:root {
	color-scheme: dark;
	--bg: #0b0c0f;
	--surface: #111318;
	--surface-2: #181b22;
	--surface-3: #20242d;
	--border: rgba(255, 255, 255, 0.12);
	--border-strong: rgba(255, 255, 255, 0.24);
	--text: #f6f7f9;
	--muted: #a8b0bd;
	--input: #08090c;
	--accent: #e11d2e;
	--accent-strong: #ff3345;
	--accent-ring: rgba(225, 29, 46, 0.28);
	--success: #22a66a;
	--danger: #ff6b62;
	--danger-bg: rgba(255, 107, 98, 0.1);
	--shadow: 0 18px 46px rgba(0, 0, 0, 0.34);
}

:root[data-theme="light"] {
	color-scheme: light;
	--bg: #f5f7fa;
	--surface: #ffffff;
	--surface-2: #f1f4f8;
	--surface-3: #e8edf4;
	--border: #d8dee8;
	--border-strong: #c2cbd7;
	--text: #111827;
	--muted: #657287;
	--input: #ffffff;
	--accent: #d32f2f;
	--accent-strong: #b91c1c;
	--accent-ring: rgba(211, 47, 47, 0.18);
	--success: #0f7a53;
	--danger: #b42318;
	--danger-bg: #fff3f2;
	--shadow: 0 14px 34px rgba(15, 23, 42, 0.09);
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	background:
		linear-gradient(180deg, rgba(225, 29, 46, 0.08) 0, transparent 240px),
		var(--bg);
	color: var(--text);
	font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	font-size: 14px;
	line-height: 1.45;
}

button,
input,
select {
	font: inherit;
}

button {
	min-height: 36px;
	border: 1px solid var(--border);
	border-radius: 7px;
	background: var(--surface-2);
	color: var(--text);
	cursor: pointer;
	font-weight: 700;
	padding: 0 12px;
}

button:hover:not(:disabled) {
	border-color: var(--border-strong);
	background: var(--surface-3);
}

button.primary {
	border-color: var(--accent);
	background: var(--accent);
	color: #ffffff;
}

button.primary:hover:not(:disabled) {
	border-color: var(--accent-strong);
	background: var(--accent-strong);
}

button.danger {
	border-color: rgba(255, 107, 98, 0.36);
	background: var(--danger-bg);
	color: var(--danger);
}

button.icon {
	width: 36px;
	padding: 0;
}

button:disabled {
	cursor: not-allowed;
	opacity: 0.55;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
	outline: 3px solid var(--accent-ring);
	outline-offset: 2px;
}

input,
select {
	width: 100%;
	min-height: 36px;
	border: 1px solid var(--border);
	border-radius: 7px;
	background: var(--input);
	color: var(--text);
	padding: 8px 10px;
}

label {
	display: grid;
	gap: 5px;
	color: var(--muted);
	font-weight: 650;
}

code {
	font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.app-shell {
	min-height: 100vh;
}

.login {
	display: grid;
	place-items: center;
	min-height: 100vh;
	padding: 24px;
}

.login form {
	width: min(440px, 100%);
	display: grid;
	gap: 18px;
	padding: 30px;
	background: var(--surface);
	border: 1px solid var(--border);
	border-top: 4px solid var(--accent);
	border-radius: 8px;
	box-shadow: var(--shadow);
}

.login-brand,
.brand,
.topbar,
.panel-header,
.view-header,
.form-actions,
.row-actions,
.topbar-actions {
	display: flex;
	align-items: center;
}

.login-brand,
.brand {
	gap: 12px;
}

.login-brand h1,
.view-header h1,
.panel h2 {
	margin: 0;
	letter-spacing: 0;
}

.login-brand span {
	color: var(--muted);
	font-weight: 700;
}

.brand-mark {
	width: 52px;
	height: 52px;
	display: grid;
	place-items: center;
	border-radius: 8px;
	background: #111827;
	border: 1px solid rgba(255, 255, 255, 0.12);
	color: #ffffff;
	font-weight: 900;
}

.brand-mark.small {
	width: 36px;
	height: 36px;
	font-size: 12px;
}

.layout {
	min-height: 100vh;
	display: grid;
	grid-template-columns: 260px 1fr;
}

.sidebar {
	position: sticky;
	top: 0;
	height: 100vh;
	padding: 18px;
	background: rgba(8, 9, 12, 0.88);
	border-right: 1px solid var(--border);
}

:root[data-theme="light"] .sidebar {
	background: #ffffff;
}

.brand {
	margin-bottom: 24px;
	color: var(--text);
}

.nav {
	display: grid;
	gap: 8px;
}

.nav button {
	width: 100%;
	justify-content: flex-start;
	text-align: left;
}

.nav button.active {
	border-color: var(--accent);
	background: rgba(225, 29, 46, 0.12);
	color: var(--accent-strong);
}

.content {
	min-width: 0;
	padding: 18px 22px 34px;
}

.topbar {
	justify-content: space-between;
	gap: 16px;
	margin-bottom: 22px;
	padding: 12px 0;
}

.topbar-user {
	display: grid;
	gap: 2px;
}

.role-label {
	color: var(--muted);
	font-size: 12px;
	font-weight: 800;
	text-transform: uppercase;
}

.topbar-actions,
.form-actions,
.row-actions {
	gap: 8px;
}

.theme-select {
	width: 128px;
}

.view {
	display: grid;
	gap: 18px;
}

.metric-grid {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 12px;
}

.metric {
	min-height: 76px;
	display: grid;
	align-content: center;
	gap: 4px;
	padding: 14px;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 8px;
}

.metric span {
	color: var(--muted);
	font-size: 12px;
	font-weight: 800;
	text-transform: uppercase;
}

.metric strong {
	font-size: 22px;
	letter-spacing: 0;
}

.panel {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 8px;
	padding: 18px;
	box-shadow: var(--shadow);
}

.panel-header,
.view-header {
	justify-content: space-between;
	gap: 12px;
}

.form-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 14px;
}

.form-grid .panel-header,
.form-grid .wide {
	grid-column: 1 / -1;
}

.inline-form {
	display: grid;
	grid-template-columns: 1fr auto;
	gap: 12px;
	align-items: end;
}

.sessions-filter {
	display: grid;
	grid-template-columns: 150px minmax(180px, 1fr) minmax(220px, 1fr) 110px auto;
	gap: 12px;
	align-items: end;
}

.sessions-filter-actions {
	padding-bottom: 0;
}

.sessions-grid {
	display: grid;
	grid-template-columns: minmax(0, 1.35fr) minmax(360px, 0.85fr);
	gap: 18px;
	align-items: start;
}

.session-detail {
	display: grid;
	gap: 16px;
	position: sticky;
	top: 18px;
}

.empty-detail {
	min-height: 220px;
	align-content: start;
}

.detail-metrics {
	grid-template-columns: repeat(2, minmax(0, 1fr));
}

.chart-panel {
	min-height: 260px;
	display: grid;
	align-items: center;
	overflow: hidden;
	border: 1px solid var(--border);
	border-radius: 8px;
	background: var(--surface-2);
}

.chart-empty {
	padding: 44px 16px;
	color: var(--muted);
	text-align: center;
	font-weight: 700;
}

.hr-chart {
	width: 100%;
	height: auto;
	display: block;
}

.chart-axis {
	stroke: var(--border-strong);
	stroke-width: 1;
}

.chart-grid {
	stroke: var(--border);
	stroke-width: 1;
}

.chart-area {
	fill: var(--accent-ring);
}

.chart-line {
	fill: none;
	stroke: var(--accent-strong);
	stroke-width: 3;
	stroke-linecap: round;
	stroke-linejoin: round;
}

.chart-dot {
	fill: var(--surface);
	stroke: var(--accent-strong);
	stroke-width: 2;
}

.chart-label {
	fill: var(--muted);
	font-size: 11px;
	font-weight: 700;
}

.checkbox {
	display: flex;
	align-items: center;
	gap: 8px;
	padding-top: 23px;
}

.checkbox input {
	width: auto;
	min-height: auto;
}

.table-wrap {
	overflow: auto;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 8px;
}

table {
	width: 100%;
	border-collapse: collapse;
	min-width: 760px;
}

th,
td {
	padding: 12px 14px;
	border-bottom: 1px solid var(--border);
	text-align: left;
	vertical-align: middle;
}

th {
	color: var(--muted);
	font-size: 12px;
	text-transform: uppercase;
}

tr:last-child td {
	border-bottom: 0;
}

.selected-row td {
	background: rgba(225, 29, 46, 0.08);
}

.status-pill {
	display: inline-flex;
	align-items: center;
	min-height: 26px;
	padding: 0 9px;
	border-radius: 999px;
	font-size: 12px;
	font-weight: 850;
}

.status-pill.active {
	background: rgba(34, 166, 106, 0.14);
	color: var(--success);
}

.status-pill.ended {
	background: var(--surface-3);
	color: var(--muted);
}

.status-pill.stale {
	background: var(--danger-bg);
	color: var(--danger);
}

.empty,
.muted {
	color: var(--muted);
}

.error {
	margin: 0;
	padding: 10px 12px;
	border: 1px solid rgba(255, 107, 98, 0.34);
	border-radius: 7px;
	background: var(--danger-bg);
	color: var(--danger);
	font-weight: 700;
}

.one-time {
	margin: 0;
	padding: 12px 14px;
	border: 1px solid rgba(34, 166, 106, 0.28);
	border-radius: 8px;
	background: rgba(34, 166, 106, 0.1);
	color: var(--text);
}

.modal-backdrop {
	position: fixed;
	inset: 0;
	display: grid;
	place-items: center;
	padding: 20px;
	background: rgba(0, 0, 0, 0.58);
}

.modal {
	width: min(460px, 100%);
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 8px;
	box-shadow: var(--shadow);
}

.modal-header,
.modal-body {
	padding: 16px;
}

.modal-header {
	display: flex;
	justify-content: space-between;
	border-bottom: 1px solid var(--border);
}

@media (max-width: 820px) {
	.layout {
		grid-template-columns: 1fr;
	}

	.sidebar {
		position: static;
		height: auto;
	}

	.nav {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}

	.topbar,
	.form-grid,
	.inline-form,
	.sessions-filter,
	.sessions-grid {
		grid-template-columns: 1fr;
	}

	.form-grid {
		display: grid;
	}

	.metric-grid,
	.detail-metrics {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.session-detail {
		position: static;
	}

	.topbar {
		align-items: stretch;
		flex-direction: column;
	}
}