:root {
    --bg: #ffffff;
    --text: #111111;
    --muted: #666666;
    --border: #dddddd;
    --panel: #ffffff;
    --panel-soft: #f7f7f7;
    --button-bg: #ffffff;
    --button-text: #111111;
    --button-dark-bg: #111111;
    --button-dark-text: #ffffff;
    --danger: #8a1f11;
    --success-bg: #eef8ee;
    --success-text: #1f5f1f;
    --error-bg: #fff0ed;
    --error-text: #8a1f11;
}

html[data-theme="dark"] {
    --bg: #111111;
    --text: #f3f3f3;
    --muted: #aaaaaa;
    --border: #333333;
    --panel: #171717;
    --panel-soft: #202020;
    --button-bg: #171717;
    --button-text: #f3f3f3;
    --button-dark-bg: #f3f3f3;
    --button-dark-text: #111111;
    --danger: #ff8a75;
    --success-bg: #183018;
    --success-text: #bff0bf;
    --error-bg: #331b17;
    --error-text: #ffb3a6;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.55;
}

a {
    color: inherit;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

a:hover,
a:focus {
    text-decoration-thickness: 2px;
}

button,
input {
    font: inherit;
}

.app-shell {
    width: min(100%, 1040px);
    margin: 0 auto;
    padding: 24px;
}

.site-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    padding: 0 0 28px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 28px;
}

.brand {
    display: inline-block;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    text-decoration: none;
}

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

.tagline {
    margin: 4px 0 0;
    font-size: 0.95rem;
}

.top-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.95rem;
}

.top-nav a {
    text-decoration: none;
    border: 1px solid var(--border);
    padding: 7px 11px;
    border-radius: 999px;
    background: var(--button-bg);
}

.content {
    padding-bottom: 48px;
}

h1,
h2 {
    line-height: 1.12;
    letter-spacing: -0.04em;
}

h1 {
    margin: 0 0 8px;
    font-size: clamp(2rem, 6vw, 4.5rem);
}

h2 {
    margin: 0 0 16px;
    font-size: 1.35rem;
}

.panel,
.empty-state,
.feed-item {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 18px;
}

.panel,
.empty-state {
    padding: 24px;
    margin-bottom: 22px;
}

.narrow-panel {
    max-width: 560px;
    margin-inline: auto;
}

.stacked-form {
    display: grid;
    gap: 16px;
}

.stacked-form h2 {
    margin-top: 10px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

label {
    display: grid;
    gap: 6px;
    font-weight: 700;
}

input[type="text"],
input[type="url"],
input[type="password"] {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 14px;
    background: var(--bg);
    color: var(--text);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--button-bg);
    color: var(--button-text);
    padding: 8px 13px;
    min-height: 38px;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
}

.button:hover,
.button:focus {
    border-color: var(--text);
}

.button-dark {
    background: var(--button-dark-bg);
    border-color: var(--button-dark-bg);
    color: var(--button-dark-text);
}

.full-width {
    width: 100%;
}

.small-button {
    min-height: 32px;
    padding: 5px 10px;
    font-size: 0.9rem;
}

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

.inline-form {
    display: inline-flex;
    margin: 0;
}

.flash {
    border-radius: 14px;
    padding: 12px 14px;
    margin: 0 0 18px;
    border: 1px solid var(--border);
}

.flash-success {
    background: var(--success-bg);
    color: var(--success-text);
}

.flash-error {
    background: var(--error-bg);
    color: var(--error-text);
}

.reader-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
}

.reader-head p {
    margin: 0;
}

.reader-actions {
    display: flex;
    justify-content: flex-end;
}

.item-list {
    display: grid;
    gap: 14px;
}

.feed-item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 18px;
    padding: 20px;
}

.feed-item.is-read {
    background: var(--panel-soft);
}

.item-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 8px;
    color: var(--muted);
    font-size: 0.88rem;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 1px 7px;
    color: var(--text);
    font-size: 0.78rem;
}

.feed-item h2 {
    margin: 0;
    font-size: clamp(1.25rem, 3vw, 2rem);
}

.feed-item h2 a {
    text-decoration: none;
}

.feed-item h2 a:hover,
.feed-item h2 a:focus {
    text-decoration: underline;
}

.excerpt {
    margin: 10px 0 0;
    color: var(--muted);
}

.item-actions {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
}

.feed-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 10px;
    align-items: center;
}

.feed-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 18px;
}

.feed-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 780px;
    background: var(--panel);
}

.feed-table th,
.feed-table td {
    padding: 14px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.feed-table th {
    font-size: 0.85rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.feed-table tr:last-child td {
    border-bottom: 0;
}

.table-note {
    display: block;
    color: var(--muted);
    margin-top: 4px;
    font-size: 0.9rem;
}

.table-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.url-cell {
    word-break: break-all;
}

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

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 760px) {
    .app-shell {
        padding: 16px;
    }

    .site-header,
    .reader-head,
    .feed-item {
        display: grid;
    }

    .top-nav {
        justify-content: flex-start;
    }

    .reader-actions {
        justify-content: flex-start;
    }

    .feed-item {
        grid-template-columns: 1fr;
    }

    .item-actions {
        flex-direction: row;
        flex-wrap: wrap;
    }

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

    .button,
    .top-nav a {
        min-height: 42px;
    }
}