/* Tài khoản: ổ khóa ở chương dành cho thành viên, mục «Tài khoản» trong bảng cài đặt, trang đăng nhập và quản trị. */
.lock { display: inline-flex; vertical-align: -2px; margin-left: 6px; color: var(--ink2); }
.lock svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.ch-head .meta .lock { margin-left: 0; margin-right: 2px; }
.toc li[data-vis="members"] a { color: inherit; }

/* menu tài khoản (ảnh đại diện ở thanh trên) */
.um { position: absolute; top: calc(100% + 6px); right: clamp(14px, 3vw, 32px); z-index: 60; width: min(264px, calc(100vw - 20px)); padding: 6px; background: var(--flour); border: 1.5px solid var(--ink); border-radius: 14px; box-shadow: var(--shadow), 0 14px 34px rgba(42, 33, 24, .2); }
.um[hidden] { display: none; }
.um-who { display: grid; gap: 1px; padding: 8px 10px 10px; margin-bottom: 4px; border-bottom: 1px solid var(--line); }
.um-who b { font: 700 15px var(--display); color: var(--ink); overflow-wrap: anywhere; }
.um-who small { font: 400 12.5px var(--display); color: var(--ink2); overflow-wrap: anywhere; }
.um-role { justify-self: start; margin-top: 4px; padding: 1px 9px; border-radius: 999px; background: #fdf3d9; color: var(--wheat-d); font: 600 11.5px var(--display); }
.um a, .um button { display: block; width: 100%; padding: 9px 10px; border: 0; border-radius: 8px; background: transparent; color: var(--ink); font: 600 14px var(--display); text-align: left; text-decoration: none; cursor: pointer; }
.um a:hover, .um button:hover { background: rgba(42, 33, 24, .07); }
.um a:focus-visible, .um button:focus-visible { outline: 3px solid var(--river); outline-offset: -2px; }

/* trang đăng nhập / đăng ký */
.auth [hidden], .admin [hidden] { display: none !important; }   /* display của form/tab bên dưới không được thắng thuộc tính hidden */
.auth-tabs { display: inline-flex; margin: 4px 0 18px; border: 1.5px solid var(--ink); border-radius: 999px; overflow: hidden; }
.auth-tabs button { font: 600 14px var(--display); padding: 8px 20px; border: 0; background: var(--flour); color: var(--ink); cursor: pointer; }
.auth-tabs button + button { border-left: 1.5px solid var(--ink); }
.auth-tabs button[aria-selected="true"] { background: var(--ink); color: var(--paper); }
.auth-form { display: grid; gap: 14px; max-width: 420px; }
.auth-form label { display: grid; gap: 4px; font: 600 14px var(--display); color: var(--ink); }
.auth-form label[hidden] { display: none; }
.auth-form input { font: 400 16px var(--display); padding: 10px 12px; border: 1.5px solid var(--ink); border-radius: 8px; background: #fff; color: var(--ink); width: 100%; }
.auth-form input:focus-visible { outline: 3px solid var(--river); outline-offset: 1px; }
.auth-form .f-hint { font: 400 12.5px var(--display); color: var(--ink2); }
.auth-form .btn { justify-self: start; border: 0; cursor: pointer; }
.auth-form .btn:disabled { opacity: .55; cursor: default; }
.auth-msg { min-height: 1.4em; margin: 0; font: 600 14px var(--display); color: var(--tomato); }
.auth-note { margin-top: 18px; padding: 12px 14px; background: #fdf3d9; border: 1px solid var(--line); border-radius: 10px; font: 500 14.5px var(--display); }
.auth-note[hidden] { display: none; }

/* trang quản trị */
.admin section { margin: 28px 0; }
.admin h2 { margin: 0 0 6px; }
.admin-msg { min-height: 1.5em; margin: 0 0 8px; font: 600 14px var(--display); color: var(--wheat-d); }
.admin-msg.bad { color: var(--tomato); }
.ad-table { overflow-x: auto; }
.ad-table table { width: 100%; border-collapse: collapse; font: 400 15px var(--display); background: var(--flour); border: 1px solid var(--line); border-radius: 10px; }
.ad-table th { text-align: left; font: 700 12px var(--display); text-transform: uppercase; letter-spacing: .06em; color: var(--ink2); padding: 8px 12px; border-bottom: 1px solid var(--line); }
.ad-table td { padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.ad-table tr:last-child td { border-bottom: 0; }
.ad-table select, .ad-table button { font: 600 13.5px var(--display); padding: 5px 10px; border: 1.5px solid var(--ink); border-radius: 8px; background: #fff; color: var(--ink); cursor: pointer; }
.ad-table select:disabled, .ad-table button:disabled { opacity: .5; cursor: default; }
.ad-table .off td { opacity: .55; }
.ad-table small { color: var(--ink2); }
.ad-pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font: 600 12.5px var(--display); background: #e7f2e8; color: #2e7d32; }
.ad-pill.lock-on { background: #fdf3d9; color: var(--wheat-d); }
.ad-switch { display: inline-flex; gap: 10px; align-items: center; font: 500 15px var(--display); cursor: pointer; }
.ad-switch input { width: 18px; height: 18px; accent-color: var(--wheat-d); }
@media (max-width: 620px) { .ad-table th:nth-child(n+4), .ad-table td:nth-child(n+4) { display: none; } }
.ad-acts { white-space: nowrap; } .ad-acts button + button { margin-left: 6px; }
.ad-add { margin-top: 14px; } .ad-add summary { cursor: pointer; font: 600 15px var(--display); } .ad-add form { margin-top: 12px; }
.acct-who { margin: 0 0 18px; font: 500 17px var(--display); } .acct-who small { font-size: 14px; color: var(--ink2); }
#acct-view h2 { margin: 10px 0 8px; }