/**
 * Kanji Archive — CSS
 * Grid de kanjis con filtros. Hereda variables de Velox.
 */

/* ── Reutiliza las variables del single ──────────────────────────────────── */
.kanji-archive-main {
	--k-primary:     var(--color-primary,       #CB4B40);
	--k-primary-dark:var(--color-primary-dark,  #B22E28);
	--k-surface:     var(--color-surface,        #ffffff);
	--k-glass:       var(--color-surface-glass,  rgba(255,255,255,0.65));
	--k-border:      var(--glass-border,         rgba(0,0,0,0.06));
	--k-blur:        var(--glass-blur,           blur(20px) saturate(180%));
	--k-shadow:      var(--shadow-card,          0 4px 24px rgba(0,0,0,0.06));
	--k-text:        var(--color-on-surface,     #1a1a2e);
	--k-muted:       var(--color-on-surface-variant, #555566);
	--k-neutral:     var(--color-neutral,        #f5f4f2);
	--k-radius-sm:   var(--rounded-sm,  6px);
	--k-radius-md:   var(--rounded-md,  12px);
	--k-radius-lg:   var(--rounded-lg,  20px);
	--k-radius-full: var(--rounded-full, 9999px);
	--k-ease:        var(--ease-out,    cubic-bezier(0.16,1,0.3,1));
	font-family:     var(--font-body, system-ui, -apple-system, sans-serif);
}

/* ── Wrapper ─────────────────────────────────────────────────────────────── */
.kanji-archive-wrapper {
	max-width: 1200px;
	margin-inline: auto;
	padding: clamp(1rem, 4vw, 2.5rem) clamp(1rem, 3vw, 2rem);
	display: flex;
	flex-direction: column;
	gap: 2rem;
}

/* ── Header del archivo ──────────────────────────────────────────────────── */
.kanji-archive-header {
	text-align: center;
}

.kanji-archive-title {
	font-size: clamp(1.8rem, 4vw, 2.8rem);
	font-weight: 900;
	color: var(--k-text);
	margin: 0 0 8px;
	letter-spacing: -0.02em;
}

.kanji-archive-desc {
	color: var(--k-muted);
	font-size: 0.9rem;
	margin: 0;
}

/* ── Filtros ─────────────────────────────────────────────────────────────── */
.kanji-filters {
	display: flex;
	flex-direction: column;
	gap: 1.5rem;
	align-items: center;
	background: var(--k-glass);
	-webkit-backdrop-filter: var(--k-blur);
	backdrop-filter: var(--k-blur);
	border: 1px solid var(--k-border);
	border-radius: var(--k-radius-lg);
	padding: 24px;
	box-shadow: var(--k-shadow);
	margin-bottom: 1rem;
}

.kanji-filter-row {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	justify-content: center;
	align-items: center;
}

.kanji-filter-group {
	display: flex;
	align-items: center;
	position: relative;
}

.kanji-filter-group--search {
	width: 100%;
	max-width: 600px;
}

.kanji-search-container {
	position: relative;
	width: 100%;
}

.kanji-filter-input {
	width: 100%;
	padding: 12px 20px;
	border: 1.5px solid var(--k-border);
	border-radius: var(--k-radius-full);
	font-family: inherit;
	font-size: 1rem;
	color: var(--k-text);
	background: var(--k-surface);
	transition: border-color 200ms var(--k-ease), box-shadow 200ms var(--k-ease);
}

.kanji-filter-input:focus {
	outline: none;
	border-color: var(--k-primary);
	box-shadow: 0 0 0 4px rgba(203,75,64,0.1);
}

/* ── Sugerencias de búsqueda ────────────────────────────────────────────── */
.kanji-search-suggestions {
	position: absolute;
	top: calc(100% + 8px);
	left: 0;
	right: 0;
	background: var(--k-surface);
	border: 1px solid var(--k-border);
	border-radius: var(--k-radius-md);
	box-shadow: 0 10px 30px rgba(0,0,0,0.1);
	z-index: 100;
	max-height: 400px;
	overflow-y: auto;
	display: none; /* Se activa por JS */
	-webkit-backdrop-filter: var(--k-blur);
	backdrop-filter: var(--k-blur);
}

.kanji-suggestion-item {
	display: flex;
	align-items: center;
	gap: 12px;
	padding: 10px 16px;
	text-decoration: none;
	color: var(--k-text);
	border-bottom: 1px solid var(--k-border);
	transition: background 200ms;
}

.kanji-suggestion-item:last-child {
	border-bottom: none;
}

.kanji-suggestion-item:hover {
	background: rgba(203,75,64,0.05);
}

.kanji-suggestion-char {
	font-size: 1.4rem;
	font-weight: 700;
	color: var(--k-primary);
	min-width: 32px;
}

.kanji-suggestion-info {
	display: flex;
	flex-direction: column;
	overflow: hidden;
}

.kanji-suggestion-sig {
	font-size: 0.85rem;
	font-weight: 600;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.kanji-suggestion-romaji {
	font-size: 0.7rem;
	color: var(--k-muted);
}

.kanji-filter-select {
	padding: 10px 16px;
	border: 1.5px solid var(--k-border);
	border-radius: var(--k-radius-full);
	font-family: inherit;
	font-size: 0.88rem;
	color: var(--k-text);
	background: var(--k-surface);
	cursor: pointer;
	appearance: none;
	-webkit-appearance: none;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='%23555566'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 12px center;
	padding-right: 32px;
	transition: border-color 200ms var(--k-ease);
}

.kanji-filter-select:focus {
	outline: none;
	border-color: var(--k-primary);
}

.kanji-filter-btn {
	padding: 10px 24px;
	background: var(--k-primary);
	color: #fff;
	border: none;
	border-radius: var(--k-radius-full);
	font-family: inherit;
	font-size: 0.88rem;
	font-weight: 700;
	cursor: pointer;
	transition: background 200ms var(--k-ease), transform 200ms var(--k-ease);
}

.kanji-filter-btn:hover {
	background: var(--k-primary-dark);
	transform: translateY(-1px);
}

.kanji-filter-clear {
	padding: 10px 16px;
	color: var(--k-muted);
	font-size: 0.82rem;
	font-weight: 600;
	text-decoration: none;
	border-radius: var(--k-radius-full);
	transition: color 200ms, background 200ms;
}

.kanji-filter-clear:hover {
	color: var(--k-primary);
	background: rgba(203,75,64,0.08);
}

/* ── Grid de kanjis ──────────────────────────────────────────────────────── */
.kanji-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
	gap: 12px;
}

@media (max-width: 480px) {
	.kanji-grid {
		grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
		gap: 8px;
	}
}

/* ── Item del grid ───────────────────────────────────────────────────────── */
.kanji-grid-item {
	aspect-ratio: 1;
}

.kanji-grid-link {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 4px;
	width: 100%;
	height: 100%;
	padding: 12px 8px;
	background: var(--k-glass);
	-webkit-backdrop-filter: var(--k-blur);
	backdrop-filter: var(--k-blur);
	border: 1px solid var(--k-border);
	border-radius: var(--k-radius-md);
	text-decoration: none;
	color: var(--k-text);
	box-shadow: var(--k-shadow);
	transition:
		transform    200ms var(--k-ease),
		box-shadow   200ms var(--k-ease),
		background   200ms var(--k-ease),
		border-color 200ms var(--k-ease);
	position: relative;
	overflow: hidden;
}

.kanji-grid-link::before {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(135deg, rgba(203,75,64,0) 0%, rgba(203,75,64,0.04) 100%);
	opacity: 0;
	transition: opacity 200ms var(--k-ease);
}

.kanji-grid-link:hover {
	transform: translateY(-3px) scale(1.02);
	box-shadow: 0 12px 32px rgba(203,75,64,0.15);
	border-color: rgba(203,75,64,0.2);
}

.kanji-grid-link:hover::before {
	opacity: 1;
}

.kanji-grid-link:focus-visible {
	outline: 3px solid var(--k-primary);
	outline-offset: 2px;
}

/* Carácter kanji grande */
.kanji-grid-char {
	font-size: clamp(2rem, 5vw, 2.8rem);
	font-weight: 900;
	color: var(--k-text);
	line-height: 1;
	transition: color 200ms var(--k-ease);
}

.kanji-grid-link:hover .kanji-grid-char {
	color: var(--k-primary);
}

/* Romaji */
.kanji-grid-romaji {
	font-size: 0.65rem;
	font-weight: 600;
	color: var(--k-primary);
	letter-spacing: 0.04em;
	text-align: center;
	line-height: 1.2;
}

/* Significado */
.kanji-grid-sig {
	display: none; /* Solo visible en hover en pantallas grandes */
	font-size: 0.6rem;
	color: var(--k-muted);
	text-align: center;
	line-height: 1.3;
	max-width: 100%;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

@media (min-width: 900px) {
	.kanji-grid-link:hover .kanji-grid-sig {
		display: block;
	}
}

/* Badge JLPT */
.kanji-grid-badge {
	position: absolute;
	top: 6px;
	right: 6px;
	font-size: 0.58rem;
	font-weight: 700;
	padding: 2px 6px;
	border-radius: var(--k-radius-full);
	background: rgba(203,75,64,0.1);
	color: var(--k-primary);
	border: 1px solid rgba(203,75,64,0.15);
}

/* ── Paginación ──────────────────────────────────────────────────────────── */
.kanji-pagination {
	display: flex;
	justify-content: center;
	flex-wrap: wrap;
	gap: 8px;
}

.kanji-page-link {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 38px;
	height: 38px;
	border-radius: var(--k-radius-full);
	background: var(--k-glass);
	-webkit-backdrop-filter: var(--k-blur);
	backdrop-filter: var(--k-blur);
	border: 1px solid var(--k-border);
	color: var(--k-text);
	font-weight: 700;
	font-size: 0.88rem;
	text-decoration: none;
	transition: background 200ms var(--k-ease), transform 200ms var(--k-ease);
}

.kanji-page-link:hover {
	background: var(--k-primary);
	color: #fff;
	border-color: var(--k-primary);
	transform: translateY(-2px);
}

.kanji-page-link--active {
	background: var(--k-primary);
	color: #fff;
	border-color: var(--k-primary);
	box-shadow: 0 4px 12px rgba(203,75,64,0.3);
}

/* ── Estado vacío ────────────────────────────────────────────────────────── */
.kanji-empty {
	text-align: center;
	padding: 4rem 2rem;
	color: var(--k-muted);
}

/* ── Dark mode ───────────────────────────────────────────────────────────── */
body:has(#dark-toggle:checked) .kanji-archive-main {
	--k-surface:  #1e1e2e;
	--k-glass:    rgba(30,30,46,0.8);
	--k-border:   rgba(255,255,255,0.08);
	--k-text:     #e8e8f0;
	--k-muted:    #9090aa;
	--k-neutral:  #2a2a3e;
}

/* ── Animación de entrada del grid ───────────────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
	.kanji-grid-item {
		animation: kanjiGridIn 0.4s var(--k-ease) both;
	}

	/* Delay escalonado para los primeros 12 items */
	.kanji-grid-item:nth-child(1)  { animation-delay: 0.02s; }
	.kanji-grid-item:nth-child(2)  { animation-delay: 0.04s; }
	.kanji-grid-item:nth-child(3)  { animation-delay: 0.06s; }
	.kanji-grid-item:nth-child(4)  { animation-delay: 0.08s; }
	.kanji-grid-item:nth-child(5)  { animation-delay: 0.10s; }
	.kanji-grid-item:nth-child(6)  { animation-delay: 0.12s; }
	.kanji-grid-item:nth-child(7)  { animation-delay: 0.06s; }
	.kanji-grid-item:nth-child(8)  { animation-delay: 0.08s; }
	.kanji-grid-item:nth-child(n+9){ animation-delay: 0s; }

	@keyframes kanjiGridIn {
		from { opacity: 0; transform: scale(0.9) translateY(8px); }
		to   { opacity: 1; transform: scale(1) translateY(0); }
	}
}