/* Author: Seraphina
   统一的前端样式（参考 OpenAI 风格，简洁、留白、卡片化）
   说明：
   - 只通过类名覆盖通用元素样式，尽量不侵入各业务页面
   - 侧边栏 + 顶部栏 + 内容区布局；移动端自动折叠侧边栏
*/

:root {
	/* 品牌主色（参考 OpenAI 绿） */
	--color-primary: #10a37f;
	--color-primary-600: #0d8b6c;
	--color-bg: #f3f4f6;
	--color-surface: #ffffff;
	--color-border: #e5e7eb;
	--color-text: #111827;
	--color-muted: #6b7280;
	--color-danger: #dc2626;
	--sidebar-bg: #0b1020; /* 深色沉稳侧边栏 */
	--sidebar-text: #e5e7eb;
}

/* 基础排版与重置 */
*,
*::before,
*::after {
	box-sizing: border-box;
}
html {
	-webkit-text-size-adjust: 100%;
}
html, body {
	height: 100%;
}
body {
	margin: 0;
	font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
	color: var(--color-text);
	background: var(--color-bg);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	line-height: 1.6;
	letter-spacing: 0.2px;
}
img, svg, video, canvas, audio, iframe, embed, object {
	max-width: 100%;
	height: auto;
	display: block;
}
button, input, select, textarea {
	font: inherit;
	color: inherit;
}
input, textarea {
	min-width: 0; /* 防止在 flex 容器中溢出 */
}

/* 布局 */
.app-shell {
	display: grid;
	grid-template-columns: 260px 1fr;
	min-height: 100vh;
}
.sidebar {
	background: var(--sidebar-bg);
	color: var(--sidebar-text);
	display: flex;
	flex-direction: column;
	border-right: 1px solid rgba(255,255,255,0.04);
}
.sidebar .brand {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 16px 18px;
	font-weight: 600;
	font-size: 16px;
	color: #fff;
	border-bottom: 1px solid rgba(255,255,255,0.06);
}
.sidebar nav {
	padding: 12px 8px;
}
.sidebar a {
	display: flex;
	align-items: center;
	gap: 10px;
	color: var(--sidebar-text);
	text-decoration: none;
	padding: 10px 12px;
	border-radius: 8px;
	margin: 4px 8px;
	transition: background .15s ease, color .15s ease;
}
.sidebar a:hover {
	background: rgba(255,255,255,0.06);
}
.sidebar a.active {
	background: rgba(16, 163, 127, 0.2);
	color: #e7fffb;
}
.sidebar .spacer {
	flex: 1;
}
.sidebar .logout {
	padding: 12px 16px;
	border-top: 1px solid rgba(255,255,255,0.06);
}
.sidebar .logout a {
	color: #fca5a5;
}

.content {
	display: flex;
	flex-direction: column;
	min-width: 0;
}
.topbar {
	height: 56px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	background: var(--color-surface);
	border-bottom: 1px solid var(--color-border);
	padding: 0 16px;
	position: sticky;
	top: 0;
	z-index: 10;
}
.topbar .right a {
	color: var(--color-text);
	text-decoration: none;
	padding: 6px 10px;
	border-radius: 6px;
}
.topbar .right a:hover {
	background: #f3f4f6;
}
.sidebar-toggle {
	display: none;
	border: 1px solid var(--color-border);
	background: var(--color-surface);
	border-radius: 8px;
	padding: 6px 10px;
	cursor: pointer;
}

.container {
	max-width: 1200px;
	margin: 24px auto;
	padding: 0 20px;
}

/* 卡片与分割 */
.card {
	background: var(--color-surface);
	border: 1px solid var(--color-border);
	border-radius: 12px;
	padding: 20px;
	box-shadow: 0 2px 4px rgba(0,0,0,0.04);
	overflow-x: auto; /* 避免表格或预格式文本横向溢出 */
}
.card + .card { margin-top: 16px; }
.row {
	display: flex;
	gap: 20px;
	flex-wrap: wrap;
	align-items: flex-start;
}
.col {
	flex: 1 1 320px; /* 默认列最小宽度，避免过窄拥挤 */
	min-width: 0; /* 允许在容器中收缩，防止内容溢出 */
}

/* 表单 */
label {
	display: block;
	font-size: 13px;
	color: var(--color-muted);
	margin: 0 0 6px 2px;
}
input[type=text],
input[type=password],
select,
textarea {
	width: 100%;
	padding: 10px 12px;
	border: 1px solid var(--color-border);
	border-radius: 10px;
	background: #fff;
	color: var(--color-text);
	outline: none;
	transition: border-color .15s ease, box-shadow .15s ease;
	min-width: 0; /* 在 .row/.col 中防止溢出 */
}
input[type=text]:focus,
input[type=password]:focus,
select:focus,
textarea:focus {
	border-color: var(--color-primary);
	box-shadow: 0 0 0 3px rgba(16,163,127,0.15);
}

/* 按钮 */
button, .btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	background: var(--color-primary);
	color: #fff;
	border: 0;
	padding: 10px 14px;
	border-radius: 10px;
	cursor: pointer;
	text-decoration: none;
	transition: background .15s ease, transform .02s ease;
}
button:hover, .btn:hover {
	background: var(--color-primary-600);
}
button:active, .btn:active {
	transform: translateY(1px);
}
.btn.secondary, button.secondary {
	background: #6b7280;
}
.btn.danger, button.danger {
	background: var(--color-danger);
}

/* 表格 */
table {
	width: 100%;
	border-collapse: collapse;
	table-layout: auto;
}
th, td {
	padding: 10px 8px;
	text-align: left;
	border-bottom: 1px solid var(--color-border);
	vertical-align: top;
	word-break: break-word; /* 防止长串字符把布局撑破 */
}
th {
	color: var(--color-muted);
	font-weight: 600;
	background: #fafafa;
}
tr:hover td {
	background: #fafafa;
}

/* 代码块与提示 */
.muted {
	color: var(--color-muted);
}
pre, code {
	font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
	font-size: 12px;
}
pre.block {
	white-space: pre-wrap;
	background: #f9fafb;
	padding: 12px;
	border: 1px solid var(--color-border);
	border-radius: 10px;
	overflow: auto; /* 预格式文本横向滚动而非撑破 */
}

/* 登录页居中容器 */
.auth-page {
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 100vh;
	background: radial-gradient(1200px 600px at 10% -10%, #d9fff3 0, rgba(217,255,243,0) 60%), radial-gradient(1200px 600px at 90% 110%, #d9fff3 0, rgba(217,255,243,0) 60%), var(--color-bg);
}
.auth-card {
	width: 100%;
	max-width: 420px;
	background: var(--color-surface);
	border: 1px solid var(--color-border);
	border-radius: 16px;
	padding: 20px;
	box-shadow: 0 8px 20px rgba(0,0,0,0.06);
}

/* 响应式：移动端折叠侧边栏 */
@media (max-width: 960px) {
	.app-shell {
		grid-template-columns: 1fr;
	}
	.sidebar {
		position: fixed;
		inset: 0 auto 0 0;
		width: 260px;
		transform: translateX(-100%);
		transition: transform .2s ease;
		z-index: 20;
	}
	body[data-sidebar-open="true"] .sidebar {
		transform: translateX(0);
	}
	.sidebar-toggle {
		display: inline-flex;
	}
	.content {
		min-height: 100vh;
	}
}