-width: 980px; margin: 24px auto; padding: 0 16px; }

.card {
	background: var(--card);
	border: 1px solid var(--border);
	border-radius: 12px;
	padding: 16px;
}

/* add spacing between sibling cards */
.tabs > .tab > .card { margin-top: 16px; }
.tabs > .tab > .card:first-of-type { margin-top: 0; }

/* dashboard grid */
.grid-dash { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }

.stack { display: grid; gap: 8px; }
.row {
	display: flex;
	gap: 8px;
	grid-template-columns: repeat(6, 1fr);
	align-items: center;
}
.row.bill-form-grid {
	grid-template-columns: 1.5fr 1.5fr 2fr 1fr 60px auto;
}
.row input, .row select, .row button { width: 100%; }

.row.rent-filter { justify-content: flex-end; margin-top: 16px; }
.row.rent-filter select { width: auto; }

.grid-2 { display: grid; gap: 16px; grid-template-columns: repeat(2, 1fr); }

input, select, textarea, button {
	background: #0b0b0c;
	color: var(--fg);
	border: 1px solid var(--border);
	padding: 10px 12px;
	border-radius: 8px;
}

h1, h2, h3 { margin: 8px 0 12px; }

.list { list-style: none; padding: 0; margin: 12px 0 0; }
.list li { display: flex; justify-content: space-between; align-items: center; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; margin-bottom: 8px; background: #111; }
/* left block (title + meta) with spacing */
.list li > span:first-child { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.list .meta { color: var(--muted); font-size: 0.9em; }

.checkbox { display: inline-flex; align-items: center; gap: 6px; }

/* Toggle switch */
.toggle-switch {
	position: relative;
	display: inline-block;
	width: 34px;
	height: 20px;
	vertical-align: middle;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-switch .checkbox {
	position: absolute;
	cursor: pointer;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background-color: var(--border);
	-webkit-transition: .2s;
	transition: .2s;
	border-radius: 20px;
}
.toggle-switch .checkbox:before {
	position: absolute;
	content: "";
	height: 12px;
	width: 12px;
	left: 4px;
	bottom: 4px;
	background-color: var(--fg);
	-webkit-transition: .2s;
	transition: .2s;
	border-radius: 50%;
}
input:checked + .checkbox { background-color: var(--accent); }
input:focus + .checkbox { box-shadow: 0 0 0 2px var(--accent); }
input:checked + .checkbox:before { -webkit-transform: translateX(14px); -ms-transform: translateX(14px); transform: translateX(14px); }

.msg { color: var(--muted); min-height: 1em; }

/* Log section */
#logList pre { white-space: pre-wrap; word-break: break-word; font-size: 0.8em; color: var(--muted); margin-top: 4px; padding-left: 16px; }

.log-filters { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.log-filters select { flex: 1; min-width: 150px; }

/* calendar */
.cal-head { display:flex; align-items:center; justify-content: space-between; margin-bottom: 8px; }
.cal-head #calTitle, .cal-head #billCalTitle { font-weight: 600; letter-spacing: 0.3px; text-transform: capitalize; }
.cal-weekdays { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; margin-bottom: 8px; }
.cal-weekdays > div { text-align: center; font-size: 0.8em; color: var(--muted); }
.cal-grid { display:grid; grid-template-columns: repeat(7, 1fr); gap: 8px; }
.cal-day { border: 1px solid var(--border); border-radius: 10px; min-height: 90px; padding: 8px; background:#111; display:flex; flex-direction: column; }
.cal-day .d { color: var(--muted); font-size: 12px; margin-bottom: 6px; }
.cal-day .items { display: grid; gap: 4px; }
.cal-day .badge { display:inline-block; padding: 2px 6px; background:#222; border:1px solid #2d2d30; border-radius:8px; font-size: 12px; }
.cal-day.muted { opacity: 0.5; }
.cal-day.today { border-color: var(--accent); }

/* stats KPI */
.kpis { display:grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 16px; }
.kpi { background:#111; border:1px solid var(--border); border-radius:12px; padding:12px; }
.kpi-label { color: var(--muted); font-size: 12px; }
.kpi-value { font-size: 22px; font-weight: 700; }
.kpi-sub { color: var(--muted); font-size: 12px; }

.tabs { display: block; }
.tab[hidden] { display: none; }

@media (max-width: 720px) {
	.container { padding: 0 12px; }
	.grid-2 { grid-template-columns: 1fr; }
	.row { grid-template-columns: 1fr; }
	.grid-dash { grid-template-columns: 1fr; }
	.cal-grid { grid-template-columns: repeat(2, 1fr); /* Keep 2 columns on mobile */ }
	.cal-weekdays { grid-template-columns: repeat(2, 1fr); /* Keep 2 columns on mobile */ }
	.cal-day { min-height: 80px; /* Slightly increase min-height */ padding: 6px; }
	.cal-day .badge { font-size: 10px; padding: 1px 4px; }
	.cal-day .d { font-size: 10px; }
	.cal-day .items { flex-wrap: wrap; }
	.kpis { grid-template-columns: 1fr; }
	.topbar { padding: 8px 10px; }
	.card { padding: 10px; }
	button, .nav button { padding: 6px 8px; font-size: 0.85em; }
	.row { flex-wrap: wrap; }
	.row.bill-form-grid { grid-template-columns: 1fr; }
	.row.rent-filter { margin-top: 10px; }
	.log-filters { flex-direction: column; gap: 10px; margin-bottom: 12px; }
	.log-filters select { width: 100%; }
}