:root {
	--bg: #f7f8fb;
	--surface: #ffffff;
	--text: #1b1f24;
	--muted: #5f6b7a;
	--border: #d7dde6;
	--primary: #2563eb;
	--primary-hover: #1d4ed8;
	--danger: #dc2626;
	--danger-hover: #b91c1c;
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	background: var(--bg);
	color: var(--text);
}

h1,
h2,
h3,
p {
	margin: 0;
}

header,
main {
	max-width: 1100px;
	margin: 0 auto;
	padding: 1rem;
}

header {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 1rem;
	align-items: start;
}

header h1 {
	grid-column: 1 / -1;
	margin-bottom: 0.25rem;
}

#task-creation,
#project-creation,
#select-project,
#task-list {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 10px;
	padding: 1rem;
}

#task-creation,
#project-creation {
	display: grid;
	gap: 0.65rem;
}

input,
textarea,
select,
button {
	font: inherit;
}

input,
textarea,
select {
	width: 100%;
	padding: 0.55rem 0.65rem;
	border: 1px solid var(--border);
	border-radius: 8px;
	background: #fff;
}

textarea {
	resize: vertical;
	min-height: 72px;
}

button {
	border: 0;
	border-radius: 8px;
	padding: 0.55rem 0.8rem;
	cursor: pointer;
	font-weight: 600;
	color: #fff;
	background: var(--primary);
}

button:hover {
	background: var(--primary-hover);
}

main {
	display: grid;
	grid-template-columns: 240px 1fr;
	gap: 1rem;
	align-items: start;
}

#project-list,
#tasks {
	list-style: none;
	padding: 0;
	margin: 0.75rem 0 0 0;
}

.project-selection {
	padding: 0.45rem 0.55rem;
	border-radius: 6px;
	cursor: pointer;
	color: var(--muted);
}

.project-selection:hover {
	background: #eef3ff;
	color: var(--text);
}

#tasks {
	display: grid;
	gap: 0.75rem;
}

.task {
	padding: 0.85rem;
	border: 1px solid var(--border);
	border-radius: 10px;
	background: #fff;
	display: grid;
	gap: 0.45rem;
}

.task h3 {
	font-size: 1.05rem;
}

.task p {
	color: var(--muted);
}

.task .task-checklist {
	margin: 0.2rem 0;
	padding-left: 1.1rem;
}

.task textarea.task-checklist {
	padding-left: 0.65rem;
}

.task button {
	width: fit-content;
	margin-top: 0.25rem;
}

.task .task-delete {
	background: var(--danger);
}

.task .task-delete:hover {
	background: var(--danger-hover);
}

@media (max-width: 860px) {
	header,
	main {
		grid-template-columns: 1fr;
	}
}