:root {
    --bg: #fff;
    --text: #222;
    --muted: #666;
    --link: #1a0dab;
    --link-hover: #cb553e;
    --new: #e68a00;
    --border: #e5e5e5;
    --card-bg: #fff;
    --footer-text: #666;
    --input-bg: #fff;
    --input-border: #ccc;
    --btn-bg: #f5f5f5;
    --btn-border: #ccc;
    --btn-primary-bg: #006dcc;
    --btn-primary-text: #fff;
    --btn-danger-bg: #da4f49;
    --btn-danger-text: #fff;
}

[data-theme="dark"] {
    --bg: #1b1e20;
    --text: #fff;
    --muted: #666;
    --link: #ddd;
    --link-hover: #cb553e;
    --new: #ffa500;
    --border: #444;
    --card-bg: #1b1e20;
    --footer-text: #999;
    --input-bg: #333;
    --input-border: #555;
    --btn-bg: #444;
    --btn-border: #555;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
}

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 16px;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0 8px;
}

header h1 {
    margin: 0;
    font-size: 20px;
    font-weight: 400;
}

.actions {
    display: flex;
    gap: 8px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 16px 0;
}

@media (max-width: 767px) {
    .grid {
        grid-template-columns: 1fr;
    }
}

.card {
    break-inside: avoid;
    min-width: 0;
}

.card h2 {
    margin: 0 0 12px;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.card-list li {
    line-height: 24px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.card-list a {
    color: var(--link);
    text-decoration: none;
}

.card-list a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

.card-list .new {
    color: var(--new);
    font-weight: 600;
}

.card-list .meta {
    margin-right: 10px;
    color: var(--muted);
    font-size: 12px;
    font-family: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", Menlo, Consolas, monospace;
}

.card-list .meta:hover {
    color: var(--link-hover);
}

.edit-link {
    font-size: 12px;
    color: var(--muted);
    text-decoration: none;
    font-weight: 400;
}

.edit-link:hover {
    color: var(--link-hover);
}

hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}

footer {
    padding-bottom: 40px;
}

footer h3 {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 8px;
}

footer p {
    margin: 4px 0;
    color: var(--footer-text);
    font-size: 13px;
}

footer a {
    color: var(--link);
}

footer label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-overlay.open {
    display: flex;
}

.modal {
    background: var(--bg);
    border-radius: 8px;
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px 0;
}

.modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 500;
}

.modal-close {
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--muted);
    padding: 0;
    line-height: 1;
}

.modal-body {
    padding: 16px 20px;
}

.modal-body label {
    display: block;
    margin-bottom: 4px;
    font-size: 13px;
    color: var(--footer-text);
}

.modal-body input[type="text"] {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    font-size: 14px;
    background: var(--input-bg);
    color: var(--text);
    margin-bottom: 12px;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    padding: 12px 20px 16px;
    gap: 8px;
}

.modal-footer .right {
    display: flex;
    gap: 8px;
}

.btn {
    display: inline-block;
    padding: 6px 14px;
    font-size: 14px;
    border: 1px solid var(--btn-border);
    border-radius: 4px;
    cursor: pointer;
    background: var(--btn-bg);
    color: var(--text);
    text-align: center;
    line-height: 1.4;
}

.btn:hover {
    filter: brightness(0.95);
}

.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border-color: var(--btn-primary-bg);
}

.btn-danger {
    background: var(--btn-danger-bg);
    color: var(--btn-danger-text);
    border-color: var(--btn-danger-bg);
}