/**
 * Coin Price — Frontend Styles
 *
 * Modern financial UI based on the project design spec.
 * Desktop: premium table inside a card container.
 * Mobile: independent cards per coin.
 */

/* ========================================
   CSS Variables
   ======================================== */
:root {
	--cp-bg: #F8FAFC;
	--cp-card: #FFFFFF;
	--cp-text: #0F172A;
	--cp-muted: #64748B;
	--cp-border: #E5E7EB;
	--cp-success: #16A34A;
	--cp-success-bg: #DCFCE7;
	--cp-danger: #DC2626;
	--cp-danger-bg: #FEE2E2;
	--cp-blue: #2563EB;
	--cp-gold: #D4AF37;
	--cp-gold-light: #F9F1D8;

	--cp-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
	--cp-shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08);
	--cp-radius: 20px;
	--cp-gap: 12px;
	--cp-transition: 250ms ease;
}

/* ========================================
   Table Wrapper
   ======================================== */
.coin-price-table-wrap {
	font-family: inherit;
	max-width: 100%;
	margin: 2rem 0;
}

.coin-price-table__title {
	margin: 0 0 8px;
	font-size: 1.5rem;
	font-weight: 700;
	color: var(--cp-text);
}

.coin-price-table__updated {
	margin: 0 0 20px;
	font-size: 0.875rem;
	color: var(--cp-muted);
}

/* ========================================
   Desktop List
   ======================================== */
.coin-price-list {
	display: flex;
	flex-direction: column;
	gap: var(--cp-gap);
}

.coin-price-list__header {
	display: grid;
	grid-template-columns: var(--cp-cols);
	gap: 16px;
	padding: 14px 24px;
	font-weight: 600;
	font-size: 0.8rem;
	color: var(--cp-muted);
	text-transform: uppercase;
	letter-spacing: 0.04em;
	white-space: nowrap;
}

/* Each coin is a floating card */
.coin-price-item {
	background: var(--cp-card);
	border-radius: var(--cp-radius);
	box-shadow: var(--cp-shadow-sm);
	padding: 18px 24px;
	transition: box-shadow var(--cp-transition), transform var(--cp-transition);
}

.coin-price-item:hover {
	box-shadow: var(--cp-shadow-hover);
	transform: translateY(-2px);
}

.coin-price-row {
	display: grid;
	grid-template-columns: var(--cp-cols);
	gap: 16px;
	align-items: center;
}

/* Coin image */
.coin-price-table__image {
	display: flex;
	align-items: center;
	justify-content: center;
}

.coin-price-table__image img {
	width: 48px;
	height: 48px;
	border-radius: 50%;
	object-fit: cover;
	background: var(--cp-gold-light);
	border: 2px solid var(--cp-gold);
	transition: transform var(--cp-transition);
}

.coin-price-item:hover .coin-price-table__image img {
	transform: scale(1.08);
}

.coin-price-table__no-image {
	color: var(--cp-muted);
}

/* Name & specs */
.coin-price-table__name {
	font-size: 1.05rem;
	font-weight: 700;
	color: var(--cp-text);
}

.coin-price-table__specs {
	display: block;
	margin-top: 4px;
	font-size: 0.8rem;
	font-weight: 400;
	color: var(--cp-muted);
}

/* Price stack (price + currency + change) */
.coin-price-table__price-stack {
	display: inline-flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: 4px 6px;
}

/* Prices */
.coin-price-table__price {
	font-size: 1.1rem;
	font-weight: 800;
	font-variant-numeric: tabular-nums;
	color: var(--cp-text);
}

.coin-price-table__currency {
	font-size: 0.8rem;
	font-weight: 400;
	color: var(--cp-muted);
	margin-inline-start: 3px;
}

.coin-price-table__buy,
.coin-price-table__sell,
.coin-price-table__chart-action {
	text-align: end;
}

/* Price change badges */
.coin-price-table__price-change {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	padding: 5px 12px;
	border-radius: 999px;
	font-size: 0.82rem;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
}

.coin-price-table__price-change.is-up {
	background: var(--cp-success-bg);
	color: var(--cp-success);
}

.coin-price-table__price-change.is-down {
	background: var(--cp-danger-bg);
	color: var(--cp-danger);
}

.coin-price-table__price-change.is-flat {
	background: #F1F5F9;
	color: var(--cp-muted);
}

.coin-price-table__arrow {
	display: inline-block;
	width: 0;
	height: 0;
	border-style: solid;
	border-width: 0 4px 5px 4px;
	border-color: transparent transparent currentColor transparent;
}

.coin-price-table__price-change.is-down .coin-price-table__arrow {
	transform: rotate(180deg);
}

.coin-price-table__price-change.is-flat .coin-price-table__arrow {
	width: 8px;
	height: 2px;
	border: none;
	background-color: currentColor;
	border-radius: 1px;
	transform: none;
}

/* Chart toggle button */
.coin-price-table__chart-head {
	width: 56px;
}

.coin-price-table__chart-toggle {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	padding: 0;
	border: 1px solid var(--cp-border);
	border-radius: 10px;
	background: #F1F5F9;
	color: var(--cp-muted);
	cursor: pointer;
	transition: background var(--cp-transition), border-color var(--cp-transition), color var(--cp-transition);
}

.coin-price-table__chart-toggle:hover {
	background: #EBF0FF;
	border-color: var(--cp-blue);
	color: var(--cp-blue);
}

.coin-price-table__chart-toggle[aria-expanded="true"] {
	background: var(--cp-gold-light);
	border-color: var(--cp-gold);
	color: var(--cp-gold);
}

.coin-price-table__chart-toggle:focus-visible {
	outline: 2px solid var(--cp-blue);
	outline-offset: 2px;
}

.coin-price-table__chart-icon {
	width: 22px;
	height: 22px;
	fill: none;
	stroke: currentColor;
	stroke-width: 1.8;
	stroke-linecap: round;
	stroke-linejoin: round;
}

/* Accessibility helper */
.coin-price-sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* ========================================
   Inline Chart Row (expand / collapse)
   ======================================== */
.coin-price-table__chart-row {
	display: none;
}

.coin-price-table__chart-row:not([hidden]) {
	display: block;
	margin-top: 16px;
	padding-top: 16px;
	border-top: 1px solid var(--cp-border);
}

.coin-price-table__chart-inner {
	max-height: 0;
	opacity: 0;
	overflow: hidden;
	transition: max-height 0.35s ease, opacity 0.3s ease;
}

.coin-price-table__chart-row:not([hidden]) .coin-price-table__chart-inner {
	max-height: 1200px;
	opacity: 1;
}

/* ========================================
   Stand-alone Chart Block
   ======================================== */
.coin-price-chart-wrap {
	max-width: 100%;
	margin: 32px 0;
	padding: 24px;
	background: var(--cp-card);
	border: 1px solid var(--cp-border);
	border-radius: var(--cp-radius);
	box-shadow: var(--cp-shadow-sm);
}

.coin-price-chart__header {
	display: flex;
	flex-wrap: wrap;
	gap: 12px 16px;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 16px;
}

.coin-price-chart__title {
	margin: 0;
	font-size: 1.15rem;
	font-weight: 700;
	color: var(--cp-text);
}

.coin-price-chart__controls {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	align-items: center;
}

.coin-price-chart__coin-select {
	min-width: 180px;
	padding: 8px 12px;
	border: 1px solid var(--cp-border);
	border-radius: 10px;
	background: var(--cp-card);
	color: var(--cp-text);
	font: inherit;
}

.coin-price-chart__periods {
	display: inline-flex;
	flex-wrap: wrap;
	gap: 6px;
}

.coin-price-chart__period {
	padding: 8px 16px;
	border: 1px solid var(--cp-border);
	border-radius: 999px;
	background: #F1F5F9;
	color: var(--cp-muted);
	cursor: pointer;
	font: inherit;
	line-height: 1.2;
	transition: background var(--cp-transition), color var(--cp-transition), border-color var(--cp-transition);
}

.coin-price-chart__period:hover {
	background: #E2E8F0;
}

.coin-price-chart__period.is-active {
	background: linear-gradient(135deg, #E8C547, #D4AF37);
	border-color: #D4AF37;
	color: #fff;
}

.coin-price-chart__period:focus-visible,
.coin-price-chart__coin-select:focus-visible {
	outline: 2px solid var(--cp-blue);
	outline-offset: 2px;
}

.coin-price-chart__canvas-wrap {
	position: relative;
	width: 100%;
}

/* Chart.js canvas sizing override */
.coin-price-chart__canvas-wrap canvas {
	width: 100% !important;
	height: 100% !important;
}

.coin-price-chart__empty {
	margin: 12px 0 0;
	color: var(--cp-muted);
	font-size: 0.9rem;
}

/* ========================================
   Charts Group (Multi-chart Grid)
   ======================================== */
.coin-price-charts-group {
	max-width: 100%;
	margin: 32px 0;
}

.coin-price-charts-group__header {
	display: flex;
	flex-wrap: wrap;
	gap: 12px 16px;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 16px;
}

.coin-price-charts-group__title {
	margin: 0;
	font-size: 1.25rem;
	font-weight: 700;
	color: var(--cp-text);
}

.coin-price-charts-grid {
	display: grid;
	grid-template-columns: repeat(var(--cp-charts-columns, 2), minmax(0, 1fr));
	gap: 20px;
}

.coin-price-chart-wrap--compact {
	margin: 0;
	padding: 20px;
}

/* ========================================
   Mobile: Independent Cards
   ======================================== */
@media (max-width: 640px) {
	.coin-price-list {
		gap: 16px;
	}

	.coin-price-list__header {
		display: none;
	}

	/* Each coin is already a floating card */
	.coin-price-item {
		padding: 20px;
	}

	.coin-price-row {
		display: grid;
		grid-template-columns: 1fr 1fr auto;
		gap: 14px;
		align-items: center;
	}

	.coin-price-row [role="cell"] {
		display: block;
		padding: 0;
		border: none;
		text-align: start;
	}

	.coin-price-row [role="cell"][data-label]::before {
		content: attr(data-label);
		display: block;
		font-size: 0.75rem;
		font-weight: 600;
		color: var(--cp-muted);
		text-transform: uppercase;
		letter-spacing: 0.04em;
		margin-bottom: 5px;
	}

	.coin-price-table__image {
		grid-column: 1;
		grid-row: 1;
	}

	.coin-price-table__name {
		grid-column: 2;
		grid-row: 1;
		font-size: 1.15rem;
	}

	/* When there is no coin image, name spans the first two columns */
	.coin-price-row > .coin-price-table__name:first-child {
		grid-column: 1 / 3;
		grid-row: 1;
	}

	.coin-price-table__image img {
		width: 56px;
		height: 56px;
	}

	/* Price alignment adjustment on mobile cards */
	.coin-price-table__buy,
	.coin-price-table__sell {
		text-align: start;
	}

	.coin-price-table__chart-action {
		grid-column: 3;
		grid-row: 1;
		display: flex;
		justify-content: flex-start;
		padding-top: 0;
	}

	/* Chart row inside the same card */
	.coin-price-table__chart-row [role="cell"] {
		display: block;
		padding: 0;
	}

	.coin-price-table__chart-inner {
		max-height: 0;
	}

	.coin-price-table__chart-row:not([hidden]) [role="cell"] {
		padding-top: 16px;
		border-top: 1px solid var(--cp-border);
	}

	.coin-price-table__chart-row:not([hidden]) .coin-price-table__chart-inner {
		max-height: 900px;
	}

	.coin-price-charts-grid {
		grid-template-columns: 1fr;
	}
}

/* ========================================
   Accessibility: Reduced Motion
   ======================================== */
/* Extra-narrow phones: stack buy & sell */
@media (max-width: 380px) {
	.coin-price-row {
		grid-template-columns: 1fr;
		gap: 12px;
	}
}

@media (prefers-reduced-motion: reduce) {
	.coin-price-item,
	.coin-price-table__chart-inner,
	.coin-price-table__chart-toggle,
	.coin-price-table__image img {
		transition: none !important;
	}
}