/**
 * RankFlow AI — Block Styles
 *
 * @package RankFlowAI
 * @since   0.6.0
 *
 * =========================================================================
 * DESIGN PRINCIPLES:
 * =========================================================================
 * 1. SCOPED  — Every selector is prefixed with .rfai-block-* or .rfai-*.
 *              No global selector overrides (body, h1, p, a, etc.)
 * 2. INHERIT — Colors and spacing use var(--rfai-*) tokens injected by
 *              DesignTokens::inject_inline_tokens(). Those tokens derive
 *              from var(--wp--preset--*) values, so everything inherits
 *              from the active theme.json automatically.
 * 3. NO FRAMEWORK — Zero import of Bootstrap, Tailwind, or any CSS
 *              framework. Vanilla CSS only.
 * 4. RESPONSIVE — CSS Grid and Flexbox for layouts. Mobile-first breakpoints.
 * 5. ACCESSIBLE — Focus rings, contrast-aware colors, semantic selectors.
 * =========================================================================
 */

/* ==========================================================================
   Hero Block
   ========================================================================== */

.rfai-block-hero {
	position: relative;
	overflow: hidden;
}

.rfai-hero__title {
	font-size: clamp(1.75rem, 4vw, 3rem);
	font-weight: 700;
	line-height: 1.2;
	margin-bottom: var(--rfai-spacing-md, 1rem);
}

.rfai-hero__subtitle {
	font-size: var(--rfai-font-size-lg, 1.125rem);
	opacity: 0.9;
	margin-bottom: var(--rfai-spacing-lg, 1.5rem);
}

.rfai-hero__cta.wp-block-button__link {
	font-weight: 600;
	padding: var(--rfai-spacing-sm, 0.75rem) var(--rfai-spacing-xl, 2rem);
	border-radius: var(--rfai-radius-pill, 9999px);
	transition: opacity 0.2s ease, transform 0.2s ease;
}

.rfai-hero__cta.wp-block-button__link:hover {
	opacity: 0.9;
	transform: translateY(-1px);
}

/* ==========================================================================
   FAQ Block
   ========================================================================== */

.rfai-block-faq {
	margin-top: var(--rfai-spacing-xl, 2rem);
	margin-bottom: var(--rfai-spacing-xl, 2rem);
}

.rfai-block-faq__title,
.rfai-block-faq .rfai-block-faq__title {
	margin-bottom: var(--rfai-spacing-lg, 1.5rem);
}

.rfai-faq__item {
	border: 1px solid var(--rfai-color-border, rgba(0,0,0,0.1));
	border-radius: var(--rfai-radius-md, 8px);
	margin-bottom: var(--rfai-spacing-sm, 0.75rem);
	overflow: hidden;
}

.rfai-faq__item summary,
.rfai-faq__item summary.rfai-faq__question,
.rfai-faq__question {
	font-weight: 600;
	padding: var(--rfai-spacing-md, 1rem) var(--rfai-spacing-lg, 1.5rem);
	cursor: pointer;
	list-style: none;
	display: flex;
	justify-content: space-between;
	align-items: center;
	background: transparent;
	transition: background 0.15s ease;
}

.rfai-faq__item summary::-webkit-details-marker { display: none; }
.rfai-faq__item summary::marker { display: none; }

.rfai-faq__item summary::after,
.rfai-faq__item summary.rfai-faq__question::after {
	content: '+';
	font-size: 1.25rem;
	font-weight: 400;
	color: var(--rfai-color-primary);
	transition: transform 0.2s ease;
	flex-shrink: 0;
}

.rfai-faq__item[open] summary::after,
.rfai-faq__item[open] summary.rfai-faq__question::after {
	transform: rotate(45deg);
}

.rfai-faq__item:hover summary {
	background: var(--rfai-callout-info-bg, rgba(99,102,241,0.05));
}

.rfai-faq__item p,
.rfai-faq__answer {
	padding: var(--rfai-spacing-sm, 0.75rem) var(--rfai-spacing-lg, 1.5rem) var(--rfai-spacing-md, 1rem);
	line-height: var(--rfai-line-height, 1.6);
	margin-top: 0;
	margin-bottom: 0;
}

/* ==========================================================================
   CTA Block
   ========================================================================== */

.rfai-block-cta {
	border-radius: var(--rfai-radius-lg, 12px);
	overflow: hidden;
}

.rfai-block-cta--primary {
	background: var(--rfai-cta-bg, var(--rfai-color-primary, #6366f1));
	color: var(--rfai-cta-text, #fff);
}

.rfai-block-cta--secondary {
	background: var(--rfai-color-secondary, #8b5cf6);
	color: #fff;
}

.rfai-block-cta--outlined {
	border: 2px solid var(--rfai-color-primary, #6366f1);
	background: transparent;
}

.rfai-block-cta--dark {
	background: #1a1a2e;
	color: #fff;
}

.rfai-cta__inner {
	padding: var(--rfai-spacing-xl, 2rem);
	display: flex;
	flex-direction: column;
	gap: var(--rfai-spacing-md, 1rem);
}

.rfai-cta__inner--center { align-items: center; text-align: center; }
.rfai-cta__inner--left   { align-items: flex-start; }
.rfai-cta__inner--right  { align-items: flex-end; }

.rfai-cta__title {
	font-size: clamp(1.25rem, 3vw, 1.75rem);
	font-weight: 700;
	margin: 0;
}

.rfai-block-cta--primary .rfai-cta__title,
.rfai-block-cta--secondary .rfai-cta__title,
.rfai-block-cta--dark .rfai-cta__title {
	color: #fff;
}

.rfai-cta__description { opacity: 0.85; max-width: 60ch; }

.rfai-cta__actions { margin-top: var(--rfai-spacing-sm, 0.75rem); }

.rfai-cta__btn {
	display: inline-block;
	padding: var(--rfai-spacing-sm, 0.75rem) var(--rfai-spacing-xl, 2rem);
	border-radius: var(--rfai-radius-pill, 9999px);
	font-weight: 600;
	text-decoration: none;
	transition: opacity 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.rfai-cta__btn--primary { background: var(--rfai-cta-btn-bg, var(--rfai-color-accent, #f59e0b)); color: #fff; }
.rfai-cta__btn--outlined { border: 2px solid var(--rfai-color-primary); color: var(--rfai-color-primary); background: transparent; }
.rfai-cta__btn--secondary { background: var(--rfai-color-surface, #fff); color: var(--rfai-color-primary); }
.rfai-cta__btn--dark { background: var(--rfai-color-accent, #f59e0b); color: #fff; }

.rfai-cta__btn:hover {
	opacity: 0.9;
	transform: translateY(-1px);
	box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

/* ==========================================================================
   Feature Grid Block
   ========================================================================== */

.rfai-block-feature-grid { padding: var(--rfai-spacing-xl, 2rem) 0; }

.rfai-feature-grid { gap: var(--rfai-spacing-lg, 1.5rem) !important; }

.rfai-feature-card {
	background: var(--rfai-color-surface, #fff);
	border: 1px solid var(--rfai-color-border, rgba(0,0,0,0.08));
	border-radius: var(--rfai-radius-lg, 12px);
	padding: var(--rfai-spacing-lg, 1.5rem);
	transition: box-shadow 0.2s ease, transform 0.2s ease;
	height: 100%;
}

.rfai-feature-card:hover {
	box-shadow: 0 8px 30px rgba(0,0,0,0.08);
	transform: translateY(-2px);
}

.rfai-feature-card__icon {
	font-size: 2rem;
	margin-bottom: var(--rfai-spacing-sm, 0.75rem);
	display: block;
}

.rfai-feature-card__title { margin: 0 0 var(--rfai-spacing-xs, 0.5rem) !important; }
.rfai-feature-card__desc  { opacity: 0.75; margin: 0; line-height: var(--rfai-line-height, 1.6); }

/* ==========================================================================
   Testimonial Block
   ========================================================================== */

.rfai-block-testimonial {
	border-left: 4px solid var(--rfai-color-primary, #6366f1);
	padding: var(--rfai-spacing-lg, 1.5rem) var(--rfai-spacing-xl, 2rem);
	background: var(--rfai-callout-info-bg, rgba(99,102,241,0.05));
	border-radius: 0 var(--rfai-radius-md, 8px) var(--rfai-radius-md, 8px) 0;
}

.rfai-testimonial__stars {
	color: #f59e0b;
	font-size: 1.1rem;
	letter-spacing: 2px;
	margin-bottom: var(--rfai-spacing-sm, 0.75rem);
}

.rfai-star--empty { opacity: 0.25; }

.rfai-testimonial__author {
	display: block;
	margin-top: var(--rfai-spacing-md, 1rem);
	font-weight: 600;
	font-style: normal;
}

.rfai-testimonial__role {
	font-weight: 400;
	opacity: 0.65;
}

/* ==========================================================================
   Statistics Block
   ========================================================================== */

.rfai-block-statistics { padding: var(--rfai-spacing-xl, 2rem) 0; }

.rfai-stats-grid { gap: var(--rfai-spacing-lg, 1.5rem) !important; }

.rfai-stat-card {
	text-align: center;
	padding: var(--rfai-spacing-lg, 1.5rem);
	background: var(--rfai-color-surface, #fff);
	border-radius: var(--rfai-radius-lg, 12px);
	border: 1px solid var(--rfai-color-border, rgba(0,0,0,0.08));
}

.rfai-stat-card__value {
	display: flex;
	align-items: baseline;
	justify-content: center;
	gap: 2px;
	font-weight: 700;
	line-height: 1;
	margin-bottom: var(--rfai-spacing-xs, 0.5rem);
}

.rfai-stat-card__number {
	font-size: var(--rfai-stat-number-size, 2.5rem);
	color: var(--rfai-stat-number-color, var(--rfai-color-primary, #6366f1));
}

.rfai-stat-card__prefix,
.rfai-stat-card__suffix {
	font-size: 1.25rem;
	color: var(--rfai-color-primary, #6366f1);
	font-weight: 600;
}

.rfai-stat-card__label {
	font-size: var(--rfai-font-size-sm, 0.875rem);
	opacity: 0.65;
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

/* ==========================================================================
   Callout Box
   ========================================================================== */

.rfai-block-callout {
	display: flex;
	align-items: flex-start;
	gap: var(--rfai-spacing-md, 1rem);
	border-radius: var(--rfai-radius-md, 8px);
	padding: var(--rfai-spacing-md, 1rem) var(--rfai-spacing-lg, 1.5rem);
	margin: var(--rfai-spacing-lg, 1.5rem) 0;
	border-left: 4px solid transparent;
}

.rfai-block-callout--info    { background: var(--rfai-callout-info-bg); border-color: var(--rfai-callout-info-border); }
.rfai-block-callout--tip     { background: var(--rfai-callout-tip-bg);  border-color: var(--rfai-callout-tip-border); }
.rfai-block-callout--warning { background: var(--rfai-callout-warn-bg); border-color: var(--rfai-callout-warn-border); }
.rfai-block-callout--success { background: var(--rfai-callout-tip-bg);  border-color: var(--rfai-callout-tip-border); }
.rfai-block-callout--error   { background: var(--rfai-callout-err-bg);  border-color: var(--rfai-callout-err-border); }

.rfai-callout__icon {
	font-size: 1.4rem;
	flex-shrink: 0;
	margin-top: 2px;
}

.rfai-callout__body { flex: 1; }

.rfai-callout__title {
	display: block;
	font-weight: 700;
	margin-bottom: var(--rfai-spacing-xs, 0.25rem);
}

.rfai-callout__content { line-height: var(--rfai-line-height, 1.6); }
.rfai-callout__content p:last-child { margin-bottom: 0; }

/* ==========================================================================
   Tips Block
   ========================================================================== */

.rfai-block-tips { padding: var(--rfai-spacing-lg, 1.5rem) 0; }

.rfai-tip-card-wrap { margin-bottom: var(--rfai-spacing-md, 1rem) !important; }

.rfai-tip-card {
	display: flex;
	align-items: flex-start;
	gap: var(--rfai-spacing-md, 1rem);
	background: var(--rfai-color-surface, #fff);
	border: 1px solid var(--rfai-color-border, rgba(0,0,0,0.08));
	border-radius: var(--rfai-radius-lg, 12px);
	padding: var(--rfai-spacing-lg, 1.5rem);
	transition: box-shadow 0.2s ease;
}

.rfai-tip-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.06); }

.rfai-tip-card__number {
	font-size: 1.5rem;
	font-weight: 800;
	color: var(--rfai-color-primary, #6366f1);
	opacity: 0.25;
	flex-shrink: 0;
	min-width: 2.5rem;
	line-height: 1;
}

.rfai-tip-card__body { flex: 1; }
.rfai-tip-card__title { margin: 0 0 var(--rfai-spacing-xs, 0.25rem) !important; }

/* ==========================================================================
   Comparison Table Block
   ========================================================================== */

.rfai-block-comparison { overflow-x: auto; margin: var(--rfai-spacing-xl, 2rem) 0; }

.rfai-comparison-table {
	width: 100%;
	border-collapse: collapse;
	font-size: var(--rfai-font-size-base, 1rem);
}

.rfai-comparison-table th,
.rfai-comparison-table td {
	padding: var(--rfai-spacing-sm, 0.75rem) var(--rfai-spacing-md, 1rem);
	border: 1px solid var(--rfai-color-border, rgba(0,0,0,0.1));
	text-align: center;
}

.rfai-comparison-table thead th {
	background: var(--rfai-color-primary, #6366f1);
	color: #fff;
	font-weight: 600;
}

.rfai-comparison-table thead th:first-child { text-align: left; }
.rfai-comparison-table tbody th { text-align: left; font-weight: 500; }

.rfai-comparison-table tbody tr:nth-child(even) {
	background: var(--rfai-callout-info-bg, rgba(99,102,241,0.03));
}

.rfai-comparison__cell--yes { color: var(--rfai-color-success, #10b981); font-size: 1.1rem; }
.rfai-comparison__cell--no  { color: var(--rfai-color-danger, #ef4444); font-size: 1.1rem; }

.rfai-comparison__caption {
	caption-side: top;
	font-weight: 700;
	font-size: var(--rfai-font-size-lg, 1.125rem);
	margin-bottom: var(--rfai-spacing-sm, 0.75rem);
	text-align: left;
}

/* ==========================================================================
   Checklist Block
   ========================================================================== */

.rfai-block-checklist { margin: var(--rfai-spacing-lg, 1.5rem) 0; }

.rfai-checklist {
	list-style: none;
	padding: 0;
	margin: 0;
}

.rfai-checklist li {
	position: relative;
	padding-left: calc(var(--rfai-spacing-lg, 1.5rem) + 0.5rem);
	padding-top: var(--rfai-spacing-xs, 0.25rem);
	padding-bottom: var(--rfai-spacing-xs, 0.25rem);
	line-height: var(--rfai-line-height, 1.6);
}

.rfai-checklist li::before {
	content: '✓';
	position: absolute;
	left: 0;
	top: var(--rfai-spacing-xs, 0.25rem);
	font-size: 1rem;
	font-weight: 700;
	color: var(--rfai-checklist-check-color, var(--rfai-color-success, #10b981));
	width: var(--rfai-spacing-lg, 1.5rem);
	text-align: center;
}

/* ==========================================================================
   Timeline Block
   ========================================================================== */

.rfai-block-timeline { margin: var(--rfai-spacing-xl, 2rem) 0; }

.rfai-timeline__step-wrap {
	position: relative;
	margin-bottom: 0 !important;
}

.rfai-timeline__step {
	display: flex;
	gap: var(--rfai-spacing-lg, 1.5rem);
	padding-bottom: var(--rfai-spacing-xl, 2rem);
	position: relative;
}

.rfai-timeline__step::before {
	content: '';
	position: absolute;
	left: 1.25rem;
	top: 2.75rem;
	bottom: 0;
	width: 2px;
	background: var(--rfai-timeline-line-color, var(--rfai-color-border, rgba(0,0,0,0.1)));
}

.rfai-timeline__step-wrap:last-child .rfai-timeline__step::before { display: none; }

.rfai-timeline__marker {
	flex-shrink: 0;
	width: 2.5rem;
	height: 2.5rem;
	border-radius: 50%;
	background: var(--rfai-timeline-marker-bg, var(--rfai-color-primary, #6366f1));
	color: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
	font-weight: 700;
	font-size: 0.8rem;
	z-index: 1;
}

.rfai-timeline__content { flex: 1; padding-top: 0.25rem; }
.rfai-timeline__title   { margin: 0 0 var(--rfai-spacing-xs, 0.25rem) !important; }
.rfai-timeline__desc    { opacity: 0.75; line-height: var(--rfai-line-height, 1.6); }

/* ==========================================================================
   Author Box Block
   ========================================================================== */

.rfai-block-author-box {
	background: var(--rfai-color-surface, #fff);
	border: 1px solid var(--rfai-color-border, rgba(0,0,0,0.08));
	border-radius: var(--rfai-radius-lg, 12px);
	padding: var(--rfai-spacing-xl, 2rem);
}

.rfai-author__layout { align-items: center !important; gap: var(--rfai-spacing-lg, 1.5rem) !important; }

.rfai-author__avatar img {
	border-radius: 50%;
	width: 80px;
	height: 80px;
	object-fit: cover;
}

.rfai-author__name { margin: 0 0 var(--rfai-spacing-xs, 0.25rem) !important; }
.rfai-author__bio  { opacity: 0.75; font-size: var(--rfai-font-size-sm, 0.875rem); }

.rfai-author__social-btn.wp-block-button__link {
	font-size: var(--rfai-font-size-sm, 0.875rem);
	padding: var(--rfai-spacing-xs, 0.25rem) var(--rfai-spacing-sm, 0.75rem);
}

/* ==========================================================================
   Related Posts Block
   ========================================================================== */

.rfai-block-related-posts { margin: var(--rfai-spacing-xl, 2rem) 0; }

.rfai-related-posts-grid { gap: var(--rfai-spacing-md, 1rem) !important; }

.rfai-related-post {
	background: var(--rfai-color-surface, #fff);
	border: 1px solid var(--rfai-color-border, rgba(0,0,0,0.08));
	border-radius: var(--rfai-radius-md, 8px);
	padding: var(--rfai-spacing-md, 1rem);
	transition: box-shadow 0.2s ease;
}

.rfai-related-post:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.06); }

.rfai-related-posts-placeholder {
	opacity: 0.5;
	font-style: italic;
}

/* ==========================================================================
   Accordion Block
   ========================================================================== */

.rfai-block-accordion { margin: var(--rfai-spacing-lg, 1.5rem) 0; }

.rfai-accordion__item {
	border: 1px solid var(--rfai-color-border, rgba(0,0,0,0.1));
	border-radius: var(--rfai-radius-md, 8px);
	margin-bottom: var(--rfai-spacing-xs, 0.5rem);
	overflow: hidden;
}

.rfai-accordion__item summary {
	padding: var(--rfai-spacing-md, 1rem) var(--rfai-spacing-lg, 1.5rem);
	font-weight: 600;
	cursor: pointer;
	list-style: none;
}

.rfai-accordion__item summary::-webkit-details-marker { display: none; }
.rfai-accordion__item p { padding: 0 var(--rfai-spacing-lg, 1.5rem) var(--rfai-spacing-md, 1rem); margin: 0; }

/* ==========================================================================
   Responsive Overrides
   ========================================================================== */

@media (max-width: 600px) {
	.rfai-tip-card    { flex-direction: column; }
	.rfai-tip-card__number { font-size: 1rem; min-width: auto; }

	.rfai-block-callout { flex-direction: column; }

	.rfai-author__layout { flex-direction: column !important; text-align: center; }
	.rfai-author__avatar img { width: 60px; height: 60px; }

	.rfai-cta__inner { padding: var(--rfai-spacing-lg, 1.5rem); }
	.rfai-cta__title { font-size: 1.25rem; }

	.rfai-stat-card__number { font-size: 2rem; }
}

@media (max-width: 768px) {
	.rfai-block-hero { min-height: 280px !important; }
	.rfai-hero__title { font-size: 1.75rem; }
}