/* ExpBBS theme variables */
:root {
    color-scheme: light;
    --bg-color: #f3f4f1;
    --card-bg: #ffffff;
    --card-muted: #f7f8f5;
    --text-color: #20241f;
    --text-secondary: #697067;
    --btn-color: #454b46;
    --btn-text: #ffffff;
    --btn-hover: #9ca3af;
    --btn-active: #111111;
    --border-color: #dde1da;
    --link-color: #28558d;
    --success-color: #1a7f5a;
    --success-bg: #e6f4ed;
    --error-color: #b53b3b;
    --error-bg: #fbeaea;
    --header-bg: #ffffff;
    --shadow-color: rgba(32, 36, 31, 0.07);
    --radius: 8px;
    --radius-small: 6px;
}

* {
    box-sizing: border-box;
}

html {
    min-width: 0;
    background: var(--bg-color);
}

body {
    min-width: 0;
    margin: 0;
    overflow-x: hidden;
    background: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.65;
}

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

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

a:hover {
    text-decoration: underline;
}

img,
video {
    display: block;
    max-width: 100%;
    height: auto;
}

code,
pre {
    font-family: Consolas, Monaco, "Courier New", monospace;
}

.container {
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    padding-right: 16px;
    padding-left: 16px;
}

.header {
    position: sticky;
    z-index: 100;
    top: 0;
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
}

.header-inner {
    display: flex;
    min-height: 58px;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px 20px;
    padding-top: 7px;
    padding-bottom: 7px;
}

.logo {
    color: var(--text-color);
    font-size: 20px;
    font-weight: 750;
    line-height: 1.3;
}

.logo:hover {
    text-decoration: none;
}

.nav {
    display: flex;
    min-width: 0;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 14px;
}

.nav a,
.nav .link-button {
    color: var(--text-color);
    font-size: 14px;
}

.nav-search {
    display: flex;
    min-width: 190px;
    max-width: 330px;
    flex: 1 1 230px;
    flex-wrap: nowrap;
    align-items: center;
    gap: 6px;
    margin: 0;
}

.nav-search .form-control {
    width: auto;
    min-height: 36px;
    flex: 1 1 0;
    padding: 6px 9px;
    font-size: 14px;
}

.nav-search .btn {
    min-height: 36px;
    flex: 0 0 auto;
    white-space: nowrap;
}

.nav a.active,
.nav .link-button.active {
    color: var(--link-color);
    font-weight: 700;
}

.main {
    min-height: calc(100vh - 118px);
    padding-top: 28px;
    padding-bottom: 40px;
}

.page-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 18px;
}

.page-heading h1,
.auth-card h1,
.post-detail h1,
.profile-header h1,
.error-card h1 {
    margin: 0;
    font-size: 30px;
    line-height: 1.25;
}

.page-heading p,
.form-hint,
.profile-header p,
.card > p {
    margin: 4px 0 0;
    color: var(--text-secondary);
}

.eyebrow {
    margin: 0 0 4px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.card {
    margin-bottom: 18px;
    padding: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px var(--shadow-color);
}

.card h2 {
    margin: 0 0 12px;
    font-size: 20px;
    line-height: 1.35;
}

.section-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.section-heading h2 {
    margin: 0;
}

.empty-state {
    margin: 0;
    padding: 18px 0;
    color: var(--text-secondary);
    text-align: center;
}

.muted {
    color: var(--text-secondary);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
    margin-bottom: 22px;
}

.category-card {
    display: flex;
    min-width: 0;
    min-height: 132px;
    flex-direction: column;
    justify-content: space-between;
    gap: 10px;
    padding: 18px;
    color: var(--text-color);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px var(--shadow-color);
}

.category-card:hover {
    color: var(--text-color);
    border-color: #aeb6ab;
    text-decoration: none;
}

.category-card strong {
    font-size: 18px;
}

.category-card span,
.category-card small {
    color: var(--text-secondary);
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
}

.filter-bar > .form-control {
    width: auto;
    flex: 1 1 280px;
}

.filter-link {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 6px 12px;
    color: var(--text-color);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-small);
}

.filter-link:hover,
.filter-link.active {
    color: var(--text-color);
    background: #e3e5e1;
    text-decoration: none;
}

.admin-filter {
    align-items: center;
    margin-bottom: 18px;
}

.admin-filter .form-control {
    width: auto;
    min-width: 180px;
    flex: 1 1 220px;
}

.admin-filter .link-button {
    flex: 0 0 auto;
}

.post-list {
    display: grid;
    gap: 0;
}

.post-row {
    display: flex;
    min-width: 0;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.post-row:first-child {
    padding-top: 2px;
}

.post-row:last-child {
    padding-bottom: 2px;
    border-bottom: 0;
}

.post-main {
    min-width: 0;
}

.post-title {
    display: inline-block;
    max-width: 100%;
    color: var(--text-color);
    font-size: 17px;
    font-weight: 700;
    overflow-wrap: anywhere;
}

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

.meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 5px 13px;
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 13px;
}

.meta a {
    color: var(--text-secondary);
}

.post-stats {
    display: flex;
    flex: 0 0 auto;
    flex-wrap: wrap;
    gap: 6px 12px;
    color: var(--text-secondary);
    font-size: 13px;
    white-space: nowrap;
}

.post-list.compact .post-row {
    padding: 13px 0;
}

.btn {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    justify-content: center;
    padding: 8px 17px;
    color: var(--btn-text);
    background: var(--btn-color);
    border: 1px solid transparent;
    border-radius: var(--radius-small);
    cursor: pointer;
    font-size: 14px;
    font-weight: 650;
    line-height: 1.2;
    text-align: center;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:hover {
    color: #161a15;
    background: var(--btn-hover);
    border-color: var(--btn-hover);
    text-decoration: none;
}

.btn:active {
    color: #ffffff;
    background: var(--btn-active);
    border-color: var(--btn-active);
}

.btn:disabled {
    cursor: wait;
    opacity: 0.65;
}

.btn-secondary {
    color: var(--text-color);
    background: #e4e6e2;
    border-color: #d1d5cf;
}

.btn-danger {
    color: #ffffff;
    background: var(--error-color);
}

.btn-small {
    min-height: 32px;
    padding: 5px 10px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

.link-button {
    display: inline;
    margin: 0;
    padding: 0;
    color: var(--link-color);
    background: transparent;
    border: 0;
    cursor: pointer;
    font-size: 14px;
    line-height: inherit;
    text-decoration: none;
}

.link-button:hover {
    color: #555b54;
    text-decoration: underline;
}

.link-button:active {
    color: var(--btn-active);
}

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

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

.form-group {
    min-width: 0;
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 650;
}

.form-control {
    display: block;
    width: 100%;
    min-width: 0;
    min-height: 42px;
    padding: 9px 11px;
    color: var(--text-color);
    background: #ffffff;
    border: 1px solid #cfd4cc;
    border-radius: var(--radius-small);
    outline: none;
}

.form-control::placeholder {
    color: #92988f;
}

.form-control:focus {
    border-color: var(--btn-color);
    box-shadow: 0 0 0 3px rgba(49, 92, 154, 0.13);
}

.textarea {
    min-height: 110px;
    resize: vertical;
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 4px;
}

.password-form-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.form-hint {
    margin: -4px 0 18px;
    font-size: 14px;
}

.field-status {
    min-height: 22px;
    margin: 6px 0 0;
    color: var(--text-secondary);
    font-size: 13px;
}

.field-status.is-error {
    color: var(--error-color);
}

.field-status.is-success {
    color: var(--success-color);
}

.input-action {
    display: flex;
    min-width: 0;
    align-items: stretch;
    gap: 8px;
}

.input-action .form-control {
    flex: 1 1 auto;
}

.input-action .btn {
    flex: 0 0 auto;
    white-space: nowrap;
}

.auth-shell {
    display: flex;
    justify-content: center;
    padding: 20px 0 44px;
}

.auth-card {
    width: 100%;
    max-width: 460px;
    padding: 28px;
}

.auth-card h1 {
    margin-bottom: 4px;
    font-size: 26px;
}

.form-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px 16px;
    margin-top: 18px;
    font-size: 14px;
}

.alert {
    margin-bottom: 16px;
    padding: 11px 14px;
    border: 1px solid transparent;
    border-radius: var(--radius-small);
    font-size: 14px;
    overflow-wrap: anywhere;
}

.alert-success {
    color: var(--success-color);
    background: var(--success-bg);
    border-color: #b8dfcf;
}

.alert-error {
    color: var(--error-color);
    background: var(--error-bg);
    border-color: #efc5c5;
}

.profile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(88px, 1fr));
    gap: 10px;
}

.stat-box {
    display: flex;
    min-width: 0;
    min-height: 82px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 12px 10px;
    text-align: center;
}

.stat-box strong {
    font-size: 24px;
    line-height: 1.2;
}

.stat-box span {
    margin-top: 3px;
    color: var(--text-secondary);
    font-size: 13px;
}

.post-detail {
    overflow: hidden;
}

.post-detail-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 22px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border-color);
}

.post-detail-header h1 {
    margin-bottom: 8px;
    overflow-wrap: anywhere;
}

.post-actions {
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid var(--border-color);
}

.markdown-body {
    color: var(--text-color);
    overflow-wrap: anywhere;
}

.markdown-body > :first-child {
    margin-top: 0;
}

.markdown-body > :last-child {
    margin-bottom: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
    margin: 1.25em 0 0.55em;
    line-height: 1.3;
}

.markdown-body h1 {
    font-size: 27px;
}

.markdown-body h2 {
    font-size: 23px;
}

.markdown-body h3 {
    font-size: 19px;
}

.markdown-body p,
.markdown-body ul,
.markdown-body ol,
.markdown-body blockquote,
.markdown-body pre,
.markdown-body table {
    margin: 0 0 1em;
}

.markdown-body ul,
.markdown-body ol {
    padding-left: 1.6em;
}

.markdown-body blockquote {
    padding: 8px 14px;
    color: var(--text-secondary);
    background: var(--card-muted);
    border-left: 4px solid #aeb6ab;
}

.markdown-body code {
    padding: 2px 5px;
    background: #eef0ed;
    border-radius: 4px;
    font-size: 0.92em;
}

.markdown-body pre {
    max-width: 100%;
    padding: 14px;
    overflow-x: auto;
    color: #f7f8f5;
    background: #242823;
    border-radius: var(--radius-small);
}

.markdown-body pre code {
    padding: 0;
    color: inherit;
    background: transparent;
}

.markdown-body table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    border-collapse: collapse;
}

.markdown-body th,
.markdown-body td {
    padding: 7px 10px;
    border: 1px solid var(--border-color);
}

.markdown-body hr {
    border: 0;
    border-top: 1px solid var(--border-color);
}

.comments-section {
    margin-top: 28px;
}

.count-badge {
    display: inline-flex;
    min-width: 26px;
    min-height: 24px;
    align-items: center;
    justify-content: center;
    padding: 2px 7px;
    color: var(--text-secondary);
    background: #e5e7e3;
    border-radius: 999px;
    font-size: 13px;
    vertical-align: middle;
}

.comment-form {
    padding: 16px;
}

.login-prompt {
    color: var(--text-secondary);
}

.comment {
    padding: 17px;
}

.comment-header {
    display: flex;
    min-width: 0;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.comment-header > div {
    display: flex;
    min-width: 0;
    flex-wrap: wrap;
    align-items: center;
    gap: 5px 12px;
}

.comment-author {
    font-weight: 700;
}

.comment-header span,
.comment-header time {
    color: var(--text-secondary);
    font-size: 13px;
}

.comment-content {
    margin-top: 10px;
    overflow-wrap: anywhere;
    white-space: normal;
}

.comment-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 10px 14px;
    margin-top: 12px;
}

.like-button {
    display: inline-flex;
    min-height: 36px;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    color: var(--text-color);
    background: #eceeeb;
    border: 1px solid #d7dbd4;
    border-radius: var(--radius-small);
    cursor: pointer;
    font-size: 14px;
}

.like-button:hover {
    color: #161a15;
    background: var(--btn-hover);
    text-decoration: none;
}

.like-button:active {
    color: #ffffff;
    background: var(--btn-active);
}

.like-button.liked {
    color: #8e2727;
    background: #f8dddd;
    border-color: #e8b8b8;
}

.like-button-small {
    min-height: 31px;
    padding: 4px 9px;
    font-size: 13px;
}

.reply-details {
    min-width: 0;
    flex: 1 1 320px;
}

.reply-details > summary {
    display: inline-block;
    color: var(--link-color);
    cursor: pointer;
    font-size: 13px;
}

.reply-form {
    display: grid;
    gap: 8px;
    margin-top: 9px;
}

.reply-list {
    display: grid;
    gap: 12px;
    margin-top: 16px;
    padding-left: 18px;
}

.reply {
    min-width: 0;
    padding: 13px 14px;
    background: var(--card-muted);
    border-left: 3px solid #b8beb6;
    border-radius: 0 var(--radius-small) var(--radius-small) 0;
}

.pagination {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 7px;
    margin-top: 20px;
}

.page-link {
    display: inline-flex;
    min-width: 36px;
    min-height: 36px;
    align-items: center;
    justify-content: center;
    padding: 5px 9px;
    color: var(--text-color);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-small);
}

.page-link:hover,
.page-link.current {
    color: var(--text-color);
    background: #e3e5e1;
    text-decoration: none;
}

.table-card {
    padding: 0;
    overflow: hidden;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    min-width: 720px;
    border-collapse: collapse;
}

th,
td {
    padding: 11px 13px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--text-secondary);
    background: var(--card-muted);
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
}

tbody tr:last-child td {
    border-bottom: 0;
}

.table-content {
    min-width: 230px;
    max-width: 420px;
    overflow-wrap: anywhere;
}

.admin-header .logo {
    font-size: 18px;
}

.admin-shell {
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: start;
    gap: 18px;
    padding-top: 24px;
    padding-bottom: 40px;
}

.admin-sidebar {
    position: sticky;
    top: 78px;
    display: grid;
    gap: 4px;
    padding: 10px;
}

.admin-sidebar a {
    display: block;
    padding: 8px 10px;
    color: var(--text-color);
    border-radius: var(--radius-small);
    font-size: 14px;
}

.admin-sidebar a:hover,
.admin-sidebar a.active {
    background: #e4e6e2;
    text-decoration: none;
}

.admin-main {
    min-width: 0;
}

.admin-stats {
    grid-template-columns: repeat(4, minmax(110px, 1fr));
    margin-bottom: 22px;
}

.admin-stats .stat-box {
    margin: 0;
}

.inline-form-grid {
    display: grid;
    grid-template-columns: minmax(150px, 1fr) minmax(190px, 2fr) 100px auto;
    align-items: start;
    gap: 10px;
}

.form-control-small {
    min-height: 36px;
    padding: 6px 8px;
}

.inline-settings {
    display: flex;
    min-width: 330px;
    flex-wrap: wrap;
    gap: 7px;
}

.category-admin-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.category-admin-row:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.category-admin-row p {
    margin: 3px 0 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.category-admin-row details {
    flex: 0 0 min(460px, 100%);
}

.category-admin-row summary {
    color: var(--link-color);
    cursor: pointer;
    text-align: right;
}

.category-edit-form {
    display: grid;
    gap: 8px;
    margin: 10px 0;
}

.error-card {
    max-width: 620px;
    margin: 40px auto;
    padding: 34px;
    text-align: center;
}

.error-code {
    margin: 0;
    color: var(--text-secondary);
    font-size: 52px;
    font-weight: 800;
    line-height: 1;
}

.error-card h1 {
    margin: 14px 0 8px;
}

.error-card .btn {
    margin-top: 16px;
}

.footer {
    padding: 18px 0;
    color: var(--text-secondary);
    background: var(--header-bg);
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    text-align: center;
}

.footer p {
    margin: 0;
}

:focus-visible {
    outline: 3px solid rgba(49, 92, 154, 0.35);
    outline-offset: 2px;
}

@media (max-width: 820px) {
    .admin-shell {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        position: static;
        grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    }

    .admin-stats {
        grid-template-columns: repeat(2, minmax(110px, 1fr));
    }

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

@media (max-width: 640px) {
    .container {
        padding-right: 12px;
        padding-left: 12px;
    }

    .header-inner {
        gap: 6px 12px;
    }

    .nav {
        width: 100%;
        gap: 5px 11px;
    }

    .nav-search {
        order: -1;
        width: 100%;
        max-width: none;
        flex-basis: 100%;
    }

    .nav-search .form-control {
        flex: 1 1 auto;
    }

    .main {
        padding-top: 20px;
        padding-bottom: 28px;
    }

    .page-heading,
    .profile-header,
    .post-detail-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .page-heading h1,
    .post-detail h1,
    .profile-header h1 {
        font-size: 25px;
    }

    .page-heading .btn {
        width: 100%;
    }

    .card {
        padding: 16px;
    }

    .post-row {
        flex-direction: column;
        gap: 9px;
    }

    .post-stats {
        white-space: normal;
    }

    .input-action {
        flex-direction: column;
    }

    .input-action .btn {
        width: 100%;
    }

    .auth-shell {
        padding-top: 4px;
    }

    .auth-card {
        padding: 20px 16px;
    }

    .profile-header {
        width: 100%;
    }

    .stat-grid {
        width: 100%;
    }

    .comment-header,
    .category-admin-row {
        flex-direction: column;
    }

    .category-admin-row details {
        width: 100%;
        flex-basis: auto;
    }

    .category-admin-row summary {
        text-align: left;
    }

    .reply-details {
        width: 100%;
        flex-basis: auto;
    }

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

    .admin-filter .form-control,
    .admin-filter .btn {
        width: 100%;
        flex-basis: auto;
    }

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

    .admin-stats {
        grid-template-columns: 1fr 1fr;
    }

    .error-card {
        margin-top: 12px;
        padding: 26px 16px;
    }
}

@media (max-width: 375px) {
    .logo {
        font-size: 18px;
    }

    .nav a,
    .nav .link-button {
        font-size: 13px;
    }

    .stat-grid,
    .admin-stats {
        grid-template-columns: 1fr;
    }

    .stat-box {
        min-height: 68px;
    }

    .reply-list {
        padding-left: 8px;
    }
}