/**
 * Buttons: .nscb-btn + --primary | --accent | --secondary | --text, optional
 * --sm, --lg and --block. --accent (the highlight color) marks the one key
 * action of a view; --primary is the Site Settings button color.
 * Markup comes from nscb_get_button() (inc/template-tags.php).
 *
 * .nscb-round: a circular icon control (decorative inside a link or button
 * that carries the accessible name). --accent fills it with the highlight.
 */

.nscb-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--nscb-space-2);
	min-height: 3rem;
	padding: var(--nscb-space-3) var(--nscb-space-5);
	border: 1px solid transparent;
	border-radius: var(--nscb-radius-pill);
	font-family: var(--nscb-font-body);
	font-size: var(--nscb-text-sm);
	font-weight: 700;
	letter-spacing: 0.01em;
	line-height: 1.2;
	text-decoration: none;
	white-space: nowrap;
	cursor: pointer;
	-webkit-tap-highlight-color: transparent;
	transition:
		background-color var(--nscb-duration-fast) var(--nscb-ease-standard),
		border-color var(--nscb-duration-fast) var(--nscb-ease-standard),
		color var(--nscb-duration-fast) var(--nscb-ease-standard),
		box-shadow var(--nscb-duration-base) var(--nscb-ease-out),
		transform var(--nscb-duration-fast) var(--nscb-ease-standard);
}

.nscb-btn .nscb-icon:last-child:not(:first-child) {
	transition: transform var(--nscb-duration-base) var(--nscb-ease-out);
}

.nscb-btn:hover .nscb-icon:last-child:not(:first-child) {
	transform: translateX(3px);
}

.nscb-btn .nscb-icon {
	flex: none;
	width: 1.125rem;
	height: 1.125rem;
}

.nscb-btn:active {
	transform: scale(0.97);
}

/* Primary: solid. */
.nscb-btn--primary {
	background-color: var(--nscb-color-button-bg);
	color: var(--nscb-color-button-text);
}

/* Hover deepens the saved button colour rather than lightening it, so white
   label text gains contrast on hover instead of losing it. */
.nscb-btn--primary:hover {
	background-color: var(--nscb-color-button-bg);
	background-color: color-mix(in srgb, var(--nscb-color-button-bg) 88%, #000000);
	color: var(--nscb-color-button-text);
}

/* Accent: the highlight color with its own dark text, a soft glow on hover. */
.nscb-btn--accent {
	background-color: var(--nscb-color-highlight);
	color: var(--nscb-color-highlight-text);
	box-shadow: inset 0 1px 0 color-mix(in srgb, #FFFFFF 35%, transparent), 0 0 0 0 var(--nscb-highlight-glow);
}

.nscb-btn--accent:hover {
	background-color: var(--nscb-color-highlight);
	background-color: color-mix(in srgb, var(--nscb-color-highlight) 90%, #FFFFFF);
	color: var(--nscb-color-highlight-text);
	box-shadow: inset 0 1px 0 color-mix(in srgb, #FFFFFF 35%, transparent), 0 10px 30px -8px var(--nscb-highlight-glow);
}

.nscb-btn--accent:focus-visible {
	outline-color: var(--nscb-color-text);
}

/* Secondary: outlined. */
.nscb-btn--secondary {
	background-color: color-mix(in srgb, var(--nscb-color-surface) 35%, transparent);
	border-color: color-mix(in srgb, var(--nscb-color-text) 18%, transparent);
	color: var(--nscb-color-text);
}

.nscb-btn--secondary:hover {
	background-color: var(--nscb-color-surface);
	border-color: var(--nscb-color-highlight);
	color: var(--nscb-color-text);
}

/* Text: inline link with an arrow-friendly gap. */
.nscb-btn--text {
	min-height: 2.75rem;
	padding-inline: 0;
	border-radius: var(--nscb-radius-sm);
	background: none;
	color: var(--nscb-color-text);
}

.nscb-btn--text .nscb-icon {
	color: var(--nscb-color-highlight);
	transition: transform var(--nscb-duration-base) var(--nscb-ease-out);
}

.nscb-btn--text:hover {
	color: var(--nscb-color-highlight);
}

.nscb-btn--text:hover .nscb-icon:last-child {
	transform: translateX(3px);
}

.nscb-btn--sm {
	min-height: 2.5rem;
	padding: var(--nscb-space-2) var(--nscb-space-4);
}

.nscb-btn--lg {
	min-height: 3.5rem;
	padding-inline: var(--nscb-space-6);
	font-size: var(--nscb-text-md);
}

.nscb-btn--block {
	width: 100%;
}

.nscb-btn:disabled,
.nscb-btn[aria-disabled="true"] {
	opacity: 0.45;
	pointer-events: none;
}

/* ---------- Round icon control ---------- */

.nscb-round {
	display: inline-grid;
	flex: none;
	place-items: center;
	width: 3rem;
	height: 3rem;
	border: 1px solid var(--nscb-edge-strong);
	border-radius: 50%;
	background-color: var(--nscb-surface-raised);
	box-shadow: var(--nscb-edge-light);
	color: var(--nscb-color-text);
	transition:
		background-color var(--nscb-duration-base) var(--nscb-ease-standard),
		border-color var(--nscb-duration-base) var(--nscb-ease-standard),
		color var(--nscb-duration-base) var(--nscb-ease-standard),
		transform var(--nscb-duration-base) var(--nscb-ease-out);
}

.nscb-round .nscb-icon {
	width: 1.25rem;
	height: 1.25rem;
}

.nscb-round--sm {
	width: 2.5rem;
	height: 2.5rem;
}

.nscb-round--sm .nscb-icon {
	width: 1.0625rem;
	height: 1.0625rem;
}

.nscb-round--accent {
	border-color: transparent;
	background-color: var(--nscb-color-highlight);
	box-shadow: inset 0 1px 0 color-mix(in srgb, #FFFFFF 35%, transparent), 0 8px 22px -10px var(--nscb-highlight-glow);
	color: var(--nscb-color-highlight-text);
}

/* Highlight-colored glyph in a lit icon chip, for secondary actions. */
.nscb-round--glyph {
	border-color: transparent;
	background: var(--nscb-icon-chip-bg);
	box-shadow: var(--nscb-icon-chip-shadow);
	color: var(--nscb-color-highlight);
}