/* navpanel — 视觉对齐 www.deepseek.com（浅色模式）
 *
 * 设计 token 取自官网：底色 #f9f8f8、主文字 #1e232c、次要 rgba(0,0,0,.7)、
 * 品牌蓝 #4d6bfe、圆角 8/10/12/16/24/pill、字体 DM Sans 栈。
 * 首屏背景由 assets/dsbg.js 绘制（自研流体云雾），此处提供 CSS 渐变兜底。
 * 全站 class 名与 DOM 结构保持不变：app.js / admin 内联脚本依赖它们。
 */

:root {
    /* —— 官网浅色设计 token —— */
    --ds-bg-page: #f9f8f8;
    --ds-text: #1e232c;
    --ds-text-secondary: rgba(0, 0, 0, .7);
    --ds-text-desc: rgba(0, 0, 0, .65);
    --ds-text-placeholder: #8691a1;
    --ds-border-subtle: rgba(0, 0, 0, .06);
    --ds-border-default: rgba(0, 0, 0, .1);
    --ds-border-strong: rgba(0, 0, 0, .2);
    --ds-border-secondary: rgba(9, 45, 78, .18);
    --ds-brand: #4d6bfe;
    --ds-brand-deep: #3a65c2;
    --ds-brand-soft: rgba(77, 107, 254, .1);
    --ds-surface-1: hsla(0, 0%, 100%, .3);
    --ds-surface-2: hsla(0, 0%, 100%, .4);
    --ds-surface-solid: rgba(255, 255, 255, .62);
    --ds-surface-solid-hover: rgba(255, 255, 255, .88);
    --ds-hover: rgba(0, 0, 0, .04);
    --ds-shadow-card: 0 0 0 1px #f1f5f9, 0 2px 4px rgba(0, 0, 0, .05), 0 12px 24px rgba(0, 0, 0, .05);
    --ds-shadow-pop: 0 2px 4px rgba(0, 0, 0, .05), 0 12px 32px rgba(15, 30, 60, .12);
    --ds-r-sm: 8px;
    --ds-r-input: 10px;
    --ds-r-media: 12px;
    --ds-r-panel: 16px;
    --ds-r-card: 24px;
    --ds-r-pill: 100px;
    --ds-font: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", sans-serif;

    /* —— 内置预设背景：p1 为官网首屏配色 —— */
    --bg-p1: linear-gradient(180deg, #c3d7ee 0%, #e9f0f8 32%, #f9f8f8 68%);
    --bg-p2: linear-gradient(180deg, #bfd4f3 0%, #eef3fb 38%, #f9f8f8 100%);
    --bg-p3: linear-gradient(180deg, #e6dcf3 0%, #f2edfb 40%, #fbfafe 100%);
    --bg-p4: linear-gradient(180deg, #d5e4f4 0%, #edf3fb 40%, #fafbfe 100%);
    --bg-p5: linear-gradient(180deg, #d9ecf0 0%, #eef6f8 40%, #fafcfe 100%);
    --bg-p6: linear-gradient(180deg, #f0e3dc 0%, #f7f0ec 40%, #fdfbfa 100%);

    /* 兼容旧变量名 */
    --card: var(--ds-surface-solid);
    --card-hover: var(--ds-surface-solid-hover);
    --text: var(--ds-text);
    --dim: var(--ds-text-desc);
    --line: var(--ds-border-default);
    --shadow: var(--ds-shadow-card);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    min-height: 100vh;
    color: var(--ds-text);
    font: 16px/1.6 var(--ds-font);
    background-color: var(--ds-bg-page);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.hidden { display: none !important; }

/* —— 首屏背景层（与官网一致：顶部淡蓝渐变 + 流体云雾） —— */
.ds-bg {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
    background: linear-gradient(180deg, #9cc1e7 0%, rgba(249, 248, 248, 0) 100%);
    /* 与官网同款垂直渐隐：蓝只留在首屏上部，向下淡出到底色 */
    -webkit-mask: linear-gradient(#000 0%, rgba(0, 0, 0, .92) 8%, rgba(0, 0, 0, .5) 30%, rgba(0, 0, 0, .12) 55%, transparent 76%);
    mask: linear-gradient(#000 0%, rgba(0, 0, 0, .92) 8%, rgba(0, 0, 0, .5) 30%, rgba(0, 0, 0, .12) 55%, transparent 76%);
}
.ds-bg canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; display: block; filter: blur(12px) saturate(115%); }
@media (max-width: 640px) { .ds-bg canvas { filter: blur(8px) saturate(115%); } }

/* 内容始终位于背景层之上 */
.shell, .wrap, .auth-card { position: relative; z-index: 1; }

/* —— 登录 / 注册页 —— */
.auth-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg-p1); }
.auth-card {
    width: 380px;
    max-width: calc(100vw - 32px);
    background: rgba(255, 255, 255, .72);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--ds-border-subtle);
    border-radius: var(--ds-r-card);
    box-shadow: var(--ds-shadow-card);
    padding: 34px 30px 30px;
}
.auth-card h1 { text-align: center; margin-bottom: 20px; font-size: 28px; font-weight: 500; letter-spacing: .12em; color: var(--ds-text); }
.auth-card form { display: flex; flex-direction: column; gap: 14px; margin-top: 16px; }
.auth-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--ds-text-desc); }
.auth-card input {
    background: #fff;
    border: 1px solid var(--ds-border-default);
    border-radius: var(--ds-r-input);
    padding: 11px 13px;
    font: inherit;
    font-size: 15px;
    color: var(--ds-text);
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
.auth-card input::placeholder { color: var(--ds-text-placeholder); }
.auth-card input:focus { border-color: var(--ds-brand); box-shadow: 0 0 0 3px var(--ds-brand-soft); }
.tabs { display: flex; justify-content: center; gap: 8px; }

.msg { background: rgba(236, 19, 19, .08); border: 1px solid rgba(236, 19, 19, .16); border-radius: var(--ds-r-input); padding: 9px 12px; font-size: 13px; margin-top: 14px; color: #b3261e; }
.msg.ok { background: rgba(34, 197, 94, .1); border-color: rgba(34, 197, 94, .2); color: #177a3c; }

/* —— 按钮（官网：胶囊、白底描边次按钮 / 品牌蓝主按钮） —— */
.btn {
    display: inline-block;
    background: var(--ds-surface-2);
    color: var(--ds-text);
    border: 1px solid var(--ds-border-secondary);
    border-radius: var(--ds-r-pill);
    padding: 9px 18px;
    cursor: pointer;
    text-decoration: none;
    font: inherit;
    font-size: 14px;
    line-height: 1.4;
    text-align: center;
    transition: background .15s, border-color .15s, box-shadow .15s;
}
.btn:hover { background: #fff; box-shadow: var(--ds-shadow-card); }
.btn.primary { background: var(--ds-brand); color: #fff; border-color: transparent; }
.btn.primary:hover { background: var(--ds-brand-deep); box-shadow: none; }
.btn.ghost { background: transparent; border-color: var(--ds-border-default); }
.btn.ghost:hover { background: var(--ds-hover); box-shadow: none; }
.btn.small { padding: 4px 12px; font-size: 12px; }
.btn.danger { background: transparent; color: #ec1313; border-color: rgba(236, 19, 19, .28); }
.btn.danger:hover { background: rgba(236, 19, 19, .06); box-shadow: none; }

/* —— 顶栏 —— */
.shell { max-width: 1080px; margin: 0 auto; padding: 22px 20px 80px; }
.top { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.brand { font-size: 20px; font-weight: 700; letter-spacing: .02em; color: var(--ds-text); }
.searchbar {
    flex: 1;
    display: flex;
    min-width: 260px;
    background: var(--ds-surface-solid);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--ds-border-subtle);
    border-radius: var(--ds-r-pill);
    box-shadow: var(--ds-shadow-card);
    overflow: hidden;
    transition: background .15s;
}
.searchbar:focus-within { background: #fff; }
.searchbar select { background: transparent; color: var(--ds-text-secondary); border: 0; padding: 11px 6px 11px 16px; font: inherit; font-size: 14px; outline: none; cursor: pointer; }
.searchbar input { flex: 1; background: transparent; border: 0; outline: none; color: var(--ds-text); padding: 11px 16px 11px 10px; font: inherit; font-size: 15px; }
.searchbar input::placeholder { color: var(--ds-text-placeholder); }
.who { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.who span { color: var(--ds-text-desc); font-size: 14px; }
.who a { color: var(--ds-text); text-decoration: none; }

/* —— 分组页签 —— */
.tabbar { display: flex; gap: 8px; margin: 24px 0 16px; flex-wrap: wrap; align-items: center; }
.tab {
    background: var(--ds-surface-solid);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--ds-border-subtle);
    color: var(--ds-text-secondary);
    border-radius: var(--ds-r-pill);
    padding: 7px 18px;
    cursor: pointer;
    font: inherit;
    font-size: 14px;
    position: relative;
    transition: background .15s, color .15s, border-color .15s;
}
.tab:hover { background: #fff; color: var(--ds-text); }
.tab.active { background: #fff; color: var(--ds-text); font-weight: 600; border-color: var(--ds-brand); box-shadow: 0 0 0 3px var(--ds-brand-soft); }
.tab .dot { display: none; position: absolute; top: -6px; right: -2px; background: #ec1313; color: #fff; width: 16px; height: 16px; border-radius: 50%; font-size: 12px; line-height: 15px; text-align: center; }
.tab:hover .dot { display: block; }
.tab.add { font-size: 17px; padding: 4px 15px; }
.tab.drag-over { outline: 2px dashed var(--ds-brand); outline-offset: 2px; }

/* —— 卡片区 —— */
.page-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.page-head .hint { font-size: 12px; color: var(--ds-text-desc); flex: 1; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.card {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--ds-surface-solid);
    border-radius: var(--ds-r-card);
    padding: 12px 14px;
    text-decoration: none;
    color: var(--ds-text);
    position: relative;
    box-shadow: var(--ds-shadow-card);
    transition: transform .15s, background .15s, box-shadow .15s;
}
.card:hover { background: var(--ds-surface-solid-hover); transform: translateY(-2px); box-shadow: var(--ds-shadow-pop); }
.card.dragging { opacity: .4; }
.ic { width: 24px; height: 24px; border-radius: 6px; object-fit: cover; flex: none; background: #fff; }
.ic-fallback { display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 17px; color: #fff; background: linear-gradient(135deg, #7aa3e8, var(--ds-brand)); }
.meta { display: flex; flex-direction: column; min-width: 0; }
.meta b { font-size: 14px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.meta i { font-style: normal; font-size: 12px; color: var(--ds-text-desc); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ops { display: none; position: absolute; top: 6px; right: 8px; gap: 4px; }
body.edit-mode .card.ops-show .ops { display: flex; }
body.edit-mode .card.ops-show { outline: 2px solid var(--ds-brand); outline-offset: 2px; }
.op { background: rgba(30, 50, 90, .12); border: 0; color: var(--ds-text); width: 22px; height: 22px; border-radius: var(--ds-r-sm); cursor: pointer; font-size: 12px; line-height: 1; transition: background .15s; }
.op:hover { background: rgba(30, 50, 90, .26); }
.drop-hint { display: none; border: 2px dashed var(--ds-border-strong); border-radius: var(--ds-r-panel); padding: 18px; text-align: center; color: var(--ds-text-desc); grid-column: 1 / -1; }
.grid.dragging .drop-hint { display: block; }
.empty { text-align: center; color: var(--ds-text-desc); margin-top: 80px; font-size: 16px; }

/* —— 模态框（官网卡片圆角 24 + 浮层阴影） —— */
dialog {
    background: #fff;
    color: var(--ds-text);
    border: 1px solid var(--ds-border-subtle);
    border-radius: var(--ds-r-card);
    padding: 26px 24px 22px;
    width: min(92vw, 420px);
    margin: auto;
    box-shadow: var(--ds-shadow-pop);
}
dialog::backdrop { background: rgba(15, 30, 60, .24); backdrop-filter: blur(4px); }
dialog form { display: flex; flex-direction: column; gap: 12px; }
dialog h3 { margin: 0; font-size: 18px; font-weight: 600; }
dialog label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--ds-text-desc); }
dialog input, dialog select {
    background: #fff;
    border: 1px solid var(--ds-border-default);
    border-radius: var(--ds-r-input);
    padding: 9px 12px;
    font: inherit;
    font-size: 14px;
    color: var(--ds-text);
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
dialog input:focus, dialog select:focus { border-color: var(--ds-brand); box-shadow: 0 0 0 3px var(--ds-brand-soft); }
.dlg-foot { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }
.swatches { display: flex; gap: 10px; }
.swatch { width: 42px; height: 28px; border-radius: var(--ds-r-sm); border: 2px solid transparent; cursor: pointer; box-shadow: inset 0 0 0 1px var(--ds-border-subtle); }
.sw1 { background: var(--bg-p1); } .sw2 { background: var(--bg-p2); } .sw3 { background: var(--bg-p3); }
.sw4 { background: var(--bg-p4); } .sw5 { background: var(--bg-p5); } .sw6 { background: var(--bg-p6); }
.swatch:hover { border-color: var(--ds-brand); }

/* —— 管理页 —— */
.admin-body { background: var(--bg-p1); }
.wrap { max-width: 900px; margin: 0 auto; padding: 24px; }
.tbl {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    background: rgba(255, 255, 255, .78);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--ds-r-panel);
    overflow: hidden;
    box-shadow: var(--ds-shadow-card);
}
.tbl th, .tbl td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--ds-border-subtle); font-size: 14px; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl th { color: var(--ds-text-desc); font-weight: 500; }
.ops-row { display: flex; gap: 6px; flex-wrap: wrap; }
.inline-form { display: flex; gap: 10px; flex-wrap: wrap; }
.inline-form input, .inline-form select {
    background: #fff;
    border: 1px solid var(--ds-border-default);
    border-radius: var(--ds-r-input);
    padding: 9px 12px;
    font: inherit;
    font-size: 14px;
    color: var(--ds-text);
    outline: none;
}
.inline-form input:focus, .inline-form select:focus { border-color: var(--ds-brand); box-shadow: 0 0 0 3px var(--ds-brand-soft); }
.switch-label { display: flex; align-items: center; gap: 6px; color: var(--ds-text-desc); font-size: 14px; }
h3 { margin: 20px 0 10px; font-size: 18px; font-weight: 600; }

@media (max-width: 640px) {
    .top { gap: 10px; }
    .brand { font-size: 19px; }
    .grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
    .shell { padding: 16px 14px 48px; }
}

/* 管理入口按钮（仅管理员可见） */
.admin-link { background: transparent; color: var(--ds-brand); border-color: rgba(77, 107, 254, .28); font-weight: 500; }
.admin-link:hover { background: var(--ds-brand-soft); border-color: rgba(77, 107, 254, .45); box-shadow: none; }

/* —— 游客首页（guest landing） —— */
.guest-shell { position: relative; z-index: 1; max-width: 1080px; margin: 0 auto; padding: 20px 24px 40px; }
.guest-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.guest-top .brand { font-size: 20px; font-weight: 700; }
.guest-top .who { display: flex; gap: 8px; }
.guest-hero { text-align: center; padding: 64px 0 40px; }
.guest-hero h1 { font-size: 40px; line-height: 1.2; letter-spacing: -.5px; }
.guest-hero p { margin-top: 12px; color: var(--ds-text-secondary); }
.guest-search { max-width: 640px; margin: 28px auto 0; box-shadow: var(--ds-shadow-pop); }
.guest-main { display: grid; gap: 32px; }
.guest-sec h2 { font-size: 16px; font-weight: 600; color: var(--ds-text-secondary); margin-bottom: 12px; }
.guest-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.guest-card { display: flex; align-items: center; gap: 10px; padding: 12px 14px; background: var(--ds-surface-solid); border-radius: var(--ds-r-card); box-shadow: var(--ds-shadow-card); text-decoration: none; color: var(--ds-text); transition: background .15s, transform .15s; }
.guest-card:hover { background: var(--ds-surface-solid-hover); transform: translateY(-2px); }
.guest-card .ic { width: 24px; height: 24px; border-radius: 6px; }
.guest-card .meta b { font-size: 14px; font-weight: 500; }
.guest-foot { margin-top: 48px; text-align: center; color: var(--ds-text-secondary); font-size: 14px; }
.guest-foot a { color: var(--ds-brand); text-decoration: none; }
@media (max-width: 640px) { .guest-hero h1 { font-size: 28px; } .guest-hero { padding: 40px 0 24px; } }

/* —— 桌面端：鼠标悬停卡片直接显示编辑按钮（触屏仍用长按 2 秒） —— */
@media (hover: hover) and (pointer: fine) {
    body.edit-mode .card:hover .ops { display: flex; }
    body.edit-mode .card:hover { outline: 2px solid var(--ds-brand); outline-offset: 2px; }
}

/* —— 触屏拖拽视觉 —— */
.touch-ghost { box-shadow: var(--ds-shadow-pop); opacity: .9 !important; }
.tab.drop-target { outline: 2px dashed var(--ds-brand); outline-offset: 2px; color: var(--ds-brand); }


/* —— 底部品牌条：Powered by 图标固化，站点名称跟随其后（后台可自定义） —— */
.foot-brand-bar {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 5;
    display: flex; align-items: center; justify-content: center; gap: 10px;
    padding: 9px 16px;
    font-size: 13px; color: var(--ds-text-secondary);
    background: rgba(249, 248, 248, .85);
    -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
    border-top: 1px solid rgba(15, 98, 254, .08);
}
.foot-brand-bar .powered { display: inline-flex; align-items: center; gap: 6px; text-decoration: none; color: inherit; opacity: .8; }
.foot-brand-bar .powered img { width: 16px; height: 16px; border-radius: 3px; }
.foot-brand-bar .site-name { font-weight: 600; color: var(--ds-text-primary, #333); }
.guest-shell { padding-bottom: 80px; }

.foot-brand-bar a.site-name { text-decoration: none; color: var(--ds-text-primary, #333); }

/* —— 管理后台：设置表单 —— */
.settings-form { max-width: 420px; display: flex; flex-direction: column; gap: 12px; }
.settings-form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--ds-text-secondary); }
.settings-form input, .settings-form select { height: 36px; padding: 0 10px; border: 1px solid #d8dee6; border-radius: 8px; background: #fff; font-size: 14px; }
.settings-form .swatches { display: flex; gap: 10px; }
.swatch.active { outline: 2px solid var(--ds-brand, #4e6ef2); outline-offset: 2px; }
.admin-tabs { margin: 16px 0 20px; }

/* —— 平铺分组（与游客页同风格） —— */
.board-head { display: none; align-items: center; gap: 14px; margin: 4px 0 18px; }
.group-sec { margin-bottom: 30px; }
.group-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.group-head .grip { display: none; color: var(--ds-text-secondary); font-size: 18px; line-height: 1; }
.group-head h2 { margin: 0; font-size: 16px; font-weight: 600; color: var(--ds-text-secondary); letter-spacing: .02em; }

/* 品牌条左侧：CC BY-SA 许可标识（官方徽章，链接到许可协议） */
.foot-brand-bar .cc { display: inline-flex; align-items: center; text-decoration: none; }
.foot-brand-bar .cc img { height: 16px; width: auto; display: block; border-radius: 2px; opacity: .85; }
.foot-brand-bar .cc:hover img { opacity: 1; }

/* —— 编辑模式：默认浏览态与游客页一致，编辑入口仅在此模式出现 —— */
.group-head .g-action { display: none; }
body.edit-mode .board-head { display: flex; }
body.edit-mode .group-head { cursor: grab; }
body.edit-mode .group-head:active { cursor: grabbing; }
body.edit-mode .group-head .grip { display: inline; }
body.edit-mode .group-head .g-action { display: inline-flex; }
body.edit-mode .card { cursor: grab; }
body.edit-mode .card:active { cursor: grabbing; }