/* ===========================================================
   操作步骤文档系统 - 全局样式
   配色还原参考截图：深色背景 + 紫色强调色 + 卡片式步骤
   =========================================================== */

:root {
    --bg-page: #0e0f1a;
    --bg-card: #181a27;
    --bg-card-inner: #1f2233;
    --bg-input: #11121d;
    --border-color: #2a2d40;
    --text-main: #e7e8f3;
    --text-sub: #8d90a8;
    --accent: #6c5ce7;
    --accent-light: #9b8cf0;
    --accent-soft: rgba(108, 92, 231, 0.15);
    --danger: #f87171;
    --success: #4ade80;
    --radius: 12px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bg-page);
    color: var(--text-main);
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
}

a { color: var(--accent-light); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 24px 60px;
}

/* ---------- 页面标题（左侧紫色竖条） ---------- */
.page-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 600;
    padding-bottom: 18px;
    margin-bottom: 28px;
    border-bottom: 1px solid var(--border-color);
}
.page-title .bar {
    width: 4px;
    height: 22px;
    background: var(--accent);
    border-radius: 2px;
    display: inline-block;
}

/* ---------- 顶部工具条：搜索框 / 操作按钮 ---------- */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.search-box {
    flex: 1;
    min-width: 240px;
    display: flex;
}
.search-box input[type="text"] {
    flex: 1;
    padding: 11px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 8px 0 0 8px;
    color: var(--text-main);
    font-size: 14px;
    outline: none;
}
.search-box input[type="text"]:focus { border-color: var(--accent); }
.search-box button {
    padding: 0 20px;
    background: var(--accent);
    border: none;
    border-radius: 0 8px 8px 0;
    color: #fff;
    cursor: pointer;
    font-size: 14px;
}
.search-box button:hover { background: #5b4bd6; }

/* ---------- 通用按钮 ---------- */
.btn {
    display: inline-block;
    padding: 9px 18px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { background: #5b4bd6; text-decoration: none; }
.btn-secondary { background: var(--bg-card-inner); border: 1px solid var(--border-color); color: var(--text-main); }
.btn-secondary:hover { background: #262943; }
.btn-danger { background: rgba(248,113,113,0.15); color: var(--danger); border: 1px solid rgba(248,113,113,0.3); }
.btn-danger:hover { background: rgba(248,113,113,0.25); }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* ---------- 文档/分类列表卡片 ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 18px;
}
.doc-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    transition: border-color .2s;
}
.doc-card:hover { border-color: var(--accent); }
.doc-card h3 { margin: 0 0 8px; font-size: 16px; }
.doc-card h3 a { color: var(--text-main); }
.doc-card p { margin: 0 0 10px; font-size: 13px; color: var(--text-sub); line-height: 1.5; }
.category-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--accent-light);
    background: var(--accent-soft);
    padding: 2px 10px;
    border-radius: 999px;
    margin-bottom: 10px;
}

.doc-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-sub);
}
.doc-meta .meta-dot { opacity: .5; }

.category-section { margin-bottom: 36px; }
.category-heading {
    font-size: 15px;
    color: var(--text-sub);
    margin-bottom: 14px;
    letter-spacing: .5px;
}

/* ---------- 步骤卡片（核心：还原截图样式） ---------- */
.doc-header { margin-bottom: 28px; }
.doc-header .doc-desc { color: var(--text-sub); font-size: 14px; margin-top: 8px; }

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 22px;
    scroll-margin-top: 20px;
}

.step-head {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-bottom: 16px;
    margin-bottom: 18px;
    border-bottom: 1px solid var(--border-color);
}
.step-head .step-title { flex: 1; }

.btn-copy {
    flex-shrink: 0;
    padding: 6px 12px;
    background: var(--bg-card-inner);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-sub);
    font-size: 12px;
    cursor: pointer;
    white-space: nowrap;
}
.btn-copy:hover { background: #262943; color: var(--text-main); border-color: var(--accent); }
.btn-copy.copied { color: var(--success); border-color: rgba(74,222,128,0.4); }

.step-badge {
    flex-shrink: 0;
    min-width: 36px;
    height: 28px;
    padding: 0 10px;
    background: var(--accent-soft);
    color: var(--accent-light);
    border: 1px solid rgba(108,92,231,0.4);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .5px;
}

.step-title { font-size: 15px; font-weight: 500; }

.step-content {
    color: var(--text-sub);
    font-size: 14px;
    margin-bottom: 16px;
    white-space: pre-wrap;
}

.step-images {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}
.step-images img {
    max-width: 100%;
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: block;
}
/* 单图沾满，多图按比例排布 */
.step-images.count-1 img { max-width: 640px; }
.step-images.count-multi figure { flex: 1 1 280px; max-width: 360px; margin: 0; }
.step-images figure { margin: 0; }

/* ---------- 导出按钮区 ---------- */
.export-bar { display: flex; gap: 10px; margin-bottom: 24px; }

/* ---------- 表单 ---------- */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 13px; color: var(--text-sub); }
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-main);
    font-size: 14px;
    font-family: inherit;
    outline: none;
}
.form-group textarea { min-height: 90px; resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent); }
.form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    max-width: 560px;
}

/* ---------- 表格（后台列表） ---------- */
table.list-table { width: 100%; border-collapse: collapse; background: var(--bg-card); border-radius: var(--radius); overflow: hidden; }
table.list-table th, table.list-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}
table.list-table th { color: var(--text-sub); font-weight: 500; background: var(--bg-card-inner); }
table.list-table tr:last-child td { border-bottom: none; }
.row-actions { display: flex; gap: 8px; }

/* ---------- 后台导航 ---------- */
.admin-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 28px;
}
.admin-nav .brand { font-weight: 600; }
.admin-nav .links a { color: var(--text-sub); margin-left: 18px; font-size: 14px; }
.admin-nav .links a:hover { color: var(--text-main); }

/* ---------- 提示信息 ---------- */
.alert { padding: 10px 16px; border-radius: 8px; font-size: 14px; margin-bottom: 18px; }
.alert-success { background: rgba(74,222,128,0.12); color: var(--success); border: 1px solid rgba(74,222,128,0.3); }
.alert-error { background: rgba(248,113,113,0.12); color: var(--danger); border: 1px solid rgba(248,113,113,0.3); }

.empty-tip { color: var(--text-sub); text-align: center; padding: 60px 0; }

mark { background: rgba(108,92,231,0.35); color: #fff; padding: 0 2px; border-radius: 3px; }

.search-result-item { margin-bottom: 18px; }
.search-result-item .doc-link { font-size: 16px; font-weight: 600; }
.search-result-item .matched-step { font-size: 13px; color: var(--text-sub); margin-top: 6px; }

/* ---------- 步骤管理：左右两栏布局（左：已有步骤列表，右：常驻新增表单） ---------- */
.steps-layout {
    display: flex;
    gap: 24px;
    align-items: stretch;
}
.steps-list-col {
    flex: 1;
    min-width: 0;
}
.steps-form-col {
    width: clamp(260px, 32%, 340px);
    flex-shrink: 0;
}
.steps-form-col .form-card {
    position: sticky;
    top: 20px;
    max-width: none;
    padding: 20px;
}
.steps-form-col h3 {
    margin-top: 0;
    font-size: 15px;
}
.steps-form-col .hint {
    font-size: 12px;
    color: var(--text-sub);
    margin: -8px 0 16px;
}
@media (max-width: 640px) {
    .steps-layout { flex-direction: column; }
    .steps-form-col { width: 100%; }
    .steps-form-col .form-card { position: static; }
}

/* ---------- 文档详情页：左右两栏布局（左：正文，右：常驻步骤导航） ---------- */
.view-layout {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}
.view-main {
    flex: 1;
    min-width: 0;
}
.view-toc {
    width: 240px;
    flex-shrink: 0;
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px;
}
.view-toc-title {
    font-size: 13px;
    color: var(--text-sub);
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}
.view-toc nav { display: flex; flex-direction: column; gap: 4px; }
.toc-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 8px;
    border-radius: 6px;
    color: var(--text-sub);
    font-size: 13px;
    line-height: 1.3;
}
.toc-item:hover { background: var(--bg-card-inner); color: var(--text-main); text-decoration: none; }
.toc-item .toc-badge {
    flex-shrink: 0;
    font-size: 11px;
    font-weight: 600;
    color: var(--accent-light);
    min-width: 20px;
}
.toc-item .toc-text {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
@media (max-width: 880px) {
    .view-layout { flex-direction: column; }
    .view-toc { width: 100%; position: static; max-height: none; order: -1; }
}

/* ---------- 打印 / 导出为PDF 专用样式 ---------- */
@media print {
    body { background: #fff !important; color: #111 !important; }
    .no-print { display: none !important; }
    .step-card, .doc-card, .form-card { background: #fff !important; border: 1px solid #ddd !important; box-shadow: none !important; }
    .step-title, .page-title { color: #111 !important; }
    .step-content { color: #444 !important; }
    a { color: #111 !important; text-decoration: none !important; }
    .step-badge { background: #eee !important; color: #333 !important; border-color: #ccc !important; }
}