/**
 * Intimacy Insight — Homepage Styles (Phase 3A)
 * ------------------------------------------------------------------
 * Covers: hero, generic section scaffolding, featured articles grid
 * with reusable .ii-card component, and Health/Business category grids
 * with .ii-category-card. Consumes design-tokens.css exclusively —
 * zero hardcoded colors. Mobile-first; desktop enhancements gated at
 * 768px and 1024px to match the locked breakpoint system.
 */

/* ====================================================================
   1. GENERIC SECTION SCAFFOLDING (reused by all homepage sections)
   ==================================================================== */

.ii-section {
	padding-block: var(--ii-space-9);
}

.ii-section--alt {
	background-color: var(--ii-color-bg-alt);
}

.ii-section__header {
	max-width: 640px;
	margin-bottom: var(--ii-space-7);
}

.ii-section__eyebrow {
	display: inline-flex;
	align-items: center;
	gap: var(--ii-space-2);
	font-size: var(--ii-text-sm);
	font-weight: var(--ii-weight-semibold);
	text-transform: uppercase;
	letter-spacing: 0.06em;
	margin-bottom: var(--ii-space-3);
}

.ii-section__eyebrow .ii-icon {
	width: 18px;
	height: 18px;
}

.ii-section__eyebrow--health {
	color: var(--ii-color-primary-dark);
}

.ii-section__eyebrow--business {
	color: var(--ii-color-secondary);
}

.ii-section__title {
	font-size: var(--ii-text-3xl);
	font-weight: var(--ii-weight-bold);
	color: var(--ii-color-text-primary);
	line-height: var(--ii-leading-tight);
	margin-bottom: var(--ii-space-3);
}

.ii-section__subtitle {
	font-size: var(--ii-text-lg);
	color: var(--ii-color-text-secondary);
	line-height: var(--ii-leading-relaxed);
	margin: 0;
}

.ii-section__footer {
	margin-top: var(--ii-space-7);
	text-align: center;
}

/* ====================================================================
   2. HERO
   ==================================================================== */

.ii-hero {
	position: relative;
	overflow: hidden;
	background-color: var(--ii-color-bg-alt);
	padding-block: var(--ii-space-9) var(--ii-space-10);
}

.ii-hero__pattern {
	position: absolute;
	inset: 0;
	pointer-events: none;
	background-image:
		radial-gradient(circle at 20% 20%, rgba(13, 148, 136, 0.06) 0, transparent 40%),
		radial-gradient(circle at 80% 0%, rgba(30, 58, 138, 0.05) 0, transparent 45%);
	background-repeat: no-repeat;
}

.ii-hero__inner {
	position: relative;
	max-width: 820px;
	text-align: center;
}

.ii-hero__eyebrow {
	display: inline-block;
	font-size: var(--ii-text-sm);
	font-weight: var(--ii-weight-semibold);
	text-transform: uppercase;
	letter-spacing: 0.08em;
	color: var(--ii-color-primary-dark);
	margin-bottom: var(--ii-space-4);
}

.ii-hero__heading {
	font-size: var(--ii-text-4xl);
	font-weight: var(--ii-weight-bold);
	line-height: var(--ii-leading-tight);
	color: var(--ii-color-text-primary);
	margin-bottom: var(--ii-space-5);
	letter-spacing: -0.01em;
}

.ii-hero__subhead {
	font-size: var(--ii-text-lg);
	line-height: var(--ii-leading-relaxed);
	color: var(--ii-color-text-secondary);
	max-width: 640px;
	margin: 0 auto var(--ii-space-7);
}

/* Hero search */
.ii-hero__search {
	display: flex;
	align-items: center;
	gap: var(--ii-space-2);
	max-width: 620px;
	margin: 0 auto;
	background-color: var(--ii-color-bg);
	border: 1px solid var(--ii-color-border);
	border-radius: var(--ii-radius-full);
	padding: var(--ii-space-2) var(--ii-space-2) var(--ii-space-2) var(--ii-space-5);
	box-shadow: var(--ii-shadow-md);
	transition: box-shadow var(--ii-transition-fast),
	            border-color var(--ii-transition-fast);
}

.ii-hero__search:focus-within {
	border-color: var(--ii-color-primary);
	box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.12), var(--ii-shadow-md);
}

.ii-hero__search-icon {
	display: flex;
	color: var(--ii-color-text-secondary);
	flex-shrink: 0;
}

.ii-hero__search-icon .ii-icon {
	width: 22px;
	height: 22px;
}

.ii-hero__search-input {
	flex: 1;
	border: none;
	outline: none;
	background: transparent;
	font-family: var(--ii-font-body);
	font-size: var(--ii-text-base);
	color: var(--ii-color-text-primary);
	min-width: 0;
}

.ii-hero__search-input::placeholder {
	color: var(--ii-color-text-secondary);
}

.ii-hero__search-submit {
	flex-shrink: 0;
	border-radius: var(--ii-radius-full);
}

.ii-hero__cta {
	margin-top: var(--ii-space-6);
}

.ii-hero__quick-links {
	margin-top: var(--ii-space-6);
	font-size: var(--ii-text-sm);
	color: var(--ii-color-text-secondary);
	display: flex;
	flex-wrap: wrap;
	gap: var(--ii-space-3);
	justify-content: center;
	align-items: center;
}

.ii-hero__quick-label {
	font-weight: var(--ii-weight-medium);
}

.ii-hero__quick-links a {
	color: var(--ii-color-primary-dark);
	font-weight: var(--ii-weight-medium);
	text-decoration: none;
	padding: 2px var(--ii-space-3);
	border: 1px solid var(--ii-color-border);
	border-radius: var(--ii-radius-full);
	background-color: var(--ii-color-bg);
	transition: border-color var(--ii-transition-fast),
	            color var(--ii-transition-fast);
}

.ii-hero__quick-links a:hover {
	border-color: var(--ii-color-primary);
}

/* ====================================================================
   3. REUSABLE ARTICLE CARD (.ii-card)
   ==================================================================== */

.ii-card {
	display: flex;
	flex-direction: column;
	background-color: var(--ii-color-bg);
	border: 1px solid var(--ii-color-border);
	border-radius: var(--ii-radius-lg);
	overflow: hidden;
	transition: transform var(--ii-transition-base),
	            box-shadow var(--ii-transition-base),
	            border-color var(--ii-transition-base);
}

.ii-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--ii-shadow-lg);
	border-color: transparent;
}

.ii-card__image-link {
	display: block;
	aspect-ratio: 16 / 9;
	overflow: hidden;
	background-color: var(--ii-color-bg-alt);
}

.ii-card__image-link img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform var(--ii-transition-slow);
}

.ii-card:hover .ii-card__image-link img {
	transform: scale(1.04);
}

.ii-card__image-placeholder {
	display: block;
	width: 100%;
	height: 100%;
	background: linear-gradient(135deg, var(--ii-color-bg-alt), var(--ii-color-border));
}

.ii-card__body {
	display: flex;
	flex-direction: column;
	gap: var(--ii-space-3);
	padding: var(--ii-space-5);
	flex: 1;
}

.ii-card__badge {
	display: inline-block;
	align-self: flex-start;
	font-size: var(--ii-text-xs);
	font-weight: var(--ii-weight-semibold);
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--ii-color-primary-dark);
	background-color: var(--ii-color-primary-light);
	padding: 4px var(--ii-space-3);
	border-radius: var(--ii-radius-full);
	text-decoration: none;
	transition: background-color var(--ii-transition-fast);
}

.ii-card__badge:hover {
	background-color: var(--ii-color-primary);
	color: #fff;
}

.ii-card__title {
	font-size: var(--ii-text-lg);
	font-weight: var(--ii-weight-semibold);
	line-height: var(--ii-leading-tight);
	margin: 0;
}

.ii-card__title a {
	color: var(--ii-color-text-primary);
	text-decoration: none;
	transition: color var(--ii-transition-fast);
}

.ii-card__title a:hover {
	color: var(--ii-color-primary-dark);
}

.ii-card__excerpt {
	font-size: var(--ii-text-sm);
	color: var(--ii-color-text-secondary);
	line-height: var(--ii-leading-relaxed);
	margin: 0;
}

.ii-card__meta-bottom {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--ii-space-2);
	margin-top: auto;
	padding-top: var(--ii-space-3);
	font-size: var(--ii-text-xs);
	color: var(--ii-color-text-secondary);
}

.ii-card__author {
	display: inline-flex;
	align-items: center;
	gap: var(--ii-space-2);
}

.ii-card__avatar {
	border-radius: var(--ii-radius-full);
	width: 24px;
	height: 24px;
}

.ii-card__author-name {
	font-weight: var(--ii-weight-medium);
	color: var(--ii-color-text-secondary);
}

.ii-card__dot {
	color: var(--ii-color-border);
}

/* ====================================================================
   4. FEATURED ARTICLES GRID
   ==================================================================== */

.ii-featured__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--ii-space-5);
}

.ii-card--lead .ii-card__title {
	font-size: var(--ii-text-xl);
}

@media (min-width: 768px) {
	.ii-featured__grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (min-width: 1024px) {
	.ii-featured__grid {
		grid-template-columns: 1.4fr 1fr 1fr;
		grid-auto-rows: 1fr;
	}

	/* Lead card spans two rows on the left column for a premium
	   editorial layout. */
	.ii-card--lead {
		grid-row: span 2;
	}

	.ii-card--lead .ii-card__title {
		font-size: var(--ii-text-2xl);
	}
}

/* ====================================================================
   5. CATEGORY CARDS (.ii-category-card)
   ==================================================================== */

.ii-categories__grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: var(--ii-space-4);
	list-style: none;
	margin: 0;
	padding: 0;
}

.ii-category-card {
	display: flex;
}

.ii-category-card__link {
	display: flex;
	flex-direction: column;
	gap: var(--ii-space-2);
	width: 100%;
	padding: var(--ii-space-5);
	background-color: var(--ii-color-bg);
	border: 1px solid var(--ii-color-border);
	border-radius: var(--ii-radius-lg);
	text-decoration: none;
	transition: transform var(--ii-transition-base),
	            box-shadow var(--ii-transition-base),
	            border-color var(--ii-transition-base);
}

.ii-category-card__link:hover,
.ii-category-card__link:focus-visible {
	transform: translateY(-3px);
	box-shadow: var(--ii-shadow-md);
	border-color: transparent;
}

.ii-category-card__icon {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 48px;
	height: 48px;
	border-radius: var(--ii-radius-md);
	margin-bottom: var(--ii-space-2);
}

.ii-category-card__icon .ii-icon {
	width: 24px;
	height: 24px;
}

.ii-category-card__icon--health {
	color: var(--ii-color-primary-dark);
	background-color: var(--ii-color-primary-light);
}

.ii-category-card__icon--business {
	color: var(--ii-color-secondary);
	background-color: rgba(30, 58, 138, 0.08);
}

.ii-category-card__name {
	font-size: var(--ii-text-lg);
	font-weight: var(--ii-weight-semibold);
	color: var(--ii-color-text-primary);
	line-height: var(--ii-leading-tight);
}

.ii-category-card__desc {
	font-size: var(--ii-text-sm);
	color: var(--ii-color-text-secondary);
	line-height: var(--ii-leading-normal);
}

.ii-category-card__count {
	margin-top: auto;
	padding-top: var(--ii-space-2);
	font-size: var(--ii-text-xs);
	font-weight: var(--ii-weight-medium);
	color: var(--ii-color-text-secondary);
}

@media (min-width: 768px) {
	.ii-categories__grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

@media (min-width: 1024px) {
	.ii-hero__heading {
		font-size: var(--ii-text-5xl);
	}

	.ii-categories__grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

/* Large button variant used in hero CTA */
.ii-btn--lg {
	padding: 14px var(--ii-space-6);
	font-size: var(--ii-text-base);
}

/* ====================================================================
   6. DARK MODE
   ==================================================================== */

[data-theme="dark"] .ii-hero,
[data-theme="dark"] .ii-section--alt {
	background-color: var(--ii-color-bg-alt);
}

[data-theme="dark"] .ii-card,
[data-theme="dark"] .ii-category-card__link,
[data-theme="dark"] .ii-hero__search,
[data-theme="dark"] .ii-hero__quick-links a {
	background-color: var(--ii-color-bg);
	border-color: var(--ii-color-border);
}

[data-theme="dark"] .ii-category-card__icon--business {
	background-color: rgba(59, 130, 246, 0.15);
}

/* ====================================================================
   13. SCROLL REVEAL (IntersectionObserver-driven, prefers-reduced-motion safe)
   ==================================================================== */

.ii-reveal {
	opacity: 0;
	transform: translateY(16px);
	transition: opacity 0.5s ease, transform 0.5s ease;
}

.ii-reveal.is-visible {
	opacity: 1;
	transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
	.ii-reveal {
		opacity: 1;
		transform: none;
		transition: none;
	}
}

/* ====================================================================
   14. SECTION HEADER — ROW VARIANT (Latest Articles)
   ==================================================================== */

.ii-section__header--row {
	display: flex;
	flex-wrap: wrap;
	align-items: flex-end;
	justify-content: space-between;
	gap: var(--ii-space-4);
}

.ii-section__eyebrow--accent {
	color: var(--ii-color-accent);
}

/* ====================================================================
   15. LATEST ARTICLES GRID
   ==================================================================== */

.ii-latest__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--ii-space-5);
}

@media (min-width: 768px) {
	.ii-latest__grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (min-width: 1024px) {
	.ii-latest__grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

@media (min-width: 1536px) {
	.ii-latest__grid {
		grid-template-columns: repeat(4, 1fr);
	}
}

/* ====================================================================
   16. TRENDING ARTICLES
   ==================================================================== */

.ii-trending__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--ii-space-5);
}

.ii-trending__item {
	position: relative;
	display: flex;
	gap: var(--ii-space-4);
	align-items: flex-start;
}

.ii-trending__rank {
	flex-shrink: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	width: 36px;
	height: 36px;
	border-radius: var(--ii-radius-full);
	background-color: var(--ii-color-bg);
	border: 2px solid var(--ii-color-accent);
	color: var(--ii-color-accent);
	font-family: var(--ii-font-heading);
	font-weight: var(--ii-weight-bold);
	font-size: var(--ii-text-sm);
}

.ii-trending__card {
	flex: 1;
	min-width: 0;
}

.ii-trending__card .ii-card {
	border: none;
	background: none;
}

.ii-trending__card .ii-card:hover {
	transform: none;
	box-shadow: none;
}

.ii-trending__card .ii-card__body {
	padding: 0;
}

@media (min-width: 768px) {
	.ii-trending__grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (min-width: 1024px) {
	.ii-trending__grid {
		grid-template-columns: repeat(4, 1fr);
	}

	.ii-trending__item {
		flex-direction: column;
	}

	.ii-trending__rank {
		margin-bottom: var(--ii-space-2);
	}
}

/* ====================================================================
   17. NEWSLETTER SECTION (homepage)
   ==================================================================== */

.ii-newsletter-section {
	padding-block: var(--ii-space-8);
}

.ii-newsletter-section__panel {
	background-color: var(--ii-color-primary-dark);
	border-radius: var(--ii-radius-xl);
	padding: var(--ii-space-8) var(--ii-space-6);
	text-align: center;
	color: #fff;
}

.ii-newsletter-section__icon {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 56px;
	height: 56px;
	border-radius: var(--ii-radius-full);
	background-color: rgba(255, 255, 255, 0.15);
	margin-bottom: var(--ii-space-4);
}

.ii-newsletter-section__icon .ii-icon {
	width: 26px;
	height: 26px;
	color: #fff;
}

.ii-newsletter-section__title {
	font-size: var(--ii-text-2xl);
	font-weight: var(--ii-weight-bold);
	color: #fff;
	margin-bottom: var(--ii-space-3);
}

.ii-newsletter-section__subtitle {
	font-size: var(--ii-text-base);
	color: rgba(255, 255, 255, 0.85);
	max-width: 480px;
	margin: 0 auto var(--ii-space-6);
	line-height: var(--ii-leading-relaxed);
}

.ii-newsletter-form--large .ii-newsletter-form__row {
	display: flex;
	flex-direction: column;
	gap: var(--ii-space-3);
	max-width: 480px;
	margin: 0 auto;
}

@media (min-width: 768px) {
	.ii-newsletter-form--large .ii-newsletter-form__row {
		flex-direction: row;
	}
}

.ii-newsletter-form--large .ii-newsletter-form__input {
	flex: 1;
	background-color: #fff;
}

.ii-newsletter-form--large .ii-newsletter-form__submit {
	position: relative;
	white-space: nowrap;
}

.ii-newsletter-form__privacy {
	margin-top: var(--ii-space-4);
	font-size: var(--ii-text-xs);
	color: rgba(255, 255, 255, 0.7);
}

/* Honeypot field — visually hidden but still present/readable in the
   accessibility tree removal is intentional: aria-hidden + off-screen
   positioning (not display:none) is what makes it effective against
   unsophisticated bots while remaining invisible to sighted users. */
.ii-hp-field {
	position: absolute;
	left: -9999px;
	top: -9999px;
	width: 1px;
	height: 1px;
	overflow: hidden;
}

/* Loading / success / error states */
.ii-newsletter-form__spinner {
	display: none;
	width: 16px;
	height: 16px;
	border: 2px solid rgba(255, 255, 255, 0.4);
	border-top-color: #fff;
	border-radius: 50%;
	margin-left: var(--ii-space-2);
}

.ii-newsletter-form.is-loading .ii-newsletter-form__spinner {
	display: inline-block;
	animation: ii-spin 0.7s linear infinite;
}

.ii-newsletter-form.is-loading .ii-newsletter-form__submit-label {
	opacity: 0.8;
}

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

@media (prefers-reduced-motion: reduce) {
	.ii-newsletter-form.is-loading .ii-newsletter-form__spinner {
		animation: none;
	}
}

.ii-newsletter-form--large .ii-newsletter-form__message {
	margin-top: var(--ii-space-3);
	font-size: var(--ii-text-sm);
	font-weight: var(--ii-weight-medium);
	min-height: 1.2em;
}

.ii-newsletter-form--large .ii-newsletter-form__message.is-success {
	color: #fff;
}

.ii-newsletter-form--large .ii-newsletter-form__message.is-error {
	color: #fff;
	font-weight: var(--ii-weight-bold);
	text-decoration: underline;
}

/* Footer newsletter form (compact variant, Phase 2) also gets loading
   state support now that the AJAX handler is live. */
.ii-newsletter-form.is-loading .ii-newsletter-form__submit {
	opacity: 0.8;
	cursor: wait;
}

/* ====================================================================
   18. AUTHOR SPOTLIGHT
   ==================================================================== */

.ii-author-spotlight__panel {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--ii-space-6);
	background-color: var(--ii-color-bg);
	border: 1px solid var(--ii-color-border);
	border-radius: var(--ii-radius-xl);
	padding: var(--ii-space-7);
}

.ii-author-spotlight__profile {
	display: flex;
	align-items: center;
	gap: var(--ii-space-5);
}

.ii-author-spotlight__photo {
	flex-shrink: 0;
	width: 88px;
	height: 88px;
	border-radius: var(--ii-radius-full);
	overflow: hidden;
	border: 3px solid var(--ii-color-primary-light);
}

.ii-author-spotlight__photo img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.ii-author-spotlight__eyebrow {
	display: block;
	font-size: var(--ii-text-xs);
	font-weight: var(--ii-weight-semibold);
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--ii-color-primary-dark);
	margin-bottom: var(--ii-space-1);
}

.ii-author-spotlight__name {
	font-size: var(--ii-text-xl);
	font-weight: var(--ii-weight-bold);
	color: var(--ii-color-text-primary);
	margin: 0 0 2px;
}

.ii-author-spotlight__credentials {
	font-size: var(--ii-text-sm);
	color: var(--ii-color-text-secondary);
	margin: 0 0 var(--ii-space-3);
}

.ii-author-spotlight__social {
	display: flex;
	gap: var(--ii-space-2);
}

.ii-author-spotlight__bio {
	font-size: var(--ii-text-base);
	color: var(--ii-color-text-secondary);
	line-height: var(--ii-leading-relaxed);
}

.ii-author-spotlight__bio p {
	margin: 0;
}

.ii-author-spotlight__articles-title {
	font-size: var(--ii-text-sm);
	font-weight: var(--ii-weight-semibold);
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--ii-color-text-secondary);
	margin-bottom: var(--ii-space-3);
}

.ii-author-spotlight__articles-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: var(--ii-space-2);
}

.ii-author-spotlight__articles-list a {
	font-size: var(--ii-text-sm);
	font-weight: var(--ii-weight-medium);
	color: var(--ii-color-primary-dark);
	text-decoration: none;
}

.ii-author-spotlight__articles-list a:hover {
	text-decoration: underline;
}

@media (min-width: 1024px) {
	.ii-author-spotlight__panel {
		grid-template-columns: 280px 1fr 260px;
		align-items: center;
	}
}

/* ====================================================================
   19. DARK MODE — PHASE 3B ADDITIONS
   ==================================================================== */

[data-theme="dark"] .ii-author-spotlight__panel,
[data-theme="dark"] .ii-trending__rank {
	background-color: var(--ii-color-bg);
	border-color: var(--ii-color-border);
}

[data-theme="dark"] .ii-newsletter-form--large .ii-newsletter-form__input {
	background-color: #fff;
	color: var(--ii-color-text-primary);
}