/* ==========================================================================
   Redirect Chain Checker — widget styles
   Design notes:
   - Brand accent kept from the original crimson (#ba123c) — this is the
     site's own color, not a generic default.
   - Body copy uses the system sans stack; URLs, status codes and header
     values use a monospace stack, since this is a technical audit tool and
     raw values (codes, headers) read better as "data" than as prose.
   - The signature element is the redirect chain "trail": a connected line
     with numbered hop markers, because a redirect chain genuinely is an
     ordered sequence — the visual encodes something true about the data.
   - Mobile-first-friendly: every grid used for tabular data collapses to a
     stacked, labelled layout below 560px instead of squeezing columns.
   ========================================================================== */

.uip-widget {
	--uip-surface: #ffffff;
	--uip-surface-soft: #faf6f1;
	--uip-surface-sunk: #f3ede5;
	--uip-line: rgba(23, 18, 13, 0.11);
	--uip-line-strong: rgba(23, 18, 13, 0.18);
	--uip-text: #17120d;
	--uip-text-soft: #675f56;
	--uip-text-faint: #948c81;
	--uip-brand: #ba123c;
	--uip-brand-deep: #8f0f30;
	--uip-brand-tint: rgba(186, 18, 60, 0.1);
	--uip-success: #147a44;
	--uip-warning: #a5670f;
	--uip-danger: #b8380c;
	--uip-critical: #6d28d9;
	--uip-neutral: #5c6773;
	--uip-focus: #1c6ee0;
	--uip-radius-lg: 18px;
	--uip-radius-md: 12px;
	--uip-radius-sm: 8px;
	--uip-shadow-card: 0 14px 34px rgba(30, 21, 13, 0.07);
	--uip-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Consolas, monospace;
	--uip-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;

	box-sizing: border-box;
	font-family: var(--uip-sans);
	color: var(--uip-text);
	max-width: 1120px;
	margin: 0 auto;
	font-size: 16px;
	line-height: 1.5;
}

@media (prefers-color-scheme: dark) {
	.uip-widget {
		--uip-surface: #1a1613;
		--uip-surface-soft: #221c18;
		--uip-surface-sunk: #14100d;
		--uip-line: rgba(255, 250, 244, 0.12);
		--uip-line-strong: rgba(255, 250, 244, 0.2);
		--uip-text: #f5efe7;
		--uip-text-soft: #c9beb1;
		--uip-text-faint: #948a7d;
		--uip-brand: #ff4d78;
		--uip-brand-deep: #ff7a97;
		--uip-brand-tint: rgba(255, 77, 120, 0.16);
		--uip-shadow-card: 0 14px 34px rgba(0, 0, 0, 0.35);
	}
}

.uip-widget *,
.uip-widget *::before,
.uip-widget *::after {
	box-sizing: border-box;
}

.uip-hidden {
	display: none !important;
}

.uip-widget :focus-visible {
	outline: 2px solid var(--uip-focus);
	outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
	.uip-widget * {
		animation-duration: 0.001ms !important;
		transition-duration: 0.001ms !important;
	}
}

/* ---- Header ---- */

.uip-header {
	margin-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.uip-title {
	font-size: clamp(1.4rem, 2.6vw, 1.85rem);
	font-weight: 800;
	letter-spacing: -0.01em;
	margin: 0 0 0.4rem;
}

.uip-subtitle {
	margin: 0;
	color: var(--uip-text-soft);
	max-width: 60ch;
	font-size: 0.98rem;
}

/* ---- Layout ---- */

.uip-layout {
	display: grid;
	grid-template-columns: minmax(270px, 330px) 1fr;
	gap: 1.5rem;
	align-items: start;
}

@media (max-width: 860px) {
	.uip-layout {
		grid-template-columns: 1fr;
	}
}

.uip-panel {
	position: sticky;
	top: 1rem;
}

@media (max-width: 860px) {
	.uip-panel {
		position: static;
	}
}

.uip-form {
	background: var(--uip-surface);
	border: 1px solid var(--uip-line);
	border-radius: var(--uip-radius-lg);
	padding: 1.35rem;
	box-shadow: var(--uip-shadow-card);
}

.uip-field-label {
	display: block;
	font-weight: 700;
	font-size: 0.85rem;
	margin-bottom: 0.5rem;
}

.uip-url-entry {
	display: flex;
	flex-direction: column;
	gap: 0.65rem;
}

.uip-url-input {
	width: 100%;
	min-height: 116px;
	resize: vertical;
	border: 1px solid var(--uip-line-strong);
	border-radius: var(--uip-radius-sm);
	padding: 0.7rem 0.8rem;
	font-family: var(--uip-mono);
	font-size: 0.88rem;
	line-height: 1.55;
	background: var(--uip-surface-soft);
	color: var(--uip-text);
}

.uip-url-input::placeholder {
	color: var(--uip-text-faint);
}

.uip-url-input:focus {
	outline: 2px solid var(--uip-brand);
	outline-offset: 1px;
	border-color: transparent;
}

.uip-submit-button {
	appearance: none;
	border: none;
	border-radius: var(--uip-radius-sm);
	padding: 0.75rem 1rem;
	background: var(--uip-brand);
	color: #fff;
	font-weight: 700;
	font-size: 0.94rem;
	cursor: pointer;
	transition: background 0.15s ease, transform 0.1s ease;
	min-height: 44px;
}

.uip-submit-button:hover:not(:disabled) {
	background: var(--uip-brand-deep);
}

.uip-submit-button:active:not(:disabled) {
	transform: translateY(1px);
}

.uip-submit-button:disabled {
	opacity: 0.7;
	cursor: progress;
}

.uip-examples {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.4rem;
	margin-top: 0.7rem;
}

.uip-examples__label {
	font-size: 0.76rem;
	color: var(--uip-text-faint);
	margin-right: 0.1rem;
}

.uip-example-chip {
	appearance: none;
	border: 1px dashed var(--uip-line-strong);
	background: transparent;
	color: var(--uip-text-soft);
	border-radius: 999px;
	padding: 0.28rem 0.65rem;
	font-size: 0.76rem;
	cursor: pointer;
	transition: border-color 0.15s ease, color 0.15s ease;
	min-height: 32px;
}

.uip-example-chip:hover {
	border-color: var(--uip-brand);
	color: var(--uip-brand);
}

.uip-field-help {
	margin: 0.65rem 0 0;
	font-size: 0.8rem;
	color: var(--uip-text-faint);
}

.uip-loading-card {
	margin-top: 1rem;
	display: flex;
	align-items: center;
	gap: 0.75rem;
	background: var(--uip-surface-soft);
	border: 1px solid var(--uip-line);
	border-radius: var(--uip-radius-md);
	padding: 0.9rem;
}

.uip-spinner {
	width: 22px;
	height: 22px;
	flex-shrink: 0;
	border-radius: 50%;
	border: 3px solid var(--uip-brand-tint);
	border-top-color: var(--uip-brand);
	animation: uip-spin 0.8s linear infinite;
}

@keyframes uip-spin {
	to {
		transform: rotate(360deg);
	}
}

.uip-loading-title {
	margin: 0;
	font-weight: 700;
	font-size: 0.85rem;
}

.uip-loading-copy {
	margin: 0.15rem 0 0;
	font-size: 0.78rem;
	color: var(--uip-text-soft);
}

.uip-notes-card {
	margin-top: 1rem;
	background: var(--uip-surface-soft);
	border: 1px dashed var(--uip-line-strong);
	border-radius: var(--uip-radius-md);
	padding: 0.9rem 1rem;
}

.uip-notes-list {
	margin: 0;
	padding-left: 1.1rem;
	font-size: 0.8rem;
	color: var(--uip-text-soft);
}

.uip-notes-list li + li {
	margin-top: 0.3rem;
}

/* ---- Results shell ---- */

.uip-results-shell {
	min-height: 240px;
}

.uip-alert-banner {
	background: rgba(184, 56, 12, 0.1);
	border: 1px solid rgba(184, 56, 12, 0.3);
	color: var(--uip-danger);
	border-radius: var(--uip-radius-sm);
	padding: 0.8rem 1rem;
	margin-bottom: 1rem;
	font-size: 0.88rem;
}

.uip-empty-state {
	background: var(--uip-surface);
	border: 1px dashed var(--uip-line-strong);
	border-radius: var(--uip-radius-lg);
	padding: clamp(1.75rem, 5vw, 2.5rem) 1.5rem;
	text-align: center;
}

.uip-empty-state__kicker {
	text-transform: uppercase;
	letter-spacing: 0.08em;
	font-size: 0.72rem;
	font-weight: 700;
	color: var(--uip-brand);
	margin: 0 0 0.5rem;
}

.uip-empty-state h3 {
	margin: 0 0 0.5rem;
	font-size: 1.15rem;
}

.uip-empty-state p {
	margin: 0 auto;
	color: var(--uip-text-soft);
	font-size: 0.88rem;
	max-width: 42ch;
}

.uip-results-toolbar {
	display: flex;
	justify-content: flex-end;
	margin-bottom: 0.75rem;
}

.uip-ghost-button {
	appearance: none;
	border: 1px solid var(--uip-line-strong);
	background: var(--uip-surface);
	color: var(--uip-text);
	border-radius: var(--uip-radius-sm);
	padding: 0.5rem 0.85rem;
	font-size: 0.82rem;
	font-weight: 600;
	cursor: pointer;
	min-height: 38px;
	transition: border-color 0.15s ease, color 0.15s ease;
}

.uip-ghost-button:hover {
	border-color: var(--uip-brand);
	color: var(--uip-brand);
}

.uip-results-card {
	background: var(--uip-surface);
	border: 1px solid var(--uip-line);
	border-radius: var(--uip-radius-lg);
	padding: clamp(1rem, 3vw, 1.35rem);
	box-shadow: var(--uip-shadow-card);
}

.uip-section-title h3 {
	margin: 0 0 0.15rem;
	font-size: 1.1rem;
}

.uip-section-title p {
	margin: 0 0 1rem;
	color: var(--uip-text-soft);
	font-size: 0.85rem;
}

.uip-results-list {
	display: flex;
	flex-direction: column;
	gap: 0.6rem;
}

.uip-result-row {
	border: 1px solid var(--uip-line);
	border-radius: var(--uip-radius-md);
	overflow: hidden;
}

.uip-result-row.uip-is-open {
	border-color: var(--uip-brand);
}

.uip-result-row__trigger {
	width: 100%;
	display: grid;
	grid-template-columns: 16px 1fr auto auto;
	align-items: center;
	gap: 0.75rem;
	background: var(--uip-surface-soft);
	border: none;
	padding: 0.75rem 0.9rem;
	cursor: pointer;
	text-align: left;
	font: inherit;
	color: inherit;
	min-height: 44px;
}

.uip-result-row__chevron {
	width: 8px;
	height: 8px;
	border-right: 2px solid var(--uip-text-faint);
	border-bottom: 2px solid var(--uip-text-faint);
	transform: rotate(-45deg);
	transition: transform 0.15s ease;
}

.uip-result-row.uip-is-open .uip-result-row__chevron {
	transform: rotate(45deg);
	border-color: var(--uip-brand);
}

.uip-result-row__url {
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	font-family: var(--uip-mono);
	font-size: 0.85rem;
	font-weight: 600;
}

.uip-result-row__codes {
	display: flex;
	gap: 0.3rem;
	flex-wrap: wrap;
	justify-content: flex-end;
}

.uip-result-row__time {
	font-family: var(--uip-mono);
	font-size: 0.78rem;
	color: var(--uip-text-faint);
	min-width: 3.5rem;
	text-align: right;
}

@media (max-width: 560px) {
	.uip-result-row__trigger {
		grid-template-columns: 14px 1fr;
		grid-template-areas:
			"chevron url"
			"empty codes";
		row-gap: 0.35rem;
	}
	.uip-result-row__chevron { grid-area: chevron; }
	.uip-result-row__url { grid-area: url; white-space: normal; word-break: break-all; }
	.uip-result-row__codes { grid-area: codes; justify-content: flex-start; }
	.uip-result-row__time { grid-area: codes; justify-self: end; }
}

.uip-result-row__body {
	padding: 1rem;
	border-top: 1px solid var(--uip-line);
}

.uip-status-pill {
	display: inline-flex;
	align-items: center;
	padding: 0.16rem 0.55rem;
	border-radius: 999px;
	font-family: var(--uip-mono);
	font-size: 0.72rem;
	font-weight: 700;
	white-space: nowrap;
}

.uip-status-success {
	background: rgba(20, 122, 68, 0.13);
	color: var(--uip-success);
}

.uip-status-warning {
	background: rgba(165, 103, 15, 0.13);
	color: var(--uip-warning);
}

.uip-status-danger {
	background: rgba(184, 56, 12, 0.13);
	color: var(--uip-danger);
}

.uip-status-critical,
.uip-status-batch-error {
	background: rgba(109, 40, 217, 0.13);
	color: var(--uip-critical);
}

.uip-status-neutral {
	background: rgba(92, 103, 115, 0.13);
	color: var(--uip-neutral);
}

/* ---- Redirect chain "trail" — the signature visual ----
   A connected vertical line with numbered dots at each hop, because the
   chain genuinely is an ordered path from request to final destination. */

.uip-chain-summary {
	margin-bottom: 1.1rem;
}

.uip-chain-summary__head {
	display: none;
}

.uip-chain-trail {
	position: relative;
	display: flex;
	flex-direction: column;
	gap: 0;
	padding-left: 2.1rem;
}

.uip-chain-trail::before {
	content: "";
	position: absolute;
	left: 0.65rem;
	top: 0.65rem;
	bottom: 0.65rem;
	width: 2px;
	background: repeating-linear-gradient(
		to bottom,
		var(--uip-line-strong) 0,
		var(--uip-line-strong) 4px,
		transparent 4px,
		transparent 9px
	);
}

.uip-chain-hop {
	position: relative;
	padding: 0.65rem 0;
	display: grid;
	grid-template-columns: 1fr auto;
	gap: 0.4rem 0.75rem;
	align-items: start;
	font-size: 0.87rem;
}

.uip-chain-hop::before {
	content: attr(data-hop);
	position: absolute;
	left: -2.1rem;
	top: 0.62rem;
	width: 1.3rem;
	height: 1.3rem;
	border-radius: 50%;
	background: var(--uip-surface);
	border: 2px solid var(--uip-brand);
	color: var(--uip-brand);
	font-family: var(--uip-mono);
	font-size: 0.65rem;
	font-weight: 700;
	display: flex;
	align-items: center;
	justify-content: center;
}

.uip-chain-hop__requested {
	word-break: break-all;
	font-family: var(--uip-mono);
}

.uip-chain-hop__destination {
	word-break: break-all;
	color: var(--uip-text-soft);
	font-size: 0.82rem;
	margin-top: 0.2rem;
	font-family: var(--uip-mono);
}

.uip-chain-hop__time {
	text-align: right;
	color: var(--uip-text-faint);
	font-size: 0.78rem;
	font-family: var(--uip-mono);
	white-space: nowrap;
}

@media (max-width: 560px) {
	.uip-chain-hop {
		grid-template-columns: 1fr;
	}
	.uip-chain-hop__time {
		text-align: left;
	}
}

.uip-section {
	margin-top: 1.25rem;
}

.uip-section h4 {
	margin: 0 0 0.5rem;
	font-size: 0.82rem;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	color: var(--uip-text-faint);
}

.uip-kv-list {
	display: flex;
	flex-direction: column;
	border: 1px solid var(--uip-line);
	border-radius: var(--uip-radius-sm);
	overflow: hidden;
}

.uip-kv-row {
	display: grid;
	grid-template-columns: 160px 1fr;
	gap: 0.5rem;
	padding: 0.55rem 0.75rem;
	font-size: 0.85rem;
}

.uip-kv-row:nth-child(odd) {
	background: var(--uip-surface-soft);
}

@media (max-width: 560px) {
	.uip-kv-row {
		grid-template-columns: 1fr;
		gap: 0.15rem;
	}
}

.uip-kv-key {
	font-weight: 700;
	color: var(--uip-text-soft);
}

.uip-kv-value {
	word-break: break-word;
	font-family: var(--uip-mono);
	font-size: 0.82rem;
}

.uip-empty-value {
	color: var(--uip-text-faint);
	font-style: italic;
	font-family: var(--uip-sans);
}

.uip-recommendations {
	margin: 0;
	padding-left: 1.2rem;
	font-size: 0.85rem;
	display: flex;
	flex-direction: column;
	gap: 0.4rem;
}

.uip-error-inline {
	color: var(--uip-danger);
	font-size: 0.85rem;
}

.uip-toast {
	position: fixed;
	bottom: 1.25rem;
	left: 50%;
	transform: translateX(-50%);
	background: var(--uip-text);
	color: var(--uip-surface);
	padding: 0.6rem 1.1rem;
	border-radius: 999px;
	font-size: 0.8rem;
	z-index: 9999;
	box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

/* ==========================================================================
   Long-form SEO content block below the tool
   ========================================================================== */

.uip-seo-content {
	max-width: 780px;
	margin: clamp(2.5rem, 6vw, 4rem) auto 0;
	color: var(--uip-text);
	font-family: var(--uip-sans);
}

.uip-content-block {
	margin-bottom: clamp(2rem, 5vw, 2.75rem);
}

.uip-content-block h2 {
	font-size: clamp(1.2rem, 2.4vw, 1.5rem);
	font-weight: 800;
	letter-spacing: -0.01em;
	margin: 0 0 0.85rem;
}

.uip-content-block p {
	margin: 0 0 0.9rem;
	color: var(--uip-text-soft);
	line-height: 1.65;
}

.uip-content-block ul,
.uip-content-block ol {
	margin: 0 0 0.9rem;
	padding-left: 1.3rem;
	color: var(--uip-text-soft);
	line-height: 1.65;
}

.uip-content-block li + li {
	margin-top: 0.4rem;
}

.uip-content-block strong {
	color: var(--uip-text);
}

.uip-steps {
	counter-reset: uip-step;
}

.uip-steps li {
	list-style: none;
	position: relative;
	padding-left: 0.35rem;
}

/* Table: horizontally scrollable on narrow viewports rather than squeezed */
.uip-table-wrap {
	overflow-x: auto;
	border: 1px solid var(--uip-line);
	border-radius: var(--uip-radius-md);
}

.uip-content-table {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.88rem;
	min-width: 560px;
}

.uip-content-table th,
.uip-content-table td {
	text-align: left;
	padding: 0.65rem 0.85rem;
	border-bottom: 1px solid var(--uip-line);
}

.uip-content-table thead th {
	background: var(--uip-surface-soft);
	font-size: 0.74rem;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	color: var(--uip-text-faint);
}

.uip-content-table td:first-child {
	font-family: var(--uip-mono);
	font-weight: 700;
	color: var(--uip-brand);
}

.uip-content-table tbody tr:last-child td {
	border-bottom: none;
}

@media (max-width: 560px) {
	.uip-table-wrap {
		border: none;
	}
	.uip-content-table {
		min-width: 0;
	}
	.uip-content-table thead {
		display: none;
	}
	.uip-content-table tr {
		display: block;
		border: 1px solid var(--uip-line);
		border-radius: var(--uip-radius-sm);
		margin-bottom: 0.6rem;
		padding: 0.4rem 0.1rem;
	}
	.uip-content-table td {
		display: grid;
		grid-template-columns: 40% 1fr;
		border-bottom: none;
		padding: 0.35rem 0.75rem;
	}
	.uip-content-table td::before {
		content: attr(data-label);
		font-size: 0.72rem;
		text-transform: uppercase;
		letter-spacing: 0.04em;
		color: var(--uip-text-faint);
		font-family: var(--uip-sans);
		font-weight: 700;
	}
}

.uip-glossary {
	margin: 0;
	display: grid;
	gap: 0.9rem;
}

.uip-glossary__item {
	border-left: 2px solid var(--uip-line-strong);
	padding-left: 0.9rem;
}

.uip-glossary__item dt {
	font-weight: 700;
	font-family: var(--uip-mono);
	font-size: 0.88rem;
	margin-bottom: 0.2rem;
}

.uip-glossary__item dd {
	margin: 0;
	color: var(--uip-text-soft);
	font-size: 0.92rem;
	line-height: 1.55;
}

.uip-faq-list {
	display: flex;
	flex-direction: column;
	gap: 0.6rem;
}

.uip-faq-item {
	border: 1px solid var(--uip-line);
	border-radius: var(--uip-radius-md);
	padding: 0.15rem 1rem;
}

.uip-faq-item summary {
	cursor: pointer;
	font-weight: 700;
	padding: 0.85rem 0;
	list-style: none;
	position: relative;
	padding-right: 1.5rem;
}

.uip-faq-item summary::-webkit-details-marker {
	display: none;
}

.uip-faq-item summary::after {
	content: "+";
	position: absolute;
	right: 0;
	top: 0.75rem;
	font-size: 1.2rem;
	color: var(--uip-brand);
	font-weight: 400;
	line-height: 1;
}

.uip-faq-item[open] summary::after {
	content: "\2212";
}

.uip-faq-item p {
	margin: 0 0 0.9rem;
	color: var(--uip-text-soft);
	line-height: 1.6;
}

.uip-related-links {
	font-size: 0.9rem;
	color: var(--uip-text-soft);
	border-top: 1px solid var(--uip-line);
	padding-top: 1.25rem;
}

.uip-related-links a {
	color: var(--uip-brand);
	font-weight: 600;
	text-decoration: none;
}

.uip-related-links a:hover {
	text-decoration: underline;
}