/**
 * ServBoat Tools — shared design system
 * All selectors scoped under .sb-tool to avoid theme conflicts.
 */

.sb-tool {
	--sb-bg: #fafafa;
	--sb-surface: #ffffff;
	--sb-border: #e5e5e5;
	--sb-border-hover: #d4d4d4;
	--sb-text: #171717;
	--sb-text-muted: #737373;
	--sb-text-subtle: #a3a3a3;
	--sb-accent: #2563eb;
	--sb-accent-muted: #eff6ff;
	--sb-radius: 8px;
	--sb-radius-sm: 6px;
	--sb-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);

	box-sizing: border-box;
	max-width: 800px;
	margin: 2rem auto;
	font-family: inherit;
	font-size: 1rem;
	line-height: 1.6;
	color: var(--sb-text);
}

.sb-tool *,
.sb-tool *::before,
.sb-tool *::after {
	box-sizing: border-box;
}

/* Stats bar */

.sb-tool__stats {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 0.75rem;
	padding: 1rem 1.25rem;
	background: var(--sb-surface);
	border: 1px solid var(--sb-border);
	border-radius: var(--sb-radius);
	box-shadow: var(--sb-shadow);
	position: sticky;
	top: 1rem;
	z-index: 10;
	margin-bottom: 1rem;
}

.sb-stat {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 0.125rem;
	padding: 0.5rem 0.75rem;
	border-radius: var(--sb-radius-sm);
	background: var(--sb-bg);
	border: 1px solid transparent;
	transition: border-color 150ms ease;
}

.sb-stat--primary {
	background: var(--sb-accent-muted);
	border-color: rgba(37, 99, 235, 0.15);
}

.sb-stat--primary .sb-stat__value {
	color: var(--sb-accent);
}

.sb-stat__value {
	font-size: 1.5rem;
	font-weight: 600;
	font-variant-numeric: tabular-nums;
	letter-spacing: -0.02em;
	line-height: 1.2;
	color: var(--sb-text);
}

.sb-stat__label {
	font-size: 0.75rem;
	font-weight: 500;
	color: var(--sb-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

/* Editor */

.sb-tool__editor-wrap {
	background: var(--sb-surface);
	border: 1px solid var(--sb-border);
	border-radius: var(--sb-radius);
	box-shadow: var(--sb-shadow);
	overflow: hidden;
}

.sb-tool__toolbar {
	display: flex;
	justify-content: flex-end;
	align-items: center;
	padding: 0.5rem 0.75rem;
	border-bottom: 1px solid var(--sb-border);
	background: var(--sb-bg);
}

.sb-tool__label {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

.sb-tool__textarea {
	display: block;
	width: 100%;
	min-height: 320px;
	padding: 1.25rem 1.5rem;
	border: none;
	background: var(--sb-surface);
	color: var(--sb-text);
	font-family: inherit;
	font-size: 1.0625rem;
	line-height: 1.7;
	resize: vertical;
	outline: none;
}

.sb-tool__textarea::placeholder {
	color: var(--sb-text-subtle);
}

.sb-tool__textarea:focus {
	box-shadow: inset 0 0 0 2px var(--sb-accent);
}

/* Buttons */

.sb-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 0.375rem 0.75rem;
	font-family: inherit;
	font-size: 0.8125rem;
	font-weight: 500;
	line-height: 1.4;
	border-radius: var(--sb-radius-sm);
	cursor: pointer;
	transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}

.sb-btn--ghost {
	background: transparent;
	border: 1px solid var(--sb-border);
	color: var(--sb-text-muted);
}

.sb-btn--ghost:hover {
	background: var(--sb-surface);
	border-color: var(--sb-border-hover);
	color: var(--sb-text);
}

.sb-btn--ghost:focus-visible {
	outline: 2px solid var(--sb-accent);
	outline-offset: 2px;
}

/* SEO extras */

.sb-tool__extras {
	margin-top: 1rem;
	background: var(--sb-surface);
	border: 1px solid var(--sb-border);
	border-radius: var(--sb-radius);
	box-shadow: var(--sb-shadow);
}

.sb-tool__extras-summary {
	padding: 0.875rem 1.25rem;
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--sb-text);
	cursor: pointer;
	list-style: none;
	user-select: none;
	transition: background-color 150ms ease;
}

.sb-tool__extras-summary::-webkit-details-marker {
	display: none;
}

.sb-tool__extras-summary::before {
	content: "▸";
	display: inline-block;
	margin-right: 0.5rem;
	color: var(--sb-text-muted);
	transition: transform 150ms ease;
}

.sb-tool__extras[open] .sb-tool__extras-summary::before {
	transform: rotate(90deg);
}

.sb-tool__extras-summary:hover {
	background: var(--sb-bg);
}

.sb-tool__extras-inner {
	padding: 0 1.25rem 1.25rem;
	border-top: 1px solid var(--sb-border);
}

.sb-field {
	margin-top: 1rem;
}

.sb-field__label {
	display: block;
	margin-bottom: 0.375rem;
	font-size: 0.8125rem;
	font-weight: 500;
	color: var(--sb-text-muted);
}

.sb-input {
	display: block;
	width: 100%;
	padding: 0.625rem 0.875rem;
	font-family: inherit;
	font-size: 0.9375rem;
	line-height: 1.5;
	color: var(--sb-text);
	background: var(--sb-bg);
	border: 1px solid var(--sb-border);
	border-radius: var(--sb-radius-sm);
	outline: none;
	transition: border-color 150ms ease, box-shadow 150ms ease;
}

.sb-input::placeholder {
	color: var(--sb-text-subtle);
}

.sb-input:focus {
	border-color: var(--sb-accent);
	box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.sb-meta-hint {
	margin: 0.75rem 0 0;
	font-size: 0.8125rem;
	color: var(--sb-text-muted);
}

.sb-meta-hint strong {
	font-weight: 600;
	color: var(--sb-text);
	font-variant-numeric: tabular-nums;
}

/* Credit */

.sb-tool__credit {
	margin: 1.25rem 0 0;
	padding-top: 1rem;
	border-top: 1px solid var(--sb-border);
	font-size: 0.75rem;
	color: var(--sb-text-subtle);
	text-align: center;
}

.sb-tool__credit a {
	color: var(--sb-text-muted);
	text-decoration: none;
	font-weight: 500;
	transition: color 150ms ease;
}

.sb-tool__credit a:hover {
	color: var(--sb-accent);
}

/* Responsive */

@media (max-width: 640px) {
	.sb-tool {
		margin: 1.5rem auto;
	}

	.sb-tool__stats {
		grid-template-columns: repeat(2, 1fr);
		position: static;
	}

	.sb-stat__value {
		font-size: 1.25rem;
	}

	.sb-tool__textarea {
		min-height: 260px;
		padding: 1rem;
		font-size: 1rem;
	}
}

@media (max-width: 400px) {
	.sb-tool__stats {
		grid-template-columns: 1fr;
	}
}