/*
 * Front-end styling for [spm_scheduler]. Uses CSS custom properties for
 * theming (no build step) and a colorblind-safe heatmap that never relies
 * on hue alone — each cell also carries a numeric count and a text
 * aria-label, and the "available" scale runs light-to-dark (perceivable as
 * a gradient even in grayscale) rather than red-to-green.
 */

.spms-app {
	--spms-primary: #2c5f8a;
	--spms-primary-contrast: #ffffff;
	--spms-border: #d7dde3;
	--spms-text: #1d2327;
	--spms-muted: #5c6570;
	--spms-bg: #ffffff;
	--spms-bg-alt: #f6f8fa;
	--spms-focus: #0a5fff;
	--spms-heat-0: #f6f8fa;
	--spms-heat-1: #cfe0ee;
	--spms-heat-2: #9cc3dd;
	--spms-heat-3: #5f9dc4;
	--spms-heat-4: #2c5f8a;
	--spms-selected: #2c8a5f;

	color: var( --spms-text );
	max-width: 1100px;
	margin: 0 auto;
	font-size: 15px;
	line-height: 1.5;
}

@media ( prefers-color-scheme: dark ) {
	.spms-app {
		--spms-border: #3a3f45;
		--spms-text: #e3e6e8;
		--spms-muted: #9aa3ab;
		--spms-bg: #1d2327;
		--spms-bg-alt: #262c31;
		--spms-heat-0: #262c31;
		--spms-heat-1: #24384a;
		--spms-heat-2: #2c5170;
		--spms-heat-3: #35708f;
		--spms-heat-4: #56a3c9;
	}
}

.spms-app * {
	box-sizing: border-box;
}

.spms-loading,
.spms-error,
.spms-notice {
	padding: 1em;
	color: var( --spms-muted );
}

.spms-error {
	color: #b3261e;
}

.spms-header h2 {
	margin-bottom: 0.2em;
}

.spms-meta {
	color: var( --spms-muted );
	font-size: 0.9em;
}

.spms-columns {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 2em;
	align-items: start;
}

@media ( max-width: 760px ) {
	.spms-columns {
		grid-template-columns: 1fr;
	}
}

.spms-panel h3 {
	margin-bottom: 0.4em;
}

.spms-identity {
	display: grid;
	gap: 0.3em;
	margin-bottom: 0.8em;
	max-width: 320px;
}

.spms-identity input {
	padding: 0.4em;
	border: 1px solid var( --spms-border );
	border-radius: 4px;
	background: var( --spms-bg );
	color: var( --spms-text );
}

.spms-signed-in {
	color: var( --spms-muted );
	font-size: 0.9em;
}

.spms-grid-wrap {
	overflow-x: auto;
	border: 1px solid var( --spms-border );
	border-radius: 6px;
	touch-action: pan-y;
}

.spms-grid {
	border-collapse: collapse;
	width: 100%;
	min-width: 420px;
}

.spms-grid th,
.spms-grid td {
	border: 1px solid var( --spms-border );
	text-align: center;
	font-size: 0.8em;
	white-space: nowrap;
}

.spms-grid thead th {
	padding: 0.4em 0.3em;
	background: var( --spms-bg-alt );
	position: sticky;
	top: 0;
}

.spms-rowhead {
	padding: 0 0.5em;
	background: var( --spms-bg-alt );
	font-weight: normal;
	color: var( --spms-muted );
	position: sticky;
	left: 0;
}

.spms-cell {
	width: 2.4em;
	height: 1.8em;
	cursor: pointer;
	user-select: none;
	background: var( --spms-bg );
}

.spms-cell--empty {
	background: repeating-linear-gradient( 45deg, var( --spms-bg-alt ), var( --spms-bg-alt ) 4px, var( --spms-bg ) 4px, var( --spms-bg ) 8px );
	cursor: default;
}

.spms-cell--mine {
	touch-action: none; /* Drag must win over page scroll inside this grid. */
}

.spms-cell--mine.is-selected {
	background: var( --spms-selected );
}

.spms-cell--mine:focus-visible,
.spms-cell--group:focus-visible {
	outline: 3px solid var( --spms-focus );
	outline-offset: -2px;
	z-index: 1;
	position: relative;
}

.spms-heat-0 {
	background: var( --spms-heat-0 );
}
.spms-heat-1 {
	background: var( --spms-heat-1 );
}
.spms-heat-2 {
	background: var( --spms-heat-2 );
	color: #fff;
}
.spms-heat-3 {
	background: var( --spms-heat-3 );
	color: #fff;
}
.spms-heat-4 {
	background: var( --spms-heat-4 );
	color: #fff;
}

.spms-count {
	font-variant-numeric: tabular-nums;
}

.spms-btn {
	display: inline-block;
	padding: 0.6em 1.2em;
	border: 1px solid var( --spms-border );
	border-radius: 6px;
	background: var( --spms-bg );
	color: var( --spms-text );
	cursor: pointer;
	font-size: 0.95em;
	text-decoration: none;
	margin-top: 0.6em;
}

.spms-btn--primary {
	background: var( --spms-primary );
	color: var( --spms-primary-contrast );
	border-color: var( --spms-primary );
}

.spms-btn:focus-visible {
	outline: 3px solid var( --spms-focus );
	outline-offset: 2px;
}

.spms-status {
	color: var( --spms-muted );
	font-size: 0.9em;
	min-height: 1.2em;
}

.spms-organizer {
	margin-top: 2em;
	padding-top: 1.5em;
	border-top: 1px solid var( --spms-border );
}

.spms-top-slots {
	list-style: none;
	margin: 0.5em 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: 0.5em;
}

.spms-finalized {
	text-align: center;
	padding: 2em 1em;
}

.spms-finalized-badge {
	display: inline-block;
	padding: 0.3em 1em;
	border-radius: 999px;
	background: var( --spms-selected );
	color: #fff;
	font-weight: 600;
}

.spms-finalized-time {
	font-size: 1.3em;
	margin: 0.6em 0 1em;
}

.spms-create-form label {
	display: block;
	font-weight: 600;
	margin-top: 0.8em;
}

.spms-create-form input[type="text"],
.spms-create-form input[type="email"],
.spms-create-form input[type="date"],
.spms-create-form input[type="time"],
.spms-create-form textarea,
.spms-create-form select {
	width: 100%;
	max-width: 420px;
	padding: 0.5em;
	border: 1px solid var( --spms-border );
	border-radius: 4px;
	background: var( --spms-bg );
	color: var( --spms-text );
	margin-top: 0.2em;
}

.spms-dates-list {
	list-style: none;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: 0.4em;
	margin-top: 0.5em;
}

.spms-dates-list li {
	background: var( --spms-bg-alt );
	border: 1px solid var( --spms-border );
	border-radius: 999px;
	padding: 0.2em 0.4em 0.2em 0.8em;
	font-size: 0.85em;
}

.spms-remove-date {
	background: none;
	border: none;
	cursor: pointer;
	color: var( --spms-muted );
	font-size: 1.1em;
	line-height: 1;
	padding: 0 0.3em;
}