:root {
	--now: #e02424;
	--grid: rgba(20, 24, 33, 0.07);
	--grid-strong: rgba(20, 24, 33, 0.14);
	--bg: #f2f3f5;
	--surface: #ffffff;
	--ink: #1c1f24;
	--muted: #6b7280;
	--line: #d6d9df;
	--accent: #3b6ef5;
	--accent-soft: #e6ecfe;
	--ok: #1f8a4c;
	--warn: #b06a00;
	--danger: #c0392b;
	--edge: #9aa2b1;
	--shadow: 0 1px 2px rgba(20, 24, 33, 0.08), 0 6px 18px rgba(20, 24, 33, 0.07);
	color-scheme: light;
}

@media (prefers-color-scheme: dark) {
	:root {
		--now: #ff5a4f;
		--grid: rgba(255, 255, 255, 0.05);
		--grid-strong: rgba(255, 255, 255, 0.11);
		--bg: #14171c;
		--surface: #1c2027;
		--ink: #e7eaf0;
		--muted: #98a1b0;
		--line: #333a45;
		--accent: #6c9bff;
		--accent-soft: #24304d;
		--ok: #4cc180;
		--warn: #d99a3a;
		--danger: #e8705f;
		--edge: #5d6675;
		--shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
		color-scheme: dark;
	}
}

* {
	box-sizing: border-box;
}

html,
body {
	margin: 0;
	padding: 0;
	height: 100%;
	background: var(--bg);
	color: var(--ink);
	font-family: ui-sans-serif, system-ui, "Segoe UI", Roboto, Helvetica, sans-serif;
	/* Sizes follow the browser's base font size, not the phone's guesswork. */
	-webkit-text-size-adjust: 100%;
	text-size-adjust: 100%;
}

/* The workspace and permissions pages never scroll as a whole -- only their
   own scroll areas do. Nothing may widen the page: a phone would zoom the
   whole thing out to fit, leaving empty space right and below. */
:root:has(body.workspace-page),
:root:has(body.permissions-page) {
	overflow: hidden;
}

button {
	font: inherit;
	color: inherit;
	cursor: pointer;
}

/* ------------------------------------------------------------ login page */

.login-page {
	display: grid;
	place-items: center;
}

#login {
	width: min(22rem, 90vw);
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: 12px;
	padding: 1.6rem;
	box-shadow: var(--shadow);
	display: grid;
	gap: 0.9rem;
}

#login h1 {
	margin: 0 0 0.3rem;
	font-size: 1.3rem;
	font-weight: 600;
}

#login label {
	display: grid;
	gap: 0.3rem;
	font-size: 0.85rem;
	color: var(--muted);
}

#login input {
	font: inherit;
	padding: 0.5rem 0.6rem;
	border: 1px solid var(--line);
	border-radius: 7px;
	background: var(--bg);
	color: var(--ink);
}

#login input:focus {
	outline: 2px solid var(--accent);
	outline-offset: 1px;
}

#login button {
	padding: 0.55rem;
	border: 0;
	border-radius: 7px;
	background: var(--accent);
	color: #fff;
	font-weight: 600;
}

#login button:disabled {
	opacity: 0.6;
	cursor: default;
}

#login .hint,
#login #message {
	margin: 0;
	font-size: 0.8rem;
	color: var(--muted);
}

#login #message.error {
	color: var(--danger);
}

/* -------------------------------------------------------- workspace page */

.workspace-page {
	display: flex;
	flex-direction: column;
	overflow: hidden;
	width: 100%;
	height: 100vh;
	height: 100dvh; /* the visible height, with a phone's toolbars taken out */
}

#bar {
	flex: 0 0 auto;
	display: flex;
	flex-wrap: wrap; /* a second line on a narrow screen, rather than overflow */
	align-items: center;
	gap: 0.4rem 0.8rem;
	min-width: 0;
	zoom: var(--ui-scale, 1);
	padding: 0.5rem 0.9rem;
	background: var(--surface);
	border-bottom: 1px solid var(--line);
	font-size: 0.85rem;
	z-index: 5;
}

#brand {
	font-weight: 600;
}

#spacer {
	flex: 1;
}

#who {
	color: var(--muted);
}

#status.ok {
	color: var(--ok);
}
#status.error {
	color: var(--danger);
}
#status.info {
	color: var(--accent);
}

#logout {
	background: transparent;
	border: 1px solid var(--line);
	border-radius: 6px;
	padding: 0.25rem 0.6rem;
}

#viewport {
	flex: 1;
	min-height: 0; /* let it shrink to the space left, and scroll */
	overflow: auto;
	position: relative;
}

/* Everything drawn scales with the size control (app.js turns positions on
   screen back into drawing units by the same factor). */
#surface {
	position: relative;
	min-width: 100%;
	min-height: 100%;
	zoom: var(--ui-scale, 1);
}

#edges {
	position: absolute;
	inset: 0;
	overflow: visible;
	pointer-events: none;
}

/* ---------------------------------------------------------- the time axis */

/* The only element in normal flow inside #surface, so sticky pins it to the
   left edge while the drawing scrolls sideways under it. */
#ruler {
	position: sticky;
	left: 0;
	top: 0;
	width: 92px; /* RULER_W in app.js */
	background: var(--bg);
	border-right: 1px solid var(--line);
	z-index: 5;
	font-size: 0.6875rem;
	color: var(--muted);
}

#ruler .tick {
	position: absolute;
	left: 6px;
	right: 6px;
	transform: translateY(-50%);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	background: var(--bg);
	line-height: 1.3;
}

#ruler .tick.now {
	color: #fff;
	background: var(--now);
	border-radius: 4px;
	padding: 0 4px;
	font-weight: 600;
	z-index: 1;
}

#edges line.grid {
	stroke: var(--grid);
	stroke-width: 1;
}

#edges line.grid.major {
	stroke: var(--grid-strong);
}

#now-line {
	stroke: var(--now);
	stroke-width: 2;
}

#zoom,
#ui-size {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	color: var(--muted);
	font-variant-numeric: tabular-nums;
}

#zoom button,
#ui-size button {
	width: 1.6rem;
	height: 1.6rem;
	border: 1px solid var(--line);
	border-radius: 6px;
	background: transparent;
	line-height: 1;
	padding: 0;
}

#zoom button:hover,
#ui-size button:hover {
	border-color: var(--accent);
	color: var(--accent);
}

#zoom-label,
#ui-size-label {
	min-width: 4.5em;
	text-align: center;
}

#ui-size button {
	width: auto;
	padding: 0 0.35rem;
}

@media (max-width: 560px) {
	#brand,
	#who {
		display: none;
	}
}

#edges path.edge {
	fill: none;
	stroke: var(--edge);
	stroke-width: 2;
}

#edges path.edge.lit {
	stroke: var(--accent);
	stroke-width: 2.5;
}

#edges path.live {
	fill: none;
	stroke: var(--accent);
	stroke-width: 2;
	stroke-dasharray: 6 5;
	visibility: hidden;
}

#edges path.live.visible {
	visibility: visible;
}

#nodes {
	position: absolute;
	inset: 0;
}

#empty-hint {
	position: fixed;
	left: 50%;
	top: 45%;
	transform: translate(-50%, -50%);
	color: var(--muted);
	font-size: 0.9rem;
	pointer-events: none;
}

/* ------------------------------------------------------------ task boxes */

.task {
	position: absolute;
	top: 0;
	left: 0;
	/* As wide as the content needs, within these bounds; the layout measures
	   each box, so mixed widths line up the same as equal ones. */
	width: max-content;
	min-width: 8em;
	max-width: 16em;
	font-size: 0.875rem;
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: 10px;
	box-shadow: var(--shadow);
	overflow: visible;
}

.task .row {
	padding: 0.5em 0.7em;
	border-top: 1px solid var(--line);
	line-height: 1.4;
	overflow-wrap: anywhere;
}

.task .row:first-of-type {
	border-top: 0;
}

.task .row.title {
	font-weight: 600;
	font-size: 1.02em;
	border-radius: 9px 9px 0 0;
}

.task .row.description {
	white-space: pre-wrap;
	color: var(--muted);
	font-size: 0.92em;
}

.task .row.links {
	display: grid;
	gap: 0.25em;
	font-size: 0.88em;
}

.task .row.links a {
	color: var(--accent);
}

.task .row.deadline {
	display: flex;
	gap: 0.5em;
	align-items: baseline;
	font-size: 0.88em;
}

.task .row .label {
	color: var(--muted);
	text-transform: uppercase;
	font-size: 0.78em;
	letter-spacing: 0.04em;
}

.task .row.completion {
	display: flex;
	align-items: center;
	gap: 0.6em;
}

.task .row.completion .bar {
	flex: 1;
	min-width: 2.5em;
	height: 0.5em;
	border-radius: 4px;
	background: var(--bg);
	border: 1px solid var(--line);
	overflow: hidden;
}

.task .row.completion .bar i {
	display: block;
	height: 100%;
	background: var(--accent);
}

/* Finished: the bar turns green, on a card and in a form alike. */
.task.done .row.completion .bar i,
.task .row.completion.complete .bar i {
	background: var(--ok);
}

.task.editing .f-completion {
	accent-color: var(--accent);
}

.task.editing .row.completion.complete .f-completion {
	accent-color: var(--ok);
}

.task .row.completion .pct {
	font-variant-numeric: tabular-nums;
	color: var(--muted);
	font-size: 0.85em;
	min-width: 3em;
	text-align: right;
}

.task .row.people {
	display: flex;
	flex-wrap: wrap;
	gap: 0.3em;
}

.chip {
	display: inline-flex;
	align-items: center;
	gap: 0.3em;
	padding: 0.1em 0.45em;
	border-radius: 999px;
	background: var(--bg);
	border: 1px solid var(--line);
	font-size: 0.8em;
	color: var(--muted);
}

.chip.role-owner {
	border-color: var(--accent);
	color: var(--accent);
}


.task.done .row.title {
	text-decoration: line-through;
	text-decoration-color: var(--muted);
}

.task.overdue {
	border-color: var(--danger);
}

.task.overdue .row.deadline .value {
	color: var(--danger);
	font-weight: 600;
}

.task.soon .row.deadline .value {
	color: var(--warn);
	font-weight: 600;
}

.task.blocked {
	opacity: 0.6;
	border-style: dashed;
}

/* After .blocked on purpose: finished beats waiting, even when both apply. */
.task.done {
	opacity: 0.4;
}

/* --------------------------------------------------------------- corners */

.corners {
	position: absolute;
	top: -0.7em;
	left: -0.7em;
	right: -0.7em;
	display: flex;
	justify-content: space-between;
	pointer-events: none;
	z-index: 2;
}

.corner {
	pointer-events: auto;
	width: 1.7em;
	height: 1.7em;
	line-height: 1;
	border-radius: 50%;
	border: 1px solid var(--line);
	background: var(--surface);
	color: var(--muted);
	display: grid;
	place-items: center;
	box-shadow: var(--shadow);
	opacity: 0;
	transition: opacity 0.12s;
}

.task:hover .corner,
.task.editing .corner {
	opacity: 1;
}

.corners .corner:only-child {
	margin-left: auto;
}

.corner.submit {
	color: var(--ok);
	border-color: var(--ok);
	margin-left: auto;
}

.corner.scrap {
	color: var(--danger);
	border-color: var(--danger);
}

.corner:hover {
	background: var(--accent-soft);
}

/* ----------------------------------------------------------- form state */

.task.editing {
	/* A form keeps the full width: there has to be room to type. */
	width: 16em;
	border-color: var(--accent);
	box-shadow: 0 0 0 2px var(--accent-soft), var(--shadow);
	z-index: 3;
}

.task.editing.busy {
	opacity: 0.6;
	pointer-events: none;
}

.task.editing input,
.task.editing textarea,
.task.editing select {
	font: inherit;
	width: 100%;
	border: 0;
	padding: 0;
	background: transparent;
	color: inherit;
}

.task.editing textarea {
	resize: none;
	overflow: hidden;
	min-height: 2.6em;
	color: var(--muted);
	font-size: 0.92em;
}

.task.editing input:focus,
.task.editing textarea:focus {
	outline: 0;
}

.task.editing .row:focus-within {
	background: var(--accent-soft);
}

.task.editing .f-title {
	font-weight: 600;
}

.task.editing .row.deadline input {
	flex: 1;
	width: auto;
	min-width: 0;
}

.task.editing .row.deadline .f-deadline-time {
	flex: 0 0 5.5em;
}

.task .row.deadline {
	flex-wrap: wrap;
}

/* Inherited from what the task blocks, not set on it. */
.task .row.deadline.calculated .value {
	font-style: italic;
}

.task .row.deadline .hint {
	flex-basis: 100%;
	font-size: 0.85em;
	color: var(--muted);
	font-style: italic;
}

.task .row.estimate {
	display: flex;
	gap: 0.5em;
	align-items: baseline;
	font-size: 0.88em;
}

.task.editing .row.estimate .f-estimate {
	flex: 1;
	width: auto;
	min-width: 0;
}

.task .row.estimate .unit {
	color: var(--muted);
}

/* Lower than its dates alone would put it: moved to make room for an arrow. */
.task.moved-down {
	outline: 1px dotted var(--warn);
	outline-offset: 3px;
}

.task.editing .row.links {
	gap: 0.3em;
}

.link-list {
	display: grid;
	gap: 0.3em;
}

.link-row {
	display: grid;
	grid-template-columns: 1fr 5em auto;
	gap: 0.3em;
	align-items: center;
}

.link-row input {
	font-size: 0.88em;
	border-bottom: 1px dotted var(--line) !important;
}

.mini {
	border: 0;
	background: transparent;
	color: var(--muted);
	font-size: 0.85em;
	padding: 0 0.2em;
	line-height: 1;
}

.mini:hover {
	color: var(--danger);
}

.mini.add {
	justify-self: start;
	color: var(--accent);
}

.task .row.connections {
	display: grid;
	gap: 0.3em;
	font-size: 0.9em;
}

.connection-group {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.3em;
}

.chip.connection .chip-text {
	max-width: 9em;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.chip.connection.blocker {
	border-color: var(--warn);
}

.chip.connection.blocked {
	border-color: var(--ok);
}

.row.connections .hint {
	color: var(--muted);
	font-size: 0.85em;
}

.drag-handle {
	position: absolute;
	left: 50%;
	top: -1.5em;
	transform: translateX(-50%);
	padding: 0.1em 0.6em;
	border-radius: 6px;
	border: 1px solid var(--line);
	background: var(--surface);
	color: var(--muted);
	cursor: grab;
	font-size: 0.9em;
	touch-action: none;
	user-select: none;
}

.drag-handle:active {
	cursor: grabbing;
}

/* ------------------------------------------------------- connection ends */

.connector {
	position: absolute;
	left: 50%;
	transform: translateX(-50%);
	width: 1.5em;
	height: 1.5em;
	border-radius: 50%;
	border: 1px solid var(--accent);
	background: var(--surface);
	color: var(--accent);
	display: grid;
	place-items: center;
	line-height: 1;
	padding: 0;
	z-index: 2;
}

.connector.top {
	top: -0.75em;
}

.connector.bottom {
	bottom: -0.75em;
}

.task:not(.editing) .connector {
	display: none;
}

.terminator {
	position: absolute;
	left: 50%;
	transform: translateX(-50%);
	width: 1.6em;
	height: 1.6em;
	border-radius: 50%;
	border: 2px dashed var(--accent);
	background: var(--accent-soft);
	color: var(--accent);
	display: none;
	place-items: center;
	padding: 0;
	z-index: 4;
}

.terminator.top {
	top: -0.8em;
}

.terminator.bottom {
	bottom: -0.8em;
}

#surface.connecting-up .task:not(.connect-origin) .terminator.bottom,
#surface.connecting-down .task:not(.connect-origin) .terminator.top {
	display: grid;
}

#surface.connecting-up .task .connector,
#surface.connecting-down .task .connector {
	opacity: 0.35;
}

/* ------------------------------------------------------------------- plus */

.plus {
	position: absolute;
	top: 0;
	left: 0;
	width: 2.2rem;
	height: 2.2rem;
	margin: -1.1rem 0 0 -1.1rem;
	border-radius: 50%;
	border: 1px solid var(--accent);
	background: var(--surface);
	color: var(--accent);
	font-size: 1.1rem;
	line-height: 1;
	display: grid;
	place-items: center;
	box-shadow: var(--shadow);
	z-index: 6;
}

.plus:hover {
	background: var(--accent);
	color: #fff;
}

/* ------------------------------------------------------------ header bits */

#bar .nav {
	color: var(--muted);
	text-decoration: none;
	border-bottom: 1px solid transparent;
}

#bar .nav:hover {
	color: var(--accent);
	border-bottom-color: var(--accent);
}

#bar > * {
	white-space: nowrap;
}

#hidden-note {
	background: transparent;
	border: 1px dashed var(--line);
	border-radius: 999px;
	padding: 0.15rem 0.6rem;
	color: var(--muted);
	font-size: 0.8rem;
}

#hidden-note:hover {
	border-style: solid;
	color: var(--accent);
	border-color: var(--accent);
}

/* ------------------------------------------------- people on a task */

.chip .who {
	font-weight: 600;
	color: var(--ink);
}

.chip .what {
	opacity: 0.85;
}

.chip.role-owner {
	border-color: var(--accent);
}

.chip.role-owner .what {
	color: var(--accent);
}

.people-list {
	display: grid;
	gap: 0.3em;
	width: 100%;
}

.person-row {
	display: grid;
	grid-template-columns: 1fr 1fr auto;
	gap: 0.3em;
	align-items: center;
}

.person-row input {
	font-size: 0.88em;
	border-bottom: 1px dotted var(--line) !important;
}

.task.editing .row.people {
	display: grid;
	gap: 0.3em;
	justify-items: start;
}

/* ------------------------------------------------------- permissions page */

.permissions-page {
	display: flex;
	flex-direction: column;
	height: 100vh;
	height: 100dvh;
	overflow: hidden;
}

#sheet {
	flex: 1;
	min-height: 0;
	overflow: auto;
	zoom: var(--ui-scale, 1);
	padding: 1.5rem;
	display: grid;
	gap: 2rem;
	align-content: start;
	max-width: 52rem;
	width: 100%;
	margin: 0 auto;
}

#sheet h2 {
	margin: 0 0 0.3rem;
	font-size: 1rem;
	font-weight: 600;
}

#sheet .lede {
	margin: 0 0 0.9rem;
	color: var(--muted);
	font-size: 0.85rem;
	max-width: 42rem;
}

#sheet .empty {
	color: var(--muted);
	font-size: 0.88rem;
	margin: 0;
}

.grant {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 0.6rem;
	padding: 0.7rem 0.9rem;
	margin-bottom: 0.5rem;
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: 10px;
}

.grant-line {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.35rem;
	font-size: 0.9rem;
	line-height: 1.8;
}

.grant .level {
	font-weight: 600;
	color: var(--ok);
}

.grant .level.modify {
	color: var(--warn);
}

.grant-actions {
	display: flex;
	gap: 0.5rem;
	align-items: center;
}

.grant-actions .mini {
	font-size: 0.82rem;
}

.grant.editor {
	border-color: var(--accent);
	box-shadow: 0 0 0 2px var(--accent-soft);
	display: grid;
	justify-items: start;
}

.grant.editor input[type="text"],
.grant.editor .grant-user,
.grant.editor select {
	font: inherit;
	font-size: 0.9rem;
	padding: 0.25rem 0.4rem;
	border: 1px solid var(--line);
	border-radius: 6px;
	background: var(--bg);
	color: var(--ink);
}

.grant.editor .phrase {
	color: var(--muted);
	font-size: 0.9rem;
}

.role-choices {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
}

.role-choice {
	display: inline-flex;
	align-items: center;
	gap: 0.3rem;
	cursor: pointer;
}

.grant.editor .grant-actions {
	justify-self: end;
}

.grant.editor button[type="submit"] {
	padding: 0.3rem 0.9rem;
	border: 0;
	border-radius: 6px;
	background: var(--accent);
	color: #fff;
	font-weight: 600;
	font-size: 0.85rem;
}

.add-grant {
	background: transparent;
	border: 1px dashed var(--line);
	border-radius: 8px;
	padding: 0.45rem 0.9rem;
	color: var(--accent);
	font-size: 0.85rem;
}

.add-grant:hover {
	border-style: solid;
	border-color: var(--accent);
}