/* ===== 留言板通用 ===== */
.gb-form-card,
.gb-list-card,
.gb-w-list {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 16px;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.gb-form-card {
    padding: 20px;
    margin-bottom: 22px;
}

.gb-form-title {
    color: #fff;
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 14px;
}

.gb-form-row {
    margin-bottom: 12px;
}

.gb-label {
    display: block;
    margin-bottom: 6px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.75);
}

.gb-input,
.gb-textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.2);
    color: #fff;
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
}

.gb-input::placeholder,
.gb-textarea::placeholder {
    color: rgba(255, 255, 255, 0.42);
}

.gb-input:focus,
.gb-textarea:focus {
    border-color: #00d9ff;
    background: rgba(0, 0, 0, 0.3);
}

.gb-textarea {
    min-height: 100px;
    line-height: 1.6;
    resize: vertical;
}

.gb-form-foot {
    display: flex;
    align-items: center;
    gap: 10px;
}

.gb-tip,
.gb-form-tip {
    flex: 1;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.4;
}

.gb-tip.error,
.gb-form-tip.error {
    color: #ff8b8b;
}

.gb-submit {
    padding: 10px 24px;
    border: none;
    border-radius: 22px;
    background: linear-gradient(135deg, #00d9ff, #0099cc);
    color: #fff;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.gb-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 153, 204, 0.45);
}

.gb-submit:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.gb-small {
    padding: 8px 18px;
    font-size: 13px;
}

.gb-cancel {
    padding: 8px 16px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 20px;
    background: transparent;
    color: rgba(255, 255, 255, 0.85);
    font-family: inherit;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.gb-cancel:hover {
    background: rgba(255, 255, 255, 0.12);
}

/* ===== 留言列表 ===== */
.gb-list-card {
    overflow: hidden;
}

.gb-list-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
}

.gb-list-head h2 {
    font-size: 18px;
    letter-spacing: 1px;
}

.gb-list-head .gb-count {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.68);
}

.gb-msg {
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    color: #fff;
}

.gb-msg:last-child {
    border-bottom: none;
}

.gb-msg-head {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 6px;
}

.gb-name {
    font-size: 14px;
    font-weight: 600;
    color: #00e0ff;
    overflow-wrap: anywhere;
}

.gb-time {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.55);
    font-variant-numeric: tabular-nums;
}

.gb-body {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.92);
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.gb-msg > .gb-body {
    cursor: pointer;
    transition: color 0.2s ease;
}

.gb-msg > .gb-body:hover {
    color: #fff;
}

.gb-actions {
    margin-top: 6px;
}

.gb-reply-btn {
    padding: 0;
    border: none;
    background: transparent;
    color: #00d9ff;
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    opacity: 0.85;
}

.gb-reply-btn:hover {
    opacity: 1;
    text-decoration: underline;
}

.gb-replies {
    margin-top: 12px;
    padding-left: 14px;
    border-left: 2px solid rgba(255, 255, 255, 0.18);
}

.gb-reply {
    padding: 8px 0;
}

.gb-reply .gb-body {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.85);
}

.gb-reply-form {
    margin-top: 12px;
    padding: 14px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.22);
}

.gb-reply-form .gb-input {
    margin-bottom: 10px;
}

.gb-reply-textarea {
    min-height: 72px;
    margin-bottom: 10px;
}

/* ===== 页面底部挂件 ===== */
.gb-widget {
    max-width: 900px;
    margin: 0 auto 36px;
    padding: 0 20px;
}

.gb-w-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.gb-w-head h2 {
    color: #fff;
    font-size: 20px;
    letter-spacing: 1px;
}

.gb-w-head a {
    color: #00e0ff;
    font-size: 13px;
    text-decoration: none;
    white-space: nowrap;
}

.gb-w-head a:hover {
    text-decoration: underline;
}

.gb-w-list {
    max-height: 470px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}

.gb-w-list::-webkit-scrollbar {
    width: 8px;
}

.gb-w-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.gb-state {
    padding: 22px 18px;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.68);
}

.gb-state.error {
    color: #ff8b8b;
}

.gb-state a {
    color: #00e0ff;
    text-decoration: none;
}

.gb-state a:hover {
    text-decoration: underline;
}

@media (max-width: 640px) {
    .gb-widget {
        padding: 0 16px;
        margin-bottom: 28px;
    }

    .gb-msg {
        padding: 12px 14px;
    }

    .gb-form-card {
        padding: 16px;
    }

    .gb-form-foot {
        flex-wrap: wrap;
    }

    .gb-form-tip {
        flex: 1 0 100%;
        order: -1;
        margin-bottom: 8px;
    }
}