/* KNN 留言板 1.0.0 */

.kgb {
    --kgb-accent: #4f8cff;
    --kgb-bg: #ffffff;
    --kgb-soft: #f6f7f9;
    --kgb-line: #ebecef;
    --kgb-text: #1f2328;
    --kgb-muted: #8b909a;
    --kgb-radius: 16px;
    --kgb-shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 10px 28px rgba(16, 24, 40, .05);

    margin: 0 0 2.2em;
    color: var(--kgb-text);
    font-size: 15px;
    line-height: 1.7;
    -webkit-text-size-adjust: 100%;
}

body.dark-mode .kgb {
    --kgb-bg: #1c1f24;
    --kgb-soft: #23272e;
    --kgb-line: #2f343c;
    --kgb-text: #e5e7ea;
    --kgb-muted: #8d94a0;
    --kgb-shadow: 0 1px 2px rgba(0, 0, 0, .22), 0 10px 28px rgba(0, 0, 0, .26);
}

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

/* ---------- 头部 ---------- */

.kgb-head {
    margin-bottom: 18px;
}

.kgb-title {
    margin: 0 0 6px;
    font-size: 22px;
    font-weight: 650;
    letter-spacing: -.01em;
    line-height: 1.35;
}

.kgb-desc {
    margin: 0;
    color: var(--kgb-muted);
    font-size: 14px;
}

.kgb-total {
    display: inline-block;
    margin-top: 8px;
    font-size: 12.5px;
    color: var(--kgb-muted);
}

.kgb-total b {
    color: var(--kgb-text);
    font-weight: 600;
}

/* ---------- 表单 ---------- */

.kgb-form {
    background: var(--kgb-bg);
    border: 1px solid var(--kgb-line);
    border-radius: var(--kgb-radius);
    padding: 20px 20px 16px;
    box-shadow: var(--kgb-shadow);
}

.kgb-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 14px;
}

.kgb-field {
    position: relative;
    margin: 0 0 14px;
}

.kgb-field-wide {
    grid-column: 1 / -1;
}

.kgb-field label {
    display: block;
    margin-bottom: 6px;
    font-size: 12.5px;
    font-weight: 500;
    color: var(--kgb-muted);
}

.kgb-field label i {
    font-style: normal;
    color: #e5484d;
}

.kgb input[type="text"],
.kgb input[type="email"],
.kgb input[type="url"],
.kgb textarea {
    width: 100%;
    margin: 0;
    padding: 10px 13px;
    font: inherit;
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--kgb-text);
    background: var(--kgb-soft);
    border: 1px solid transparent;
    border-radius: 11px;
    box-shadow: none;
    transition: background .16s ease, border-color .16s ease;
    appearance: none;
}

.kgb textarea {
    display: block;
    min-height: 118px;
    resize: vertical;
}

.kgb input::placeholder,
.kgb textarea::placeholder {
    color: var(--kgb-muted);
    opacity: .8;
}

.kgb input:focus,
.kgb textarea:focus {
    outline: none;
    background: var(--kgb-bg);
    border-color: var(--kgb-accent);
}

.kgb input[aria-invalid="true"],
.kgb textarea[aria-invalid="true"] {
    border-color: #e5484d;
    background: var(--kgb-bg);
}

.kgb-counter {
    position: absolute;
    right: 4px;
    bottom: -18px;
    font-size: 11.5px;
    color: var(--kgb-muted);
    opacity: 0;
    transition: opacity .16s ease;
}

.kgb-field:focus-within .kgb-counter {
    opacity: 1;
}

.kgb-counter.is-over b {
    color: #e5484d;
}

.kgb-hp {
    position: absolute !important;
    left: -9999px !important;
    top: auto !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
    margin: 0 !important;
    padding: 0 !important;
}

.kgb-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.kgb-submit,
.kgb-more {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 22px;
    font: inherit;
    font-size: 14.5px;
    font-weight: 550;
    line-height: 1.2;
    color: #fff;
    background: var(--kgb-accent);
    border: 1px solid transparent;
    border-radius: 10px;
    cursor: pointer;
    transition: opacity .16s ease, transform .1s ease;
    -webkit-appearance: none;
}

.kgb-submit:hover,
.kgb-more:hover {
    opacity: .9;
}

.kgb-submit:active,
.kgb-more:active {
    transform: translateY(1px);
}

.kgb-submit[disabled],
.kgb-more[disabled] {
    opacity: .55;
    cursor: default;
    transform: none;
}

.kgb-hint {
    font-size: 12.5px;
    color: var(--kgb-muted);
}

/* ---------- 提示条 ---------- */

.kgb-notice {
    display: none;
    margin-top: 14px;
    padding: 10px 14px;
    font-size: 13.5px;
    border-radius: 10px;
    border: 1px solid transparent;
}

.kgb-notice.is-show {
    display: block;
    animation: kgb-fade .24s ease both;
}

.kgb-notice.is-ok {
    color: #1a7f48;
    background: #eaf7f0;
    border-color: #c9ead8;
}

.kgb-notice.is-err {
    color: #b42318;
    background: #fdecea;
    border-color: #f7d0cc;
}

body.dark-mode .kgb-notice.is-ok {
    color: #7ee2a8;
    background: rgba(30, 160, 90, .14);
    border-color: rgba(46, 190, 110, .3);
}

body.dark-mode .kgb-notice.is-err {
    color: #ff9b92;
    background: rgba(220, 60, 50, .14);
    border-color: rgba(230, 80, 70, .3);
}

/* ---------- 列表 ---------- */

.kgb-list {
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
}

.kgb-list > .kgb-item {
    display: flex;
    gap: 13px;
    padding: 16px 2px;
    margin: 0;
    border-bottom: 1px solid var(--kgb-line);
    list-style: none;
}

.kgb-list > .kgb-item:last-child {
    border-bottom: 0;
}

.kgb-item.is-new {
    animation: kgb-slide .34s ease both;
}

@keyframes kgb-fade {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes kgb-slide {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: none; }
}

.kgb-ava {
    flex: 0 0 38px;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 11px;
    background: var(--kgb-ava, #8b909a);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    user-select: none;
    overflow: hidden;
}

.kgb-body {
    flex: 1 1 auto;
    min-width: 0;
}

.kgb-meta {
    display: flex;
    align-items: baseline;
    gap: 9px;
    flex-wrap: wrap;
    margin-bottom: 3px;
}

.kgb-name {
    font-size: 14.5px;
    font-weight: 600;
}

.kgb-site {
    font-size: 12px;
    color: var(--kgb-muted);
    text-decoration: none;
    border-bottom: 1px dotted currentColor;
    padding-bottom: 1px;
}

.kgb-site:hover {
    color: var(--kgb-accent);
}

.kgb-time {
    margin-left: auto;
    font-size: 12px;
    color: var(--kgb-muted);
    white-space: nowrap;
}

.kgb-text {
    font-size: 14.5px;
    line-height: 1.75;
    word-wrap: break-word;
    overflow-wrap: anywhere;
}

.kgb-empty {
    padding: 34px 0;
    text-align: center;
    color: var(--kgb-muted);
    font-size: 14px;
    list-style: none;
}

/* ---------- 加载更多 ---------- */

.kgb-more-wrap {
    margin-top: 20px;
    text-align: center;
}

.kgb-more {
    color: var(--kgb-text);
    background: var(--kgb-bg);
    border-color: var(--kgb-line);
    padding: 9px 26px;
}

.kgb-more:hover {
    border-color: var(--kgb-accent);
    color: var(--kgb-accent);
    opacity: 1;
}

/* ---------- 响应式 ---------- */

@media (max-width: 600px) {
    .kgb {
        font-size: 14.5px;
    }

    .kgb-form {
        padding: 16px 14px 14px;
        border-radius: 14px;
    }

    .kgb-fields {
        grid-template-columns: 1fr;
    }

    .kgb-title {
        font-size: 19px;
    }

    .kgb-submit {
        width: 100%;
    }

    .kgb-actions {
        gap: 10px;
    }

    .kgb-hint {
        width: 100%;
        text-align: center;
    }

    .kgb-ava {
        flex-basis: 32px;
        width: 32px;
        height: 32px;
        font-size: 13px;
        border-radius: 9px;
    }

    .kgb-list > .kgb-item {
        gap: 10px;
        padding: 14px 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .kgb *,
    .kgb *::before,
    .kgb *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }
}