:root {
    --bg: #f6f6f7;
    --panel: #ffffff;
    --text: #1c1c1e;
    --muted: #6b6b70;
    --border: #e2e2e5;
    --accent: #2563eb;
    --accent-soft: #e8effd;
    --danger: #b42318;
    --radius: 10px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #131315;
        --panel: #1c1c1f;
        --text: #ececf1;
        --muted: #9a9aa2;
        --border: #2c2c31;
        --accent: #7aa2f7;
        --accent-soft: #1e2a44;
        --danger: #f2777a;
    }
}

* {
    box-sizing: border-box;
}

/* `.login` and `.menu-panel` below set `display`, which would otherwise win over
   the user-agent rule for [hidden] and leave the login form on top of the list. */
[hidden] {
    display: none !important;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC",
        "PingFang SC", "Microsoft YaHei", sans-serif;
}

button,
input,
textarea {
    font: inherit;
    color: inherit;
}

button {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    cursor: pointer;
}

button:hover {
    border-color: var(--accent);
}

button.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

button.danger:hover {
    border-color: var(--danger);
    color: var(--danger);
}

button.link {
    padding: 0;
    border: 0;
    background: none;
    color: var(--accent);
    text-decoration: underline;
}

button.link:hover {
    border: 0;
}

button:disabled {
    opacity: 0.6;
    cursor: default;
}

input,
textarea {
    width: 100%;
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
}

input:focus,
textarea:focus {
    outline: 2px solid var(--accent-soft);
    border-color: var(--accent);
}

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

a:hover {
    text-decoration: underline;
}

/* login ------------------------------------------------------------------ */

.login {
    display: grid;
    place-items: center;
    min-height: 100vh;
}

.login form {
    display: grid;
    gap: 12px;
    width: min(320px, 88vw);
    padding: 28px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.login h1 {
    margin: 0 0 4px;
    font-size: 20px;
}

.error {
    margin: 0;
    color: var(--danger);
    font-size: 13px;
}

/* layout ----------------------------------------------------------------- */

.topbar {
    position: sticky;
    top: 0;
    z-index: 5;
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 12px 18px;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

.search {
    flex: 1;
}

.sort {
    max-width: 130px;
    padding: 7px 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    color: inherit;
    font: inherit;
}

.menu {
    position: relative;
}

.menu-panel {
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    min-width: 210px;
    display: grid;
    gap: 4px;
    padding: 8px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgb(0 0 0 / 12%);
    text-align: left;
}

.menu-panel button,
.menu-panel .file {
    display: block;
    width: 100%;
    padding: 7px 9px;
    border: 0;
    border-radius: 6px;
    background: none;
    text-align: left;
    cursor: pointer;
}

.menu-panel button:hover,
.menu-panel .file:hover {
    background: var(--accent-soft);
}

.menu-panel hr {
    width: 100%;
    margin: 4px 0;
    border: 0;
    border-top: 1px solid var(--border);
}

.menu-user {
    margin: 0;
    padding: 6px 9px 2px;
    font-size: 12px;
    color: var(--muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.checkbox {
    display: flex;
    gap: 8px;
    align-items: center;
    padding: 7px 9px;
    font-size: 14px;
    color: var(--muted);
}

.checkbox input {
    width: auto;
}

.layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 22px;
    max-width: 1080px;
    margin: 0 auto;
    padding: 20px 18px 60px;
}

.sidebar {
    position: sticky;
    top: 74px;
    align-self: start;
    display: grid;
    gap: 2px;
    font-size: 14px;
}

.sidebar h2 {
    margin: 14px 0 4px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
}

.sidebar button {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 5px 9px;
    border: 0;
    background: none;
    text-align: left;
    font-size: 14px;
}

.sidebar button:hover {
    background: var(--accent-soft);
}

.sidebar button.active,
.sidebar .tag-row.active .tag-filter-button {
    background: var(--accent-soft);
    font-weight: 600;
}

.tag-search {
    margin: 4px 0 6px;
    padding: 5px 9px;
    font-size: 13px;
}

.tag-row {
    display: flex;
    align-items: center;
    gap: 2px;
}

.tag-row .tag-filter-button {
    flex: 1;
    min-width: 0;
}

.tag-row .tag-filter-button span:first-child {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tag-delete {
    padding: 2px 6px;
    border: 0;
    background: none;
    color: var(--muted);
    opacity: 0;
    cursor: pointer;
}

.tag-row:hover .tag-delete,
.tag-delete:focus-visible {
    opacity: 1;
}

.tag-delete:hover {
    background: none;
    color: var(--danger);
}

.sidebar .count {
    color: var(--muted);
    font-variant-numeric: tabular-nums;
}

/* list ------------------------------------------------------------------- */

/* Bulk edit toolbar: sticky, so it stays reachable while scrolling a long list. */
.bulk {
    position: sticky;
    top: 62px;
    z-index: 4;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-bottom: 12px;
    padding: 8px 12px;
    background: var(--accent-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
}

.bulk .checkbox {
    padding: 0;
}

.bulk-count {
    color: var(--muted);
    font-variant-numeric: tabular-nums;
}

.bulk-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-left: auto;
}

.bulk-actions button {
    padding: 3px 9px;
    font-size: 12px;
}

.status {
    margin: 0 0 12px;
    color: var(--muted);
    font-size: 13px;
}

.list {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.card {
    display: flex;
    gap: 10px;
    padding: 12px 14px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.card.unread {
    border-left: 3px solid var(--accent);
}

.card-select {
    display: flex;
    align-self: flex-start;
    padding-top: 4px;
    cursor: pointer;
}

.card-select input {
    width: auto;
    margin: 0;
    cursor: pointer;
}

.card-main {
    flex: 1;
    min-width: 0;
}

.card h3 {
    margin: 0 0 2px;
    font-size: 15px;
    font-weight: 600;
}

.card .url {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 12px;
    overflow-wrap: anywhere;
}

.card p {
    margin: 0 0 8px;
    color: var(--text);
    font-size: 14px;
}

.card .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}

.chip {
    padding: 1px 8px;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 12px;
    color: var(--muted);
    cursor: pointer;
}

.chip:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.card .meta {
    display: flex;
    gap: 12px;
    align-items: center;
    color: var(--muted);
    font-size: 12px;
}

.card .actions {
    display: flex;
    gap: 8px;
    margin-left: auto;
}

.card .actions button {
    padding: 2px 8px;
    font-size: 12px;
}

.more {
    display: block;
    margin: 18px auto 0;
}

/* editor ----------------------------------------------------------------- */

dialog {
    width: min(540px, 92vw);
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel);
    color: var(--text);
}

dialog::backdrop {
    background: rgb(0 0 0 / 45%);
}

dialog h2 {
    margin: 0 0 14px;
    font-size: 17px;
}

dialog label {
    display: block;
    margin-bottom: 10px;
    font-size: 13px;
    color: var(--muted);
}

dialog label input,
dialog label textarea {
    margin-top: 4px;
}

dialog .row {
    display: flex;
    gap: 12px;
    align-items: center;
}

dialog .row.end {
    justify-content: flex-end;
    margin-top: 14px;
}

/* tag autocomplete -------------------------------------------------------- */

.tag-field {
    position: relative;
}

.suggest {
    position: absolute;
    z-index: 2;
    right: 0;
    left: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
    padding: 8px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px rgb(0 0 0 / 18%);
}

.suggest button {
    padding: 2px 9px;
    border-radius: 999px;
    font-size: 12px;
}

.hint {
    margin: -4px 0 10px;
    font-size: 12px;
    color: var(--muted);
}

.hint.warn {
    color: var(--danger);
}

/* toasts ------------------------------------------------------------------ */

.toast {
    position: fixed;
    bottom: 22px;
    left: 50%;
    z-index: 10;
    max-width: min(520px, 90vw);
    padding: 9px 16px;
    transform: translateX(-50%);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 999px;
    box-shadow: 0 8px 26px rgb(0 0 0 / 22%);
    font-size: 13px;
}

.toast.error {
    color: var(--danger);
    border-color: var(--danger);
}

@media (max-width: 720px) {
    .layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .sidebar {
        position: static;
    }

    .sort {
        max-width: 96px;
    }

    .bulk {
        top: 58px;
    }

    .bulk-actions {
        margin-left: 0;
    }
}