/* EvenOddLab Math Tools – calculator UI. Uses theme presets when present, own fallbacks otherwise.
   Variables sit on body because WordPress < 6.6 prints presets on body, not :root. */
body {
	--eol-primary: var(--wp--preset--color--primary, #2563eb);
	--eol-primary-hover: var(--wp--preset--color--primary-hover, #1d4ed8);
	--eol-secondary: var(--wp--preset--color--secondary, #6366f1);
	--eol-text: var(--wp--preset--color--text, #111827);
	--eol-muted: var(--wp--preset--color--muted, #6b7280);
	--eol-bg: var(--wp--preset--color--background, #ffffff);
	--eol-bg-soft: var(--wp--preset--color--light, #f8fafc);
	--eol-border: var(--wp--preset--color--border, #e5e7eb);
	--eol-success: var(--wp--preset--color--success, #16a34a);
	--eol-even: #15803d;            /* success, darkened to 5.0:1 on white for text */
	--eol-even-bg: #f0fdf4;
	--eol-odd: #4338ca;             /* indigo-700, 7.9:1 */
	--eol-odd-bg: #eef2ff;
	--eol-error: #b91c1c;
	--eol-error-bg: #fef2f2;
	--eol-radius: 14px;
	--eol-radius-sm: 10px;
	--eol-focus: 0 0 0 3px rgba(37, 99, 235, 0.35);
}

.eol-tool {
	background: var(--eol-bg);
	border: 1px solid var(--eol-border);
	border-radius: var(--eol-radius);
	box-shadow: 0 1px 2px rgba(17, 24, 39, 0.04), 0 8px 24px -12px rgba(17, 24, 39, 0.12);
	padding: clamp(1.1rem, 3vw, 1.75rem);
	margin-block: 1.5rem;
	color: var(--eol-text);
	max-width: 100%;
	box-sizing: border-box;
}

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

.eol-tool__title {
	margin: 0 0 1rem;
	font-size: 0.8125rem;
	font-weight: 600;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--eol-primary);
}

.eol-form {
	display: grid;
	gap: 1rem;
	margin: 0;
}

.eol-field {
	display: grid;
	gap: 0.375rem;
	min-width: 0;
}

.eol-label {
	font-weight: 600;
	font-size: 0.9375rem;
}

.eol-hint {
	margin: 0;
	font-size: 0.875rem;
	color: var(--eol-muted);
}

.eol-input-wrap {
	display: flex;
	gap: 0.5rem;
}

.eol-input {
	width: 100%;
	min-width: 0;
	min-height: 48px;
	padding: 0.625rem 0.875rem;
	font: inherit;
	font-size: 1rem;
	color: var(--eol-text);
	background: var(--eol-bg);
	border: 1px solid #cbd5e1;
	border-radius: var(--eol-radius-sm);
	transition: border-color 0.15s, box-shadow 0.15s;
	font-variant-numeric: tabular-nums;
}

.eol-field--lg .eol-input {
	min-height: 56px;
	font-size: 1.375rem;
	font-weight: 600;
}

.eol-input:hover {
	border-color: #94a3b8;
}

.eol-input:focus {
	outline: none;
	border-color: var(--eol-primary);
	box-shadow: var(--eol-focus);
}

.eol-input[aria-invalid="true"] {
	border-color: var(--eol-error);
}

.eol-select {
	appearance: none;
	background-image: linear-gradient(45deg, transparent 50%, var(--eol-muted) 50%), linear-gradient(135deg, var(--eol-muted) 50%, transparent 50%);
	background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
	background-size: 5px 5px;
	background-repeat: no-repeat;
	padding-right: 2.25rem;
}

.eol-textarea {
	min-height: 5rem;
	resize: vertical;
}

.eol-grid-fields {
	display: grid;
	gap: 1rem;
	grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.eol-check {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	font-size: 0.9375rem;
}

.eol-check {
	min-height: 44px;
}

.eol-check input {
	flex: 0 0 auto;
	width: 1.5rem;
	height: 1.5rem;
	margin: 0;
	accent-color: var(--eol-primary);
}

/* Buttons */
.eol-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.625rem;
}

.eol-actions--center {
	justify-content: center;
}

.eol-btn,
.eol-sign,
.eol-chip,
.eol-icon-btn {
	font: inherit;
	cursor: pointer;
	border-radius: var(--eol-radius-sm);
	transition: background-color 0.15s, border-color 0.15s, color 0.15s;
	-webkit-tap-highlight-color: transparent;
}

.eol-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 48px;
	padding: 0.625rem 1.25rem;
	font-weight: 600;
	font-size: 1rem;
	border: 1px solid transparent;
	text-decoration: none;
}

.eol-btn--primary {
	background: var(--eol-primary);
	color: #fff;
	flex: 1 1 auto;
	max-width: 260px;
}

.eol-btn--primary:hover {
	background: var(--eol-primary-hover);
}

.eol-btn--ghost {
	background: var(--eol-bg);
	color: var(--eol-text);
	border-color: var(--eol-border);
}

.eol-btn--ghost:hover {
	background: var(--eol-bg-soft);
	border-color: #cbd5e1;
}

.eol-btn--small {
	min-height: 44px;
	padding: 0.5rem 0.875rem;
	font-size: 0.9375rem;
	background: var(--eol-bg-soft);
	border-color: var(--eol-border);
	color: var(--eol-text);
}

.eol-btn--small:hover {
	border-color: var(--eol-primary);
	color: var(--eol-primary);
}

.eol-btn:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

.eol-sign {
	flex: 0 0 56px;
	font-size: 1.375rem;
	font-weight: 600;
	background: var(--eol-bg-soft);
	border: 1px solid var(--eol-border);
	color: var(--eol-text);
}

.eol-btn:focus-visible,
.eol-sign:focus-visible,
.eol-chip:focus-visible,
.eol-icon-btn:focus-visible,
.eol-check input:focus-visible,
.eol-card__title a:focus-visible,
.eol-paste summary:focus-visible {
	outline: 3px solid var(--eol-primary);
	outline-offset: 2px;
}

/* Example chips */
.eol-examples {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.5rem;
	font-size: 0.875rem;
	color: var(--eol-muted);
}

.eol-examples__list {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
}

.eol-chip {
	min-width: 44px;
	min-height: 44px;
	padding: 0.25rem 0.875rem;
	background: var(--eol-bg-soft);
	border: 1px solid var(--eol-border);
	color: var(--eol-text);
	font-weight: 600;
	font-variant-numeric: tabular-nums;
}

.eol-chip:hover {
	border-color: var(--eol-primary);
	color: var(--eol-primary);
}

/* Results */
.eol-result:empty {
	display: none;
}

.eol-result {
	margin-top: 1.25rem;
}

.eol-result__card {
	border-radius: var(--eol-radius-sm);
	border: 1px solid var(--eol-border);
	border-left-width: 6px;
	padding: 1rem 1.125rem;
	background: var(--eol-bg-soft);
}

.eol-result--even {
	border-left-color: var(--eol-even);
	background: var(--eol-even-bg);
}

.eol-result--odd {
	border-left-color: var(--eol-odd);
	background: var(--eol-odd-bg);
}

.eol-result--error {
	border-left-color: var(--eol-error);
	background: var(--eol-error-bg);
}

.eol-result--neither {
	border-left-color: var(--eol-muted);
}

.eol-result__badge {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	margin: 0 0 0.5rem;
	font-size: 1.25rem;
	font-weight: 800;
	letter-spacing: 0.04em;
	text-transform: uppercase;
}

.eol-result--even .eol-result__badge { color: var(--eol-even); }
.eol-result--odd .eol-result__badge { color: var(--eol-odd); }
.eol-result--error .eol-result__badge { color: var(--eol-error); }

.eol-result__icon {
	font-size: 0.9em;
}

.eol-result__lead {
	margin: 0 0 0.5rem;
	font-size: 1.0625rem;
	font-weight: 600;
}

.eol-result__steps {
	margin: 0.5rem 0;
	padding-left: 1.25rem;
	display: grid;
	gap: 0.25rem;
}

.eol-result__tip,
.eol-result__summary {
	margin: 0.5rem 0 0;
	font-size: 0.9375rem;
	color: #374151;
}

.eol-result__summary {
	margin: 0 0 0.75rem;
	font-weight: 600;
	color: var(--eol-text);
}

.eol-num {
	font-variant-numeric: tabular-nums;
	overflow-wrap: anywhere;
	word-break: break-all;
}

/* Number grid */
.eol-numgrid {
	list-style: none;
	margin: 0;
	padding: 0.75rem;
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(84px, 1fr));
	gap: 0.375rem;
	max-height: 26rem;
	overflow: auto;
	border: 1px solid var(--eol-border);
	border-radius: var(--eol-radius-sm);
	background: var(--eol-bg);
}

.eol-numgrid li {
	padding: 0.375rem 0.25rem;
	text-align: center;
	border-radius: 6px;
	background: var(--eol-bg-soft);
	font-weight: 600;
	font-size: 0.9375rem;
	min-width: 0;
}

.eol-numgrid--even li { background: var(--eol-even-bg); color: #14532d; }
.eol-numgrid--odd li { background: var(--eol-odd-bg); color: #312e81; }

.eol-split {
	display: grid;
	gap: 1rem;
	grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.eol-split__title {
	margin: 0 0 0.5rem;
	font-size: 1rem;
}

/* Multi calculator */
.eol-rows {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	gap: 0.5rem;
}

.eol-row {
	display: grid;
	grid-template-columns: 6.5rem 1fr auto;
	align-items: center;
	gap: 0.5rem;
}

.eol-row__label {
	font-size: 0.875rem;
	color: var(--eol-muted);
}

.eol-icon-btn {
	width: 44px;
	height: 44px;
	font-size: 1.25rem;
	line-height: 1;
	background: transparent;
	border: 1px solid var(--eol-border);
	color: var(--eol-muted);
}

.eol-icon-btn:hover {
	color: var(--eol-error);
	border-color: var(--eol-error);
}

.eol-icon-btn[hidden] {
	display: none;
}

.eol-paste summary {
	cursor: pointer;
	color: var(--eol-primary);
	font-weight: 600;
	min-height: 44px;
	display: flex;
	align-items: center;
}

.eol-paste[open] {
	display: grid;
	gap: 0.5rem;
}

.eol-paste .eol-btn {
	justify-self: start;
}

.eol-summary {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
	margin: 0 0 1rem;
}

.eol-summary__item {
	flex: 1 1 110px;
	padding: 0.75rem 1rem;
	border: 1px solid var(--eol-border);
	border-radius: var(--eol-radius-sm);
	background: var(--eol-bg-soft);
}

.eol-summary__item dt {
	font-size: 0.8125rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	color: var(--eol-muted);
}

.eol-summary__item dd {
	margin: 0;
	font-size: 1.75rem;
	font-weight: 800;
}

.eol-summary__item--even dd { color: var(--eol-even); }
.eol-summary__item--odd dd { color: var(--eol-odd); }

.eol-table-wrap {
	overflow-x: auto;
	border: 1px solid var(--eol-border);
	border-radius: var(--eol-radius-sm);
}

.eol-table {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.9375rem;
	margin: 0;
}

.eol-table th,
.eol-table td {
	padding: 0.625rem 0.875rem;
	text-align: left;
	border-bottom: 1px solid var(--eol-border);
	max-width: 22rem;
	overflow-wrap: anywhere;
}

.eol-table thead th {
	background: var(--eol-bg-soft);
	font-size: 0.8125rem;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--eol-muted);
}

.eol-table tbody tr:last-child td {
	border-bottom: 0;
}

.eol-tag {
	display: inline-block;
	padding: 0.125rem 0.625rem;
	border-radius: 999px;
	font-weight: 700;
	font-size: 0.8125rem;
}

.eol-tag--even { background: var(--eol-even-bg); color: var(--eol-even); border: 1px solid #bbf7d0; }
.eol-tag--odd { background: var(--eol-odd-bg); color: var(--eol-odd); border: 1px solid #c7d2fe; }
.eol-tag--invalid { background: var(--eol-error-bg); color: var(--eol-error); border: 1px solid #fecaca; }

/* Export bar */
.eol-export {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.5rem;
	margin-top: 1rem;
	padding-top: 1rem;
	border-top: 1px dashed var(--eol-border);
}

.eol-export[hidden] {
	display: none;
}

.eol-export__status {
	font-size: 0.875rem;
	color: var(--eol-even);
	font-weight: 600;
}

/* Classifier */
.eol-props {
	margin: 0.75rem 0 0;
	display: grid;
	gap: 0;
	background: var(--eol-bg);
	border: 1px solid var(--eol-border);
	border-radius: var(--eol-radius-sm);
}

.eol-props__row {
	display: grid;
	grid-template-columns: minmax(8rem, 12rem) 1fr;
	gap: 0.75rem;
	padding: 0.75rem 1rem;
	border-bottom: 1px solid var(--eol-border);
}

.eol-props__row:last-child {
	border-bottom: 0;
}

.eol-props dt {
	font-weight: 600;
	color: var(--eol-muted);
}

.eol-props dd {
	margin: 0;
	display: grid;
	gap: 0.125rem;
	min-width: 0;
}

.eol-props dd span {
	font-size: 0.9375rem;
	color: #374151;
	overflow-wrap: anywhere;
}

/* Number line */
.eol-line {
	display: grid;
	gap: 1rem;
}

.eol-line__cells {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	grid-template-columns: repeat(11, minmax(0, 1fr));
	gap: 0.25rem;
}

.eol-line__cell {
	display: grid;
	justify-items: center;
	gap: 0.125rem;
	padding: 0.5rem 0.125rem;
	border-radius: 8px;
	font-weight: 700;
	font-size: clamp(0.8rem, 2.5vw, 1.0625rem);
	border: 1px solid transparent;
	min-width: 0;
}

.eol-line__cell small {
	font-weight: 500;
	font-size: 0.6875rem;
	text-transform: uppercase;
	letter-spacing: 0.03em;
}

.eol-line__cell--even { background: var(--eol-even-bg); color: #14532d; border-color: #bbf7d0; }
.eol-line__cell--odd { background: var(--eol-odd-bg); color: #312e81; border-color: #c7d2fe; }
.eol-line__cell.is-zero { outline: 3px solid var(--eol-even); outline-offset: 1px; }

.eol-line__caption {
	margin: 0;
	text-align: center;
	font-size: 0.9375rem;
	color: #374151;
}

/* Related tools + tool grid */
.eol-related {
	margin-block: 2.5rem;
}

.eol-related__title {
	margin: 0 0 1rem;
}

.eol-cards {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	gap: 1rem;
	grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr));
}

.eol-card {
	position: relative;
	display: grid;
	align-content: start;
	gap: 0.375rem;
	padding: 1.25rem;
	background: var(--eol-bg);
	border: 1px solid var(--eol-border);
	border-radius: var(--eol-radius);
	transition: border-color 0.15s, box-shadow 0.15s;
}

.eol-card:hover {
	border-color: #bfdbfe;
	box-shadow: 0 8px 24px -14px rgba(37, 99, 235, 0.45);
}

.eol-card__icon {
	display: inline-grid;
	place-items: center;
	min-width: 2.5rem;
	height: 2.5rem;
	padding: 0 0.5rem;
	justify-self: start;
	border-radius: 10px;
	background: #eff6ff;
	color: var(--eol-primary);
	font-weight: 800;
	font-size: 0.875rem;
}

.eol-card__title {
	margin: 0.25rem 0 0;
	font-size: 1.0625rem;
	line-height: 1.3;
}

.eol-card__title a {
	color: var(--eol-text);
	text-decoration: none;
}

/* Whole card clickable, single link in the accessibility tree. */
.eol-card__title a::after {
	content: "";
	position: absolute;
	inset: 0;
	border-radius: var(--eol-radius);
}

.eol-card:hover .eol-card__title a {
	color: var(--eol-primary);
}

.eol-card__text {
	margin: 0;
	font-size: 0.9375rem;
	color: var(--eol-muted);
	line-height: 1.5;
}

/* Ads */
.eol-ad {
	margin-block: 2rem;
	min-height: 120px;
	text-align: center;
}

.eol-ad__label {
	display: block;
	font-size: 0.6875rem;
	text-transform: uppercase;
	letter-spacing: 0.08em;
	color: var(--eol-muted);
	margin-bottom: 0.25rem;
}

.eol-ad--preview {
	display: grid;
	place-items: center;
	border: 2px dashed #cbd5e1;
	border-radius: var(--eol-radius-sm);
	color: var(--eol-muted);
	font-size: 0.875rem;
}

.screen-reader-text {
	border: 0;
	clip: rect(1px, 1px, 1px, 1px);
	clip-path: inset(50%);
	height: 1px;
	margin: -1px;
	overflow: hidden;
	padding: 0;
	position: absolute;
	width: 1px;
	word-wrap: normal !important;
}

@media (max-width: 480px) {
	.eol-btn--primary {
		max-width: none;
		flex-basis: 100%;
	}

	.eol-actions .eol-btn--ghost {
		flex: 1 1 auto;
	}

	.eol-row {
		grid-template-columns: 1fr auto;
	}

	.eol-row__label {
		grid-column: 1 / -1;
	}

	.eol-props__row {
		grid-template-columns: 1fr;
		gap: 0.25rem;
	}

	.eol-line__cell small {
		font-size: 0.5625rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	.eol-tool *,
	.eol-card {
		transition: none !important;
	}
}

@media (forced-colors: active) {
	.eol-result__card,
	.eol-card,
	.eol-tool {
		border: 1px solid CanvasText;
	}
}

@media print {
	.eol-actions,
	.eol-export,
	.eol-examples,
	.eol-ad {
		display: none !important;
	}
}