:root {
    color-scheme: light;
    --bg: #f6f8f7;
    --surface: #ffffff;
    --surface-soft: #fafbfb;
    --text: #172221;
    --muted: #63716f;
    --weak: #8a9694;
    --border: #dfe6e3;
    --border-strong: #cbd8d5;
    --primary: #0f766e;
    --primary-hover: #0b5f58;
    --primary-soft: #eef8f6;
    --primary-line: #8acfc8;
    --ok: #067647;
    --ok-soft: #eefbf4;
    --danger: #b42318;
    --danger-soft: #fff3f1;
    --warn: #8a5a00;
    --warn-soft: #fff8e6;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--text);
    background: var(--bg);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.55;
}

button,
input {
    font: inherit;
}

a {
    color: inherit;
    text-decoration: none;
}

p,
h1,
h2,
h3 {
    margin: 0;
}

.page {
    width: min(860px, calc(100% - 32px));
    margin: 0 auto;
    padding: 28px 0 56px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
    font-size: 22px;
    font-weight: 700;
}

.brand-mark,
.login-mark {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--primary-line);
    border-radius: 10px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 14px;
    font-weight: 700;
}

.login-card {
    width: min(440px, 100%);
    margin: 8vh auto;
    padding: 26px;
}

.login-mark {
    margin-bottom: 14px;
}

.card {
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    background: var(--surface);
}

.card-pad {
    padding: 26px;
}

.stack,
.form-stack,
.candidate-list {
    display: grid;
    gap: 20px;
}

.stack-sm {
    display: grid;
    gap: 6px;
}

.section-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}

h1 {
    font-size: 26px;
    line-height: 1.25;
}

h2 {
    font-size: 20px;
    line-height: 1.3;
}

h3 {
    font-size: 18px;
    line-height: 1.35;
}

.subtle,
.tiny {
    color: var(--muted);
}

.tiny {
    font-size: 13px;
}

label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 500;
}

input[type="url"],
input[type="text"],
input[type="password"],
input:not([type]) {
    width: 100%;
    min-height: 52px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--text);
    padding: 12px 14px;
    outline: none;
}

input:focus {
    border-color: var(--primary-line);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--text);
    cursor: pointer;
    padding: 0 16px;
    white-space: nowrap;
}

.btn:hover {
    border-color: var(--primary-line);
    color: var(--primary);
}

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

.btn-primary:hover {
    border-color: var(--primary-hover);
    background: var(--primary-hover);
    color: #fff;
}

.btn-primary:disabled {
    border-color: var(--border-strong);
    background: var(--border);
    color: var(--weak);
    cursor: not-allowed;
}

.btn-ghost {
    border-color: transparent;
    background: transparent;
    color: var(--muted);
}

.btn-soft {
    border-color: var(--primary-line);
    background: var(--primary-soft);
    color: var(--primary);
}

.btn-danger-soft {
    border-color: #efb7b0;
    background: var(--danger-soft);
    color: var(--danger);
}

.action-link {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    border: 0;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    padding: 0;
    font: inherit;
    font-size: 14px;
    white-space: nowrap;
}

.action-link:hover,
.action-link:focus-visible {
    color: var(--primary);
}

.action-danger {
    color: var(--danger);
}

.copy-action {
    min-width: 4.5em;
}

.inline-form,
.feed-actions form {
    margin: 0;
}

.inline-source-form {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 14px;
}

.inline-source-form .btn {
    min-height: 52px;
}

.field-row,
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 0.62fr;
    gap: 14px;
}

.feed-list,
.sample-list {
    display: grid;
    gap: 10px;
}

.feed-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface-soft);
    padding: 14px;
}

.feed-title-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 7px;
}

.title-editor {
    position: relative;
}

.title-editor[open] {
    flex-basis: 100%;
}

.title-editor summary {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    color: var(--muted);
    cursor: pointer;
    font-size: 13px;
    list-style: none;
}

.title-editor summary::-webkit-details-marker {
    display: none;
}

.title-editor summary:hover,
.title-editor summary:focus-visible {
    color: var(--primary);
}

.title-edit-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 10px;
    width: min(100%, 520px);
    margin-top: 8px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fff;
}

.title-edit-actions {
    display: flex;
    gap: 8px;
}

.rss-line {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 7px;
    color: var(--muted);
    font-size: 13px;
}

.rss-path {
    display: inline-flex;
    align-items: center;
    max-width: 100%;
    border: 1px solid var(--border);
    border-radius: 7px;
    background: #fff;
    color: #41504e;
    padding: 2px 7px;
    font-family: var(--mono);
    font-size: 12px;
    line-height: 1.6;
    overflow-wrap: anywhere;
}

.rss-preview {
    color: var(--muted);
    font-size: 14px;
}

.feed-actions,
.top-actions {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.status {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 2px 8px;
    font-size: 12px;
}

.status-ok {
    background: var(--ok-soft);
    color: var(--ok);
}

.status-failed {
    background: var(--danger-soft);
    color: var(--danger);
}

.status-never {
    background: var(--warn-soft);
    color: var(--warn);
}

.error,
.error-note {
    color: var(--danger);
    font-weight: 600;
}

.error-note {
    margin-top: 8px;
    font-size: 13px;
}

.empty-state {
    display: grid;
    place-items: center;
    min-height: 118px;
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-md);
    background: var(--surface-soft);
    color: var(--muted);
    text-align: center;
    padding: 18px;
}

.empty-state p:first-child {
    color: var(--text);
    font-weight: 600;
}

.divider {
    height: 1px;
    margin: 0;
    background: var(--border);
}

.hint-box {
    border: 1px solid var(--primary-line);
    border-radius: var(--radius-md);
    background: var(--primary-soft);
    padding: 12px 13px;
    color: #255350;
    font-size: 14px;
}

.hint-title {
    margin-bottom: 3px;
    color: var(--primary-hover);
    font-weight: 600;
}

.sample-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.toolbar-counters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.counter {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #fff;
    color: var(--muted);
    padding: 4px 9px;
    font-size: 13px;
}

.sample-card {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #fff;
    padding: 12px 13px;
    color: var(--text);
    cursor: pointer;
}

.sample-card > span {
    min-width: 0;
}

.sample-card:hover {
    border-color: var(--border-strong);
    background: #fcfdfd;
}

.sample-card.is-selected {
    border-color: var(--primary);
    border-left-width: 4px;
    background: var(--primary-soft);
}

.sample-check {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--primary);
}

.sample-title-row {
    display: flex;
    min-width: 0;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 3px;
}

.sample-title {
    min-width: 0;
    color: #12201f;
    font-size: 16px;
    line-height: 1.36;
    overflow-wrap: anywhere;
}

.sample-badge {
    flex: 0 0 auto;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #fff;
    color: var(--muted);
    padding: 1px 7px;
    font-size: 12px;
    line-height: 1.6;
}

.is-selected .sample-badge {
    border-color: var(--primary-line);
    color: var(--primary);
}

.sample-url {
    display: block;
    margin-bottom: 3px;
    color: var(--muted);
    font-family: var(--mono);
    font-size: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sample-summary {
    display: block;
    color: var(--weak);
    font-size: 13px;
    line-height: 1.45;
}

.footer-actions {
    position: sticky;
    bottom: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-top: 4px;
    border-top: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.96);
    padding: 14px 0 0;
}

code {
    border-radius: 5px;
    background: var(--primary-soft);
    color: var(--primary-hover);
    padding: 0.15rem 0.35rem;
}

@media (max-width: 760px) {
    .page {
        width: min(100% - 20px, 860px);
        padding-top: 14px;
    }

    .card-pad,
    .login-card {
        padding: 18px;
    }

    .field-row,
    .grid-2,
    .inline-source-form,
    .feed-item {
        grid-template-columns: 1fr;
    }

    .section-head,
    .topbar,
    .footer-actions,
    .sample-toolbar {
        align-items: stretch;
        flex-direction: column;
    }

    .brand {
        font-size: 20px;
    }

    .top-actions,
    .feed-actions {
        flex-wrap: wrap;
    }

    .title-edit-form {
        grid-template-columns: 1fr;
    }

    .btn,
    .feed-actions form,
    .feed-actions button,
    .feed-actions a,
    .inline-source-form button {
        width: 100%;
    }
}