/**
 * IIAC Cookie Consent — 前台样式。
 *
 * 设计原则：
 *   · 不遮挡主要内容（底部横幅不覆盖页脚操作区，中等屏自动收起为单列）；
 *   · 对比度符合 WCAG 2.1 AA（正文 #1f2733 on #fff = 14.8:1，按钮文字 ≥ 4.5:1）；
 *   · 支持 prefers-reduced-motion（关闭动画，符合前庭障碍用户需求）；
 *   · 暗色模式跟随 prefers-color-scheme；
 *   · 移动端底部安全区适配（iPhone home indicator）。
 */

.iicc-root {
	--iicc-ink: #1f2733;
	--iicc-ink-soft: #56616f;
	--iicc-line: #dfe5ec;
	--iicc-bg: #ffffff;
	--iicc-bg-soft: #f4f7fa;
	--iicc-pri: #1a5fb4;
	--iicc-pri-dark: #14487f;
	--iicc-ok: #1a7f37;
	--iicc-radius: 10px;
	--iicc-shadow: 0 8px 28px rgba(16, 24, 40, 0.16);
	--iicc-z: 999999;

	position: relative;
	z-index: var(--iicc-z);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
		"Hiragino Sans GB", "Microsoft YaHei", sans-serif;
	font-size: 15px;
	line-height: 1.7;
	color: var(--iicc-ink);
}

.iicc-root[hidden] {
	display: none !important;
}

/* ================= 横幅 ================= */

.iicc-banner {
	position: fixed;
	left: 0;
	right: 0;
	bottom: 0;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	flex-wrap: wrap;
	padding: 18px 24px;
	background: var(--iicc-bg);
	border-top: 1px solid var(--iicc-line);
	box-shadow: 0 -4px 20px rgba(16, 24, 40, 0.10);
	transform: translateY(110%);
	transition: transform 0.28s ease;
	padding-bottom: calc(18px + env(safe-area-inset-bottom, 0px));
}

.iicc-banner.is-in {
	transform: translateY(0);
}

.iicc-pos-top .iicc-banner {
	top: 0;
	bottom: auto;
	border-top: 0;
	border-bottom: 1px solid var(--iicc-line);
	box-shadow: 0 4px 20px rgba(16, 24, 40, 0.10);
	transform: translateY(-110%);
	padding-top: calc(18px + env(safe-area-inset-top, 0px));
}

.iicc-pos-top .iicc-banner.is-in {
	transform: translateY(0);
}

.iicc-banner__body {
	flex: 1 1 420px;
	min-width: 0;
}

.iicc-banner__title {
	margin: 0 0 6px;
	font-size: 1.0625rem;
	font-weight: 700;
	line-height: 1.5;
	color: var(--iicc-ink);
}

.iicc-banner__msg {
	margin: 0;
	font-size: 0.875rem;
	line-height: 1.75;
	color: var(--iicc-ink-soft);
}

.iicc-banner__policy {
	display: inline-block;
	margin-left: 4px;
	color: var(--iicc-pri);
	text-decoration: underline;
	white-space: nowrap;
}

.iicc-banner__actions {
	display: flex;
	align-items: center;
	gap: 10px;
	flex-wrap: wrap;
}

/* ================= 按钮 ================= */

.iicc-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 40px;
	padding: 9px 18px;
	border: 1px solid transparent;
	border-radius: 8px;
	font-size: 0.875rem;
	font-weight: 600;
	line-height: 1.4;
	cursor: pointer;
	transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
	white-space: nowrap;
}

.iicc-btn:focus-visible {
	outline: 2px solid var(--iicc-pri);
	outline-offset: 2px;
}

.iicc-btn--solid {
	background: var(--iicc-pri);
	border-color: var(--iicc-pri);
	color: #fff;
}

.iicc-btn--solid:hover {
	background: var(--iicc-pri-dark);
	border-color: var(--iicc-pri-dark);
}

.iicc-btn--outline {
	background: #fff;
	border-color: var(--iicc-pri);
	color: var(--iicc-pri);
}

.iicc-btn--outline:hover {
	background: var(--iicc-bg-soft);
}

.iicc-btn--ghost {
	background: transparent;
	border-color: transparent;
	color: var(--iicc-ink-soft);
	text-decoration: underline;
}

.iicc-btn--ghost:hover {
	color: var(--iicc-pri);
}

/* ================= 偏好中心 ================= */

.iicc-modal {
	position: fixed;
	inset: 0;
	z-index: calc(var(--iicc-z) + 1);
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 20px;
}

.iicc-modal[hidden] {
	display: none !important;
}

.iicc-modal__backdrop {
	position: absolute;
	inset: 0;
	background: rgba(20, 26, 36, 0.55);
	opacity: 0;
	transition: opacity 0.22s ease;
}

.iicc-modal.is-in .iicc-modal__backdrop {
	opacity: 1;
}

.iicc-modal__panel {
	position: relative;
	width: 100%;
	max-width: 640px;
	max-height: calc(100vh - 40px);
	overflow-y: auto;
	padding: 24px 26px;
	background: var(--iicc-bg);
	border-radius: 14px;
	box-shadow: var(--iicc-shadow);
	transform: translateY(14px) scale(0.98);
	transition: transform 0.22s ease;
}

.iicc-modal.is-in .iicc-modal__panel {
	transform: translateY(0) scale(1);
}

.iicc-modal__head {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 16px;
	margin-bottom: 8px;
}

.iicc-modal__title {
	margin: 0;
	font-size: 1.125rem;
	font-weight: 700;
	color: var(--iicc-ink);
}

.iicc-modal__close {
	flex: 0 0 auto;
	width: 32px;
	height: 32px;
	margin: -4px -6px 0 0;
	padding: 0;
	border: 0;
	background: transparent;
	color: var(--iicc-ink-soft);
	font-size: 1.5rem;
	line-height: 1;
	cursor: pointer;
	border-radius: 6px;
}

.iicc-modal__close:hover {
	background: var(--iicc-bg-soft);
	color: var(--iicc-ink);
}

.iicc-modal__intro {
	margin: 0 0 18px;
	font-size: 0.875rem;
	color: var(--iicc-ink-soft);
}

.iicc-cats {
	display: grid;
	gap: 10px;
}

.iicc-cat {
	padding: 14px 16px;
	border: 1px solid var(--iicc-line);
	border-radius: var(--iicc-radius);
	background: var(--iicc-bg);
}

.iicc-cat__head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 14px;
}

.iicc-cat__label {
	display: flex;
	align-items: center;
	gap: 10px;
	flex-wrap: wrap;
	cursor: pointer;
	margin: 0;
}

.iicc-cat__name {
	font-size: 0.9375rem;
	font-weight: 600;
	color: var(--iicc-ink);
}

.iicc-cat__count,
.iicc-cat__always {
	padding: 1px 8px;
	border-radius: 999px;
	font-size: 0.6875rem;
	font-weight: 600;
	background: var(--iicc-bg-soft);
	color: var(--iicc-ink-soft);
}

.iicc-cat__always {
	background: #e8f6ec;
	color: var(--iicc-ok);
}

.iicc-cat__desc {
	margin: 8px 0 0;
	font-size: 0.8125rem;
	line-height: 1.7;
	color: var(--iicc-ink-soft);
}

.iicc-cat__detail {
	margin-top: 10px;
	font-size: 0.8125rem;
}

.iicc-cat__detail summary {
	cursor: pointer;
	color: var(--iicc-pri);
	font-size: 0.8125rem;
}

.iicc-cat__sub {
	margin: 10px 0 4px;
	font-size: 0.75rem;
	font-weight: 600;
	color: var(--iicc-ink-soft);
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

.iicc-cat__list {
	margin: 0;
	padding-left: 18px;
	color: var(--iicc-ink-soft);
}

.iicc-cat__list code {
	font-size: 0.75rem;
	background: var(--iicc-bg-soft);
	padding: 1px 5px;
	border-radius: 4px;
	word-break: break-all;
}

/* 开关 */
.iicc-cat input[type="checkbox"] {
	position: absolute;
	opacity: 0;
	width: 1px;
	height: 1px;
	pointer-events: none;
}

.iicc-switch {
	position: relative;
	flex: 0 0 auto;
	width: 44px;
	height: 24px;
	border-radius: 999px;
	background: #c9d2dd;
	cursor: pointer;
	transition: background 0.18s ease;
}

.iicc-switch::after {
	content: "";
	position: absolute;
	top: 3px;
	left: 3px;
	width: 18px;
	height: 18px;
	border-radius: 50%;
	background: #fff;
	box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
	transition: transform 0.18s ease;
}

.iicc-cat input[type="checkbox"]:checked + .iicc-switch {
	background: var(--iicc-pri);
}

.iicc-cat input[type="checkbox"]:checked + .iicc-switch::after {
	transform: translateX(20px);
}

.iicc-cat input[type="checkbox"]:focus-visible + .iicc-switch {
	outline: 2px solid var(--iicc-pri);
	outline-offset: 2px;
}

.iicc-switch--locked {
	background: #a8b4c2;
	cursor: not-allowed;
	opacity: 0.65;
}

.iicc-modal__foot {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	flex-wrap: wrap;
	margin-top: 20px;
	padding-top: 16px;
	border-top: 1px solid var(--iicc-line);
}

.iicc-modal__policy {
	font-size: 0.8125rem;
	color: var(--iicc-pri);
	text-decoration: underline;
}

/* ================= 提示条 ================= */

.iicc-toast {
	position: fixed;
	left: 50%;
	bottom: 28px;
	transform: translate(-50%, 12px);
	z-index: calc(var(--iicc-z) + 2);
	padding: 10px 18px;
	border-radius: 999px;
	background: var(--iicc-ink);
	color: #fff;
	font-size: 0.875rem;
	box-shadow: var(--iicc-shadow);
	opacity: 0;
	transition: opacity 0.24s ease, transform 0.24s ease;
	pointer-events: none;
}

.iicc-toast.is-in {
	opacity: 1;
	transform: translate(-50%, 0);
}

/* ================= 布局变体 ================= */

.iicc-layout-box .iicc-banner {
	left: 24px;
	right: auto;
	bottom: 24px;
	max-width: 420px;
	border: 1px solid var(--iicc-line);
	border-radius: 14px;
	flex-direction: column;
	align-items: stretch;
	gap: 16px;
}

.iicc-layout-box .iicc-banner__actions {
	justify-content: flex-end;
}

.iicc-layout-popup .iicc-banner {
	left: 50%;
	right: auto;
	bottom: auto;
	top: 50%;
	transform: translate(-50%, -46%) scale(0.97);
	opacity: 0;
	flex-direction: column;
	align-items: stretch;
	gap: 18px;
	max-width: 480px;
	border: 1px solid var(--iicc-line);
	border-radius: 14px;
	padding: 26px;
	transition: transform 0.24s ease, opacity 0.24s ease;
}

.iicc-layout-popup .iicc-banner.is-in {
	transform: translate(-50%, -50%) scale(1);
	opacity: 1;
}

.iicc-layout-popup .iicc-banner__actions {
	justify-content: stretch;
}

.iicc-layout-popup .iicc-btn {
	flex: 1 1 auto;
}

/* ================= 响应式 ================= */

@media (max-width: 782px) {

	.iicc-banner {
		flex-direction: column;
		align-items: stretch;
		gap: 14px;
		padding: 16px 18px;
	}

	.iicc-banner__actions {
		justify-content: stretch;
	}

	.iicc-banner__actions .iicc-btn {
		flex: 1 1 auto;
	}

	.iicc-layout-box .iicc-banner {
		left: 12px;
		right: 12px;
		bottom: 12px;
		max-width: none;
	}

	.iicc-modal {
		padding: 0;
		align-items: flex-end;
	}

	.iicc-modal__panel {
		max-width: none;
		max-height: 88vh;
		border-radius: 14px 14px 0 0;
		padding: 20px 18px calc(20px + env(safe-area-inset-bottom, 0px));
	}

	.iicc-modal__foot {
		flex-direction: column-reverse;
		align-items: stretch;
	}

	.iicc-modal__foot .iicc-btn {
		width: 100%;
	}
}

/* ================= 暗色模式 ================= */

@media (prefers-color-scheme: dark) {

	.iicc-root {
		--iicc-ink: #e8edf3;
		--iicc-ink-soft: #a3aebd;
		--iicc-line: #2c3542;
		--iicc-bg: #1b222c;
		--iicc-bg-soft: #232c38;
		--iicc-pri: #62a8f0;
		--iicc-pri-dark: #8cc0f7;
		--iicc-ok: #4cc47a;
		--iicc-shadow: 0 8px 28px rgba(0, 0, 0, 0.5);
	}

	.iicc-btn--solid {
		color: #10233a;
	}

	.iicc-btn--outline {
		background: transparent;
	}

	.iicc-switch {
		background: #3b4655;
	}

	.iicc-cat__always {
		background: #1e3a29;
		color: #6fd494;
	}
}

/* ================= 降低动效 ================= */

@media (prefers-reduced-motion: reduce) {

	.iicc-banner,
	.iicc-modal__backdrop,
	.iicc-modal__panel,
	.iicc-toast,
	.iicc-switch,
	.iicc-switch::after {
		transition: none !important;
	}

	.iicc-banner {
		transform: none;
	}

	.iicc-layout-popup .iicc-banner {
		transform: translate(-50%, -50%);
		opacity: 1;
	}
}