/**
 * B2 国际贸易货币转换器 - 前端样式
 */

:root {
	--b2cc-primary: #3b82f6;
	--b2cc-radius: 14px;
	--b2cc-bg: #ffffff;
	--b2cc-bg-soft: #f6f8fc;
	--b2cc-border: #e8edf5;
	--b2cc-text: #1f2937;
	--b2cc-muted: #8a94a6;
	--b2cc-shadow: 0 6px 24px rgba(31, 41, 55, .08);
}

.b2cc-wrap {
	position: relative;
	box-sizing: border-box;
	width: 100%;
	font-size: 14px;
	line-height: 1.6;
	color: var(--b2cc-text);
	font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
	-webkit-font-smoothing: antialiased;
}

.b2cc-wrap * {
	box-sizing: border-box;
}

/* ---------- 标题 ---------- */
.b2cc-title {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 10px;
	margin-bottom: 12px;
	flex-wrap: wrap;
}

.b2cc-title-main {
	font-size: 16px;
	font-weight: 700;
	letter-spacing: .3px;
	background: linear-gradient(90deg, var(--b2cc-primary), color-mix(in srgb, var(--b2cc-primary) 45%, #22d3ee));
	-webkit-background-clip: text;
	background-clip: text;
	-webkit-text-fill-color: transparent;
}

.b2cc-updated {
	font-size: 12px;
	color: var(--b2cc-muted);
}

/* ---------- 主体卡片 ---------- */
.b2cc-box {
	background: var(--b2cc-bg);
	border: 1px solid var(--b2cc-border);
	border-radius: var(--b2cc-radius);
	padding: 16px;
	box-shadow: var(--b2cc-shadow);
	transition: box-shadow .25s ease, border-color .25s ease;
}

.b2cc-box:hover {
	box-shadow: 0 10px 30px rgba(31, 41, 55, .12);
}

.b2cc-row {
	display: flex;
	gap: 10px;
	align-items: flex-end;
	margin-bottom: 12px;
}

.b2cc-field {
	flex: 1;
	min-width: 0;
}

.b2cc-label {
	display: block;
	font-size: 12px;
	color: var(--b2cc-muted);
	margin-bottom: 5px;
}

.b2cc-wrap input.b2cc-amount,
.b2cc-wrap select {
	width: 100%;
	height: 42px;
	padding: 0 12px;
	border: 1px solid var(--b2cc-border);
	border-radius: calc(var(--b2cc-radius) - 6px);
	background: var(--b2cc-bg-soft);
	color: var(--b2cc-text);
	font-size: 15px;
	outline: none;
	transition: border-color .2s, box-shadow .2s, background .2s;
	appearance: none;
	-webkit-appearance: none;
}

.b2cc-wrap select {
	background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='%238a94a6'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 10px center;
	padding-right: 30px;
	cursor: pointer;
}

.b2cc-wrap input.b2cc-amount {
	font-weight: 600;
	font-size: 17px;
	letter-spacing: .5px;
}

.b2cc-wrap input.b2cc-amount:focus,
.b2cc-wrap select:focus {
	border-color: var(--b2cc-primary);
	box-shadow: 0 0 0 3px color-mix(in srgb, var(--b2cc-primary) 18%, transparent);
	background: var(--b2cc-bg);
}

.b2cc-row-pair {
	align-items: center;
	gap: 8px;
}

.b2cc-swap {
	flex: 0 0 auto;
	width: 42px;
	height: 42px;
	margin-bottom: 0;
	border: 1px solid var(--b2cc-border);
	border-radius: 50%;
	background: linear-gradient(135deg, var(--b2cc-primary), color-mix(in srgb, var(--b2cc-primary) 60%, #0ea5e9));
	color: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	transition: transform .35s cubic-bezier(.34, 1.56, .64, 1), box-shadow .25s;
	box-shadow: 0 4px 12px color-mix(in srgb, var(--b2cc-primary) 35%, transparent);
	margin-top: 17px;
}

.b2cc-swap:hover {
	transform: rotate(180deg);
}

.b2cc-swap:active {
	transform: rotate(180deg) scale(.92);
}

/* ---------- 结果 ---------- */
.b2cc-result {
	position: relative;
	margin-top: 14px;
	padding: 14px 16px;
	border-radius: calc(var(--b2cc-radius) - 4px);
	background: linear-gradient(135deg, color-mix(in srgb, var(--b2cc-primary) 12%, transparent), color-mix(in srgb, var(--b2cc-primary) 4%, transparent));
	border: 1px solid color-mix(in srgb, var(--b2cc-primary) 25%, transparent);
	overflow: hidden;
}

.b2cc-result::after {
	content: "";
	position: absolute;
	right: -30px;
	top: -30px;
	width: 110px;
	height: 110px;
	border-radius: 50%;
	background: radial-gradient(circle, color-mix(in srgb, var(--b2cc-primary) 22%, transparent), transparent 70%);
	pointer-events: none;
}

.b2cc-result-line {
	display: flex;
	align-items: center;
	gap: 10px;
	flex-wrap: wrap;
	font-size: 15px;
}

.b2cc-result-eq {
	color: var(--b2cc-muted);
	font-weight: 600;
}

.b2cc-result-src {
	color: var(--b2cc-muted);
}

.b2cc-src-amount {
	color: var(--b2cc-text);
	font-size: 16px;
}

.b2cc-result-out {
	margin-left: auto;
}

.b2cc-out-value {
	font-size: 26px;
	font-weight: 800;
	color: var(--b2cc-primary);
	letter-spacing: .5px;
	line-height: 1.2;
	transition: opacity .2s;
}

.b2cc-out-code,
.b2cc-src-code {
	font-style: normal;
	font-size: 13px;
	font-weight: 600;
	color: var(--b2cc-muted);
	margin-left: 3px;
}

.b2cc-result-rate {
	margin-top: 4px;
	font-size: 12px;
	color: var(--b2cc-muted);
}

.b2cc-result-rate b {
	color: var(--b2cc-text);
}

/* ---------- 快捷货币 ---------- */
.b2cc-quick {
	list-style: none;
	margin: 14px 0 0;
	padding: 0;
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
	gap: 8px;
}

.b2cc-quick-item {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 2px;
	padding: 8px 10px;
	border: 1px solid var(--b2cc-border);
	border-radius: calc(var(--b2cc-radius) - 6px);
	background: var(--b2cc-bg-soft);
	cursor: pointer;
	transition: all .2s ease;
}

.b2cc-quick-item:hover {
	transform: translateY(-2px);
	border-color: var(--b2cc-primary);
	box-shadow: 0 4px 14px color-mix(in srgb, var(--b2cc-primary) 20%, transparent);
}

.b2cc-quick-item.active {
	border-color: var(--b2cc-primary);
	background: color-mix(in srgb, var(--b2cc-primary) 10%, var(--b2cc-bg));
}

.b2cc-quick-code {
	font-size: 11px;
	font-weight: 700;
	color: var(--b2cc-muted);
	letter-spacing: .5px;
}

.b2cc-quick-val {
	font-size: 14px;
	font-weight: 700;
	color: var(--b2cc-text);
	word-break: break-all;
}

.b2cc-flag {
	font-size: 15px;
	line-height: 1;
	margin-right: 2px;
}

/* ---------- 列表模式 ---------- */
.b2cc-list {
	list-style: none;
	margin: 0;
	padding: 0;
	border: 1px solid var(--b2cc-border);
	border-radius: var(--b2cc-radius);
	background: var(--b2cc-bg);
	box-shadow: var(--b2cc-shadow);
	overflow: hidden;
}

.b2cc-item {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	padding: 11px 14px;
	border-bottom: 1px solid var(--b2cc-border);
	transition: background .2s;
}

.b2cc-item:last-child {
	border-bottom: 0;
}

.b2cc-item:hover {
	background: var(--b2cc-bg-soft);
}

.b2cc-item.is-base {
	background: color-mix(in srgb, var(--b2cc-primary) 8%, transparent);
}

.b2cc-item-left {
	display: flex;
	align-items: center;
	gap: 6px;
	min-width: 0;
}

.b2cc-code {
	font-weight: 800;
	font-size: 13px;
	letter-spacing: .5px;
	color: var(--b2cc-text);
}

.b2cc-name {
	font-size: 12px;
	color: var(--b2cc-muted);
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.b2cc-item-right {
	display: flex;
	flex-direction: column;
	align-items: flex-end;
	gap: 1px;
}

.b2cc-rate {
	font-size: 11px;
	color: var(--b2cc-muted);
}

.b2cc-rate b {
	color: var(--b2cc-text);
}

.b2cc-amount {
	font-size: 15px;
	font-weight: 700;
	color: var(--b2cc-primary);
}

.b2cc-item-symbol {
	position: absolute;
	left: 14px;
	top: 50%;
	transform: translateY(-50%);
	font-size: 26px;
	font-weight: 700;
	color: var(--b2cc-primary);
	opacity: .07;
	pointer-events: none;
}

/* ---------- 迷你模式 ---------- */
.b2cc-mode-mini .b2cc-mini {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 4px 10px;
	border-radius: 999px;
	background: var(--b2cc-bg-soft);
	border: 1px solid var(--b2cc-border);
	transition: all .2s;
	white-space: nowrap;
	max-width: 100%;
}

.b2cc-mode-mini .b2cc-mini:hover {
	border-color: var(--b2cc-primary);
	box-shadow: 0 3px 12px color-mix(in srgb, var(--b2cc-primary) 22%, transparent);
}

.b2cc-mini-icon {
	display: inline-flex;
	color: var(--b2cc-primary);
}

.b2cc-mini-text {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	font-size: 12px;
	color: var(--b2cc-text);
}

.b2cc-mini-eq {
	font-style: normal;
	color: var(--b2cc-muted);
}

.b2cc-mini-val {
	color: var(--b2cc-primary);
	font-weight: 800;
	transition: opacity .2s;
}

.b2cc-mini-to {
	font-weight: 700;
}

.b2cc-mini-select {
	width: auto !important;
	height: 26px !important;
	min-height: 26px;
	padding: 0 22px 0 8px !important;
	font-size: 12px !important;
	border-radius: 999px !important;
	background-color: transparent !important;
	border: 1px solid var(--b2cc-border) !important;
}

/* ---------- 说明 ---------- */
.b2cc-desc {
	margin-top: 10px;
	font-size: 12px;
	color: var(--b2cc-muted);
	line-height: 1.5;
}

/* ---------- 导航栏挂载 ---------- */
.b2cc-nav-slot {
	display: inline-flex;
	align-items: center;
	vertical-align: middle;
	margin-left: 8px;
}

.b2cc-nav-slot .b2cc-wrap {
	width: auto;
}

.b2cc-nav-fallback {
	display: block;
	margin: 6px auto;
	text-align: center;
}

.b2cc-nav-fallback .b2cc-wrap {
	display: inline-block;
	width: auto;
}

/* ---------- 底部浮动条 ---------- */
.b2cc-float-bar {
	position: fixed;
	left: 50%;
	bottom: 16px;
	transform: translateX(-50%);
	z-index: 9998;
	background: var(--b2cc-bg);
	border: 1px solid var(--b2cc-border);
	border-radius: 999px;
	padding: 5px 8px;
	box-shadow: 0 8px 28px rgba(31, 41, 55, .16);
}

.b2cc-float-bar .b2cc-wrap {
	width: auto;
}

/* ---------- 小工具容器 ---------- */
.b2cc-widget-box .b2cc-wrap {
	font-size: 14px;
}

/* ---------- 深色模式（适配 7B2 夜间模式） ---------- */
.b2dark .b2cc-wrap,
.b2cc-dark-adapt.b2cc-in-dark,
.b2cc-wrap.b2cc-force-dark {
	--b2cc-bg: #1e2430;
	--b2cc-bg-soft: #262d3b;
	--b2cc-border: #333c4d;
	--b2cc-text: #e6eaf2;
	--b2cc-muted: #8f9bb0;
	--b2cc-shadow: 0 6px 24px rgba(0, 0, 0, .35);
}

.b2dark .b2cc-box,
.b2dark .b2cc-list {
	background: var(--b2cc-bg);
}

.b2dark .b2cc-swap {
	box-shadow: 0 4px 12px rgba(0, 0, 0, .4);
}

/* ---------- 老浏览器回退（不支持 color-mix 时） ---------- */
@supports not (color: color-mix(in srgb, red 50%, blue)) {
	.b2cc-result {
		background: rgba(59, 130, 246, .09);
		border-color: rgba(59, 130, 246, .28);
	}
	.b2cc-result::after {
		background: radial-gradient(circle, rgba(59, 130, 246, .18), transparent 70%);
	}
	.b2cc-swap {
		background: #3b82f6;
		box-shadow: 0 4px 12px rgba(59, 130, 246, .35);
	}
	.b2cc-quick-item:hover {
		box-shadow: 0 4px 14px rgba(59, 130, 246, .2);
	}
	.b2cc-quick-item.active,
	.b2cc-item.is-base {
		background: rgba(59, 130, 246, .1);
	}
	.b2cc-wrap input.b2cc-amount:focus,
	.b2cc-wrap select:focus {
		box-shadow: 0 0 0 3px rgba(59, 130, 246, .18);
	}
	.b2cc-mode-mini .b2cc-mini:hover {
		box-shadow: 0 3px 12px rgba(59, 130, 246, .22);
	}
	.b2cc-title-main {
		background: none;
		-webkit-text-fill-color: currentColor;
		color: #3b82f6;
	}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width: 768px) {
	.b2cc-out-value {
		font-size: 22px;
	}

	.b2cc-quick {
		grid-template-columns: repeat(auto-fill, minmax(76px, 1fr));
		gap: 6px;
	}

	.b2cc-nav-slot {
		margin-left: 0;
	}

	.b2cc-float-bar {
		left: 12px;
		right: 12px;
		transform: none;
		border-radius: var(--b2cc-radius);
	}
}